Hi all,
it's me again. There is another back-trace.
I can't help myself. Now I switch to 3.17.3 with your patch:
# cd net/batman-adv/ # patch < /usr/src/frag_debug_size.patch patching file fragmentation.c Hunk #1 succeeded at 250 (offset 1 line). # cd /usr/src/linux # make CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h CALL scripts/checksyscalls.sh CHK include/generated/compile.h CC [M] net/batman-adv/fragmentation.o LD [M] net/batman-adv/batman-adv.o Kernel: arch/x86/boot/bzImage is ready (#1) Building modules, stage 2. MODPOST 29 modules CC net/batman-adv/batman-adv.mod.o LD [M] net/batman-adv/batman-adv.ko # make modules_install [ … ]
3.17.4 compiles now for the next crash.
Best regards
Philipp
________________________ Freifunk Rheinland e. V. – Funkzelle Wuppertal –
SYSTEM MAP: /boot/System.map DEBUG KERNEL: /usr/src/linux-3.16.7-gentoo/vmlinux (3.16.7-gentoo) DUMPFILE: vmcore_20141124222013 CPUS: 1 DATE: Mon Nov 24 22:15:06 2014 UPTIME: 00:46:49 LOAD AVERAGE: 0.14, 0.16, 0.14 TASKS: 137 NODENAME: wolke RELEASE: 3.16.7-gentoo VERSION: #1 SMP Mon Nov 17 03:44:22 CET 2014 MACHINE: x86_64 (2593 Mhz) MEMORY: 511.6 MB PANIC: "kernel BUG at net/core/skbuff.c:100!" PID: 1971 COMMAND: "fastd" TASK: ffff88001a31e0f0 [THREAD_INFO: ffff880019c5c000] CPU: 0 STATE: TASK_RUNNING (PANIC)
crash> bt PID: 1971 TASK: ffff88001a31e0f0 CPU: 0 COMMAND: "fastd" #0 [ffff88001fc03980] machine_kexec at ffffffff8103a34e #1 [ffff88001fc039e0] crash_kexec at ffffffff810be503 #2 [ffff88001fc03ab0] oops_end at ffffffff81005fc8 #3 [ffff88001fc03ae0] die at ffffffff81006463 #4 [ffff88001fc03b10] do_trap at ffffffff81002e12 #5 [ffff88001fc03b70] do_error_trap at ffffffff8100316d #6 [ffff88001fc03c30] do_invalid_op at ffffffff8100394b #7 [ffff88001fc03c40] invalid_op at ffffffff817f385e [exception RIP: skb_panic+94] RIP: ffffffff817eb99d RSP: ffff88001fc03cf8 RFLAGS: 00010296 RAX: 000000000000008b RBX: ffff8800057c9860 RCX: 0000000000000092 RDX: 000000000000003c RSI: 0000000000000046 RDI: 0000000000000246 RBP: ffff88001fc03d18 R8: 0000000000000000 R9: 0000000000000000 R10: 00000000000001a5 R11: 0000000000000006 R12: 0000000000000564 R13: ffff88001fc03da0 R14: ffff8800191def00 R15: ffff880019200062 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #8 [ffff88001fc03d20] skb_put at ffffffff81611bb1 #9 [ffff88001fc03d30] batadv_frag_skb_buffer at ffffffffa001be12 [batman_adv] #10 [ffff88001fc03d90] batadv_recv_frag_packet at ffffffffa0026273 [batman_adv] #11 [ffff88001fc03dd0] batadv_batman_skb_recv at ffffffffa001fef5 [batman_adv] #12 [ffff88001fc03e10] __netif_receive_skb_core at ffffffff81621962 #13 [ffff88001fc03e80] __netif_receive_skb at ffffffff81621e91 #14 [ffff88001fc03ea0] process_backlog at ffffffff81621f7e #15 [ffff88001fc03ef0] net_rx_action at ffffffff81622731 #16 [ffff88001fc03f50] __do_softirq at ffffffff81053ef8 #17 [ffff88001fc03fb0] do_softirq_own_stack at ffffffff817f3a5c --- <IRQ stack> --- #18 [ffff880019c5fd10] do_softirq_own_stack at ffffffff817f3a5c [exception RIP: tun_get_user+1056] RIP: ffffffffa00098f0 RSP: 0000000000000001 RFLAGS: 7fff00000586 RAX: ffffffff816210b4 RBX: ffff880019c5fd58 RCX: ffff8800192f0780 RDX: 0000000000000000 RSI: ffff8800192f0780 RDI: 0000000000000586 RBP: ffffffff81620de4 R8: ffff880019c5fd88 R9: ffff8800192f0780 R10: ffff8800192f0780 R11: ffffffff81054135 R12: ffff880019c5fd58 R13: 0000000000000586 R14: ffff8800191de000 R15: 0000000000000000 ORIG_RAX: ffff880019c5fe38 CS: 7fff4026c120 SS: 0000 bt: WARNING: possibly bogus exception frame #19 [ffff880019c5fe40] tun_chr_aio_write at ffffffffa0009e0b [tun] #20 [ffff880019c5fe70] do_sync_write at ffffffff8115c665 #21 [ffff880019c5ff00] vfs_write at ffffffff8115d38a #22 [ffff880019c5ff40] sys_write at ffffffff8115d89a #23 [ffff880019c5ff80] system_call_fastpath at ffffffff817f1f29 RIP: 00007fcaf8b9537d RSP: 00007fff4026c3a8 RFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffffff817f1f29 RCX: 0000000000000084 RDX: 0000000000000586 RSI: 00000000013e2f00 RDI: 0000000000000009 RBP: 0000000000000586 R8: 00007fcaf8b7e400 R9: 00007fff4026b868 R10: 00007fff4026bfaf R11: 0000000000000293 R12: 00000000013d64d8 R13: 0000000000000001 R14: 00000000013e2ef0 R15: 00000000013c46e0 ORIG_RAX: 0000000000000001 CS: 0033 SS: 002b
crash> log [ 81.953301] tun: Universal TUN/TAP device driver, 1.6 [ 81.953305] tun: (C) 1999-2004 Max Krasnyansky maxk@qualcomm.com [ 83.183042] batman_adv: B.A.T.M.A.N. advanced 2014.3.0 (compatibility version 15) loaded [ 83.444516] batman_adv: bat0: Adding interface: fastd0 [ 83.444520] batman_adv: bat0: The MTU of interface fastd0 is too small (1426) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 83.444524] batman_adv: bat0: Interface activated: fastd0 [ 83.445515] batman_adv: bat0: orig_interval: Changing from: 1000 to: 5000 [ 83.446957] batman_adv: bat0: bridge_loop_avoidance: Changing from: disabled to: enabled [ 83.447682] batman_adv: bat0: Changing gw mode from: off to: client [ 132.723904] ipip: IPv4 over IPv4 tunneling driver [ 188.931093] batman_adv: bat0: Changing gw mode from: client to: server [ 188.931117] batman_adv: bat0: Changing gateway bandwidth from: '10.0/2.0 MBit' to: '100.0/100.0 MBit' [ 317.574742] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead. [ 2809.763665] skbuff: skb_over_panic: text:ffffffffa001be12 len:1472 put:1380 head:ffff88000719b400 data:ffff88000719b462 tail:0x622 end:0x2c0 dev:fastd0 [ 2809.763978] ------------[ cut here ]------------ [ 2809.764097] kernel BUG at net/core/skbuff.c:100! [ 2809.764195] invalid opcode: 0000 [#1] SMP [ 2809.764297] Modules linked in: xt_nat iptable_nat nf_nat_ipv4 nf_nat ipip batman_adv libcrc32c tun crc32c_intel [ 2809.764604] CPU: 0 PID: 