linux-kernel - Re: [PATCH] slub: prevent validate_slab() error due to race condition

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Message-ID: <alpine.DEB.2.00.1205011522340.2091@router.home>
Date:	Tue, 1 May 2012 15:23:43 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Pekka Enberg <penberg@...nel.org>
cc:	Waiman Long <waiman.long@...com>,
	"mpm@...enic.com" <mpm@...enic.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Morris, Donald George \(HP-UX Cupertino\)" <don.morris@...com>,
	David Rientjes <rientjes@...gle.com>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH] slub: prevent validate_slab() error due to race
 condition

On Mon, 30 Apr 2012, Pekka Enberg wrote:

> On Fri, Apr 27, 2012 at 11:10 PM, Waiman Long <waiman.long@...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.

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