From: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
To: Dave Jones <davej@redhat.com>,
nicolas prochazka <prochazka.nicolas@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: oops in kernel ( 3.4.x -> 3.5rc )
Date: Fri, 20 Jul 2012 17:21:55 -0300 [thread overview]
Message-ID: <20120720202155.GB15677@oc1711230544.ibm.com> (raw)
In-Reply-To: <20120720132153.GA26110@redhat.com>
On Fri, Jul 20, 2012 at 09:21:53AM -0400, Dave Jones wrote:
> On Fri, Jul 20, 2012 at 11:56:06AM +0200, nicolas prochazka wrote:
>
> > [ 2384.900061] BUG: unable to handle kernel paging request at 000000010000002f
>
> That '1' looks like a random bit flip. Try running memtest86.
>
Looks more a 32-bit value of 1 followed by a 32-bit value of 0x2f. Most
likely a pointer to some other piece of a struct. However, taking a look
at fs/files.c code, nothing seems suspicious.
Nicolas, it wasn't clear to me if you had problems with 3.4 too. There
has been some changes in fs/files.c on 3.4-rc1 in the piece of code
where you hit the problem.
What does your system exercise? Any chance you are using a lot of
select, which has also been changed in those same patches to fs/files.c?
Regards.
Cascardo.
> > [ 2384.910010] Pid: 23838, comm: queue.sh Tainted: G D W
>
> This wasn't the first problem either.
>
> > [ 2397.885344] BUG: unable to handle kernel paging request at 000000010000003b
>
> Looks like the same flipped bit.
>
> Dave
>
> --
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next prev parent reply other threads:[~2012-07-20 20:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-20 9:56 oops in kernel ( 3.4.x -> 3.5rc ) nicolas prochazka
2012-07-20 13:21 ` Dave Jones
2012-07-20 13:32 ` nicolas prochazka
2012-07-20 20:21 ` Thadeu Lima de Souza Cascardo [this message]
2012-07-20 20:52 ` nicolas prochazka
2012-07-20 21:06 ` Thadeu Lima de Souza Cascardo
2012-07-20 22:59 ` nicolas prochazka
2012-07-23 16:39 ` Thadeu Lima de Souza Cascardo
2012-07-23 21:15 ` nicolas prochazka
2012-07-24 16:52 ` Thadeu Lima de Souza Cascardo
2012-07-28 7:52 ` nicolas prochazka
2012-08-08 10:44 ` nicolas prochazka
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