From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751805AbXCGPNT (ORCPT ); Wed, 7 Mar 2007 10:13:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751844AbXCGPNT (ORCPT ); Wed, 7 Mar 2007 10:13:19 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:34303 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751805AbXCGPNS (ORCPT ); Wed, 7 Mar 2007 10:13:18 -0500 Subject: Re: How do I analyze a soft lockup? From: Arjan van de Ven To: Rainer Koenig Cc: linux-kernel@vger.kernel.org In-Reply-To: <87k5xt40ew.fsf@ABG3595C.abg.fsc.net> References: <87k5xt40ew.fsf@ABG3595C.abg.fsc.net> Content-Type: text/plain Organization: Intel International BV Date: Wed, 07 Mar 2007 07:12:20 -0800 Message-Id: <1173280342.3540.7.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-1.fc6) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2007-03-07 at 15:02 +0100, Rainer Koenig wrote: > Hi there, > > Environment: > > Kernel is 2.6.16.27, arch x86_64 on a Dual Core AMD64 machine with > 4 GB of RAM. Also involved is an Areca 1100 SATA RAID controller > with the drives from the Tekram website. > > Problem: > > We get customer reports that a system stops with the following kernel > messages (as they are submitted to us, we're not able yet to reproduce > the problem in our laboratory :-( ) looks like a stack overflow or a random memory scribble to me. Alternatively the stacktrace is entirely garbled, also a possibility. I assume you checked there were no other external modules involved? Also can the user use a much later version of the kernel (which has areca merged and can enable lockdep debugging)?