Your request for analysis of batctl has been completed successfully.
The results are available at https://u15810271.ct.sendgrid.net/ls/click?upn=HRESupC-2F2Czv4BOaCWWCy7my0P…
Build ID: 492878
Analysis Summary:
New defects found: 0
Defects eliminated: 0
1
0
Your request for analysis of alfred has been completed successfully.
The results are available at https://u15810271.ct.sendgrid.net/ls/click?upn=HRESupC-2F2Czv4BOaCWWCy7my0P…
Build ID: 492877
Analysis Summary:
New defects found: 0
Defects eliminated: 0
1
0
Name of failed tests
====================
master
------
* difference between net-next and batadv master
* headers
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=n TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=n TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=y MCAST=n BATMAN_V=y
maint
-----
* difference between net and batadv maint
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
Output of different failed tests
================================
maint: difference between net and batadv maint
----------------------------------------------
net/net/batman-adv/bat_v_elp.c | 1
net/net/batman-adv/main.h | 2 -
net/net/batman-adv/netlink.c | 1
net/net/batman-adv/trace.h | 2 -
net/net/batman-adv/types.h | 39 --------------------------------
5 files changed, 2 insertions(+), 43 deletions(-)
master: difference between net-next and batadv master
-----------------------------------------------------
netnext/net/batman-adv/netlink.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
master: headers
---------------
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 636952ff..b97f7dda 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -8,6 +8,7 @@
#include "main.h" // IWYU pragma: keep
#include <linux/atomic.h>
+#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/container_of.h>
#include <linux/errno.h>
maint: sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
---------------------------------------------------------------------------
/home/build_test/build_env/tmp.WQJ3M3Vxb0/net/batman-adv/bat_v_elp.c: note: in included file:
./include/linux/ethtool.h:148:38: warning: nested flexible array
/home/build_test/build_env/tmp.WQJ3M3Vxb0/net/batman-adv/bat_v_elp.c:128:35: warning: using sizeof on a flexible structure
master: sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=y MCAST=y BATMAN_V=y
---------------------------------------------------------------------------
/home/build_test/build_env/tmp.WQJ3M3Vxb0/net/batman-adv/bat_v_elp.c: note: in included file:
./include/linux/ethtool.h:148:38: warning: nested flexible array
Statistics
==========
master
------
Failed tests: 19
Started build tests: 199
Tested Linux versions: 9
Tested configs: 96
maint
-----
Failed tests: 13
Started build tests: 192
Tested Linux versions: 9
Tested configs: 101
1
0
[linux-next] LinuxNextTracking branch, master, updated. next-20221109
by batmanï¼ open-mesh.org 09 Nov '22
by batmanï¼ open-mesh.org 09 Nov '22
09 Nov '22
The following commit has been merged in the master branch:
commit b18b8c9b595f31d37b3fc857e3004761a71cfbf1
Author: Jason A. Donenfeld <Jason(a)zx2c4.com>
Date: Sun Oct 9 20:44:02 2022 -0600
treewide: use get_random_u32_below() instead of deprecated function
This is a simple mechanical transformation done by:
@@
expression E;
@@
- prandom_u32_max
+ get_random_u32_below
(E)
Reviewed-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Acked-by: Darrick J. Wong <djwong(a)kernel.org> # for xfs
Reviewed-by: SeongJae Park <sj(a)kernel.org> # for damon
Reviewed-by: Jason Gunthorpe <jgg(a)nvidia.com> # for infiniband
Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com>
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index a2b31d91a1b6..f811733a8fc5 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -371,7 +371,7 @@ static unsigned long sigpage_addr(const struct mm_struct *mm,
slots = ((last - first) >> PAGE_SHIFT) + 1;
- offset = prandom_u32_max(slots);
+ offset = get_random_u32_below(slots);
addr = first + (offset << PAGE_SHIFT);
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 044a7d7f1f6a..1395a1638427 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -591,7 +591,7 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index 2526b68f1c0f..77952d814bad 100644
--- a/arch/loongarch/kernel/process.c
+++ b/arch/loongarch/kernel/process.c
@@ -293,7 +293,7 @@ unsigned long stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & STACK_ALIGN;
}
diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c
index 8c9826062652..eaebd2e0f725 100644
--- a/arch/loongarch/kernel/vdso.c
+++ b/arch/loongarch/kernel/vdso.c
@@ -78,7 +78,7 @@ static unsigned long vdso_base(void)
unsigned long base = STACK_TOP;
if (current->flags & PF_RANDOMIZE) {
- base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
+ base += get_random_u32_below(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index bbe9ce471791..093dbbd6b843 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -711,7 +711,7 @@ unsigned long mips_stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ALMASK;
}
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index 5fd9bf1d596c..f6d40e43f108 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -79,7 +79,7 @@ static unsigned long vdso_base(void)
}
if (current->flags & PF_RANDOMIZE) {
- base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
+ base += get_random_u32_below(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
diff --git a/arch/parisc/kernel/vdso.c b/arch/parisc/kernel/vdso.c
index 47e5960a2f96..c5cbfce7a84c 100644
--- a/arch/parisc/kernel/vdso.c
+++ b/arch/parisc/kernel/vdso.c
@@ -75,7 +75,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
map_base = mm->mmap_base;
if (current->flags & PF_RANDOMIZE)
- map_base -= prandom_u32_max(0x20) * PAGE_SIZE;
+ map_base -= get_random_u32_below(0x20) * PAGE_SIZE;
vdso_text_start = get_unmapped_area(NULL, map_base, vdso_text_len, 0, 0);
diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c
index 273c527868db..c61a874a3a5c 100644
--- a/arch/powerpc/crypto/crc-vpmsum_test.c
+++ b/arch/powerpc/crypto/crc-vpmsum_test.c
@@ -77,8 +77,8 @@ static int __init crc_test_init(void)
pr_info("crc-vpmsum_test begins, %lu iterations\n", iterations);
for (i=0; i<iterations; i++) {
- size_t offset = prandom_u32_max(16);
- size_t len = prandom_u32_max(MAX_CRC_LENGTH);
+ size_t offset = get_random_u32_below(16);
+ size_t len = get_random_u32_below(MAX_CRC_LENGTH);
if (len <= offset)
continue;
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 67da147fe34d..fcf604370c66 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -2303,6 +2303,6 @@ void notrace __ppc64_runlatch_off(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 42af4b3aa02b..3f5d2db0b854 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -224,7 +224,7 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 3105ca5bd470..119328e1e2b3 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -227,7 +227,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned long len)
end -= len;
if (end > start) {
- offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
+ offset = get_random_u32_below(((end - start) >> PAGE_SHIFT) + 1);
addr = start + (offset << PAGE_SHIFT);
} else {
addr = start;
diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c
index ae9a86cb6f3d..136c78f28f8b 100644
--- a/arch/sparc/vdso/vma.c
+++ b/arch/sparc/vdso/vma.c
@@ -354,7 +354,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned int len)
unsigned int offset;
/* This loses some more bits than a modulo, but is cheaper */
- offset = prandom_u32_max(PTRS_PER_PTE);
+ offset = get_random_u32_below(PTRS_PER_PTE);
return start + (offset << PAGE_SHIFT);
}
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 010bc422a09d..e38f41444721 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -356,7 +356,7 @@ int singlestepping(void * t)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(8192);
+ sp -= get_random_u32_below(8192);
return sp & ~0xf;
}
#endif
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
index 311eae30e089..d45c5fcfeac2 100644
--- a/arch/x86/entry/vdso/vma.c
+++ b/arch/x86/entry/vdso/vma.c
@@ -327,7 +327,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned len)
end -= len;
if (end > start) {
- offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
+ offset = get_random_u32_below(((end - start) >> PAGE_SHIFT) + 1);
addr = start + (offset << PAGE_SHIFT);
} else {
addr = start;
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index c032edcd3d95..c09ae279ef32 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -53,7 +53,7 @@ static unsigned long int get_module_load_offset(void)
*/
if (module_load_offset == 0)
module_load_offset =
- (prandom_u32_max(1024) + 1) * PAGE_SIZE;
+ (get_random_u32_below(1024) + 1) * PAGE_SIZE;
mutex_unlock(&module_kaslr_mutex);
}
return module_load_offset;
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index c21b7347a26d..62671ccf0404 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -965,7 +965,7 @@ early_param("idle", idle_setup);
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(8192);
+ sp -= get_random_u32_below(8192);
return sp & ~0xf;
}
diff --git a/arch/x86/mm/pat/cpa-test.c b/arch/x86/mm/pat/cpa-test.c
index 423b21e80929..3d2f7f0a6ed1 100644
--- a/arch/x86/mm/pat/cpa-test.c
+++ b/arch/x86/mm/pat/cpa-test.c
@@ -136,10 +136,10 @@ static int pageattr_test(void)
failed += print_split(&sa);
for (i = 0; i < NTEST; i++) {
- unsigned long pfn = prandom_u32_max(max_pfn_mapped);
+ unsigned long pfn = get_random_u32_below(max_pfn_mapped);
addr[i] = (unsigned long)__va(pfn << PAGE_SHIFT);
- len[i] = prandom_u32_max(NPAGES);
+ len[i] = get_random_u32_below(NPAGES);
len[i] = min_t(unsigned long, len[i], max_pfn_mapped - pfn - 1);
if (len[i] == 0)
diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c
index 3285e3af43e1..0f722f8f779b 100644
--- a/crypto/rsa-pkcs1pad.c
+++ b/crypto/rsa-pkcs1pad.c
@@ -253,7 +253,7 @@ static int pkcs1pad_encrypt(struct akcipher_request *req)
ps_end = ctx->key_size - req->src_len - 2;
req_ctx->in_buf[0] = 0x02;
for (i = 1; i < ps_end; i++)
- req_ctx->in_buf[i] = 1 + prandom_u32_max(255);
+ req_ctx->in_buf[i] = 1 + get_random_u32_below(255);
req_ctx->in_buf[ps_end] = 0x00;
pkcs1pad_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf,
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index bcd059caa1c8..079923d43ce2 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -855,9 +855,9 @@ static int prepare_keybuf(const u8 *key, unsigned int ksize,
/* Generate a random length in range [0, max_len], but prefer smaller values */
static unsigned int generate_random_length(unsigned int max_len)
{
- unsigned int len = prandom_u32_max(max_len + 1);
+ unsigned int len = get_random_u32_below(max_len + 1);
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
return len % 64;
case 1:
@@ -874,14 +874,14 @@ static void flip_random_bit(u8 *buf, size_t size)
{
size_t bitpos;
- bitpos = prandom_u32_max(size * 8);
+ bitpos = get_random_u32_below(size * 8);
buf[bitpos / 8] ^= 1 << (bitpos % 8);
}
/* Flip a random byte in the given nonempty data buffer */
static void flip_random_byte(u8 *buf, size_t size)
{
- buf[prandom_u32_max(size)] ^= 0xff;
+ buf[get_random_u32_below(size)] ^= 0xff;
}
/* Sometimes make some random changes to the given nonempty data buffer */
@@ -891,15 +891,15 @@ static void mutate_buffer(u8 *buf, size_t size)
size_t i;
/* Sometimes flip some bits */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size * 8);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size * 8);
for (i = 0; i < num_flips; i++)
flip_random_bit(buf, size);
}
/* Sometimes flip some bytes */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size);
for (i = 0; i < num_flips; i++)
flip_random_byte(buf, size);
}
@@ -915,11 +915,11 @@ static void generate_random_bytes(u8 *buf, size_t count)
if (count == 0)
return;
- switch (prandom_u32_max(8)) { /* Choose a generation strategy */
+ switch (get_random_u32_below(8)) { /* Choose a generation strategy */
case 0:
case 1:
/* All the same byte, plus optional mutations */
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
b = 0x00;
break;
@@ -959,24 +959,24 @@ static char *generate_random_sgl_divisions(struct test_sg_division *divs,
unsigned int this_len;
const char *flushtype_str;
- if (div == &divs[max_divs - 1] || prandom_u32_max(2) == 0)
+ if (div == &divs[max_divs - 1] || get_random_u32_below(2) == 0)
this_len = remaining;
else
- this_len = 1 + prandom_u32_max(remaining);
+ this_len = 1 + get_random_u32_below(remaining);
div->proportion_of_total = this_len;
- if (prandom_u32_max(4) == 0)
- div->offset = (PAGE_SIZE - 128) + prandom_u32_max(128);
- else if (prandom_u32_max(2) == 0)
- div->offset = prandom_u32_max(32);
+ if (get_random_u32_below(4) == 0)
+ div->offset = (PAGE_SIZE - 128) + get_random_u32_below(128);
+ else if (get_random_u32_below(2) == 0)
+ div->offset = get_random_u32_below(32);
else
- div->offset = prandom_u32_max(PAGE_SIZE);
- if (prandom_u32_max(8) == 0)
+ div->offset = get_random_u32_below(PAGE_SIZE);
+ if (get_random_u32_below(8) == 0)
div->offset_relative_to_alignmask = true;
div->flush_type = FLUSH_TYPE_NONE;
if (gen_flushes) {
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
div->flush_type = FLUSH_TYPE_REIMPORT;
break;
@@ -988,7 +988,7 @@ static char *generate_random_sgl_divisions(struct test_sg_division *divs,
if (div->flush_type != FLUSH_TYPE_NONE &&
!(req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0)
+ get_random_u32_below(2) == 0)
div->nosimd = true;
switch (div->flush_type) {
@@ -1035,7 +1035,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
p += scnprintf(p, end - p, "random:");
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
case 1:
cfg->inplace_mode = OUT_OF_PLACE;
@@ -1050,12 +1050,12 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
break;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
cfg->req_flags |= CRYPTO_TFM_REQ_MAY_SLEEP;
p += scnprintf(p, end - p, " may_sleep");
}
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
cfg->finalization_type = FINALIZATION_TYPE_FINAL;
p += scnprintf(p, end - p, " use_final");
@@ -1071,7 +1071,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
}
if (!(cfg->req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0) {
+ get_random_u32_below(2) == 0) {
cfg->nosimd = true;
p += scnprintf(p, end - p, " nosimd");
}
@@ -1084,7 +1084,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
cfg->req_flags);
p += scnprintf(p, end - p, "]");
- if (cfg->inplace_mode == OUT_OF_PLACE && prandom_u32_max(2) == 0) {
+ if (cfg->inplace_mode == OUT_OF_PLACE && get_random_u32_below(2) == 0) {
p += scnprintf(p, end - p, " dst_divs=[");
p = generate_random_sgl_divisions(cfg->dst_divs,
ARRAY_SIZE(cfg->dst_divs),
@@ -1093,13 +1093,13 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
p += scnprintf(p, end - p, "]");
}
- if (prandom_u32_max(2) == 0) {
- cfg->iv_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->iv_offset = 1 + get_random_u32_below(MAX_ALGAPI_ALIGNMASK);
p += scnprintf(p, end - p, " iv_offset=%u", cfg->iv_offset);
}
- if (prandom_u32_max(2) == 0) {
- cfg->key_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->key_offset = 1 + get_random_u32_below(MAX_ALGAPI_ALIGNMASK);
p += scnprintf(p, end - p, " key_offset=%u", cfg->key_offset);
}
@@ -1652,8 +1652,8 @@ static void generate_random_hash_testvec(struct shash_desc *desc,
vec->ksize = 0;
if (maxkeysize) {
vec->ksize = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->ksize = 1 + prandom_u32_max(maxkeysize);
+ if (get_random_u32_below(4) == 0)
+ vec->ksize = 1 + get_random_u32_below(maxkeysize);
generate_random_bytes((u8 *)vec->key, vec->ksize);
vec->setkey_error = crypto_shash_setkey(desc->tfm, vec->key,
@@ -2218,13 +2218,13 @@ static void mutate_aead_message(struct aead_testvec *vec, bool aad_iv,
const unsigned int aad_tail_size = aad_iv ? ivsize : 0;
const unsigned int authsize = vec->clen - vec->plen;
- if (prandom_u32_max(2) == 0 && vec->alen > aad_tail_size) {
+ if (get_random_u32_below(2) == 0 && vec->alen > aad_tail_size) {
/* Mutate the AAD */
flip_random_bit((u8 *)vec->assoc, vec->alen - aad_tail_size);
- if (prandom_u32_max(2) == 0)
+ if (get_random_u32_below(2) == 0)
return;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
/* Mutate auth tag (assuming it's at the end of ciphertext) */
flip_random_bit((u8 *)vec->ctext + vec->plen, authsize);
} else {
@@ -2249,7 +2249,7 @@ static void generate_aead_message(struct aead_request *req,
const unsigned int ivsize = crypto_aead_ivsize(tfm);
const unsigned int authsize = vec->clen - vec->plen;
const bool inauthentic = (authsize >= MIN_COLLISION_FREE_AUTHSIZE) &&
- (prefer_inauthentic || prandom_u32_max(4) == 0);
+ (prefer_inauthentic || get_random_u32_below(4) == 0);
/* Generate the AAD. */
generate_random_bytes((u8 *)vec->assoc, vec->alen);
@@ -2257,7 +2257,7 @@ static void generate_aead_message(struct aead_request *req,
/* Avoid implementation-defined behavior. */
memcpy((u8 *)vec->assoc + vec->alen - ivsize, vec->iv, ivsize);
- if (inauthentic && prandom_u32_max(2) == 0) {
+ if (inauthentic && get_random_u32_below(2) == 0) {
/* Generate a random ciphertext. */
generate_random_bytes((u8 *)vec->ctext, vec->clen);
} else {
@@ -2321,8 +2321,8 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_aead_setkey(tfm, vec->key, vec->klen);
@@ -2331,8 +2331,8 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* Tag length: in [0, maxauthsize], but usually choose maxauthsize */
authsize = maxauthsize;
- if (prandom_u32_max(4) == 0)
- authsize = prandom_u32_max(maxauthsize + 1);
+ if (get_random_u32_below(4) == 0)
+ authsize = get_random_u32_below(maxauthsize + 1);
if (prefer_inauthentic && authsize < MIN_COLLISION_FREE_AUTHSIZE)
authsize = MIN_COLLISION_FREE_AUTHSIZE;
if (WARN_ON(authsize > maxdatasize))
@@ -2342,7 +2342,7 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* AAD, plaintext, and ciphertext lengths */
total_len = generate_random_length(maxdatasize);
- if (prandom_u32_max(4) == 0)
+ if (get_random_u32_below(4) == 0)
vec->alen = 0;
else
vec->alen = generate_random_length(total_len);
@@ -2958,8 +2958,8 @@ static void generate_random_cipher_testvec(struct skcipher_request *req,
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_skcipher_setkey(tfm, vec->key, vec->klen);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index ee69d50ba4fd..3eccc6cd5004 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -781,7 +781,7 @@ static struct socket *drbd_wait_for_connect(struct drbd_connection *connection,
timeo = connect_int * HZ;
/* 28.5% random jitter */
- timeo += prandom_u32_max(2) ? timeo / 7 : -timeo / 7;
+ timeo += get_random_u32_below(2) ? timeo / 7 : -timeo / 7;
err = wait_for_completion_interruptible_timeout(&ad->door_bell, timeo);
if (err <= 0)
@@ -1004,7 +1004,7 @@ retry:
drbd_warn(connection, "Error receiving initial packet\n");
sock_release(s);
randomize:
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
goto retry;
}
}
diff --git a/drivers/bus/mhi/host/internal.h b/drivers/bus/mhi/host/internal.h
index 01fd10a399b6..c73621aabbd1 100644
--- a/drivers/bus/mhi/host/internal.h
+++ b/drivers/bus/mhi/host/internal.h
@@ -129,7 +129,7 @@ enum mhi_pm_state {
#define PRIMARY_CMD_RING 0
#define MHI_DEV_WAKE_DB 127
#define MHI_MAX_MTU 0xffff
-#define MHI_RANDOM_U32_NONZERO(bmsk) (prandom_u32_max(bmsk) + 1)
+#define MHI_RANDOM_U32_NONZERO(bmsk) (get_random_u32_below(bmsk) + 1)
enum mhi_er_type {
MHI_ER_TYPE_INVALID = 0x0,
diff --git a/drivers/dma-buf/st-dma-fence-chain.c b/drivers/dma-buf/st-dma-fence-chain.c
index 0a9b099d0518..9fbad7317d9b 100644
--- a/drivers/dma-buf/st-dma-fence-chain.c
+++ b/drivers/dma-buf/st-dma-fence-chain.c
@@ -400,7 +400,7 @@ static int __find_race(void *arg)
struct dma_fence *fence = dma_fence_get(data->fc.tail);
int seqno;
- seqno = prandom_u32_max(data->fc.chain_length) + 1;
+ seqno = get_random_u32_below(data->fc.chain_length) + 1;
err = dma_fence_chain_find_seqno(&fence, seqno);
if (err) {
@@ -429,7 +429,7 @@ static int __find_race(void *arg)
dma_fence_put(fence);
signal:
- seqno = prandom_u32_max(data->fc.chain_length - 1);
+ seqno = get_random_u32_below(data->fc.chain_length - 1);
dma_fence_signal(data->fc.fences[seqno]);
cond_resched();
}
@@ -637,7 +637,7 @@ static void randomise_fences(struct fence_chains *fc)
while (--count) {
unsigned int swp;
- swp = prandom_u32_max(count + 1);
+ swp = get_random_u32_below(count + 1);
if (swp == count)
continue;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 845023c14eb3..29d2459bcc90 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -2424,7 +2424,7 @@ gen8_dispatch_bsd_engine(struct drm_i915_private *dev_priv,
/* Check whether the file_priv has already selected one ring. */
if ((int)file_priv->bsd_engine < 0)
file_priv->bsd_engine =
- prandom_u32_max(num_vcs_engines(dev_priv));
+ get_random_u32_below(num_vcs_engines(dev_priv));
return file_priv->bsd_engine;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index c718e6dc40b5..45b605e32c87 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -3689,7 +3689,7 @@ static void virtual_engine_initial_hint(struct virtual_engine *ve)
* NB This does not force us to execute on this engine, it will just
* typically be the first we inspect for submission.
*/
- swp = prandom_u32_max(ve->num_siblings);
+ swp = get_random_u32_below(ve->num_siblings);
if (swp)
swap(ve->siblings[swp], ve->siblings[0]);
}
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index 9a4a7fb55582..b9a164efd6ae 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -38,7 +38,7 @@ static int __iopagetest(struct intel_memory_region *mem,
u8 value, resource_size_t offset,
const void *caller)
{
- int byte = prandom_u32_max(pagesize);
+ int byte = get_random_u32_below(pagesize);
u8 result[3];
memset_io(va, value, pagesize); /* or GPF! */
@@ -92,7 +92,7 @@ static int iopagetest(struct intel_memory_region *mem,
static resource_size_t random_page(resource_size_t last)
{
/* Limited to low 44b (16TiB), but should suffice for a spot check */
- return prandom_u32_max(last >> PAGE_SHIFT) << PAGE_SHIFT;
+ return get_random_u32_below(last >> PAGE_SHIFT) << PAGE_SHIFT;
}
static int iomemtest(struct intel_memory_region *mem,
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 26d1772179b8..dd1c703b10df 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3807,7 +3807,7 @@ static int cma_alloc_any_port(enum rdma_ucm_port_space ps,
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32_max(remaining) + low;
+ rover = get_random_u32_below(remaining) + low;
retry:
if (last_used_port != rover) {
struct rdma_bind_list *bind_list;
diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c
index 280d61466855..e2188b335e76 100644
--- a/drivers/infiniband/hw/cxgb4/id_table.c
+++ b/drivers/infiniband/hw/cxgb4/id_table.c
@@ -54,7 +54,7 @@ u32 c4iw_id_alloc(struct c4iw_id_table *alloc)
if (obj < alloc->max) {
if (alloc->flags & C4IW_ID_TABLE_F_RANDOM)
- alloc->last += prandom_u32_max(RANDOM_SKIP);
+ alloc->last += get_random_u32_below(RANDOM_SKIP);
else
alloc->last = obj + 1;
if (alloc->last >= alloc->max)
@@ -85,7 +85,7 @@ int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
alloc->start = start;
alloc->flags = flags;
if (flags & C4IW_ID_TABLE_F_RANDOM)
- alloc->last = prandom_u32_max(RANDOM_SKIP);
+ alloc->last = get_random_u32_below(RANDOM_SKIP);
else
alloc->last = 0;
alloc->max = num;
diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c
index 480c062dd04f..b37d2a81584d 100644
--- a/drivers/infiniband/hw/hns/hns_roce_ah.c
+++ b/drivers/infiniband/hw/hns/hns_roce_ah.c
@@ -41,8 +41,8 @@ static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
u16 sport;
if (!fl)
- sport = prandom_u32_max(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
- IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
+ sport = get_random_u32_below(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX +
+ 1 - IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
IB_ROCE_UDP_ENCAP_VALID_PORT_MIN;
else
sport = rdma_flow_label_to_udp_sport(fl);
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 8546b8816524..ab75b690ad08 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1517,7 +1517,7 @@ static void rtrs_clt_err_recovery_work(struct work_struct *work)
rtrs_clt_stop_and_destroy_conns(clt_path);
queue_delayed_work(rtrs_wq, &clt_path->reconnect_dwork,
msecs_to_jiffies(delay_ms +
- prandom_u32_max(RTRS_RECONNECT_SEED)));
+ get_random_u32_below(RTRS_RECONNECT_SEED)));
}
static struct rtrs_clt_path *alloc_path(struct rtrs_clt_sess *clt,
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 3427555b0cca..32e21ba64357 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -401,7 +401,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
}
if (bypass_torture_test(dc)) {
- if (prandom_u32_max(4) == 3)
+ if (get_random_u32_below(4) == 3)
goto skip;
else
goto rescale;
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
index 303d02b1d71c..a366566f22c3 100644
--- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
+++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
@@ -872,7 +872,7 @@ static void precalculate_color(struct tpg_data *tpg, int k)
} else if (tpg->pattern == TPG_PAT_NOISE) {
r = g = b = get_random_u8();
} else if (k == TPG_COLOR_RANDOM) {
- r = g = b = tpg->qual_offset + prandom_u32_max(196);
+ r = g = b = tpg->qual_offset + get_random_u32_below(196);
} else if (k >= TPG_COLOR_RAMP) {
r = g = b = k - TPG_COLOR_RAMP;
}
@@ -2286,7 +2286,7 @@ static void tpg_fill_params_extras(const struct tpg_data *tpg,
params->wss_width = tpg->crop.width;
params->wss_width = tpg_hscale_div(tpg, p, params->wss_width);
params->wss_random_offset =
- params->twopixsize * prandom_u32_max(tpg->src_width / 2);
+ params->twopixsize * get_random_u32_below(tpg->src_width / 2);
if (tpg->crop.left < tpg->border.left) {
left_pillar_width = tpg->border.left - tpg->crop.left;
@@ -2495,9 +2495,9 @@ static void tpg_fill_plane_pattern(const struct tpg_data *tpg,
linestart_newer = tpg->black_line[p];
} else if (tpg->pattern == TPG_PAT_NOISE || tpg->qual == TPG_QUAL_NOISE) {
linestart_older = tpg->random_line[p] +
- twopixsize * prandom_u32_max(tpg->src_width / 2);
+ twopixsize * get_random_u32_below(tpg->src_width / 2);
linestart_newer = tpg->random_line[p] +
- twopixsize * prandom_u32_max(tpg->src_width / 2);
+ twopixsize * get_random_u32_below(tpg->src_width / 2);
} else {
unsigned frame_line_old =
(frame_line + mv_vert_old) % tpg->src_height;
diff --git a/drivers/media/test-drivers/vidtv/vidtv_demod.c b/drivers/media/test-drivers/vidtv/vidtv_demod.c
index e7959ab1add8..d60c6d16beea 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_demod.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_demod.c
@@ -188,11 +188,11 @@ static void vidtv_demod_update_stats(struct dvb_frontend *fe)
* Also, usually, signal strength is a negative number in dBm.
*/
c->strength.stat[0].svalue = state->tuner_cnr;
- c->strength.stat[0].svalue -= prandom_u32_max(state->tuner_cnr / 50);
+ c->strength.stat[0].svalue -= get_random_u32_below(state->tuner_cnr / 50);
c->strength.stat[0].svalue -= 68000; /* Adjust to a better range */
c->cnr.stat[0].svalue = state->tuner_cnr;
- c->cnr.stat[0].svalue -= prandom_u32_max(state->tuner_cnr / 50);
+ c->cnr.stat[0].svalue -= get_random_u32_below(state->tuner_cnr / 50);
}
static int vidtv_demod_read_status(struct dvb_frontend *fe,
@@ -213,11 +213,11 @@ static int vidtv_demod_read_status(struct dvb_frontend *fe,
if (snr < cnr2qual->cnr_ok) {
/* eventually lose the TS lock */
- if (prandom_u32_max(100) < config->drop_tslock_prob_on_low_snr)
+ if (get_random_u32_below(100) < config->drop_tslock_prob_on_low_snr)
state->status = 0;
} else {
/* recover if the signal improves */
- if (prandom_u32_max(100) <
+ if (get_random_u32_below(100) <
config->recover_tslock_prob_on_good_snr)
state->status = FE_HAS_SIGNAL |
FE_HAS_CARRIER |
diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-cap.c b/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
index 690daada7db4..ee65d20314d3 100644
--- a/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
@@ -693,7 +693,7 @@ static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev,
/* Drop a certain percentage of buffers. */
if (dev->perc_dropped_buffers &&
- prandom_u32_max(100) < dev->perc_dropped_buffers)
+ get_random_u32_below(100) < dev->perc_dropped_buffers)
goto update_mv;
spin_lock(&dev->slock);
diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-out.c b/drivers/media/test-drivers/vivid/vivid-kthread-out.c
index 0833e021bb11..fac6208b51da 100644
--- a/drivers/media/test-drivers/vivid/vivid-kthread-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-out.c
@@ -51,7 +51,7 @@ static void vivid_thread_vid_out_tick(struct vivid_dev *dev)
/* Drop a certain percentage of buffers. */
if (dev->perc_dropped_buffers &&
- prandom_u32_max(100) < dev->perc_dropped_buffers)
+ get_random_u32_below(100) < dev->perc_dropped_buffers)
return;
spin_lock(&dev->slock);
diff --git a/drivers/media/test-drivers/vivid/vivid-radio-rx.c b/drivers/media/test-drivers/vivid/vivid-radio-rx.c
index 8bd09589fb15..79c1723bd84c 100644
--- a/drivers/media/test-drivers/vivid/vivid-radio-rx.c
+++ b/drivers/media/test-drivers/vivid/vivid-radio-rx.c
@@ -94,8 +94,8 @@ retry:
if (data_blk == 0 && dev->radio_rds_loop)
vivid_radio_rds_init(dev);
- if (perc && prandom_u32_max(100) < perc) {
- switch (prandom_u32_max(4)) {
+ if (perc && get_random_u32_below(100) < perc) {
+ switch (get_random_u32_below(4)) {
case 0:
rds.block |= V4L2_RDS_BLOCK_CORRECTED;
break;
diff --git a/drivers/media/test-drivers/vivid/vivid-sdr-cap.c b/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
index 0ae5628b86c9..a81f26b76988 100644
--- a/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
@@ -90,7 +90,7 @@ static void vivid_thread_sdr_cap_tick(struct vivid_dev *dev)
/* Drop a certain percentage of buffers. */
if (dev->perc_dropped_buffers &&
- prandom_u32_max(100) < dev->perc_dropped_buffers)
+ get_random_u32_below(100) < dev->perc_dropped_buffers)
return;
spin_lock(&dev->slock);
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index 6cc32eb54f9d..c7f6e23df51e 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -221,7 +221,7 @@ static void vivid_fill_buff_noise(__s16 *tch_buf, int size)
static inline int get_random_pressure(void)
{
- return prandom_u32_max(VIVID_PRESSURE_LIMIT);
+ return get_random_u32_below(VIVID_PRESSURE_LIMIT);
}
static void vivid_tch_buf_set(struct v4l2_pix_format *f,
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 95fa8fb1d45f..a1efda85c6f2 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -97,8 +97,8 @@ static void mmc_should_fail_request(struct mmc_host *host,
!should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
return;
- data->error = data_errors[prandom_u32_max(ARRAY_SIZE(data_errors))];
- data->bytes_xfered = prandom_u32_max(data->bytes_xfered >> 9) << 9;
+ data->error = data_errors[get_random_u32_below(ARRAY_SIZE(data_errors))];
+ data->bytes_xfered = get_random_u32_below(data->bytes_xfered >> 9) << 9;
}
#else /* CONFIG_FAIL_MMC_REQUEST */
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index c78bbc22e0d1..6ef410053037 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1858,7 +1858,7 @@ static void dw_mci_start_fault_timer(struct dw_mci *host)
* Try to inject the error at random points during the data transfer.
*/
hrtimer_start(&host->fault_timer,
- ms_to_ktime(prandom_u32_max(25)),
+ ms_to_ktime(get_random_u32_below(25)),
HRTIMER_MODE_REL);
}
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index 672719023241..274a31b93100 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -1405,9 +1405,9 @@ static void ns_do_bit_flips(struct nandsim *ns, int num)
if (bitflips && get_random_u16() < (1 << 6)) {
int flips = 1;
if (bitflips > 1)
- flips = prandom_u32_max(bitflips) + 1;
+ flips = get_random_u32_below(bitflips) + 1;
while (flips--) {
- int pos = prandom_u32_max(num * 8);
+ int pos = get_random_u32_below(num * 8);
ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
NS_WARN("read_page: flipping bit %d in page %d "
"reading from %d ecc: corrected=%u failed=%u\n",
diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
index 440988562cfd..824cc1c03b6a 100644
--- a/drivers/mtd/tests/mtd_nandecctest.c
+++ b/drivers/mtd/tests/mtd_nandecctest.c
@@ -47,7 +47,7 @@ struct nand_ecc_test {
static void single_bit_error_data(void *error_data, void *correct_data,
size_t size)
{
- unsigned int offset = prandom_u32_max(size * BITS_PER_BYTE);
+ unsigned int offset = get_random_u32_below(size * BITS_PER_BYTE);
memcpy(error_data, correct_data, size);
__change_bit_le(offset, error_data);
@@ -58,9 +58,9 @@ static void double_bit_error_data(void *error_data, void *correct_data,
{
unsigned int offset[2];
- offset[0] = prandom_u32_max(size * BITS_PER_BYTE);
+ offset[0] = get_random_u32_below(size * BITS_PER_BYTE);
do {
- offset[1] = prandom_u32_max(size * BITS_PER_BYTE);
+ offset[1] = get_random_u32_below(size * BITS_PER_BYTE);
} while (offset[0] == offset[1]);
memcpy(error_data, correct_data, size);
@@ -71,7 +71,7 @@ static void double_bit_error_data(void *error_data, void *correct_data,
static unsigned int random_ecc_bit(size_t size)
{
- unsigned int offset = prandom_u32_max(3 * BITS_PER_BYTE);
+ unsigned int offset = get_random_u32_below(3 * BITS_PER_BYTE);
if (size == 256) {
/*
@@ -79,7 +79,7 @@ static unsigned int random_ecc_bit(size_t size)
* and 17th bit) in ECC code for 256 byte data block
*/
while (offset == 16 || offset == 17)
- offset = prandom_u32_max(3 * BITS_PER_BYTE);
+ offset = get_random_u32_below(3 * BITS_PER_BYTE);
}
return offset;
diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c
index 75b6ddc5dc4d..8062098930d6 100644
--- a/drivers/mtd/tests/stresstest.c
+++ b/drivers/mtd/tests/stresstest.c
@@ -46,7 +46,7 @@ static int rand_eb(void)
again:
/* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
- eb = prandom_u32_max(ebcnt - 1);
+ eb = get_random_u32_below(ebcnt - 1);
if (bbt[eb])
goto again;
return eb;
@@ -54,12 +54,12 @@ again:
static int rand_offs(void)
{
- return prandom_u32_max(bufsize);
+ return get_random_u32_below(bufsize);
}
static int rand_len(int offs)
{
- return prandom_u32_max(bufsize - offs);
+ return get_random_u32_below(bufsize - offs);
}
static int do_read(void)
@@ -118,7 +118,7 @@ static int do_write(void)
static int do_operation(void)
{
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
return do_read();
else
return do_write();
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index 908d0e088557..fcca6942dbdd 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -590,7 +590,7 @@ int ubi_dbg_power_cut(struct ubi_device *ubi, int caller)
if (ubi->dbg.power_cut_max > ubi->dbg.power_cut_min) {
range = ubi->dbg.power_cut_max - ubi->dbg.power_cut_min;
- ubi->dbg.power_cut_counter += prandom_u32_max(range);
+ ubi->dbg.power_cut_counter += get_random_u32_below(range);
}
return 0;
}
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index dc8d8f83657a..23676f32b681 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -73,7 +73,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_bitflips)
- return !prandom_u32_max(200);
+ return !get_random_u32_below(200);
return 0;
}
@@ -87,7 +87,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !prandom_u32_max(500);
+ return !get_random_u32_below(500);
return 0;
}
@@ -101,7 +101,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !prandom_u32_max(400);
+ return !get_random_u32_below(400);
return 0;
}
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index 2198e35d9e18..74bc053a2078 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -4105,7 +4105,7 @@ static int cnic_cm_alloc_mem(struct cnic_dev *dev)
for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
atomic_set(&cp->csk_tbl[i].ref_count, 0);
- port_id = prandom_u32_max(CNIC_LOCAL_PORT_RANGE);
+ port_id = get_random_u32_below(CNIC_LOCAL_PORT_RANGE);
if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
CNIC_LOCAL_PORT_MIN, port_id)) {
cnic_cm_free_mem(dev);
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
index a4256087ac82..ae6b17b96bf1 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
@@ -919,8 +919,8 @@ static int csk_wait_memory(struct chtls_dev *cdev,
current_timeo = *timeo_p;
noblock = (*timeo_p ? false : true);
if (csk_mem_free(cdev, sk)) {
- current_timeo = prandom_u32_max(HZ / 5) + 2;
- vm_wait = prandom_u32_max(HZ / 5) + 2;
+ current_timeo = get_random_u32_below(HZ / 5) + 2;
+ vm_wait = get_random_u32_below(HZ / 5) + 2;
}
add_wait_queue(sk_sleep(sk), &wait);
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 349b7b1dbbf2..b07513c61c35 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1758,7 +1758,7 @@ static int qca808x_phy_fast_retrain_config(struct phy_device *phydev)
static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev)
{
- u16 seed_value = prandom_u32_max(QCA808X_MASTER_SLAVE_SEED_RANGE);
+ u16 seed_value = get_random_u32_below(QCA808X_MASTER_SLAVE_SEED_RANGE);
return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
QCA808X_MASTER_SLAVE_SEED_CFG,
diff --git a/drivers/net/team/team_mode_random.c b/drivers/net/team/team_mode_random.c
index f3f8dd428402..53d0ce34b8ce 100644
--- a/drivers/net/team/team_mode_random.c
+++ b/drivers/net/team/team_mode_random.c
@@ -16,7 +16,7 @@ static bool rnd_transmit(struct team *team, struct sk_buff *skb)
struct team_port *port;
int port_index;
- port_index = prandom_u32_max(team->en_port_count);
+ port_index = get_random_u32_below(team->en_port_count);
port = team_get_port_by_index_rcu(team, port_index);
if (unlikely(!port))
goto drop;
diff --git a/drivers/net/wireguard/selftest/allowedips.c b/drivers/net/wireguard/selftest/allowedips.c
index 19eac00b2381..78a916f30c82 100644
--- a/drivers/net/wireguard/selftest/allowedips.c
+++ b/drivers/net/wireguard/selftest/allowedips.c
@@ -285,8 +285,8 @@ static __init bool randomized_test(void)
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
get_random_bytes(ip, 4);
- cidr = prandom_u32_max(32) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(32) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr,
peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
@@ -300,7 +300,7 @@ static __init bool randomized_test(void)
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 4);
get_random_bytes(mutate_mask, 4);
- mutate_amount = prandom_u32_max(32);
+ mutate_amount = get_random_u32_below(32);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
mutate_mask[k] = 0xff
@@ -311,8 +311,8 @@ static __init bool randomized_test(void)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
get_random_u8());
- cidr = prandom_u32_max(32) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(32) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t,
(struct in_addr *)mutated,
cidr, peer, &mutex) < 0) {
@@ -329,8 +329,8 @@ static __init bool randomized_test(void)
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
get_random_bytes(ip, 16);
- cidr = prandom_u32_max(128) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(128) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr,
peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
@@ -344,7 +344,7 @@ static __init bool randomized_test(void)
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 16);
get_random_bytes(mutate_mask, 16);
- mutate_amount = prandom_u32_max(128);
+ mutate_amount = get_random_u32_below(128);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
mutate_mask[k] = 0xff
@@ -355,8 +355,8 @@ static __init bool randomized_test(void)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
get_random_u8());
- cidr = prandom_u32_max(128) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(128) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t,
(struct in6_addr *)mutated,
cidr, peer, &mutex) < 0) {
diff --git a/drivers/net/wireguard/timers.c b/drivers/net/wireguard/timers.c
index d54d32ac9bc4..b5706b6718b1 100644
--- a/drivers/net/wireguard/timers.c
+++ b/drivers/net/wireguard/timers.c
@@ -147,7 +147,7 @@ void wg_timers_data_sent(struct wg_peer *peer)
if (!timer_pending(&peer->timer_new_handshake))
mod_peer_timer(peer, &peer->timer_new_handshake,
jiffies + (KEEPALIVE_TIMEOUT + REKEY_TIMEOUT) * HZ +
- prandom_u32_max(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
+ get_random_u32_below(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
}
/* Should be called after an authenticated data packet is received. */
@@ -183,7 +183,7 @@ void wg_timers_handshake_initiated(struct wg_peer *peer)
{
mod_peer_timer(peer, &peer->timer_retransmit_handshake,
jiffies + REKEY_TIMEOUT * HZ +
- prandom_u32_max(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
+ get_random_u32_below(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
}
/* Should be called after a handshake response message is received and processed
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index 10d9d9c63b28..23c971b77965 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -1128,7 +1128,7 @@ static void brcmf_p2p_afx_handler(struct work_struct *work)
if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
/* 100ms ~ 300ms */
err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
- 100 * (1 + prandom_u32_max(3)));
+ 100 * (1 + get_random_u32_below(3)));
else
err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index de0c545d50fd..1696fbf1009a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1099,7 +1099,7 @@ static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
iwl_mvm_mac_ap_iterator, &data);
if (data.beacon_device_ts) {
- u32 rand = prandom_u32_max(64 - 36) + 36;
+ u32 rand = get_random_u32_below(64 - 36) + 36;
mvmvif->ap_beacon_time = data.beacon_device_ts +
ieee80211_tu_to_usec(data.beacon_int * rand /
100);
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 88dc66ee1c46..5565f67d6537 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -673,7 +673,7 @@ struct pci_dev *pci_p2pmem_find_many(struct device **clients, int num_clients)
}
if (dev_cnt)
- pdev = pci_dev_get(closest_pdevs[prandom_u32_max(dev_cnt)]);
+ pdev = pci_dev_get(closest_pdevs[get_random_u32_below(dev_cnt)]);
for (i = 0; i < dev_cnt; i++)
pci_dev_put(closest_pdevs[i]);
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 77917b339870..f21307537829 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -48,7 +48,7 @@ unsigned int zfcp_fc_port_scan_backoff(void)
{
if (!port_scan_backoff)
return 0;
- return prandom_u32_max(port_scan_backoff);
+ return get_random_u32_below(port_scan_backoff);
}
static void zfcp_fc_port_scan_time(struct zfcp_adapter *adapter)
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index ddc048069af2..5c8d1ba3f8f3 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -2233,7 +2233,7 @@ static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
fip->probe_tries++;
- wait = prandom_u32_max(FIP_VN_PROBE_WAIT);
+ wait = get_random_u32_below(FIP_VN_PROBE_WAIT);
} else
wait = FIP_VN_RLIM_INT;
mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
@@ -3125,7 +3125,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
fcoe_all_vn2vn, 0);
fip->port_ka_time = jiffies +
msecs_to_jiffies(FIP_VN_BEACON_INT +
- prandom_u32_max(FIP_VN_BEACON_FUZZ));
+ get_random_u32_below(FIP_VN_BEACON_FUZZ));
}
if (time_before(fip->port_ka_time, next_time))
next_time = fip->port_ka_time;
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index df2fe7bd26d1..f2ee49756df8 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -618,7 +618,7 @@ static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
sizeof(struct qedi_endpoint *)), GFP_KERNEL);
if (!qedi->ep_tbl)
return -ENOMEM;
- port_id = prandom_u32_max(QEDI_LOCAL_PORT_RANGE);
+ port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE);
if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
QEDI_LOCAL_PORT_MIN, port_id)) {
qedi_cm_free_mem(qedi);
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 697fc57bc711..4e476f1bc3c3 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -5695,16 +5695,16 @@ static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
u64 ns = jiffies_to_nsecs(delta_jiff);
if (sdebug_random && ns < U32_MAX) {
- ns = prandom_u32_max((u32)ns);
+ ns = get_random_u32_below((u32)ns);
} else if (sdebug_random) {
ns >>= 12; /* scale to 4 usec precision */
if (ns < U32_MAX) /* over 4 hours max */
- ns = prandom_u32_max((u32)ns);
+ ns = get_random_u32_below((u32)ns);
ns <<= 12;
}
kt = ns_to_ktime(ns);
} else { /* ndelay has a 4.2 second max */
- kt = sdebug_random ? prandom_u32_max((u32)ndelay) :
+ kt = sdebug_random ? get_random_u32_below((u32)ndelay) :
(u32)ndelay;
if (ndelay < INCLUSIVE_TIMING_MAX_NS) {
u64 d = ktime_get_boottime_ns() - ns_from_boot;
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 4af5e55abc15..fb255988dee8 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -362,7 +362,7 @@ static int ceph_fill_fragtree(struct inode *inode,
if (nsplits != ci->i_fragtree_nsplits) {
update = true;
} else if (nsplits) {
- i = prandom_u32_max(nsplits);
+ i = get_random_u32_below(nsplits);
id = le32_to_cpu(fragtree->splits[i].frag);
if (!__ceph_find_frag(ci, id))
update = true;
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 3fbabc98e1f7..7dac21ee6ce7 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -29,7 +29,7 @@ static int __mdsmap_get_random_mds(struct ceph_mdsmap *m, bool ignore_laggy)
return -1;
/* pick */
- n = prandom_u32_max(n);
+ n = get_random_u32_below(n);
for (j = 0, i = 0; i < m->possible_max_rank; i++) {
if (CEPH_MDS_IS_READY(i, ignore_laggy))
j++;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index f4944c4dee60..78b8686d9a4a 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -277,7 +277,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
int best_ndir = inodes_per_group;
int best_group = -1;
- parent_group = prandom_u32_max(ngroups);
+ parent_group = get_random_u32_below(ngroups);
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
desc = ext2_get_group_desc (sb, group, NULL);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index e9bc46684106..9fc1af8e19a3 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -465,7 +465,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
ext4fs_dirhash(parent, qstr->name, qstr->len, &hinfo);
parent_group = hinfo.hash % ngroups;
} else
- parent_group = prandom_u32_max(ngroups);
+ parent_group = get_random_u32_below(ngroups);
for (i = 0; i < ngroups; i++) {
g = (parent_group + i) % ngroups;
get_orlov_stats(sb, g, flex_size, &stats);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 7cdd2138c897..63ef74eb8091 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3778,7 +3778,7 @@ cont_thread:
}
if (!progress) {
elr->lr_next_sched = jiffies +
- prandom_u32_max(EXT4_DEF_LI_MAX_START_DELAY * HZ);
+ get_random_u32_below(EXT4_DEF_LI_MAX_START_DELAY * HZ);
}
if (time_before(elr->lr_next_sched, next_wakeup))
next_wakeup = elr->lr_next_sched;
@@ -3925,8 +3925,7 @@ static struct ext4_li_request *ext4_li_request_new(struct super_block *sb,
* spread the inode table initialization requests
* better.
