Return-Path: <linux-kernel-owner+w=401wt.eu-S1757229AbYGXMo2@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1757229AbYGXMo2 (ORCPT <rfc822;w@1wt.eu>);
	Thu, 24 Jul 2008 08:44:28 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753275AbYGXMoQ
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Thu, 24 Jul 2008 08:44:16 -0400
Received: from rv-out-0506.google.com ([209.85.198.234]:55993 "EHLO
	rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752177AbYGXMoP (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 24 Jul 2008 08:44:15 -0400
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version
         :content-type:content-transfer-encoding:content-disposition
         :references:x-google-sender-auth;
        b=jvMEUXCv876nF6tBHAxhTnCxHNhk3k41g5/bVInYGzGgU8FYKEqBSDDF0Wpo9c/b8E
         iU/eUOfCXkNAlDnCCu4C0MWNv305slrRUpZHMScCg8R6hu1kAWOsDGLOJKdmJ2xdVvhR
         uK5JF8cuokqAZzs4Wca1nUdaM6CTuohy+J7Lo=
Message-ID: <84144f020807240544q507e1b7cv220d1afbae0ee0f0@mail.gmail.com>
Date: Thu, 24 Jul 2008 15:44:14 +0300
From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Patrick McHardy" <kaber@trash.net>
Subject: Re: [regression] nf_iterate(), BUG: unable to handle kernel NULL pointer dereference
Cc: "Ingo Molnar" <mingo@elte.hu>, "David Miller" <davem@davemloft.net>,
       herbert@gondor.apana.org.au, w@1wt.eu, davidn@davidnewall.com,
       torvalds@linux-foundation.org, akpm@linux-foundation.org,
       netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
       stefanr@s5r6.in-berlin.de, rjw@sisk.pl, ilpo.jarvinen@helsinki.fi,
       "Dave Jones" <davej@redhat.com>
In-Reply-To: <48886FA6.6050908@trash.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <20080724060448.GA10203@elte.hu>
	 <E1KLwlD-0001Ub-00@gondolin.me.apana.org.au>
	 <20080724.022259.113079007.davem@davemloft.net>
	 <20080724093411.GA12001@elte.hu> <20080724115625.GA23994@elte.hu>
	 <20080724115957.GA25701@elte.hu> <48886FA6.6050908@trash.net>
X-Google-Sender-Auth: ada5bf296faf6bb1
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 2063
Lines: 43

On Thu, Jul 24, 2008 at 3:03 PM, Patrick McHardy <kaber@trash.net> wrote:
> Ingo Molnar wrote:
>>
>> * Ingo Molnar <mingo@elte.hu> wrote:
>>
>>> here's a new type of crash a -tip testbox triggered today:
>>>
>>> BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
>>> IP: [<0000000000000000>] 0x0
>>> PGD 0 Oops: 0010 [1] PREEMPT CPU 0 Pid: 5331, comm: ssh Not tainted
>>> 2.6.26 #21613
>>> RIP: 0010:[<0000000000000000>]  [<0000000000000000>] 0x0
>>> RSP: 0018:ffff88003b959a70  EFLAGS: 00010217
>>> RAX: ffff88003b9ba91c RBX: ffff88003b9baac0 RCX: 0000000000000002
>>> RDX: ffff88003b9baac0 RSI: 0000000000000014 RDI: ffff88003b9ba3d8
>>> RBP: ffff88003b959a98 R08: ffff88003e434130 R09: ffff88003b9598b8
>>> R10: 0000000000002000 R11: 00000000d85507ac R12: ffff88003b9ba3d8
>>> R13: 0000000000000002 R14: ffff88003e06a020 R15: 0000000000000000
>>> FS:  00007fb2b7806780(0000) GS:ffffffff80c1c180(0000)
>>> knlGS:0000000000000000
>>> CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>>> CR2: 0000000000000000 CR3: 000000003b9e8000 CR4: 00000000000006a0
>>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
>>> Process ssh (pid: 5331, threadinfo ffff88003b958000, task
>>> ffff88003b99a000)
>>> Stack:  ffffffff80777f25 ffff88003b959a98 ffffffff80c24170
>>> ffff88003b959b28
>>>  0000000000000004 ffff88003b959ae8 ffffffff80733107 ffff88003b959ab8
>>>  ffff88003b9ba3d8 ffffffff80c1ed60 0000000000000004 ffff88003b9ba3d8
>>> Call Trace:
>>>  [<ffffffff80777f25>] ? ipv4_confirm+0x8d/0x122
>>>  [<ffffffff80733107>] nf_iterate+0x43/0xa5
>
> Does reverting 31d8519c fix this?

Hmm, why do you think it's related? It looks like elem->hook() is a
NULL pointer but my patch shouldn't make any difference here...
--
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/