From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753727AbZBQErD (ORCPT ); Mon, 16 Feb 2009 23:47:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751169AbZBQEqx (ORCPT ); Mon, 16 Feb 2009 23:46:53 -0500 Received: from Mycroft.westnet.com ([216.187.52.7]:34263 "EHLO Mycroft.westnet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751047AbZBQEqw (ORCPT ); Mon, 16 Feb 2009 23:46:52 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18842.16695.145336.851447@stoffel.org> Date: Mon, 16 Feb 2009 23:46:47 -0500 From: "John Stoffel" To: Philippe Grenard Cc: linux-kernel@vger.kernel.org, "John Stoffel" Subject: Re: PROBLEM: cannot get stable system since 2.6.28 kernel (amd64) In-Reply-To: <200902161925.40256.philippe.grenard@laposte.net> References: <200902131944.56634.philippe.grenard@laposte.net> <200902151317.11690.philippe.grenard@laposte.net> <18840.45474.829954.528820@stoffel.org> <200902161925.40256.philippe.grenard@laposte.net> X-Mailer: VM 8.0.9 under Emacs 22.2.1 (i486-pc-linux-gnu) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Philippe" == Philippe Grenard writes: Philippe> well, I don't really believe in hardware problem for two Philippe> reasons : 1st, nearly all my hardware is quite new ( < 1 Philippe> year old ), which is, I agree, not a solid proof ;-) 2nd, Philippe> the problem is really repetitive : every time I boot on Philippe> older kernel, everything works like a charm, every time I Philippe> boot on the newer kernel, I end up crashing : the "random" Philippe> part is only the time before crash.... Philippe> I haven't any "overclocking" settings, and every hardware Philippe> and bios settings are the same : same computer, same Philippe> harddisk partition, and so on. 2.6.28 will everytime stop Philippe> after "Booting the kernel". 2.6.29-rc* will boot, but then Philippe> stalls after a random delay... Except the "/proc/cpuinfo" Philippe> difference between the two kernels, I don't have a clue.... Philippe> The thing is I can continue using the old kernel, but I Philippe> thought I better report this since It could hide some Philippe> regression on amd64 systems ? It's certainly sounding like a regression, or misconfiguration somewhere. Can you start doing a 'git bisect' routine on this to see if you can find the commit which causes this regression? It will take around 10 or some recompiles and reboots, but should do the trick, or at least help narrow things down alot. Read Documentation/BUG-HUNTING ofr how to do a bisect run. You could also go back and re-build your 2.6.28 kernel and config from scratch to confirm that it's really working properly. Then, jump to 2.6.29-rc5 (just released) and do a 'make oldconfig' and see what you're prompted for. If it still crashes, send us the original config, and a diff to the new config (diff -u) so we can look it over. Also, make sure you're not running *any* binary kernel modules, since that will make us completely ignore you. We can't debug issues like this when nVidia graphics modules are in the system since we can't tell what that module does to the rest of the kernel and it's not worth ou time to figure out. I'm running 2.6.29-rc3 on my AMD64 system and it's been nice and stable and my hardware too is under a year old. John