From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753320AbaHABxk (ORCPT ); Thu, 31 Jul 2014 21:53:40 -0400 Received: from ozlabs.org ([103.22.144.67]:44312 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752673AbaHABxj (ORCPT ); Thu, 31 Jul 2014 21:53:39 -0400 Message-ID: <1406858017.32701.1.camel@concordia> Subject: Re: scheduler crash on Power From: Michael Ellerman To: Sukadev Bhattiprolu Cc: peterz@infrdead.org, bruno@wolff.to, jwboyer@redhat.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Date: Fri, 01 Aug 2014 11:53:37 +1000 In-Reply-To: <20140730072242.GA21516@us.ibm.com> References: <20140730072242.GA21516@us.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2014-07-30 at 00:22 -0700, Sukadev Bhattiprolu wrote: > I am getting this crash on a Powerpc system using 3.16.0-rc7 kernel plus > some patches related to perf (24x7 counters) that Cody Schafer posted here: > > https://lkml.org/lkml/2014/5/27/768 > > I don't get the crash on an unpatched kernel though. You mean you don't get the crash on 3.16-rc7 ? I find it hard to believe those 24x7 patches are causing this. > I am also attaching the debug messages that Peterz added > here: https://lkml.org/lkml/2014/7/17/288 I don't see any FAIL messages in your log, so it looks like you're not hitting the case that patch was looking for? > Appreciate any debug suggestions. Reproduce on an unpatched kernel. cheers