Messages in this thread | | | Date | Wed, 18 Apr 2012 10:37:51 +0400 | Subject | Re: 3.4.0-rc2: skb_put() -> skb_over_panic | From | Alexander Beregalov <> |
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On 18 April 2012 00:45, Eric Dumazet <eric.dumazet@gmail.com> wrote: > On Wed, 2012-04-18 at 00:15 +0400, Alexander Beregalov wrote: >> On 15 April 2012 19:16, Eric Dumazet <eric.dumazet@gmail.com> wrote: >> > On Sun, 2012-04-15 at 16:24 +0400, Alexander Beregalov wrote: >> >> Hi >> >> >> >> kernel 3.4.0-rc2-00333-g668ce0a >> >> >> >> calltrace is lost on netconsole, sorry. >> >> >> >> ethernet is realtek/r8169 >> >> >> >> It happened already two times with rtorrent, perhaps I can reproduce >> >> it, what else can I provide to you? >> >> >> > full stack trace needed please. >> > >> >> This time calltrace is different (I saw few last lines of calltrace on >> a display, but not enough) and netconsole transmitted complete >> message, but perhaps it is the same problem. At least 'end' is the >> same. >> >> >> skb_over_panic: text:ffffffff8136d919 len:1248 put:932 >> head:ffff8800babcf800 data:ffff8800babcfd10 tail:0x9f0 end:0x6c0 >> dev:<NULL> >> ------------[ cut here ]------------ >> kernel BUG at net/core/skbuff.c:127! >> invalid opcode: 0000 [#1] SMP >> CPU 3 >> Modules linked in: >> >> Pid: 1926, comm: rtorrent Not tainted 3.4.0-rc2-00333-g668ce0a #1 >> /D525MW >> RIP: 0010:[<ffffffff8132414a>] [<ffffffff8132414a>] skb_put+0x7c/0x86 >> RSP: 0018:ffff8800bed83d60 EFLAGS: 00010246 >> RAX: 0000000000000098 RBX: ffff8800b0b244c0 RCX: 000000000000003d >> RDX: 000000000000000d RSI: 0000000000000046 RDI: ffffffff8162a0b0 >> RBP: ffff8800bed83d80 R08: 0000000000000001 R09: 0000000000000000 >> R10: ffff88002ed840c0 R11: 00000000007e28f6 R12: ffff8800b9cb9180 >> R13: ffff8800b9cb96c0 R14: ffff8800b9cb91a8 R15: ffff8800b0b245a0 >> FS: 00007fe639e75720(0000) GS:ffff8800bed80000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00007fe63571a000 CR3: 00000000b53fa000 CR4: 00000000000007e0 >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> Process rtorrent (pid: 1926, threadinfo ffff8800bb0a0000, task ffff8800bb1dddc0) >> Stack: >> 00000000000009f0 00000000000006c0 ffffffff814d06e7 ffff8800b9cb9180 >> ffff8800bed83de0 ffffffff8136d919 ffff8800000003a4 0000013c81536640 >> ffff8800b0b245a0 000000cc00000006 ffff8800b0b244c0 ffff8800b0b244c0 >> Call Trace: >> <IRQ> >> [<ffffffff8136d919>] tcp_retransmit_skb+0x29a/0x529 >> [<ffffffff8136eebd>] tcp_retransmit_timer+0x358/0x4e7 >> [<ffffffff8136f0e8>] tcp_write_timer+0x9c/0x17d >> [<ffffffff81035bd0>] run_timer_softirq+0x1eb/0x2bf >> [<ffffffff8136f04c>] ? tcp_retransmit_timer+0x4e7/0x4e7 >> [<ffffffff810184e9>] ? native_smp_send_reschedule+0x4f/0x51 >> [<ffffffff8102fb52>] __do_softirq+0xbf/0x17d >> [<ffffffff810188ec>] ? lapic_next_event+0x18/0x1c >> [<ffffffff813c05cc>] call_softirq+0x1c/0x30 >> [<ffffffff810033d6>] do_softirq+0x33/0x69 >> [<ffffffff8102fdc6>] irq_exit+0x44/0x9c >> [<ffffffff81018c6f>] smp_apic_timer_interrupt+0x86/0x94 >> [<ffffffff813bfe47>] apic_timer_interrupt+0x67/0x70 >> <EOI> >> [<ffffffff8131d87e>] ? sock_sendmsg+0xe6/0x106 >> [<ffffffff8135fb7b>] ? tcp_poll+0xaf/0x168 >> [<ffffffff810ff814>] ? ep_send_events_proc+0x67/0x116 >> [<ffffffff8131b8ef>] sock_poll+0x15/0x17 >> [<ffffffff810ff823>] ep_send_events_proc+0x76/0x116 >> [<ffffffff810ff7ad>] ? ep_read_events_proc+0x99/0x99 >> [<ffffffff810fff24>] ep_scan_ready_list.clone.6+0x8f/0x16f >> [<ffffffff81100277>] ep_poll+0x25f/0x2e2 >> [<ffffffff8131e886>] ? sys_accept4+0x133/0x15f >> [<ffffffff81100d8e>] sys_epoll_wait+0x90/0xae >> [<ffffffff813bf2e6>] system_call_fastpath+0x1a/0x1f >> Code: 8b 57 60 48 89 44 24 10 8b 87 ac 00 00 00 48 89 44 24 08 31 c0 >> 8b bf a8 00 00 00 48 89 3c 24 48 c7 c7 43 07 4d 81 e8 2c 27 09 00 <0f> >> 0b 89 c0 49 8d 04 00 c9 c3 55 48 89 e5 41 57 41 56 41 55 41 >> RIP [<ffffffff8132414a>] skb_put+0x7c/0x86 >> RSP <ffff8800bed83d60> >> ---[ end trace a721715cd86be064 ]--- > > Thanks a lot, I belive I know where the problem is. > > Could you check if commit a21d45726acacc963d8baddf74607d9b74e2b723 > (tcp: avoid order-1 allocations on wifi and tx path) > was in your tree ? >
It was, git show a21d4572 v3.4-rc2..668ce0a shows it -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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