linux-kernel - Re: Current Git: BUG: unable to handle kernel paging request at 0000000001a40ca0

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Date:	Thu, 24 Jul 2008 19:53:37 +0200
From:	Dieter Ries <clip2@....de>
To:	Pekka Enberg <penberg@...helsinki.fi>
CC:	Vegard Nossum <vegard.nossum@...il.com>,
	linux-kernel@...r.kernel.org, jgarzik@...ox.com,
	netdev@...r.kernel.org, jeffrey.t.kirsher@...el.com,
	e1000-devel@...ts.sourceforge.net,
	Patrick McHardy <kaber@...sh.net>, Ingo Molnar <mingo@...e.hu>
Subject: Re: Current Git: BUG: unable to handle kernel paging request at 0000000001a40ca0

Pekka Enberg schrieb:
> Hi Dieter,

Hi,

> 
> On Thu, Jul 24, 2008 at 9:51 AM, Dieter Ries <clip2@....de> wrote:
>> I think I managed to catch one of those:
>>
>>
>> general protection fault: 0000 [1] SMP
>> CPU 0
>> Modules linked in:
>> Pid: 0, comm: swapper Not tainted 2.6.26-06373-gcaf076e #49
>> RIP: 0010:[<ffffffff805e08f9>]  [<ffffffff805e08f9>]
>> nf_nat_move_storage+0x21/0x7a
>> RSP: 0018:ffffffff8091ab80  EFLAGS: 00010206
>> RAX: ffffffff805e08d8 RBX: ffff88007d1fb948 RCX: 000000000000006b
>> RDX: ffff88007d175e10 RSI: ffff88007d175e7b RDI: ffff88007d1fb948
>> RBP: ffffffff8091aba0 R08: 0000000000000000 R09: ffff88007d175e90
>> R10: ffffe20000000008 R11: ffff88007d175e10 R12: 59d2c3ffff88007d
>> R13: ffff88007d175e7b R14: 00000000000000a0 R15: 0000000000000001
>> FS:  0000000000000000(0000) GS:ffffffff8089ee80(0000) knlGS:0000000000000000
>> CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
>> CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006e0
>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
>> Process swapper (pid: 0, threadinfo ffffffff808b0000, task ffffffff80842340)
>> Stack:  0000000000000002 ffff88007d3d2000 ffff88007d1fb948 0000000000000070
>>  ffffffff8091abf0 ffffffff8059d3c4 ffffffff8091ac40 0000000100000001
>>  ffffffff809e3658 ffff88007d3d2000 0000000000000002 ffff88007f9f6500
>> Call Trace:
>>  <IRQ>  [<ffffffff8059d3c4>] __nf_ct_ext_add+0x15f/0x1f7
>>  [<ffffffff805e762c>] nf_nat_fn+0x84/0x152
>>  [<ffffffff805e77d8>] nf_nat_in+0x2f/0x71
>>  [<ffffffff805953d8>] nf_iterate+0x48/0x85
>>  [<ffffffff805b19c0>] ? ip_rcv_finish+0x0/0x35d
>>  [<ffffffff80595478>] nf_hook_slow+0x63/0xcb
>>  [<ffffffff805b19c0>] ? ip_rcv_finish+0x0/0x35d
>>  [<ffffffff8028fe7c>] ? __slab_alloc+0x413/0x4bd
>>  [<ffffffff805b21b8>] ip_rcv+0x257/0x297
>>  [<ffffffff80581461>] netif_receive_skb+0x1f1/0x263
>>  [<ffffffff80495b34>] e1000_receive_skb+0x46/0x5d
>>  [<ffffffff8049830b>] e1000_clean_rx_irq+0x20e/0x2a6
>>  [<ffffffff8024cce8>] ? getnstimeofday+0x3f/0xa0
>>  [<ffffffff804952ce>] e1000_clean+0x6d/0x218
>>  [<ffffffff8024ad39>] ? hrtimer_get_next_event+0xa8/0xb8
>>  [<ffffffff80583569>] net_rx_action+0xa9/0x17c
>>  [<ffffffff80239b51>] __do_softirq+0x65/0xd5
>>  [<ffffffff8020c5dc>] call_softirq+0x1c/0x28
>>  [<ffffffff8020dd0a>] do_softirq+0x39/0x77
>>  [<ffffffff80239aab>] irq_exit+0x44/0x85
>>  [<ffffffff8020dff5>] do_IRQ+0x147/0x16a
>>  [<ffffffff8020b8a1>] ret_from_intr+0x0/0xa
> 
> Dieter, can you please try this patch:
> 
> http://lkml.org/lkml/2008/7/24/186
> 
> Patrick, it looks like this could be the same bug Ingo is hitting?
> 

it looks like it is fixed with the patch. But I (still/now) have the 
following Warning:


WARNING: at net/core/dev.c:1344 __netif_schedule+0x31/0x79()
Modules linked in:
Pid: 9, comm: events/0 Not tainted 2.6.26-06371-g338b9bb-dirty #51

Call Trace:
  [<ffffffff80234c3a>] warn_on_slowpath+0x5d/0x92
  [<ffffffff8023dc24>] ? lock_timer_base+0x2b/0x4f
  [<ffffffff8023dde1>] ? __mod_timer+0xc6/0xd8
  [<ffffffff8026820a>] ? ftrace_record_ip+0x211/0x262
  [<ffffffff8020b1e4>] ? mcount_call+0x5/0x31
  [<ffffffff805802bf>] __netif_schedule+0x31/0x79
  [<ffffffff80498890>] e1000_watchdog_task+0x47d/0x695
  [<ffffffff80498413>] ? e1000_watchdog_task+0x0/0x695
  [<ffffffff80244454>] run_workqueue+0x81/0x10a
  [<ffffffff80244e46>] worker_thread+0xdd/0xea
  [<ffffffff80247b3d>] ? autoremove_wake_function+0x0/0x3d
  [<ffffffff80244d69>] ? worker_thread+0x0/0xea
  [<ffffffff80247a0a>] kthread+0x4e/0x7c
  [<ffffffff8020c279>] child_rip+0xa/0x11
  [<ffffffff802479bc>] ? kthread+0x0/0x7c
  [<ffffffff8020c26f>] ? child_rip+0x0/0x11

---[ end trace a344035e20d497ce ]---

but this is work in progress I guess.

Thanks for support!

cu
Dieter
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