Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946250AbXBPVRg (ORCPT ); Fri, 16 Feb 2007 16:17:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946252AbXBPVRg (ORCPT ); Fri, 16 Feb 2007 16:17:36 -0500 Received: from www.osadl.org ([213.239.205.134]:54963 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1946250AbXBPVRf (ORCPT ); Fri, 16 Feb 2007 16:17:35 -0500 Subject: Re: 2.6.20-git13 kernel BUG at /mnt/md0/devel/linux-git/kernel/time/tick-sched.c:168 From: Thomas Gleixner Reply-To: tglx@linutronix.de To: Michal Piotrowski Cc: Ingo Molnar , LKML In-Reply-To: <45D61632.1020105@googlemail.com> References: <45D61632.1020105@googlemail.com> Content-Type: text/plain Date: Fri, 16 Feb 2007 22:22:19 +0100 Message-Id: <1171660939.30834.102.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 872 Lines: 29 On Fri, 2007-02-16 at 21:38 +0100, Michal Piotrowski wrote: > Hi, > > This looks like a tickless stuff Yup. > 0xc0139ea0 is in tick_nohz_stop_sched_tick (/mnt/md0/devel/linux-git/kernel/time/tick-sched.c:168). > 163 > 164 if (need_resched()) > 165 goto end; > 166 > 167 cpu = smp_processor_id(); > 168 BUG_ON(local_softirq_pending()); Hmm, the BUG_ON is inside of an interrupt disabled region, so we should have bailed out early in the need_resched() check above (because we are in the idle task context according to the stack trace). Is this reproducible ? tglx - 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/