Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966557AbXEVTDw (ORCPT ); Tue, 22 May 2007 15:03:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758624AbXEVTDp (ORCPT ); Tue, 22 May 2007 15:03:45 -0400 Received: from nz-out-0506.google.com ([64.233.162.231]:4191 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757071AbXEVTDo (ORCPT ); Tue, 22 May 2007 15:03:44 -0400 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=CEpdRm9aeSv4egHtnQBRgfAfw+w0oGnkIMzTNmM5R9mezIbtrFH7eGVtuZovKcCRKyRlxI/qJ5BtHKgTfGYWPvE90L2b7jiXmsJnNHO1mckFhG0agjGa9iWDvb+JmeM06/oK7qRR4IQNYs4rmJsDTU8uK6w3Fy2ouCzJuJ/ITys= Message-ID: <6bffcb0e0705221203s1ba21ed3j641e91036859db7d@mail.gmail.com> Date: Tue, 22 May 2007 21:03:43 +0200 From: "Michal Piotrowski" To: "Thomas Gleixner" Subject: Re: [BUG] local_softirq_pending storm Cc: "Anant Nitya" , linux-kernel@vger.kernel.org, "Ingo Molnar" In-Reply-To: <1179697388.6570.26.camel@chaos> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200705091942.22920.kernel@prachanda.hub> <200705191525.28400.kernel@prachanda.hub> <1179601868.12981.127.camel@chaos> <200705200253.44992.kernel@prachanda.hub> <1179697388.6570.26.camel@chaos> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2171 Lines: 71 Hi Thomas, On 20/05/07, Thomas Gleixner wrote: > On Sun, 2007-05-20 at 02:53 +0530, Anant Nitya wrote: > > > 1 == TASK_INTERRUPTIBLE, so we know that ksoftirqd was not woken up. At > > > least it is not a scheduler problem. > > > > > > I work out a more complex debug patch and pester you to test once I'm > > > done. > > No problem :) > > You asked for it :) > > Please patch 2.6.22-rc2 with > > http://tglx.de/projects/hrtimers/2.6.22-rc2/patch-2.6.22-rc2-hrt2.patch > and > http://www.tglx.de/private/tglx/ht-debug/tracer.diff > > Compile it with the config > > http://www.tglx.de/private/tglx/ht-debug/config.debug > > You should find something like: > > ( swapper-0 |#0): new 67173 us user-latency. > > along with the familiar "NOHZ ......" message in your log file. > > Once that happened please do: > > $ cat /proc/latency_trace >trace.txt > > compress it and send it to me along with the full dmesg output or put > both up to some place, where I can download it. > > Michal, > > IIRC you encountered the same P4/HT related wreckage. Can you do the > same ? Good news - I can't reproduce this bug. It's time to remove "Subject : 2.6.21-git4 BUG: soft lockup detected on CPU#1! References : http://lkml.org/lkml/2007/5/2/511 Submitter : Michal Piotrowski Handled-By : Thomas Gleixner Status : problem is being debugged" from KR. Bad news - I hit a bug in 2.6.22-rc2-hrt3. Bug symptoms: - X hangs (keyboard, mouse, sound etc.) - only Magic SysRq works http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.22-rc2-hrt3/hrt-config http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.22-rc2-hrt3/hrt-console.log Now I'm trying to apply hrtimers debug patch ontop 2.6.22-rc2-hrt3 http://lkml.org/lkml/2007/3/23/106 Regards, Michal -- Michal K. K. Piotrowski Kernel Monkeys (http://kernel.wikidot.com/start) - 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/