From mboxrd@z Thu Jan  1 00:00:00 1970
From: Simon Schubert <2@0x2c.org>
Subject: Re: BUG in skb_dequeue (skb->next is NULL)
Date: Wed, 01 Dec 2010 11:34:36 +0100
Message-ID: <4CF624BC.8030409@0x2c.org>
References: <alpine.LNX.2.00.1011071631550.2636@dyndns.pervalidus.net>	 <loom.20101201T095252-592@post.gmane.org> <1291199299.2856.499.camel@edumazet-laptop>
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Cc: linux-kernel@vger.kernel.org, netdev <netdev@vger.kernel.org>
To: Eric Dumazet <eric.dumazet@gmail.com>
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On 12/01/2010 11:28 AM, Eric Dumazet wrote:
> Le mercredi 01 d=C3=A9cembre 2010 =C3=A0 09:02 +0000, Simon Schubert a =
=C3=A9crit :
>> Fr=C3=A9d=C3=A9ric L. W. Meunier <2 <at> pervalidus.net> writes:
>=20
> CC netdev
>> RIP: 0010:[<ffffffff81459069>]  [<ffffffff81459069>] skb_dequeue+0x59/=
0x90
>> Call Trace:
>>  [<ffffffff814ef0fa>] unix_stream_recvmsg+0x1aa/0x790
>>  [<ffffffff8145124d>] sock_recvmsg+0xfd/0x130
>>  [<ffffffff81155fd0>] ? pollwake+0x0/0x60
>>  [<ffffffff81452b54>] __sys_recvmsg+0x144/0x2e0
>>  [<ffffffff81155fd0>] ? pollwake+0x0/0x60
>>  [<ffffffff8104d88a>] ? finish_task_switch+0x4a/0xd0
>>  [<ffffffff8154fa91>] ? schedule+0x411/0xa50
>>  [<ffffffff81452f99>] sys_recvmsg+0x49/0x80
>>  [<ffffffff8100b0b2>] system_call_fastpath+0x16/0x1b
>=20
> Is it reproductible ?

I can't trigger it on purpose, but it happened two nights in a row (I
don't have the previous backtrace though)

> On previous kernel (say 2.6.35) you never hit this bug ?

No.

cheers
  simon


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