*/
- elr->lr_next_sched = jiffies + prandom_u32_max(
- EXT4_DEF_LI_MAX_START_DELAY * HZ);
+ elr->lr_next_sched = jiffies + get_random_u32_below(EXT4_DEF_LI_MAX_START_DELAY * HZ);
return elr;
}
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 4546e01b2ee0..536d332d9e2e 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -282,7 +282,7 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
/* let's select beginning hot/small space first in no_heap mode*/
if (f2fs_need_rand_seg(sbi))
- p->offset = prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ p->offset = get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
else if (test_opt(sbi, NOHEAP) &&
(type == CURSEG_HOT_DATA || IS_NODESEG(type)))
p->offset = 0;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index acf3d3fa4363..334415d946f8 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2534,7 +2534,7 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
sanity_check_seg_type(sbi, seg_type);
if (f2fs_need_rand_seg(sbi))
- return prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ return get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
/* if segs_per_sec is large than 1, we need to keep original policy. */
if (__is_large_section(sbi))
@@ -2588,7 +2588,7 @@ static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
curseg->alloc_type = LFS;
if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
curseg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_below(sbi->max_fragment_chunk) + 1;
}
static int __next_free_blkoff(struct f2fs_sb_info *sbi,
@@ -2625,9 +2625,9 @@ static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
/* To allocate block chunks in different sizes, use random number */
if (--seg->fragment_remained_chunk <= 0) {
seg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_below(sbi->max_fragment_chunk) + 1;
seg->next_blkoff +=
- prandom_u32_max(sbi->max_fragment_hole) + 1;
+ get_random_u32_below(sbi->max_fragment_hole) + 1;
}
}
}
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 3f128b9fdfbb..9c9d3f0e36a4 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2467,7 +2467,7 @@ error_dump:
static inline int chance(unsigned int n, unsigned int out_of)
{
- return !!(prandom_u32_max(out_of) + 1 <= n);
+ return !!(get_random_u32_below(out_of) + 1 <= n);
}
@@ -2485,13 +2485,13 @@ static int power_cut_emulated(struct ubifs_info *c, int lnum, int write)
if (chance(1, 2)) {
d->pc_delay = 1;
/* Fail within 1 minute */
- delay = prandom_u32_max(60000);
+ delay = get_random_u32_below(60000);
d->pc_timeout = jiffies;
d->pc_timeout += msecs_to_jiffies(delay);
ubifs_warn(c, "failing after %lums", delay);
} else {
d->pc_delay = 2;
- delay = prandom_u32_max(10000);
+ delay = get_random_u32_below(10000);
/* Fail within 10000 operations */
d->pc_cnt_max = delay;
ubifs_warn(c, "failing after %lu calls", delay);
@@ -2571,7 +2571,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf,
unsigned int from, to, ffs = chance(1, 2);
unsigned char *p = (void *)buf;
- from = prandom_u32_max(len);
+ from = get_random_u32_below(len);
/* Corruption span max to end of write unit */
to = min(len, ALIGN(from + 1, c->max_write_size));
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index cfbc31f709f4..c4d079328b92 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1970,28 +1970,28 @@ static int dbg_populate_lsave(struct ubifs_info *c)
if (!dbg_is_chk_gen(c))
return 0;
- if (prandom_u32_max(4))
+ if (get_random_u32_below(4))
return 0;
for (i = 0; i < c->lsave_cnt; i++)
c->lsave[i] = c->main_first;
list_for_each_entry(lprops, &c->empty_list, list)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
list_for_each_entry(lprops, &c->freeable_list, list)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
list_for_each_entry(lprops, &c->frdi_idx_list, list)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_FREE - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
return 1;
}
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 01362ad5f804..a55e04822d16 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -700,7 +700,7 @@ static int alloc_idx_lebs(struct ubifs_info *c, int cnt)
c->ilebs[c->ileb_cnt++] = lnum;
dbg_cmt("LEB %d", lnum);
}
- if (dbg_is_chk_index(c) && !prandom_u32_max(8))
+ if (dbg_is_chk_index(c) && !get_random_u32_below(8))
return -ENOSPC;
return 0;
}
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index de79f5d07f65..989cf341779b 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -1516,7 +1516,7 @@ xfs_alloc_ag_vextent_lastblock(
#ifdef DEBUG
/* Randomly don't execute the first algorithm. */
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
return 0;
#endif
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 94db50eb706a..5118dedf9267 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -636,7 +636,7 @@ xfs_ialloc_ag_alloc(
/* randomly do sparse inode allocations */
if (xfs_has_sparseinodes(tp->t_mountp) &&
igeo->ialloc_min_blks < igeo->ialloc_blks)
- do_sparse = prandom_u32_max(2);
+ do_sparse = get_random_u32_below(2);
#endif
/*
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index c6b2aabd6f18..822e6a0e9d1a 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -279,7 +279,7 @@ xfs_errortag_test(
ASSERT(error_tag < XFS_ERRTAG_MAX);
randfactor = mp->m_errortag[error_tag];
- if (!randfactor || prandom_u32_max(randfactor))
+ if (!randfactor || get_random_u32_below(randfactor))
return false;
xfs_warn_ratelimited(mp,
diff --git a/include/linux/damon.h b/include/linux/damon.h
index 620ada094c3b..84525b9cdf6e 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -21,7 +21,7 @@
/* Get a random number in [l, r) */
static inline unsigned long damon_rand(unsigned long l, unsigned long r)
{
- return l + prandom_u32_max(r - l);
+ return l + get_random_u32_below(r - l);
}
/**
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index efef68c9352a..bb0ee80526b2 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -516,7 +516,7 @@ static inline int node_random(const nodemask_t *maskp)
bit = first_node(*maskp);
break;
default:
- bit = find_nth_bit(maskp->bits, MAX_NUMNODES, prandom_u32_max(w));
+ bit = find_nth_bit(maskp->bits, MAX_NUMNODES, get_random_u32_below(w));
break;
}
return bit;
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 25a54e04560e..38159f39e2af 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -1032,7 +1032,7 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
hdr->size = size;
hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
PAGE_SIZE - sizeof(*hdr));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
/* Leave a random number of instructions before BPF code. */
*image_ptr = &hdr->image[start];
@@ -1094,7 +1094,7 @@ bpf_jit_binary_pack_alloc(unsigned int proglen, u8 **image_ptr,
hole = min_t(unsigned int, size - (proglen + sizeof(*ro_header)),
BPF_PROG_CHUNK_SIZE - sizeof(*ro_header));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
*image_ptr = &ro_header->image[start];
*rw_image = &(*rw_header)->image[start];
diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c
index 1740ce389e7f..7b619f16a492 100644
--- a/kernel/kcsan/selftest.c
+++ b/kernel/kcsan/selftest.c
@@ -31,8 +31,8 @@ static bool __init test_encode_decode(void)
int i;
for (i = 0; i < ITERS_PER_TEST; ++i) {
- size_t size = prandom_u32_max(MAX_ENCODABLE_SIZE) + 1;
- bool is_write = !!prandom_u32_max(2);
+ size_t size = get_random_u32_below(MAX_ENCODABLE_SIZE) + 1;
+ bool is_write = !!get_random_u32_below(2);
unsigned long verif_masked_addr;
long encoded_watchpoint;
bool verif_is_write;
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 43efb2a04160..29dc253d03af 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -399,7 +399,7 @@ static int *get_random_order(int count)
order[n] = n;
for (n = count - 1; n > 1; n--) {
- r = prandom_u32_max(n + 1);
+ r = get_random_u32_below(n + 1);
if (r != n) {
tmp = order[n];
order[n] = order[r];
@@ -538,7 +538,7 @@ static void stress_one_work(struct work_struct *work)
{
struct stress *stress = container_of(work, typeof(*stress), work);
const int nlocks = stress->nlocks;
- struct ww_mutex *lock = stress->locks + prandom_u32_max(nlocks);
+ struct ww_mutex *lock = stress->locks + get_random_u32_below(nlocks);
int err;
do {
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 8058bec87ace..9cf32ccda715 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -310,7 +310,7 @@ static void clocksource_verify_choose_cpus(void)
* CPUs that are currently online.
*/
for (i = 1; i < n; i++) {
- cpu = prandom_u32_max(nr_cpu_ids);
+ cpu = get_random_u32_below(nr_cpu_ids);
cpu = cpumask_next(cpu - 1, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = cpumask_first(cpu_online_mask);
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 96e092de5b72..9f53408c545d 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -139,7 +139,7 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
return false;
}
- if (attr->probability <= prandom_u32_max(100))
+ if (attr->probability <= get_random_u32_below(100))
return false;
if (!fail_stacktrace(attr))
diff --git a/lib/find_bit_benchmark.c b/lib/find_bit_benchmark.c
index 7c3c011abd29..d3fb09e6eff1 100644
--- a/lib/find_bit_benchmark.c
+++ b/lib/find_bit_benchmark.c
@@ -174,8 +174,8 @@ static int __init find_bit_test(void)
bitmap_zero(bitmap2, BITMAP_LEN);
while (nbits--) {
- __set_bit(prandom_u32_max(BITMAP_LEN), bitmap);
- __set_bit(prandom_u32_max(BITMAP_LEN), bitmap2);
+ __set_bit(get_random_u32_below(BITMAP_LEN), bitmap);
+ __set_bit(get_random_u32_below(BITMAP_LEN), bitmap2);
}
test_find_next_bit(bitmap, BITMAP_LEN);
diff --git a/lib/kobject.c b/lib/kobject.c
index a0b2dbfcfa23..af1f5f2954d4 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -694,7 +694,7 @@ static void kobject_release(struct kref *kref)
{
struct kobject *kobj = container_of(kref, struct kobject, kref);
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
- unsigned long delay = HZ + HZ * prandom_u32_max(4);
+ unsigned long delay = HZ + HZ * get_random_u32_below(4);
pr_info("kobject: '%s' (%p): %s, parent %p (delayed %ld)\n",
kobject_name(kobj), kobj, __func__, kobj->parent, delay);
INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);
diff --git a/lib/reed_solomon/test_rslib.c b/lib/reed_solomon/test_rslib.c
index 848e7eb5da92..75cb1adac884 100644
--- a/lib/reed_solomon/test_rslib.c
+++ b/lib/reed_solomon/test_rslib.c
@@ -183,7 +183,7 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
do {
/* Must not choose the same location twice */
- errloc = prandom_u32_max(len);
+ errloc = get_random_u32_below(len);
} while (errlocs[errloc] != 0);
errlocs[errloc] = 1;
@@ -194,12 +194,12 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
for (i = 0; i < eras; i++) {
do {
/* Must not choose the same location twice */
- errloc = prandom_u32_max(len);
+ errloc = get_random_u32_below(len);
} while (errlocs[errloc] != 0);
derrlocs[i] = errloc;
- if (ewsc && prandom_u32_max(2)) {
+ if (ewsc && get_random_u32_below(2)) {
/* Erasure with the symbol intact */
errlocs[errloc] = 2;
} else {
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index 7280ae8ca88c..58de526ff051 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -21,7 +21,7 @@ static int init_alloc_hint(struct sbitmap *sb, gfp_t flags)
int i;
for_each_possible_cpu(i)
- *per_cpu_ptr(sb->alloc_hint, i) = prandom_u32_max(depth);
+ *per_cpu_ptr(sb->alloc_hint, i) = get_random_u32_below(depth);
}
return 0;
}
@@ -33,7 +33,7 @@ static inline unsigned update_alloc_hint_before_get(struct sbitmap *sb,
hint = this_cpu_read(*sb->alloc_hint);
if (unlikely(hint >= depth)) {
- hint = depth ? prandom_u32_max(depth) : 0;
+ hint = depth ? get_random_u32_below(depth) : 0;
this_cpu_write(*sb->alloc_hint, hint);
}
diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c
index 86fadd3ba08c..41d3447bc3b4 100644
--- a/lib/test-string_helpers.c
+++ b/lib/test-string_helpers.c
@@ -587,7 +587,7 @@ static int __init test_string_helpers_init(void)
for (i = 0; i < UNESCAPE_ALL_MASK + 1; i++)
test_string_unescape("unescape", i, false);
test_string_unescape("unescape inplace",
- prandom_u32_max(UNESCAPE_ANY + 1), true);
+ get_random_u32_below(UNESCAPE_ANY + 1), true);
/* Without dictionary */
for (i = 0; i < ESCAPE_ALL_MASK + 1; i++)
diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 0927f44cd478..efc50fd30a44 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -149,7 +149,7 @@ static void __init test_hexdump(size_t len, int rowsize, int groupsize,
static void __init test_hexdump_set(int rowsize, bool ascii)
{
size_t d = min_t(size_t, sizeof(data_b), rowsize);
- size_t len = prandom_u32_max(d) + 1;
+ size_t len = get_random_u32_below(d) + 1;
test_hexdump(len, rowsize, 4, ascii);
test_hexdump(len, rowsize, 2, ascii);
@@ -208,11 +208,11 @@ static void __init test_hexdump_overflow(size_t buflen, size_t len,
static void __init test_hexdump_overflow_set(size_t buflen, bool ascii)
{
unsigned int i = 0;
- int rs = (prandom_u32_max(2) + 1) * 16;
+ int rs = (get_random_u32_below(2) + 1) * 16;
do {
int gs = 1 << i;
- size_t len = prandom_u32_max(rs) + gs;
+ size_t len = get_random_u32_below(rs) + gs;
test_hexdump_overflow(buflen, rounddown(len, gs), rs, gs, ascii);
} while (i++ < 3);
@@ -223,11 +223,11 @@ static int __init test_hexdump_init(void)
unsigned int i;
int rowsize;
- rowsize = (prandom_u32_max(2) + 1) * 16;
+ rowsize = (get_random_u32_below(2) + 1) * 16;
for (i = 0; i < 16; i++)
test_hexdump_set(rowsize, false);
- rowsize = (prandom_u32_max(2) + 1) * 16;
+ rowsize = (get_random_u32_below(2) + 1) * 16;
for (i = 0; i < 16; i++)
test_hexdump_set(rowsize, true);
diff --git a/lib/test_list_sort.c b/lib/test_list_sort.c
index 19ff229b9c3a..cc5f335f29b5 100644
--- a/lib/test_list_sort.c
+++ b/lib/test_list_sort.c
@@ -71,7 +71,7 @@ static void list_sort_test(struct kunit *test)
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, el);
/* force some equivalencies */
- el->value = prandom_u32_max(TEST_LIST_LEN / 3);
+ el->value = get_random_u32_below(TEST_LIST_LEN / 3);
el->serial = i;
el->poison1 = TEST_POISON1;
el->poison2 = TEST_POISON2;
diff --git a/lib/test_printf.c b/lib/test_printf.c
index 4bd15a593fbd..6d10187eddac 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -126,7 +126,7 @@ __test(const char *expect, int elen, const char *fmt, ...)
* be able to print it as expected.
*/
failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap);
- rand = 1 + prandom_u32_max(elen+1);
+ rand = 1 + get_random_u32_below(elen + 1);
/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
failed_tests += do_test(rand, expect, elen, fmt, ap);
failed_tests += do_test(0, expect, elen, fmt, ap);
diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c
index f2ba5787055a..6a8e445c8b55 100644
--- a/lib/test_rhashtable.c
+++ b/lib/test_rhashtable.c
@@ -368,8 +368,8 @@ static int __init test_rhltable(unsigned int entries)
pr_info("test %d random rhlist add/delete operations\n", entries);
for (j = 0; j < entries; j++) {
- u32 i = prandom_u32_max(entries);
- u32 prand = prandom_u32_max(4);
+ u32 i = get_random_u32_below(entries);
+ u32 prand = get_random_u32_below(4);
cond_resched();
@@ -396,7 +396,7 @@ static int __init test_rhltable(unsigned int entries)
}
if (prand & 2) {
- i = prandom_u32_max(entries);
+ i = get_random_u32_below(entries);
if (test_bit(i, obj_in_table)) {
err = rhltable_remove(&rhlt, &rhl_test_objects[i].list_node, test_rht_params);
WARN(err, "cannot remove element at slot %d", i);
diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index cf7780572f5b..104f09ea5fcc 100644
--- a/lib/test_vmalloc.c
+++ b/lib/test_vmalloc.c
@@ -151,7 +151,7 @@ static int random_size_alloc_test(void)
int i;
for (i = 0; i < test_loop_count; i++) {
- n = prandom_u32_max(100) + 1;
+ n = get_random_u32_below(100) + 1;
p = vmalloc(n * PAGE_SIZE);
if (!p)
@@ -291,12 +291,12 @@ pcpu_alloc_test(void)
return -1;
for (i = 0; i < 35000; i++) {
- size = prandom_u32_max(PAGE_SIZE / 4) + 1;
+ size = get_random_u32_below(PAGE_SIZE / 4) + 1;
/*
* Maximum PAGE_SIZE
*/
- align = 1 << (prandom_u32_max(11) + 1);
+ align = 1 << (get_random_u32_below(11) + 1);
pcpu[i] = __alloc_percpu(size, align);
if (!pcpu[i])
@@ -391,7 +391,7 @@ static void shuffle_array(int *arr, int n)
for (i = n - 1; i > 0; i--) {
/* Cut the range. */
- j = prandom_u32_max(i);
+ j = get_random_u32_below(i);
/* Swap indexes. */
swap(arr[i], arr[j]);
diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c
index 0d59098f0876..640f9c7f8e44 100644
--- a/mm/kasan/kasan_test.c
+++ b/mm/kasan/kasan_test.c
@@ -1299,7 +1299,7 @@ static void match_all_not_assigned(struct kunit *test)
KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
for (i = 0; i < 256; i++) {
- size = prandom_u32_max(1024) + 1;
+ size = get_random_u32_below(1024) + 1;
ptr = kmalloc(size, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
@@ -1308,7 +1308,7 @@ static void match_all_not_assigned(struct kunit *test)
}
for (i = 0; i < 256; i++) {
- order = prandom_u32_max(4) + 1;
+ order = get_random_u32_below(4) + 1;
pages = alloc_pages(GFP_KERNEL, order);
ptr = page_address(pages);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
@@ -1321,7 +1321,7 @@ static void match_all_not_assigned(struct kunit *test)
return;
for (i = 0; i < 256; i++) {
- size = prandom_u32_max(1024) + 1;
+ size = get_random_u32_below(1024) + 1;
ptr = vmalloc(size);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
diff --git a/mm/kfence/core.c b/mm/kfence/core.c
index 141788858b70..6cbd93f2007b 100644
--- a/mm/kfence/core.c
+++ b/mm/kfence/core.c
@@ -360,9 +360,9 @@ static void *kfence_guarded_alloc(struct kmem_cache *cache, size_t size, gfp_t g
unsigned long flags;
struct slab *slab;
void *addr;
- const bool random_right_allocate = prandom_u32_max(2);
+ const bool random_right_allocate = get_random_u32_below(2);
const bool random_fault = CONFIG_KFENCE_STRESS_TEST_FAULTS &&
- !prandom_u32_max(CONFIG_KFENCE_STRESS_TEST_FAULTS);
+ !get_random_u32_below(CONFIG_KFENCE_STRESS_TEST_FAULTS);
/* Try to obtain a free object. */
raw_spin_lock_irqsave(&kfence_freelist_lock, flags);
diff --git a/mm/kfence/kfence_test.c b/mm/kfence/kfence_test.c
index a97bffe0cc3e..20028c179796 100644
--- a/mm/kfence/kfence_test.c
+++ b/mm/kfence/kfence_test.c
@@ -532,8 +532,8 @@ static void test_free_bulk(struct kunit *test)
int iter;
for (iter = 0; iter < 5; iter++) {
- const size_t size = setup_test_cache(test, 8 + prandom_u32_max(300), 0,
- (iter & 1) ? ctor_set_x : NULL);
+ const size_t size = setup_test_cache(test, 8 + get_random_u32_below(300),
+ 0, (iter & 1) ? ctor_set_x : NULL);
void *objects[] = {
test_alloc(test, size, GFP_KERNEL, ALLOCATE_RIGHT),
test_alloc(test, size, GFP_KERNEL, ALLOCATE_NONE),
diff --git a/mm/slub.c b/mm/slub.c
index 157527d7101b..7cd2c657030a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1881,7 +1881,7 @@ static bool shuffle_freelist(struct kmem_cache *s, struct slab *slab)
return false;
freelist_count = oo_objects(s->oo);
- pos = prandom_u32_max(freelist_count);
+ pos = get_random_u32_below(freelist_count);
page_limit = slab->objects * s->size;
start = fixup_red_left(s, slab_address(slab));
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 5fc1237a9f21..e9318305a24a 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -773,7 +773,7 @@ static void set_cluster_next(struct swap_info_struct *si, unsigned long next)
if (si->highest_bit <= si->lowest_bit)
return;
next = si->lowest_bit +
- prandom_u32_max(si->highest_bit - si->lowest_bit + 1);
+ get_random_u32_below(si->highest_bit - si->lowest_bit + 1);
next = ALIGN_DOWN(next, SWAP_ADDRESS_SPACE_PAGES);
next = max_t(unsigned int, next, si->lowest_bit);
}
@@ -3089,7 +3089,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
*/
for_each_possible_cpu(cpu) {
per_cpu(*p->cluster_next_cpu, cpu) =
- 1 + prandom_u32_max(p->highest_bit);
+ 1 + get_random_u32_below(p->highest_bit);
}
nr_cluster = DIV_ROUND_UP(maxpages, SWAPFILE_CLUSTER);
diff --git a/net/802/garp.c b/net/802/garp.c
index fc9eb02a912f..77aac2763835 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -407,7 +407,7 @@ static void garp_join_timer_arm(struct garp_applicant *app)
{
unsigned long delay;
- delay = prandom_u32_max(msecs_to_jiffies(garp_join_time));
+ delay = get_random_u32_below(msecs_to_jiffies(garp_join_time));
mod_timer(&app->join_timer, jiffies + delay);
}
diff --git a/net/802/mrp.c b/net/802/mrp.c
index 155f74d8b14f..8c6f0381023b 100644
--- a/net/802/mrp.c
+++ b/net/802/mrp.c
@@ -592,7 +592,7 @@ static void mrp_join_timer_arm(struct mrp_applicant *app)
{
unsigned long delay;
- delay = prandom_u32_max(msecs_to_jiffies(mrp_join_time));
+ delay = get_random_u32_below(msecs_to_jiffies(mrp_join_time));
mod_timer(&app->join_timer, jiffies + delay);
}
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 7f6a7c96ac92..114ee5da261f 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -280,7 +280,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv)
unsigned int msecs;
msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER;
- msecs += prandom_u32_max(2 * BATADV_JITTER);
+ msecs += get_random_u32_below(2 * BATADV_JITTER);
return jiffies + msecs_to_jiffies(msecs);
}
@@ -288,7 +288,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv)
/* when do we schedule a ogm packet to be sent */
static unsigned long batadv_iv_ogm_fwd_send_time(void)
{
- return jiffies + msecs_to_jiffies(prandom_u32_max(BATADV_JITTER / 2));
+ return jiffies + msecs_to_jiffies(get_random_u32_below(BATADV_JITTER / 2));
}
/* apply hop penalty for a normal link */
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index f1741fbfb617..f9a58fb5442e 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -51,7 +51,7 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface)
unsigned int msecs;
msecs = atomic_read(&hard_iface->bat_v.elp_interval) - BATADV_JITTER;
- msecs += prandom_u32_max(2 * BATADV_JITTER);
+ msecs += get_random_u32_below(2 * BATADV_JITTER);
queue_delayed_work(batadv_event_workqueue, &hard_iface->bat_v.elp_wq,
msecs_to_jiffies(msecs));
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 033639df96d8..addfd8c4fe95 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -90,7 +90,7 @@ static void batadv_v_ogm_start_queue_timer(struct batadv_hard_iface *hard_iface)
unsigned int msecs = BATADV_MAX_AGGREGATION_MS * 1000;
/* msecs * [0.9, 1.1] */
- msecs += prandom_u32_max(msecs / 5) - (msecs / 10);
+ msecs += get_random_u32_below(msecs / 5) - (msecs / 10);
queue_delayed_work(batadv_event_workqueue, &hard_iface->bat_v.aggr_wq,
msecs_to_jiffies(msecs / 1000));
}
@@ -109,7 +109,7 @@ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv)
return;
msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER;
- msecs += prandom_u32_max(2 * BATADV_JITTER);
+ msecs += get_random_u32_below(2 * BATADV_JITTER);
queue_delayed_work(batadv_event_workqueue, &bat_priv->bat_v.ogm_wq,
msecs_to_jiffies(msecs));
}
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 5f4aeeb60dc4..bf29fba4dde5 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1009,7 +1009,7 @@ static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv,
static u8 batadv_nc_random_weight_tq(u8 tq)
{
/* randomize the estimated packet loss (max TQ - estimated TQ) */
- u8 rand_tq = prandom_u32_max(BATADV_TQ_MAX_VALUE + 1 - tq);
+ u8 rand_tq = get_random_u32_below(BATADV_TQ_MAX_VALUE + 1 - tq);
/* convert to (randomized) estimated tq again */
return BATADV_TQ_MAX_VALUE - rand_tq;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a92e7e485feb..b2f9679066c4 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7374,8 +7374,8 @@ static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
* calculate conn info age as random value between min/max set in hdev.
*/
conn_info_age = hdev->conn_info_min_age +
- prandom_u32_max(hdev->conn_info_max_age -
- hdev->conn_info_min_age);
+ get_random_u32_below(hdev->conn_info_max_age -
+ hdev->conn_info_min_age);
/* Query controller to refresh cached values if they are too old or were
* never read.
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index b670ba03a675..7e90f9e61d9b 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -189,7 +189,7 @@ activate_next:
int time_ms = 0;
if (err)
- time_ms = 10 + prandom_u32_max(16);
+ time_ms = 10 + get_random_u32_below(16);
j1939_tp_schedule_txtimer(first, time_ms);
}
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index 55f29c9f9e08..67d36776aff4 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -1168,7 +1168,7 @@ static enum hrtimer_restart j1939_tp_txtimer(struct hrtimer *hrtimer)
if (session->tx_retry < J1939_XTP_TX_RETRY_LIMIT) {
session->tx_retry++;
j1939_tp_schedule_txtimer(session,
- 10 + prandom_u32_max(16));
+ 10 + get_random_u32_below(16));
} else {
netdev_alert(priv->ndev, "%s: 0x%p: tx retry count reached\n",
__func__, session);
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index db60217f911b..faabad6603db 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -222,7 +222,7 @@ static void pick_new_mon(struct ceph_mon_client *monc)
max--;
}
- n = prandom_u32_max(max);
+ n = get_random_u32_below(max);
if (o >= 0 && n >= o)
n++;
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 4e4f1e4bc265..11c04e7d928e 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1479,7 +1479,7 @@ static bool target_should_be_paused(struct ceph_osd_client *osdc,
static int pick_random_replica(const struct ceph_osds *acting)
{
- int i = prandom_u32_max(acting->size);
+ int i = get_random_u32_below(acting->size);
dout("%s picked osd%d, primary osd%d\n", __func__,
acting->osds[i], acting->primary);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index a77a85e357e0..ba92762de525 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -111,7 +111,7 @@ static void neigh_cleanup_and_release(struct neighbour *neigh)
unsigned long neigh_rand_reach_time(unsigned long base)
{
- return base ? prandom_u32_max(base) + (base >> 1) : 0;
+ return base ? get_random_u32_below(base) + (base >> 1) : 0;
}
EXPORT_SYMBOL(neigh_rand_reach_time);
@@ -1652,7 +1652,7 @@ void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
struct sk_buff *skb)
{
unsigned long sched_next = jiffies +
- prandom_u32_max(NEIGH_VAR(p, PROXY_DELAY));
+ get_random_u32_below(NEIGH_VAR(p, PROXY_DELAY));
if (p->qlen > NEIGH_VAR(p, PROXY_QLEN)) {
kfree_skb(skb);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index c3763056c554..95da2ddc1c20 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2324,7 +2324,7 @@ static inline int f_pick(struct pktgen_dev *pkt_dev)
pkt_dev->curfl = 0; /*reset */
}
} else {
- flow = prandom_u32_max(pkt_dev->cflows);
+ flow = get_random_u32_below(pkt_dev->cflows);
pkt_dev->curfl = flow;
if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
@@ -2380,8 +2380,8 @@ static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
__u16 t;
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
- t = prandom_u32_max(pkt_dev->queue_map_max -
- pkt_dev->queue_map_min + 1) +
+ t = get_random_u32_below(pkt_dev->queue_map_max -
+ pkt_dev->queue_map_min + 1) +
pkt_dev->queue_map_min;
} else {
t = pkt_dev->cur_queue_map + 1;
@@ -2411,7 +2411,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACSRC_RND)
- mc = prandom_u32_max(pkt_dev->src_mac_count);
+ mc = get_random_u32_below(pkt_dev->src_mac_count);
else {
mc = pkt_dev->cur_src_mac_offset++;
if (pkt_dev->cur_src_mac_offset >=
@@ -2437,7 +2437,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACDST_RND)
- mc = prandom_u32_max(pkt_dev->dst_mac_count);
+ mc = get_random_u32_below(pkt_dev->dst_mac_count);
else {
mc = pkt_dev->cur_dst_mac_offset++;
@@ -2469,16 +2469,16 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
}
if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
- pkt_dev->vlan_id = prandom_u32_max(4096);
+ pkt_dev->vlan_id = get_random_u32_below(4096);
}
if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
- pkt_dev->svlan_id = prandom_u32_max(4096);
+ pkt_dev->svlan_id = get_random_u32_below(4096);
}
if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
if (pkt_dev->flags & F_UDPSRC_RND)
- pkt_dev->cur_udp_src = prandom_u32_max(
+ pkt_dev->cur_udp_src = get_random_u32_below(
pkt_dev->udp_src_max - pkt_dev->udp_src_min) +
pkt_dev->udp_src_min;
@@ -2491,7 +2491,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
if (pkt_dev->flags & F_UDPDST_RND) {
- pkt_dev->cur_udp_dst = prandom_u32_max(
+ pkt_dev->cur_udp_dst = get_random_u32_below(
pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) +
pkt_dev->udp_dst_min;
} else {
@@ -2508,7 +2508,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (imn < imx) {
__u32 t;
if (pkt_dev->flags & F_IPSRC_RND)
- t = prandom_u32_max(imx - imn) + imn;
+ t = get_random_u32_below(imx - imn) + imn;
else {
t = ntohl(pkt_dev->cur_saddr);
t++;
@@ -2530,7 +2530,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->flags & F_IPDST_RND) {
do {
- t = prandom_u32_max(imx - imn) +
+ t = get_random_u32_below(imx - imn) +
imn;
s = htonl(t);
} while (ipv4_is_loopback(s) ||
@@ -2578,8 +2578,8 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
__u32 t;
if (pkt_dev->flags & F_TXSIZE_RND) {
- t = prandom_u32_max(pkt_dev->max_pkt_size -
- pkt_dev->min_pkt_size) +
+ t = get_random_u32_below(pkt_dev->max_pkt_size -
+ pkt_dev->min_pkt_size) +
pkt_dev->min_pkt_size;
} else {
t = pkt_dev->cur_pkt_size + 1;
@@ -2589,7 +2589,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
pkt_dev->cur_pkt_size = t;
} else if (pkt_dev->n_imix_entries > 0) {
struct imix_pkt *entry;
- __u32 t = prandom_u32_max(IMIX_PRECISION);
+ __u32 t = get_random_u32_below(IMIX_PRECISION);
__u8 entry_index = pkt_dev->imix_distribution[t];
entry = &pkt_dev->imix_entries[entry_index];
diff --git a/net/core/stream.c b/net/core/stream.c
index 75fded8495f5..5b1fe2b82eac 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -123,7 +123,7 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
DEFINE_WAIT_FUNC(wait, woken_wake_function);
if (sk_stream_memory_free(sk))
- current_timeo = vm_wait = prandom_u32_max(HZ / 5) + 2;
+ current_timeo = vm_wait = get_random_u32_below(HZ / 5) + 2;
add_wait_queue(sk_sleep(sk), &wait);
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index d5d745c3e345..46aa2d65e40a 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -263,7 +263,7 @@ bool icmp_global_allow(void)
/* We want to use a credit of one in average, but need to randomize
* it for security reasons.
*/
- credit = max_t(int, credit - prandom_u32_max(3), 0);
+ credit = max_t(int, credit - get_random_u32_below(3), 0);
rc = true;
}
WRITE_ONCE(icmp_global.credit, credit);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 81be3e0f0e70..c920aa9a62a9 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -213,7 +213,7 @@ static void igmp_stop_timer(struct ip_mc_list *im)
/* It must be called with locked im->lock */
static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
{
- int tv = prandom_u32_max(max_delay);
+ int tv = get_random_u32_below(max_delay);
im->tm_running = 1;
if (!mod_timer(&im->timer, jiffies+tv+2))
@@ -222,7 +222,7 @@ static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
static void igmp_gq_start_timer(struct in_device *in_dev)
{
- int tv = prandom_u32_max(in_dev->mr_maxdelay);
+ int tv = get_random_u32_below(in_dev->mr_maxdelay);
unsigned long exp = jiffies + tv + 2;
if (in_dev->mr_gq_running &&
@@ -236,7 +236,7 @@ static void igmp_gq_start_timer(struct in_device *in_dev)
static void igmp_ifc_start_timer(struct in_device *in_dev, int delay)
{
- int tv = prandom_u32_max(delay);
+ int tv = get_random_u32_below(delay);
if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2))
in_dev_hold(in_dev);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 4e84ed21d16f..f22051219b50 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -314,7 +314,7 @@ other_half_scan:
if (likely(remaining > 1))
remaining &= ~1U;
- offset = prandom_u32_max(remaining);
+ offset = get_random_u32_below(remaining);
/* __inet_hash_connect() favors ports having @low parity
* We do the opposite to not pollute connect() users.
*/
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index d3dc28156622..a879ec1a267d 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -1037,7 +1037,7 @@ ok:
* on low contention the randomness is maximal and on high contention
* it may be inexistent.
*/
- i = max_t(int, i, prandom_u32_max(8) * 2);
+ i = max_t(int, i, get_random_u32_below(8) * 2);
WRITE_ONCE(table_perturb[index], READ_ONCE(table_perturb[index]) + i + 2);
/* Head lock still held and bh's disabled */
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index cd1fa9f70f1a..de6e3515ab4f 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -471,7 +471,7 @@ static u32 ip_idents_reserve(u32 hash, int segs)
old = READ_ONCE(*p_tstamp);
if (old != now && cmpxchg(p_tstamp, old, now) == old)
- delta = prandom_u32_max(now - old);
+ delta = get_random_u32_below(now - old);
/* If UBSAN reports an error there, please make sure your compiler
* supports -fno-strict-overflow before reporting it that was a bug
@@ -689,7 +689,7 @@ static void update_or_create_fnhe(struct fib_nh_common *nhc, __be32 daddr,
} else {
/* Randomize max depth to avoid some side channels attacks. */
int max_depth = FNHE_RECLAIM_DEPTH +
- prandom_u32_max(FNHE_RECLAIM_DEPTH);
+ get_random_u32_below(FNHE_RECLAIM_DEPTH);
while (depth > max_depth) {
fnhe_remove_oldest(hash);
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index 54eec33c6e1c..d2c470524e58 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -618,7 +618,7 @@ static void bbr_reset_probe_bw_mode(struct sock *sk)
struct bbr *bbr = inet_csk_ca(sk);
bbr->mode = BBR_PROBE_BW;
- bbr->cycle_idx = CYCLE_LEN - 1 - prandom_u32_max(bbr_cycle_rand);
+ bbr->cycle_idx = CYCLE_LEN - 1 - get_random_u32_below(bbr_cycle_rand);
bbr_advance_cycle_phase(sk); /* flip to next phase of gain cycle */
}
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 0640453fce54..3b076e5ba932 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3646,7 +3646,8 @@ static void tcp_send_challenge_ack(struct sock *sk)
u32 half = (ack_limit + 1) >> 1;
WRITE_ONCE(net->ipv4.tcp_challenge_timestamp, now);
- WRITE_ONCE(net->ipv4.tcp_challenge_count, half + prandom_u32_max(ack_limit));
+ WRITE_ONCE(net->ipv4.tcp_challenge_count,
+ half + get_random_u32_below(ack_limit));
}
count = READ_ONCE(net->ipv4.tcp_challenge_count);
if (count > 0) {
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 9c3f5202a97b..daf89a2eb492 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -104,7 +104,7 @@ static inline u32 cstamp_delta(unsigned long cstamp)
static inline s32 rfc3315_s14_backoff_init(s32 irt)
{
/* multiply 'initial retransmission time' by 0.9 .. 1.1 */
- u64 tmp = (900000 + prandom_u32_max(200001)) * (u64)irt;
+ u64 tmp = (900000 + get_random_u32_below(200001)) * (u64)irt;
do_div(tmp, 1000000);
return (s32)tmp;
}
@@ -112,11 +112,11 @@ static inline s32 rfc3315_s14_backoff_init(s32 irt)
static inline s32 rfc3315_s14_backoff_update(s32 rt, s32 mrt)
{
/* multiply 'retransmission timeout' by 1.9 .. 2.1 */
- u64 tmp = (1900000 + prandom_u32_max(200001)) * (u64)rt;
+ u64 tmp = (1900000 + get_random_u32_below(200001)) * (u64)rt;
do_div(tmp, 1000000);
if ((s32)tmp > mrt) {
/* multiply 'maximum retransmission time' by 0.9 .. 1.1 */
- tmp = (900000 + prandom_u32_max(200001)) * (u64)mrt;
+ tmp = (900000 + get_random_u32_below(200001)) * (u64)mrt;
do_div(tmp, 1000000);
}
return (s32)tmp;
@@ -3967,7 +3967,7 @@ static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
if (ifp->flags & IFA_F_OPTIMISTIC)
rand_num = 0;
else
- rand_num = prandom_u32_max(idev->cnf.rtr_solicit_delay ?: 1);
+ rand_num = get_random_u32_below(idev->cnf.rtr_solicit_delay ? : 1);
nonce = 0;
if (idev->cnf.enhanced_dad ||
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 7860383295d8..1c02160cf7a4 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1050,7 +1050,7 @@ bool ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
/* called with mc_lock */
static void mld_gq_start_work(struct inet6_dev *idev)
{
- unsigned long tv = prandom_u32_max(idev->mc_maxdelay);
+ unsigned long tv = get_random_u32_below(idev->mc_maxdelay);
idev->mc_gq_running = 1;
if (!mod_delayed_work(mld_wq, &idev->mc_gq_work, tv + 2))
@@ -1068,7 +1068,7 @@ static void mld_gq_stop_work(struct inet6_dev *idev)
/* called with mc_lock */
static void mld_ifc_start_work(struct inet6_dev *idev, unsigned long delay)
{
- unsigned long tv = prandom_u32_max(delay);
+ unsigned long tv = get_random_u32_below(delay);
if (!mod_delayed_work(mld_wq, &idev->mc_ifc_work, tv + 2))
in6_dev_hold(idev);
@@ -1085,7 +1085,7 @@ static void mld_ifc_stop_work(struct inet6_dev *idev)
/* called with mc_lock */
static void mld_dad_start_work(struct inet6_dev *idev, unsigned long delay)
{
- unsigned long tv = prandom_u32_max(delay);
+ unsigned long tv = get_random_u32_below(delay);
if (!mod_delayed_work(mld_wq, &idev->mc_dad_work, tv + 2))
in6_dev_hold(idev);
@@ -1130,7 +1130,7 @@ static void igmp6_group_queried(struct ifmcaddr6 *ma, unsigned long resptime)
}
if (delay >= resptime)
- delay = prandom_u32_max(resptime);
+ delay = get_random_u32_below(resptime);
if (!mod_delayed_work(mld_wq, &ma->mca_work, delay))
refcount_inc(&ma->mca_refcnt);
@@ -2574,7 +2574,7 @@ static void igmp6_join_group(struct ifmcaddr6 *ma)
igmp6_send(&ma->mca_addr, ma->idev->dev, ICMPV6_MGM_REPORT);
- delay = prandom_u32_max(unsolicited_report_interval(ma->idev));
+ delay = get_random_u32_below(unsolicited_report_interval(ma->idev));
if (cancel_delayed_work(&ma->mca_work)) {
refcount_dec(&ma->mca_refcnt);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 2f355f0ec32a..e74e0361fd92 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1713,7 +1713,7 @@ static int rt6_insert_exception(struct rt6_info *nrt,
net->ipv6.rt6_stats->fib_rt_cache++;
/* Randomize max depth to avoid some side channels attacks. */
- max_depth = FIB6_MAX_DEPTH + prandom_u32_max(FIB6_MAX_DEPTH);
+ max_depth = FIB6_MAX_DEPTH + get_random_u32_below(FIB6_MAX_DEPTH);
while (bucket->depth > max_depth)
rt6_exception_remove_oldest(bucket);
diff --git a/net/netfilter/ipvs/ip_vs_twos.c b/net/netfilter/ipvs/ip_vs_twos.c
index f2579fc9c75b..3308e4cc740a 100644
--- a/net/netfilter/ipvs/ip_vs_twos.c
+++ b/net/netfilter/ipvs/ip_vs_twos.c
@@ -71,8 +71,8 @@ static struct ip_vs_dest *ip_vs_twos_schedule(struct ip_vs_service *svc,
* from 0 to total_weight
*/
total_weight += 1;
- rweight1 = prandom_u32_max(total_weight);
- rweight2 = prandom_u32_max(total_weight);
+ rweight1 = get_random_u32_below(total_weight);
+ rweight2 = get_random_u32_below(total_weight);
/* Pick two weighted servers */
list_for_each_entry_rcu(dest, &svc->destinations, n_list) {
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f97bda06d2a9..8703812405eb 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -906,7 +906,7 @@ nf_conntrack_hash_check_insert(struct nf_conn *ct)
nf_ct_zone_id(nf_ct_zone(ct), IP_CT_DIR_REPLY));
} while (nf_conntrack_double_lock(net, hash, reply_hash, sequence));
- max_chainlen = MIN_CHAINLEN + prandom_u32_max(MAX_CHAINLEN);
+ max_chainlen = MIN_CHAINLEN + get_random_u32_below(MAX_CHAINLEN);
/* See if there's one in the list already, including reverse */
hlist_nulls_for_each_entry(h, n, &nf_conntrack_hash[hash], hnnode) {
@@ -1227,7 +1227,7 @@ __nf_conntrack_confirm(struct sk_buff *skb)
goto dying;
}
- max_chainlen = MIN_CHAINLEN + prandom_u32_max(MAX_CHAINLEN);
+ max_chainlen = MIN_CHAINLEN + get_random_u32_below(MAX_CHAINLEN);
/* See if there's one in the list already, including reverse:
NAT could have grabbed it without realizing, since we're
not in the hash. If there is, we lost race. */
diff --git a/net/netfilter/nf_nat_helper.c b/net/netfilter/nf_nat_helper.c
index a95a25196943..bf591e6af005 100644
--- a/net/netfilter/nf_nat_helper.c
+++ b/net/netfilter/nf_nat_helper.c
@@ -223,7 +223,7 @@ u16 nf_nat_exp_find_port(struct nf_conntrack_expect *exp, u16 port)
if (res != -EBUSY || (--attempts_left < 0))
break;
- port = min + prandom_u32_max(range);
+ port = min + get_random_u32_below(range);
}
return 0;
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index a662e8a5ff84..7a401d94463a 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -835,7 +835,7 @@ retry:
/* Bind collision, search negative portid values. */
if (rover == -4096)
/* rover will be in range [S32_MIN, -4097] */
- rover = S32_MIN + prandom_u32_max(-4096 - S32_MIN);
+ rover = S32_MIN + get_random_u32_below(-4096 - S32_MIN);
else if (rover >= -4096)
rover = -4097;
portid = rover--;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 6ce8dd19f33c..51a47ade92e8 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1350,7 +1350,7 @@ static bool fanout_flow_is_huge(struct packet_sock *po, struct sk_buff *skb)
if (READ_ONCE(history[i]) == rxhash)
count++;
- victim = prandom_u32_max(ROLLOVER_HLEN);
+ victim = get_random_u32_below(ROLLOVER_HLEN);
/* Avoid dirtying the cache line if possible */
if (READ_ONCE(history[victim]) != rxhash)
@@ -1386,7 +1386,7 @@ static unsigned int fanout_demux_rnd(struct packet_fanout *f,
struct sk_buff *skb,
unsigned int num)
{
- return prandom_u32_max(num);
+ return get_random_u32_below(num);
}
static unsigned int fanout_demux_rollover(struct packet_fanout *f,
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index 62d682b96b88..be267ffaaba7 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -25,7 +25,7 @@ static struct tc_action_ops act_gact_ops;
static int gact_net_rand(struct tcf_gact *gact)
{
smp_rmb(); /* coupled with smp_wmb() in tcf_gact_init() */
- if (prandom_u32_max(gact->tcfg_pval))
+ if (get_random_u32_below(gact->tcfg_pval))
return gact->tcf_action;
return gact->tcfg_paction;
}
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 7a25477f5d99..4194480746b0 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -168,7 +168,7 @@ static int tcf_sample_act(struct sk_buff *skb, const struct tc_action *a,
psample_group = rcu_dereference_bh(s->psample_group);
/* randomly sample packets according to rate */
- if (psample_group && (prandom_u32_max(s->rate) == 0)) {
+ if (psample_group && (get_random_u32_below(s->rate) == 0)) {
if (!skb_at_tc_ingress(skb)) {
md.in_ifindex = skb->skb_iif;
md.out_ifindex = skb->dev->ifindex;
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index 3ac3e5c80b6f..19c851125901 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -183,7 +183,7 @@ static struct sk_buff *choke_peek_random(const struct choke_sched_data *q,
int retrys = 3;
do {
- *pidx = (q->head + prandom_u32_max(choke_len(q))) & q->tab_mask;
+ *pidx = (q->head + get_random_u32_below(choke_len(q))) & q->tab_mask;
skb = q->tab[*pidx];
if (skb)
return skb;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index fb00ac40ecb7..6ef3021e1169 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -513,8 +513,8 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch,
goto finish_segs;
}
- skb->data[prandom_u32_max(skb_headlen(skb))] ^=
- 1<<prandom_u32_max(8);
+ skb->data[get_random_u32_below(skb_headlen(skb))] ^=
+ 1<<get_random_u32_below(8);
}
if (unlikely(sch->q.qlen >= sch->limit)) {
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 83628c347744..cfe72085fdc4 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -8319,7 +8319,7 @@ static int sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32_max(remaining) + low;
+ rover = get_random_u32_below(remaining) + low;
do {
rover++;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index f8fd98784977..ca1eba95c293 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -199,7 +199,7 @@ void sctp_transport_reset_hb_timer(struct sctp_transport *transport)
if ((time_before(transport->hb_timer.expires, expires) ||
!timer_pending(&transport->hb_timer)) &&
!mod_timer(&transport->hb_timer,
- expires + prandom_u32_max(transport->rto)))
+ expires + get_random_u32_below(transport->rto)))
sctp_transport_hold(transport);
}
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index f075a9fb5ccc..95ff74706104 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -677,7 +677,7 @@ static void cache_limit_defers(void)
/* Consider removing either the first or the last */
if (cache_defer_cnt > DFR_MAX) {
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
discard = list_entry(cache_defer_list.next,
struct cache_deferred_req, recent);
else
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 915b9902f673..2e4987dcba29 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1619,7 +1619,7 @@ static int xs_get_random_port(void)
if (max < min)
return -EADDRINUSE;
range = max - min + 1;
- rand = prandom_u32_max(range);
+ rand = get_random_u32_below(range);
return rand + min;
}
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index e902b01ea3cb..b35c8701876a 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -3010,7 +3010,7 @@ static int tipc_sk_insert(struct tipc_sock *tsk)
struct net *net = sock_net(sk);
struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 remaining = (TIPC_MAX_PORT - TIPC_MIN_PORT) + 1;
- u32 portid = prandom_u32_max(remaining) + TIPC_MIN_PORT;
+ u32 portid = get_random_u32_below(remaining) + TIPC_MIN_PORT;
while (remaining--) {
portid++;
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 884eca7f6743..ff38c5a4d174 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -627,7 +627,7 @@ static int __vsock_bind_connectible(struct vsock_sock *vsk,
if (!port)
port = LAST_RESERVED_PORT + 1 +
- prandom_u32_max(U32_MAX - LAST_RESERVED_PORT);
+ get_random_u32_below(U32_MAX - LAST_RESERVED_PORT);
vsock_addr_init(&new_addr, addr->svm_cid, addr->svm_port);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 3d2fe7712ac5..40f831854774 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2072,7 +2072,7 @@ int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high)
} else {
u32 spi = 0;
for (h = 0; h < high-low+1; h++) {
- spi = low + prandom_u32_max(high - low + 1);
+ spi = low + get_random_u32_below(high - low + 1);
x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family);
if (x0 == NULL) {
newspi = htonl(spi);
--
LinuxNextTracking
1
0
[linux-next] LinuxNextTracking branch, master, updated. next-20221109
by batmanï¼ open-mesh.org 09 Nov '22
by batmanï¼ open-mesh.org 09 Nov '22
09 Nov '22
The following commit has been merged in the master branch:
commit 2ced9eabc6f0620c8ae67f1dbc95f7f041e67972
Merge: 75731107467982aa7a58e5d835ec2bf9c76cc870 6cd0a8ecc0f4bb027e35063c0a4ec491c061bd27
Author: Stephen Rothwell <sfr(a)canb.auug.org.au>
Date: Wed Nov 9 14:29:11 2022 +1100
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git
diff --combined Documentation/admin-guide/kernel-parameters.txt
index 4f14ae738540,78493797460f..10c7928f9e8c
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@@ -703,17 -703,6 +703,17 @@@
condev= [HW,S390] console device
conmode=
+ con3215_drop= [S390] 3215 console drop mode.
+ Format: y|n|Y|N|1|0
+ When set to true, drop data on the 3215 console when
+ the console buffer is full. In this case the
+ operator using a 3270 terminal emulator (for example
+ x3270) does not have to enter the clear key for the
+ console output to advance and the kernel to continue.
