Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751504AbWE3Nwa (ORCPT ); Tue, 30 May 2006 09:52:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751506AbWE3Nwa (ORCPT ); Tue, 30 May 2006 09:52:30 -0400 Received: from mx1.redhat.com ([66.187.233.31]:12480 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S1751504AbWE3Nw3 (ORCPT ); Tue, 30 May 2006 09:52:29 -0400 Date: Tue, 30 May 2006 09:52:24 -0400 From: Dave Jones To: Jens Axboe Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: .17rc5 cfq slab corruption. Message-ID: <20060530135224.GA3179@redhat.com> Mail-Followup-To: Dave Jones , Jens Axboe , Andrew Morton , linux-kernel@vger.kernel.org References: <20060526213915.GB7585@redhat.com> <20060526170013.67391a2b.akpm@osdl.org> <20060527070724.GB24988@suse.de> <20060527133122.GB3086@redhat.com> <20060530131728.GX4199@suse.de> <20060530134450.GF14721@redhat.com> <20060530135059.GA4199@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060530135059.GA4199@suse.de> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1304 Lines: 31 On Tue, May 30, 2006 at 03:50:59PM +0200, Jens Axboe wrote: > > > > > Pretty baffling... cfq has been hammered pretty thoroughly over the > > > > > last months and _nothing_ has shown up except some performance anomalies > > > > > that are now fixed. Since daves case (at least) seems to be > > > > > use-after-free, I'll see if I can reproduce with some contrived case. > > > > > I'm asuming that picasa forks and exits a lot with submitted io in > > > > > between than may not have finished at exit. > > > > > > > > The second time I hit it, was actually during boot up. > > > > > > Dave, do you have any io scheduler switching going on? > > > > Nope, everything set to use CFQ as default, and left that way. > > Hrmpf ok, I had hoped perhaps something in your init scripts modified > the scheduler value. grep doesn't show anything in init scripts, and ttbomk, hald isn't messing with this. (Actually I'm seeing it trigger before that gets started anyway, so that can't be it). Dave -- http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/