linux-merge June 2024

linux-merge@lists.open-mesh.org

3 participants
35 discussions

Build check errors found: 2024-06-30
by postmaster＠open-mesh.org 30 Jun '24

30 Jun '24

Name of failed tests ==================== main ---- * difference between net-next and batadv main stable ------ * difference between net and batadv stable Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) Statistics ========== main ---- Failed tests: 1 Started build tests: 223 Tested Linux versions: 41 Tested configs: 102 stable ------ Failed tests: 1 Started build tests: 229 Tested Linux versions: 41 Tested configs: 113

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Build check errors found: 2024-06-29
by postmaster＠open-mesh.org 29 Jun '24

29 Jun '24

Name of failed tests ==================== main ---- * difference between net-next and batadv main stable ------ * difference between net and batadv stable Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) Statistics ========== main ---- Failed tests: 1 Started build tests: 209 Tested Linux versions: 41 Tested configs: 98 stable ------ Failed tests: 1 Started build tests: 223 Tested Linux versions: 41 Tested configs: 104

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Build check errors found: 2024-06-28
by postmaster＠open-mesh.org 28 Jun '24

28 Jun '24

Name of failed tests ==================== stable ------ * difference between net and batadv stable main ---- * difference between net-next and batadv main Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) Statistics ========== stable ------ Failed tests: 1 Started build tests: 235 Tested Linux versions: 41 Tested configs: 107 main ---- Failed tests: 1 Started build tests: 223 Tested Linux versions: 41 Tested configs: 100

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Build check errors found: 2024-06-27
by postmaster＠open-mesh.org 27 Jun '24

27 Jun '24

Name of failed tests ==================== stable ------ * difference between net and batadv stable main ---- * difference between net-next and batadv main Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/translation-table.c | 47 +------------------- 1 file changed, 3 insertions(+), 44 deletions(-) Statistics ========== stable ------ Failed tests: 1 Started build tests: 233 Tested Linux versions: 41 Tested configs: 110 main ---- Failed tests: 1 Started build tests: 228 Tested Linux versions: 41 Tested configs: 107

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Build check errors found: 2024-06-26
by postmaster＠open-mesh.org 26 Jun '24

26 Jun '24

Name of failed tests ==================== stable ------ * difference between net and batadv stable main ---- * difference between net-next and batadv main Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/translation-table.c | 47 +------------------- 1 file changed, 3 insertions(+), 44 deletions(-) Statistics ========== stable ------ Failed tests: 1 Started build tests: 234 Tested Linux versions: 41 Tested configs: 112 main ---- Failed tests: 1 Started build tests: 228 Tested Linux versions: 41 Tested configs: 109

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Build check errors found: 2024-06-25
by postmaster＠open-mesh.org 25 Jun '24

25 Jun '24

Name of failed tests ==================== stable ------ * difference between net and batadv stable main ---- * difference between net-next and batadv main Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/translation-table.c | 47 +------------------- 1 file changed, 3 insertions(+), 44 deletions(-) Statistics ========== stable ------ Failed tests: 1 Started build tests: 243 Tested Linux versions: 41 Tested configs: 107 main ---- Failed tests: 1 Started build tests: 218 Tested Linux versions: 41 Tested configs: 108

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[linux-next] LinuxNextTracking branch, master, updated. next-20240624
by batman＠open-mesh.org 24 Jun '24

