Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753511Ab1DQSiH (ORCPT ); Sun, 17 Apr 2011 14:38:07 -0400 Received: from mail-vw0-f46.google.com ([209.85.212.46]:39524 "EHLO mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753231Ab1DQSiB convert rfc822-to-8bit (ORCPT ); Sun, 17 Apr 2011 14:38:01 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type :content-transfer-encoding; b=nxWF5ow+/SF4vw5BrVaZPN2bs1CXc6DhmgXdF3zI87qmrsUvKLZrt67dRpo+5oFPJ6 z/uYiv24ZDvMcgcZj0m4HpcmQH58HucGA44r8inGYD1fPPqUCM1hN5SBvls1Bfjrwnpl afgQPOFJtbUgv0bdFWxGIDiQvRV2SvxIvzMew= MIME-Version: 1.0 In-Reply-To: References: <_H4l51C1wXN.A.yDC.yGuqNB@chimera> From: Bart Van Assche Date: Sun, 17 Apr 2011 20:37:39 +0200 X-Google-Sender-Auth: IIzqO1ju4mtTaWyht4qpTGex1tE Message-ID: Subject: Re: [Bug #32982] Kernel locks up a few minutes after boot To: Linus Torvalds Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Maciej Rutecki , Florian Mickler , Neil Brown , Jens Axboe Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1873 Lines: 45 On Sun, Apr 17, 2011 at 7:03 PM, Linus Torvalds wrote: > On Sun, Apr 17, 2011 at 5:57 AM, Rafael J. Wysocki wrote: > > This message has been generated automatically as a part of a summary report > > of recent regressions. > > > > The following bug entry is on the current list of known regressions > > from 2.6.38. ?Please verify if it still should be listed and let the tracking team > > know (either way). > > > > > > Bug-Entry ? ? ? : http://bugzilla.kernel.org/show_bug.cgi?id=32982 > > Subject ? ? ? ? : Kernel locks up a few minutes after boot > > Submitter ? ? ? : Bart Van Assche > > Date ? ? ? ? ? ?: 2011-04-10 19:55 (8 days old) > > Is this machine running a RAID5 setup or something like that? > > There is a known interaction with the new block layer plugging code > and MD. The "hung task" report in that bugzilla looks very much like > that issue. And you do have "root=/dev/md0", so clearly there's some > md thing going on. > > And bisecting might not work all that well for it, because I suspect > it ends up being very much a matter of IO patterns how it triggers. > > Neil supposedly has a patch for it, but I haven't seen it yet. Neil, Jens? (converted top-posting into bottom-posting) Hello Linus, On the system on which bug #32982 has been triggered md0, md1 and md2 have been configured as two-disk RAID1 (mirroring). I've done my best to trigger enough I/O in order to obtain reliable bisect results. A difficulty I encountered during bisecting though was that I encountered unbootable kernels (all skipped revisions). Bart. -- 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/