linux-kernel - Re: [RESEND PATCH] slub: fix high order page allocation problem with __GFP

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Message-ID: <alpine.DEB.2.02.1403121748590.17116@chino.kir.corp.google.com>
Date:	Wed, 12 Mar 2014 17:49:43 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
cc:	Pekka Enberg <penberg@...nel.org>,
	Christoph Lameter <cl@...ux.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Joonsoo Kim <js1304@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christian Casteyde <casteyde.christian@...e.fr>
Subject: Re: [RESEND PATCH] slub: fix high order page allocation problem with
  __GFP_NOFAIL

On Wed, 12 Mar 2014, Joonsoo Kim wrote:

> SLUB already try to allocate high order page with clearing __GFP_NOFAIL.
> But, when allocating shadow page for kmemcheck, it missed clearing
> the flag. This trigger WARN_ON_ONCE() reported by Christian Casteyde.
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=65991
> https://lkml.org/lkml/2013/12/3/764
> 
> This patch fix this situation by using same allocation flag as original
> allocation.
> 
> Reported-by: Christian Casteyde <casteyde.christian@...e.fr>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>

Acked-by: David Rientjes <rientjes@...gle.com>
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