Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760191AbXJEMMz (ORCPT ); Fri, 5 Oct 2007 08:12:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753491AbXJEMMs (ORCPT ); Fri, 5 Oct 2007 08:12:48 -0400 Received: from embla.aitel.hist.no ([158.38.50.22]:55831 "EHLO embla.aitel.hist.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752011AbXJEMMr (ORCPT ); Fri, 5 Oct 2007 08:12:47 -0400 Message-ID: <47062A03.1000603@aitel.hist.no> Date: Fri, 05 Oct 2007 14:11:47 +0200 From: Helge Hafting User-Agent: Icedove 1.5.0.10 (X11/20070329) MIME-Version: 1.0 To: Andi Kleen CC: Thomas Gleixner , linux-kernel@vger.kernel.org Subject: Re: x86-64 sporadic hang in 2.6.23rc7 and 2.6.22 References: <46F8273B.8030904@aitel.hist.no> <1190669351.4035.254.camel@chaos> <46FE5C98.1030507@aitel.hist.no> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1294 Lines: 34 Andi Kleen wrote: > Helge Hafting writes: > >> shrink_dcache_memory >> > > That usually means random memory corruption from somewhere -- dcache > tends to use a lot of memory and when it is corrupted anywhere these > functions tend to crash while walking the lists. > > Unfortunately memory corruption is hard to track down because > the messenger is usually not the one to blame. > > Perhaps enable slab debugging and see if it turns > something up. Could be also broken hardware. Does an older kernel > run stable? If yes and if it can be reproduced bisecting would > be good. > I attempted bisecting - and failed. The problem is that 2.6.23rc7 seems very unstable, but 2.6.22rc4 is much better but not perfect. 2.6.22rc4 only crashed once - it can compile for hours and swap lots and keep running. But it died at least once. I'll try running recent kernels with more debugging instead. I think I used SLUB instead of SLAB - either way I can switch that over to see if it changes things. Helge Hafting - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/