Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757681AbaGWJbg (ORCPT ); Wed, 23 Jul 2014 05:31:36 -0400 Received: from darkcity.gna.ch ([195.226.6.51]:49953 "EHLO mail.gna.ch" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751347AbaGWJbe (ORCPT ); Wed, 23 Jul 2014 05:31:34 -0400 Message-ID: <53CF80EE.5050702@daenzer.net> Date: Wed, 23 Jul 2014 18:31:26 +0900 From: =?windows-1252?Q?Michel_D=E4nzer?= User-Agent: Mozilla/5.0 (X11; Linux ppc; rv:31.0) Gecko/20100101 Icedove/31.0 MIME-Version: 1.0 To: Peter Zijlstra CC: Linus Torvalds , Ingo Molnar , Linux Kernel Mailing List Subject: Re: Random panic in load_balance() with 3.16-rc References: <53C77BB8.6030804@daenzer.net> <20140717075820.GE19379@twins.programming.kicks-ass.net> <53C8E90F.1010306@daenzer.net> <53CE00EF.70108@daenzer.net> <53CF31AE.30403@daenzer.net> <20140723064948.GK3935@laptop> <53CF6CC4.6090207@daenzer.net> <20140723082819.GR3935@laptop> <20140723092536.GO12054@laptop.lan> In-Reply-To: <20140723092536.GO12054@laptop.lan> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 23.07.2014 18:25, Peter Zijlstra wrote: > On Wed, Jul 23, 2014 at 10:28:19AM +0200, Peter Zijlstra wrote: > >> Of course, the other thing that patch did is clear sgp->power (now >> sgc->capacity). > > Hmm, re-reading the thread there isn't a clear confirmation its this > patch at all. Could you perhaps bisect this to either verify it is > indeed that patch we're talking about: > > caffcdd8d27b ("sched: Do not zero sg->cpumask and sg->sgp->power in build_sched_groups()") > > or find which patch is causing this. It can take a long time for the problem to occur, so I need to run at least for one or two days to be at least somewhat sure a given kernel is not affected. I'll try reproducing the problem with your previous suggestions first, but if I manage to do that, I guess there's no alternative to bisecting... -- Earthling Michel D?nzer | http://www.amd.com Libre software enthusiast | Mesa and X developer -- 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/