Date: Wed, 18 Jun 2008 00:34:16 +0900
From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Subject: Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6.26-rc5-mm3)
Cc: kosaki.motohiro@jp.fujitsu.com, Andrew Morton <akpm@linux-foundation.org>,
       Rik van Riel <riel@redhat.com>,
       Lee Schermerhorn <lee.schermerhorn@hp.com>,
       Nick Piggin <npiggin@suse.de>, linux-mm@kvack.org,
       linux-kernel@vger.kernel.org, kernel-testers@vger.kernel.org
In-Reply-To: <20080617164709.de4db070.nishimura@mxp.nes.nec.co.jp>
References: <20080617163501.7cf411ee.nishimura@mxp.nes.nec.co.jp> <20080617164709.de4db070.nishimura@mxp.nes.nec.co.jp>
Message-Id: <20080618003334.DE2A.KOSAKI.MOTOHIRO@jp.fujitsu.com>
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> > I got this bug while migrating pages only a few times
> > via memory_migrate of cpuset.
> > 
> > Unfortunately, even if this patch is applied,
> > I got bad_page problem after hundreds times of page migration
> > (I'll report it in another mail).
> > But I believe something like this patch is needed anyway.
> > 
> 
> I got bad_page after hundreds times of page migration.
> It seems that a locked page is being freed.

I can't reproduce this bad page.
I'll try again tomorrow ;)


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