linux-kernel - Re: [PATCH] sched: numa: ksm: fix oops in task_numa

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Message-ID: <20121220111405.GE10819@suse.de>
Date:	Thu, 20 Dec 2012 11:14:05 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Sasha Levin <sasha.levin@...cle.com>,
	Petr Holasek <pholasek@...hat.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] sched: numa: ksm: fix oops in task_numa_placment()

On Wed, Dec 19, 2012 at 05:42:16PM -0800, Hugh Dickins wrote:
> task_numa_placement() oopsed on NULL p->mm when task_numa_fault()
> got called in the handling of break_ksm() for ksmd.  That might be a
> peculiar case, which perhaps KSM could takes steps to avoid? but it's
> more robust if task_numa_placement() allows for such a possibility.
> 
> Signed-off-by: Hugh Dickins <hughd@...gle.com>

Acked-by: Mel Gorman <mgorman@...e.de>

-- 
Mel Gorman
SUSE Labs
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