Return-Path: <linux-kernel-owner+w=401wt.eu-S1754038AbYGGHcw@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1754038AbYGGHcw (ORCPT <rfc822;w@1wt.eu>);
	Mon, 7 Jul 2008 03:32:52 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750929AbYGGHcn
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Mon, 7 Jul 2008 03:32:43 -0400
Received: from wf-out-1314.google.com ([209.85.200.170]:59993 "EHLO
	wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1750827AbYGGHcn (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Mon, 7 Jul 2008 03:32:43 -0400
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:to:subject:cc:in-reply-to:mime-version
         :content-type:content-transfer-encoding:content-disposition
         :references;
        b=rbBIXZPUmgmISWhIhSGdGWSRKhmT+ZDqoMgZ66KHLO4KeMcYC1w1/bWqsue0BGkmx2
         hCJMyhLjRU2dvrWWWkVRhdpKess+MWu5Yn5b5ToMzFbP/BTGUgUiHKVrqcdkVNxRyNuL
         CcjohYLlfHgTAqdPpGoPMJA18OtIFllW2WZkE=
Message-ID: <19f34abd0807070032wb6a2d50s99de5950132016f5@mail.gmail.com>
Date: Mon, 7 Jul 2008 09:32:41 +0200
From: "Vegard Nossum" <vegard.nossum@gmail.com>
To: "Alexander Beregalov" <a.beregalov@gmail.com>
Subject: Re: next-0704: WARNING: at kernel/sched.c:4254 add_preempt_count; PANIC
Cc: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
       linux-next@vger.kernel.org, mingo@elte.hu, linux-mm@kvack.org
In-Reply-To: <487159DA.708@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <487159DA.708@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1823
Lines: 51

On Mon, Jul 7, 2008 at 1:48 AM, Alexander Beregalov
<a.beregalov@gmail.com> wrote:
> Hi
>
> WARNING: at kernel/sched.c:4254 add_preempt_count+0x61/0x63()
> Modules linked in: i2c_nforce2
> Pid: 3620, comm: rtorrent Not tainted 2.6.26-rc8-next-20080704 #5
>  [<c038e436>] ? printk+0xf/0x11
>  [<c011b681>] warn_on_slowpath+0x41/0x7b
>  [<c0157a94>] ? mmap_region+0x1c5/0x414
>  [<c0156499>] ? remove_vma+0x50/0x56
>  [<c0159836>] ? anon_vma_prepare+0x52/0xc5
...

> BUG: unable to handle kernel paging request at fffef4f1
> IP: [<c0103c53>] dump_trace+0xa5/0xe2
> *pde = 00007067 *pte = 00000000
> Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
> last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.1/class
> Modules linked in: i2c_nforce2
>
> Pid: 3620, comm: rtorrent Not tainted (2.6.26-rc8-next-20080704 #5)
> EIP: 0060:[<c0103c53>] EFLAGS: 00210097 CPU: 0
> EIP is at dump_trace+0xa5/0xe2
> EAX: fffefffc EBX: fffef4f1 ECX: c0396978 EDX: c0455a08
> ESI: 5a5a5a5a EDI: f4d4c084 EBP: f4d4bf34 ESP: f4d4bf14

^--- POISON_INUSE

But I don't know if this is really significant, given that it's not
the first error you're getting. It may also be just a remnant of the
memset() that marks the SLUB objects as such. (Or something like
that.)

Too bad the recursive page fault stops us from getting the Code: line.

Config would be nice :-)


Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
--
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/