From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753999Ab1ATTR7 (ORCPT ); Thu, 20 Jan 2011 14:17:59 -0500 Received: from mailout-de.gmx.net ([213.165.64.23]:51705 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753238Ab1ATTR6 (ORCPT ); Thu, 20 Jan 2011 14:17:58 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX19zVFoJk3BzWKrcy8oCst0gA3u6vFsJ8nctH1dRX7 ojtdBffXuuB+4Z Subject: Re: [BUG] 2.6.38-rc1-git1: hard lockup related to i915 / automated cgroup scheduling From: Mike Galbraith To: Linus Torvalds Cc: Knut Petersen , airlied@linux.ie, jesse.barnes@intel.com, linux-kernel@vger.kernel.org, intel-gfx , Peter Zijlstra , Ingo Molnar In-Reply-To: References: <4D387109.9020207@t-online.de> Content-Type: text/plain; charset="UTF-8" Date: Thu, 20 Jan 2011 20:17:53 +0100 Message-ID: <1295551073.8055.22.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.30.1.2 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2011-01-20 at 09:58 -0800, Linus Torvalds wrote: > On Thu, Jan 20, 2011 at 9:29 AM, Knut Petersen > wrote: > > Kernel 2.6.38-rc1 and -git1 will lock my AOpen i915GMm-HFS > > at the end of KDE startup if automatic process group scheduling > > is actived in kernel config. A hard reset is necessary. > > Without automatic process group scheduling everything is ok. > > Interesting. Most likely timing-related, but maybe there's some actual > memory corruption. Adding the scheduler guys just in case. I have a laptop with intel hw, will try it as soon as I can, but that won't be tomorrow for sure, weekend at the earliest. Knut: please send me your .config offline. -Mike