From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756140Ab3EVOXD (ORCPT ); Wed, 22 May 2013 10:23:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58478 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754483Ab3EVOXA (ORCPT ); Wed, 22 May 2013 10:23:00 -0400 Date: Wed, 22 May 2013 10:22:52 -0400 From: Dave Jones To: Dave Chinner Cc: Linux Kernel , xfs@oss.sgi.com Subject: Re: XFS assertion from truncate. (3.10-rc2) Message-ID: <20130522142252.GB1407@redhat.com> Mail-Followup-To: Dave Jones , Dave Chinner , Linux Kernel , xfs@oss.sgi.com References: <20130521234016.GB14347@redhat.com> <20130521235410.GY29466@dastard> <20130522000803.GA19891@redhat.com> <20130522001603.GZ29466@dastard> <20130522025605.GA29767@redhat.com> <20130522040318.GG29466@dastard> <20130522041521.GA1837@redhat.com> <20130522051243.GH29466@dastard> <20130522052938.GA2573@redhat.com> <20130522055147.GI29466@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130522055147.GI29466@dastard> 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 Wed, May 22, 2013 at 03:51:47PM +1000, Dave Chinner wrote: > > Tomorrow I'll also try running some older kernels with the same > > options to see if it's something new, or an older bug. This is a > > new machine, so it may be something that's been around for a > > while, and for whatever reason, my other machines don't hit > > this. > > Another thing that just occurred to me - what compiler are you > using? We had a report last week on #xfs that xfsdump was failing > with bad checksums because of link time optimisation (LTO) in > gcc-4.8.0. When they turned that off, everything worked fine. So if > you are using 4.8.0, perhaps trying a different compiler might be a > good idea, too. Yeah, this is 4.8.0. This box is running F19-beta. I managed to shoehorn the gcc-4.7 from f18 on there though. Bug reproduced instantly, so I think we can rule out compiler. I ran 3.9 with the same debug options. Seems stable. I'll do a bisect. Dave