From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965315Ab3E2JPj (ORCPT ); Wed, 29 May 2013 05:15:39 -0400 Received: from cantor2.suse.de ([195.135.220.15]:45975 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965201Ab3E2JPh (ORCPT ); Wed, 29 May 2013 05:15:37 -0400 Date: Wed, 29 May 2013 10:15:30 +0100 From: Mel Gorman To: Dave Hansen Cc: LKML , Linux-MM , Andrew Morton , Johannes Weiner , Shaohua Li , Anton Vorontsov , Minchan Kim Subject: Re: mmotm-2013-05-22: Bad page state Message-ID: <20130529091530.GA29426@suse.de> References: <51A526D9.3020803@sr71.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <51A526D9.3020803@sr71.net> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 28, 2013 at 02:51:21PM -0700, Dave Hansen wrote: > I was rebasing my mapping->radix_tree lock batching patches on top of > Mel's stuff. It looks like something is jumping the gun and freeing a > page before it has been written out. Somebody probably did an extra > put_page() or something. > > I'm running 3.10.0-rc2-mm1-00322-g8d4c612 from > > git://git.cmpxchg.org/linux-mmotm.git > > This is pretty reproducible. I'll go try and test plain 3.10-rc2 next > to make sure it's not coming from Linus's stuff. > Patch 1 from the follow-up series "mm: vmscan: Block kswapd if it is encountering pages under writeback -fix" The rest of that follow-up series needs further work and I'm still working on it but patch 1 is what fixes this particular problem. Changelog says why. -- Mel Gorman SUSE Labs