24 Jun '24

The following commit has been merged in the master branch: commit 537a350d14321c8cca5efbf0a33a404fec3a9f9e Author: Sven Eckelmann <sven(a)narfation.org> Date: Sat May 4 21:57:30 2024 +0200 batman-adv: Don't accept TT entries for out-of-spec VIDs The internal handling of VLAN IDs in batman-adv is only specified for following encodings: * VLAN is used - bit 15 is 1 - bit 11 - bit 0 is the VLAN ID (0-4095) - remaining bits are 0 * No VLAN is used - bit 15 is 0 - remaining bits are 0 batman-adv was only preparing new translation table entries (based on its soft interface information) using this encoding format. But the receive path was never checking if entries in the roam or TT TVLVs were also following this encoding. It was therefore possible to create more than the expected maximum of 4096 + 1 entries in the originator VLAN list. Simply by setting the "remaining bits" to "random" values in corresponding TVLV. Cc: stable(a)vger.kernel.org Fixes: 7ea7b4a14275 ("batman-adv: make the TT CRC logic VLAN specific") Reported-by: Linus Lüssing <linus.luessing(a)c0d3.blue> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index ac74f6ead62d5..8f6dd2c6ee41d 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -12,6 +12,7 @@ #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> +#include <linux/if_vlan.h> #include <linux/jiffies.h> #include <linux/kref.h> #include <linux/list.h> @@ -131,6 +132,29 @@ batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, return vlan; } +/** + * batadv_vlan_id_valid() - check if vlan id is in valid batman-adv encoding + * @vid: the VLAN identifier + * + * Return: true when either no vlan is set or if VLAN is in correct range, + * false otherwise + */ +static bool batadv_vlan_id_valid(unsigned short vid) +{ + unsigned short non_vlan = vid & ~(BATADV_VLAN_HAS_TAG | VLAN_VID_MASK); + + if (vid == 0) + return true; + + if (!(vid & BATADV_VLAN_HAS_TAG)) + return false; + + if (non_vlan) + return false; + + return true; +} + /** * batadv_orig_node_vlan_new() - search and possibly create an orig_node_vlan * object @@ -149,6 +173,9 @@ batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, { struct batadv_orig_node_vlan *vlan; + if (!batadv_vlan_id_valid(vid)) + return NULL; + spin_lock_bh(&orig_node->vlan_list_lock); /* first look if an object for this vid already exists */ -- LinuxNextTracking

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[linux-next] LinuxNextTracking branch, master, updated. next-20240624
by batman＠open-mesh.org 24 Jun '24

