Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764774AbYCFNeu (ORCPT ); Thu, 6 Mar 2008 08:34:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934329AbYCFNeR (ORCPT ); Thu, 6 Mar 2008 08:34:17 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:45514 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934324AbYCFNeQ (ORCPT ); Thu, 6 Mar 2008 08:34:16 -0500 Date: Thu, 6 Mar 2008 14:33:47 +0100 From: Ingo Molnar To: Bartlomiej Zolnierkiewicz Cc: Jens Axboe , Linus Torvalds , Linux Kernel Mailing List , "Rafael J. Wysocki" , Anders Eriksson Subject: Re: Linux 2.6.25-rc4 Message-ID: <20080306133347.GA23495@elte.hu> References: <20080306090029.GA6215@elte.hu> <20080306125929.GD17940@kernel.dk> <200803061438.22205.bzolnier@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200803061438.22205.bzolnier@gmail.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1245 Lines: 33 * Bartlomiej Zolnierkiewicz wrote: > The problem looks very similar to the one recently reported by Anders: > > http://lkml.org/lkml/2008/2/22/239 > > "Trying out 2.6.25-rc2 smartd always causes my box to hang. I can > switch vt:s and the keyboard seems to work. > > Using sysrq-e I noticed a callpath open -> ext3 -> journals -> > sync_buffer -> io_scheduel -> generic_unplig_device. I'd guess the > open stems from smartd. Removing smartd from the startup, I'm now > using rc2 fine..." > > Initially we thought that it is an IDE regression but after some > testing and further investigation it seems that IDE changes just made > it more likely to occur (yesterday it turned out that the kernel with > the "guilty" IDE commit sometimes boots fine). The issue is easily > reproducible. > > PS We've already verified that it is not PREEMPT related or a compiler > bug. smartd is not active here though - and starting/restarting it doesnt provoke a hang. Ingo -- 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/