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Date: Fri, 5 Aug 2011 13:14:50 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
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To: Dave Jones <davej@redhat.com>
cc: Pekka Enberg <penberg@kernel.org>,
        Markus Trippelsdorf <markus@trippelsdorf.de>,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Jens Axboe <jaxboe@fusionio.com>
Subject: Re: list corruption in the last few days. (block ? crypto ?)
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On Fri, 5 Aug 2011, Dave Jones wrote:

>  > Argh another debugging code issue. Anyone who sees this please verify that
>  > it also occurs with debugging off. I ran this code for 9 months in
>  > various configs but only sporadically with debugging support since that
>  > switches the lockless stuff.
>
> This started turning up immediately as soon as it got merged to mainline.
> Which leads me to believe no-one is running -next with debugging on either.
> Perhaps we should force debugging on for a week once per release cycle.

I have run some tests over the last hours with kvm and
CONFIG_SLUB_DEBUG_ON as well as CONFIG_DEBUG_LIST set but (aside from
other unrelated backtraces in other subsystems) did not see this issue.

Can I get a .config? Maybe that will help.