From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261304AbVGGLdn (ORCPT ); Thu, 7 Jul 2005 07:33:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261314AbVGGLbd (ORCPT ); Thu, 7 Jul 2005 07:31:33 -0400 Received: from mx2.elte.hu ([157.181.151.9]:14567 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S261304AbVGGL3w (ORCPT ); Thu, 7 Jul 2005 07:29:52 -0400 Date: Thu, 7 Jul 2005 13:29:36 +0200 From: Ingo Molnar To: Alistair John Strachan Cc: linux-kernel@vger.kernel.org Subject: Re: Realtime Preemption, 2.6.12, Beginners Guide? Message-ID: <20050707112936.GA26335@elte.hu> References: <200507061257.36738.s0348365@sms.ed.ac.uk> <20050706204429.GA1159@elte.hu> <200507071046.41938.s0348365@sms.ed.ac.uk> <200507071221.47946.s0348365@sms.ed.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200507071221.47946.s0348365@sms.ed.ac.uk> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Alistair John Strachan wrote: > Unfortunately, since this is called when the kernel crashes, it's > impossible for me to capture any messages prior to this spam, if there > even are any. this is where serial logging (or netconsole/netlogging) may be useful. do you have DEBUG_STACKOVERFLOW and latency tracing still enabled? The combination of those two options is pretty good at detecting stack overflows. Also, you might want to enable CONFIG_4KSTACKS, that too disturbs the stack layout enough so that the error message may make it to the console. Ingo