From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753359Ab0JTOmJ (ORCPT ); Wed, 20 Oct 2010 10:42:09 -0400 Received: from mailout-de.gmx.net ([213.165.64.23]:49560 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1752296Ab0JTOmH (ORCPT ); Wed, 20 Oct 2010 10:42:07 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1+pCGRqywepDHFC6COtxlSxtQ89NUJQc/QG5dfOzm NE9BD4GY+aAu7K Subject: Re: [RFC/RFT PATCH] sched: automated per tty task groups From: Mike Galbraith To: Markus Trippelsdorf Cc: linux-kernel@vger.kernel.org In-Reply-To: References: <1287479765.9920.9.camel@marge.simson.net> Content-Type: text/plain Date: Wed, 20 Oct 2010 16:41:53 +0200 Message-Id: <1287585713.18165.3.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 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 Wed, 2010-10-20 at 15:55 +0200, Markus Trippelsdorf wrote: > Mike Galbraith wrote: > > > Comments, suggestions etc highly welcome. > > I've tested your patch and it runs smoothly on my machine. > However I had several NULL pointer dereference BUGs that happened when I > left X or rebooted my system. I think this is caused by your patch. > There is nothing in the logs unfortunately, but I scribbled down the > following by hand (not the whole trace, I'm too lazy): > > BUG: unable to handle NULL pointer dereference at 0..038 > IP: pick_next_task_fair 0xa7/0x1a0 > ... > Call Trace: schedule > ... Hm. Not much I can do without the trace, but thanks for testing and reporting anyway, guess I need to do some heavy stress testing. I'm re-writing it as I write this anyway. thanks, -Mike