+ This leads to a much faster boot time when a 3270
+ terminal emulator is active. If no 3270 terminal
+ emulator is used, this parameter has no effect.
+
console= [KNL] Output console device and options.
tty<n> Use the virtual console device <n>.
@@@ -4577,17 -4566,15 +4577,15 @@@
ramdisk_start= [RAM] RAM disk image start address
- random.trust_cpu={on,off}
- [KNL] Enable or disable trusting the use of the
- CPU's random number generator (if available) to
- fully seed the kernel's CRNG. Default is controlled
- by CONFIG_RANDOM_TRUST_CPU.
-
- random.trust_bootloader={on,off}
- [KNL] Enable or disable trusting the use of a
- seed passed by the bootloader (if available) to
- fully seed the kernel's CRNG. Default is controlled
- by CONFIG_RANDOM_TRUST_BOOTLOADER.
+ random.trust_cpu=off
+ [KNL] Disable trusting the use of the CPU's
+ random number generator (if available) to
+ initialize the kernel's RNG.
+
+ random.trust_bootloader=off
+ [KNL] Disable trusting the use of the a seed
+ passed by the bootloader (if available) to
+ initialize the kernel's RNG.
randomize_kstack_offset=
[KNL] Enable or disable kernel stack offset
@@@ -5093,11 -5080,6 +5091,11 @@@
rcupdate.rcu_cpu_stall_timeout to be used (after
conversion from seconds to milliseconds).
+ rcupdate.rcu_cpu_stall_cputime= [KNL]
+ Provide statistics on the cputime and count of
+ interrupts and tasks during the second half of
+ rcu stall timeout.
+
rcupdate.rcu_expedited= [KNL]
Use expedited grace-period primitives, for
example, synchronize_rcu_expedited() instead
diff --combined arch/s390/configs/debug_defconfig
index 63807bd0b536,2bb3469092f0..a7b4e1d82758
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@@ -573,8 -573,6 +573,6 @@@ CONFIG_VIRTIO_CONSOLE=
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_HANGCHECK_TIMER=m
CONFIG_TN3270_FS=y
- # CONFIG_RANDOM_TRUST_CPU is not set
- # CONFIG_RANDOM_TRUST_BOOTLOADER is not set
CONFIG_PPS=m
# CONFIG_PTP_1588_CLOCK is not set
# CONFIG_HWMON is not set
@@@ -723,42 -721,52 +721,42 @@@ CONFIG_CRYPTO_ECDSA=
CONFIG_CRYPTO_ECRDSA=m
CONFIG_CRYPTO_SM2=m
CONFIG_CRYPTO_CURVE25519=m
-CONFIG_CRYPTO_GCM=y
-CONFIG_CRYPTO_CHACHA20POLY1305=m
-CONFIG_CRYPTO_AEGIS128=m
-CONFIG_CRYPTO_SEQIV=y
-CONFIG_CRYPTO_CFB=m
-CONFIG_CRYPTO_LRW=m
-CONFIG_CRYPTO_PCBC=m
-CONFIG_CRYPTO_KEYWRAP=m
-CONFIG_CRYPTO_ADIANTUM=m
-CONFIG_CRYPTO_HCTR2=m
-CONFIG_CRYPTO_XCBC=m
-CONFIG_CRYPTO_VMAC=m
-CONFIG_CRYPTO_CRC32=m
-CONFIG_CRYPTO_CRC32_S390=y
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_SHA512_S390=m
-CONFIG_CRYPTO_SHA1_S390=m
-CONFIG_CRYPTO_SHA256_S390=m
-CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SHA3_256_S390=m
-CONFIG_CRYPTO_SHA3_512_S390=m
-CONFIG_CRYPTO_SM3_GENERIC=m
-CONFIG_CRYPTO_WP512=m
-CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_AES_TI=m
-CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_ANUBIS=m
-CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
-CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_CRYPTO_SEED=m
-CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SM4_GENERIC=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_ADIANTUM=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_CFB=m
+CONFIG_CRYPTO_HCTR2=m
+CONFIG_CRYPTO_KEYWRAP=m
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_AEGIS128=m
+CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_GCM=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3_GENERIC=m
+CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_842=m
CONFIG_CRYPTO_LZ4=m
CONFIG_CRYPTO_LZ4HC=m
@@@ -769,16 -777,6 +767,16 @@@ CONFIG_CRYPTO_USER_API_SKCIPHER=
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
CONFIG_CRYPTO_STATS=y
+CONFIG_CRYPTO_CRC32_S390=y
+CONFIG_CRYPTO_SHA512_S390=m
+CONFIG_CRYPTO_SHA1_S390=m
+CONFIG_CRYPTO_SHA256_S390=m
+CONFIG_CRYPTO_SHA3_256_S390=m
+CONFIG_CRYPTO_SHA3_512_S390=m
+CONFIG_CRYPTO_GHASH_S390=m
+CONFIG_CRYPTO_AES_S390=m
+CONFIG_CRYPTO_DES_S390=m
+CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_ZCRYPT=m
CONFIG_PKEY=m
CONFIG_CRYPTO_PAES_S390=m
@@@ -797,6 -795,7 +795,6 @@@ CONFIG_CMA_SIZE_MBYTES=
CONFIG_PRINTK_TIME=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO_DWARF4=y
-CONFIG_DEBUG_INFO_BTF=y
CONFIG_GDB_SCRIPTS=y
CONFIG_HEADERS_INSTALL=y
CONFIG_DEBUG_SECTION_MISMATCH=y
diff --combined arch/s390/configs/defconfig
index 4f9a98247442,366bf3fd0208..2bc2d0fe5774
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@@ -563,8 -563,6 +563,6 @@@ CONFIG_VIRTIO_CONSOLE=
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_HANGCHECK_TIMER=m
CONFIG_TN3270_FS=y
- # CONFIG_RANDOM_TRUST_CPU is not set
- # CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# CONFIG_PTP_1588_CLOCK is not set
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
@@@ -707,43 -705,53 +705,43 @@@ CONFIG_CRYPTO_ECDSA=
CONFIG_CRYPTO_ECRDSA=m
CONFIG_CRYPTO_SM2=m
CONFIG_CRYPTO_CURVE25519=m
-CONFIG_CRYPTO_GCM=y
-CONFIG_CRYPTO_CHACHA20POLY1305=m
-CONFIG_CRYPTO_AEGIS128=m
-CONFIG_CRYPTO_SEQIV=y
-CONFIG_CRYPTO_CFB=m
-CONFIG_CRYPTO_LRW=m
-CONFIG_CRYPTO_OFB=m
-CONFIG_CRYPTO_PCBC=m
-CONFIG_CRYPTO_KEYWRAP=m
-CONFIG_CRYPTO_ADIANTUM=m
-CONFIG_CRYPTO_HCTR2=m
-CONFIG_CRYPTO_XCBC=m
-CONFIG_CRYPTO_VMAC=m
-CONFIG_CRYPTO_CRC32=m
-CONFIG_CRYPTO_CRC32_S390=y
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_SHA512_S390=m
-CONFIG_CRYPTO_SHA1_S390=m
-CONFIG_CRYPTO_SHA256_S390=m
-CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SHA3_256_S390=m
-CONFIG_CRYPTO_SHA3_512_S390=m
-CONFIG_CRYPTO_SM3_GENERIC=m
-CONFIG_CRYPTO_WP512=m
-CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_AES_TI=m
-CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_ANUBIS=m
-CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
-CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_CRYPTO_SEED=m
-CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SM4_GENERIC=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_ADIANTUM=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_CFB=m
+CONFIG_CRYPTO_HCTR2=m
+CONFIG_CRYPTO_KEYWRAP=m
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_OFB=m
+CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_AEGIS128=m
+CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_GCM=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3_GENERIC=m
+CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_842=m
CONFIG_CRYPTO_LZ4=m
CONFIG_CRYPTO_LZ4HC=m
@@@ -754,16 -762,6 +752,16 @@@ CONFIG_CRYPTO_USER_API_SKCIPHER=
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
CONFIG_CRYPTO_STATS=y
+CONFIG_CRYPTO_CRC32_S390=y
+CONFIG_CRYPTO_SHA512_S390=m
+CONFIG_CRYPTO_SHA1_S390=m
+CONFIG_CRYPTO_SHA256_S390=m
+CONFIG_CRYPTO_SHA3_256_S390=m
+CONFIG_CRYPTO_SHA3_512_S390=m
+CONFIG_CRYPTO_GHASH_S390=m
+CONFIG_CRYPTO_AES_S390=m
+CONFIG_CRYPTO_DES_S390=m
+CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_ZCRYPT=m
CONFIG_PKEY=m
CONFIG_CRYPTO_PAES_S390=m
@@@ -781,6 -779,7 +779,6 @@@ CONFIG_CMA_SIZE_MBYTES=
CONFIG_PRINTK_TIME=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO_DWARF4=y
-CONFIG_DEBUG_INFO_BTF=y
CONFIG_GDB_SCRIPTS=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_MAGIC_SYSRQ=y
diff --combined arch/s390/configs/zfcpdump_defconfig
index 5fe9948be644,9a6269c2374c..ae14ab0b864d
--- a/arch/s390/configs/zfcpdump_defconfig
+++ b/arch/s390/configs/zfcpdump_defconfig
@@@ -58,7 -58,6 +58,6 @@@ CONFIG_ZFCP=
# CONFIG_VMCP is not set
# CONFIG_MONWRITER is not set
# CONFIG_S390_VMUR is not set
- # CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# CONFIG_HID is not set
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VHOST_MENU is not set
@@@ -74,6 -73,7 +73,6 @@@ CONFIG_PRINTK_TIME=
# CONFIG_SYMBOLIC_ERRNAME is not set
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_INFO_DWARF4=y
-CONFIG_DEBUG_INFO_BTF=y
CONFIG_DEBUG_FS=y
CONFIG_PANIC_ON_OOPS=y
# CONFIG_SCHED_DEBUG is not set
diff --combined arch/x86/kernel/cpu/common.c
index 423a760fa9de,3f66dd03c091..cd129481fa3c
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@@ -22,9 -22,9 +22,9 @@@
#include <linux/io.h>
#include <linux/syscore_ops.h>
#include <linux/pgtable.h>
+ #include <linux/stackprotector.h>
#include <asm/cmdline.h>
- #include <asm/stackprotector.h>
#include <asm/perf_event.h>
#include <asm/mmu_context.h>
#include <asm/doublefault.h>
@@@ -609,7 -609,6 +609,7 @@@ static __always_inline void setup_cet(s
if (!ibt_selftest()) {
pr_err("IBT selftest: Failed!\n");
+ wrmsrl(MSR_IA32_S_CET, 0);
setup_clear_cpu_cap(X86_FEATURE_IBT);
return;
}
@@@ -702,6 -701,16 +702,6 @@@ static const char *table_lookup_model(s
__u32 cpu_caps_cleared[NCAPINTS + NBUGINTS] __aligned(sizeof(unsigned long));
__u32 cpu_caps_set[NCAPINTS + NBUGINTS] __aligned(sizeof(unsigned long));
-void load_percpu_segment(int cpu)
-{
-#ifdef CONFIG_X86_32
- loadsegment(fs, __KERNEL_PERCPU);
-#else
- __loadsegment_simple(gs, 0);
- wrmsrl(MSR_GS_BASE, cpu_kernelmode_gs_base(cpu));
-#endif
-}
-
#ifdef CONFIG_X86_32
/* The 32-bit entry code needs to find cpu_entry_area. */
DEFINE_PER_CPU(struct cpu_entry_area *, cpu_entry_area);
@@@ -729,45 -738,16 +729,45 @@@ void load_fixmap_gdt(int cpu
}
EXPORT_SYMBOL_GPL(load_fixmap_gdt);
-/*
- * Current gdt points %fs at the "master" per-cpu area: after this,
- * it's on the real one.
+/**
+ * switch_gdt_and_percpu_base - Switch to direct GDT and runtime per CPU base
+ * @cpu: The CPU number for which this is invoked
+ *
+ * Invoked during early boot to switch from early GDT and early per CPU to
+ * the direct GDT and the runtime per CPU area. On 32-bit the percpu base
+ * switch is implicit by loading the direct GDT. On 64bit this requires
+ * to update GSBASE.
*/
-void switch_to_new_gdt(int cpu)
+void __init switch_gdt_and_percpu_base(int cpu)
{
- /* Load the original GDT */
load_direct_gdt(cpu);
- /* Reload the per-cpu base */
- load_percpu_segment(cpu);
+
+#ifdef CONFIG_X86_64
+ /*
+ * No need to load %gs. It is already correct.
+ *
+ * Writing %gs on 64bit would zero GSBASE which would make any per
+ * CPU operation up to the point of the wrmsrl() fault.
+ *
+ * Set GSBASE to the new offset. Until the wrmsrl() happens the
+ * early mapping is still valid. That means the GSBASE update will
+ * lose any prior per CPU data which was not copied over in
+ * setup_per_cpu_areas().
+ *
+ * This works even with stackprotector enabled because the
+ * per CPU stack canary is 0 in both per CPU areas.
+ */
+ wrmsrl(MSR_GS_BASE, cpu_kernelmode_gs_base(cpu));
+#else
+ /*
+ * %fs is already set to __KERNEL_PERCPU, but after switching GDT
+ * it is required to load FS again so that the 'hidden' part is
+ * updated from the new GDT. Up to this point the early per CPU
+ * translation is active. Any content of the early per CPU data
+ * which was not copied over in setup_per_cpu_areas() is lost.
+ */
+ loadsegment(fs, __KERNEL_PERCPU);
+#endif
}
static const struct cpu_dev *cpu_devs[X86_VENDOR_NUM] = {};
@@@ -2013,18 -1993,27 +2013,18 @@@ static __init int setup_clearcpuid(cha
}
__setup("clearcpuid=", setup_clearcpuid);
+DEFINE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot) = {
+ .current_task = &init_task,
+ .preempt_count = INIT_PREEMPT_COUNT,
+ .top_of_stack = TOP_OF_INIT_STACK,
+};
+EXPORT_PER_CPU_SYMBOL(pcpu_hot);
+
#ifdef CONFIG_X86_64
DEFINE_PER_CPU_FIRST(struct fixed_percpu_data,
fixed_percpu_data) __aligned(PAGE_SIZE) __visible;
EXPORT_PER_CPU_SYMBOL_GPL(fixed_percpu_data);
-/*
- * The following percpu variables are hot. Align current_task to
- * cacheline size such that they fall in the same cacheline.
- */
-DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned =
- &init_task;
-EXPORT_PER_CPU_SYMBOL(current_task);
-
-DEFINE_PER_CPU(void *, hardirq_stack_ptr);
-DEFINE_PER_CPU(bool, hardirq_stack_inuse);
-
-DEFINE_PER_CPU(int, __preempt_count) = INIT_PREEMPT_COUNT;
-EXPORT_PER_CPU_SYMBOL(__preempt_count);
-
-DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) = TOP_OF_INIT_STACK;
-
static void wrmsrl_cstar(unsigned long val)
{
/*
@@@ -2075,6 -2064,20 +2075,6 @@@ void syscall_init(void
#else /* CONFIG_X86_64 */
-DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
-EXPORT_PER_CPU_SYMBOL(current_task);
-DEFINE_PER_CPU(int, __preempt_count) = INIT_PREEMPT_COUNT;
-EXPORT_PER_CPU_SYMBOL(__preempt_count);
-
-/*
- * On x86_32, vm86 modifies tss.sp0, so sp0 isn't a reliable way to find
- * the top of the kernel stack. Use an extra percpu variable to track the
- * top of the kernel stack directly.
- */
-DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) =
- (unsigned long)&init_thread_union + THREAD_SIZE;
-EXPORT_PER_CPU_SYMBOL(cpu_current_top_of_stack);
-
#ifdef CONFIG_STACKPROTECTOR
DEFINE_PER_CPU(unsigned long, __stack_chk_guard);
EXPORT_PER_CPU_SYMBOL(__stack_chk_guard);
@@@ -2245,6 -2248,12 +2245,6 @@@ void cpu_init(void
boot_cpu_has(X86_FEATURE_TSC) || boot_cpu_has(X86_FEATURE_DE))
cr4_clear_bits(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
- /*
- * Initialize the per-CPU GDT with the boot GDT,
- * and set up the GDT descriptor:
- */
- switch_to_new_gdt(cpu);
-
if (IS_ENABLED(CONFIG_X86_64)) {
loadsegment(fs, 0);
memset(cur->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8);
diff --combined arch/x86/kernel/module.c
index 0142982e94c5,9f74b7d71a50..a3f8cdb80feb
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@@ -53,7 -53,7 +53,7 @@@ static unsigned long int get_module_loa
*/
if (module_load_offset == 0)
module_load_offset =
- (prandom_u32_max(1024) + 1) * PAGE_SIZE;
+ get_random_u32_between(1, 1024 + 1) * PAGE_SIZE;
mutex_unlock(&module_kaslr_mutex);
}
return module_load_offset;
@@@ -74,11 -74,10 +74,11 @@@ void *module_alloc(unsigned long size
return NULL;
p = __vmalloc_node_range(size, MODULE_ALIGN,
- MODULES_VADDR + get_module_load_offset(),
- MODULES_END, gfp_mask,
- PAGE_KERNEL, VM_DEFER_KMEMLEAK, NUMA_NO_NODE,
- __builtin_return_address(0));
+ MODULES_VADDR + get_module_load_offset(),
+ MODULES_END, gfp_mask, PAGE_KERNEL,
+ VM_FLUSH_RESET_PERMS | VM_DEFER_KMEMLEAK,
+ NUMA_NO_NODE, __builtin_return_address(0));
+
if (p && (kasan_alloc_module_shadow(p, size, gfp_mask) < 0)) {
vfree(p);
return NULL;
@@@ -254,8 -253,7 +254,8 @@@ int module_finalize(const Elf_Ehdr *hdr
{
const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL,
*para = NULL, *orc = NULL, *orc_ip = NULL,
- *retpolines = NULL, *returns = NULL, *ibt_endbr = NULL;
+ *retpolines = NULL, *returns = NULL, *ibt_endbr = NULL,
+ *calls = NULL, *cfi = NULL;
char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
@@@ -275,10 -273,6 +275,10 @@@
retpolines = s;
if (!strcmp(".return_sites", secstrings + s->sh_name))
returns = s;
+ if (!strcmp(".call_sites", secstrings + s->sh_name))
+ calls = s;
+ if (!strcmp(".cfi_sites", secstrings + s->sh_name))
+ cfi = s;
if (!strcmp(".ibt_endbr_seal", secstrings + s->sh_name))
ibt_endbr = s;
}
@@@ -291,22 -285,6 +291,22 @@@
void *pseg = (void *)para->sh_addr;
apply_paravirt(pseg, pseg + para->sh_size);
}
+ if (retpolines || cfi) {
+ void *rseg = NULL, *cseg = NULL;
+ unsigned int rsize = 0, csize = 0;
+
+ if (retpolines) {
+ rseg = (void *)retpolines->sh_addr;
+ rsize = retpolines->sh_size;
+ }
+
+ if (cfi) {
+ cseg = (void *)cfi->sh_addr;
+ csize = cfi->sh_size;
+ }
+
+ apply_fineibt(rseg, rseg + rsize, cseg, cseg + csize);
+ }
if (retpolines) {
void *rseg = (void *)retpolines->sh_addr;
apply_retpolines(rseg, rseg + retpolines->sh_size);
@@@ -320,21 -298,6 +320,21 @@@
void *aseg = (void *)alt->sh_addr;
apply_alternatives(aseg, aseg + alt->sh_size);
}
+ if (calls || para) {
+ struct callthunk_sites cs = {};
+
+ if (calls) {
+ cs.call_start = (void *)calls->sh_addr;
+ cs.call_end = (void *)calls->sh_addr + calls->sh_size;
+ }
+
+ if (para) {
+ cs.pv_start = (void *)para->sh_addr;
+ cs.pv_end = (void *)para->sh_addr + para->sh_size;
+ }
+
+ callthunks_patch_module_calls(&cs, me);
+ }
if (ibt_endbr) {
void *iseg = (void *)ibt_endbr->sh_addr;
apply_ibt_endbr(iseg, iseg + ibt_endbr->sh_size);
diff --combined arch/x86/kernel/setup_percpu.c
index c2fc4c41c164,b26123c90b4f..c242dc47e9cb
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@@ -11,6 -11,7 +11,7 @@@
#include <linux/smp.h>
#include <linux/topology.h>
#include <linux/pfn.h>
+ #include <linux/stackprotector.h>
#include <asm/sections.h>
#include <asm/processor.h>
#include <asm/desc.h>
@@@ -21,8 -22,10 +22,7 @@@
#include <asm/proto.h>
#include <asm/cpumask.h>
#include <asm/cpu.h>
- #include <asm/stackprotector.h>
-DEFINE_PER_CPU_READ_MOSTLY(int, cpu_number);
-EXPORT_PER_CPU_SYMBOL(cpu_number);
-
#ifdef CONFIG_X86_64
#define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load)
#else
@@@ -169,7 -172,7 +169,7 @@@ void __init setup_per_cpu_areas(void
for_each_possible_cpu(cpu) {
per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu];
per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu);
- per_cpu(cpu_number, cpu) = cpu;
+ per_cpu(pcpu_hot.cpu_number, cpu) = cpu;
setup_percpu_segment(cpu);
/*
* Copy data used in early init routines from the
@@@ -208,7 -211,7 +208,7 @@@
* area. Reload any changed state for the boot CPU.
*/
if (!cpu)
- switch_to_new_gdt(cpu);
+ switch_gdt_and_percpu_base(cpu);
}
/* indicate the early static arrays will soon be gone */
diff --combined arch/x86/kernel/smpboot.c
index 87863a93e918,5a742b6ec46d..ed496d387517
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@@ -56,6 -56,7 +56,7 @@@
#include <linux/numa.h>
#include <linux/pgtable.h>
#include <linux/overflow.h>
+ #include <linux/stackprotector.h>
#include <asm/acpi.h>
#include <asm/desc.h>
@@@ -1046,7 -1047,7 +1047,7 @@@ int common_cpu_up(unsigned int cpu, str
/* Just in case we booted with a single CPU. */
alternatives_enable_smp();
- per_cpu(current_task, cpu) = idle;
+ per_cpu(pcpu_hot.current_task, cpu) = idle;
cpu_init_stack_canary(cpu, idle);
/* Initialize the interrupt stack(s) */
@@@ -1056,7 -1057,7 +1057,7 @@@
#ifdef CONFIG_X86_32
/* Stack for startup_32 can be just as for start_secondary onwards */
- per_cpu(cpu_current_top_of_stack, cpu) = task_top_of_stack(idle);
+ per_cpu(pcpu_hot.top_of_stack, cpu) = task_top_of_stack(idle);
#else
initial_gs = per_cpu_offset(cpu);
#endif
@@@ -1453,11 -1454,7 +1454,11 @@@ void arch_thaw_secondary_cpus_end(void
void __init native_smp_prepare_boot_cpu(void)
{
int me = smp_processor_id();
- switch_to_new_gdt(me);
+
+ /* SMP handles this from setup_per_cpu_areas() */
+ if (!IS_ENABLED(CONFIG_SMP))
+ switch_gdt_and_percpu_base(me);
+
/* already set me in cpu_online_mask in boot_cpu_init() */
cpumask_set_cpu(me, cpu_callout_mask);
cpu_set_state_online(me);
diff --combined arch/x86/xen/enlighten_pv.c
index 9b892079581b,745420853a7c..05170fc19083
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@@ -32,6 -32,7 +32,7 @@@
#include <linux/edd.h>
#include <linux/reboot.h>
#include <linux/virtio_anchor.h>
+ #include <linux/stackprotector.h>
#include <xen/xen.h>
#include <xen/events.h>
@@@ -64,7 -65,6 +65,6 @@@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/reboot.h>
- #include <asm/stackprotector.h>
#include <asm/hypervisor.h>
#include <asm/mach_traps.h>
#include <asm/mwait.h>
@@@ -1209,7 -1209,7 +1209,7 @@@ static void __init xen_setup_gdt(int cp
pv_ops.cpu.write_gdt_entry = xen_write_gdt_entry_boot;
pv_ops.cpu.load_gdt = xen_load_gdt_boot;
- switch_to_new_gdt(cpu);
+ switch_gdt_and_percpu_base(cpu);
pv_ops.cpu.write_gdt_entry = xen_write_gdt_entry;
pv_ops.cpu.load_gdt = xen_load_gdt;
diff --combined crypto/testmgr.c
index e2806ef044fd,b09b9408ec44..19639fb08c25
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@@ -855,9 -855,9 +855,9 @@@ static int prepare_keybuf(const u8 *key
/* Generate a random length in range [0, max_len], but prefer smaller values */
static unsigned int generate_random_length(unsigned int max_len)
{
- unsigned int len = prandom_u32_max(max_len + 1);
+ unsigned int len = get_random_u32_below(max_len + 1);
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
return len % 64;
case 1:
@@@ -874,14 -874,14 +874,14 @@@ static void flip_random_bit(u8 *buf, si
{
size_t bitpos;
- bitpos = prandom_u32_max(size * 8);
+ bitpos = get_random_u32_below(size * 8);
buf[bitpos / 8] ^= 1 << (bitpos % 8);
}
/* Flip a random byte in the given nonempty data buffer */
static void flip_random_byte(u8 *buf, size_t size)
{
- buf[prandom_u32_max(size)] ^= 0xff;
+ buf[get_random_u32_below(size)] ^= 0xff;
}
/* Sometimes make some random changes to the given nonempty data buffer */
@@@ -891,15 -891,15 +891,15 @@@ static void mutate_buffer(u8 *buf, size
size_t i;
/* Sometimes flip some bits */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size * 8);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size * 8);
for (i = 0; i < num_flips; i++)
flip_random_bit(buf, size);
}
/* Sometimes flip some bytes */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size);
for (i = 0; i < num_flips; i++)
flip_random_byte(buf, size);
}
@@@ -915,11 -915,11 +915,11 @@@ static void generate_random_bytes(u8 *b
if (count == 0)
return;
- switch (prandom_u32_max(8)) { /* Choose a generation strategy */
+ switch (get_random_u32_below(8)) { /* Choose a generation strategy */
case 0:
case 1:
/* All the same byte, plus optional mutations */
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
b = 0x00;
break;
@@@ -959,24 -959,24 +959,24 @@@ static char *generate_random_sgl_divisi
unsigned int this_len;
const char *flushtype_str;
- if (div == &divs[max_divs - 1] || prandom_u32_max(2) == 0)
+ if (div == &divs[max_divs - 1] || get_random_u32_below(2) == 0)
this_len = remaining;
else
- this_len = 1 + prandom_u32_max(remaining);
+ this_len = get_random_u32_between(1, remaining + 1);
div->proportion_of_total = this_len;
- if (prandom_u32_max(4) == 0)
- div->offset = (PAGE_SIZE - 128) + prandom_u32_max(128);
- else if (prandom_u32_max(2) == 0)
- div->offset = prandom_u32_max(32);
+ if (get_random_u32_below(4) == 0)
+ div->offset = get_random_u32_between(PAGE_SIZE - 128, PAGE_SIZE);
+ else if (get_random_u32_below(2) == 0)
+ div->offset = get_random_u32_below(32);
else
- div->offset = prandom_u32_max(PAGE_SIZE);
- if (prandom_u32_max(8) == 0)
+ div->offset = get_random_u32_below(PAGE_SIZE);
+ if (get_random_u32_below(8) == 0)
div->offset_relative_to_alignmask = true;
div->flush_type = FLUSH_TYPE_NONE;
if (gen_flushes) {
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
div->flush_type = FLUSH_TYPE_REIMPORT;
break;
@@@ -988,7 -988,7 +988,7 @@@
if (div->flush_type != FLUSH_TYPE_NONE &&
!(req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0)
+ get_random_u32_below(2) == 0)
div->nosimd = true;
switch (div->flush_type) {
@@@ -1035,7 -1035,7 +1035,7 @@@ static void generate_random_testvec_con
p += scnprintf(p, end - p, "random:");
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
case 1:
cfg->inplace_mode = OUT_OF_PLACE;
@@@ -1050,12 -1050,12 +1050,12 @@@
break;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
cfg->req_flags |= CRYPTO_TFM_REQ_MAY_SLEEP;
p += scnprintf(p, end - p, " may_sleep");
}
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
cfg->finalization_type = FINALIZATION_TYPE_FINAL;
p += scnprintf(p, end - p, " use_final");
@@@ -1071,7 -1071,7 +1071,7 @@@
}
if (!(cfg->req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0) {
+ get_random_u32_below(2) == 0) {
cfg->nosimd = true;
p += scnprintf(p, end - p, " nosimd");
}
@@@ -1084,7 -1084,7 +1084,7 @@@
cfg->req_flags);
p += scnprintf(p, end - p, "]");
- if (cfg->inplace_mode == OUT_OF_PLACE && prandom_u32_max(2) == 0) {
+ if (cfg->inplace_mode == OUT_OF_PLACE && get_random_u32_below(2) == 0) {
p += scnprintf(p, end - p, " dst_divs=[");
p = generate_random_sgl_divisions(cfg->dst_divs,
ARRAY_SIZE(cfg->dst_divs),
@@@ -1093,13 -1093,13 +1093,13 @@@
p += scnprintf(p, end - p, "]");
}
- if (prandom_u32_max(2) == 0) {
- cfg->iv_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->iv_offset = get_random_u32_between(1, MAX_ALGAPI_ALIGNMASK + 1);
p += scnprintf(p, end - p, " iv_offset=%u", cfg->iv_offset);
}
- if (prandom_u32_max(2) == 0) {
- cfg->key_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->key_offset = get_random_u32_between(1, MAX_ALGAPI_ALIGNMASK + 1);
p += scnprintf(p, end - p, " key_offset=%u", cfg->key_offset);
}
@@@ -1652,8 -1652,8 +1652,8 @@@ static void generate_random_hash_testve
vec->ksize = 0;
if (maxkeysize) {
vec->ksize = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->ksize = 1 + prandom_u32_max(maxkeysize);
+ if (get_random_u32_below(4) == 0)
+ vec->ksize = get_random_u32_between(1, maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->ksize);
vec->setkey_error = crypto_shash_setkey(desc->tfm, vec->key,
@@@ -2218,13 -2218,13 +2218,13 @@@ static void mutate_aead_message(struct
const unsigned int aad_tail_size = aad_iv ? ivsize : 0;
const unsigned int authsize = vec->clen - vec->plen;
- if (prandom_u32_max(2) == 0 && vec->alen > aad_tail_size) {
+ if (get_random_u32_below(2) == 0 && vec->alen > aad_tail_size) {
/* Mutate the AAD */
flip_random_bit((u8 *)vec->assoc, vec->alen - aad_tail_size);
- if (prandom_u32_max(2) == 0)
+ if (get_random_u32_below(2) == 0)
return;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
/* Mutate auth tag (assuming it's at the end of ciphertext) */
flip_random_bit((u8 *)vec->ctext + vec->plen, authsize);
} else {
@@@ -2249,7 -2249,7 +2249,7 @@@ static void generate_aead_message(struc
const unsigned int ivsize = crypto_aead_ivsize(tfm);
const unsigned int authsize = vec->clen - vec->plen;
const bool inauthentic = (authsize >= MIN_COLLISION_FREE_AUTHSIZE) &&
- (prefer_inauthentic || prandom_u32_max(4) == 0);
+ (prefer_inauthentic || get_random_u32_below(4) == 0);
/* Generate the AAD. */
generate_random_bytes((u8 *)vec->assoc, vec->alen);
@@@ -2257,7 -2257,7 +2257,7 @@@
/* Avoid implementation-defined behavior. */
memcpy((u8 *)vec->assoc + vec->alen - ivsize, vec->iv, ivsize);
- if (inauthentic && prandom_u32_max(2) == 0) {
+ if (inauthentic && get_random_u32_below(2) == 0) {
/* Generate a random ciphertext. */
generate_random_bytes((u8 *)vec->ctext, vec->clen);
} else {
@@@ -2321,8 -2321,8 +2321,8 @@@ static void generate_random_aead_testve
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_aead_setkey(tfm, vec->key, vec->klen);
@@@ -2331,8 -2331,8 +2331,8 @@@
/* Tag length: in [0, maxauthsize], but usually choose maxauthsize */
authsize = maxauthsize;
- if (prandom_u32_max(4) == 0)
- authsize = prandom_u32_max(maxauthsize + 1);
+ if (get_random_u32_below(4) == 0)
+ authsize = get_random_u32_below(maxauthsize + 1);
if (prefer_inauthentic && authsize < MIN_COLLISION_FREE_AUTHSIZE)
authsize = MIN_COLLISION_FREE_AUTHSIZE;
if (WARN_ON(authsize > maxdatasize))
@@@ -2342,7 -2342,7 +2342,7 @@@
/* AAD, plaintext, and ciphertext lengths */
total_len = generate_random_length(maxdatasize);
- if (prandom_u32_max(4) == 0)
+ if (get_random_u32_below(4) == 0)
vec->alen = 0;
else
vec->alen = generate_random_length(total_len);
@@@ -2958,8 -2958,8 +2958,8 @@@ static void generate_random_cipher_test
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_skcipher_setkey(tfm, vec->key, vec->klen);
@@@ -4712,12 -4712,6 +4712,12 @@@ static const struct alg_test_desc alg_t
.alg = "cts(cbc(paes))",
.test = alg_test_null,
.fips_allowed = 1,
+ }, {
+ .alg = "cts(cbc(sm4))",
+ .test = alg_test_skcipher,
+ .suite = {
+ .cipher = __VECS(sm4_cts_tv_template)
+ }
}, {
.alg = "curve25519",
.test = alg_test_kpp,
@@@ -5592,12 -5586,6 +5592,12 @@@
.suite = {
.hash = __VECS(aes_xcbc128_tv_template)
}
+ }, {
+ .alg = "xcbc(sm4)",
+ .test = alg_test_hash,
+ .suite = {
+ .hash = __VECS(sm4_xcbc128_tv_template)
+ }
}, {
.alg = "xchacha12",
.test = alg_test_skcipher,
@@@ -5652,13 -5640,6 +5652,13 @@@
.suite = {
.cipher = __VECS(serpent_xts_tv_template)
}
+ }, {
+ .alg = "xts(sm4)",
+ .generic_driver = "xts(ecb(sm4-generic))",
+ .test = alg_test_skcipher,
+ .suite = {
+ .cipher = __VECS(sm4_xts_tv_template)
+ }
}, {
.alg = "xts(twofish)",
.generic_driver = "xts(ecb(twofish-generic))",
diff --combined drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 1160723c9d2d,29d2459bcc90..be14fce52a5b
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@@ -2424,7 -2424,7 +2424,7 @@@ gen8_dispatch_bsd_engine(struct drm_i91
/* Check whether the file_priv has already selected one ring. */
if ((int)file_priv->bsd_engine < 0)
file_priv->bsd_engine =
- prandom_u32_max(num_vcs_engines(dev_priv));
+ get_random_u32_below(num_vcs_engines(dev_priv));
return file_priv->bsd_engine;
}
@@@ -2954,6 -2954,11 +2954,6 @@@ await_fence_array(struct i915_execbuffe
int err;
for (n = 0; n < eb->num_fences; n++) {
- struct drm_syncobj *syncobj;
- unsigned int flags;
-
- syncobj = ptr_unpack_bits(eb->fences[n].syncobj, &flags, 2);
-
if (!eb->fences[n].dma_fence)
continue;
diff --combined drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 0187bc72310d,45b605e32c87..85bfa6498f6c
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@@ -3471,9 -3471,9 +3471,9 @@@ logical_ring_default_vfuncs(struct inte
if (GRAPHICS_VER_FULL(engine->i915) >= IP_VER(12, 50)) {
if (intel_engine_has_preemption(engine))
- engine->emit_bb_start = gen125_emit_bb_start;
+ engine->emit_bb_start = xehp_emit_bb_start;
else
- engine->emit_bb_start = gen125_emit_bb_start_noarb;
+ engine->emit_bb_start = xehp_emit_bb_start_noarb;
} else {
if (intel_engine_has_preemption(engine))
engine->emit_bb_start = gen8_emit_bb_start;
@@@ -3689,7 -3689,7 +3689,7 @@@ static void virtual_engine_initial_hint
* NB This does not force us to execute on this engine, it will just
* typically be the first we inspect for submission.
*/
- swp = prandom_u32_max(ve->num_siblings);
+ swp = get_random_u32_below(ve->num_siblings);
if (swp)
swap(ve->siblings[swp], ve->siblings[0]);
}
diff --combined drivers/mmc/core/core.c
index cdbaeb389fce,a1efda85c6f2..1bb70d438d6c
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@@ -56,7 -56,7 +56,7 @@@ static const unsigned freqs[] = { 40000
/*
* Enabling software CRCs on the data blocks can be a significant (30%)
* performance cost, and for other reasons may not always be desired.
- * So we allow it it to be disabled.
+ * So we allow it to be disabled.
*/
bool use_spi_crc = 1;
module_param(use_spi_crc, bool, 0);
@@@ -97,8 -97,8 +97,8 @@@ static void mmc_should_fail_request(str
!should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
return;
- data->error = data_errors[prandom_u32_max(ARRAY_SIZE(data_errors))];
- data->bytes_xfered = prandom_u32_max(data->bytes_xfered >> 9) << 9;
+ data->error = data_errors[get_random_u32_below(ARRAY_SIZE(data_errors))];
+ data->bytes_xfered = get_random_u32_below(data->bytes_xfered >> 9) << 9;
}
#else /* CONFIG_FAIL_MMC_REQUEST */
@@@ -527,7 -527,7 +527,7 @@@ EXPORT_SYMBOL(mmc_cqe_post_req)
* mmc_cqe_recovery - Recover from CQE errors.
* @host: MMC host to recover
*
- * Recovery consists of stopping CQE, stopping eMMC, discarding the queue in
+ * Recovery consists of stopping CQE, stopping eMMC, discarding the queue
* in eMMC, and discarding the queue in CQE. CQE must call
* mmc_cqe_request_done() on all requests. An error is returned if the eMMC
* fails to discard its queue.
@@@ -1134,13 -1134,7 +1134,13 @@@ u32 mmc_select_voltage(struct mmc_host
mmc_power_cycle(host, ocr);
} else {
bit = fls(ocr) - 1;
- ocr &= 3 << bit;
+ /*
+ * The bit variable represents the highest voltage bit set in
+ * the OCR register.
+ * To keep a range of 2 values (e.g. 3.2V/3.3V and 3.3V/3.4V),
+ * we must shift the mask '3' with (bit - 1).
+ */
+ ocr &= 3 << (bit - 1);
if (bit != host->ios.vdd)
dev_warn(mmc_dev(host), "exceeding card's volts\n");
}
diff --combined drivers/mmc/host/dw_mmc.c
index d35607128322,6ef410053037..e4d09c439051
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@@ -1363,7 -1363,7 +1363,7 @@@ static void __dw_mci_start_request(stru
* is just about to roll over.
*
* We do this whole thing under spinlock and only if the
- * command hasn't already completed (indicating the the irq
+ * command hasn't already completed (indicating the irq
* already ran so we don't want the timeout).
*/
spin_lock_irqsave(&host->irq_lock, irqflags);
@@@ -1858,7 -1858,7 +1858,7 @@@ static void dw_mci_start_fault_timer(st
* Try to inject the error at random points during the data transfer.
*/
hrtimer_start(&host->fault_timer,
- ms_to_ktime(prandom_u32_max(25)),
+ ms_to_ktime(get_random_u32_below(25)),
HRTIMER_MODE_REL);
}
diff --combined drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index af8843507f3d,0e6bf5e5c8a9..8ca6faf3fef5
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@@ -1128,7 -1128,7 +1128,7 @@@ static void brcmf_p2p_afx_handler(struc
if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
/* 100ms ~ 300ms */
err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
- 100 * (1 + prandom_u32_max(3)));
+ 100 * get_random_u32_between(1, 4));
else
err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
@@@ -2424,12 -2424,8 +2424,12 @@@ int brcmf_p2p_del_vif(struct wiphy *wip
brcmf_remove_interface(vif->ifp, true);
brcmf_cfg80211_arm_vif_event(cfg, NULL);
- if (iftype != NL80211_IFTYPE_P2P_DEVICE)
- p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;
+ if (iftype != NL80211_IFTYPE_P2P_DEVICE) {
+ if (vif == p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif)
+ p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;
+ if (vif == p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION2].vif)
+ p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION2].vif = NULL;
+ }
return err;
}
diff --combined drivers/scsi/scsi_debug.c
index 629853662b82,4e476f1bc3c3..a86db9761d00
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@@ -1899,13 -1899,6 +1899,13 @@@ static int resp_readcap16(struct scsi_c
arr[14] |= 0x40;
}
+ /*
+ * Since the scsi_debug READ CAPACITY implementation always reports the
+ * total disk capacity, set RC BASIS = 1 for host-managed ZBC devices.
+ */
+ if (devip->zmodel == BLK_ZONED_HM)
+ arr[12] |= 1 << 4;
+
arr[15] = sdebug_lowest_aligned & 0xff;
if (have_dif_prot) {
@@@ -5702,16 -5695,16 +5702,16 @@@ static int schedule_resp(struct scsi_cm
u64 ns = jiffies_to_nsecs(delta_jiff);
if (sdebug_random && ns < U32_MAX) {
- ns = prandom_u32_max((u32)ns);
+ ns = get_random_u32_below((u32)ns);
} else if (sdebug_random) {
ns >>= 12; /* scale to 4 usec precision */
if (ns < U32_MAX) /* over 4 hours max */
- ns = prandom_u32_max((u32)ns);
+ ns = get_random_u32_below((u32)ns);
ns <<= 12;
}
kt = ns_to_ktime(ns);
} else { /* ndelay has a 4.2 second max */
- kt = sdebug_random ? prandom_u32_max((u32)ndelay) :
+ kt = sdebug_random ? get_random_u32_below((u32)ndelay) :
(u32)ndelay;
if (ndelay < INCLUSIVE_TIMING_MAX_NS) {
u64 d = ktime_get_boottime_ns() - ns_from_boot;
diff --combined fs/ceph/inode.c
index 7bff2855aab6,fb255988dee8..29a6629f6299
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@@ -126,7 -126,7 +126,7 @@@ const struct inode_operations ceph_file
.setattr = ceph_setattr,
.getattr = ceph_getattr,
.listxattr = ceph_listxattr,
- .get_acl = ceph_get_acl,
+ .get_inode_acl = ceph_get_acl,
.set_acl = ceph_set_acl,
};
@@@ -362,7 -362,7 +362,7 @@@ static int ceph_fill_fragtree(struct in
if (nsplits != ci->i_fragtree_nsplits) {
update = true;
} else if (nsplits) {
- i = prandom_u32_max(nsplits);
+ i = get_random_u32_below(nsplits);
id = le32_to_cpu(fragtree->splits[i].frag);
if (!__ceph_find_frag(ci, id))
update = true;
@@@ -2255,7 -2255,7 +2255,7 @@@ int ceph_setattr(struct user_namespace
err = __ceph_setattr(inode, attr);
if (err >= 0 && (attr->ia_valid & ATTR_MODE))
- err = posix_acl_chmod(&init_user_ns, inode, attr->ia_mode);
+ err = posix_acl_chmod(&init_user_ns, dentry, attr->ia_mode);
return err;
}
@@@ -2417,10 -2417,10 +2417,10 @@@ static int statx_to_caps(u32 want, umod
{
int mask = 0;
- if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME))
+ if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_AUTH_SHARED;
- if (want & (STATX_NLINK|STATX_CTIME)) {
+ if (want & (STATX_NLINK|STATX_CTIME|STATX_CHANGE_COOKIE)) {
/*
* The link count for directories depends on inode->i_subdirs,
* and that is only updated when Fs caps are held.
@@@ -2431,10 -2431,11 +2431,10 @@@
mask |= CEPH_CAP_LINK_SHARED;
}
- if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|
- STATX_BLOCKS))
+ if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|STATX_BLOCKS|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_FILE_SHARED;
- if (want & (STATX_CTIME))
+ if (want & (STATX_CTIME|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_XATTR_SHARED;
return mask;
@@@ -2477,11 -2478,6 +2477,11 @@@ int ceph_getattr(struct user_namespace
valid_mask |= STATX_BTIME;
}
+ if (request_mask & STATX_CHANGE_COOKIE) {
+ stat->change_cookie = inode_peek_iversion_raw(inode);
+ valid_mask |= STATX_CHANGE_COOKIE;
+ }
+
if (ceph_snap(inode) == CEPH_NOSNAP)
stat->dev = sb->s_dev;
else
@@@ -2496,7 -2492,7 +2496,7 @@@
struct inode *parent;
parent = ceph_lookup_inode(sb, ceph_ino(inode));
- if (!parent)
+ if (IS_ERR(parent))
return PTR_ERR(parent);
pci = ceph_inode(parent);
@@@ -2523,8 -2519,6 +2523,8 @@@
stat->nlink = 1 + 1 + ci->i_subdirs;
}
+ stat->attributes_mask |= STATX_ATTR_CHANGE_MONOTONIC;
+ stat->attributes |= STATX_ATTR_CHANGE_MONOTONIC;
stat->result_mask = request_mask & valid_mask;
return err;
}
diff --combined fs/ext4/ialloc.c
index 67a257a69758,9fc1af8e19a3..9aa8b18bdac1
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@@ -465,7 -465,7 +465,7 @@@ static int find_group_orlov(struct supe
ext4fs_dirhash(parent, qstr->name, qstr->len, &hinfo);
parent_group = hinfo.hash % ngroups;
} else
- parent_group = prandom_u32_max(ngroups);
+ parent_group = get_random_u32_below(ngroups);
for (i = 0; i < ngroups; i++) {
g = (parent_group + i) % ngroups;
get_orlov_stats(sb, g, flex_size, &stats);
@@@ -870,7 -870,7 +870,7 @@@ static int ext4_xattr_credits_for_new_i
struct super_block *sb = dir->i_sb;
int nblocks = 0;
#ifdef CONFIG_EXT4_FS_POSIX_ACL
- struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
+ struct posix_acl *p = get_inode_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(p))
return PTR_ERR(p);
diff --combined fs/f2fs/gc.c
index 6466db75af5d,536d332d9e2e..aa561f698b54
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@@ -96,6 -96,16 +96,6 @@@ static int gc_thread_func(void *data
* invalidated soon after by user update or deletion.
* So, I'd like to wait some time to collect dirty segments.
