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Message-Id: <20120408195044.13ea6c8e.akpm@linux-foundation.org>
Date:	Sun, 8 Apr 2012 19:50:44 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	David Rientjes <rientjes@...gle.com>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>, werner <w.landgraf@...ru>,
	linux-kernel@...r.kernel.org
Subject: Re: v3.4-rc2 out-of-memory problems (was Re: 3.4-rc1
 sticks-and-crashs)

On Sun, 8 Apr 2012 19:42:31 -0700 Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> Guys, there's something wrong in the VM. Most likely suspects added to
> the participants list.
> 
> Apparently things go south and the oom killer is invoked. X.org seems
> to get killed.
> 
> Any hints? Werner traditionally finds problems by enabling every
> single config option there is, I assume this is another of those
> kernes..
> 
>
> ...
>
> > Apr __8 20:29:11 werner kernel: Normal free:44004kB min:44012kB low:55012kB
> > high:66016kB active_anon:0kB inactive_anon:0kB active_file:132kB
> > inactive_file:140kB unevictable:0kB isolated(anon):0kB isolated(file):0kB
> > present:885944kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB
> > slab_reclaimable:13068kB slab_unreclaimable:147784kB kernel_stack:628952kB
> > pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:1376
> > all_unreclaimable? yes

That's claiming that 600MB of ZONE_NORMAL is being used for kernel stacks.

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