Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030654AbWI0TPN (ORCPT ); Wed, 27 Sep 2006 15:15:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030652AbWI0TPN (ORCPT ); Wed, 27 Sep 2006 15:15:13 -0400 Received: from e34.co.us.ibm.com ([32.97.110.152]:40675 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id S1030654AbWI0TPK (ORCPT ); Wed, 27 Sep 2006 15:15:10 -0400 Subject: Re: 2.6.18 Nasty Lockup From: john stultz To: caglar@pardus.org.tr Cc: Greg Schafer , linux-kernel@vger.kernel.org, Andi Kleen In-Reply-To: <200609271245.39591.caglar@pardus.org.tr> References: <20060926123640.GA7826@tigers.local> <200609270015.51465.caglar@pardus.org.tr> <1159311057.17071.5.camel@localhost> <200609271245.39591.caglar@pardus.org.tr> Content-Type: text/plain; charset=UTF-8 Date: Wed, 27 Sep 2006 12:14:59 -0700 Message-Id: <1159384500.29040.3.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1629 Lines: 36 On Wed, 2006-09-27 at 12:45 +0300, S.Çağlar Onur wrote: > 27 Eyl 2006 Çar 01:50 tarihinde, john stultz şunları yazmıştı: > > On Wed, 2006-09-27 at 00:15 +0300, S.Çağlar Onur wrote: > > > 26 Eyl 2006 Sal 15:36 tarihinde, Greg Schafer şunları yazmıştı: > > > > This is a _hard_ lockup. No oops, no magic sysrq, no nuthin, just a > > > > completely dead machine with only option the reset button. Usually > > > > happens within a couple of minutes of desktop use but is 100% > > > > reproducible. Problem is still there in a fresh checkout of current > > > > Linus git tree (post 2.6.18). > > > > > > Same symptoms here and its reproducible after starting the irqbalance > > > (0.12 or 0.13), if i disable irqbalance then everything is going fine. > > > > Hmm.. Not sure about the connection to irqbalance. You're using the TSC > > clocksource, so I'm curious if your cpu TSC's are out of sync. Can you > > boot w/ "clocksource=acpi_pm" to see if that resolves it? > > Yep, it solves the problem and system boot normally with irqbalance enabled. Ok. Good to hear you have a workaround. Now to sort out why your TSCs are becoming un-synced. From the dmesg you sent me privately, I noticed that while you have 4 cpus, the following message only shows up once: ACPI: Processor [CPU1] (supports 8 throttling states) Does disabling cpufreq change anything? thanks -john - 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/