*/
- if (sbi->gc_mode == GC_URGENT_HIGH) {
- spin_lock(&sbi->gc_urgent_high_lock);
- if (sbi->gc_urgent_high_remaining) {
- sbi->gc_urgent_high_remaining--;
- if (!sbi->gc_urgent_high_remaining)
- sbi->gc_mode = GC_NORMAL;
- }
- spin_unlock(&sbi->gc_urgent_high_lock);
- }
-
if (sbi->gc_mode == GC_URGENT_HIGH ||
sbi->gc_mode == GC_URGENT_MID) {
wait_ms = gc_th->urgent_sleep_time;
@@@ -152,15 -162,6 +152,15 @@@ do_gc
/* balancing f2fs's metadata periodically */
f2fs_balance_fs_bg(sbi, true);
next:
+ if (sbi->gc_mode != GC_NORMAL) {
+ spin_lock(&sbi->gc_remaining_trials_lock);
+ if (sbi->gc_remaining_trials) {
+ sbi->gc_remaining_trials--;
+ if (!sbi->gc_remaining_trials)
+ sbi->gc_mode = GC_NORMAL;
+ }
+ spin_unlock(&sbi->gc_remaining_trials_lock);
+ }
sb_end_write(sbi->sb);
} while (!kthread_should_stop());
@@@ -171,10 -172,13 +171,10 @@@ int f2fs_start_gc_thread(struct f2fs_sb
{
struct f2fs_gc_kthread *gc_th;
dev_t dev = sbi->sb->s_bdev->bd_dev;
- int err = 0;
gc_th = f2fs_kmalloc(sbi, sizeof(struct f2fs_gc_kthread), GFP_KERNEL);
- if (!gc_th) {
- err = -ENOMEM;
- goto out;
- }
+ if (!gc_th)
+ return -ENOMEM;
gc_th->urgent_sleep_time = DEF_GC_THREAD_URGENT_SLEEP_TIME;
gc_th->min_sleep_time = DEF_GC_THREAD_MIN_SLEEP_TIME;
@@@ -189,14 -193,12 +189,14 @@@
sbi->gc_thread->f2fs_gc_task = kthread_run(gc_thread_func, sbi,
"f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(gc_th->f2fs_gc_task)) {
- err = PTR_ERR(gc_th->f2fs_gc_task);
+ int err = PTR_ERR(gc_th->f2fs_gc_task);
+
kfree(gc_th);
sbi->gc_thread = NULL;
+ return err;
}
-out:
- return err;
+
+ return 0;
}
void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi)
@@@ -280,7 -282,7 +280,7 @@@ static void select_policy(struct f2fs_s
/* let's select beginning hot/small space first in no_heap mode*/
if (f2fs_need_rand_seg(sbi))
- p->offset = prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ p->offset = get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
else if (test_opt(sbi, NOHEAP) &&
(type == CURSEG_HOT_DATA || IS_NODESEG(type)))
p->offset = 0;
@@@ -1108,7 -1110,6 +1108,7 @@@ static bool is_alive(struct f2fs_sb_inf
if (ofs_in_node >= max_addrs) {
f2fs_err(sbi, "Inconsistent ofs_in_node:%u in summary, ino:%u, nid:%u, max:%u",
ofs_in_node, dni->ino, dni->nid, max_addrs);
+ f2fs_put_page(node_page, 1);
return false;
}
@@@ -2132,6 -2133,8 +2132,6 @@@ out_unlock
if (err)
return err;
- set_sbi_flag(sbi, SBI_IS_RESIZEFS);
-
freeze_super(sbi->sb);
f2fs_down_write(&sbi->gc_lock);
f2fs_down_write(&sbi->cp_global_sem);
@@@ -2147,7 -2150,6 +2147,7 @@@
if (err)
goto out_err;
+ set_sbi_flag(sbi, SBI_IS_RESIZEFS);
err = free_segment_range(sbi, secs, false);
if (err)
goto recover_out;
@@@ -2171,7 -2173,6 +2171,7 @@@
f2fs_commit_super(sbi, false);
}
recover_out:
+ clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
if (err) {
set_sbi_flag(sbi, SBI_NEED_FSCK);
f2fs_err(sbi, "resize_fs failed, should run fsck to repair!");
@@@ -2184,5 -2185,6 +2184,5 @@@ out_err
f2fs_up_write(&sbi->cp_global_sem);
f2fs_up_write(&sbi->gc_lock);
thaw_super(sbi->sb);
- clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
return err;
}
diff --combined fs/f2fs/segment.c
index aa4be7f25963,8319fdc59fb4..978a48b9b1c7
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@@ -620,11 -620,12 +620,11 @@@ int f2fs_create_flush_cmd_control(struc
{
dev_t dev = sbi->sb->s_bdev->bd_dev;
struct flush_cmd_control *fcc;
- int err = 0;
if (SM_I(sbi)->fcc_info) {
fcc = SM_I(sbi)->fcc_info;
if (fcc->f2fs_issue_flush)
- return err;
+ return 0;
goto init_thread;
}
@@@ -637,20 -638,19 +637,20 @@@
init_llist_head(&fcc->issue_list);
SM_I(sbi)->fcc_info = fcc;
if (!test_opt(sbi, FLUSH_MERGE))
- return err;
+ return 0;
init_thread:
fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
"f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(fcc->f2fs_issue_flush)) {
- err = PTR_ERR(fcc->f2fs_issue_flush);
+ int err = PTR_ERR(fcc->f2fs_issue_flush);
+
kfree(fcc);
SM_I(sbi)->fcc_info = NULL;
return err;
}
- return err;
+ return 0;
}
void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
@@@ -856,7 -856,7 +856,7 @@@ block_t f2fs_get_unusable_blocks(struc
}
mutex_unlock(&dirty_i->seglist_lock);
- unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
+ unusable = max(holes[DATA], holes[NODE]);
if (unusable > ovp_holes)
return unusable - ovp_holes;
return 0;
@@@ -1448,7 -1448,7 +1448,7 @@@ retry
if (i + 1 < dpolicy->granularity)
break;
- if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
+ if (i + 1 < dcc->max_ordered_discard && dpolicy->ordered)
return __issue_discard_cmd_orderly(sbi, dpolicy);
pend_list = &dcc->pend_list[i];
@@@ -2025,10 -2025,8 +2025,10 @@@ int f2fs_start_discard_thread(struct f2
dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
"f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
- if (IS_ERR(dcc->f2fs_issue_discard))
+ if (IS_ERR(dcc->f2fs_issue_discard)) {
err = PTR_ERR(dcc->f2fs_issue_discard);
+ dcc->f2fs_issue_discard = NULL;
+ }
return err;
}
@@@ -2048,7 -2046,6 +2048,7 @@@ static int create_discard_cmd_control(s
return -ENOMEM;
dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
+ dcc->max_ordered_discard = DEFAULT_MAX_ORDERED_DISCARD_GRANULARITY;
if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
dcc->discard_granularity = sbi->blocks_per_seg;
else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
@@@ -2537,7 -2534,7 +2537,7 @@@ static unsigned int __get_next_segno(st
sanity_check_seg_type(sbi, seg_type);
if (f2fs_need_rand_seg(sbi))
- return prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ return get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
/* if segs_per_sec is large than 1, we need to keep original policy. */
if (__is_large_section(sbi))
@@@ -2591,7 -2588,7 +2591,7 @@@ static void new_curseg(struct f2fs_sb_i
curseg->alloc_type = LFS;
if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
curseg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_between(1, sbi->max_fragment_chunk + 1);
}
static int __next_free_blkoff(struct f2fs_sb_info *sbi,
@@@ -2628,9 -2625,9 +2628,9 @@@ static void __refresh_next_blkoff(struc
/* To allocate block chunks in different sizes, use random number */
if (--seg->fragment_remained_chunk <= 0) {
seg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_between(1, sbi->max_fragment_chunk + 1);
seg->next_blkoff +=
- prandom_u32_max(sbi->max_fragment_hole) + 1;
+ get_random_u32_between(1, sbi->max_fragment_hole + 1);
}
}
}
diff --combined kernel/bpf/core.c
index e772d9cc0a38,38159f39e2af..d7e1b30c33d6
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@@ -864,7 -864,8 +864,7 @@@ static struct bpf_prog_pack *alloc_new_
list_add_tail(&pack->list, &pack_list);
set_vm_flush_reset_perms(pack->ptr);
- set_memory_ro((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
- set_memory_x((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
+ set_memory_rox((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
return pack;
}
@@@ -882,7 -883,8 +882,7 @@@ void *bpf_prog_pack_alloc(u32 size, bpf
if (ptr) {
bpf_fill_ill_insns(ptr, size);
set_vm_flush_reset_perms(ptr);
- set_memory_ro((unsigned long)ptr, size / PAGE_SIZE);
- set_memory_x((unsigned long)ptr, size / PAGE_SIZE);
+ set_memory_rox((unsigned long)ptr, size / PAGE_SIZE);
}
goto out;
}
@@@ -1030,7 -1032,7 +1030,7 @@@ bpf_jit_binary_alloc(unsigned int progl
hdr->size = size;
hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
PAGE_SIZE - sizeof(*hdr));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
/* Leave a random number of instructions before BPF code. */
*image_ptr = &hdr->image[start];
@@@ -1092,7 -1094,7 +1092,7 @@@ bpf_jit_binary_pack_alloc(unsigned int
hole = min_t(unsigned int, size - (proglen + sizeof(*ro_header)),
BPF_PROG_CHUNK_SIZE - sizeof(*ro_header));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
*image_ptr = &ro_header->image[start];
*rw_image = &(*rw_header)->image[start];
@@@ -2249,14 -2251,8 +2249,14 @@@ static void __bpf_prog_array_free_sleep
{
struct bpf_prog_array *progs;
+ /* If RCU Tasks Trace grace period implies RCU grace period, there is
+ * no need to call kfree_rcu(), just call kfree() directly.
+ */
progs = container_of(rcu, struct bpf_prog_array, rcu);
- kfree_rcu(progs, rcu);
+ if (rcu_trace_implies_rcu_gp())
+ kfree(progs);
+ else
+ kfree_rcu(progs, rcu);
}
void bpf_prog_array_free_sleepable(struct bpf_prog_array *progs)
diff --combined kernel/fork.c
index 4439f7ff78f6,ec57cae58ff1..cfff237094aa
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@@ -75,7 -75,6 +75,6 @@@
#include <linux/freezer.h>
#include <linux/delayacct.h>
#include <linux/taskstats_kern.h>
- #include <linux/random.h>
#include <linux/tty.h>
#include <linux/fs_struct.h>
#include <linux/magic.h>
@@@ -97,6 -96,7 +96,7 @@@
#include <linux/scs.h>
#include <linux/io_uring.h>
#include <linux/bpf.h>
+ #include <linux/stackprotector.h>
#include <asm/pgalloc.h>
#include <linux/uaccess.h>
@@@ -535,9 -535,6 +535,9 @@@ void put_task_stack(struct task_struct
void free_task(struct task_struct *tsk)
{
+#ifdef CONFIG_SECCOMP
+ WARN_ON_ONCE(tsk->seccomp.filter);
+#endif
release_user_cpus_ptr(tsk);
scs_release(tsk);
@@@ -2409,6 -2406,12 +2409,6 @@@ static __latent_entropy struct task_str
spin_lock(¤t->sighand->siglock);
- /*
- * Copy seccomp details explicitly here, in case they were changed
- * before holding sighand lock.
- */
- copy_seccomp(p);
-
rv_task_fork(p);
rseq_fork(p, clone_flags);
@@@ -2425,14 -2428,6 +2425,14 @@@
goto bad_fork_cancel_cgroup;
}
+ /* No more failure paths after this point. */
+
+ /*
+ * Copy seccomp details explicitly here, in case they were changed
+ * before holding sighand lock.
+ */
+ copy_seccomp(p);
+
init_task_pid_links(p);
if (likely(p->pid)) {
ptrace_init_task(p, (clone_flags & CLONE_PTRACE) || trace);
@@@ -2597,6 -2592,11 +2597,6 @@@ struct task_struct * __init fork_idle(i
return task;
}
-struct mm_struct *copy_init_mm(void)
-{
- return dup_mm(NULL, &init_mm);
-}
-
/*
* This is like kernel_clone(), but shaved down and tailored to just
* creating io_uring workers. It returns a created task, or an error pointer.
@@@ -3015,27 -3015,10 +3015,27 @@@ static void sighand_ctor(void *data
init_waitqueue_head(&sighand->signalfd_wqh);
}
-void __init proc_caches_init(void)
+void __init mm_cache_init(void)
{
unsigned int mm_size;
+ /*
+ * The mm_cpumask is located at the end of mm_struct, and is
+ * dynamically sized based on the maximum CPU number this system
+ * can have, taking hotplug into account (nr_cpu_ids).
+ */
+ mm_size = sizeof(struct mm_struct) + cpumask_size();
+
+ mm_cachep = kmem_cache_create_usercopy("mm_struct",
+ mm_size, ARCH_MIN_MMSTRUCT_ALIGN,
+ SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
+ offsetof(struct mm_struct, saved_auxv),
+ sizeof_field(struct mm_struct, saved_auxv),
+ NULL);
+}
+
+void __init proc_caches_init(void)
+{
sighand_cachep = kmem_cache_create("sighand_cache",
sizeof(struct sighand_struct), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_TYPESAFE_BY_RCU|
@@@ -3053,6 -3036,19 +3053,6 @@@
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
NULL);
- /*
- * The mm_cpumask is located at the end of mm_struct, and is
- * dynamically sized based on the maximum CPU number this system
- * can have, taking hotplug into account (nr_cpu_ids).
- */
- mm_size = sizeof(struct mm_struct) + cpumask_size();
-
- mm_cachep = kmem_cache_create_usercopy("mm_struct",
- mm_size, ARCH_MIN_MMSTRUCT_ALIGN,
- SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
- offsetof(struct mm_struct, saved_auxv),
- sizeof_field(struct mm_struct, saved_auxv),
- NULL);
vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC|SLAB_ACCOUNT);
mmap_init();
nsproxy_cache_init();
diff --combined kernel/time/clocksource.c
index 4015ec6503a5,9cf32ccda715..5f9e0cb051c3
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@@ -310,7 -310,7 +310,7 @@@ static void clocksource_verify_choose_c
* CPUs that are currently online.
*/
for (i = 1; i < n; i++) {
- cpu = prandom_u32_max(nr_cpu_ids);
+ cpu = get_random_u32_below(nr_cpu_ids);
cpu = cpumask_next(cpu - 1, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = cpumask_first(cpu_online_mask);
@@@ -386,7 -386,7 +386,7 @@@ EXPORT_SYMBOL_GPL(clocksource_verify_pe
static void clocksource_watchdog(struct timer_list *unused)
{
- u64 csnow, wdnow, cslast, wdlast, delta;
+ u64 csnow, wdnow, cslast, wdlast, delta, wdi;
int next_cpu, reset_pending;
int64_t wd_nsec, cs_nsec;
struct clocksource *cs;
@@@ -440,38 -440,6 +440,38 @@@
if (atomic_read(&watchdog_reset_pending))
continue;
+ /* Check for bogus measurements. */
+ wdi = jiffies_to_nsecs(WATCHDOG_INTERVAL);
+ if (wd_nsec > (wdi << 2) || cs_nsec > (wdi << 2)) {
+ bool needwarn = false;
+ u64 wd_lb;
+
+ cs->wd_bogus_count++;
+ if (!cs->wd_bogus_shift) {
+ needwarn = true;
+ } else {
+ delta = clocksource_delta(wdnow, cs->wd_last_bogus, watchdog->mask);
+ wd_lb = clocksource_cyc2ns(delta, watchdog->mult, watchdog->shift);
+ if ((1 << cs->wd_bogus_shift) * wdi <= wd_lb)
+ needwarn = true;
+ }
+ if (needwarn) {
+ /* This can happen on busy systems, which can delay the watchdog. */
+ pr_warn("timekeeping watchdog on CPU%d: Watchdog clocksource '%s' advanced an excessive %lld ns during %d-jiffy time interval (%lu since last message), probable CPU overutilization, skipping watchdog check.\n", smp_processor_id(), watchdog->name, wd_nsec, WATCHDOG_INTERVAL, cs->wd_bogus_count);
+ cs->wd_last_bogus = wdnow;
+ if (cs->wd_bogus_shift < 10)
+ cs->wd_bogus_shift++;
+ cs->wd_bogus_count = 0;
+ }
+ continue;
+ }
+ /* Check too-short measurements second to handle wrap. */
+ if (wd_nsec < (wdi >> 2) || cs_nsec < (wdi >> 2)) {
+ /* This usually indicates broken timer code or hardware. */
+ pr_warn("timekeeping watchdog on CPU%d: Watchdog clocksource '%s' advanced only %lld ns during %d-jiffy time interval, skipping watchdog check.\n", smp_processor_id(), watchdog->name, wd_nsec, WATCHDOG_INTERVAL);
+ continue;
+ }
+
/* Check the deviation from the watchdog clocksource. */
md = cs->uncertainty_margin + watchdog->uncertainty_margin;
if (abs(cs_nsec - wd_nsec) > md) {
diff --combined lib/kobject.c
index ba1017cd67d1,af1f5f2954d4..62b2b0643cbb
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@@ -94,10 -94,10 +94,10 @@@ static int create_dir(struct kobject *k
return 0;
}
-static int get_kobj_path_length(struct kobject *kobj)
+static int get_kobj_path_length(const struct kobject *kobj)
{
int length = 1;
- struct kobject *parent = kobj;
+ const struct kobject *parent = kobj;
/* walk up the ancestors until we hit the one pointing to the
* root.
@@@ -112,9 -112,9 +112,9 @@@
return length;
}
-static void fill_kobj_path(struct kobject *kobj, char *path, int length)
+static void fill_kobj_path(const struct kobject *kobj, char *path, int length)
{
- struct kobject *parent;
+ const struct kobject *parent;
--length;
for (parent = kobj; parent; parent = parent->parent) {
@@@ -136,7 -136,7 +136,7 @@@
*
* Return: The newly allocated memory, caller must free with kfree().
*/
-char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask)
+char *kobject_get_path(const struct kobject *kobj, gfp_t gfp_mask)
{
char *path;
int len;
@@@ -694,7 -694,7 +694,7 @@@ static void kobject_release(struct kre
{
struct kobject *kobj = container_of(kref, struct kobject, kref);
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
- unsigned long delay = HZ + HZ * prandom_u32_max(4);
+ unsigned long delay = HZ + HZ * get_random_u32_below(4);
pr_info("kobject: '%s' (%p): %s, parent %p (delayed %ld)\n",
kobject_name(kobj), kobj, __func__, kobj->parent, delay);
INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);
@@@ -834,9 -834,6 +834,9 @@@ EXPORT_SYMBOL_GPL(kobj_sysfs_ops)
/**
* kset_register() - Initialize and add a kset.
* @k: kset.
+ *
+ * NOTE: On error, the kset.kobj.name allocated by() kobj_set_name()
+ * is freed, it can not be used any more.
*/
int kset_register(struct kset *k)
{
@@@ -847,12 -844,8 +847,12 @@@
kset_init(k);
err = kobject_add_internal(&k->kobj);
- if (err)
+ if (err) {
+ kfree_const(k->kobj.name);
+ /* Set it to NULL to avoid accessing bad pointer in callers. */
+ k->kobj.name = NULL;
return err;
+ }
kobject_uevent(&k->kobj, KOBJ_ADD);
return 0;
}
diff --combined lib/test_printf.c
index 1fb12c1a0fa9,da5efc8b8543..1c1c9f2b5a71
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@@ -126,7 -126,7 +126,7 @@@ __test(const char *expect, int elen, co
* be able to print it as expected.
*/
failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap);
- rand = 1 + prandom_u32_max(elen+1);
+ rand = get_random_u32_between(1, elen + 2);
/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
failed_tests += do_test(rand, expect, elen, fmt, ap);
failed_tests += do_test(0, expect, elen, fmt, ap);
@@@ -704,29 -704,31 +704,29 @@@ flags(void
static void __init fwnode_pointer(void)
{
- const struct software_node softnodes[] = {
- { .name = "first", },
- { .name = "second", .parent = &softnodes[0], },
- { .name = "third", .parent = &softnodes[1], },
- { NULL /* Guardian */ }
- };
- const char * const full_name = "first/second/third";
+ const struct software_node first = { .name = "first" };
+ const struct software_node second = { .name = "second", .parent = &first };
+ const struct software_node third = { .name = "third", .parent = &second };
+ const struct software_node *group[] = { &first, &second, &third, NULL };
const char * const full_name_second = "first/second";
+ const char * const full_name_third = "first/second/third";
const char * const second_name = "second";
const char * const third_name = "third";
int rval;
- rval = software_node_register_nodes(softnodes);
+ rval = software_node_register_node_group(group);
if (rval) {
pr_warn("cannot register softnodes; rval %d\n", rval);
return;
}
- test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1]));
- test(full_name, "%pfw", software_node_fwnode(&softnodes[2]));
- test(full_name, "%pfwf", software_node_fwnode(&softnodes[2]));
- test(second_name, "%pfwP", software_node_fwnode(&softnodes[1]));
- test(third_name, "%pfwP", software_node_fwnode(&softnodes[2]));
+ test(full_name_second, "%pfw", software_node_fwnode(&second));
+ test(full_name_third, "%pfw", software_node_fwnode(&third));
+ test(full_name_third, "%pfwf", software_node_fwnode(&third));
+ test(second_name, "%pfwP", software_node_fwnode(&second));
+ test(third_name, "%pfwP", software_node_fwnode(&third));
- software_node_unregister_nodes(softnodes);
+ software_node_unregister_node_group(group);
}
static void __init fourcc_pointer(void)
diff --combined mm/slub.c
index 0a14e7bc278c,7cd2c657030a..1fd8e1f15cd0
--- a/mm/slub.c
+++ b/mm/slub.c
@@@ -1800,8 -1800,6 +1800,8 @@@ static inline struct slab *alloc_slab_p
slab = folio_slab(folio);
__folio_set_slab(folio);
+ /* Make the flag visible before any changes to folio->mapping */
+ smp_wmb();
if (page_is_pfmemalloc(folio_page(folio, 0)))
slab_set_pfmemalloc(slab);
@@@ -1883,7 -1881,7 +1883,7 @@@ static bool shuffle_freelist(struct kme
return false;
freelist_count = oo_objects(s->oo);
- pos = prandom_u32_max(freelist_count);
+ pos = get_random_u32_below(freelist_count);
page_limit = slab->objects * s->size;
start = fixup_red_left(s, slab_address(slab));
@@@ -2001,11 -1999,17 +2001,11 @@@ static void __free_slab(struct kmem_cac
int order = folio_order(folio);
int pages = 1 << order;
- if (kmem_cache_debug_flags(s, SLAB_CONSISTENCY_CHECKS)) {
- void *p;
-
- slab_pad_check(s, slab);
- for_each_object(p, s, slab_address(slab), slab->objects)
- check_object(s, slab, p, SLUB_RED_INACTIVE);
- }
-
__slab_clear_pfmemalloc(slab);
- __folio_clear_slab(folio);
folio->mapping = NULL;
+ /* Make the mapping reset visible before clearing the flag */
+ smp_wmb();
+ __folio_clear_slab(folio);
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += pages;
unaccount_slab(slab, order, s);
@@@ -2021,17 -2025,9 +2021,17 @@@ static void rcu_free_slab(struct rcu_he
static void free_slab(struct kmem_cache *s, struct slab *slab)
{
- if (unlikely(s->flags & SLAB_TYPESAFE_BY_RCU)) {
+ if (kmem_cache_debug_flags(s, SLAB_CONSISTENCY_CHECKS)) {
+ void *p;
+
+ slab_pad_check(s, slab);
+ for_each_object(p, s, slab_address(slab), slab->objects)
+ check_object(s, slab, p, SLUB_RED_INACTIVE);
+ }
+
+ if (unlikely(s->flags & SLAB_TYPESAFE_BY_RCU))
call_rcu(&slab->rcu_head, rcu_free_slab);
- } else
+ else
__free_slab(s, slab);
}
@@@ -2415,7 -2411,7 +2415,7 @@@ static void init_kmem_cache_cpus(struc
static void deactivate_slab(struct kmem_cache *s, struct slab *slab,
void *freelist)
{
- enum slab_modes { M_NONE, M_PARTIAL, M_FULL, M_FREE, M_FULL_NOLIST };
+ enum slab_modes { M_NONE, M_PARTIAL, M_FREE, M_FULL_NOLIST };
struct kmem_cache_node *n = get_node(s, slab_nid(slab));
int free_delta = 0;
enum slab_modes mode = M_NONE;
@@@ -2491,6 -2487,14 +2491,6 @@@ redo
* acquire_slab() will see a slab that is frozen
*/
spin_lock_irqsave(&n->list_lock, flags);
- } else if (kmem_cache_debug_flags(s, SLAB_STORE_USER)) {
- mode = M_FULL;
- /*
- * This also ensures that the scanning of full
- * slabs from diagnostic functions will not see
- * any frozen slabs.
- */
- spin_lock_irqsave(&n->list_lock, flags);
} else {
mode = M_FULL_NOLIST;
}
@@@ -2500,7 -2504,7 +2500,7 @@@
old.freelist, old.counters,
new.freelist, new.counters,
"unfreezing slab")) {
- if (mode == M_PARTIAL || mode == M_FULL)
+ if (mode == M_PARTIAL)
spin_unlock_irqrestore(&n->list_lock, flags);
goto redo;
}
@@@ -2514,6 -2518,10 +2514,6 @@@
stat(s, DEACTIVATE_EMPTY);
discard_slab(s, slab);
stat(s, FREE_SLAB);
- } else if (mode == M_FULL) {
- add_full(s, n, slab);
- spin_unlock_irqrestore(&n->list_lock, flags);
- stat(s, DEACTIVATE_FULL);
} else if (mode == M_FULL_NOLIST) {
stat(s, DEACTIVATE_FULL);
}
@@@ -4009,8 -4017,7 +4009,8 @@@ init_kmem_cache_node(struct kmem_cache_
static inline int alloc_kmem_cache_cpus(struct kmem_cache *s)
{
BUILD_BUG_ON(PERCPU_DYNAMIC_EARLY_SIZE <
- KMALLOC_SHIFT_HIGH * sizeof(struct kmem_cache_cpu));
+ NR_KMALLOC_TYPES * KMALLOC_SHIFT_HIGH *
+ sizeof(struct kmem_cache_cpu));
/*
* Must align to double word boundary for the double cmpxchg
@@@ -5579,21 -5586,7 +5579,21 @@@ static ssize_t failslab_show(struct kme
{
return sysfs_emit(buf, "%d\n", !!(s->flags & SLAB_FAILSLAB));
}
-SLAB_ATTR_RO(failslab);
+
+static ssize_t failslab_store(struct kmem_cache *s, const char *buf,
+ size_t length)
+{
+ if (s->refcount > 1)
+ return -EINVAL;
+
+ if (buf[0] == '1')
+ WRITE_ONCE(s->flags, s->flags | SLAB_FAILSLAB);
+ else
+ WRITE_ONCE(s->flags, s->flags & ~SLAB_FAILSLAB);
+
+ return length;
+}
+SLAB_ATTR(failslab);
#endif
static ssize_t shrink_show(struct kmem_cache *s, char *buf)
@@@ -5927,6 -5920,11 +5927,6 @@@ static int sysfs_slab_add(struct kmem_c
struct kset *kset = cache_kset(s);
int unmergeable = slab_unmergeable(s);
- if (!kset) {
- kobject_init(&s->kobj, &slab_ktype);
- return 0;
- }
-
if (!unmergeable && disable_higher_order_debug &&
(slub_debug & DEBUG_METADATA_FLAGS))
unmergeable = 1;
@@@ -6056,7 -6054,8 +6056,7 @@@ static int __init slab_sysfs_init(void
mutex_unlock(&slab_mutex);
return 0;
}
-
-__initcall(slab_sysfs_init);
+late_initcall(slab_sysfs_init);
#endif /* CONFIG_SYSFS */
#if defined(CONFIG_SLUB_DEBUG) && defined(CONFIG_DEBUG_FS)
diff --combined net/bluetooth/mgmt.c
index 0dd30a3beb77,bab37a529db5..38828621dd3d
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@@ -7373,9 -7373,8 +7373,8 @@@ static int get_conn_info(struct sock *s
/* To avoid client trying to guess when to poll again for information we
* calculate conn info age as random value between min/max set in hdev.
*/
- conn_info_age = hdev->conn_info_min_age +
- prandom_u32_max(hdev->conn_info_max_age -
- hdev->conn_info_min_age);
+ conn_info_age = get_random_u32_between(hdev->conn_info_min_age,
+ hdev->conn_info_max_age);
/* Query controller to refresh cached values if they are too old or were
* never read.
@@@ -8859,7 -8858,7 +8858,7 @@@ static int add_ext_adv_params(struct so
* extra parameters we don't know about will be ignored in this request.
*/
if (data_len < MGMT_ADD_EXT_ADV_PARAMS_MIN_SIZE)
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_EXT_ADV_PARAMS,
MGMT_STATUS_INVALID_PARAMS);
flags = __le32_to_cpu(cp->flags);
diff --combined net/can/j1939/transport.c
index f26f4cfa9e63,67d36776aff4..5c722b55fe23
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@@ -987,7 -987,7 +987,7 @@@ static int j1939_session_tx_eoma(struc
/* wait for the EOMA packet to come in */
j1939_tp_set_rxtimeout(session, 1250);
- netdev_dbg(session->priv->ndev, "%p: 0x%p\n", __func__, session);
+ netdev_dbg(session->priv->ndev, "%s: 0x%p\n", __func__, session);
return 0;
}
@@@ -1168,7 -1168,7 +1168,7 @@@ static enum hrtimer_restart j1939_tp_tx
if (session->tx_retry < J1939_XTP_TX_RETRY_LIMIT) {
session->tx_retry++;
j1939_tp_schedule_txtimer(session,
- 10 + prandom_u32_max(16));
+ 10 + get_random_u32_below(16));
} else {
netdev_alert(priv->ndev, "%s: 0x%p: tx retry count reached\n",
__func__, session);
diff --combined net/ipv4/tcp_input.c
index d764b5854dfc,1a348298a99e..c9e7c9f57ee1
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@@ -3646,7 -3646,8 +3646,8 @@@ static void tcp_send_challenge_ack(stru
u32 half = (ack_limit + 1) >> 1;
WRITE_ONCE(net->ipv4.tcp_challenge_timestamp, now);
- WRITE_ONCE(net->ipv4.tcp_challenge_count, half + prandom_u32_max(ack_limit));
+ WRITE_ONCE(net->ipv4.tcp_challenge_count,
+ get_random_u32_between(half, ack_limit + half));
}
count = READ_ONCE(net->ipv4.tcp_challenge_count);
if (count > 0) {
@@@ -4764,8 -4765,8 +4765,8 @@@ static void tcp_ofo_queue(struct sock *
}
}
-static bool tcp_prune_ofo_queue(struct sock *sk);
-static int tcp_prune_queue(struct sock *sk);
+static bool tcp_prune_ofo_queue(struct sock *sk, const struct sk_buff *in_skb);
+static int tcp_prune_queue(struct sock *sk, const struct sk_buff *in_skb);
static int tcp_try_rmem_schedule(struct sock *sk, struct sk_buff *skb,
unsigned int size)
@@@ -4773,11 -4774,11 +4774,11 @@@
if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
!sk_rmem_schedule(sk, skb, size)) {
- if (tcp_prune_queue(sk) < 0)
+ if (tcp_prune_queue(sk, skb) < 0)
return -1;
while (!sk_rmem_schedule(sk, skb, size)) {
- if (!tcp_prune_ofo_queue(sk))
+ if (!tcp_prune_ofo_queue(sk, skb))
return -1;
}
}
@@@ -5329,8 -5330,6 +5330,8 @@@ new_range
* Clean the out-of-order queue to make room.
* We drop high sequences packets to :
* 1) Let a chance for holes to be filled.
+ * This means we do not drop packets from ooo queue if their sequence
+ * is before incoming packet sequence.
* 2) not add too big latencies if thousands of packets sit there.
* (But if application shrinks SO_RCVBUF, we could still end up
* freeing whole queue here)
@@@ -5338,31 -5337,24 +5339,31 @@@
*
* Return true if queue has shrunk.
*/
-static bool tcp_prune_ofo_queue(struct sock *sk)
+static bool tcp_prune_ofo_queue(struct sock *sk, const struct sk_buff *in_skb)
{
struct tcp_sock *tp = tcp_sk(sk);
struct rb_node *node, *prev;
+ bool pruned = false;
int goal;
if (RB_EMPTY_ROOT(&tp->out_of_order_queue))
return false;
- NET_INC_STATS(sock_net(sk), LINUX_MIB_OFOPRUNED);
goal = sk->sk_rcvbuf >> 3;
node = &tp->ooo_last_skb->rbnode;
+
do {
+ struct sk_buff *skb = rb_to_skb(node);
+
+ /* If incoming skb would land last in ofo queue, stop pruning. */
+ if (after(TCP_SKB_CB(in_skb)->seq, TCP_SKB_CB(skb)->seq))
+ break;
+ pruned = true;
prev = rb_prev(node);
rb_erase(node, &tp->out_of_order_queue);
- goal -= rb_to_skb(node)->truesize;
- tcp_drop_reason(sk, rb_to_skb(node),
- SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE);
+ goal -= skb->truesize;
+ tcp_drop_reason(sk, skb, SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE);
+ tp->ooo_last_skb = rb_to_skb(prev);
if (!prev || goal <= 0) {
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf &&
!tcp_under_memory_pressure(sk))
@@@ -5371,18 -5363,16 +5372,18 @@@
}
node = prev;
} while (node);
- tp->ooo_last_skb = rb_to_skb(prev);
- /* Reset SACK state. A conforming SACK implementation will
- * do the same at a timeout based retransmit. When a connection
- * is in a sad state like this, we care only about integrity
- * of the connection not performance.
- */
- if (tp->rx_opt.sack_ok)
- tcp_sack_reset(&tp->rx_opt);
- return true;
+ if (pruned) {
+ NET_INC_STATS(sock_net(sk), LINUX_MIB_OFOPRUNED);
+ /* Reset SACK state. A conforming SACK implementation will
+ * do the same at a timeout based retransmit. When a connection
+ * is in a sad state like this, we care only about integrity
+ * of the connection not performance.
+ */
+ if (tp->rx_opt.sack_ok)
+ tcp_sack_reset(&tp->rx_opt);
+ }
+ return pruned;
}
/* Reduce allocated memory if we can, trying to get
@@@ -5392,7 -5382,7 +5393,7 @@@
* until the socket owning process reads some of the data
* to stabilize the situation.
*/
-static int tcp_prune_queue(struct sock *sk)
+static int tcp_prune_queue(struct sock *sk, const struct sk_buff *in_skb)
{
struct tcp_sock *tp = tcp_sk(sk);
@@@ -5419,7 -5409,7 +5420,7 @@@
/* Collapsing did not help, destructive actions follow.
* This must not ever occur. */
- tcp_prune_ofo_queue(sk);
+ tcp_prune_ofo_queue(sk, in_skb);
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf)
return 0;
diff --combined net/netlink/af_netlink.c
index 9ebdf3262015,7a401d94463a..b8afec32cff6
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@@ -812,17 -812,6 +812,17 @@@ static int netlink_release(struct socke
}
sock_prot_inuse_add(sock_net(sk), &netlink_proto, -1);
+
+ /* Because struct net might disappear soon, do not keep a pointer. */
+ if (!sk->sk_net_refcnt && sock_net(sk) != &init_net) {
+ __netns_tracker_free(sock_net(sk), &sk->ns_tracker, false);
+ /* Because of deferred_put_nlk_sk and use of work queue,
+ * it is possible netns will be freed before this socket.
+ */
+ sock_net_set(sk, &init_net);
+ __netns_tracker_alloc(&init_net, &sk->ns_tracker,
+ false, GFP_KERNEL);
+ }
call_rcu(&nlk->rcu, deferred_put_nlk_sk);
return 0;
}
@@@ -846,7 -835,7 +846,7 @@@ retry
/* Bind collision, search negative portid values. */
if (rover == -4096)
/* rover will be in range [S32_MIN, -4097] */
- rover = S32_MIN + prandom_u32_max(-4096 - S32_MIN);
+ rover = S32_MIN + get_random_u32_below(-4096 - S32_MIN);
else if (rover >= -4096)
rover = -4097;
portid = rover--;
@@@ -2499,24 -2488,19 +2499,24 @@@ void netlink_ack(struct sk_buff *in_skb
flags |= NLM_F_ACK_TLVS;
skb = nlmsg_new(payload + tlvlen, GFP_KERNEL);
- if (!skb) {
- NETLINK_CB(in_skb).sk->sk_err = ENOBUFS;
- sk_error_report(NETLINK_CB(in_skb).sk);
- return;
- }
+ if (!skb)
+ goto err_skb;
rep = nlmsg_put(skb, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq,
- NLMSG_ERROR, payload, flags);
+ NLMSG_ERROR, sizeof(*errmsg), flags);
+ if (!rep)
+ goto err_bad_put;
errmsg = nlmsg_data(rep);
errmsg->error = err;
- unsafe_memcpy(&errmsg->msg, nlh, payload > sizeof(*errmsg)
- ? nlh->nlmsg_len : sizeof(*nlh),
- /* Bounds checked by the skb layer. */);
+ errmsg->msg = *nlh;
+
+ if (!(flags & NLM_F_CAPPED)) {
+ if (!nlmsg_append(skb, nlmsg_len(nlh)))
+ goto err_bad_put;
+
+ memcpy(errmsg->msg.nlmsg_data, nlh->nlmsg_data,
+ nlmsg_len(nlh));
+ }
if (tlvlen)
netlink_ack_tlv_fill(in_skb, skb, nlh, err, extack);
@@@ -2524,14 -2508,6 +2524,14 @@@
nlmsg_end(skb, rep);
nlmsg_unicast(in_skb->sk, skb, NETLINK_CB(in_skb).portid);
+
+ return;
+
+err_bad_put:
+ nlmsg_free(skb);
+err_skb:
+ NETLINK_CB(in_skb).sk->sk_err = ENOBUFS;
+ sk_error_report(NETLINK_CB(in_skb).sk);
}
EXPORT_SYMBOL(netlink_ack);
diff --combined net/packet/af_packet.c
index 44f20cf8a0c0,51a47ade92e8..4155ce680b41
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@@ -1350,7 -1350,7 +1350,7 @@@ static bool fanout_flow_is_huge(struct
if (READ_ONCE(history[i]) == rxhash)
count++;
- victim = prandom_u32_max(ROLLOVER_HLEN);
+ victim = get_random_u32_below(ROLLOVER_HLEN);
/* Avoid dirtying the cache line if possible */
if (READ_ONCE(history[victim]) != rxhash)
@@@ -1386,7 -1386,7 +1386,7 @@@ static unsigned int fanout_demux_rnd(st
struct sk_buff *skb,
unsigned int num)
{
- return prandom_u32_max(num);
+ return get_random_u32_below(num);
}
static unsigned int fanout_demux_rollover(struct packet_fanout *f,
@@@ -1777,7 -1777,6 +1777,7 @@@ static int fanout_add(struct sock *sk,
match->prot_hook.af_packet_net = read_pnet(&match->net);
match->prot_hook.id_match = match_fanout_group;
match->max_num_members = args->max_num_members;
+ match->prot_hook.ignore_outgoing = type_flags & PACKET_FANOUT_FLAG_IGNORE_OUTGOING;
list_add(&match->list, &fanout_list);
}
err = -EINVAL;
@@@ -3278,7 -3277,7 +3278,7 @@@ static int packet_bind_spkt(struct sock
int addr_len)
{
struct sock *sk = sock->sk;
- char name[sizeof(uaddr->sa_data) + 1];
+ char name[sizeof(uaddr->sa_data_min) + 1];
/*
* Check legality
@@@ -3289,8 -3288,8 +3289,8 @@@
/* uaddr->sa_data comes from the userspace, it's not guaranteed to be
* zero-terminated.
*/
- memcpy(name, uaddr->sa_data, sizeof(uaddr->sa_data));
- name[sizeof(uaddr->sa_data)] = 0;
+ memcpy(name, uaddr->sa_data, sizeof(uaddr->sa_data_min));
+ name[sizeof(uaddr->sa_data_min)] = 0;
return packet_do_bind(sk, name, 0, pkt_sk(sk)->num);
}
@@@ -3562,11 -3561,11 +3562,11 @@@ static int packet_getname_spkt(struct s
return -EOPNOTSUPP;
uaddr->sa_family = AF_PACKET;
- memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data));
+ memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data_min));
rcu_read_lock();
dev = dev_get_by_index_rcu(sock_net(sk), READ_ONCE(pkt_sk(sk)->ifindex));
if (dev)
- strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
+ strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data_min));
rcu_read_unlock();
return sizeof(*uaddr);
diff --combined net/sctp/socket.c
index 3e83963d1b8a,cfe72085fdc4..b198de62f376
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@@ -5098,17 -5098,13 +5098,17 @@@ static void sctp_destroy_sock(struct so
}
/* Triggered when there are no references on the socket anymore */
-static void sctp_destruct_sock(struct sock *sk)
+static void sctp_destruct_common(struct sock *sk)
{
struct sctp_sock *sp = sctp_sk(sk);
/* Free up the HMAC transform. */
crypto_free_shash(sp->hmac);
+}
+static void sctp_destruct_sock(struct sock *sk)
+{
+ sctp_destruct_common(sk);
inet_sock_destruct(sk);
}
@@@ -8323,7 -8319,7 +8323,7 @@@ static int sctp_get_port_local(struct s
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32_max(remaining) + low;
+ rover = get_random_u32_below(remaining) + low;
do {
rover++;
@@@ -9431,7 -9427,7 +9431,7 @@@ void sctp_copy_sock(struct sock *newsk
sctp_sk(newsk)->reuse = sp->reuse;
newsk->sk_shutdown = sk->sk_shutdown;
- newsk->sk_destruct = sctp_destruct_sock;
+ newsk->sk_destruct = sk->sk_destruct;
newsk->sk_family = sk->sk_family;
newsk->sk_protocol = IPPROTO_SCTP;
newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
@@@ -9666,20 -9662,11 +9666,20 @@@ struct proto sctp_prot =
#if IS_ENABLED(CONFIG_IPV6)
-#include <net/transp_v6.h>
-static void sctp_v6_destroy_sock(struct sock *sk)
+static void sctp_v6_destruct_sock(struct sock *sk)
+{
+ sctp_destruct_common(sk);
+ inet6_sock_destruct(sk);
+}
+
+static int sctp_v6_init_sock(struct sock *sk)
{
- sctp_destroy_sock(sk);
- inet6_destroy_sock(sk);
+ int ret = sctp_init_sock(sk);
+
+ if (!ret)
+ sk->sk_destruct = sctp_v6_destruct_sock;
+
+ return ret;
}
struct proto sctpv6_prot = {
@@@ -9689,8 -9676,8 +9689,8 @@@
.disconnect = sctp_disconnect,
.accept = sctp_accept,
.ioctl = sctp_ioctl,
- .init = sctp_init_sock,
- .destroy = sctp_v6_destroy_sock,
+ .init = sctp_v6_init_sock,
+ .destroy = sctp_destroy_sock,
.shutdown = sctp_shutdown,
.setsockopt = sctp_setsockopt,
.getsockopt = sctp_getsockopt,
--
LinuxNextTracking
1
0
Name of failed tests
====================
maint
-----
* difference between net and batadv maint
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=y TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=n TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
master
------
* difference between net-next and batadv master
* headers
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=y TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=n TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
Output of different failed tests
================================
maint: difference between net and batadv maint
----------------------------------------------
net/net/batman-adv/bat_v_elp.c | 1
net/net/batman-adv/main.h | 2 -
net/net/batman-adv/netlink.c | 1
net/net/batman-adv/trace.h | 2 -
net/net/batman-adv/types.h | 39 --------------------------------
5 files changed, 2 insertions(+), 43 deletions(-)
master: difference between net-next and batadv master
-----------------------------------------------------
netnext/net/batman-adv/netlink.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
master: headers
---------------
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 636952ff..b97f7dda 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -8,6 +8,7 @@
#include "main.h" // IWYU pragma: keep
#include <linux/atomic.h>
+#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/container_of.h>
#include <linux/errno.h>
master: sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
---------------------------------------------------------------------------
/home/build_test/build_env/tmp.YlXM366RUu/net/batman-adv/bat_v_elp.c: note: in included file:
./include/linux/ethtool.h:148:38: warning: nested flexible array
maint: sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
---------------------------------------------------------------------------
/home/build_test/build_env/tmp.YlXM366RUu/net/batman-adv/bat_v_elp.c: note: in included file:
./include/linux/ethtool.h:148:38: warning: nested flexible array
/home/build_test/build_env/tmp.YlXM366RUu/net/batman-adv/bat_v_elp.c:128:35: warning: using sizeof on a flexible structure
Statistics
==========
maint
-----
Failed tests: 17
Started build tests: 168
Tested Linux versions: 9
Tested configs: 99
master
------
Failed tests: 22
Started build tests: 165
Tested Linux versions: 9
Tested configs: 94
1
0
[linux-next] LinuxNextTracking branch, master, updated. next-20221108
by batmanï¼ open-mesh.org 08 Nov '22
by batmanï¼ open-mesh.org 08 Nov '22
08 Nov '22
The following commit has been merged in the master branch:
commit 20b0b53aca436af9fece9428ca3ab7c7b9cf4583
Author: Jakub Kicinski <kuba(a)kernel.org>
Date: Fri Nov 4 12:13:33 2022 -0700
genetlink: introduce split op representation
We currently have two forms of operations - small ops and "full" ops
(or just ops). The former does not have pointers for some of the less
commonly used features (namely dump start/done and policy).
The "full" ops, however, still don't contain all the necessary
information. In particular the policy is per command ID, while
do and dump often accept different attributes. It's also not
possible to define different pre_doit and post_doit callbacks
for different commands within the family.
At the same time a lot of commands do not support dumping and
therefore all the dump-related information is wasted space.
Create a new command representation which can hold info about
a do implementation or a dump implementation, but not both at
the same time.
Use this new representation on the command execution path
(genl_family_rcv_msg) as we either run a do or a dump and
don't have to create a "full" op there.
Signed-off-by: Jakub Kicinski <kuba(a)kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller(a)intel.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 81180fc6526a..4be7989c451b 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -18,7 +18,7 @@ struct genl_multicast_group {
u8 flags;
};
-struct genl_ops;
+struct genl_split_ops;
struct genl_info;
/**
@@ -66,10 +66,10 @@ struct genl_family {
u8 n_mcgrps;
u8 resv_start_op;
const struct nla_policy *policy;
- int (*pre_doit)(const struct genl_ops *ops,
+ int (*pre_doit)(const struct genl_split_ops *ops,
struct sk_buff *skb,
struct genl_info *info);
- void (*post_doit)(const struct genl_ops *ops,
+ void (*post_doit)(const struct genl_split_ops *ops,
struct sk_buff *skb,
struct genl_info *info);
const struct genl_ops * ops;
@@ -182,6 +182,58 @@ struct genl_ops {
u8 validate;
};
+/**
+ * struct genl_split_ops - generic netlink operations (do/dump split version)
+ * @cmd: command identifier
+ * @internal_flags: flags used by the family
+ * @flags: GENL_* flags (%GENL_ADMIN_PERM or %GENL_UNS_ADMIN_PERM)
+ * @validate: validation flags from enum genl_validate_flags
+ * @policy: netlink policy (takes precedence over family policy)
+ * @maxattr: maximum number of attributes supported
+ *
+ * Do callbacks:
+ * @pre_doit: called before an operation's @doit callback, it may
+ * do additional, common, filtering and return an error
+ * @doit: standard command callback
+ * @post_doit: called after an operation's @doit callback, it may
+ * undo operations done by pre_doit, for example release locks
+ *
+ * Dump callbacks:
+ * @start: start callback for dumps
+ * @dumpit: callback for dumpers
+ * @done: completion callback for dumps
+ *
+ * Do callbacks can be used if %GENL_CMD_CAP_DO is set in @flags.
+ * Dump callbacks can be used if %GENL_CMD_CAP_DUMP is set in @flags.
+ * Exactly one of those flags must be set.
