From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755881AbZBKMx7 (ORCPT ); Wed, 11 Feb 2009 07:53:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755186AbZBKMxt (ORCPT ); Wed, 11 Feb 2009 07:53:49 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:45544 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755061AbZBKMxs (ORCPT ); Wed, 11 Feb 2009 07:53:48 -0500 Date: Wed, 11 Feb 2009 13:53:40 +0100 From: Ingo Molnar To: Peter Zijlstra Cc: Mike Galbraith , Oleg Nesterov , LKML , Thomas Gleixner Subject: Re: x86-tip.today: flood of WARNING: at include/linux/sched.h:2238 run_posix_cpu_timers+0xea/0x79f() Message-ID: <20090211125340.GK16535@elte.hu> References: <1233910614.23431.18.camel@marge.simson.net> <20090206140134.GC3415@elte.hu> <1234280251.23438.73.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1234280251.23438.73.camel@twins> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Peter Zijlstra wrote: > On Fri, 2009-02-06 at 15:01 +0100, Ingo Molnar wrote: > > * Mike Galbraith wrote: > > > > > Greetings, > > > > > > Futzing with kerneltop this morning, I fired up amarok to give it > > > something light to monitor while I hunt missing events. Something bad > > > happened, and when I finally (SysRq-E took minutes) got control of box > > > back, dmesg was full of a steady stream of the below. > > > > > > That warning can be kinda unfriendly. > > > > > > > > > [ 9964.600004] ------------[ cut here ]------------ > > > [ 9964.600006] WARNING: at include/linux/sched.h:2238 run_posix_cpu_timers+0xea/0x79f() > > > > ah, that's Peter's stuff: > > > > 4cd4c1b: timers: split process wide cpu clocks/timers > > 32bd671: signal: re-add dead task accumulation stats. > > > > The discussion with Oleg resulted in the conclusion i > > think that the warning is spurious and should be removed. > > > > I've commited the minimal fix below to tip:master. There's > > more fixes needed too but this should solve the warning > > flood at least. > > I think this is the 'minimal' paranoia version. applied to tip:timers/urgent, thanks Peter! Ingo