From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933266AbXCEMVJ (ORCPT ); Mon, 5 Mar 2007 07:21:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933288AbXCEMVJ (ORCPT ); Mon, 5 Mar 2007 07:21:09 -0500 Received: from ug-out-1314.google.com ([66.249.92.174]:35842 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933266AbXCEMVH (ORCPT ); Mon, 5 Mar 2007 07:21:07 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=uV1Qs9zKb+TMQ0H7aiNxhmtfES420DUMZy3ivqDxUlIrVPS9HTYa2i1FXp9YGpzFEIGLHRlCgbdiPd/sSl4JBMeE8dXo0lxSpZ4wJaQlYMlFvkq510TGBCEdxWVUvdOejEFeSOkVeRlDemmKbXGZ0HzRFmWCfeDfWN33uGEQyY0= Message-ID: <6bffcb0e0703050421l32fa68e8u3791731e4305f5b9@mail.gmail.com> Date: Mon, 5 Mar 2007 13:21:05 +0100 From: "Michal Piotrowski" To: "Ingo Molnar" Subject: Re: 2.6.21-rc2-git3 soft lockup detected on CPU#0 (crash dump kernel) Cc: "Thomas Gleixner" , LKML In-Reply-To: <6bffcb0e0703050404h5be8d8d4i8e77e90a25150894@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1173022668.24738.141.camel@localhost.localdomain> <6bffcb0e0703040847g1c04940bm4c22895ec2540bd1@mail.gmail.com> <1173027823.24738.156.camel@localhost.localdomain> <6bffcb0e0703040915h442b4d6cq8bb47cd961165916@mail.gmail.com> <20070305080824.GA20583@elte.hu> <1173090869.24738.198.camel@localhost.localdomain> <20070305103141.GA18404@elte.hu> <6bffcb0e0703050347j5169c672g19996d5c76707123@mail.gmail.com> <20070305115111.GA10675@elte.hu> <6bffcb0e0703050404h5be8d8d4i8e77e90a25150894@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 05/03/07, Michal Piotrowski wrote: > On 05/03/07, Ingo Molnar wrote: > > > > * Michal Piotrowski wrote: > > > > > >also below is a softlockup-debug patch that might be useful, which adds > > > >a tick/tock output so it spams the console once per second but can show > > > >the dynamics of lockups (and other delays). > > > > > > I have applied this patch > > > http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc2-git3-kdump/log3.txt > > > > thanks. It seems that the 'BUG: soft lockup detected' message does not > > occur in this log though - and that there are bootup messages between > > the two sysrq outputs: > > > > [ 221.101833] skge eth1: disabling interface > > [ 228.740911] audit(1173094442.943:11): user pid=3245 uid=0 > > auid=4294967295 subj=system_u:system_r:hwclock_t:s0 msg='changing system > > time: exe="/sbin/hwclock" > > (hostname=?, addr=?, terminal=console res=success)' > > [ 233.148571] md: md1 in immediate safe mode > > > > plus there's trouble with irq 10: > > > > [ 132.013194] irq 10: nobody cared (try booting with the "irqpoll" option) > > [ 132.072771] Disabling IRQ #10 > > > > that prompted you to enable irqpoll, right? > > No. irqpoll is added by /etc/init.d/kdump script (FC6). > > > So am i right that without > > irqpoll there's no lockup? > > I will check this. I can confirm that without irqpoll everything works fine. http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc2-git3-kdump/log4.txt irqpoll is recommended as a command line option in Documentation/kdump/kdump.txt Regards, Michal -- Michal K. K. Piotrowski LTG - Linux Testers Group (PL) (http://www.stardust.webpages.pl/ltg/) LTG - Linux Testers Group (EN) (http://www.stardust.webpages.pl/linux_testers_group_en/)