+ */
+struct genl_split_ops {
+ union {
+ struct {
+ int (*pre_doit)(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
+ struct genl_info *info);
+ int (*doit)(struct sk_buff *skb,
+ struct genl_info *info);
+ void (*post_doit)(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
+ struct genl_info *info);
+ };
+ struct {
+ int (*start)(struct netlink_callback *cb);
+ int (*dumpit)(struct sk_buff *skb,
+ struct netlink_callback *cb);
+ int (*done)(struct netlink_callback *cb);
+ };
+ };
+ const struct nla_policy *policy;
+ unsigned int maxattr;
+ u8 cmd;
+ u8 internal_flags;
+ u8 flags;
+ u8 validate;
+};
+
/**
* struct genl_dumpit_info - info that is available during dumpit op call
* @family: generic netlink family - for internal genl code usage
@@ -190,7 +242,7 @@ struct genl_ops {
*/
struct genl_dumpit_info {
const struct genl_family *family;
- struct genl_ops op;
+ struct genl_split_ops op;
struct nlattr **attrs;
};
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index a5e4a4e976cf..ad5714f737be 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -1267,7 +1267,8 @@ batadv_get_vlan_from_info(struct batadv_priv *bat_priv, struct net *net,
*
* Return: 0 on success or negative error number in case of failure
*/
-static int batadv_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
+static int batadv_pre_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
struct genl_info *info)
{
struct net *net = genl_info_net(info);
@@ -1332,7 +1333,8 @@ err_put_softif:
* @skb: Netlink message with request data
* @info: receiver information
*/
-static void batadv_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
+static void batadv_post_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
struct genl_info *info)
{
struct batadv_hard_iface *hard_iface;
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 2dcf2bcc3527..40fcdded57e6 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -770,7 +770,7 @@ devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
#define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3)
#define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4)
-static int devlink_nl_pre_doit(const struct genl_ops *ops,
+static int devlink_nl_pre_doit(const struct genl_split_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
struct devlink_linecard *linecard;
@@ -828,7 +828,7 @@ unlock:
return err;
}
-static void devlink_nl_post_doit(const struct genl_ops *ops,
+static void devlink_nl_post_doit(const struct genl_split_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
struct devlink_linecard *linecard;
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 11aa6e8a3098..5a782d1d8fd3 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -1620,7 +1620,7 @@ static const struct genl_small_ops dropmon_ops[] = {
},
};
-static int net_dm_nl_pre_doit(const struct genl_ops *ops,
+static int net_dm_nl_pre_doit(const struct genl_split_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
mutex_lock(&net_dm_mutex);
@@ -1628,7 +1628,7 @@ static int net_dm_nl_pre_doit(const struct genl_ops *ops,
return 0;
}
-static void net_dm_nl_post_doit(const struct genl_ops *ops,
+static void net_dm_nl_post_doit(const struct genl_split_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
mutex_unlock(&net_dm_mutex);
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 38c4f3cb010e..b33d1b5eda87 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -2157,7 +2157,8 @@ static int nl802154_del_llsec_seclevel(struct sk_buff *skb,
#define NL802154_FLAG_CHECK_NETDEV_UP 0x08
#define NL802154_FLAG_NEED_WPAN_DEV 0x10
-static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
+static int nl802154_pre_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
struct genl_info *info)
{
struct cfg802154_registered_device *rdev;
@@ -2219,7 +2220,8 @@ static int nl802154_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
return 0;
}
-static void nl802154_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
+static void nl802154_post_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
struct genl_info *info)
{
if (info->user_ptr[1]) {
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 0a7a856e9ce0..c66299740c05 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -189,6 +189,51 @@ static int genl_get_cmd(u32 cmd, const struct genl_family *family,
return genl_get_cmd_small(cmd, family, op);
}
+static void
+genl_cmd_full_to_split(struct genl_split_ops *op,
+ const struct genl_family *family,
+ const struct genl_ops *full, u8 flags)
+{
+ if (flags & GENL_CMD_CAP_DUMP) {
+ op->start = full->start;
+ op->dumpit = full->dumpit;
+ op->done = full->done;
+ } else {
+ op->pre_doit = family->pre_doit;
+ op->doit = full->doit;
+ op->post_doit = family->post_doit;
+ }
+
+ op->policy = full->policy;
+ op->maxattr = full->maxattr;
+
+ op->cmd = full->cmd;
+ op->internal_flags = full->internal_flags;
+ op->flags = full->flags;
+ op->validate = full->validate;
+
+ /* Make sure flags include the GENL_CMD_CAP_DO / GENL_CMD_CAP_DUMP */
+ op->flags |= flags;
+}
+
+static int
+genl_get_cmd_split(u32 cmd, u8 flags, const struct genl_family *family,
+ struct genl_split_ops *op)
+{
+ struct genl_ops full;
+ int err;
+
+ err = genl_get_cmd(cmd, family, &full);
+ if (err) {
+ memset(op, 0, sizeof(*op));
+ return err;
+ }
+
+ genl_cmd_full_to_split(op, family, &full, flags);
+
+ return 0;
+}
+
static void genl_get_cmd_by_index(unsigned int i,
const struct genl_family *family,
struct genl_ops *op)
@@ -544,7 +589,7 @@ static struct nlattr **
genl_family_rcv_msg_attrs_parse(const struct genl_family *family,
struct nlmsghdr *nlh,
struct netlink_ext_ack *extack,
- const struct genl_ops *ops,
+ const struct genl_split_ops *ops,
int hdrlen,
enum genl_validate_flags no_strict_flag)
{
@@ -580,18 +625,19 @@ struct genl_start_context {
const struct genl_family *family;
struct nlmsghdr *nlh;
struct netlink_ext_ack *extack;
- const struct genl_ops *ops;
+ const struct genl_split_ops *ops;
int hdrlen;
};
static int genl_start(struct netlink_callback *cb)
{
struct genl_start_context *ctx = cb->data;
- const struct genl_ops *ops = ctx->ops;
+ const struct genl_split_ops *ops;
struct genl_dumpit_info *info;
struct nlattr **attrs = NULL;
int rc = 0;
+ ops = ctx->ops;
if (ops->validate & GENL_DONT_VALIDATE_DUMP)
goto no_attrs;
@@ -633,7 +679,7 @@ no_attrs:
static int genl_lock_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
{
- const struct genl_ops *ops = &genl_dumpit_info(cb)->op;
+ const struct genl_split_ops *ops = &genl_dumpit_info(cb)->op;
int rc;
genl_lock();
@@ -645,7 +691,7 @@ static int genl_lock_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
static int genl_lock_done(struct netlink_callback *cb)
{
const struct genl_dumpit_info *info = genl_dumpit_info(cb);
- const struct genl_ops *ops = &info->op;
+ const struct genl_split_ops *ops = &info->op;
int rc = 0;
if (ops->done) {
@@ -661,7 +707,7 @@ static int genl_lock_done(struct netlink_callback *cb)
static int genl_parallel_done(struct netlink_callback *cb)
{
const struct genl_dumpit_info *info = genl_dumpit_info(cb);
- const struct genl_ops *ops = &info->op;
+ const struct genl_split_ops *ops = &info->op;
int rc = 0;
if (ops->done)
@@ -675,7 +721,7 @@ static int genl_family_rcv_msg_dumpit(const struct genl_family *family,
struct sk_buff *skb,
struct nlmsghdr *nlh,
struct netlink_ext_ack *extack,
- const struct genl_ops *ops,
+ const struct genl_split_ops *ops,
int hdrlen, struct net *net)
{
struct genl_start_context ctx;
@@ -721,7 +767,7 @@ static int genl_family_rcv_msg_doit(const struct genl_family *family,
struct sk_buff *skb,
struct nlmsghdr *nlh,
struct netlink_ext_ack *extack,
- const struct genl_ops *ops,
+ const struct genl_split_ops *ops,
int hdrlen, struct net *net)
{
struct nlattr **attrbuf;
@@ -747,16 +793,16 @@ static int genl_family_rcv_msg_doit(const struct genl_family *family,
genl_info_net_set(&info, net);
memset(&info.user_ptr, 0, sizeof(info.user_ptr));
- if (family->pre_doit) {
- err = family->pre_doit(ops, skb, &info);
+ if (ops->pre_doit) {
+ err = ops->pre_doit(ops, skb, &info);
if (err)
goto out;
}
err = ops->doit(skb, &info);
- if (family->post_doit)
- family->post_doit(ops, skb, &info);
+ if (ops->post_doit)
+ ops->post_doit(ops, skb, &info);
out:
genl_family_rcv_msg_attrs_free(attrbuf);
@@ -801,8 +847,9 @@ static int genl_family_rcv_msg(const struct genl_family *family,
{
struct net *net = sock_net(skb->sk);
struct genlmsghdr *hdr = nlmsg_data(nlh);
- struct genl_ops op;
+ struct genl_split_ops op;
int hdrlen;
+ u8 flags;
/* this family doesn't exist in this netns */
if (!family->netnsok && !net_eq(net, &init_net))
@@ -815,7 +862,9 @@ static int genl_family_rcv_msg(const struct genl_family *family,
if (genl_header_check(family, nlh, hdr, extack))
return -EINVAL;
- if (genl_get_cmd(hdr->cmd, family, &op))
+ flags = (nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP ?
+ GENL_CMD_CAP_DUMP : GENL_CMD_CAP_DO;
+ if (genl_get_cmd_split(hdr->cmd, flags, family, &op))
return -EOPNOTSUPP;
if ((op.flags & GENL_ADMIN_PERM) &&
@@ -826,7 +875,7 @@ static int genl_family_rcv_msg(const struct genl_family *family,
!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN))
return -EPERM;
- if ((nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP)
+ if (flags & GENL_CMD_CAP_DUMP)
return genl_family_rcv_msg_dumpit(family, skb, nlh, extack,
&op, hdrlen, net);
else
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 148f66edb015..1ad0326ff4dc 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -16140,7 +16140,8 @@ static u32 nl80211_internal_flags[] = {
#undef SELECTOR
};
-static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
+static int nl80211_pre_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = NULL;
@@ -16241,7 +16242,8 @@ out_unlock:
return err;
}
-static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
+static void nl80211_post_doit(const struct genl_split_ops *ops,
+ struct sk_buff *skb,
struct genl_info *info)
{
u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
--
LinuxNextTracking
1
0
[linux-next] LinuxNextTracking branch, master, updated. next-20221108
by batmanï¼ open-mesh.org 08 Nov '22
by batmanï¼ open-mesh.org 08 Nov '22
08 Nov '22
The following commit has been merged in the master branch:
commit f18e54d62d6e085d67590b209a96424088ddd596
Merge: bd759e6f689a9fa94c9b4d288133d70beb1d624f e0a37003ff0beed62e85a00e313b21764c5f1d4f
Author: Stephen Rothwell <sfr(a)canb.auug.org.au>
Date: Tue Nov 8 15:10:20 2022 +1100
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git
diff --combined Documentation/admin-guide/kernel-parameters.txt
index 4f14ae738540,78493797460f..10c7928f9e8c
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@@ -703,17 -703,6 +703,17 @@@
condev= [HW,S390] console device
conmode=
+ con3215_drop= [S390] 3215 console drop mode.
+ Format: y|n|Y|N|1|0
+ When set to true, drop data on the 3215 console when
+ the console buffer is full. In this case the
+ operator using a 3270 terminal emulator (for example
+ x3270) does not have to enter the clear key for the
+ console output to advance and the kernel to continue.
+ This leads to a much faster boot time when a 3270
+ terminal emulator is active. If no 3270 terminal
+ emulator is used, this parameter has no effect.
+
console= [KNL] Output console device and options.
tty<n> Use the virtual console device <n>.
@@@ -4577,17 -4566,15 +4577,15 @@@
ramdisk_start= [RAM] RAM disk image start address
- random.trust_cpu={on,off}
- [KNL] Enable or disable trusting the use of the
- CPU's random number generator (if available) to
- fully seed the kernel's CRNG. Default is controlled
- by CONFIG_RANDOM_TRUST_CPU.
-
- random.trust_bootloader={on,off}
- [KNL] Enable or disable trusting the use of a
- seed passed by the bootloader (if available) to
- fully seed the kernel's CRNG. Default is controlled
- by CONFIG_RANDOM_TRUST_BOOTLOADER.
+ random.trust_cpu=off
+ [KNL] Disable trusting the use of the CPU's
+ random number generator (if available) to
+ initialize the kernel's RNG.
+
+ random.trust_bootloader=off
+ [KNL] Disable trusting the use of the a seed
+ passed by the bootloader (if available) to
+ initialize the kernel's RNG.
randomize_kstack_offset=
[KNL] Enable or disable kernel stack offset
@@@ -5093,11 -5080,6 +5091,11 @@@
rcupdate.rcu_cpu_stall_timeout to be used (after
conversion from seconds to milliseconds).
+ rcupdate.rcu_cpu_stall_cputime= [KNL]
+ Provide statistics on the cputime and count of
+ interrupts and tasks during the second half of
+ rcu stall timeout.
+
rcupdate.rcu_expedited= [KNL]
Use expedited grace-period primitives, for
example, synchronize_rcu_expedited() instead
diff --combined arch/s390/configs/debug_defconfig
index e33dc2d6fd04,2bb3469092f0..6ec8412415f3
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@@ -573,8 -573,6 +573,6 @@@ CONFIG_VIRTIO_CONSOLE=
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_HANGCHECK_TIMER=m
CONFIG_TN3270_FS=y
- # CONFIG_RANDOM_TRUST_CPU is not set
- # CONFIG_RANDOM_TRUST_BOOTLOADER is not set
CONFIG_PPS=m
# CONFIG_PTP_1588_CLOCK is not set
# CONFIG_HWMON is not set
@@@ -723,42 -721,52 +721,42 @@@ CONFIG_CRYPTO_ECDSA=
CONFIG_CRYPTO_ECRDSA=m
CONFIG_CRYPTO_SM2=m
CONFIG_CRYPTO_CURVE25519=m
-CONFIG_CRYPTO_GCM=y
-CONFIG_CRYPTO_CHACHA20POLY1305=m
-CONFIG_CRYPTO_AEGIS128=m
-CONFIG_CRYPTO_SEQIV=y
-CONFIG_CRYPTO_CFB=m
-CONFIG_CRYPTO_LRW=m
-CONFIG_CRYPTO_PCBC=m
-CONFIG_CRYPTO_KEYWRAP=m
-CONFIG_CRYPTO_ADIANTUM=m
-CONFIG_CRYPTO_HCTR2=m
-CONFIG_CRYPTO_XCBC=m
-CONFIG_CRYPTO_VMAC=m
-CONFIG_CRYPTO_CRC32=m
-CONFIG_CRYPTO_CRC32_S390=y
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_SHA512_S390=m
-CONFIG_CRYPTO_SHA1_S390=m
-CONFIG_CRYPTO_SHA256_S390=m
-CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SHA3_256_S390=m
-CONFIG_CRYPTO_SHA3_512_S390=m
-CONFIG_CRYPTO_SM3_GENERIC=m
-CONFIG_CRYPTO_WP512=m
-CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_AES_TI=m
-CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_ANUBIS=m
-CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
-CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_CRYPTO_SEED=m
-CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SM4_GENERIC=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_ADIANTUM=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_CFB=m
+CONFIG_CRYPTO_HCTR2=m
+CONFIG_CRYPTO_KEYWRAP=m
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_AEGIS128=m
+CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_GCM=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3_GENERIC=m
+CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_842=m
CONFIG_CRYPTO_LZ4=m
CONFIG_CRYPTO_LZ4HC=m
@@@ -769,16 -777,6 +767,16 @@@ CONFIG_CRYPTO_USER_API_SKCIPHER=
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
CONFIG_CRYPTO_STATS=y
+CONFIG_CRYPTO_CRC32_S390=y
+CONFIG_CRYPTO_SHA512_S390=m
+CONFIG_CRYPTO_SHA1_S390=m
+CONFIG_CRYPTO_SHA256_S390=m
+CONFIG_CRYPTO_SHA3_256_S390=m
+CONFIG_CRYPTO_SHA3_512_S390=m
+CONFIG_CRYPTO_GHASH_S390=m
+CONFIG_CRYPTO_AES_S390=m
+CONFIG_CRYPTO_DES_S390=m
+CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_ZCRYPT=m
CONFIG_PKEY=m
CONFIG_CRYPTO_PAES_S390=m
diff --combined arch/s390/configs/defconfig
index 9cc8f024f3df,366bf3fd0208..8f1cb8cb3b4f
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@@ -563,8 -563,6 +563,6 @@@ CONFIG_VIRTIO_CONSOLE=
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_HANGCHECK_TIMER=m
CONFIG_TN3270_FS=y
- # CONFIG_RANDOM_TRUST_CPU is not set
- # CONFIG_RANDOM_TRUST_BOOTLOADER is not set
# CONFIG_PTP_1588_CLOCK is not set
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
@@@ -707,43 -705,53 +705,43 @@@ CONFIG_CRYPTO_ECDSA=
CONFIG_CRYPTO_ECRDSA=m
CONFIG_CRYPTO_SM2=m
CONFIG_CRYPTO_CURVE25519=m
-CONFIG_CRYPTO_GCM=y
-CONFIG_CRYPTO_CHACHA20POLY1305=m
-CONFIG_CRYPTO_AEGIS128=m
-CONFIG_CRYPTO_SEQIV=y
-CONFIG_CRYPTO_CFB=m
-CONFIG_CRYPTO_LRW=m
-CONFIG_CRYPTO_OFB=m
-CONFIG_CRYPTO_PCBC=m
-CONFIG_CRYPTO_KEYWRAP=m
-CONFIG_CRYPTO_ADIANTUM=m
-CONFIG_CRYPTO_HCTR2=m
-CONFIG_CRYPTO_XCBC=m
-CONFIG_CRYPTO_VMAC=m
-CONFIG_CRYPTO_CRC32=m
-CONFIG_CRYPTO_CRC32_S390=y
-CONFIG_CRYPTO_MD4=m
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_SHA512_S390=m
-CONFIG_CRYPTO_SHA1_S390=m
-CONFIG_CRYPTO_SHA256_S390=m
-CONFIG_CRYPTO_SHA3=m
-CONFIG_CRYPTO_SHA3_256_S390=m
-CONFIG_CRYPTO_SHA3_512_S390=m
-CONFIG_CRYPTO_SM3_GENERIC=m
-CONFIG_CRYPTO_WP512=m
-CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_AES_TI=m
-CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_ANUBIS=m
-CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_DES=m
-CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
-CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_CRYPTO_SEED=m
-CONFIG_CRYPTO_ARIA=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SM4_GENERIC=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_ADIANTUM=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_CFB=m
+CONFIG_CRYPTO_HCTR2=m
+CONFIG_CRYPTO_KEYWRAP=m
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_OFB=m
+CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_AEGIS128=m
+CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_GCM=y
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_SM3_GENERIC=m
+CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_CRC32=m
CONFIG_CRYPTO_842=m
CONFIG_CRYPTO_LZ4=m
CONFIG_CRYPTO_LZ4HC=m
@@@ -754,16 -762,6 +752,16 @@@ CONFIG_CRYPTO_USER_API_SKCIPHER=
CONFIG_CRYPTO_USER_API_RNG=m
CONFIG_CRYPTO_USER_API_AEAD=m
CONFIG_CRYPTO_STATS=y
+CONFIG_CRYPTO_CRC32_S390=y
+CONFIG_CRYPTO_SHA512_S390=m
+CONFIG_CRYPTO_SHA1_S390=m
+CONFIG_CRYPTO_SHA256_S390=m
+CONFIG_CRYPTO_SHA3_256_S390=m
+CONFIG_CRYPTO_SHA3_512_S390=m
+CONFIG_CRYPTO_GHASH_S390=m
+CONFIG_CRYPTO_AES_S390=m
+CONFIG_CRYPTO_DES_S390=m
+CONFIG_CRYPTO_CHACHA_S390=m
CONFIG_ZCRYPT=m
CONFIG_PKEY=m
CONFIG_CRYPTO_PAES_S390=m
diff --combined arch/x86/kernel/cpu/common.c
index 423a760fa9de,3f66dd03c091..cd129481fa3c
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@@ -22,9 -22,9 +22,9 @@@
#include <linux/io.h>
#include <linux/syscore_ops.h>
#include <linux/pgtable.h>
+ #include <linux/stackprotector.h>
#include <asm/cmdline.h>
- #include <asm/stackprotector.h>
#include <asm/perf_event.h>
#include <asm/mmu_context.h>
#include <asm/doublefault.h>
@@@ -609,7 -609,6 +609,7 @@@ static __always_inline void setup_cet(s
if (!ibt_selftest()) {
pr_err("IBT selftest: Failed!\n");
+ wrmsrl(MSR_IA32_S_CET, 0);
setup_clear_cpu_cap(X86_FEATURE_IBT);
return;
}
@@@ -702,6 -701,16 +702,6 @@@ static const char *table_lookup_model(s
__u32 cpu_caps_cleared[NCAPINTS + NBUGINTS] __aligned(sizeof(unsigned long));
__u32 cpu_caps_set[NCAPINTS + NBUGINTS] __aligned(sizeof(unsigned long));
-void load_percpu_segment(int cpu)
-{
-#ifdef CONFIG_X86_32
- loadsegment(fs, __KERNEL_PERCPU);
-#else
- __loadsegment_simple(gs, 0);
- wrmsrl(MSR_GS_BASE, cpu_kernelmode_gs_base(cpu));
-#endif
-}
-
#ifdef CONFIG_X86_32
/* The 32-bit entry code needs to find cpu_entry_area. */
DEFINE_PER_CPU(struct cpu_entry_area *, cpu_entry_area);
@@@ -729,45 -738,16 +729,45 @@@ void load_fixmap_gdt(int cpu
}
EXPORT_SYMBOL_GPL(load_fixmap_gdt);
-/*
- * Current gdt points %fs at the "master" per-cpu area: after this,
- * it's on the real one.
+/**
+ * switch_gdt_and_percpu_base - Switch to direct GDT and runtime per CPU base
+ * @cpu: The CPU number for which this is invoked
+ *
+ * Invoked during early boot to switch from early GDT and early per CPU to
+ * the direct GDT and the runtime per CPU area. On 32-bit the percpu base
+ * switch is implicit by loading the direct GDT. On 64bit this requires
+ * to update GSBASE.
*/
-void switch_to_new_gdt(int cpu)
+void __init switch_gdt_and_percpu_base(int cpu)
{
- /* Load the original GDT */
load_direct_gdt(cpu);
- /* Reload the per-cpu base */
- load_percpu_segment(cpu);
+
+#ifdef CONFIG_X86_64
+ /*
+ * No need to load %gs. It is already correct.
+ *
+ * Writing %gs on 64bit would zero GSBASE which would make any per
+ * CPU operation up to the point of the wrmsrl() fault.
+ *
+ * Set GSBASE to the new offset. Until the wrmsrl() happens the
+ * early mapping is still valid. That means the GSBASE update will
+ * lose any prior per CPU data which was not copied over in
+ * setup_per_cpu_areas().
+ *
+ * This works even with stackprotector enabled because the
+ * per CPU stack canary is 0 in both per CPU areas.
+ */
+ wrmsrl(MSR_GS_BASE, cpu_kernelmode_gs_base(cpu));
+#else
+ /*
+ * %fs is already set to __KERNEL_PERCPU, but after switching GDT
+ * it is required to load FS again so that the 'hidden' part is
+ * updated from the new GDT. Up to this point the early per CPU
+ * translation is active. Any content of the early per CPU data
+ * which was not copied over in setup_per_cpu_areas() is lost.
+ */
+ loadsegment(fs, __KERNEL_PERCPU);
+#endif
}
static const struct cpu_dev *cpu_devs[X86_VENDOR_NUM] = {};
@@@ -2013,18 -1993,27 +2013,18 @@@ static __init int setup_clearcpuid(cha
}
__setup("clearcpuid=", setup_clearcpuid);
+DEFINE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot) = {
+ .current_task = &init_task,
+ .preempt_count = INIT_PREEMPT_COUNT,
+ .top_of_stack = TOP_OF_INIT_STACK,
+};
+EXPORT_PER_CPU_SYMBOL(pcpu_hot);
+
#ifdef CONFIG_X86_64
DEFINE_PER_CPU_FIRST(struct fixed_percpu_data,
fixed_percpu_data) __aligned(PAGE_SIZE) __visible;
EXPORT_PER_CPU_SYMBOL_GPL(fixed_percpu_data);
-/*
- * The following percpu variables are hot. Align current_task to
- * cacheline size such that they fall in the same cacheline.
- */
-DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned =
- &init_task;
-EXPORT_PER_CPU_SYMBOL(current_task);
-
-DEFINE_PER_CPU(void *, hardirq_stack_ptr);
-DEFINE_PER_CPU(bool, hardirq_stack_inuse);
-
-DEFINE_PER_CPU(int, __preempt_count) = INIT_PREEMPT_COUNT;
-EXPORT_PER_CPU_SYMBOL(__preempt_count);
-
-DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) = TOP_OF_INIT_STACK;
-
static void wrmsrl_cstar(unsigned long val)
{
/*
@@@ -2075,6 -2064,20 +2075,6 @@@ void syscall_init(void
#else /* CONFIG_X86_64 */
-DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
-EXPORT_PER_CPU_SYMBOL(current_task);
-DEFINE_PER_CPU(int, __preempt_count) = INIT_PREEMPT_COUNT;
-EXPORT_PER_CPU_SYMBOL(__preempt_count);
-
-/*
- * On x86_32, vm86 modifies tss.sp0, so sp0 isn't a reliable way to find
- * the top of the kernel stack. Use an extra percpu variable to track the
- * top of the kernel stack directly.
- */
-DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) =
- (unsigned long)&init_thread_union + THREAD_SIZE;
-EXPORT_PER_CPU_SYMBOL(cpu_current_top_of_stack);
-
#ifdef CONFIG_STACKPROTECTOR
DEFINE_PER_CPU(unsigned long, __stack_chk_guard);
EXPORT_PER_CPU_SYMBOL(__stack_chk_guard);
@@@ -2245,6 -2248,12 +2245,6 @@@ void cpu_init(void
boot_cpu_has(X86_FEATURE_TSC) || boot_cpu_has(X86_FEATURE_DE))
cr4_clear_bits(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
- /*
- * Initialize the per-CPU GDT with the boot GDT,
- * and set up the GDT descriptor:
- */
- switch_to_new_gdt(cpu);
-
if (IS_ENABLED(CONFIG_X86_64)) {
loadsegment(fs, 0);
memset(cur->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8);
diff --combined arch/x86/kernel/module.c
index 0142982e94c5,9f74b7d71a50..a3f8cdb80feb
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@@ -53,7 -53,7 +53,7 @@@ static unsigned long int get_module_loa
*/
if (module_load_offset == 0)
module_load_offset =
- (prandom_u32_max(1024) + 1) * PAGE_SIZE;
+ get_random_u32_between(1, 1024 + 1) * PAGE_SIZE;
mutex_unlock(&module_kaslr_mutex);
}
return module_load_offset;
@@@ -74,11 -74,10 +74,11 @@@ void *module_alloc(unsigned long size
return NULL;
p = __vmalloc_node_range(size, MODULE_ALIGN,
- MODULES_VADDR + get_module_load_offset(),
- MODULES_END, gfp_mask,
- PAGE_KERNEL, VM_DEFER_KMEMLEAK, NUMA_NO_NODE,
- __builtin_return_address(0));
+ MODULES_VADDR + get_module_load_offset(),
+ MODULES_END, gfp_mask, PAGE_KERNEL,
+ VM_FLUSH_RESET_PERMS | VM_DEFER_KMEMLEAK,
+ NUMA_NO_NODE, __builtin_return_address(0));
+
if (p && (kasan_alloc_module_shadow(p, size, gfp_mask) < 0)) {
vfree(p);
return NULL;
@@@ -254,8 -253,7 +254,8 @@@ int module_finalize(const Elf_Ehdr *hdr
{
const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL,
*para = NULL, *orc = NULL, *orc_ip = NULL,
- *retpolines = NULL, *returns = NULL, *ibt_endbr = NULL;
+ *retpolines = NULL, *returns = NULL, *ibt_endbr = NULL,
+ *calls = NULL, *cfi = NULL;
char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
@@@ -275,10 -273,6 +275,10 @@@
retpolines = s;
if (!strcmp(".return_sites", secstrings + s->sh_name))
returns = s;
+ if (!strcmp(".call_sites", secstrings + s->sh_name))
+ calls = s;
+ if (!strcmp(".cfi_sites", secstrings + s->sh_name))
+ cfi = s;
if (!strcmp(".ibt_endbr_seal", secstrings + s->sh_name))
ibt_endbr = s;
}
@@@ -291,22 -285,6 +291,22 @@@
void *pseg = (void *)para->sh_addr;
apply_paravirt(pseg, pseg + para->sh_size);
}
+ if (retpolines || cfi) {
+ void *rseg = NULL, *cseg = NULL;
+ unsigned int rsize = 0, csize = 0;
+
+ if (retpolines) {
+ rseg = (void *)retpolines->sh_addr;
+ rsize = retpolines->sh_size;
+ }
+
+ if (cfi) {
+ cseg = (void *)cfi->sh_addr;
+ csize = cfi->sh_size;
+ }
+
+ apply_fineibt(rseg, rseg + rsize, cseg, cseg + csize);
+ }
if (retpolines) {
void *rseg = (void *)retpolines->sh_addr;
apply_retpolines(rseg, rseg + retpolines->sh_size);
@@@ -320,21 -298,6 +320,21 @@@
void *aseg = (void *)alt->sh_addr;
apply_alternatives(aseg, aseg + alt->sh_size);
}
+ if (calls || para) {
+ struct callthunk_sites cs = {};
+
+ if (calls) {
+ cs.call_start = (void *)calls->sh_addr;
+ cs.call_end = (void *)calls->sh_addr + calls->sh_size;
+ }
+
+ if (para) {
+ cs.pv_start = (void *)para->sh_addr;
+ cs.pv_end = (void *)para->sh_addr + para->sh_size;
+ }
+
+ callthunks_patch_module_calls(&cs, me);
+ }
if (ibt_endbr) {
void *iseg = (void *)ibt_endbr->sh_addr;
apply_ibt_endbr(iseg, iseg + ibt_endbr->sh_size);
diff --combined arch/x86/kernel/setup_percpu.c
index c2fc4c41c164,b26123c90b4f..c242dc47e9cb
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@@ -11,6 -11,7 +11,7 @@@
#include <linux/smp.h>
#include <linux/topology.h>
#include <linux/pfn.h>
+ #include <linux/stackprotector.h>
#include <asm/sections.h>
#include <asm/processor.h>
#include <asm/desc.h>
@@@ -21,8 -22,10 +22,7 @@@
#include <asm/proto.h>
#include <asm/cpumask.h>
#include <asm/cpu.h>
- #include <asm/stackprotector.h>
-DEFINE_PER_CPU_READ_MOSTLY(int, cpu_number);
-EXPORT_PER_CPU_SYMBOL(cpu_number);
-
#ifdef CONFIG_X86_64
#define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load)
#else
@@@ -169,7 -172,7 +169,7 @@@ void __init setup_per_cpu_areas(void
for_each_possible_cpu(cpu) {
per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu];
per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu);
- per_cpu(cpu_number, cpu) = cpu;
+ per_cpu(pcpu_hot.cpu_number, cpu) = cpu;
setup_percpu_segment(cpu);
/*
* Copy data used in early init routines from the
@@@ -208,7 -211,7 +208,7 @@@
* area. Reload any changed state for the boot CPU.
*/
if (!cpu)
- switch_to_new_gdt(cpu);
+ switch_gdt_and_percpu_base(cpu);
}
/* indicate the early static arrays will soon be gone */
diff --combined arch/x86/kernel/smpboot.c
index 87863a93e918,5a742b6ec46d..ed496d387517
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@@ -56,6 -56,7 +56,7 @@@
#include <linux/numa.h>
#include <linux/pgtable.h>
#include <linux/overflow.h>
+ #include <linux/stackprotector.h>
#include <asm/acpi.h>
#include <asm/desc.h>
@@@ -1046,7 -1047,7 +1047,7 @@@ int common_cpu_up(unsigned int cpu, str
/* Just in case we booted with a single CPU. */
alternatives_enable_smp();
- per_cpu(current_task, cpu) = idle;
+ per_cpu(pcpu_hot.current_task, cpu) = idle;
cpu_init_stack_canary(cpu, idle);
/* Initialize the interrupt stack(s) */
@@@ -1056,7 -1057,7 +1057,7 @@@
#ifdef CONFIG_X86_32
/* Stack for startup_32 can be just as for start_secondary onwards */
- per_cpu(cpu_current_top_of_stack, cpu) = task_top_of_stack(idle);
+ per_cpu(pcpu_hot.top_of_stack, cpu) = task_top_of_stack(idle);
#else
initial_gs = per_cpu_offset(cpu);
#endif
@@@ -1453,11 -1454,7 +1454,11 @@@ void arch_thaw_secondary_cpus_end(void
void __init native_smp_prepare_boot_cpu(void)
{
int me = smp_processor_id();
- switch_to_new_gdt(me);
+
+ /* SMP handles this from setup_per_cpu_areas() */
+ if (!IS_ENABLED(CONFIG_SMP))
+ switch_gdt_and_percpu_base(me);
+
/* already set me in cpu_online_mask in boot_cpu_init() */
cpumask_set_cpu(me, cpu_callout_mask);
cpu_set_state_online(me);
diff --combined arch/x86/xen/enlighten_pv.c
index 9b892079581b,745420853a7c..05170fc19083
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@@ -32,6 -32,7 +32,7 @@@
#include <linux/edd.h>
#include <linux/reboot.h>
#include <linux/virtio_anchor.h>
+ #include <linux/stackprotector.h>
#include <xen/xen.h>
#include <xen/events.h>
@@@ -64,7 -65,6 +65,6 @@@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/reboot.h>
- #include <asm/stackprotector.h>
#include <asm/hypervisor.h>
#include <asm/mach_traps.h>
#include <asm/mwait.h>
@@@ -1209,7 -1209,7 +1209,7 @@@ static void __init xen_setup_gdt(int cp
pv_ops.cpu.write_gdt_entry = xen_write_gdt_entry_boot;
pv_ops.cpu.load_gdt = xen_load_gdt_boot;
- switch_to_new_gdt(cpu);
+ switch_gdt_and_percpu_base(cpu);
pv_ops.cpu.write_gdt_entry = xen_write_gdt_entry;
pv_ops.cpu.load_gdt = xen_load_gdt;
diff --combined crypto/testmgr.c
index e2806ef044fd,b09b9408ec44..19639fb08c25
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@@ -855,9 -855,9 +855,9 @@@ static int prepare_keybuf(const u8 *key
/* Generate a random length in range [0, max_len], but prefer smaller values */
static unsigned int generate_random_length(unsigned int max_len)
{
- unsigned int len = prandom_u32_max(max_len + 1);
+ unsigned int len = get_random_u32_below(max_len + 1);
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
return len % 64;
case 1:
@@@ -874,14 -874,14 +874,14 @@@ static void flip_random_bit(u8 *buf, si
{
size_t bitpos;
- bitpos = prandom_u32_max(size * 8);
+ bitpos = get_random_u32_below(size * 8);
buf[bitpos / 8] ^= 1 << (bitpos % 8);
}
/* Flip a random byte in the given nonempty data buffer */
static void flip_random_byte(u8 *buf, size_t size)
{
- buf[prandom_u32_max(size)] ^= 0xff;
+ buf[get_random_u32_below(size)] ^= 0xff;
}
/* Sometimes make some random changes to the given nonempty data buffer */
@@@ -891,15 -891,15 +891,15 @@@ static void mutate_buffer(u8 *buf, size
size_t i;
/* Sometimes flip some bits */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size * 8);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size * 8);
for (i = 0; i < num_flips; i++)
flip_random_bit(buf, size);
}
/* Sometimes flip some bytes */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size);
for (i = 0; i < num_flips; i++)
flip_random_byte(buf, size);
}
@@@ -915,11 -915,11 +915,11 @@@ static void generate_random_bytes(u8 *b
if (count == 0)
return;
- switch (prandom_u32_max(8)) { /* Choose a generation strategy */
+ switch (get_random_u32_below(8)) { /* Choose a generation strategy */
case 0:
case 1:
/* All the same byte, plus optional mutations */
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
b = 0x00;
break;
@@@ -959,24 -959,24 +959,24 @@@ static char *generate_random_sgl_divisi
unsigned int this_len;
const char *flushtype_str;
- if (div == &divs[max_divs - 1] || prandom_u32_max(2) == 0)
+ if (div == &divs[max_divs - 1] || get_random_u32_below(2) == 0)
this_len = remaining;
else
- this_len = 1 + prandom_u32_max(remaining);
+ this_len = get_random_u32_between(1, remaining + 1);
div->proportion_of_total = this_len;
- if (prandom_u32_max(4) == 0)
- div->offset = (PAGE_SIZE - 128) + prandom_u32_max(128);
- else if (prandom_u32_max(2) == 0)
- div->offset = prandom_u32_max(32);
+ if (get_random_u32_below(4) == 0)
+ div->offset = get_random_u32_between(PAGE_SIZE - 128, PAGE_SIZE);
+ else if (get_random_u32_below(2) == 0)
+ div->offset = get_random_u32_below(32);
else
- div->offset = prandom_u32_max(PAGE_SIZE);
- if (prandom_u32_max(8) == 0)
+ div->offset = get_random_u32_below(PAGE_SIZE);
+ if (get_random_u32_below(8) == 0)
div->offset_relative_to_alignmask = true;
div->flush_type = FLUSH_TYPE_NONE;
if (gen_flushes) {
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
div->flush_type = FLUSH_TYPE_REIMPORT;
break;
@@@ -988,7 -988,7 +988,7 @@@
if (div->flush_type != FLUSH_TYPE_NONE &&
!(req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0)
+ get_random_u32_below(2) == 0)
div->nosimd = true;
switch (div->flush_type) {
@@@ -1035,7 -1035,7 +1035,7 @@@ static void generate_random_testvec_con
p += scnprintf(p, end - p, "random:");
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
case 1:
cfg->inplace_mode = OUT_OF_PLACE;
@@@ -1050,12 -1050,12 +1050,12 @@@
break;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
cfg->req_flags |= CRYPTO_TFM_REQ_MAY_SLEEP;
p += scnprintf(p, end - p, " may_sleep");
}
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
cfg->finalization_type = FINALIZATION_TYPE_FINAL;
p += scnprintf(p, end - p, " use_final");
@@@ -1071,7 -1071,7 +1071,7 @@@
}
if (!(cfg->req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0) {
+ get_random_u32_below(2) == 0) {
cfg->nosimd = true;
p += scnprintf(p, end - p, " nosimd");
}
@@@ -1084,7 -1084,7 +1084,7 @@@
cfg->req_flags);
p += scnprintf(p, end - p, "]");
- if (cfg->inplace_mode == OUT_OF_PLACE && prandom_u32_max(2) == 0) {
+ if (cfg->inplace_mode == OUT_OF_PLACE && get_random_u32_below(2) == 0) {
p += scnprintf(p, end - p, " dst_divs=[");
p = generate_random_sgl_divisions(cfg->dst_divs,
ARRAY_SIZE(cfg->dst_divs),
@@@ -1093,13 -1093,13 +1093,13 @@@
p += scnprintf(p, end - p, "]");
}
- if (prandom_u32_max(2) == 0) {
- cfg->iv_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->iv_offset = get_random_u32_between(1, MAX_ALGAPI_ALIGNMASK + 1);
p += scnprintf(p, end - p, " iv_offset=%u", cfg->iv_offset);
}
- if (prandom_u32_max(2) == 0) {
- cfg->key_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->key_offset = get_random_u32_between(1, MAX_ALGAPI_ALIGNMASK + 1);
p += scnprintf(p, end - p, " key_offset=%u", cfg->key_offset);
}
@@@ -1652,8 -1652,8 +1652,8 @@@ static void generate_random_hash_testve
vec->ksize = 0;
if (maxkeysize) {
vec->ksize = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->ksize = 1 + prandom_u32_max(maxkeysize);
+ if (get_random_u32_below(4) == 0)
+ vec->ksize = get_random_u32_between(1, maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->ksize);
vec->setkey_error = crypto_shash_setkey(desc->tfm, vec->key,
@@@ -2218,13 -2218,13 +2218,13 @@@ static void mutate_aead_message(struct
const unsigned int aad_tail_size = aad_iv ? ivsize : 0;
const unsigned int authsize = vec->clen - vec->plen;
- if (prandom_u32_max(2) == 0 && vec->alen > aad_tail_size) {
+ if (get_random_u32_below(2) == 0 && vec->alen > aad_tail_size) {
/* Mutate the AAD */
flip_random_bit((u8 *)vec->assoc, vec->alen - aad_tail_size);
- if (prandom_u32_max(2) == 0)
+ if (get_random_u32_below(2) == 0)
return;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
/* Mutate auth tag (assuming it's at the end of ciphertext) */
flip_random_bit((u8 *)vec->ctext + vec->plen, authsize);
} else {
@@@ -2249,7 -2249,7 +2249,7 @@@ static void generate_aead_message(struc
const unsigned int ivsize = crypto_aead_ivsize(tfm);
const unsigned int authsize = vec->clen - vec->plen;
const bool inauthentic = (authsize >= MIN_COLLISION_FREE_AUTHSIZE) &&
- (prefer_inauthentic || prandom_u32_max(4) == 0);
+ (prefer_inauthentic || get_random_u32_below(4) == 0);
/* Generate the AAD. */
generate_random_bytes((u8 *)vec->assoc, vec->alen);
@@@ -2257,7 -2257,7 +2257,7 @@@
/* Avoid implementation-defined behavior. */
memcpy((u8 *)vec->assoc + vec->alen - ivsize, vec->iv, ivsize);
- if (inauthentic && prandom_u32_max(2) == 0) {
+ if (inauthentic && get_random_u32_below(2) == 0) {
/* Generate a random ciphertext. */
generate_random_bytes((u8 *)vec->ctext, vec->clen);
} else {
@@@ -2321,8 -2321,8 +2321,8 @@@ static void generate_random_aead_testve
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_aead_setkey(tfm, vec->key, vec->klen);
@@@ -2331,8 -2331,8 +2331,8 @@@
/* Tag length: in [0, maxauthsize], but usually choose maxauthsize */
authsize = maxauthsize;
- if (prandom_u32_max(4) == 0)
- authsize = prandom_u32_max(maxauthsize + 1);
+ if (get_random_u32_below(4) == 0)
+ authsize = get_random_u32_below(maxauthsize + 1);
if (prefer_inauthentic && authsize < MIN_COLLISION_FREE_AUTHSIZE)
authsize = MIN_COLLISION_FREE_AUTHSIZE;
if (WARN_ON(authsize > maxdatasize))
@@@ -2342,7 -2342,7 +2342,7 @@@
/* AAD, plaintext, and ciphertext lengths */
total_len = generate_random_length(maxdatasize);
- if (prandom_u32_max(4) == 0)
+ if (get_random_u32_below(4) == 0)
vec->alen = 0;
else
vec->alen = generate_random_length(total_len);
@@@ -2958,8 -2958,8 +2958,8 @@@ static void generate_random_cipher_test
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_skcipher_setkey(tfm, vec->key, vec->klen);
@@@ -4712,12 -4712,6 +4712,12 @@@ static const struct alg_test_desc alg_t
.alg = "cts(cbc(paes))",
.test = alg_test_null,
.fips_allowed = 1,
+ }, {
+ .alg = "cts(cbc(sm4))",
+ .test = alg_test_skcipher,
+ .suite = {
+ .cipher = __VECS(sm4_cts_tv_template)
+ }
}, {
.alg = "curve25519",
.test = alg_test_kpp,
@@@ -5592,12 -5586,6 +5592,12 @@@
.suite = {
.hash = __VECS(aes_xcbc128_tv_template)
}
+ }, {
+ .alg = "xcbc(sm4)",
+ .test = alg_test_hash,
+ .suite = {
+ .hash = __VECS(sm4_xcbc128_tv_template)
+ }
}, {
.alg = "xchacha12",
.test = alg_test_skcipher,
@@@ -5652,13 -5640,6 +5652,13 @@@
.suite = {
.cipher = __VECS(serpent_xts_tv_template)
}
+ }, {
+ .alg = "xts(sm4)",
+ .generic_driver = "xts(ecb(sm4-generic))",
+ .test = alg_test_skcipher,
+ .suite = {
+ .cipher = __VECS(sm4_xts_tv_template)
+ }
}, {
.alg = "xts(twofish)",
.generic_driver = "xts(ecb(twofish-generic))",
diff --combined drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 1160723c9d2d,29d2459bcc90..be14fce52a5b
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@@ -2424,7 -2424,7 +2424,7 @@@ gen8_dispatch_bsd_engine(struct drm_i91
/* Check whether the file_priv has already selected one ring. */
if ((int)file_priv->bsd_engine < 0)
file_priv->bsd_engine =
- prandom_u32_max(num_vcs_engines(dev_priv));
+ get_random_u32_below(num_vcs_engines(dev_priv));
return file_priv->bsd_engine;
}
@@@ -2954,6 -2954,11 +2954,6 @@@ await_fence_array(struct i915_execbuffe
int err;
for (n = 0; n < eb->num_fences; n++) {
- struct drm_syncobj *syncobj;
- unsigned int flags;
-
- syncobj = ptr_unpack_bits(eb->fences[n].syncobj, &flags, 2);
-
if (!eb->fences[n].dma_fence)
continue;
diff --combined drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 0187bc72310d,45b605e32c87..85bfa6498f6c
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@@ -3471,9 -3471,9 +3471,9 @@@ logical_ring_default_vfuncs(struct inte
if (GRAPHICS_VER_FULL(engine->i915) >= IP_VER(12, 50)) {
if (intel_engine_has_preemption(engine))
- engine->emit_bb_start = gen125_emit_bb_start;
+ engine->emit_bb_start = xehp_emit_bb_start;
else
- engine->emit_bb_start = gen125_emit_bb_start_noarb;
+ engine->emit_bb_start = xehp_emit_bb_start_noarb;
} else {
if (intel_engine_has_preemption(engine))
engine->emit_bb_start = gen8_emit_bb_start;
@@@ -3689,7 -3689,7 +3689,7 @@@ static void virtual_engine_initial_hint
* NB This does not force us to execute on this engine, it will just
* typically be the first we inspect for submission.
*/
- swp = prandom_u32_max(ve->num_siblings);
+ swp = get_random_u32_below(ve->num_siblings);
if (swp)
swap(ve->siblings[swp], ve->siblings[0]);
}
diff --combined drivers/mmc/core/core.c
index cdbaeb389fce,a1efda85c6f2..1bb70d438d6c
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@@ -56,7 -56,7 +56,7 @@@ static const unsigned freqs[] = { 40000
/*
* Enabling software CRCs on the data blocks can be a significant (30%)
* performance cost, and for other reasons may not always be desired.
- * So we allow it it to be disabled.
+ * So we allow it to be disabled.
*/
bool use_spi_crc = 1;
module_param(use_spi_crc, bool, 0);
@@@ -97,8 -97,8 +97,8 @@@ static void mmc_should_fail_request(str
!should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
return;
- data->error = data_errors[prandom_u32_max(ARRAY_SIZE(data_errors))];
- data->bytes_xfered = prandom_u32_max(data->bytes_xfered >> 9) << 9;
+ data->error = data_errors[get_random_u32_below(ARRAY_SIZE(data_errors))];
+ data->bytes_xfered = get_random_u32_below(data->bytes_xfered >> 9) << 9;
}
#else /* CONFIG_FAIL_MMC_REQUEST */
@@@ -527,7 -527,7 +527,7 @@@ EXPORT_SYMBOL(mmc_cqe_post_req)
* mmc_cqe_recovery - Recover from CQE errors.
* @host: MMC host to recover
*
- * Recovery consists of stopping CQE, stopping eMMC, discarding the queue in
+ * Recovery consists of stopping CQE, stopping eMMC, discarding the queue
* in eMMC, and discarding the queue in CQE. CQE must call
* mmc_cqe_request_done() on all requests. An error is returned if the eMMC
* fails to discard its queue.
@@@ -1134,13 -1134,7 +1134,13 @@@ u32 mmc_select_voltage(struct mmc_host
mmc_power_cycle(host, ocr);
} else {
bit = fls(ocr) - 1;
- ocr &= 3 << bit;
+ /*
+ * The bit variable represents the highest voltage bit set in
+ * the OCR register.
+ * To keep a range of 2 values (e.g. 3.2V/3.3V and 3.3V/3.4V),
+ * we must shift the mask '3' with (bit - 1).
+ */
+ ocr &= 3 << (bit - 1);
if (bit != host->ios.vdd)
dev_warn(mmc_dev(host), "exceeding card's volts\n");
}
diff --combined drivers/mmc/host/dw_mmc.c
index d35607128322,6ef410053037..e4d09c439051
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@@ -1363,7 -1363,7 +1363,7 @@@ static void __dw_mci_start_request(stru
* is just about to roll over.
*
* We do this whole thing under spinlock and only if the
- * command hasn't already completed (indicating the the irq
+ * command hasn't already completed (indicating the irq
* already ran so we don't want the timeout).
*/
spin_lock_irqsave(&host->irq_lock, irqflags);
@@@ -1858,7 -1858,7 +1858,7 @@@ static void dw_mci_start_fault_timer(st
* Try to inject the error at random points during the data transfer.
*/
hrtimer_start(&host->fault_timer,
- ms_to_ktime(prandom_u32_max(25)),
+ ms_to_ktime(get_random_u32_below(25)),
HRTIMER_MODE_REL);
}
diff --combined fs/ceph/inode.c
index 7bff2855aab6,fb255988dee8..29a6629f6299
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@@ -126,7 -126,7 +126,7 @@@ const struct inode_operations ceph_file
.setattr = ceph_setattr,
.getattr = ceph_getattr,
.listxattr = ceph_listxattr,
- .get_acl = ceph_get_acl,
+ .get_inode_acl = ceph_get_acl,
.set_acl = ceph_set_acl,
};
@@@ -362,7 -362,7 +362,7 @@@ static int ceph_fill_fragtree(struct in
if (nsplits != ci->i_fragtree_nsplits) {
update = true;
} else if (nsplits) {
- i = prandom_u32_max(nsplits);
+ i = get_random_u32_below(nsplits);
id = le32_to_cpu(fragtree->splits[i].frag);
if (!__ceph_find_frag(ci, id))
update = true;
@@@ -2255,7 -2255,7 +2255,7 @@@ int ceph_setattr(struct user_namespace
err = __ceph_setattr(inode, attr);
if (err >= 0 && (attr->ia_valid & ATTR_MODE))
- err = posix_acl_chmod(&init_user_ns, inode, attr->ia_mode);
+ err = posix_acl_chmod(&init_user_ns, dentry, attr->ia_mode);
return err;
}
@@@ -2417,10 -2417,10 +2417,10 @@@ static int statx_to_caps(u32 want, umod
{
int mask = 0;
- if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME))
+ if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_AUTH_SHARED;
- if (want & (STATX_NLINK|STATX_CTIME)) {
+ if (want & (STATX_NLINK|STATX_CTIME|STATX_CHANGE_COOKIE)) {
/*
* The link count for directories depends on inode->i_subdirs,
* and that is only updated when Fs caps are held.