24 Jun '24

The following commit has been merged in the master branch: commit 6bfff3582416b2f809e6b08c6e9d57b18086bdbd Author: Linus Lüssing <linus.luessing(a)c0d3.blue> Date: Wed Jun 12 15:33:57 2024 +0200 Revert "batman-adv: prefer kfree_rcu() over call_rcu() with free-only callbacks" This reverts commit 537db05da2ca8ccc1243c9dd1d0c148b84aa0432. This change seems to result in a memory leak / RCU race and the following kernel splat when the batman-adv kernel module is unloaded: ``` [ 112.208633] ============================================================================= [ 112.210359] BUG batadv_tl_cache (Tainted: G OE ): Objects remaining in batadv_tl_cache on __kmem_cache_shutdown() [ 112.211943] ----------------------------------------------------------------------------- [ 112.212517] Slab 0xffffe8afc0216d00 objects=16 used=1 fp=0xffff93f4085b4340 flags=0xfffffc0000a00(workingset|slab|node=0|zone=1|lastcpupid=0x1fffff) [ 112.212517] CPU: 1 PID: 776 Comm: rmmod Tainted: G OE 6.8.12-amd64 #1 Debian 6.8.12-1 [ 112.212517] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 112.212517] Call Trace: [ 112.212517] <TASK> [ 112.212517] dump_stack_lvl+0x64/0x80 [ 112.212517] slab_err+0xe6/0x120 [ 112.212517] __kmem_cache_shutdown+0x160/0x2e0 [ 112.212517] kmem_cache_destroy+0x55/0x160 [ 112.220849] batadv_tt_cache_destroy+0x15/0x60 [batman_adv] [ 112.220849] __do_sys_delete_module+0x1d5/0x320 [ 112.220849] do_syscall_64+0x83/0x190 [ 112.220849] ? do_syscall_64+0x8f/0x190 [ 112.220849] ? exc_page_fault+0x7f/0x180 [ 112.220849] entry_SYSCALL_64_after_hwframe+0x78/0x80 [ 112.224478] RIP: 0033:0x7f2ac8434977 [ 112.224478] Code: 73 01 c3 48 8b 0d a9 94 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 79 94 0c 00 f7 d8 64 89 01 48 [ 112.224478] RSP: 002b:00007ffe0adf6138 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 112.224478] RAX: ffffffffffffffda RBX: 000055db9018e770 RCX: 00007f2ac8434977 [ 112.224478] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055db9018e7d8 [ 112.224478] RBP: 0000000000000000 R08: 1999999999999999 R09: 0000000000000000 [ 112.224478] R10: 00007f2ac84a6ac0 R11: 0000000000000206 R12: 00007ffe0adf6390 [ 112.224478] R13: 000055db9018e770 R14: 000055db9018d2a0 R15: 0000000000000000 [ 112.233961] </TASK> [ 112.233961] Disabling lock debugging due to kernel taint [ 112.233961] Object 0xffff93f4085b4140 @offset=320 [ 112.233961] Allocated in batadv_tt_local_add+0x297/0xa20 [batman_adv] age=15835 cpu=1 pid=755 [ 112.233961] batadv_tt_local_add+0x297/0xa20 [batman_adv] [ 112.233961] batadv_interface_set_mac_addr+0xf6/0x120 [batman_adv] [ 112.233961] dev_set_mac_address+0xde/0x140 [ 112.233961] dev_set_mac_address_user+0x30/0x50 [ 112.233961] do_setlink+0x261/0x12d0 [ 112.233961] rtnl_setlink+0x11f/0x1d0 [ 112.233961] rtnetlink_rcv_msg+0x152/0x3c0 [ 112.241772] netlink_rcv_skb+0x5b/0x110 [ 112.241772] netlink_unicast+0x1a6/0x290 [ 112.241772] netlink_sendmsg+0x223/0x490 [ 112.241772] __sys_sendto+0x1df/0x1f0 [ 112.241772] __x64_sys_sendto+0x24/0x30 [ 112.241772] do_syscall_64+0x83/0x190 [ 112.241772] entry_SYSCALL_64_after_hwframe+0x78/0x80 [ 112.245994] ------------[ cut here ]------------ [ 112.246650] kmem_cache_destroy batadv_tl_cache: Slab cache still has objects when called from batadv_tt_cache_destroy+0x15/0x60 [batman_adv] [ 112.246668] WARNING: CPU: 1 PID: 776 at mm/slab_common.c:493 kmem_cache_destroy+0x14d/0x160 [ 112.249584] Modules linked in: veth batman_adv(OE-) cfg80211 rfkill bridge stp llc libcrc32c crc32c_generic crc16 rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver binfmt_misc pcspkr button joydev evdev serio_raw loop dm_mod efi_pstore nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock vmw_vmci qemu_fw_cfg ip_tables x_tables autofs4 nfsv3 nfs_acl nfs lockd grace sunrpc 9pnet_rdma rdma_cm iw_cm ib_cm ib_core configfs 9p netfs ata_generic ata_piix libata psmouse scsi_mod 9pnet_virtio i2c_piix4 9pnet e1000 scsi_common floppy crypto_simd cryptd [ 112.256555] CPU: 1 PID: 776 Comm: rmmod Tainted: G B OE 6.8.12-amd64 #1 Debian 6.8.12-1 [ 112.258457] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 112.260410] RIP: 0010:kmem_cache_destroy+0x14d/0x160 [ 112.261687] Code: 00 eb be 5b 5d 41 5c 41 5d c3 cc cc cc cc 48 8b 53 60 48 8b 4c 24 20 48 c7 c6 60 d5 e3 98 48 c7 c7 b8 ec 2d 99 e8 43 0d d8 ff <0f> 0b e9 e2 fe ff ff c3 cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 [ 112.265219] RSP: 0018:ffffb3b2806e7e48 EFLAGS: 00010282 [ 112.266044] RAX: 0000000000000000 RBX: ffff93f4270a2640 RCX: 0000000000000027 [ 112.267157] RDX: ffff93f43c521708 RSI: 0000000000000001 RDI: ffff93f43c521700 [ 112.268268] RBP: 000055db9018e7d8 R08: 0000000000000000 R09: ffffb3b2806e7cd8 [ 112.269418] R10: ffffb3b2806e7cd0 R11: 0000000000000003 R12: 0000000080012d00 [ 112.270572] R13: ffffb3b2806e7f58 R14: 0000000000000000 R15: 0000000000000000 [ 112.271699] FS: 00007f2ac8308440(0000) GS:ffff93f43c500000(0000) knlGS:0000000000000000 [ 