linux-kernel - Re: BUG: using smp_processor_id() in preemptible [00000000] code: icedove-bin/5449

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Date:	Wed, 26 May 2010 04:06:03 +0200
From:	Piotr Hosowicz <piotr@...owicz.com>
To:	piotr@...owicz.com
CC:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>,
	Divyesh Shah <dpshah@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: BUG: using smp_processor_id() in preemptible [00000000] code:
 icedove-bin/5449

On 25.05.2010 18:47, Piotr Hosowicz wrote:
> On 25.05.2010 18:15, Peter Zijlstra wrote:
>> On Tue, 2010-05-25 at 16:48 +0200, Piotr Hosowicz wrote:
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523288] BUG: using
>>> smp_processor_id() in preemptible [00000000] code: shutdown/16256
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523296] caller is
>>> dqstats_inc+0x19/0x2c
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523299] Pid: 16256, comm:
>>> shutdown Tainted: P W 2.6.34-20100524-1752-patched #1
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523301] Call Trace:
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523308] [<ffffffff811a537b>]
>>> debug_smp_processor_id+0xc7/0xe0
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523311] [<ffffffff8112c0ad>]
>>> dqstats_inc+0x19/0x2c
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523314] [<ffffffff8112ee66>]
>>> vfs_quota_sync+0x1b1/0x293
>>> May 25 15:04:35 aapi205 kernel: [ 9694.523319] [<ffffffff8103bf21>] ?
>>> wake_up_process+0x10/0x12
>>
>> That's a different issue, see:
>>
>> http://lkml.org/lkml/2010/5/22/164
>
> I do not understand fully - does that mean I have to revert commit
> a7cf4145b? And how to do it? Let's assume I git-pulled the source. What
> should be next steps.

Ok, my fault, now I know how to revert. But I still do not know if this 
is the right solution you meant. In the meantime I build the kernel 
after revert.

Regards and sorry for the noise.

Piotr Hosowicz

-- 
 > Jeden z powodów, dla których KRK nie był skłonny do
 > oddawania Biblii w ręce pospólstwa. Po rozmowie z
 > Jehowitami często można zrozumieć, dlaczego.
Tak. Ja na przykład zrozumiałem że Jan Chrzciciel był
kolejarzem - bo: "z kolei udał się nad Jordan".
NP: Patrick O'Hearn - Magnificent River
NB: 2.6.34-20100525-1754-patched
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