@@@ -2431,10 -2431,11 +2431,10 @@@
mask |= CEPH_CAP_LINK_SHARED;
}
- if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|
- STATX_BLOCKS))
+ if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|STATX_BLOCKS|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_FILE_SHARED;
- if (want & (STATX_CTIME))
+ if (want & (STATX_CTIME|STATX_CHANGE_COOKIE))
mask |= CEPH_CAP_XATTR_SHARED;
return mask;
@@@ -2477,11 -2478,6 +2477,11 @@@ int ceph_getattr(struct user_namespace
valid_mask |= STATX_BTIME;
}
+ if (request_mask & STATX_CHANGE_COOKIE) {
+ stat->change_cookie = inode_peek_iversion_raw(inode);
+ valid_mask |= STATX_CHANGE_COOKIE;
+ }
+
if (ceph_snap(inode) == CEPH_NOSNAP)
stat->dev = sb->s_dev;
else
@@@ -2496,7 -2492,7 +2496,7 @@@
struct inode *parent;
parent = ceph_lookup_inode(sb, ceph_ino(inode));
- if (!parent)
+ if (IS_ERR(parent))
return PTR_ERR(parent);
pci = ceph_inode(parent);
@@@ -2523,8 -2519,6 +2523,8 @@@
stat->nlink = 1 + 1 + ci->i_subdirs;
}
+ stat->attributes_mask |= STATX_ATTR_CHANGE_MONOTONIC;
+ stat->attributes |= STATX_ATTR_CHANGE_MONOTONIC;
stat->result_mask = request_mask & valid_mask;
return err;
}
diff --combined fs/ext4/ialloc.c
index 67a257a69758,9fc1af8e19a3..9aa8b18bdac1
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@@ -465,7 -465,7 +465,7 @@@ static int find_group_orlov(struct supe
ext4fs_dirhash(parent, qstr->name, qstr->len, &hinfo);
parent_group = hinfo.hash % ngroups;
} else
- parent_group = prandom_u32_max(ngroups);
+ parent_group = get_random_u32_below(ngroups);
for (i = 0; i < ngroups; i++) {
g = (parent_group + i) % ngroups;
get_orlov_stats(sb, g, flex_size, &stats);
@@@ -870,7 -870,7 +870,7 @@@ static int ext4_xattr_credits_for_new_i
struct super_block *sb = dir->i_sb;
int nblocks = 0;
#ifdef CONFIG_EXT4_FS_POSIX_ACL
- struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
+ struct posix_acl *p = get_inode_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(p))
return PTR_ERR(p);
diff --combined fs/ext4/super.c
index 7cdd2138c897,106fb06e24e8..63ef74eb8091
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@@ -3778,7 -3778,7 +3778,7 @@@ cont_thread
}
if (!progress) {
elr->lr_next_sched = jiffies +
- prandom_u32_max(EXT4_DEF_LI_MAX_START_DELAY * HZ);
+ get_random_u32_below(EXT4_DEF_LI_MAX_START_DELAY * HZ);
}
if (time_before(elr->lr_next_sched, next_wakeup))
next_wakeup = elr->lr_next_sched;
@@@ -3925,8 -3925,7 +3925,7 @@@ static struct ext4_li_request *ext4_li_
* spread the inode table initialization requests
* better.
*/
- elr->lr_next_sched = jiffies + prandom_u32_max(
- EXT4_DEF_LI_MAX_START_DELAY * HZ);
+ elr->lr_next_sched = jiffies + get_random_u32_below(EXT4_DEF_LI_MAX_START_DELAY * HZ);
return elr;
}
@@@ -4881,7 -4880,7 +4880,7 @@@ out
flush_work(&sbi->s_error_work);
jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
- return err;
+ return -EINVAL;
}
static int ext4_journal_data_mode_check(struct super_block *sb)
diff --combined fs/f2fs/gc.c
index 6466db75af5d,536d332d9e2e..aa561f698b54
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@@ -96,6 -96,16 +96,6 @@@ static int gc_thread_func(void *data
* invalidated soon after by user update or deletion.
* So, I'd like to wait some time to collect dirty segments.
*/
- if (sbi->gc_mode == GC_URGENT_HIGH) {
- spin_lock(&sbi->gc_urgent_high_lock);
- if (sbi->gc_urgent_high_remaining) {
- sbi->gc_urgent_high_remaining--;
- if (!sbi->gc_urgent_high_remaining)
- sbi->gc_mode = GC_NORMAL;
- }
- spin_unlock(&sbi->gc_urgent_high_lock);
- }
-
if (sbi->gc_mode == GC_URGENT_HIGH ||
sbi->gc_mode == GC_URGENT_MID) {
wait_ms = gc_th->urgent_sleep_time;
@@@ -152,15 -162,6 +152,15 @@@ do_gc
/* balancing f2fs's metadata periodically */
f2fs_balance_fs_bg(sbi, true);
next:
+ if (sbi->gc_mode != GC_NORMAL) {
+ spin_lock(&sbi->gc_remaining_trials_lock);
+ if (sbi->gc_remaining_trials) {
+ sbi->gc_remaining_trials--;
+ if (!sbi->gc_remaining_trials)
+ sbi->gc_mode = GC_NORMAL;
+ }
+ spin_unlock(&sbi->gc_remaining_trials_lock);
+ }
sb_end_write(sbi->sb);
} while (!kthread_should_stop());
@@@ -171,10 -172,13 +171,10 @@@ int f2fs_start_gc_thread(struct f2fs_sb
{
struct f2fs_gc_kthread *gc_th;
dev_t dev = sbi->sb->s_bdev->bd_dev;
- int err = 0;
gc_th = f2fs_kmalloc(sbi, sizeof(struct f2fs_gc_kthread), GFP_KERNEL);
- if (!gc_th) {
- err = -ENOMEM;
- goto out;
- }
+ if (!gc_th)
+ return -ENOMEM;
gc_th->urgent_sleep_time = DEF_GC_THREAD_URGENT_SLEEP_TIME;
gc_th->min_sleep_time = DEF_GC_THREAD_MIN_SLEEP_TIME;
@@@ -189,14 -193,12 +189,14 @@@
sbi->gc_thread->f2fs_gc_task = kthread_run(gc_thread_func, sbi,
"f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(gc_th->f2fs_gc_task)) {
- err = PTR_ERR(gc_th->f2fs_gc_task);
+ int err = PTR_ERR(gc_th->f2fs_gc_task);
+
kfree(gc_th);
sbi->gc_thread = NULL;
+ return err;
}
-out:
- return err;
+
+ return 0;
}
void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi)
@@@ -280,7 -282,7 +280,7 @@@ static void select_policy(struct f2fs_s
/* let's select beginning hot/small space first in no_heap mode*/
if (f2fs_need_rand_seg(sbi))
- p->offset = prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ p->offset = get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
else if (test_opt(sbi, NOHEAP) &&
(type == CURSEG_HOT_DATA || IS_NODESEG(type)))
p->offset = 0;
@@@ -1108,7 -1110,6 +1108,7 @@@ static bool is_alive(struct f2fs_sb_inf
if (ofs_in_node >= max_addrs) {
f2fs_err(sbi, "Inconsistent ofs_in_node:%u in summary, ino:%u, nid:%u, max:%u",
ofs_in_node, dni->ino, dni->nid, max_addrs);
+ f2fs_put_page(node_page, 1);
return false;
}
@@@ -2132,6 -2133,8 +2132,6 @@@ out_unlock
if (err)
return err;
- set_sbi_flag(sbi, SBI_IS_RESIZEFS);
-
freeze_super(sbi->sb);
f2fs_down_write(&sbi->gc_lock);
f2fs_down_write(&sbi->cp_global_sem);
@@@ -2147,7 -2150,6 +2147,7 @@@
if (err)
goto out_err;
+ set_sbi_flag(sbi, SBI_IS_RESIZEFS);
err = free_segment_range(sbi, secs, false);
if (err)
goto recover_out;
@@@ -2171,7 -2173,6 +2171,7 @@@
f2fs_commit_super(sbi, false);
}
recover_out:
+ clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
if (err) {
set_sbi_flag(sbi, SBI_NEED_FSCK);
f2fs_err(sbi, "resize_fs failed, should run fsck to repair!");
@@@ -2184,5 -2185,6 +2184,5 @@@ out_err
f2fs_up_write(&sbi->cp_global_sem);
f2fs_up_write(&sbi->gc_lock);
thaw_super(sbi->sb);
- clear_sbi_flag(sbi, SBI_IS_RESIZEFS);
return err;
}
diff --combined fs/f2fs/segment.c
index aa4be7f25963,8319fdc59fb4..978a48b9b1c7
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@@ -620,11 -620,12 +620,11 @@@ int f2fs_create_flush_cmd_control(struc
{
dev_t dev = sbi->sb->s_bdev->bd_dev;
struct flush_cmd_control *fcc;
- int err = 0;
if (SM_I(sbi)->fcc_info) {
fcc = SM_I(sbi)->fcc_info;
if (fcc->f2fs_issue_flush)
- return err;
+ return 0;
goto init_thread;
}
@@@ -637,20 -638,19 +637,20 @@@
init_llist_head(&fcc->issue_list);
SM_I(sbi)->fcc_info = fcc;
if (!test_opt(sbi, FLUSH_MERGE))
- return err;
+ return 0;
init_thread:
fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
"f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(fcc->f2fs_issue_flush)) {
- err = PTR_ERR(fcc->f2fs_issue_flush);
+ int err = PTR_ERR(fcc->f2fs_issue_flush);
+
kfree(fcc);
SM_I(sbi)->fcc_info = NULL;
return err;
}
- return err;
+ return 0;
}
void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
@@@ -856,7 -856,7 +856,7 @@@ block_t f2fs_get_unusable_blocks(struc
}
mutex_unlock(&dirty_i->seglist_lock);
- unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE];
+ unusable = max(holes[DATA], holes[NODE]);
if (unusable > ovp_holes)
return unusable - ovp_holes;
return 0;
@@@ -1448,7 -1448,7 +1448,7 @@@ retry
if (i + 1 < dpolicy->granularity)
break;
- if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
+ if (i + 1 < dcc->max_ordered_discard && dpolicy->ordered)
return __issue_discard_cmd_orderly(sbi, dpolicy);
pend_list = &dcc->pend_list[i];
@@@ -2025,10 -2025,8 +2025,10 @@@ int f2fs_start_discard_thread(struct f2
dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
"f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
- if (IS_ERR(dcc->f2fs_issue_discard))
+ if (IS_ERR(dcc->f2fs_issue_discard)) {
err = PTR_ERR(dcc->f2fs_issue_discard);
+ dcc->f2fs_issue_discard = NULL;
+ }
return err;
}
@@@ -2048,7 -2046,6 +2048,7 @@@ static int create_discard_cmd_control(s
return -ENOMEM;
dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
+ dcc->max_ordered_discard = DEFAULT_MAX_ORDERED_DISCARD_GRANULARITY;
if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SEGMENT)
dcc->discard_granularity = sbi->blocks_per_seg;
else if (F2FS_OPTION(sbi).discard_unit == DISCARD_UNIT_SECTION)
@@@ -2537,7 -2534,7 +2537,7 @@@ static unsigned int __get_next_segno(st
sanity_check_seg_type(sbi, seg_type);
if (f2fs_need_rand_seg(sbi))
- return prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ return get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
/* if segs_per_sec is large than 1, we need to keep original policy. */
if (__is_large_section(sbi))
@@@ -2591,7 -2588,7 +2591,7 @@@ static void new_curseg(struct f2fs_sb_i
curseg->alloc_type = LFS;
if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
curseg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_between(1, sbi->max_fragment_chunk + 1);
}
static int __next_free_blkoff(struct f2fs_sb_info *sbi,
@@@ -2628,9 -2625,9 +2628,9 @@@ static void __refresh_next_blkoff(struc
/* To allocate block chunks in different sizes, use random number */
if (--seg->fragment_remained_chunk <= 0) {
seg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_between(1, sbi->max_fragment_chunk + 1);
seg->next_blkoff +=
- prandom_u32_max(sbi->max_fragment_hole) + 1;
+ get_random_u32_between(1, sbi->max_fragment_hole + 1);
}
}
}
diff --combined fs/xfs/libxfs/xfs_alloc.c
index de79f5d07f65,a0221e9afa19..989cf341779b
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@@ -263,7 -263,11 +263,7 @@@ xfs_alloc_get_rec
goto out_bad_rec;
/* check for valid extent range, including overflow */
- if (!xfs_verify_agbno(pag, *bno))
- goto out_bad_rec;
- if (*bno > *bno + *len)
- goto out_bad_rec;
- if (!xfs_verify_agbno(pag, *bno + *len - 1))
+ if (!xfs_verify_agbext(pag, *bno, *len))
goto out_bad_rec;
return 0;
@@@ -1516,7 -1520,7 +1516,7 @@@ xfs_alloc_ag_vextent_lastblock
#ifdef DEBUG
/* Randomly don't execute the first algorithm. */
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
return 0;
#endif
diff --combined fs/xfs/xfs_error.c
index c6b2aabd6f18,8fc58abffb8b..822e6a0e9d1a
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@@ -234,18 -234,13 +234,18 @@@ in
xfs_errortag_init(
struct xfs_mount *mp)
{
+ int ret;
+
mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
KM_MAYFAIL);
if (!mp->m_errortag)
return -ENOMEM;
- return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
- &mp->m_kobj, "errortag");
+ ret = xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
+ &mp->m_kobj, "errortag");
+ if (ret)
+ kmem_free(mp->m_errortag);
+ return ret;
}
void
@@@ -279,7 -274,7 +279,7 @@@ xfs_errortag_test
ASSERT(error_tag < XFS_ERRTAG_MAX);
randfactor = mp->m_errortag[error_tag];
- if (!randfactor || prandom_u32_max(randfactor))
+ if (!randfactor || get_random_u32_below(randfactor))
return false;
xfs_warn_ratelimited(mp,
diff --combined kernel/bpf/core.c
index e772d9cc0a38,38159f39e2af..d7e1b30c33d6
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@@ -864,7 -864,8 +864,7 @@@ static struct bpf_prog_pack *alloc_new_
list_add_tail(&pack->list, &pack_list);
set_vm_flush_reset_perms(pack->ptr);
- set_memory_ro((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
- set_memory_x((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
+ set_memory_rox((unsigned long)pack->ptr, BPF_PROG_PACK_SIZE / PAGE_SIZE);
return pack;
}
@@@ -882,7 -883,8 +882,7 @@@ void *bpf_prog_pack_alloc(u32 size, bpf
if (ptr) {
bpf_fill_ill_insns(ptr, size);
set_vm_flush_reset_perms(ptr);
- set_memory_ro((unsigned long)ptr, size / PAGE_SIZE);
- set_memory_x((unsigned long)ptr, size / PAGE_SIZE);
+ set_memory_rox((unsigned long)ptr, size / PAGE_SIZE);
}
goto out;
}
@@@ -1030,7 -1032,7 +1030,7 @@@ bpf_jit_binary_alloc(unsigned int progl
hdr->size = size;
hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
PAGE_SIZE - sizeof(*hdr));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
/* Leave a random number of instructions before BPF code. */
*image_ptr = &hdr->image[start];
@@@ -1092,7 -1094,7 +1092,7 @@@ bpf_jit_binary_pack_alloc(unsigned int
hole = min_t(unsigned int, size - (proglen + sizeof(*ro_header)),
BPF_PROG_CHUNK_SIZE - sizeof(*ro_header));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
*image_ptr = &ro_header->image[start];
*rw_image = &(*rw_header)->image[start];
@@@ -2249,14 -2251,8 +2249,14 @@@ static void __bpf_prog_array_free_sleep
{
struct bpf_prog_array *progs;
+ /* If RCU Tasks Trace grace period implies RCU grace period, there is
+ * no need to call kfree_rcu(), just call kfree() directly.
+ */
progs = container_of(rcu, struct bpf_prog_array, rcu);
- kfree_rcu(progs, rcu);
+ if (rcu_trace_implies_rcu_gp())
+ kfree(progs);
+ else
+ kfree_rcu(progs, rcu);
}
void bpf_prog_array_free_sleepable(struct bpf_prog_array *progs)
diff --combined kernel/fork.c
index 4439f7ff78f6,ec57cae58ff1..cfff237094aa
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@@ -75,7 -75,6 +75,6 @@@
#include <linux/freezer.h>
#include <linux/delayacct.h>
#include <linux/taskstats_kern.h>
- #include <linux/random.h>
#include <linux/tty.h>
#include <linux/fs_struct.h>
#include <linux/magic.h>
@@@ -97,6 -96,7 +96,7 @@@
#include <linux/scs.h>
#include <linux/io_uring.h>
#include <linux/bpf.h>
+ #include <linux/stackprotector.h>
#include <asm/pgalloc.h>
#include <linux/uaccess.h>
@@@ -535,9 -535,6 +535,9 @@@ void put_task_stack(struct task_struct
void free_task(struct task_struct *tsk)
{
+#ifdef CONFIG_SECCOMP
+ WARN_ON_ONCE(tsk->seccomp.filter);
+#endif
release_user_cpus_ptr(tsk);
scs_release(tsk);
@@@ -2409,6 -2406,12 +2409,6 @@@ static __latent_entropy struct task_str
spin_lock(¤t->sighand->siglock);
- /*
- * Copy seccomp details explicitly here, in case they were changed
- * before holding sighand lock.
- */
- copy_seccomp(p);
-
rv_task_fork(p);
rseq_fork(p, clone_flags);
@@@ -2425,14 -2428,6 +2425,14 @@@
goto bad_fork_cancel_cgroup;
}
+ /* No more failure paths after this point. */
+
+ /*
+ * Copy seccomp details explicitly here, in case they were changed
+ * before holding sighand lock.
+ */
+ copy_seccomp(p);
+
init_task_pid_links(p);
if (likely(p->pid)) {
ptrace_init_task(p, (clone_flags & CLONE_PTRACE) || trace);
@@@ -2597,6 -2592,11 +2597,6 @@@ struct task_struct * __init fork_idle(i
return task;
}
-struct mm_struct *copy_init_mm(void)
-{
- return dup_mm(NULL, &init_mm);
-}
-
/*
* This is like kernel_clone(), but shaved down and tailored to just
* creating io_uring workers. It returns a created task, or an error pointer.
@@@ -3015,27 -3015,10 +3015,27 @@@ static void sighand_ctor(void *data
init_waitqueue_head(&sighand->signalfd_wqh);
}
-void __init proc_caches_init(void)
+void __init mm_cache_init(void)
{
unsigned int mm_size;
+ /*
+ * The mm_cpumask is located at the end of mm_struct, and is
+ * dynamically sized based on the maximum CPU number this system
+ * can have, taking hotplug into account (nr_cpu_ids).
+ */
+ mm_size = sizeof(struct mm_struct) + cpumask_size();
+
+ mm_cachep = kmem_cache_create_usercopy("mm_struct",
+ mm_size, ARCH_MIN_MMSTRUCT_ALIGN,
+ SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
+ offsetof(struct mm_struct, saved_auxv),
+ sizeof_field(struct mm_struct, saved_auxv),
+ NULL);
+}
+
+void __init proc_caches_init(void)
+{
sighand_cachep = kmem_cache_create("sighand_cache",
sizeof(struct sighand_struct), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_TYPESAFE_BY_RCU|
@@@ -3053,6 -3036,19 +3053,6 @@@
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
NULL);
- /*
- * The mm_cpumask is located at the end of mm_struct, and is
- * dynamically sized based on the maximum CPU number this system
- * can have, taking hotplug into account (nr_cpu_ids).
- */
- mm_size = sizeof(struct mm_struct) + cpumask_size();
-
- mm_cachep = kmem_cache_create_usercopy("mm_struct",
- mm_size, ARCH_MIN_MMSTRUCT_ALIGN,
- SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
- offsetof(struct mm_struct, saved_auxv),
- sizeof_field(struct mm_struct, saved_auxv),
- NULL);
vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC|SLAB_ACCOUNT);
mmap_init();
nsproxy_cache_init();
diff --combined kernel/time/clocksource.c
index 4015ec6503a5,9cf32ccda715..5f9e0cb051c3
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@@ -310,7 -310,7 +310,7 @@@ static void clocksource_verify_choose_c
* CPUs that are currently online.
*/
for (i = 1; i < n; i++) {
- cpu = prandom_u32_max(nr_cpu_ids);
+ cpu = get_random_u32_below(nr_cpu_ids);
cpu = cpumask_next(cpu - 1, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = cpumask_first(cpu_online_mask);
@@@ -386,7 -386,7 +386,7 @@@ EXPORT_SYMBOL_GPL(clocksource_verify_pe
static void clocksource_watchdog(struct timer_list *unused)
{
- u64 csnow, wdnow, cslast, wdlast, delta;
+ u64 csnow, wdnow, cslast, wdlast, delta, wdi;
int next_cpu, reset_pending;
int64_t wd_nsec, cs_nsec;
struct clocksource *cs;
@@@ -440,38 -440,6 +440,38 @@@
if (atomic_read(&watchdog_reset_pending))
continue;
+ /* Check for bogus measurements. */
+ wdi = jiffies_to_nsecs(WATCHDOG_INTERVAL);
+ if (wd_nsec > (wdi << 2) || cs_nsec > (wdi << 2)) {
+ bool needwarn = false;
+ u64 wd_lb;
+
+ cs->wd_bogus_count++;
+ if (!cs->wd_bogus_shift) {
+ needwarn = true;
+ } else {
+ delta = clocksource_delta(wdnow, cs->wd_last_bogus, watchdog->mask);
+ wd_lb = clocksource_cyc2ns(delta, watchdog->mult, watchdog->shift);
+ if ((1 << cs->wd_bogus_shift) * wdi <= wd_lb)
+ needwarn = true;
+ }
+ if (needwarn) {
+ /* This can happen on busy systems, which can delay the watchdog. */
+ pr_warn("timekeeping watchdog on CPU%d: Watchdog clocksource '%s' advanced an excessive %lld ns during %d-jiffy time interval (%lu since last message), probable CPU overutilization, skipping watchdog check.\n", smp_processor_id(), watchdog->name, wd_nsec, WATCHDOG_INTERVAL, cs->wd_bogus_count);
+ cs->wd_last_bogus = wdnow;
+ if (cs->wd_bogus_shift < 10)
+ cs->wd_bogus_shift++;
+ cs->wd_bogus_count = 0;
+ }
+ continue;
+ }
+ /* Check too-short measurements second to handle wrap. */
+ if (wd_nsec < (wdi >> 2) || cs_nsec < (wdi >> 2)) {
+ /* This usually indicates broken timer code or hardware. */
+ pr_warn("timekeeping watchdog on CPU%d: Watchdog clocksource '%s' advanced only %lld ns during %d-jiffy time interval, skipping watchdog check.\n", smp_processor_id(), watchdog->name, wd_nsec, WATCHDOG_INTERVAL);
+ continue;
+ }
+
/* Check the deviation from the watchdog clocksource. */
md = cs->uncertainty_margin + watchdog->uncertainty_margin;
if (abs(cs_nsec - wd_nsec) > md) {
diff --combined lib/kobject.c
index ba1017cd67d1,af1f5f2954d4..62b2b0643cbb
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@@ -94,10 -94,10 +94,10 @@@ static int create_dir(struct kobject *k
return 0;
}
-static int get_kobj_path_length(struct kobject *kobj)
+static int get_kobj_path_length(const struct kobject *kobj)
{
int length = 1;
- struct kobject *parent = kobj;
+ const struct kobject *parent = kobj;
/* walk up the ancestors until we hit the one pointing to the
* root.
@@@ -112,9 -112,9 +112,9 @@@
return length;
}
-static void fill_kobj_path(struct kobject *kobj, char *path, int length)
+static void fill_kobj_path(const struct kobject *kobj, char *path, int length)
{
- struct kobject *parent;
+ const struct kobject *parent;
--length;
for (parent = kobj; parent; parent = parent->parent) {
@@@ -136,7 -136,7 +136,7 @@@
*
* Return: The newly allocated memory, caller must free with kfree().
*/
-char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask)
+char *kobject_get_path(const struct kobject *kobj, gfp_t gfp_mask)
{
char *path;
int len;
@@@ -694,7 -694,7 +694,7 @@@ static void kobject_release(struct kre
{
struct kobject *kobj = container_of(kref, struct kobject, kref);
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
- unsigned long delay = HZ + HZ * prandom_u32_max(4);
+ unsigned long delay = HZ + HZ * get_random_u32_below(4);
pr_info("kobject: '%s' (%p): %s, parent %p (delayed %ld)\n",
kobject_name(kobj), kobj, __func__, kobj->parent, delay);
INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);
@@@ -834,9 -834,6 +834,9 @@@ EXPORT_SYMBOL_GPL(kobj_sysfs_ops)
/**
* kset_register() - Initialize and add a kset.
* @k: kset.
+ *
+ * NOTE: On error, the kset.kobj.name allocated by() kobj_set_name()
+ * is freed, it can not be used any more.
*/
int kset_register(struct kset *k)
{
@@@ -847,12 -844,8 +847,12 @@@
kset_init(k);
err = kobject_add_internal(&k->kobj);
- if (err)
+ if (err) {
+ kfree_const(k->kobj.name);
+ /* Set it to NULL to avoid accessing bad pointer in callers. */
+ k->kobj.name = NULL;
return err;
+ }
kobject_uevent(&k->kobj, KOBJ_ADD);
return 0;
}
diff --combined lib/test_printf.c
index 1fb12c1a0fa9,da5efc8b8543..1c1c9f2b5a71
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@@ -126,7 -126,7 +126,7 @@@ __test(const char *expect, int elen, co
* be able to print it as expected.
*/
failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap);
- rand = 1 + prandom_u32_max(elen+1);
+ rand = get_random_u32_between(1, elen + 2);
/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
failed_tests += do_test(rand, expect, elen, fmt, ap);
failed_tests += do_test(0, expect, elen, fmt, ap);
@@@ -704,29 -704,31 +704,29 @@@ flags(void
static void __init fwnode_pointer(void)
{
- const struct software_node softnodes[] = {
- { .name = "first", },
- { .name = "second", .parent = &softnodes[0], },
- { .name = "third", .parent = &softnodes[1], },
- { NULL /* Guardian */ }
- };
- const char * const full_name = "first/second/third";
+ const struct software_node first = { .name = "first" };
+ const struct software_node second = { .name = "second", .parent = &first };
+ const struct software_node third = { .name = "third", .parent = &second };
+ const struct software_node *group[] = { &first, &second, &third, NULL };
const char * const full_name_second = "first/second";
+ const char * const full_name_third = "first/second/third";
const char * const second_name = "second";
const char * const third_name = "third";
int rval;
- rval = software_node_register_nodes(softnodes);
+ rval = software_node_register_node_group(group);
if (rval) {
pr_warn("cannot register softnodes; rval %d\n", rval);
return;
}
- test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1]));
- test(full_name, "%pfw", software_node_fwnode(&softnodes[2]));
- test(full_name, "%pfwf", software_node_fwnode(&softnodes[2]));
- test(second_name, "%pfwP", software_node_fwnode(&softnodes[1]));
- test(third_name, "%pfwP", software_node_fwnode(&softnodes[2]));
+ test(full_name_second, "%pfw", software_node_fwnode(&second));
+ test(full_name_third, "%pfw", software_node_fwnode(&third));
+ test(full_name_third, "%pfwf", software_node_fwnode(&third));
+ test(second_name, "%pfwP", software_node_fwnode(&second));
+ test(third_name, "%pfwP", software_node_fwnode(&third));
- software_node_unregister_nodes(softnodes);
+ software_node_unregister_node_group(group);
}
static void __init fourcc_pointer(void)
diff --combined mm/slub.c
index 0a14e7bc278c,7cd2c657030a..1fd8e1f15cd0
--- a/mm/slub.c
+++ b/mm/slub.c
@@@ -1800,8 -1800,6 +1800,8 @@@ static inline struct slab *alloc_slab_p
slab = folio_slab(folio);
__folio_set_slab(folio);
+ /* Make the flag visible before any changes to folio->mapping */
+ smp_wmb();
if (page_is_pfmemalloc(folio_page(folio, 0)))
slab_set_pfmemalloc(slab);
@@@ -1883,7 -1881,7 +1883,7 @@@ static bool shuffle_freelist(struct kme
return false;
freelist_count = oo_objects(s->oo);
- pos = prandom_u32_max(freelist_count);
+ pos = get_random_u32_below(freelist_count);
page_limit = slab->objects * s->size;
start = fixup_red_left(s, slab_address(slab));
@@@ -2001,11 -1999,17 +2001,11 @@@ static void __free_slab(struct kmem_cac
int order = folio_order(folio);
int pages = 1 << order;
- if (kmem_cache_debug_flags(s, SLAB_CONSISTENCY_CHECKS)) {
- void *p;
-
- slab_pad_check(s, slab);
- for_each_object(p, s, slab_address(slab), slab->objects)
- check_object(s, slab, p, SLUB_RED_INACTIVE);
- }
-
__slab_clear_pfmemalloc(slab);
- __folio_clear_slab(folio);
folio->mapping = NULL;
+ /* Make the mapping reset visible before clearing the flag */
+ smp_wmb();
+ __folio_clear_slab(folio);
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += pages;
unaccount_slab(slab, order, s);
@@@ -2021,17 -2025,9 +2021,17 @@@ static void rcu_free_slab(struct rcu_he
static void free_slab(struct kmem_cache *s, struct slab *slab)
{
- if (unlikely(s->flags & SLAB_TYPESAFE_BY_RCU)) {
+ if (kmem_cache_debug_flags(s, SLAB_CONSISTENCY_CHECKS)) {
+ void *p;
+
+ slab_pad_check(s, slab);
+ for_each_object(p, s, slab_address(slab), slab->objects)
+ check_object(s, slab, p, SLUB_RED_INACTIVE);
+ }
+
+ if (unlikely(s->flags & SLAB_TYPESAFE_BY_RCU))
call_rcu(&slab->rcu_head, rcu_free_slab);
- } else
+ else
__free_slab(s, slab);
}
@@@ -2415,7 -2411,7 +2415,7 @@@ static void init_kmem_cache_cpus(struc
static void deactivate_slab(struct kmem_cache *s, struct slab *slab,
void *freelist)
{
- enum slab_modes { M_NONE, M_PARTIAL, M_FULL, M_FREE, M_FULL_NOLIST };
+ enum slab_modes { M_NONE, M_PARTIAL, M_FREE, M_FULL_NOLIST };
struct kmem_cache_node *n = get_node(s, slab_nid(slab));
int free_delta = 0;
enum slab_modes mode = M_NONE;
@@@ -2491,6 -2487,14 +2491,6 @@@ redo
* acquire_slab() will see a slab that is frozen
*/
spin_lock_irqsave(&n->list_lock, flags);
- } else if (kmem_cache_debug_flags(s, SLAB_STORE_USER)) {
- mode = M_FULL;
- /*
- * This also ensures that the scanning of full
- * slabs from diagnostic functions will not see
- * any frozen slabs.
- */
- spin_lock_irqsave(&n->list_lock, flags);
} else {
mode = M_FULL_NOLIST;
}
@@@ -2500,7 -2504,7 +2500,7 @@@
old.freelist, old.counters,
new.freelist, new.counters,
"unfreezing slab")) {
- if (mode == M_PARTIAL || mode == M_FULL)
+ if (mode == M_PARTIAL)
spin_unlock_irqrestore(&n->list_lock, flags);
goto redo;
}
@@@ -2514,6 -2518,10 +2514,6 @@@
stat(s, DEACTIVATE_EMPTY);
discard_slab(s, slab);
stat(s, FREE_SLAB);
- } else if (mode == M_FULL) {
- add_full(s, n, slab);
- spin_unlock_irqrestore(&n->list_lock, flags);
- stat(s, DEACTIVATE_FULL);
} else if (mode == M_FULL_NOLIST) {
stat(s, DEACTIVATE_FULL);
}
@@@ -4009,8 -4017,7 +4009,8 @@@ init_kmem_cache_node(struct kmem_cache_
static inline int alloc_kmem_cache_cpus(struct kmem_cache *s)
{
BUILD_BUG_ON(PERCPU_DYNAMIC_EARLY_SIZE <
- KMALLOC_SHIFT_HIGH * sizeof(struct kmem_cache_cpu));
+ NR_KMALLOC_TYPES * KMALLOC_SHIFT_HIGH *
+ sizeof(struct kmem_cache_cpu));
/*
* Must align to double word boundary for the double cmpxchg
@@@ -5579,21 -5586,7 +5579,21 @@@ static ssize_t failslab_show(struct kme
{
return sysfs_emit(buf, "%d\n", !!(s->flags & SLAB_FAILSLAB));
}
-SLAB_ATTR_RO(failslab);
+
+static ssize_t failslab_store(struct kmem_cache *s, const char *buf,
+ size_t length)
+{
+ if (s->refcount > 1)
+ return -EINVAL;
+
+ if (buf[0] == '1')
+ WRITE_ONCE(s->flags, s->flags | SLAB_FAILSLAB);
+ else
+ WRITE_ONCE(s->flags, s->flags & ~SLAB_FAILSLAB);
+
+ return length;
+}
+SLAB_ATTR(failslab);
#endif
static ssize_t shrink_show(struct kmem_cache *s, char *buf)
@@@ -5927,6 -5920,11 +5927,6 @@@ static int sysfs_slab_add(struct kmem_c
struct kset *kset = cache_kset(s);
int unmergeable = slab_unmergeable(s);
- if (!kset) {
- kobject_init(&s->kobj, &slab_ktype);
- return 0;
- }
-
if (!unmergeable && disable_higher_order_debug &&
(slub_debug & DEBUG_METADATA_FLAGS))
unmergeable = 1;
@@@ -6056,7 -6054,8 +6056,7 @@@ static int __init slab_sysfs_init(void
mutex_unlock(&slab_mutex);
return 0;
}
-
-__initcall(slab_sysfs_init);
+late_initcall(slab_sysfs_init);
#endif /* CONFIG_SYSFS */
#if defined(CONFIG_SLUB_DEBUG) && defined(CONFIG_DEBUG_FS)
diff --combined net/bluetooth/mgmt.c
index 0dd30a3beb77,bab37a529db5..38828621dd3d
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@@ -7373,9 -7373,8 +7373,8 @@@ static int get_conn_info(struct sock *s
/* To avoid client trying to guess when to poll again for information we
* calculate conn info age as random value between min/max set in hdev.
*/
- conn_info_age = hdev->conn_info_min_age +
- prandom_u32_max(hdev->conn_info_max_age -
- hdev->conn_info_min_age);
+ conn_info_age = get_random_u32_between(hdev->conn_info_min_age,
+ hdev->conn_info_max_age);
/* Query controller to refresh cached values if they are too old or were
* never read.
@@@ -8859,7 -8858,7 +8858,7 @@@ static int add_ext_adv_params(struct so
* extra parameters we don't know about will be ignored in this request.
*/
if (data_len < MGMT_ADD_EXT_ADV_PARAMS_MIN_SIZE)
- return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_EXT_ADV_PARAMS,
MGMT_STATUS_INVALID_PARAMS);
flags = __le32_to_cpu(cp->flags);
diff --combined net/can/j1939/transport.c
index f26f4cfa9e63,67d36776aff4..5c722b55fe23
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@@ -987,7 -987,7 +987,7 @@@ static int j1939_session_tx_eoma(struc
/* wait for the EOMA packet to come in */
j1939_tp_set_rxtimeout(session, 1250);
- netdev_dbg(session->priv->ndev, "%p: 0x%p\n", __func__, session);
+ netdev_dbg(session->priv->ndev, "%s: 0x%p\n", __func__, session);
return 0;
}
@@@ -1168,7 -1168,7 +1168,7 @@@ static enum hrtimer_restart j1939_tp_tx
if (session->tx_retry < J1939_XTP_TX_RETRY_LIMIT) {
session->tx_retry++;
j1939_tp_schedule_txtimer(session,
- 10 + prandom_u32_max(16));
+ 10 + get_random_u32_below(16));
} else {
netdev_alert(priv->ndev, "%s: 0x%p: tx retry count reached\n",
__func__, session);
diff --combined net/ipv4/tcp_input.c
index d764b5854dfc,1a348298a99e..c9e7c9f57ee1
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@@ -3646,7 -3646,8 +3646,8 @@@ static void tcp_send_challenge_ack(stru
u32 half = (ack_limit + 1) >> 1;
WRITE_ONCE(net->ipv4.tcp_challenge_timestamp, now);
- WRITE_ONCE(net->ipv4.tcp_challenge_count, half + prandom_u32_max(ack_limit));
+ WRITE_ONCE(net->ipv4.tcp_challenge_count,
+ get_random_u32_between(half, ack_limit + half));
}
count = READ_ONCE(net->ipv4.tcp_challenge_count);
if (count > 0) {
@@@ -4764,8 -4765,8 +4765,8 @@@ static void tcp_ofo_queue(struct sock *
}
}
-static bool tcp_prune_ofo_queue(struct sock *sk);
-static int tcp_prune_queue(struct sock *sk);
+static bool tcp_prune_ofo_queue(struct sock *sk, const struct sk_buff *in_skb);
+static int tcp_prune_queue(struct sock *sk, const struct sk_buff *in_skb);
static int tcp_try_rmem_schedule(struct sock *sk, struct sk_buff *skb,
unsigned int size)
@@@ -4773,11 -4774,11 +4774,11 @@@
if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
!sk_rmem_schedule(sk, skb, size)) {
- if (tcp_prune_queue(sk) < 0)
+ if (tcp_prune_queue(sk, skb) < 0)
return -1;
while (!sk_rmem_schedule(sk, skb, size)) {
- if (!tcp_prune_ofo_queue(sk))
+ if (!tcp_prune_ofo_queue(sk, skb))
return -1;
}
}
@@@ -5329,8 -5330,6 +5330,8 @@@ new_range
* Clean the out-of-order queue to make room.
* We drop high sequences packets to :
* 1) Let a chance for holes to be filled.
+ * This means we do not drop packets from ooo queue if their sequence
+ * is before incoming packet sequence.
* 2) not add too big latencies if thousands of packets sit there.
* (But if application shrinks SO_RCVBUF, we could still end up
* freeing whole queue here)
@@@ -5338,31 -5337,24 +5339,31 @@@
*
* Return true if queue has shrunk.
*/
-static bool tcp_prune_ofo_queue(struct sock *sk)
+static bool tcp_prune_ofo_queue(struct sock *sk, const struct sk_buff *in_skb)
{
struct tcp_sock *tp = tcp_sk(sk);
struct rb_node *node, *prev;
+ bool pruned = false;
int goal;
if (RB_EMPTY_ROOT(&tp->out_of_order_queue))
return false;
- NET_INC_STATS(sock_net(sk), LINUX_MIB_OFOPRUNED);
goal = sk->sk_rcvbuf >> 3;
node = &tp->ooo_last_skb->rbnode;
+
do {
+ struct sk_buff *skb = rb_to_skb(node);
+
+ /* If incoming skb would land last in ofo queue, stop pruning. */
+ if (after(TCP_SKB_CB(in_skb)->seq, TCP_SKB_CB(skb)->seq))
+ break;
+ pruned = true;
prev = rb_prev(node);
rb_erase(node, &tp->out_of_order_queue);
- goal -= rb_to_skb(node)->truesize;
- tcp_drop_reason(sk, rb_to_skb(node),
- SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE);
+ goal -= skb->truesize;
+ tcp_drop_reason(sk, skb, SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE);
+ tp->ooo_last_skb = rb_to_skb(prev);
if (!prev || goal <= 0) {
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf &&
!tcp_under_memory_pressure(sk))
@@@ -5371,18 -5363,16 +5372,18 @@@
}
node = prev;
} while (node);
- tp->ooo_last_skb = rb_to_skb(prev);
- /* Reset SACK state. A conforming SACK implementation will
- * do the same at a timeout based retransmit. When a connection
- * is in a sad state like this, we care only about integrity
- * of the connection not performance.
- */
- if (tp->rx_opt.sack_ok)
- tcp_sack_reset(&tp->rx_opt);
- return true;
+ if (pruned) {
+ NET_INC_STATS(sock_net(sk), LINUX_MIB_OFOPRUNED);
+ /* Reset SACK state. A conforming SACK implementation will
+ * do the same at a timeout based retransmit. When a connection
+ * is in a sad state like this, we care only about integrity
+ * of the connection not performance.
+ */
+ if (tp->rx_opt.sack_ok)
+ tcp_sack_reset(&tp->rx_opt);
+ }
+ return pruned;
}
/* Reduce allocated memory if we can, trying to get
@@@ -5392,7 -5382,7 +5393,7 @@@
* until the socket owning process reads some of the data
* to stabilize the situation.
*/
-static int tcp_prune_queue(struct sock *sk)
+static int tcp_prune_queue(struct sock *sk, const struct sk_buff *in_skb)
{
struct tcp_sock *tp = tcp_sk(sk);
@@@ -5419,7 -5409,7 +5420,7 @@@
/* Collapsing did not help, destructive actions follow.
* This must not ever occur. */
- tcp_prune_ofo_queue(sk);
+ tcp_prune_ofo_queue(sk, in_skb);
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf)
return 0;
diff --combined net/netlink/af_netlink.c
index b10d5e50b99d,7a401d94463a..c6b8207e3c38
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@@ -812,17 -812,6 +812,17 @@@ static int netlink_release(struct socke
}
sock_prot_inuse_add(sock_net(sk), &netlink_proto, -1);
+
+ /* Because struct net might disappear soon, do not keep a pointer. */
+ if (!sk->sk_net_refcnt && sock_net(sk) != &init_net) {
+ __netns_tracker_free(sock_net(sk), &sk->ns_tracker, false);
+ /* Because of deferred_put_nlk_sk and use of work queue,
+ * it is possible netns will be freed before this socket.
+ */
+ sock_net_set(sk, &init_net);
+ __netns_tracker_alloc(&init_net, &sk->ns_tracker,
+ false, GFP_KERNEL);
+ }
call_rcu(&nlk->rcu, deferred_put_nlk_sk);
return 0;
}
@@@ -846,7 -835,7 +846,7 @@@ retry
/* Bind collision, search negative portid values. */
if (rover == -4096)
/* rover will be in range [S32_MIN, -4097] */
- rover = S32_MIN + prandom_u32_max(-4096 - S32_MIN);
+ rover = S32_MIN + get_random_u32_below(-4096 - S32_MIN);
else if (rover >= -4096)
rover = -4097;
portid = rover--;
@@@ -2499,24 -2488,19 +2499,24 @@@ void netlink_ack(struct sk_buff *in_skb
flags |= NLM_F_ACK_TLVS;
skb = nlmsg_new(payload + tlvlen, GFP_KERNEL);
- if (!skb) {
- NETLINK_CB(in_skb).sk->sk_err = ENOBUFS;
- sk_error_report(NETLINK_CB(in_skb).sk);
- return;
- }
+ if (!skb)
+ goto err_bad_put;
rep = nlmsg_put(skb, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq,
- NLMSG_ERROR, payload, flags);
+ NLMSG_ERROR, sizeof(*errmsg), flags);
+ if (!rep)
+ goto err_bad_put;
errmsg = nlmsg_data(rep);
errmsg->error = err;
- unsafe_memcpy(&errmsg->msg, nlh, payload > sizeof(*errmsg)
- ? nlh->nlmsg_len : sizeof(*nlh),
- /* Bounds checked by the skb layer. */);
+ errmsg->msg = *nlh;
+
+ if (!(flags & NLM_F_CAPPED)) {
+ if (!nlmsg_append(skb, nlmsg_len(nlh)))
+ goto err_bad_put;
+
+ memcpy(errmsg->msg.nlmsg_data, nlh->nlmsg_data,
+ nlmsg_len(nlh));
+ }
if (tlvlen)
netlink_ack_tlv_fill(in_skb, skb, nlh, err, extack);
@@@ -2524,12 -2508,6 +2524,12 @@@
nlmsg_end(skb, rep);
nlmsg_unicast(in_skb->sk, skb, NETLINK_CB(in_skb).portid);
+
+ return;
+
+err_bad_put:
+ NETLINK_CB(in_skb).sk->sk_err = ENOBUFS;
+ sk_error_report(NETLINK_CB(in_skb).sk);
}
EXPORT_SYMBOL(netlink_ack);
diff --combined net/packet/af_packet.c
index 44f20cf8a0c0,51a47ade92e8..4155ce680b41
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@@ -1350,7 -1350,7 +1350,7 @@@ static bool fanout_flow_is_huge(struct
if (READ_ONCE(history[i]) == rxhash)
count++;
- victim = prandom_u32_max(ROLLOVER_HLEN);
+ victim = get_random_u32_below(ROLLOVER_HLEN);
/* Avoid dirtying the cache line if possible */
if (READ_ONCE(history[victim]) != rxhash)
@@@ -1386,7 -1386,7 +1386,7 @@@ static unsigned int fanout_demux_rnd(st
struct sk_buff *skb,
unsigned int num)
{
- return prandom_u32_max(num);
+ return get_random_u32_below(num);
}
static unsigned int fanout_demux_rollover(struct packet_fanout *f,
@@@ -1777,7 -1777,6 +1777,7 @@@ static int fanout_add(struct sock *sk,
match->prot_hook.af_packet_net = read_pnet(&match->net);
match->prot_hook.id_match = match_fanout_group;
match->max_num_members = args->max_num_members;
+ match->prot_hook.ignore_outgoing = type_flags & PACKET_FANOUT_FLAG_IGNORE_OUTGOING;
list_add(&match->list, &fanout_list);
}
err = -EINVAL;
@@@ -3278,7 -3277,7 +3278,7 @@@ static int packet_bind_spkt(struct sock
int addr_len)
{
struct sock *sk = sock->sk;
- char name[sizeof(uaddr->sa_data) + 1];
+ char name[sizeof(uaddr->sa_data_min) + 1];
/*
* Check legality
@@@ -3289,8 -3288,8 +3289,8 @@@
/* uaddr->sa_data comes from the userspace, it's not guaranteed to be
* zero-terminated.