112.273001] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 112.273923] CR2: 00005584ef830110 CR3: 000000000787c000 CR4: 00000000000006f0 [ 112.275050] Call Trace: [ 112.275464] <TASK> [ 112.275810] ? kmem_cache_destroy+0x14d/0x160 [ 112.276518] ? __warn+0x81/0x130 [ 112.277043] ? kmem_cache_destroy+0x14d/0x160 [ 112.277730] ? report_bug+0x171/0x1a0 [ 112.278315] ? prb_read_valid+0x1b/0x30 [ 112.278919] ? handle_bug+0x3c/0x80 [ 112.279467] ? exc_invalid_op+0x17/0x70 [ 112.280071] ? asm_exc_invalid_op+0x1a/0x20 [ 112.280741] ? kmem_cache_destroy+0x14d/0x160 [ 112.281603] ? kmem_cache_destroy+0x14d/0x160 [ 112.282489] batadv_tt_cache_destroy+0x15/0x60 [batman_adv] [ 112.283373] __do_sys_delete_module+0x1d5/0x320 [ 112.284080] do_syscall_64+0x83/0x190 [ 112.284696] ? do_syscall_64+0x8f/0x190 [ 112.285315] ? exc_page_fault+0x7f/0x180 [ 112.285970] entry_SYSCALL_64_after_hwframe+0x78/0x80 [ 112.286768] RIP: 0033:0x7f2ac8434977 [ 112.287355] Code: 73 01 c3 48 8b 0d a9 94 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 79 94 0c 00 f7 d8 64 89 01 48 [ 112.290282] RSP: 002b:00007ffe0adf6138 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 112.291465] RAX: ffffffffffffffda RBX: 000055db9018e770 RCX: 00007f2ac8434977 [ 112.292595] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055db9018e7d8 [ 112.293724] RBP: 0000000000000000 R08: 1999999999999999 R09: 0000000000000000 [ 112.294863] R10: 00007f2ac84a6ac0 R11: 0000000000000206 R12: 00007ffe0adf6390 [ 112.295982] R13: 000055db9018e770 R14: 000055db9018d2a0 R15: 0000000000000000 [ 112.297103] </TASK> [ 112.297465] ---[ end trace 0000000000000000 ]--- ``` So far, after some debugging, the actual cause for this could not immediately be found within the batman-adv code. Therefore reverting this for now until the underlying issue can be found and better understood. Some additional debugging information and discussions can be found on our Redmine bugtracker, linked below. Link: https://www.open-mesh.org/issues/428 Fixes: 537db05da2ca ("batman-adv: prefer kfree_rcu() over call_rcu() with free-only callbacks") Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue> Signed-off-by: Sven Eckelmann <sven(a)narfation.org> Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de> diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index b21ff3c36b07d..2243cec18ecc8 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -208,6 +208,20 @@ batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr, return tt_global_entry; } +/** + * batadv_tt_local_entry_free_rcu() - free the tt_local_entry + * @rcu: rcu pointer of the tt_local_entry + */ +static void batadv_tt_local_entry_free_rcu(struct rcu_head *rcu) +{ + struct batadv_tt_local_entry *tt_local_entry; + + tt_local_entry = container_of(rcu, struct batadv_tt_local_entry, + common.rcu); + + kmem_cache_free(batadv_tl_cache, tt_local_entry); +} + /** * batadv_tt_local_entry_release() - release tt_local_entry from lists and queue * for free after rcu grace period @@ -222,7 +236,7 @@ static void batadv_tt_local_entry_release(struct kref *ref) batadv_softif_vlan_put(tt_local_entry->vlan); - kfree_rcu(tt_local_entry, common.rcu); + call_rcu(&tt_local_entry->common.rcu, batadv_tt_local_entry_free_rcu); } /** @@ -240,6 +254,20 @@ batadv_tt_local_entry_put(struct batadv_tt_local_entry *tt_local_entry) batadv_tt_local_entry_release); } +/** + * batadv_tt_global_entry_free_rcu() - free the tt_global_entry + * @rcu: rcu pointer of the tt_global_entry + */ +static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu) +{ + struct batadv_tt_global_entry *tt_global_entry; + + tt_global_entry = container_of(rcu, struct batadv_tt_global_entry, + common.rcu); + + kmem_cache_free(batadv_tg_cache, tt_global_entry); +} + /** * batadv_tt_global_entry_release() - release tt_global_entry from lists and * queue for free after rcu grace period @@ -254,7 +282,7 @@ void batadv_tt_global_entry_release(struct kref *ref) batadv_tt_global_del_orig_list(tt_global_entry); - kfree_rcu(tt_global_entry, common.rcu); + call_rcu(&tt_global_entry->common.rcu, batadv_tt_global_entry_free_rcu); } /** @@ -379,6 +407,19 @@ static void batadv_tt_global_size_dec(struct batadv_orig_node *orig_node, batadv_tt_global_size_mod(orig_node, vid, -1); } +/** + * batadv_tt_orig_list_entry_free_rcu() - free the orig_entry + * @rcu: rcu pointer of the orig_entry + */ +static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu) +{ + struct batadv_tt_orig_list_entry *orig_entry; + + orig_entry = container_of(rcu, struct batadv_tt_orig_list_entry, rcu); + + kmem_cache_free(batadv_tt_orig_cache, orig_entry); +} + /** * batadv_tt_orig_list_entry_release() - release tt orig entry from lists and * queue for free after rcu grace period @@ -392,7 +433,7 @@ static void batadv_tt_orig_list_entry_release(struct kref *ref) refcount); batadv_orig_node_put(orig_entry->orig_node); - kfree_rcu(orig_entry, rcu); + call_rcu(&orig_entry->rcu, batadv_tt_orig_list_entry_free_rcu); } /** -- LinuxNextTracking

