Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753459AbZAFHMh (ORCPT ); Tue, 6 Jan 2009 02:12:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751565AbZAFHM3 (ORCPT ); Tue, 6 Jan 2009 02:12:29 -0500 Received: from E23SMTP06.au.ibm.com ([202.81.18.175]:33399 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751519AbZAFHM2 (ORCPT ); Tue, 6 Jan 2009 02:12:28 -0500 Date: Tue, 6 Jan 2009 12:40:18 +0530 From: Vaidyanathan Srinivasan To: Ingo Molnar Cc: Peter Zijlstra , Linux Kernel , Balbir Singh , Andrew Morton , Mike Galbraith Subject: Re: [BUG] 2.6.28-git LOCKDEP: Possible recursive rq->lock Message-ID: <20090106071018.GC4574@dirshya.in.ibm.com> Reply-To: svaidy@linux.vnet.ibm.com References: <20090104174450.GB4301@dirshya.in.ibm.com> <1231092523.29980.4.camel@twins> <20090105040635.GF4301@dirshya.in.ibm.com> <20090105130638.GB6014@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20090105130638.GB6014@elte.hu> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1522 Lines: 46 * Ingo Molnar [2009-01-05 14:06:38]: > > * Vaidyanathan Srinivasan wrote: > > > * Peter Zijlstra [2009-01-04 19:08:43]: > > > > > On Sun, 2009-01-04 at 23:14 +0530, Vaidyanathan Srinivasan wrote: > > > > Hi Ingo, > > > > > > > > Kernbench runs on latest Linux git tree stalled with the following > > > > lockdep warning. > > > > > > > > Lockdep warning and lockup on Jan 3 Linus git tree > > > > commit 7d3b56ba37a95f1f370f50258ed3954c304c524b > > > > > > > > kernbench run with two threads stalled. sched_mc was zero. > > > > x86_64 system with 8 logical CPUs in dual socket quad core > > > > configuration. > > > > > > > > I will post more information as I debug this warning/bug. > > > > > > Its ca109491f612aab5c8152207631c0444f63da97f, I've some ideas on how to > > > fix this, just haven't gotten around to actually doing anything -- > > > seeing how it was holidays and such.. > > > > Hi Peter, > > > > I can definitely test your fix when you have them. I have an > > autotest job that hits this bug. > > could you check latest tip/master, it has Peter's and Thomas's hrtimer > fixes. Hi Ingo, I have started a test run with the today's sched-tip. I will report results. --Vaidy -- 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/