*/
- memcpy(name, uaddr->sa_data, sizeof(uaddr->sa_data));
- name[sizeof(uaddr->sa_data)] = 0;
+ memcpy(name, uaddr->sa_data, sizeof(uaddr->sa_data_min));
+ name[sizeof(uaddr->sa_data_min)] = 0;
return packet_do_bind(sk, name, 0, pkt_sk(sk)->num);
}
@@@ -3562,11 -3561,11 +3562,11 @@@ static int packet_getname_spkt(struct s
return -EOPNOTSUPP;
uaddr->sa_family = AF_PACKET;
- memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data));
+ memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data_min));
rcu_read_lock();
dev = dev_get_by_index_rcu(sock_net(sk), READ_ONCE(pkt_sk(sk)->ifindex));
if (dev)
- strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
+ strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data_min));
rcu_read_unlock();
return sizeof(*uaddr);
diff --combined net/sctp/socket.c
index 3e83963d1b8a,cfe72085fdc4..b198de62f376
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@@ -5098,17 -5098,13 +5098,17 @@@ static void sctp_destroy_sock(struct so
}
/* Triggered when there are no references on the socket anymore */
-static void sctp_destruct_sock(struct sock *sk)
+static void sctp_destruct_common(struct sock *sk)
{
struct sctp_sock *sp = sctp_sk(sk);
/* Free up the HMAC transform. */
crypto_free_shash(sp->hmac);
+}
+static void sctp_destruct_sock(struct sock *sk)
+{
+ sctp_destruct_common(sk);
inet_sock_destruct(sk);
}
@@@ -8323,7 -8319,7 +8323,7 @@@ static int sctp_get_port_local(struct s
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32_max(remaining) + low;
+ rover = get_random_u32_below(remaining) + low;
do {
rover++;
@@@ -9431,7 -9427,7 +9431,7 @@@ void sctp_copy_sock(struct sock *newsk
sctp_sk(newsk)->reuse = sp->reuse;
newsk->sk_shutdown = sk->sk_shutdown;
- newsk->sk_destruct = sctp_destruct_sock;
+ newsk->sk_destruct = sk->sk_destruct;
newsk->sk_family = sk->sk_family;
newsk->sk_protocol = IPPROTO_SCTP;
newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
@@@ -9666,20 -9662,11 +9666,20 @@@ struct proto sctp_prot =
#if IS_ENABLED(CONFIG_IPV6)
-#include <net/transp_v6.h>
-static void sctp_v6_destroy_sock(struct sock *sk)
+static void sctp_v6_destruct_sock(struct sock *sk)
+{
+ sctp_destruct_common(sk);
+ inet6_sock_destruct(sk);
+}
+
+static int sctp_v6_init_sock(struct sock *sk)
{
- sctp_destroy_sock(sk);
- inet6_destroy_sock(sk);
+ int ret = sctp_init_sock(sk);
+
+ if (!ret)
+ sk->sk_destruct = sctp_v6_destruct_sock;
+
+ return ret;
}
struct proto sctpv6_prot = {
@@@ -9689,8 -9676,8 +9689,8 @@@
.disconnect = sctp_disconnect,
.accept = sctp_accept,
.ioctl = sctp_ioctl,
- .init = sctp_init_sock,
- .destroy = sctp_v6_destroy_sock,
+ .init = sctp_v6_init_sock,
+ .destroy = sctp_destroy_sock,
.shutdown = sctp_shutdown,
.setsockopt = sctp_setsockopt,
.getsockopt = sctp_getsockopt,
--
LinuxNextTracking
1
0
Name of failed tests
====================
master
------
* difference between net-next and batadv master
* headers
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=n DEBUG=y TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=n TRACING=n NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=n TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
maint
-----
* difference between net and batadv maint
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=n DAT=y DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=n MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=y MCAST=y BATMAN_V=y
* sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=n TRACING=y NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=n DEBUG=n TRACING=y NC=y MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=n TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=n DAT=y DEBUG=y TRACING=n NC=n MCAST=n BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=n DEBUG=y TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=n NC=n MCAST=y BATMAN_V=y
* sparse linux-6.1-rc1 cfg: BLA=y DAT=y DEBUG=y TRACING=y NC=y MCAST=n BATMAN_V=y
Output of different failed tests
================================
maint: difference between net and batadv maint
----------------------------------------------
net/net/batman-adv/bat_v_elp.c | 1
net/net/batman-adv/main.h | 2 -
net/net/batman-adv/netlink.c | 1
net/net/batman-adv/trace.h | 2 -
net/net/batman-adv/types.h | 39 --------------------------------
5 files changed, 2 insertions(+), 43 deletions(-)
master: difference between net-next and batadv master
-----------------------------------------------------
netnext/net/batman-adv/netlink.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
master: headers
---------------
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 636952ff..b97f7dda 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -8,6 +8,7 @@
#include "main.h" // IWYU pragma: keep
#include <linux/atomic.h>
+#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/container_of.h>
#include <linux/errno.h>
maint: sparse linux-6.0.3 cfg: BLA=n DAT=n DEBUG=n TRACING=n NC=n MCAST=n BATMAN_V=y
---------------------------------------------------------------------------
/home/build_test/build_env/tmp.GxLc7kW4nv/net/batman-adv/bat_v_elp.c: note: in included file:
./include/linux/ethtool.h:148:38: warning: nested flexible array
/home/build_test/build_env/tmp.GxLc7kW4nv/net/batman-adv/bat_v_elp.c:128:35: warning: using sizeof on a flexible structure
master: sparse linux-6.0.3 cfg: BLA=y DAT=y DEBUG=n TRACING=y NC=y MCAST=n BATMAN_V=y
---------------------------------------------------------------------------
/home/build_test/build_env/tmp.GxLc7kW4nv/net/batman-adv/bat_v_elp.c: note: in included file:
./include/linux/ethtool.h:148:38: warning: nested flexible array
Statistics
==========
master
------
Failed tests: 17
Started build tests: 158
Tested Linux versions: 9
Tested configs: 99
maint
-----
Failed tests: 17
Started build tests: 206
Tested Linux versions: 9
Tested configs: 107
1
0
[linux-next] LinuxNextTracking branch, master, updated. next-20221107
by batmanï¼ open-mesh.org 07 Nov '22
by batmanï¼ open-mesh.org 07 Nov '22
07 Nov '22
The following commit has been merged in the master branch:
commit ee276fa4f314c1deb5b6a605d0ed844867e1e5bb
Author: Jason A. Donenfeld <Jason(a)zx2c4.com>
Date: Sun Oct 9 20:44:02 2022 -0600
treewide: use get_random_u32_below() instead of deprecated function
This is a simple mechanical transformation done by:
@@
expression E;
@@
- prandom_u32_max
+ get_random_u32_below
(E)
Reviewed-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Acked-by: Darrick J. Wong <djwong(a)kernel.org> # for xfs
Reviewed-by: SeongJae Park <sj(a)kernel.org> # for damon
Reviewed-by: Jason Gunthorpe <jgg(a)nvidia.com> # for infiniband
Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com>
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index a2b31d91a1b6..f811733a8fc5 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -371,7 +371,7 @@ static unsigned long sigpage_addr(const struct mm_struct *mm,
slots = ((last - first) >> PAGE_SHIFT) + 1;
- offset = prandom_u32_max(slots);
+ offset = get_random_u32_below(slots);
addr = first + (offset << PAGE_SHIFT);
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 044a7d7f1f6a..1395a1638427 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -591,7 +591,7 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index 2526b68f1c0f..77952d814bad 100644
--- a/arch/loongarch/kernel/process.c
+++ b/arch/loongarch/kernel/process.c
@@ -293,7 +293,7 @@ unsigned long stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & STACK_ALIGN;
}
diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c
index 8c9826062652..eaebd2e0f725 100644
--- a/arch/loongarch/kernel/vdso.c
+++ b/arch/loongarch/kernel/vdso.c
@@ -78,7 +78,7 @@ static unsigned long vdso_base(void)
unsigned long base = STACK_TOP;
if (current->flags & PF_RANDOMIZE) {
- base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
+ base += get_random_u32_below(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index bbe9ce471791..093dbbd6b843 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -711,7 +711,7 @@ unsigned long mips_stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ALMASK;
}
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index 5fd9bf1d596c..f6d40e43f108 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -79,7 +79,7 @@ static unsigned long vdso_base(void)
}
if (current->flags & PF_RANDOMIZE) {
- base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
+ base += get_random_u32_below(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
diff --git a/arch/parisc/kernel/vdso.c b/arch/parisc/kernel/vdso.c
index 47e5960a2f96..c5cbfce7a84c 100644
--- a/arch/parisc/kernel/vdso.c
+++ b/arch/parisc/kernel/vdso.c
@@ -75,7 +75,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
map_base = mm->mmap_base;
if (current->flags & PF_RANDOMIZE)
- map_base -= prandom_u32_max(0x20) * PAGE_SIZE;
+ map_base -= get_random_u32_below(0x20) * PAGE_SIZE;
vdso_text_start = get_unmapped_area(NULL, map_base, vdso_text_len, 0, 0);
diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c
index 273c527868db..c61a874a3a5c 100644
--- a/arch/powerpc/crypto/crc-vpmsum_test.c
+++ b/arch/powerpc/crypto/crc-vpmsum_test.c
@@ -77,8 +77,8 @@ static int __init crc_test_init(void)
pr_info("crc-vpmsum_test begins, %lu iterations\n", iterations);
for (i=0; i<iterations; i++) {
- size_t offset = prandom_u32_max(16);
- size_t len = prandom_u32_max(MAX_CRC_LENGTH);
+ size_t offset = get_random_u32_below(16);
+ size_t len = get_random_u32_below(MAX_CRC_LENGTH);
if (len <= offset)
continue;
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 67da147fe34d..fcf604370c66 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -2303,6 +2303,6 @@ void notrace __ppc64_runlatch_off(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 42af4b3aa02b..3f5d2db0b854 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -224,7 +224,7 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(PAGE_SIZE);
+ sp -= get_random_u32_below(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 3105ca5bd470..119328e1e2b3 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -227,7 +227,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned long len)
end -= len;
if (end > start) {
- offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
+ offset = get_random_u32_below(((end - start) >> PAGE_SHIFT) + 1);
addr = start + (offset << PAGE_SHIFT);
} else {
addr = start;
diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c
index ae9a86cb6f3d..136c78f28f8b 100644
--- a/arch/sparc/vdso/vma.c
+++ b/arch/sparc/vdso/vma.c
@@ -354,7 +354,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned int len)
unsigned int offset;
/* This loses some more bits than a modulo, but is cheaper */
- offset = prandom_u32_max(PTRS_PER_PTE);
+ offset = get_random_u32_below(PTRS_PER_PTE);
return start + (offset << PAGE_SHIFT);
}
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 010bc422a09d..e38f41444721 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -356,7 +356,7 @@ int singlestepping(void * t)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(8192);
+ sp -= get_random_u32_below(8192);
return sp & ~0xf;
}
#endif
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
index 311eae30e089..d45c5fcfeac2 100644
--- a/arch/x86/entry/vdso/vma.c
+++ b/arch/x86/entry/vdso/vma.c
@@ -327,7 +327,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned len)
end -= len;
if (end > start) {
- offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
+ offset = get_random_u32_below(((end - start) >> PAGE_SHIFT) + 1);
addr = start + (offset << PAGE_SHIFT);
} else {
addr = start;
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index c032edcd3d95..c09ae279ef32 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -53,7 +53,7 @@ static unsigned long int get_module_load_offset(void)
*/
if (module_load_offset == 0)
module_load_offset =
- (prandom_u32_max(1024) + 1) * PAGE_SIZE;
+ (get_random_u32_below(1024) + 1) * PAGE_SIZE;
mutex_unlock(&module_kaslr_mutex);
}
return module_load_offset;
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index c21b7347a26d..62671ccf0404 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -965,7 +965,7 @@ early_param("idle", idle_setup);
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= prandom_u32_max(8192);
+ sp -= get_random_u32_below(8192);
return sp & ~0xf;
}
diff --git a/arch/x86/mm/pat/cpa-test.c b/arch/x86/mm/pat/cpa-test.c
index 423b21e80929..3d2f7f0a6ed1 100644
--- a/arch/x86/mm/pat/cpa-test.c
+++ b/arch/x86/mm/pat/cpa-test.c
@@ -136,10 +136,10 @@ static int pageattr_test(void)
failed += print_split(&sa);
for (i = 0; i < NTEST; i++) {
- unsigned long pfn = prandom_u32_max(max_pfn_mapped);
+ unsigned long pfn = get_random_u32_below(max_pfn_mapped);
addr[i] = (unsigned long)__va(pfn << PAGE_SHIFT);
- len[i] = prandom_u32_max(NPAGES);
+ len[i] = get_random_u32_below(NPAGES);
len[i] = min_t(unsigned long, len[i], max_pfn_mapped - pfn - 1);
if (len[i] == 0)
diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c
index 3285e3af43e1..0f722f8f779b 100644
--- a/crypto/rsa-pkcs1pad.c
+++ b/crypto/rsa-pkcs1pad.c
@@ -253,7 +253,7 @@ static int pkcs1pad_encrypt(struct akcipher_request *req)
ps_end = ctx->key_size - req->src_len - 2;
req_ctx->in_buf[0] = 0x02;
for (i = 1; i < ps_end; i++)
- req_ctx->in_buf[i] = 1 + prandom_u32_max(255);
+ req_ctx->in_buf[i] = 1 + get_random_u32_below(255);
req_ctx->in_buf[ps_end] = 0x00;
pkcs1pad_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf,
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index bcd059caa1c8..079923d43ce2 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -855,9 +855,9 @@ static int prepare_keybuf(const u8 *key, unsigned int ksize,
/* Generate a random length in range [0, max_len], but prefer smaller values */
static unsigned int generate_random_length(unsigned int max_len)
{
- unsigned int len = prandom_u32_max(max_len + 1);
+ unsigned int len = get_random_u32_below(max_len + 1);
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
return len % 64;
case 1:
@@ -874,14 +874,14 @@ static void flip_random_bit(u8 *buf, size_t size)
{
size_t bitpos;
- bitpos = prandom_u32_max(size * 8);
+ bitpos = get_random_u32_below(size * 8);
buf[bitpos / 8] ^= 1 << (bitpos % 8);
}
/* Flip a random byte in the given nonempty data buffer */
static void flip_random_byte(u8 *buf, size_t size)
{
- buf[prandom_u32_max(size)] ^= 0xff;
+ buf[get_random_u32_below(size)] ^= 0xff;
}
/* Sometimes make some random changes to the given nonempty data buffer */
@@ -891,15 +891,15 @@ static void mutate_buffer(u8 *buf, size_t size)
size_t i;
/* Sometimes flip some bits */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size * 8);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size * 8);
for (i = 0; i < num_flips; i++)
flip_random_bit(buf, size);
}
/* Sometimes flip some bytes */
- if (prandom_u32_max(4) == 0) {
- num_flips = min_t(size_t, 1 << prandom_u32_max(8), size);
+ if (get_random_u32_below(4) == 0) {
+ num_flips = min_t(size_t, 1 << get_random_u32_below(8), size);
for (i = 0; i < num_flips; i++)
flip_random_byte(buf, size);
}
@@ -915,11 +915,11 @@ static void generate_random_bytes(u8 *buf, size_t count)
if (count == 0)
return;
- switch (prandom_u32_max(8)) { /* Choose a generation strategy */
+ switch (get_random_u32_below(8)) { /* Choose a generation strategy */
case 0:
case 1:
/* All the same byte, plus optional mutations */
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
b = 0x00;
break;
@@ -959,24 +959,24 @@ static char *generate_random_sgl_divisions(struct test_sg_division *divs,
unsigned int this_len;
const char *flushtype_str;
- if (div == &divs[max_divs - 1] || prandom_u32_max(2) == 0)
+ if (div == &divs[max_divs - 1] || get_random_u32_below(2) == 0)
this_len = remaining;
else
- this_len = 1 + prandom_u32_max(remaining);
+ this_len = 1 + get_random_u32_below(remaining);
div->proportion_of_total = this_len;
- if (prandom_u32_max(4) == 0)
- div->offset = (PAGE_SIZE - 128) + prandom_u32_max(128);
- else if (prandom_u32_max(2) == 0)
- div->offset = prandom_u32_max(32);
+ if (get_random_u32_below(4) == 0)
+ div->offset = (PAGE_SIZE - 128) + get_random_u32_below(128);
+ else if (get_random_u32_below(2) == 0)
+ div->offset = get_random_u32_below(32);
else
- div->offset = prandom_u32_max(PAGE_SIZE);
- if (prandom_u32_max(8) == 0)
+ div->offset = get_random_u32_below(PAGE_SIZE);
+ if (get_random_u32_below(8) == 0)
div->offset_relative_to_alignmask = true;
div->flush_type = FLUSH_TYPE_NONE;
if (gen_flushes) {
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
div->flush_type = FLUSH_TYPE_REIMPORT;
break;
@@ -988,7 +988,7 @@ static char *generate_random_sgl_divisions(struct test_sg_division *divs,
if (div->flush_type != FLUSH_TYPE_NONE &&
!(req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0)
+ get_random_u32_below(2) == 0)
div->nosimd = true;
switch (div->flush_type) {
@@ -1035,7 +1035,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
p += scnprintf(p, end - p, "random:");
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
case 1:
cfg->inplace_mode = OUT_OF_PLACE;
@@ -1050,12 +1050,12 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
break;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
cfg->req_flags |= CRYPTO_TFM_REQ_MAY_SLEEP;
p += scnprintf(p, end - p, " may_sleep");
}
- switch (prandom_u32_max(4)) {
+ switch (get_random_u32_below(4)) {
case 0:
cfg->finalization_type = FINALIZATION_TYPE_FINAL;
p += scnprintf(p, end - p, " use_final");
@@ -1071,7 +1071,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
}
if (!(cfg->req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32_max(2) == 0) {
+ get_random_u32_below(2) == 0) {
cfg->nosimd = true;
p += scnprintf(p, end - p, " nosimd");
}
@@ -1084,7 +1084,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
cfg->req_flags);
p += scnprintf(p, end - p, "]");
- if (cfg->inplace_mode == OUT_OF_PLACE && prandom_u32_max(2) == 0) {
+ if (cfg->inplace_mode == OUT_OF_PLACE && get_random_u32_below(2) == 0) {
p += scnprintf(p, end - p, " dst_divs=[");
p = generate_random_sgl_divisions(cfg->dst_divs,
ARRAY_SIZE(cfg->dst_divs),
@@ -1093,13 +1093,13 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
p += scnprintf(p, end - p, "]");
}
- if (prandom_u32_max(2) == 0) {
- cfg->iv_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->iv_offset = 1 + get_random_u32_below(MAX_ALGAPI_ALIGNMASK);
p += scnprintf(p, end - p, " iv_offset=%u", cfg->iv_offset);
}
- if (prandom_u32_max(2) == 0) {
- cfg->key_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
+ if (get_random_u32_below(2) == 0) {
+ cfg->key_offset = 1 + get_random_u32_below(MAX_ALGAPI_ALIGNMASK);
p += scnprintf(p, end - p, " key_offset=%u", cfg->key_offset);
}
@@ -1652,8 +1652,8 @@ static void generate_random_hash_testvec(struct shash_desc *desc,
vec->ksize = 0;
if (maxkeysize) {
vec->ksize = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->ksize = 1 + prandom_u32_max(maxkeysize);
+ if (get_random_u32_below(4) == 0)
+ vec->ksize = 1 + get_random_u32_below(maxkeysize);
generate_random_bytes((u8 *)vec->key, vec->ksize);
vec->setkey_error = crypto_shash_setkey(desc->tfm, vec->key,
@@ -2218,13 +2218,13 @@ static void mutate_aead_message(struct aead_testvec *vec, bool aad_iv,
const unsigned int aad_tail_size = aad_iv ? ivsize : 0;
const unsigned int authsize = vec->clen - vec->plen;
- if (prandom_u32_max(2) == 0 && vec->alen > aad_tail_size) {
+ if (get_random_u32_below(2) == 0 && vec->alen > aad_tail_size) {
/* Mutate the AAD */
flip_random_bit((u8 *)vec->assoc, vec->alen - aad_tail_size);
- if (prandom_u32_max(2) == 0)
+ if (get_random_u32_below(2) == 0)
return;
}
- if (prandom_u32_max(2) == 0) {
+ if (get_random_u32_below(2) == 0) {
/* Mutate auth tag (assuming it's at the end of ciphertext) */
flip_random_bit((u8 *)vec->ctext + vec->plen, authsize);
} else {
@@ -2249,7 +2249,7 @@ static void generate_aead_message(struct aead_request *req,
const unsigned int ivsize = crypto_aead_ivsize(tfm);
const unsigned int authsize = vec->clen - vec->plen;
const bool inauthentic = (authsize >= MIN_COLLISION_FREE_AUTHSIZE) &&
- (prefer_inauthentic || prandom_u32_max(4) == 0);
+ (prefer_inauthentic || get_random_u32_below(4) == 0);
/* Generate the AAD. */
generate_random_bytes((u8 *)vec->assoc, vec->alen);
@@ -2257,7 +2257,7 @@ static void generate_aead_message(struct aead_request *req,
/* Avoid implementation-defined behavior. */
memcpy((u8 *)vec->assoc + vec->alen - ivsize, vec->iv, ivsize);
- if (inauthentic && prandom_u32_max(2) == 0) {
+ if (inauthentic && get_random_u32_below(2) == 0) {
/* Generate a random ciphertext. */
generate_random_bytes((u8 *)vec->ctext, vec->clen);
} else {
@@ -2321,8 +2321,8 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_aead_setkey(tfm, vec->key, vec->klen);
@@ -2331,8 +2331,8 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* Tag length: in [0, maxauthsize], but usually choose maxauthsize */
authsize = maxauthsize;
- if (prandom_u32_max(4) == 0)
- authsize = prandom_u32_max(maxauthsize + 1);
+ if (get_random_u32_below(4) == 0)
+ authsize = get_random_u32_below(maxauthsize + 1);
if (prefer_inauthentic && authsize < MIN_COLLISION_FREE_AUTHSIZE)
authsize = MIN_COLLISION_FREE_AUTHSIZE;
if (WARN_ON(authsize > maxdatasize))
@@ -2342,7 +2342,7 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* AAD, plaintext, and ciphertext lengths */
total_len = generate_random_length(maxdatasize);
- if (prandom_u32_max(4) == 0)
+ if (get_random_u32_below(4) == 0)
vec->alen = 0;
else
vec->alen = generate_random_length(total_len);
@@ -2958,8 +2958,8 @@ static void generate_random_cipher_testvec(struct skcipher_request *req,
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32_max(4) == 0)
- vec->klen = prandom_u32_max(maxkeysize + 1);
+ if (get_random_u32_below(4) == 0)
+ vec->klen = get_random_u32_below(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_skcipher_setkey(tfm, vec->key, vec->klen);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index ee69d50ba4fd..3eccc6cd5004 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -781,7 +781,7 @@ static struct socket *drbd_wait_for_connect(struct drbd_connection *connection,
timeo = connect_int * HZ;
/* 28.5% random jitter */
- timeo += prandom_u32_max(2) ? timeo / 7 : -timeo / 7;
+ timeo += get_random_u32_below(2) ? timeo / 7 : -timeo / 7;
err = wait_for_completion_interruptible_timeout(&ad->door_bell, timeo);
if (err <= 0)
@@ -1004,7 +1004,7 @@ retry:
drbd_warn(connection, "Error receiving initial packet\n");
sock_release(s);
randomize:
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
goto retry;
}
}
diff --git a/drivers/bus/mhi/host/internal.h b/drivers/bus/mhi/host/internal.h
index 01fd10a399b6..c73621aabbd1 100644
--- a/drivers/bus/mhi/host/internal.h
+++ b/drivers/bus/mhi/host/internal.h
@@ -129,7 +129,7 @@ enum mhi_pm_state {
#define PRIMARY_CMD_RING 0
#define MHI_DEV_WAKE_DB 127
#define MHI_MAX_MTU 0xffff
-#define MHI_RANDOM_U32_NONZERO(bmsk) (prandom_u32_max(bmsk) + 1)
+#define MHI_RANDOM_U32_NONZERO(bmsk) (get_random_u32_below(bmsk) + 1)
enum mhi_er_type {
MHI_ER_TYPE_INVALID = 0x0,
diff --git a/drivers/dma-buf/st-dma-fence-chain.c b/drivers/dma-buf/st-dma-fence-chain.c
index 0a9b099d0518..9fbad7317d9b 100644
--- a/drivers/dma-buf/st-dma-fence-chain.c
+++ b/drivers/dma-buf/st-dma-fence-chain.c
@@ -400,7 +400,7 @@ static int __find_race(void *arg)
struct dma_fence *fence = dma_fence_get(data->fc.tail);
int seqno;
- seqno = prandom_u32_max(data->fc.chain_length) + 1;
+ seqno = get_random_u32_below(data->fc.chain_length) + 1;
err = dma_fence_chain_find_seqno(&fence, seqno);
if (err) {
@@ -429,7 +429,7 @@ static int __find_race(void *arg)
dma_fence_put(fence);
signal:
- seqno = prandom_u32_max(data->fc.chain_length - 1);
+ seqno = get_random_u32_below(data->fc.chain_length - 1);
dma_fence_signal(data->fc.fences[seqno]);
cond_resched();
}
@@ -637,7 +637,7 @@ static void randomise_fences(struct fence_chains *fc)
while (--count) {
unsigned int swp;
- swp = prandom_u32_max(count + 1);
+ swp = get_random_u32_below(count + 1);
if (swp == count)
continue;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 845023c14eb3..29d2459bcc90 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -2424,7 +2424,7 @@ gen8_dispatch_bsd_engine(struct drm_i915_private *dev_priv,
/* Check whether the file_priv has already selected one ring. */
if ((int)file_priv->bsd_engine < 0)
file_priv->bsd_engine =
- prandom_u32_max(num_vcs_engines(dev_priv));
+ get_random_u32_below(num_vcs_engines(dev_priv));
return file_priv->bsd_engine;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index c718e6dc40b5..45b605e32c87 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -3689,7 +3689,7 @@ static void virtual_engine_initial_hint(struct virtual_engine *ve)
* NB This does not force us to execute on this engine, it will just
* typically be the first we inspect for submission.
*/
- swp = prandom_u32_max(ve->num_siblings);
+ swp = get_random_u32_below(ve->num_siblings);
if (swp)
swap(ve->siblings[swp], ve->siblings[0]);
}
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index 9a4a7fb55582..b9a164efd6ae 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -38,7 +38,7 @@ static int __iopagetest(struct intel_memory_region *mem,
u8 value, resource_size_t offset,
const void *caller)
{
- int byte = prandom_u32_max(pagesize);
+ int byte = get_random_u32_below(pagesize);
u8 result[3];
memset_io(va, value, pagesize); /* or GPF! */
@@ -92,7 +92,7 @@ static int iopagetest(struct intel_memory_region *mem,
static resource_size_t random_page(resource_size_t last)
{
/* Limited to low 44b (16TiB), but should suffice for a spot check */
- return prandom_u32_max(last >> PAGE_SHIFT) << PAGE_SHIFT;
+ return get_random_u32_below(last >> PAGE_SHIFT) << PAGE_SHIFT;
}
static int iomemtest(struct intel_memory_region *mem,
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 26d1772179b8..dd1c703b10df 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3807,7 +3807,7 @@ static int cma_alloc_any_port(enum rdma_ucm_port_space ps,
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32_max(remaining) + low;
+ rover = get_random_u32_below(remaining) + low;
retry:
if (last_used_port != rover) {
struct rdma_bind_list *bind_list;
diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c
index 280d61466855..e2188b335e76 100644
--- a/drivers/infiniband/hw/cxgb4/id_table.c
+++ b/drivers/infiniband/hw/cxgb4/id_table.c
@@ -54,7 +54,7 @@ u32 c4iw_id_alloc(struct c4iw_id_table *alloc)
if (obj < alloc->max) {
if (alloc->flags & C4IW_ID_TABLE_F_RANDOM)
- alloc->last += prandom_u32_max(RANDOM_SKIP);
+ alloc->last += get_random_u32_below(RANDOM_SKIP);
else
alloc->last = obj + 1;
if (alloc->last >= alloc->max)
@@ -85,7 +85,7 @@ int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
alloc->start = start;
alloc->flags = flags;
if (flags & C4IW_ID_TABLE_F_RANDOM)
- alloc->last = prandom_u32_max(RANDOM_SKIP);
+ alloc->last = get_random_u32_below(RANDOM_SKIP);
else
alloc->last = 0;
alloc->max = num;
diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c
index 480c062dd04f..b37d2a81584d 100644
--- a/drivers/infiniband/hw/hns/hns_roce_ah.c
+++ b/drivers/infiniband/hw/hns/hns_roce_ah.c
@@ -41,8 +41,8 @@ static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
u16 sport;
if (!fl)
- sport = prandom_u32_max(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
- IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
+ sport = get_random_u32_below(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX +
+ 1 - IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
IB_ROCE_UDP_ENCAP_VALID_PORT_MIN;
else
sport = rdma_flow_label_to_udp_sport(fl);
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 8546b8816524..ab75b690ad08 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1517,7 +1517,7 @@ static void rtrs_clt_err_recovery_work(struct work_struct *work)
rtrs_clt_stop_and_destroy_conns(clt_path);
queue_delayed_work(rtrs_wq, &clt_path->reconnect_dwork,
msecs_to_jiffies(delay_ms +
- prandom_u32_max(RTRS_RECONNECT_SEED)));
+ get_random_u32_below(RTRS_RECONNECT_SEED)));
}
static struct rtrs_clt_path *alloc_path(struct rtrs_clt_sess *clt,
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 3427555b0cca..32e21ba64357 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -401,7 +401,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
}
if (bypass_torture_test(dc)) {
- if (prandom_u32_max(4) == 3)
+ if (get_random_u32_below(4) == 3)
goto skip;
else
goto rescale;
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
index 303d02b1d71c..a366566f22c3 100644
--- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
+++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
@@ -872,7 +872,7 @@ static void precalculate_color(struct tpg_data *tpg, int k)
} else if (tpg->pattern == TPG_PAT_NOISE) {
r = g = b = get_random_u8();
} else if (k == TPG_COLOR_RANDOM) {
- r = g = b = tpg->qual_offset + prandom_u32_max(196);
+ r = g = b = tpg->qual_offset + get_random_u32_below(196);
} else if (k >= TPG_COLOR_RAMP) {
r = g = b = k - TPG_COLOR_RAMP;
}
@@ -2286,7 +2286,7 @@ static void tpg_fill_params_extras(const struct tpg_data *tpg,
params->wss_width = tpg->crop.width;
params->wss_width = tpg_hscale_div(tpg, p, params->wss_width);
params->wss_random_offset =
- params->twopixsize * prandom_u32_max(tpg->src_width / 2);
+ params->twopixsize * get_random_u32_below(tpg->src_width / 2);
if (tpg->crop.left < tpg->border.left) {
left_pillar_width = tpg->border.left - tpg->crop.left;
@@ -2495,9 +2495,9 @@ static void tpg_fill_plane_pattern(const struct tpg_data *tpg,
linestart_newer = tpg->black_line[p];
} else if (tpg->pattern == TPG_PAT_NOISE || tpg->qual == TPG_QUAL_NOISE) {
linestart_older = tpg->random_line[p] +
- twopixsize * prandom_u32_max(tpg->src_width / 2);
+ twopixsize * get_random_u32_below(tpg->src_width / 2);
linestart_newer = tpg->random_line[p] +
- twopixsize * prandom_u32_max(tpg->src_width / 2);
+ twopixsize * get_random_u32_below(tpg->src_width / 2);
} else {
unsigned frame_line_old =
(frame_line + mv_vert_old) % tpg->src_height;
diff --git a/drivers/media/test-drivers/vidtv/vidtv_demod.c b/drivers/media/test-drivers/vidtv/vidtv_demod.c
index e7959ab1add8..d60c6d16beea 100644
--- a/drivers/media/test-drivers/vidtv/vidtv_demod.c
+++ b/drivers/media/test-drivers/vidtv/vidtv_demod.c
@@ -188,11 +188,11 @@ static void vidtv_demod_update_stats(struct dvb_frontend *fe)
* Also, usually, signal strength is a negative number in dBm.
*/
c->strength.stat[0].svalue = state->tuner_cnr;
- c->strength.stat[0].svalue -= prandom_u32_max(state->tuner_cnr / 50);
+ c->strength.stat[0].svalue -= get_random_u32_below(state->tuner_cnr / 50);
c->strength.stat[0].svalue -= 68000; /* Adjust to a better range */
c->cnr.stat[0].svalue = state->tuner_cnr;
- c->cnr.stat[0].svalue -= prandom_u32_max(state->tuner_cnr / 50);
+ c->cnr.stat[0].svalue -= get_random_u32_below(state->tuner_cnr / 50);
}
static int vidtv_demod_read_status(struct dvb_frontend *fe,
@@ -213,11 +213,11 @@ static int vidtv_demod_read_status(struct dvb_frontend *fe,
if (snr < cnr2qual->cnr_ok) {
/* eventually lose the TS lock */
- if (prandom_u32_max(100) < config->drop_tslock_prob_on_low_snr)
+ if (get_random_u32_below(100) < config->drop_tslock_prob_on_low_snr)
state->status = 0;
} else {
/* recover if the signal improves */
- if (prandom_u32_max(100) <
+ if (get_random_u32_below(100) <
config->recover_tslock_prob_on_good_snr)
state->status = FE_HAS_SIGNAL |
FE_HAS_CARRIER |
diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-cap.c b/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
index 690daada7db4..ee65d20314d3 100644
--- a/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-cap.c
@@ -693,7 +693,7 @@ static noinline_for_stack void vivid_thread_vid_cap_tick(struct vivid_dev *dev,
/* Drop a certain percentage of buffers. */
if (dev->perc_dropped_buffers &&
- prandom_u32_max(100) < dev->perc_dropped_buffers)
+ get_random_u32_below(100) < dev->perc_dropped_buffers)
goto update_mv;
spin_lock(&dev->slock);
diff --git a/drivers/media/test-drivers/vivid/vivid-kthread-out.c b/drivers/media/test-drivers/vivid/vivid-kthread-out.c
index 0833e021bb11..fac6208b51da 100644
--- a/drivers/media/test-drivers/vivid/vivid-kthread-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-kthread-out.c
@@ -51,7 +51,7 @@ static void vivid_thread_vid_out_tick(struct vivid_dev *dev)
/* Drop a certain percentage of buffers. */
if (dev->perc_dropped_buffers &&
- prandom_u32_max(100) < dev->perc_dropped_buffers)
+ get_random_u32_below(100) < dev->perc_dropped_buffers)
return;
spin_lock(&dev->slock);
diff --git a/drivers/media/test-drivers/vivid/vivid-radio-rx.c b/drivers/media/test-drivers/vivid/vivid-radio-rx.c
index 8bd09589fb15..79c1723bd84c 100644
--- a/drivers/media/test-drivers/vivid/vivid-radio-rx.c
+++ b/drivers/media/test-drivers/vivid/vivid-radio-rx.c
@@ -94,8 +94,8 @@ retry:
if (data_blk == 0 && dev->radio_rds_loop)
vivid_radio_rds_init(dev);
- if (perc && prandom_u32_max(100) < perc) {
- switch (prandom_u32_max(4)) {
+ if (perc && get_random_u32_below(100) < perc) {
+ switch (get_random_u32_below(4)) {
case 0:
rds.block |= V4L2_RDS_BLOCK_CORRECTED;
break;
diff --git a/drivers/media/test-drivers/vivid/vivid-sdr-cap.c b/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
index 0ae5628b86c9..a81f26b76988 100644
--- a/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-sdr-cap.c
@@ -90,7 +90,7 @@ static void vivid_thread_sdr_cap_tick(struct vivid_dev *dev)
/* Drop a certain percentage of buffers. */
if (dev->perc_dropped_buffers &&
- prandom_u32_max(100) < dev->perc_dropped_buffers)
+ get_random_u32_below(100) < dev->perc_dropped_buffers)
return;
spin_lock(&dev->slock);
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index 6cc32eb54f9d..c7f6e23df51e 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -221,7 +221,7 @@ static void vivid_fill_buff_noise(__s16 *tch_buf, int size)
static inline int get_random_pressure(void)
{
- return prandom_u32_max(VIVID_PRESSURE_LIMIT);
+ return get_random_u32_below(VIVID_PRESSURE_LIMIT);
}
static void vivid_tch_buf_set(struct v4l2_pix_format *f,
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 95fa8fb1d45f..a1efda85c6f2 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -97,8 +97,8 @@ static void mmc_should_fail_request(struct mmc_host *host,
!should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
return;
- data->error = data_errors[prandom_u32_max(ARRAY_SIZE(data_errors))];
- data->bytes_xfered = prandom_u32_max(data->bytes_xfered >> 9) << 9;
+ data->error = data_errors[get_random_u32_below(ARRAY_SIZE(data_errors))];
+ data->bytes_xfered = get_random_u32_below(data->bytes_xfered >> 9) << 9;
}
#else /* CONFIG_FAIL_MMC_REQUEST */
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index c78bbc22e0d1..6ef410053037 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1858,7 +1858,7 @@ static void dw_mci_start_fault_timer(struct dw_mci *host)
* Try to inject the error at random points during the data transfer.
*/
hrtimer_start(&host->fault_timer,
- ms_to_ktime(prandom_u32_max(25)),
+ ms_to_ktime(get_random_u32_below(25)),
HRTIMER_MODE_REL);
}
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index 672719023241..274a31b93100 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -1405,9 +1405,9 @@ static void ns_do_bit_flips(struct nandsim *ns, int num)
if (bitflips && get_random_u16() < (1 << 6)) {
int flips = 1;
if (bitflips > 1)
- flips = prandom_u32_max(bitflips) + 1;
+ flips = get_random_u32_below(bitflips) + 1;
while (flips--) {
- int pos = prandom_u32_max(num * 8);
+ int pos = get_random_u32_below(num * 8);
ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
NS_WARN("read_page: flipping bit %d in page %d "
"reading from %d ecc: corrected=%u failed=%u\n",
diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
index 440988562cfd..824cc1c03b6a 100644
--- a/drivers/mtd/tests/mtd_nandecctest.c
+++ b/drivers/mtd/tests/mtd_nandecctest.c
@@ -47,7 +47,7 @@ struct nand_ecc_test {
static void single_bit_error_data(void *error_data, void *correct_data,
size_t size)
{
- unsigned int offset = prandom_u32_max(size * BITS_PER_BYTE);
+ unsigned int offset = get_random_u32_below(size * BITS_PER_BYTE);
memcpy(error_data, correct_data, size);
__change_bit_le(offset, error_data);
@@ -58,9 +58,9 @@ static void double_bit_error_data(void *error_data, void *correct_data,
{
unsigned int offset[2];
- offset[0] = prandom_u32_max(size * BITS_PER_BYTE);
+ offset[0] = get_random_u32_below(size * BITS_PER_BYTE);
do {
- offset[1] = prandom_u32_max(size * BITS_PER_BYTE);
+ offset[1] = get_random_u32_below(size * BITS_PER_BYTE);
} while (offset[0] == offset[1]);
memcpy(error_data, correct_data, size);
@@ -71,7 +71,7 @@ static void double_bit_error_data(void *error_data, void *correct_data,
static unsigned int random_ecc_bit(size_t size)
{
- unsigned int offset = prandom_u32_max(3 * BITS_PER_BYTE);
+ unsigned int offset = get_random_u32_below(3 * BITS_PER_BYTE);
if (size == 256) {
/*
@@ -79,7 +79,7 @@ static unsigned int random_ecc_bit(size_t size)
* and 17th bit) in ECC code for 256 byte data block
*/
while (offset == 16 || offset == 17)
- offset = prandom_u32_max(3 * BITS_PER_BYTE);
+ offset = get_random_u32_below(3 * BITS_PER_BYTE);
}
return offset;
diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c
index 75b6ddc5dc4d..8062098930d6 100644
--- a/drivers/mtd/tests/stresstest.c
+++ b/drivers/mtd/tests/stresstest.c
@@ -46,7 +46,7 @@ static int rand_eb(void)
again:
/* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
- eb = prandom_u32_max(ebcnt - 1);
+ eb = get_random_u32_below(ebcnt - 1);
if (bbt[eb])
goto again;
return eb;
@@ -54,12 +54,12 @@ again:
static int rand_offs(void)
{
- return prandom_u32_max(bufsize);
+ return get_random_u32_below(bufsize);
}
static int rand_len(int offs)
{
- return prandom_u32_max(bufsize - offs);
+ return get_random_u32_below(bufsize - offs);
}
static int do_read(void)
@@ -118,7 +118,7 @@ static int do_write(void)
static int do_operation(void)
{
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
return do_read();
else
return do_write();
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index 908d0e088557..fcca6942dbdd 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -590,7 +590,7 @@ int ubi_dbg_power_cut(struct ubi_device *ubi, int caller)
if (ubi->dbg.power_cut_max > ubi->dbg.power_cut_min) {
range = ubi->dbg.power_cut_max - ubi->dbg.power_cut_min;
- ubi->dbg.power_cut_counter += prandom_u32_max(range);
+ ubi->dbg.power_cut_counter += get_random_u32_below(range);
}
return 0;
}
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index dc8d8f83657a..23676f32b681 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -73,7 +73,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_bitflips)
- return !prandom_u32_max(200);
+ return !get_random_u32_below(200);
return 0;
}
@@ -87,7 +87,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !prandom_u32_max(500);
+ return !get_random_u32_below(500);
return 0;
}
@@ -101,7 +101,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !prandom_u32_max(400);
+ return !get_random_u32_below(400);
return 0;
}
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index 2198e35d9e18..74bc053a2078 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -4105,7 +4105,7 @@ static int cnic_cm_alloc_mem(struct cnic_dev *dev)
for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
atomic_set(&cp->csk_tbl[i].ref_count, 0);
- port_id = prandom_u32_max(CNIC_LOCAL_PORT_RANGE);
+ port_id = get_random_u32_below(CNIC_LOCAL_PORT_RANGE);
if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
CNIC_LOCAL_PORT_MIN, port_id)) {
cnic_cm_free_mem(dev);
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
index a4256087ac82..ae6b17b96bf1 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
@@ -919,8 +919,8 @@ static int csk_wait_memory(struct chtls_dev *cdev,
current_timeo = *timeo_p;
noblock = (*timeo_p ? false : true);
if (csk_mem_free(cdev, sk)) {
- current_timeo = prandom_u32_max(HZ / 5) + 2;
- vm_wait = prandom_u32_max(HZ / 5) + 2;
+ current_timeo = get_random_u32_below(HZ / 5) + 2;
+ vm_wait = get_random_u32_below(HZ / 5) + 2;
}
add_wait_queue(sk_sleep(sk), &wait);
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 349b7b1dbbf2..b07513c61c35 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1758,7 +1758,7 @@ static int qca808x_phy_fast_retrain_config(struct phy_device *phydev)
static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev)
{
- u16 seed_value = prandom_u32_max(QCA808X_MASTER_SLAVE_SEED_RANGE);
+ u16 seed_value = get_random_u32_below(QCA808X_MASTER_SLAVE_SEED_RANGE);
return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
QCA808X_MASTER_SLAVE_SEED_CFG,
diff --git a/drivers/net/team/team_mode_random.c b/drivers/net/team/team_mode_random.c
index f3f8dd428402..53d0ce34b8ce 100644
--- a/drivers/net/team/team_mode_random.c
+++ b/drivers/net/team/team_mode_random.c
@@ -16,7 +16,7 @@ static bool rnd_transmit(struct team *team, struct sk_buff *skb)
struct team_port *port;
int port_index;
- port_index = prandom_u32_max(team->en_port_count);
+ port_index = get_random_u32_below(team->en_port_count);
port = team_get_port_by_index_rcu(team, port_index);
if (unlikely(!port))
goto drop;
diff --git a/drivers/net/wireguard/selftest/allowedips.c b/drivers/net/wireguard/selftest/allowedips.c
index 19eac00b2381..78a916f30c82 100644
--- a/drivers/net/wireguard/selftest/allowedips.c
+++ b/drivers/net/wireguard/selftest/allowedips.c
@@ -285,8 +285,8 @@ static __init bool randomized_test(void)
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
get_random_bytes(ip, 4);
- cidr = prandom_u32_max(32) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(32) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr,
peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
@@ -300,7 +300,7 @@ static __init bool randomized_test(void)
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 4);
get_random_bytes(mutate_mask, 4);
- mutate_amount = prandom_u32_max(32);
+ mutate_amount = get_random_u32_below(32);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
mutate_mask[k] = 0xff
@@ -311,8 +311,8 @@ static __init bool randomized_test(void)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
get_random_u8());
- cidr = prandom_u32_max(32) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(32) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t,
(struct in_addr *)mutated,
cidr, peer, &mutex) < 0) {
@@ -329,8 +329,8 @@ static __init bool randomized_test(void)
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
get_random_bytes(ip, 16);
- cidr = prandom_u32_max(128) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(128) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr,
peer, &mutex) < 0) {
pr_err("allowedips random self-test malloc: FAIL\n");
@@ -344,7 +344,7 @@ static __init bool randomized_test(void)
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 16);
get_random_bytes(mutate_mask, 16);
- mutate_amount = prandom_u32_max(128);
+ mutate_amount = get_random_u32_below(128);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
mutate_mask[k] = 0xff
@@ -355,8 +355,8 @@ static __init bool randomized_test(void)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
get_random_u8());
- cidr = prandom_u32_max(128) + 1;
- peer = peers[prandom_u32_max(NUM_PEERS)];
+ cidr = get_random_u32_below(128) + 1;
+ peer = peers[get_random_u32_below(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t,
(struct in6_addr *)mutated,
cidr, peer, &mutex) < 0) {
diff --git a/drivers/net/wireguard/timers.c b/drivers/net/wireguard/timers.c
index d54d32ac9bc4..b5706b6718b1 100644
--- a/drivers/net/wireguard/timers.c
+++ b/drivers/net/wireguard/timers.c
@@ -147,7 +147,7 @@ void wg_timers_data_sent(struct wg_peer *peer)
if (!timer_pending(&peer->timer_new_handshake))
mod_peer_timer(peer, &peer->timer_new_handshake,
jiffies + (KEEPALIVE_TIMEOUT + REKEY_TIMEOUT) * HZ +
- prandom_u32_max(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
+ get_random_u32_below(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
}
/* Should be called after an authenticated data packet is received. */
@@ -183,7 +183,7 @@ void wg_timers_handshake_initiated(struct wg_peer *peer)
{
mod_peer_timer(peer, &peer->timer_retransmit_handshake,
jiffies + REKEY_TIMEOUT * HZ +
- prandom_u32_max(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
+ get_random_u32_below(REKEY_TIMEOUT_JITTER_MAX_JIFFIES));
}
/* Should be called after a handshake response message is received and processed
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index 10d9d9c63b28..23c971b77965 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -1128,7 +1128,7 @@ static void brcmf_p2p_afx_handler(struct work_struct *work)
if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
/* 100ms ~ 300ms */
err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
- 100 * (1 + prandom_u32_max(3)));
+ 100 * (1 + get_random_u32_below(3)));
else
err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index de0c545d50fd..1696fbf1009a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1099,7 +1099,7 @@ static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
iwl_mvm_mac_ap_iterator, &data);
if (data.beacon_device_ts) {
- u32 rand = prandom_u32_max(64 - 36) + 36;
+ u32 rand = get_random_u32_below(64 - 36) + 36;
mvmvif->ap_beacon_time = data.beacon_device_ts +
ieee80211_tu_to_usec(data.beacon_int * rand /
100);
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 88dc66ee1c46..5565f67d6537 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -673,7 +673,7 @@ struct pci_dev *pci_p2pmem_find_many(struct device **clients, int num_clients)
}
if (dev_cnt)
- pdev = pci_dev_get(closest_pdevs[prandom_u32_max(dev_cnt)]);
+ pdev = pci_dev_get(closest_pdevs[get_random_u32_below(dev_cnt)]);
for (i = 0; i < dev_cnt; i++)
pci_dev_put(closest_pdevs[i]);
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 77917b339870..f21307537829 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -48,7 +48,7 @@ unsigned int zfcp_fc_port_scan_backoff(void)
{
if (!port_scan_backoff)
return 0;
- return prandom_u32_max(port_scan_backoff);
+ return get_random_u32_below(port_scan_backoff);
}
static void zfcp_fc_port_scan_time(struct zfcp_adapter *adapter)
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index ddc048069af2..5c8d1ba3f8f3 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -2233,7 +2233,7 @@ static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
fip->probe_tries++;
- wait = prandom_u32_max(FIP_VN_PROBE_WAIT);
+ wait = get_random_u32_below(FIP_VN_PROBE_WAIT);
} else
wait = FIP_VN_RLIM_INT;
mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
@@ -3125,7 +3125,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
fcoe_all_vn2vn, 0);
fip->port_ka_time = jiffies +
msecs_to_jiffies(FIP_VN_BEACON_INT +
- prandom_u32_max(FIP_VN_BEACON_FUZZ));
+ get_random_u32_below(FIP_VN_BEACON_FUZZ));
}
if (time_before(fip->port_ka_time, next_time))
next_time = fip->port_ka_time;
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index df2fe7bd26d1..f2ee49756df8 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -618,7 +618,7 @@ static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
sizeof(struct qedi_endpoint *)), GFP_KERNEL);
if (!qedi->ep_tbl)
return -ENOMEM;
- port_id = prandom_u32_max(QEDI_LOCAL_PORT_RANGE);
+ port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE);
if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
QEDI_LOCAL_PORT_MIN, port_id)) {
qedi_cm_free_mem(qedi);
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 697fc57bc711..4e476f1bc3c3 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -5695,16 +5695,16 @@ static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
u64 ns = jiffies_to_nsecs(delta_jiff);
if (sdebug_random && ns < U32_MAX) {
- ns = prandom_u32_max((u32)ns);
+ ns = get_random_u32_below((u32)ns);
} else if (sdebug_random) {
ns >>= 12; /* scale to 4 usec precision */
if (ns < U32_MAX) /* over 4 hours max */
- ns = prandom_u32_max((u32)ns);
+ ns = get_random_u32_below((u32)ns);
ns <<= 12;
}
kt = ns_to_ktime(ns);
} else { /* ndelay has a 4.2 second max */
- kt = sdebug_random ? prandom_u32_max((u32)ndelay) :
+ kt = sdebug_random ? get_random_u32_below((u32)ndelay) :
(u32)ndelay;
if (ndelay < INCLUSIVE_TIMING_MAX_NS) {
u64 d = ktime_get_boottime_ns() - ns_from_boot;
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 4af5e55abc15..fb255988dee8 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -362,7 +362,7 @@ static int ceph_fill_fragtree(struct inode *inode,
if (nsplits != ci->i_fragtree_nsplits) {
update = true;
} else if (nsplits) {
- i = prandom_u32_max(nsplits);
+ i = get_random_u32_below(nsplits);
id = le32_to_cpu(fragtree->splits[i].frag);
if (!__ceph_find_frag(ci, id))
update = true;
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 3fbabc98e1f7..7dac21ee6ce7 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -29,7 +29,7 @@ static int __mdsmap_get_random_mds(struct ceph_mdsmap *m, bool ignore_laggy)
return -1;
/* pick */
- n = prandom_u32_max(n);
+ n = get_random_u32_below(n);
for (j = 0, i = 0; i < m->possible_max_rank; i++) {
if (CEPH_MDS_IS_READY(i, ignore_laggy))
j++;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index f4944c4dee60..78b8686d9a4a 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -277,7 +277,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
int best_ndir = inodes_per_group;
int best_group = -1;
- parent_group = prandom_u32_max(ngroups);
+ parent_group = get_random_u32_below(ngroups);
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
desc = ext2_get_group_desc (sb, group, NULL);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index e9bc46684106..9fc1af8e19a3 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -465,7 +465,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
ext4fs_dirhash(parent, qstr->name, qstr->len, &hinfo);
parent_group = hinfo.hash % ngroups;
} else
- parent_group = prandom_u32_max(ngroups);
+ parent_group = get_random_u32_below(ngroups);
for (i = 0; i < ngroups; i++) {
g = (parent_group + i) % ngroups;
get_orlov_stats(sb, g, flex_size, &stats);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 7950904fbf04..106fb06e24e8 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3778,7 +3778,7 @@ cont_thread:
}
if (!progress) {
elr->lr_next_sched = jiffies +
- prandom_u32_max(EXT4_DEF_LI_MAX_START_DELAY * HZ);
+ get_random_u32_below(EXT4_DEF_LI_MAX_START_DELAY * HZ);
}
if (time_before(elr->lr_next_sched, next_wakeup))
next_wakeup = elr->lr_next_sched;
@@ -3925,8 +3925,7 @@ static struct ext4_li_request *ext4_li_request_new(struct super_block *sb,
* spread the inode table initialization requests
* better.