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Build check errors found: 2024-06-24
by postmaster＠open-mesh.org 24 Jun '24

24 Jun '24

Name of failed tests ==================== stable ------ * difference between net and batadv stable main ---- * difference between net-next and batadv main Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/translation-table.c | 47 +------------------- 1 file changed, 3 insertions(+), 44 deletions(-) Statistics ========== stable ------ Failed tests: 1 Started build tests: 232 Tested Linux versions: 41 Tested configs: 107 main ---- Failed tests: 1 Started build tests: 208 Tested Linux versions: 41 Tested configs: 108

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Build check errors found: 2024-06-23
by postmaster＠open-mesh.org 23 Jun '24

23 Jun '24

Name of failed tests ==================== stable ------ * difference between net and batadv stable main ---- * difference between net-next and batadv main Output of different failed tests ================================ stable: difference between net and batadv stable ------------------------------------------------ net/net/batman-adv/originator.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) main: difference between net-next and batadv main ------------------------------------------------- netnext/net/batman-adv/translation-table.c | 47 +------------------- 1 file changed, 3 insertions(+), 44 deletions(-) Statistics ========== stable ------ Failed tests: 1 Started build tests: 116 Tested Linux versions: 40 Tested configs: 77 main ---- Failed tests: 1 Started build tests: 128 Tested Linux versions: 41 Tested configs: 82

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linux-merge June 2024