From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759244AbYBMIa0 (ORCPT ); Wed, 13 Feb 2008 03:30:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756546AbYBMIaQ (ORCPT ); Wed, 13 Feb 2008 03:30:16 -0500 Received: from www.tglx.de ([62.245.132.106]:51698 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755446AbYBMIaP (ORCPT ); Wed, 13 Feb 2008 03:30:15 -0500 Date: Wed, 13 Feb 2008 09:21:28 +0100 (CET) From: Thomas Gleixner To: Andrew Morton cc: Frans Pop , linux-kernel@vger.kernel.org, john stultz Subject: Re: [stable 2.6.24] WARNING: at kernel/time/clockevents.c In-Reply-To: <20080212230741.576b8004.akpm@linux-foundation.org> Message-ID: References: <200802101440.22118.elendil@planet.nl> <20080212230741.576b8004.akpm@linux-foundation.org> User-Agent: Alpine 1.00 (LFD 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 12 Feb 2008, Andrew Morton wrote: > On Sun, 10 Feb 2008 14:40:21 +0100 Frans Pop wrote: > the hrtimer code is preparing an invalid ktime_t. Note that > clockevents_program_event() actually fails when this happens - I am > surprised that this is not causing observeable userspace problems. > > The WARN_ON_ONCE() means that you'll only see this warning once per boot. > But the actually error could be happening any number of times without being > reported. > > Looks pretty serious? Yes. It's the same problem, which got fixed with: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=62f0f61e6673e67151a7c8c0f9a09c7ea43fe2b5 Frans, Thanks for reporting ! I'm working on a fix. Thanks, tglx