1971 Comm: fastd Not tainted 3.16.7-gentoo #1 [ 2809.764604] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 2809.764604] task: ffff88001a31e0f0 ti: ffff880019c5c000 task.ti: ffff880019c5c000 [ 2809.764604] RIP: 0010:[<ffffffff817eb99d>] [<ffffffff817eb99d>] skb_panic+0x5e/0x60 [ 2809.764604] RSP: 0018:ffff88001fc03cf8 EFLAGS: 00010296 [ 2809.764604] RAX: 000000000000008b RBX: ffff8800057c9860 RCX: 0000000000000092 [ 2809.764604] RDX: 000000000000003c RSI: 0000000000000046 RDI: 0000000000000246 [ 2809.764604] RBP: ffff88001fc03d18 R08: 0000000000000000 R09: 0000000000000000 [ 2809.764604] R10: 00000000000001a5 R11: 0000000000000006 R12: 0000000000000564 [ 2809.764604] R13: ffff88001fc03da0 R14: ffff8800191def00 R15: ffff880019200062 [ 2809.764604] FS: 00007fcaf9841700(0000) GS:ffff88001fc00000(0000) knlGS:0000000000000000 [ 2809.764604] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2809.764604] CR2: 00007f0953452000 CR3: 00000000191da000 CR4: 00000000000006f0 [ 2809.764604] Stack: [ 2809.764604] ffff88000719b462 0000000000000622 00000000000002c0 ffff8800192f0000 [ 2809.764604] ffff88001fc03d28 ffffffff81611bb1 ffff88001fc03d88 ffffffffa001be12 [ 2809.764604] ffff88001f33d168 ffff88001920004e ffff88001fc03d78 ffff8800057c9860 [ 2809.764604] Call Trace: [ 2809.764604] <IRQ> [ 2809.764604] [ 2809.764604] [<ffffffff81611bb1>] skb_put+0x41/0x50 [ 2809.764604] [<ffffffffa001be12>] batadv_frag_skb_buffer+0x272/0x470 [batman_adv] [ 2809.764604] [<ffffffffa0026273>] batadv_recv_frag_packet+0x183/0x200 [batman_adv] [ 2809.764604] [<ffffffffa001fef5>] batadv_batman_skb_recv+0xd5/0x110 [batman_adv] [ 2809.764604] [<ffffffff81621962>] __netif_receive_skb_core+0x222/0x730 [ 2809.764604] [<ffffffff81621e91>] __netif_receive_skb+0x21/0x70 [ 2809.764604] [<ffffffff81621f7e>] process_backlog+0x9e/0x170 [ 2809.764604] [<ffffffff81622731>] net_rx_action+0x141/0x240 [ 2809.764604] [<ffffffff81053ef8>] __do_softirq+0xe8/0x280 [ 2809.764604] [<ffffffff817f3a5c>] do_softirq_own_stack+0x1c/0x30 [ 2809.764604] <EOI> [ 2809.764604] [ 2809.764604] [<ffffffff81054135>] do_softirq+0x55/0x60 [ 2809.764604] [<ffffffff816210b4>] netif_rx_ni+0x34/0x70 [ 2809.764604] [<ffffffffa00098f0>] tun_get_user+0x420/0x840 [tun] [ 2809.764604] [<ffffffffa0009e0b>] tun_chr_aio_write+0x7b/0xa0 [tun] [ 2809.764604] [<ffffffff8115c665>] do_sync_write+0x55/0x90 [ 2809.764604] [<ffffffff8115d38a>] vfs_write+0xba/0x1f0 [ 2809.764604] [<ffffffff8115d89a>] SyS_write+0x4a/0xa0 [ 2809.764604] [<ffffffff817f1f29>] system_call_fastpath+0x16/0x1b [ 2809.764604] Code: 00 00 48 89 44 24 10 8b 87 c0 00 00 00 48 89 44 24 08 48 8b 87 d0 00 00 00 48 c7 c7 30 67 a3 81 48 89 04 24 31 c0 e8 0d 8b ff ff <0f> 0b 55 48 89 f8 48 8b 57 30 48 89 e5 48 8b 0f 5d 80 e5 80 48 [ 2809.764604] RIP [<ffffffff817eb99d>] skb_panic+0x5e/0x60 [ 2809.764604] RSP <ffff88001fc03cf8>