Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751493AbWE3MmI (ORCPT ); Tue, 30 May 2006 08:42:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751490AbWE3MmI (ORCPT ); Tue, 30 May 2006 08:42:08 -0400 Received: from mail.gmx.net ([213.165.64.20]:57290 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1751493AbWE3MmG (ORCPT ); Tue, 30 May 2006 08:42:06 -0400 X-Authenticated: #14349625 Subject: Re: [patch, -rc5-mm1] lock validator: disable NMI watchdog if CONFIG_LOCKDEP, i386 From: Mike Galbraith To: Ingo Molnar Cc: Andrew Morton , linux-kernel@vger.kernel.org In-Reply-To: <20060530122950.GA10216@elte.hu> References: <20060530022925.8a67b613.akpm@osdl.org> <20060530111138.GA5078@elte.hu> <1148990326.7599.4.camel@homer> <1148990725.8610.1.camel@homer> <20060530120641.GA8263@elte.hu> <1148991422.8610.8.camel@homer> <20060530121952.GA9625@elte.hu> <1148992098.8700.2.camel@homer> <20060530122950.GA10216@elte.hu> Content-Type: text/plain Date: Tue, 30 May 2006 14:44:24 +0200 Message-Id: <1148993064.7743.1.camel@homer> Mime-Version: 1.0 X-Mailer: Evolution 2.4.0 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 760 Lines: 21 On Tue, 2006-05-30 at 14:29 +0200, Ingo Molnar wrote: > * Mike Galbraith wrote: > > > > > BUG: warning at kernel/lockdep.c:2398/check_flags() > > > > > > this one could be related to NMI. We are already disabling NMI on > > > x86_64, but i thought i had it fixed up for i386 - apparently not. > > > > Booted with nmi_watchdog=0, no warning and no deadlock. > > ok, great. The patch below turns off NMI on i386 automatically. All is well. Back to nmi_watchdog=1, no warning, no lock. -Mike - 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/