*/
- elr->lr_next_sched = jiffies + prandom_u32_max(
- EXT4_DEF_LI_MAX_START_DELAY * HZ);
+ elr->lr_next_sched = jiffies + get_random_u32_below(EXT4_DEF_LI_MAX_START_DELAY * HZ);
return elr;
}
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 4546e01b2ee0..536d332d9e2e 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -282,7 +282,7 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
/* let's select beginning hot/small space first in no_heap mode*/
if (f2fs_need_rand_seg(sbi))
- p->offset = prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ p->offset = get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
else if (test_opt(sbi, NOHEAP) &&
(type == CURSEG_HOT_DATA || IS_NODESEG(type)))
p->offset = 0;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index acf3d3fa4363..334415d946f8 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2534,7 +2534,7 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
sanity_check_seg_type(sbi, seg_type);
if (f2fs_need_rand_seg(sbi))
- return prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
+ return get_random_u32_below(MAIN_SECS(sbi) * sbi->segs_per_sec);
/* if segs_per_sec is large than 1, we need to keep original policy. */
if (__is_large_section(sbi))
@@ -2588,7 +2588,7 @@ static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
curseg->alloc_type = LFS;
if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
curseg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_below(sbi->max_fragment_chunk) + 1;
}
static int __next_free_blkoff(struct f2fs_sb_info *sbi,
@@ -2625,9 +2625,9 @@ static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
/* To allocate block chunks in different sizes, use random number */
if (--seg->fragment_remained_chunk <= 0) {
seg->fragment_remained_chunk =
- prandom_u32_max(sbi->max_fragment_chunk) + 1;
+ get_random_u32_below(sbi->max_fragment_chunk) + 1;
seg->next_blkoff +=
- prandom_u32_max(sbi->max_fragment_hole) + 1;
+ get_random_u32_below(sbi->max_fragment_hole) + 1;
}
}
}
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 3f128b9fdfbb..9c9d3f0e36a4 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2467,7 +2467,7 @@ error_dump:
static inline int chance(unsigned int n, unsigned int out_of)
{
- return !!(prandom_u32_max(out_of) + 1 <= n);
+ return !!(get_random_u32_below(out_of) + 1 <= n);
}
@@ -2485,13 +2485,13 @@ static int power_cut_emulated(struct ubifs_info *c, int lnum, int write)
if (chance(1, 2)) {
d->pc_delay = 1;
/* Fail within 1 minute */
- delay = prandom_u32_max(60000);
+ delay = get_random_u32_below(60000);
d->pc_timeout = jiffies;
d->pc_timeout += msecs_to_jiffies(delay);
ubifs_warn(c, "failing after %lums", delay);
} else {
d->pc_delay = 2;
- delay = prandom_u32_max(10000);
+ delay = get_random_u32_below(10000);
/* Fail within 10000 operations */
d->pc_cnt_max = delay;
ubifs_warn(c, "failing after %lu calls", delay);
@@ -2571,7 +2571,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf,
unsigned int from, to, ffs = chance(1, 2);
unsigned char *p = (void *)buf;
- from = prandom_u32_max(len);
+ from = get_random_u32_below(len);
/* Corruption span max to end of write unit */
to = min(len, ALIGN(from + 1, c->max_write_size));
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index cfbc31f709f4..c4d079328b92 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1970,28 +1970,28 @@ static int dbg_populate_lsave(struct ubifs_info *c)
if (!dbg_is_chk_gen(c))
return 0;
- if (prandom_u32_max(4))
+ if (get_random_u32_below(4))
return 0;
for (i = 0; i < c->lsave_cnt; i++)
c->lsave[i] = c->main_first;
list_for_each_entry(lprops, &c->empty_list, list)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
list_for_each_entry(lprops, &c->freeable_list, list)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
list_for_each_entry(lprops, &c->frdi_idx_list, list)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = lprops->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_FREE - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
+ c->lsave[get_random_u32_below(c->lsave_cnt)] = heap->arr[i]->lnum;
return 1;
}
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 01362ad5f804..a55e04822d16 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -700,7 +700,7 @@ static int alloc_idx_lebs(struct ubifs_info *c, int cnt)
c->ilebs[c->ileb_cnt++] = lnum;
dbg_cmt("LEB %d", lnum);
}
- if (dbg_is_chk_index(c) && !prandom_u32_max(8))
+ if (dbg_is_chk_index(c) && !get_random_u32_below(8))
return -ENOSPC;
return 0;
}
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index 6261599bb389..a0221e9afa19 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -1520,7 +1520,7 @@ xfs_alloc_ag_vextent_lastblock(
#ifdef DEBUG
/* Randomly don't execute the first algorithm. */
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
return 0;
#endif
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 94db50eb706a..5118dedf9267 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -636,7 +636,7 @@ xfs_ialloc_ag_alloc(
/* randomly do sparse inode allocations */
if (xfs_has_sparseinodes(tp->t_mountp) &&
igeo->ialloc_min_blks < igeo->ialloc_blks)
- do_sparse = prandom_u32_max(2);
+ do_sparse = get_random_u32_below(2);
#endif
/*
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 7db588ed0be5..8fc58abffb8b 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -274,7 +274,7 @@ xfs_errortag_test(
ASSERT(error_tag < XFS_ERRTAG_MAX);
randfactor = mp->m_errortag[error_tag];
- if (!randfactor || prandom_u32_max(randfactor))
+ if (!randfactor || get_random_u32_below(randfactor))
return false;
xfs_warn_ratelimited(mp,
diff --git a/include/linux/damon.h b/include/linux/damon.h
index 620ada094c3b..84525b9cdf6e 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -21,7 +21,7 @@
/* Get a random number in [l, r) */
static inline unsigned long damon_rand(unsigned long l, unsigned long r)
{
- return l + prandom_u32_max(r - l);
+ return l + get_random_u32_below(r - l);
}
/**
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index efef68c9352a..bb0ee80526b2 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -516,7 +516,7 @@ static inline int node_random(const nodemask_t *maskp)
bit = first_node(*maskp);
break;
default:
- bit = find_nth_bit(maskp->bits, MAX_NUMNODES, prandom_u32_max(w));
+ bit = find_nth_bit(maskp->bits, MAX_NUMNODES, get_random_u32_below(w));
break;
}
return bit;
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 25a54e04560e..38159f39e2af 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -1032,7 +1032,7 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
hdr->size = size;
hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
PAGE_SIZE - sizeof(*hdr));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
/* Leave a random number of instructions before BPF code. */
*image_ptr = &hdr->image[start];
@@ -1094,7 +1094,7 @@ bpf_jit_binary_pack_alloc(unsigned int proglen, u8 **image_ptr,
hole = min_t(unsigned int, size - (proglen + sizeof(*ro_header)),
BPF_PROG_CHUNK_SIZE - sizeof(*ro_header));
- start = prandom_u32_max(hole) & ~(alignment - 1);
+ start = get_random_u32_below(hole) & ~(alignment - 1);
*image_ptr = &ro_header->image[start];
*rw_image = &(*rw_header)->image[start];
diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c
index 1740ce389e7f..7b619f16a492 100644
--- a/kernel/kcsan/selftest.c
+++ b/kernel/kcsan/selftest.c
@@ -31,8 +31,8 @@ static bool __init test_encode_decode(void)
int i;
for (i = 0; i < ITERS_PER_TEST; ++i) {
- size_t size = prandom_u32_max(MAX_ENCODABLE_SIZE) + 1;
- bool is_write = !!prandom_u32_max(2);
+ size_t size = get_random_u32_below(MAX_ENCODABLE_SIZE) + 1;
+ bool is_write = !!get_random_u32_below(2);
unsigned long verif_masked_addr;
long encoded_watchpoint;
bool verif_is_write;
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 43efb2a04160..29dc253d03af 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -399,7 +399,7 @@ static int *get_random_order(int count)
order[n] = n;
for (n = count - 1; n > 1; n--) {
- r = prandom_u32_max(n + 1);
+ r = get_random_u32_below(n + 1);
if (r != n) {
tmp = order[n];
order[n] = order[r];
@@ -538,7 +538,7 @@ static void stress_one_work(struct work_struct *work)
{
struct stress *stress = container_of(work, typeof(*stress), work);
const int nlocks = stress->nlocks;
- struct ww_mutex *lock = stress->locks + prandom_u32_max(nlocks);
+ struct ww_mutex *lock = stress->locks + get_random_u32_below(nlocks);
int err;
do {
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 8058bec87ace..9cf32ccda715 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -310,7 +310,7 @@ static void clocksource_verify_choose_cpus(void)
* CPUs that are currently online.
*/
for (i = 1; i < n; i++) {
- cpu = prandom_u32_max(nr_cpu_ids);
+ cpu = get_random_u32_below(nr_cpu_ids);
cpu = cpumask_next(cpu - 1, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = cpumask_first(cpu_online_mask);
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 96e092de5b72..9f53408c545d 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -139,7 +139,7 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
return false;
}
- if (attr->probability <= prandom_u32_max(100))
+ if (attr->probability <= get_random_u32_below(100))
return false;
if (!fail_stacktrace(attr))
diff --git a/lib/find_bit_benchmark.c b/lib/find_bit_benchmark.c
index 7c3c011abd29..d3fb09e6eff1 100644
--- a/lib/find_bit_benchmark.c
+++ b/lib/find_bit_benchmark.c
@@ -174,8 +174,8 @@ static int __init find_bit_test(void)
bitmap_zero(bitmap2, BITMAP_LEN);
while (nbits--) {
- __set_bit(prandom_u32_max(BITMAP_LEN), bitmap);
- __set_bit(prandom_u32_max(BITMAP_LEN), bitmap2);
+ __set_bit(get_random_u32_below(BITMAP_LEN), bitmap);
+ __set_bit(get_random_u32_below(BITMAP_LEN), bitmap2);
}
test_find_next_bit(bitmap, BITMAP_LEN);
diff --git a/lib/kobject.c b/lib/kobject.c
index a0b2dbfcfa23..af1f5f2954d4 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -694,7 +694,7 @@ static void kobject_release(struct kref *kref)
{
struct kobject *kobj = container_of(kref, struct kobject, kref);
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
- unsigned long delay = HZ + HZ * prandom_u32_max(4);
+ unsigned long delay = HZ + HZ * get_random_u32_below(4);
pr_info("kobject: '%s' (%p): %s, parent %p (delayed %ld)\n",
kobject_name(kobj), kobj, __func__, kobj->parent, delay);
INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);
diff --git a/lib/reed_solomon/test_rslib.c b/lib/reed_solomon/test_rslib.c
index 848e7eb5da92..75cb1adac884 100644
--- a/lib/reed_solomon/test_rslib.c
+++ b/lib/reed_solomon/test_rslib.c
@@ -183,7 +183,7 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
do {
/* Must not choose the same location twice */
- errloc = prandom_u32_max(len);
+ errloc = get_random_u32_below(len);
} while (errlocs[errloc] != 0);
errlocs[errloc] = 1;
@@ -194,12 +194,12 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
for (i = 0; i < eras; i++) {
do {
/* Must not choose the same location twice */
- errloc = prandom_u32_max(len);
+ errloc = get_random_u32_below(len);
} while (errlocs[errloc] != 0);
derrlocs[i] = errloc;
- if (ewsc && prandom_u32_max(2)) {
+ if (ewsc && get_random_u32_below(2)) {
/* Erasure with the symbol intact */
errlocs[errloc] = 2;
} else {
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index 7280ae8ca88c..58de526ff051 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -21,7 +21,7 @@ static int init_alloc_hint(struct sbitmap *sb, gfp_t flags)
int i;
for_each_possible_cpu(i)
- *per_cpu_ptr(sb->alloc_hint, i) = prandom_u32_max(depth);
+ *per_cpu_ptr(sb->alloc_hint, i) = get_random_u32_below(depth);
}
return 0;
}
@@ -33,7 +33,7 @@ static inline unsigned update_alloc_hint_before_get(struct sbitmap *sb,
hint = this_cpu_read(*sb->alloc_hint);
if (unlikely(hint >= depth)) {
- hint = depth ? prandom_u32_max(depth) : 0;
+ hint = depth ? get_random_u32_below(depth) : 0;
this_cpu_write(*sb->alloc_hint, hint);
}
diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c
index 86fadd3ba08c..41d3447bc3b4 100644
--- a/lib/test-string_helpers.c
+++ b/lib/test-string_helpers.c
@@ -587,7 +587,7 @@ static int __init test_string_helpers_init(void)
for (i = 0; i < UNESCAPE_ALL_MASK + 1; i++)
test_string_unescape("unescape", i, false);
test_string_unescape("unescape inplace",
- prandom_u32_max(UNESCAPE_ANY + 1), true);
+ get_random_u32_below(UNESCAPE_ANY + 1), true);
/* Without dictionary */
for (i = 0; i < ESCAPE_ALL_MASK + 1; i++)
diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 0927f44cd478..efc50fd30a44 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -149,7 +149,7 @@ static void __init test_hexdump(size_t len, int rowsize, int groupsize,
static void __init test_hexdump_set(int rowsize, bool ascii)
{
size_t d = min_t(size_t, sizeof(data_b), rowsize);
- size_t len = prandom_u32_max(d) + 1;
+ size_t len = get_random_u32_below(d) + 1;
test_hexdump(len, rowsize, 4, ascii);
test_hexdump(len, rowsize, 2, ascii);
@@ -208,11 +208,11 @@ static void __init test_hexdump_overflow(size_t buflen, size_t len,
static void __init test_hexdump_overflow_set(size_t buflen, bool ascii)
{
unsigned int i = 0;
- int rs = (prandom_u32_max(2) + 1) * 16;
+ int rs = (get_random_u32_below(2) + 1) * 16;
do {
int gs = 1 << i;
- size_t len = prandom_u32_max(rs) + gs;
+ size_t len = get_random_u32_below(rs) + gs;
test_hexdump_overflow(buflen, rounddown(len, gs), rs, gs, ascii);
} while (i++ < 3);
@@ -223,11 +223,11 @@ static int __init test_hexdump_init(void)
unsigned int i;
int rowsize;
- rowsize = (prandom_u32_max(2) + 1) * 16;
+ rowsize = (get_random_u32_below(2) + 1) * 16;
for (i = 0; i < 16; i++)
test_hexdump_set(rowsize, false);
- rowsize = (prandom_u32_max(2) + 1) * 16;
+ rowsize = (get_random_u32_below(2) + 1) * 16;
for (i = 0; i < 16; i++)
test_hexdump_set(rowsize, true);
diff --git a/lib/test_list_sort.c b/lib/test_list_sort.c
index 19ff229b9c3a..cc5f335f29b5 100644
--- a/lib/test_list_sort.c
+++ b/lib/test_list_sort.c
@@ -71,7 +71,7 @@ static void list_sort_test(struct kunit *test)
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, el);
/* force some equivalencies */
- el->value = prandom_u32_max(TEST_LIST_LEN / 3);
+ el->value = get_random_u32_below(TEST_LIST_LEN / 3);
el->serial = i;
el->poison1 = TEST_POISON1;
el->poison2 = TEST_POISON2;
diff --git a/lib/test_printf.c b/lib/test_printf.c
index 4bd15a593fbd..6d10187eddac 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -126,7 +126,7 @@ __test(const char *expect, int elen, const char *fmt, ...)
* be able to print it as expected.
*/
failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap);
- rand = 1 + prandom_u32_max(elen+1);
+ rand = 1 + get_random_u32_below(elen + 1);
/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
failed_tests += do_test(rand, expect, elen, fmt, ap);
failed_tests += do_test(0, expect, elen, fmt, ap);
diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c
index f2ba5787055a..6a8e445c8b55 100644
--- a/lib/test_rhashtable.c
+++ b/lib/test_rhashtable.c
@@ -368,8 +368,8 @@ static int __init test_rhltable(unsigned int entries)
pr_info("test %d random rhlist add/delete operations\n", entries);
for (j = 0; j < entries; j++) {
- u32 i = prandom_u32_max(entries);
- u32 prand = prandom_u32_max(4);
+ u32 i = get_random_u32_below(entries);
+ u32 prand = get_random_u32_below(4);
cond_resched();
@@ -396,7 +396,7 @@ static int __init test_rhltable(unsigned int entries)
}
if (prand & 2) {
- i = prandom_u32_max(entries);
+ i = get_random_u32_below(entries);
if (test_bit(i, obj_in_table)) {
err = rhltable_remove(&rhlt, &rhl_test_objects[i].list_node, test_rht_params);
WARN(err, "cannot remove element at slot %d", i);
diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index cf7780572f5b..104f09ea5fcc 100644
--- a/lib/test_vmalloc.c
+++ b/lib/test_vmalloc.c
@@ -151,7 +151,7 @@ static int random_size_alloc_test(void)
int i;
for (i = 0; i < test_loop_count; i++) {
- n = prandom_u32_max(100) + 1;
+ n = get_random_u32_below(100) + 1;
p = vmalloc(n * PAGE_SIZE);
if (!p)
@@ -291,12 +291,12 @@ pcpu_alloc_test(void)
return -1;
for (i = 0; i < 35000; i++) {
- size = prandom_u32_max(PAGE_SIZE / 4) + 1;
+ size = get_random_u32_below(PAGE_SIZE / 4) + 1;
/*
* Maximum PAGE_SIZE
*/
- align = 1 << (prandom_u32_max(11) + 1);
+ align = 1 << (get_random_u32_below(11) + 1);
pcpu[i] = __alloc_percpu(size, align);
if (!pcpu[i])
@@ -391,7 +391,7 @@ static void shuffle_array(int *arr, int n)
for (i = n - 1; i > 0; i--) {
/* Cut the range. */
- j = prandom_u32_max(i);
+ j = get_random_u32_below(i);
/* Swap indexes. */
swap(arr[i], arr[j]);
diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c
index 0d59098f0876..640f9c7f8e44 100644
--- a/mm/kasan/kasan_test.c
+++ b/mm/kasan/kasan_test.c
@@ -1299,7 +1299,7 @@ static void match_all_not_assigned(struct kunit *test)
KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
for (i = 0; i < 256; i++) {
- size = prandom_u32_max(1024) + 1;
+ size = get_random_u32_below(1024) + 1;
ptr = kmalloc(size, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
@@ -1308,7 +1308,7 @@ static void match_all_not_assigned(struct kunit *test)
}
for (i = 0; i < 256; i++) {
- order = prandom_u32_max(4) + 1;
+ order = get_random_u32_below(4) + 1;
pages = alloc_pages(GFP_KERNEL, order);
ptr = page_address(pages);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
@@ -1321,7 +1321,7 @@ static void match_all_not_assigned(struct kunit *test)
return;
for (i = 0; i < 256; i++) {
- size = prandom_u32_max(1024) + 1;
+ size = get_random_u32_below(1024) + 1;
ptr = vmalloc(size);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
diff --git a/mm/kfence/core.c b/mm/kfence/core.c
index 141788858b70..6cbd93f2007b 100644
--- a/mm/kfence/core.c
+++ b/mm/kfence/core.c
@@ -360,9 +360,9 @@ static void *kfence_guarded_alloc(struct kmem_cache *cache, size_t size, gfp_t g
unsigned long flags;
struct slab *slab;
void *addr;
- const bool random_right_allocate = prandom_u32_max(2);
+ const bool random_right_allocate = get_random_u32_below(2);
const bool random_fault = CONFIG_KFENCE_STRESS_TEST_FAULTS &&
- !prandom_u32_max(CONFIG_KFENCE_STRESS_TEST_FAULTS);
+ !get_random_u32_below(CONFIG_KFENCE_STRESS_TEST_FAULTS);
/* Try to obtain a free object. */
raw_spin_lock_irqsave(&kfence_freelist_lock, flags);
diff --git a/mm/kfence/kfence_test.c b/mm/kfence/kfence_test.c
index a97bffe0cc3e..20028c179796 100644
--- a/mm/kfence/kfence_test.c
+++ b/mm/kfence/kfence_test.c
@@ -532,8 +532,8 @@ static void test_free_bulk(struct kunit *test)
int iter;
for (iter = 0; iter < 5; iter++) {
- const size_t size = setup_test_cache(test, 8 + prandom_u32_max(300), 0,
- (iter & 1) ? ctor_set_x : NULL);
+ const size_t size = setup_test_cache(test, 8 + get_random_u32_below(300),
+ 0, (iter & 1) ? ctor_set_x : NULL);
void *objects[] = {
test_alloc(test, size, GFP_KERNEL, ALLOCATE_RIGHT),
test_alloc(test, size, GFP_KERNEL, ALLOCATE_NONE),
diff --git a/mm/slub.c b/mm/slub.c
index 157527d7101b..7cd2c657030a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1881,7 +1881,7 @@ static bool shuffle_freelist(struct kmem_cache *s, struct slab *slab)
return false;
freelist_count = oo_objects(s->oo);
- pos = prandom_u32_max(freelist_count);
+ pos = get_random_u32_below(freelist_count);
page_limit = slab->objects * s->size;
start = fixup_red_left(s, slab_address(slab));
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 5fc1237a9f21..e9318305a24a 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -773,7 +773,7 @@ static void set_cluster_next(struct swap_info_struct *si, unsigned long next)
if (si->highest_bit <= si->lowest_bit)
return;
next = si->lowest_bit +
- prandom_u32_max(si->highest_bit - si->lowest_bit + 1);
+ get_random_u32_below(si->highest_bit - si->lowest_bit + 1);
next = ALIGN_DOWN(next, SWAP_ADDRESS_SPACE_PAGES);
next = max_t(unsigned int, next, si->lowest_bit);
}
@@ -3089,7 +3089,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
*/
for_each_possible_cpu(cpu) {
per_cpu(*p->cluster_next_cpu, cpu) =
- 1 + prandom_u32_max(p->highest_bit);
+ 1 + get_random_u32_below(p->highest_bit);
}
nr_cluster = DIV_ROUND_UP(maxpages, SWAPFILE_CLUSTER);
diff --git a/net/802/garp.c b/net/802/garp.c
index fc9eb02a912f..77aac2763835 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -407,7 +407,7 @@ static void garp_join_timer_arm(struct garp_applicant *app)
{
unsigned long delay;
- delay = prandom_u32_max(msecs_to_jiffies(garp_join_time));
+ delay = get_random_u32_below(msecs_to_jiffies(garp_join_time));
mod_timer(&app->join_timer, jiffies + delay);
}
diff --git a/net/802/mrp.c b/net/802/mrp.c
index 155f74d8b14f..8c6f0381023b 100644
--- a/net/802/mrp.c
+++ b/net/802/mrp.c
@@ -592,7 +592,7 @@ static void mrp_join_timer_arm(struct mrp_applicant *app)
{
unsigned long delay;
- delay = prandom_u32_max(msecs_to_jiffies(mrp_join_time));
+ delay = get_random_u32_below(msecs_to_jiffies(mrp_join_time));
mod_timer(&app->join_timer, jiffies + delay);
}
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 7f6a7c96ac92..114ee5da261f 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -280,7 +280,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv)
unsigned int msecs;
msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER;
- msecs += prandom_u32_max(2 * BATADV_JITTER);
+ msecs += get_random_u32_below(2 * BATADV_JITTER);
return jiffies + msecs_to_jiffies(msecs);
}
@@ -288,7 +288,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv)
/* when do we schedule a ogm packet to be sent */
static unsigned long batadv_iv_ogm_fwd_send_time(void)
{
- return jiffies + msecs_to_jiffies(prandom_u32_max(BATADV_JITTER / 2));
+ return jiffies + msecs_to_jiffies(get_random_u32_below(BATADV_JITTER / 2));
}
/* apply hop penalty for a normal link */
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index f1741fbfb617..f9a58fb5442e 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -51,7 +51,7 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface)
unsigned int msecs;
msecs = atomic_read(&hard_iface->bat_v.elp_interval) - BATADV_JITTER;
- msecs += prandom_u32_max(2 * BATADV_JITTER);
+ msecs += get_random_u32_below(2 * BATADV_JITTER);
queue_delayed_work(batadv_event_workqueue, &hard_iface->bat_v.elp_wq,
msecs_to_jiffies(msecs));
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 033639df96d8..addfd8c4fe95 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -90,7 +90,7 @@ static void batadv_v_ogm_start_queue_timer(struct batadv_hard_iface *hard_iface)
unsigned int msecs = BATADV_MAX_AGGREGATION_MS * 1000;
/* msecs * [0.9, 1.1] */
- msecs += prandom_u32_max(msecs / 5) - (msecs / 10);
+ msecs += get_random_u32_below(msecs / 5) - (msecs / 10);
queue_delayed_work(batadv_event_workqueue, &hard_iface->bat_v.aggr_wq,
msecs_to_jiffies(msecs / 1000));
}
@@ -109,7 +109,7 @@ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv)
return;
msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER;
- msecs += prandom_u32_max(2 * BATADV_JITTER);
+ msecs += get_random_u32_below(2 * BATADV_JITTER);
queue_delayed_work(batadv_event_workqueue, &bat_priv->bat_v.ogm_wq,
msecs_to_jiffies(msecs));
}
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index 5f4aeeb60dc4..bf29fba4dde5 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -1009,7 +1009,7 @@ static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv,
static u8 batadv_nc_random_weight_tq(u8 tq)
{
/* randomize the estimated packet loss (max TQ - estimated TQ) */
- u8 rand_tq = prandom_u32_max(BATADV_TQ_MAX_VALUE + 1 - tq);
+ u8 rand_tq = get_random_u32_below(BATADV_TQ_MAX_VALUE + 1 - tq);
/* convert to (randomized) estimated tq again */
return BATADV_TQ_MAX_VALUE - rand_tq;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a92e7e485feb..b2f9679066c4 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7374,8 +7374,8 @@ static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data,
* calculate conn info age as random value between min/max set in hdev.
*/
conn_info_age = hdev->conn_info_min_age +
- prandom_u32_max(hdev->conn_info_max_age -
- hdev->conn_info_min_age);
+ get_random_u32_below(hdev->conn_info_max_age -
+ hdev->conn_info_min_age);
/* Query controller to refresh cached values if they are too old or were
* never read.
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index b670ba03a675..7e90f9e61d9b 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -189,7 +189,7 @@ activate_next:
int time_ms = 0;
if (err)
- time_ms = 10 + prandom_u32_max(16);
+ time_ms = 10 + get_random_u32_below(16);
j1939_tp_schedule_txtimer(first, time_ms);
}
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index 55f29c9f9e08..67d36776aff4 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -1168,7 +1168,7 @@ static enum hrtimer_restart j1939_tp_txtimer(struct hrtimer *hrtimer)
if (session->tx_retry < J1939_XTP_TX_RETRY_LIMIT) {
session->tx_retry++;
j1939_tp_schedule_txtimer(session,
- 10 + prandom_u32_max(16));
+ 10 + get_random_u32_below(16));
} else {
netdev_alert(priv->ndev, "%s: 0x%p: tx retry count reached\n",
__func__, session);
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index db60217f911b..faabad6603db 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -222,7 +222,7 @@ static void pick_new_mon(struct ceph_mon_client *monc)
max--;
}
- n = prandom_u32_max(max);
+ n = get_random_u32_below(max);
if (o >= 0 && n >= o)
n++;
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 4e4f1e4bc265..11c04e7d928e 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1479,7 +1479,7 @@ static bool target_should_be_paused(struct ceph_osd_client *osdc,
static int pick_random_replica(const struct ceph_osds *acting)
{
- int i = prandom_u32_max(acting->size);
+ int i = get_random_u32_below(acting->size);
dout("%s picked osd%d, primary osd%d\n", __func__,
acting->osds[i], acting->primary);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index a77a85e357e0..ba92762de525 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -111,7 +111,7 @@ static void neigh_cleanup_and_release(struct neighbour *neigh)
unsigned long neigh_rand_reach_time(unsigned long base)
{
- return base ? prandom_u32_max(base) + (base >> 1) : 0;
+ return base ? get_random_u32_below(base) + (base >> 1) : 0;
}
EXPORT_SYMBOL(neigh_rand_reach_time);
@@ -1652,7 +1652,7 @@ void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
struct sk_buff *skb)
{
unsigned long sched_next = jiffies +
- prandom_u32_max(NEIGH_VAR(p, PROXY_DELAY));
+ get_random_u32_below(NEIGH_VAR(p, PROXY_DELAY));
if (p->qlen > NEIGH_VAR(p, PROXY_QLEN)) {
kfree_skb(skb);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index c3763056c554..95da2ddc1c20 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2324,7 +2324,7 @@ static inline int f_pick(struct pktgen_dev *pkt_dev)
pkt_dev->curfl = 0; /*reset */
}
} else {
- flow = prandom_u32_max(pkt_dev->cflows);
+ flow = get_random_u32_below(pkt_dev->cflows);
pkt_dev->curfl = flow;
if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
@@ -2380,8 +2380,8 @@ static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
__u16 t;
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
- t = prandom_u32_max(pkt_dev->queue_map_max -
- pkt_dev->queue_map_min + 1) +
+ t = get_random_u32_below(pkt_dev->queue_map_max -
+ pkt_dev->queue_map_min + 1) +
pkt_dev->queue_map_min;
} else {
t = pkt_dev->cur_queue_map + 1;
@@ -2411,7 +2411,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACSRC_RND)
- mc = prandom_u32_max(pkt_dev->src_mac_count);
+ mc = get_random_u32_below(pkt_dev->src_mac_count);
else {
mc = pkt_dev->cur_src_mac_offset++;
if (pkt_dev->cur_src_mac_offset >=
@@ -2437,7 +2437,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACDST_RND)
- mc = prandom_u32_max(pkt_dev->dst_mac_count);
+ mc = get_random_u32_below(pkt_dev->dst_mac_count);
else {
mc = pkt_dev->cur_dst_mac_offset++;
@@ -2469,16 +2469,16 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
}
if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
- pkt_dev->vlan_id = prandom_u32_max(4096);
+ pkt_dev->vlan_id = get_random_u32_below(4096);
}
if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
- pkt_dev->svlan_id = prandom_u32_max(4096);
+ pkt_dev->svlan_id = get_random_u32_below(4096);
}
if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
if (pkt_dev->flags & F_UDPSRC_RND)
- pkt_dev->cur_udp_src = prandom_u32_max(
+ pkt_dev->cur_udp_src = get_random_u32_below(
pkt_dev->udp_src_max - pkt_dev->udp_src_min) +
pkt_dev->udp_src_min;
@@ -2491,7 +2491,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
if (pkt_dev->flags & F_UDPDST_RND) {
- pkt_dev->cur_udp_dst = prandom_u32_max(
+ pkt_dev->cur_udp_dst = get_random_u32_below(
pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) +
pkt_dev->udp_dst_min;
} else {
@@ -2508,7 +2508,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (imn < imx) {
__u32 t;
if (pkt_dev->flags & F_IPSRC_RND)
- t = prandom_u32_max(imx - imn) + imn;
+ t = get_random_u32_below(imx - imn) + imn;
else {
t = ntohl(pkt_dev->cur_saddr);
t++;
@@ -2530,7 +2530,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->flags & F_IPDST_RND) {
do {
- t = prandom_u32_max(imx - imn) +
+ t = get_random_u32_below(imx - imn) +
imn;
s = htonl(t);
} while (ipv4_is_loopback(s) ||
@@ -2578,8 +2578,8 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
__u32 t;
if (pkt_dev->flags & F_TXSIZE_RND) {
- t = prandom_u32_max(pkt_dev->max_pkt_size -
- pkt_dev->min_pkt_size) +
+ t = get_random_u32_below(pkt_dev->max_pkt_size -
+ pkt_dev->min_pkt_size) +
pkt_dev->min_pkt_size;
} else {
t = pkt_dev->cur_pkt_size + 1;
@@ -2589,7 +2589,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
pkt_dev->cur_pkt_size = t;
} else if (pkt_dev->n_imix_entries > 0) {
struct imix_pkt *entry;
- __u32 t = prandom_u32_max(IMIX_PRECISION);
+ __u32 t = get_random_u32_below(IMIX_PRECISION);
__u8 entry_index = pkt_dev->imix_distribution[t];
entry = &pkt_dev->imix_entries[entry_index];
diff --git a/net/core/stream.c b/net/core/stream.c
index 75fded8495f5..5b1fe2b82eac 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -123,7 +123,7 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
DEFINE_WAIT_FUNC(wait, woken_wake_function);
if (sk_stream_memory_free(sk))
- current_timeo = vm_wait = prandom_u32_max(HZ / 5) + 2;
+ current_timeo = vm_wait = get_random_u32_below(HZ / 5) + 2;
add_wait_queue(sk_sleep(sk), &wait);
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index d5d745c3e345..46aa2d65e40a 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -263,7 +263,7 @@ bool icmp_global_allow(void)
/* We want to use a credit of one in average, but need to randomize
* it for security reasons.
*/
- credit = max_t(int, credit - prandom_u32_max(3), 0);
+ credit = max_t(int, credit - get_random_u32_below(3), 0);
rc = true;
}
WRITE_ONCE(icmp_global.credit, credit);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 81be3e0f0e70..c920aa9a62a9 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -213,7 +213,7 @@ static void igmp_stop_timer(struct ip_mc_list *im)
/* It must be called with locked im->lock */
static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
{
- int tv = prandom_u32_max(max_delay);
+ int tv = get_random_u32_below(max_delay);
im->tm_running = 1;
if (!mod_timer(&im->timer, jiffies+tv+2))
@@ -222,7 +222,7 @@ static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
static void igmp_gq_start_timer(struct in_device *in_dev)
{
- int tv = prandom_u32_max(in_dev->mr_maxdelay);
+ int tv = get_random_u32_below(in_dev->mr_maxdelay);
unsigned long exp = jiffies + tv + 2;
if (in_dev->mr_gq_running &&
@@ -236,7 +236,7 @@ static void igmp_gq_start_timer(struct in_device *in_dev)
static void igmp_ifc_start_timer(struct in_device *in_dev, int delay)
{
- int tv = prandom_u32_max(delay);
+ int tv = get_random_u32_below(delay);
if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2))
in_dev_hold(in_dev);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 4e84ed21d16f..f22051219b50 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -314,7 +314,7 @@ other_half_scan:
if (likely(remaining > 1))
remaining &= ~1U;
- offset = prandom_u32_max(remaining);
+ offset = get_random_u32_below(remaining);
/* __inet_hash_connect() favors ports having @low parity
* We do the opposite to not pollute connect() users.
*/
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index d3dc28156622..a879ec1a267d 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -1037,7 +1037,7 @@ ok:
* on low contention the randomness is maximal and on high contention
* it may be inexistent.
*/
- i = max_t(int, i, prandom_u32_max(8) * 2);
+ i = max_t(int, i, get_random_u32_below(8) * 2);
WRITE_ONCE(table_perturb[index], READ_ONCE(table_perturb[index]) + i + 2);
/* Head lock still held and bh's disabled */
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index cd1fa9f70f1a..de6e3515ab4f 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -471,7 +471,7 @@ static u32 ip_idents_reserve(u32 hash, int segs)
old = READ_ONCE(*p_tstamp);
if (old != now && cmpxchg(p_tstamp, old, now) == old)
- delta = prandom_u32_max(now - old);
+ delta = get_random_u32_below(now - old);
/* If UBSAN reports an error there, please make sure your compiler
* supports -fno-strict-overflow before reporting it that was a bug
@@ -689,7 +689,7 @@ static void update_or_create_fnhe(struct fib_nh_common *nhc, __be32 daddr,
} else {
/* Randomize max depth to avoid some side channels attacks. */
int max_depth = FNHE_RECLAIM_DEPTH +
- prandom_u32_max(FNHE_RECLAIM_DEPTH);
+ get_random_u32_below(FNHE_RECLAIM_DEPTH);
while (depth > max_depth) {
fnhe_remove_oldest(hash);
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index 54eec33c6e1c..d2c470524e58 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -618,7 +618,7 @@ static void bbr_reset_probe_bw_mode(struct sock *sk)
struct bbr *bbr = inet_csk_ca(sk);
bbr->mode = BBR_PROBE_BW;
- bbr->cycle_idx = CYCLE_LEN - 1 - prandom_u32_max(bbr_cycle_rand);
+ bbr->cycle_idx = CYCLE_LEN - 1 - get_random_u32_below(bbr_cycle_rand);
bbr_advance_cycle_phase(sk); /* flip to next phase of gain cycle */
}
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 0640453fce54..3b076e5ba932 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3646,7 +3646,8 @@ static void tcp_send_challenge_ack(struct sock *sk)
u32 half = (ack_limit + 1) >> 1;
WRITE_ONCE(net->ipv4.tcp_challenge_timestamp, now);
- WRITE_ONCE(net->ipv4.tcp_challenge_count, half + prandom_u32_max(ack_limit));
+ WRITE_ONCE(net->ipv4.tcp_challenge_count,
+ half + get_random_u32_below(ack_limit));
}
count = READ_ONCE(net->ipv4.tcp_challenge_count);
if (count > 0) {
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 9c3f5202a97b..daf89a2eb492 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -104,7 +104,7 @@ static inline u32 cstamp_delta(unsigned long cstamp)
static inline s32 rfc3315_s14_backoff_init(s32 irt)
{
/* multiply 'initial retransmission time' by 0.9 .. 1.1 */
- u64 tmp = (900000 + prandom_u32_max(200001)) * (u64)irt;
+ u64 tmp = (900000 + get_random_u32_below(200001)) * (u64)irt;
do_div(tmp, 1000000);
return (s32)tmp;
}
@@ -112,11 +112,11 @@ static inline s32 rfc3315_s14_backoff_init(s32 irt)
static inline s32 rfc3315_s14_backoff_update(s32 rt, s32 mrt)
{
/* multiply 'retransmission timeout' by 1.9 .. 2.1 */
- u64 tmp = (1900000 + prandom_u32_max(200001)) * (u64)rt;
+ u64 tmp = (1900000 + get_random_u32_below(200001)) * (u64)rt;
do_div(tmp, 1000000);
if ((s32)tmp > mrt) {
/* multiply 'maximum retransmission time' by 0.9 .. 1.1 */
- tmp = (900000 + prandom_u32_max(200001)) * (u64)mrt;
+ tmp = (900000 + get_random_u32_below(200001)) * (u64)mrt;
do_div(tmp, 1000000);
}
return (s32)tmp;
@@ -3967,7 +3967,7 @@ static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
if (ifp->flags & IFA_F_OPTIMISTIC)
rand_num = 0;
else
- rand_num = prandom_u32_max(idev->cnf.rtr_solicit_delay ?: 1);
+ rand_num = get_random_u32_below(idev->cnf.rtr_solicit_delay ? : 1);
nonce = 0;
if (idev->cnf.enhanced_dad ||
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 7860383295d8..1c02160cf7a4 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1050,7 +1050,7 @@ bool ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
/* called with mc_lock */
static void mld_gq_start_work(struct inet6_dev *idev)
{
- unsigned long tv = prandom_u32_max(idev->mc_maxdelay);
+ unsigned long tv = get_random_u32_below(idev->mc_maxdelay);
idev->mc_gq_running = 1;
if (!mod_delayed_work(mld_wq, &idev->mc_gq_work, tv + 2))
@@ -1068,7 +1068,7 @@ static void mld_gq_stop_work(struct inet6_dev *idev)
/* called with mc_lock */
static void mld_ifc_start_work(struct inet6_dev *idev, unsigned long delay)
{
- unsigned long tv = prandom_u32_max(delay);
+ unsigned long tv = get_random_u32_below(delay);
if (!mod_delayed_work(mld_wq, &idev->mc_ifc_work, tv + 2))
in6_dev_hold(idev);
@@ -1085,7 +1085,7 @@ static void mld_ifc_stop_work(struct inet6_dev *idev)
/* called with mc_lock */
static void mld_dad_start_work(struct inet6_dev *idev, unsigned long delay)
{
- unsigned long tv = prandom_u32_max(delay);
+ unsigned long tv = get_random_u32_below(delay);
if (!mod_delayed_work(mld_wq, &idev->mc_dad_work, tv + 2))
in6_dev_hold(idev);
@@ -1130,7 +1130,7 @@ static void igmp6_group_queried(struct ifmcaddr6 *ma, unsigned long resptime)
}
if (delay >= resptime)
- delay = prandom_u32_max(resptime);
+ delay = get_random_u32_below(resptime);
if (!mod_delayed_work(mld_wq, &ma->mca_work, delay))
refcount_inc(&ma->mca_refcnt);
@@ -2574,7 +2574,7 @@ static void igmp6_join_group(struct ifmcaddr6 *ma)
igmp6_send(&ma->mca_addr, ma->idev->dev, ICMPV6_MGM_REPORT);
- delay = prandom_u32_max(unsolicited_report_interval(ma->idev));
+ delay = get_random_u32_below(unsolicited_report_interval(ma->idev));
if (cancel_delayed_work(&ma->mca_work)) {
refcount_dec(&ma->mca_refcnt);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 2f355f0ec32a..e74e0361fd92 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1713,7 +1713,7 @@ static int rt6_insert_exception(struct rt6_info *nrt,
net->ipv6.rt6_stats->fib_rt_cache++;
/* Randomize max depth to avoid some side channels attacks. */
- max_depth = FIB6_MAX_DEPTH + prandom_u32_max(FIB6_MAX_DEPTH);
+ max_depth = FIB6_MAX_DEPTH + get_random_u32_below(FIB6_MAX_DEPTH);
while (bucket->depth > max_depth)
rt6_exception_remove_oldest(bucket);
diff --git a/net/netfilter/ipvs/ip_vs_twos.c b/net/netfilter/ipvs/ip_vs_twos.c
index f2579fc9c75b..3308e4cc740a 100644
--- a/net/netfilter/ipvs/ip_vs_twos.c
+++ b/net/netfilter/ipvs/ip_vs_twos.c
@@ -71,8 +71,8 @@ static struct ip_vs_dest *ip_vs_twos_schedule(struct ip_vs_service *svc,
* from 0 to total_weight
*/
total_weight += 1;
- rweight1 = prandom_u32_max(total_weight);
- rweight2 = prandom_u32_max(total_weight);
+ rweight1 = get_random_u32_below(total_weight);
+ rweight2 = get_random_u32_below(total_weight);
/* Pick two weighted servers */
list_for_each_entry_rcu(dest, &svc->destinations, n_list) {
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f97bda06d2a9..8703812405eb 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -906,7 +906,7 @@ nf_conntrack_hash_check_insert(struct nf_conn *ct)
nf_ct_zone_id(nf_ct_zone(ct), IP_CT_DIR_REPLY));
} while (nf_conntrack_double_lock(net, hash, reply_hash, sequence));
- max_chainlen = MIN_CHAINLEN + prandom_u32_max(MAX_CHAINLEN);
+ max_chainlen = MIN_CHAINLEN + get_random_u32_below(MAX_CHAINLEN);
/* See if there's one in the list already, including reverse */
hlist_nulls_for_each_entry(h, n, &nf_conntrack_hash[hash], hnnode) {
@@ -1227,7 +1227,7 @@ __nf_conntrack_confirm(struct sk_buff *skb)
goto dying;
}
- max_chainlen = MIN_CHAINLEN + prandom_u32_max(MAX_CHAINLEN);
+ max_chainlen = MIN_CHAINLEN + get_random_u32_below(MAX_CHAINLEN);
/* See if there's one in the list already, including reverse:
NAT could have grabbed it without realizing, since we're
not in the hash. If there is, we lost race. */
diff --git a/net/netfilter/nf_nat_helper.c b/net/netfilter/nf_nat_helper.c
index a95a25196943..bf591e6af005 100644
--- a/net/netfilter/nf_nat_helper.c
+++ b/net/netfilter/nf_nat_helper.c
@@ -223,7 +223,7 @@ u16 nf_nat_exp_find_port(struct nf_conntrack_expect *exp, u16 port)
if (res != -EBUSY || (--attempts_left < 0))
break;
- port = min + prandom_u32_max(range);
+ port = min + get_random_u32_below(range);
}
return 0;
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index a662e8a5ff84..7a401d94463a 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -835,7 +835,7 @@ retry:
/* Bind collision, search negative portid values. */
if (rover == -4096)
/* rover will be in range [S32_MIN, -4097] */
- rover = S32_MIN + prandom_u32_max(-4096 - S32_MIN);
+ rover = S32_MIN + get_random_u32_below(-4096 - S32_MIN);
else if (rover >= -4096)
rover = -4097;
portid = rover--;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 6ce8dd19f33c..51a47ade92e8 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1350,7 +1350,7 @@ static bool fanout_flow_is_huge(struct packet_sock *po, struct sk_buff *skb)
if (READ_ONCE(history[i]) == rxhash)
count++;
- victim = prandom_u32_max(ROLLOVER_HLEN);
+ victim = get_random_u32_below(ROLLOVER_HLEN);
/* Avoid dirtying the cache line if possible */
if (READ_ONCE(history[victim]) != rxhash)
@@ -1386,7 +1386,7 @@ static unsigned int fanout_demux_rnd(struct packet_fanout *f,
struct sk_buff *skb,
unsigned int num)
{
- return prandom_u32_max(num);
+ return get_random_u32_below(num);
}
static unsigned int fanout_demux_rollover(struct packet_fanout *f,
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index 62d682b96b88..be267ffaaba7 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -25,7 +25,7 @@ static struct tc_action_ops act_gact_ops;
static int gact_net_rand(struct tcf_gact *gact)
{
smp_rmb(); /* coupled with smp_wmb() in tcf_gact_init() */
- if (prandom_u32_max(gact->tcfg_pval))
+ if (get_random_u32_below(gact->tcfg_pval))
return gact->tcf_action;
return gact->tcfg_paction;
}
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 7a25477f5d99..4194480746b0 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -168,7 +168,7 @@ static int tcf_sample_act(struct sk_buff *skb, const struct tc_action *a,
psample_group = rcu_dereference_bh(s->psample_group);
/* randomly sample packets according to rate */
- if (psample_group && (prandom_u32_max(s->rate) == 0)) {
+ if (psample_group && (get_random_u32_below(s->rate) == 0)) {
if (!skb_at_tc_ingress(skb)) {
md.in_ifindex = skb->skb_iif;
md.out_ifindex = skb->dev->ifindex;
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index 3ac3e5c80b6f..19c851125901 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -183,7 +183,7 @@ static struct sk_buff *choke_peek_random(const struct choke_sched_data *q,
int retrys = 3;
do {
- *pidx = (q->head + prandom_u32_max(choke_len(q))) & q->tab_mask;
+ *pidx = (q->head + get_random_u32_below(choke_len(q))) & q->tab_mask;
skb = q->tab[*pidx];
if (skb)
return skb;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index fb00ac40ecb7..6ef3021e1169 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -513,8 +513,8 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch,
goto finish_segs;
}
- skb->data[prandom_u32_max(skb_headlen(skb))] ^=
- 1<<prandom_u32_max(8);
+ skb->data[get_random_u32_below(skb_headlen(skb))] ^=
+ 1<<get_random_u32_below(8);
}
if (unlikely(sch->q.qlen >= sch->limit)) {
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 83628c347744..cfe72085fdc4 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -8319,7 +8319,7 @@ static int sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32_max(remaining) + low;
+ rover = get_random_u32_below(remaining) + low;
do {
rover++;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index f8fd98784977..ca1eba95c293 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -199,7 +199,7 @@ void sctp_transport_reset_hb_timer(struct sctp_transport *transport)
if ((time_before(transport->hb_timer.expires, expires) ||
!timer_pending(&transport->hb_timer)) &&
!mod_timer(&transport->hb_timer,
- expires + prandom_u32_max(transport->rto)))
+ expires + get_random_u32_below(transport->rto)))
sctp_transport_hold(transport);
}
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index f075a9fb5ccc..95ff74706104 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -677,7 +677,7 @@ static void cache_limit_defers(void)
/* Consider removing either the first or the last */
if (cache_defer_cnt > DFR_MAX) {
- if (prandom_u32_max(2))
+ if (get_random_u32_below(2))
discard = list_entry(cache_defer_list.next,
struct cache_deferred_req, recent);
else
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 915b9902f673..2e4987dcba29 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1619,7 +1619,7 @@ static int xs_get_random_port(void)
if (max < min)
return -EADDRINUSE;
range = max - min + 1;
- rand = prandom_u32_max(range);
+ rand = get_random_u32_below(range);
return rand + min;
}
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index e902b01ea3cb..b35c8701876a 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -3010,7 +3010,7 @@ static int tipc_sk_insert(struct tipc_sock *tsk)
struct net *net = sock_net(sk);
struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 remaining = (TIPC_MAX_PORT - TIPC_MIN_PORT) + 1;
- u32 portid = prandom_u32_max(remaining) + TIPC_MIN_PORT;
+ u32 portid = get_random_u32_below(remaining) + TIPC_MIN_PORT;
while (remaining--) {
portid++;
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 884eca7f6743..ff38c5a4d174 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -627,7 +627,7 @@ static int __vsock_bind_connectible(struct vsock_sock *vsk,
if (!port)
port = LAST_RESERVED_PORT + 1 +
- prandom_u32_max(U32_MAX - LAST_RESERVED_PORT);
+ get_random_u32_below(U32_MAX - LAST_RESERVED_PORT);
vsock_addr_init(&new_addr, addr->svm_cid, addr->svm_port);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 3d2fe7712ac5..40f831854774 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2072,7 +2072,7 @@ int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high)
} else {
u32 spi = 0;
for (h = 0; h < high-low+1; h++) {
- spi = low + prandom_u32_max(high - low + 1);
+ spi = low + get_random_u32_below(high - low + 1);
x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family);
if (x0 == NULL) {
newspi = htonl(spi);
--
LinuxNextTracking
1
0