linux-kernel - Oops in 2.6.29-6608-g15f7176 at tcp_enter

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Date:	Wed, 1 Apr 2009 22:21:43 +0100
From:	Grant Wilson <grant.wilson@....co.uk>
To:	lkml <linux-kernel@...r.kernel.org>
Subject: Oops in 2.6.29-6608-g15f7176 at tcp_enter_frto+0x128/0x2d0

I have also been suffering from warnings at tcp_input.c:2927 followed by an oops, so I set 
up netconsole and captured the following oops:

[  895.814265] BUG: unable to handle kernel NULL pointer dereference at 000000000000005d
[  895.814275] IP: [<ffffffff80687eb8>] tcp_enter_frto+0x128/0x2d0
[  895.814283] PGD 1a9d36067 PUD 1a8f14067 PMD 0
[  895.814292] Oops: 0000 [#1] PREEMPT SMP
[  895.814301] last sysfs file: /sys/devices/platform/it87.656/fan1_input
[  895.814304] CPU 5
[  895.814308] Modules linked in:
[  895.814314] Pid: 0, comm: swapper Tainted: G        W  2.6.29-6608-g15f7176 #1 EX58-UD5
[  895.814317] RIP: 0010:[<ffffffff80687eb8>]  [<ffffffff80687eb8>] tcp_enter_frto+0x128/0x2d0
[  895.814324] RSP: 0018:ffff880028184e50  EFLAGS: 00010246
[  895.814327] RAX: 0000000000000000 RBX: ffff8801a9aa8e00 RCX: 0000000000000000
[  895.814331] RDX: 0000000000000003 RSI: 0000000000000038 RDI: ffff8801a9aa8e00
[  895.814334] RBP: ffff880028184e60 R08: 0000000000000000 R09: 0000000000000000
[  895.814338] R10: ffff8800a8184b1f R11: 0000000000000000 R12: ffff8801a9aa8e00
[  895.814341] R13: 000000000000000f R14: ffff8801a9aa8f10 R15: ffff880028184ec0
[  895.814345] FS:  0000000000000000(0000) GS:ffff880028181000(0000) knlGS:0000000000000000
[  895.814349] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[  895.814352] CR2: 000000000000005d CR3: 00000001a9d4a000 CR4: 00000000000026e0
[  895.814356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  895.814359] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  895.814363] Process swapper (pid: 0, threadinfo ffff8801af8ec000, task ffff8801af8dd940)
[  895.814366] Stack:
[  895.814370]  ffff8801a9aa8e00 ffff8801a9aa8e40 ffff880028184e90 ffffffff80694afe
[  895.814379]  ffff8801a9aa8e00 0000000000000102 ffff8801af8e4000 ffffffff80694750
[  895.814391]  ffff880028184f00 ffffffff80275880 ffff8801af8e5c28 ffff8801af8e5828
[  895.814405] Call Trace:
[  895.814408]  <IRQ> <0> [<ffffffff80694afe>] tcp_write_timer+0x3ae/0x710
[  895.814416]  [<ffffffff80694750>] ? tcp_write_timer+0x0/0x710
[  895.814422]  [<ffffffff80275880>] run_timer_softirq+0x170/0x250
[  895.814429]  [<ffffffff80270bdc>] __do_softirq+0x8c/0x160
[  895.814435]  [<ffffffff8022f3fc>] call_softirq+0x1c/0x30
[  895.814441]  [<ffffffff802311e5>] do_softirq+0x55/0xa0
[  895.814447]  [<ffffffff8027088d>] irq_exit+0x7d/0xa0
[  895.814453]  [<ffffffff8024587d>] smp_apic_timer_interrupt+0x6d/0xa0
[  895.814459]  [<ffffffff8022ee03>] apic_timer_interrupt+0x13/0x20
[  895.814466]  <EOI> <0> [<ffffffff80236517>] ? mwait_idle+0x97/0xa0
[  895.814474]  [<ffffffff802364b5>] ? mwait_idle+0x35/0xa0
[  895.814480]  [<ffffffff8022d455>] ? cpu_idle+0x65/0xd0
[  895.814486]  [<ffffffff80737d34>] ? start_secondary+0x18b/0x1e7
[  895.814492] Code: 8b 8c 24 10 01 00 00 49 8d 84 24 10 01 00 00 41 c7 84 24 94 06 00 00 00 00 00 00 48 39 c8 b8 00 00 00 00 48 0f 44 c8 48 8d 71 38 <0f> b6 56 2
5 0f b6 c2 a8 82 74 13 41 c7 84 24 90 06 00 00 00 00
[  895.814609] RIP  [<ffffffff80687eb8>] tcp_enter_frto+0x128/0x2d0
[  895.814616]  RSP <ffff880028184e50>
[  895.814618] CR2: 000000000000005d
[  895.814628] ---[ end trace e33b2252cfac5fda ]---

Config attached.

Cheers,
Grant
Download attachment ".config" of type "application/octet-stream" (52491 bytes)