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Date: Tue, 1 May 2012 15:23:43 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
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To: Pekka Enberg <penberg@kernel.org>
cc: Waiman Long <waiman.long@hp.com>, "mpm@selenic.com" <mpm@selenic.com>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "Morris, Donald George \(HP-UX Cupertino\)" <don.morris@hp.com>,
        David Rientjes <rientjes@google.com>,
        Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH] slub: prevent validate_slab() error due to race
 condition
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On Mon, 30 Apr 2012, Pekka Enberg wrote:

> On Fri, Apr 27, 2012 at 11:10 PM, Waiman Long <waiman.long@hp.com> wrote:
> > Thank for the quick response. I have no problem for moving the node-lock
> > taking into free_debug_processing. Of the 2 problems that are reported, this
> > is a more serious one and so need to be fixed sooner rather than later. For
> > the other one, we can take more time to find a better solution.
> >
> > So are you going to integrate your change to the mainline?
>
> Christoph, can you send the patch with an improved changelog that also
> explains what the problem is?


Will do so once I get back from the conference I am at.

> How far back in the stable series do we want to backport this?

This only affects slab validation when running with deubgging so I would
suggest to merge in the next cycle.