linux-kernel - Re: 3.1.0-rc4: oops at elv_put

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Message-ID: <CA+55aFwEjVL6QH8x1=nS1g=tfdZKO2uN-nbMBaKcAThVfpDJXQ@mail.gmail.com>
Date:	Wed, 14 Sep 2011 00:02:00 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	axboe@...nel.dk, jbottomley@...allels.com,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org
Subject: Re: 3.1.0-rc4: oops at elv_put_request()

Re-sending selected emails that apparently never went out. But others
are likely just lost forever..

On Sun, Sep 11, 2011 at 2:47 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Sun, Sep 11, 2011 at 2:36 PM, Alexey Dobriyan <adobriyan@...il.com> wrote:
>> Caught this one, there was no real load at the moment.
>> FWIW, setup is ext4 over RAID-6 across 4 disks.
>
> Do you have the register state and oops address? Is it a NULL pointer,
> or a case of PAGE_ALLOC_DEBUG or what?
>
> There's commit 94007751bb02 that fixes one md-related oops ("Avoid
> dereferencing a 'request_queue' after last close") but that doesn't
> seem to be the case for you (it needs a __blkdev_put()).
>
>                     Linus
>
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