linux-kernel - Re: cfq: oops in __call_for_each

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Message-ID: <4C6179DD.7010000@kernel.dk>
Date:	Tue, 10 Aug 2010 12:10:05 -0400
From:	Jens Axboe <axboe@...nel.dk>
To:	Jeff Layton <jlayton@...hat.com>
CC:	Jeff Moyer <jmoyer@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: cfq: oops in __call_for_each_cic

On 08/10/2010 10:27 AM, Jeff Layton wrote:
> On Tue, 10 Aug 2010 10:22:41 -0400
> Jeff Moyer <jmoyer@...hat.com> wrote:
> 
>> Jeff Layton <jlayton@...hat.com> writes:
>>
>>> Saw this oops on my test machine this morning. I rebooted the machine
>>> last night and hadn't done anything on it other than log in this
>>> morning. The kernel here is based on Steve French's git tree, which is
>>> based on Linus' as of Sunday Aug 8th. Last non-cifs commit is:
>>
>> This looks a lot like this bug:
>>   https://bugzilla.redhat.com/show_bug.cgi?id=577968
>>
>> See also:
>>   http://kerneloops.org/guilty.php?guilty=cfq_free_io_context&version=2.6.34-rc&start=2228224&end=2260991&class=oops
>>
>> It's been around since 2.6.30.8 according to kerneloops.org.  If you
>> find that you have a reliable way of reproducing the issue, that would
>> be great.
>>
> 
> Ok, thanks -- no clear reproducer so far. This morning was the
> first time I've seen it and it was on the console of my rawhide
> machine. The last thing I did with it was reboot it last night. I
> suspect that the gzip process came from a cron job or something.

What version did you hit it on?

-- 
Jens Axboe

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