From: Theodore Tso Subject: Re: data corruption with ext4 (from 2.6.27.4) exposed by rtorrent Date: Wed, 5 Nov 2008 15:42:23 -0500 Message-ID: <20081105204223.GC9266@mit.edu> References: <3d3ce57e0811030442o377cf2bet212eefba79d714bb@mail.gmail.com> <20081103134008.GE29102@mit.edu> <319012f0811030734s6d14b2b3t13c32a41ac48e852@mail.gmail.com> <20081103165144.6514f003@starbug.prg01.itonis.net> <18705.63392.489856.682976@frecb006361.adech.frec.bull.fr> <20081105195713.GB9266@mit.edu> <18705.64906.497902.219660@frecb006361.adech.frec.bull.fr> <18706.44.567787.592343@frecb006361.adech.frec.bull.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Solofo.Ramangalahy@bull.net, Jindrich Makovicka , linux-ext4@vger.kernel.org To: "Aneesh Kumar K.V" Return-path: Received: from www.church-of-our-saviour.org ([69.25.196.31]:60101 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757378AbYKEUm3 (ORCPT ); Wed, 5 Nov 2008 15:42:29 -0500 Content-Disposition: inline In-Reply-To: <18706.44.567787.592343@frecb006361.adech.frec.bull.fr> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Nov 05, 2008 at 09:21:00PM +0100, Solofo.Ramangalahy@bull.net wrote: > Solofo.Ramangalahy@bull.net writes: > > > The next question is whether the problem is more easily triggerred > > > when under memory pressure. > > > > I was currently testing other kernels, but, right, I will retest with more memory. > > with -m 2048 I do not observe the problem. > > I should add that with 2.6.28-rc3 + ext4 patch queue, I am observing > what seems to be lockdep bug: > [ 31.603020] BUG: key c9f315a8 not in .data! Aneesh has some new patches in the ext4 patch queue that add new lockdep annotations. I'm guessing there's a problem there. Aneesh, can you look into this? Solofo, can you send the .config you used in case it was unique to replicating the problem? - Ted