From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [103.22.144.67]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id F20631A01AF for ; Fri, 1 Aug 2014 11:53:37 +1000 (EST) Message-ID: <1406858017.32701.1.camel@concordia> Subject: Re: scheduler crash on Power From: Michael Ellerman To: Sukadev Bhattiprolu 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" Mime-Version: 1.0 Cc: bruno@wolff.to, peterz@infrdead.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, jwboyer@redhat.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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