linux-kernel - Re: [PATCH] exit: fix oops in sync_mm

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Message-ID: <20100316175123.GD5717@random.random>
Date:	Tue, 16 Mar 2010 18:51:23 +0100
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	cl@...ux-foundation.org, lee.schermerhorn@...com,
	rientjes@...gle.com, Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Rik van Riel <riel@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>,
	"David S. Miller" <davem@...emloft.net>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] exit: fix oops in sync_mm_rss

On Tue, Mar 16, 2010 at 07:08:08PM +0200, Michael S. Tsirkin wrote:
> The module in question calls use_mm and later unuse_mm from a kernel
> thread.  It is when this kernel thread is destroyed that the crash
> happens.

Looks good to me so the stats are transferred to mm before we lose
track of it.

Ack!
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