Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760322AbYAJQik (ORCPT ); Thu, 10 Jan 2008 11:38:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759953AbYAJQiK (ORCPT ); Thu, 10 Jan 2008 11:38:10 -0500 Received: from mail001.aei.ca ([206.123.6.130]:56938 "EHLO mail001.aei.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759913AbYAJQiI (ORCPT ); Thu, 10 Jan 2008 11:38:08 -0500 From: Ed Tomlinson To: Ingo Molnar Subject: Re: Fwd: Fwd: laptop / computer hardlocks during execution of 32bit applications(binaries) on 64bit system (Gentoo) Date: Thu, 10 Jan 2008 11:38:01 -0500 User-Agent: KMail/1.9.7 Cc: Matthew , "H. Peter Anvin" , linux-kernel@vger.kernel.org, Thomas Gleixner References: <200801100808.42945.edt@aei.ca> <20080110133252.GB5886@elte.hu> In-Reply-To: <20080110133252.GB5886@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset="ansi_x3.4-1968" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801101138.01387.edt@aei.ca> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1477 Lines: 40 On January 10, 2008, Ingo Molnar wrote: > > * Ed Tomlinson wrote: > > > Matthew is not alone with this problem. I have it too. Its not new > > here. Its been happening as long as I have had gentoo amd64 > > installed. It can be hard to reproduce but eventually, when 32 bit > > apps are used, my box bricks. There is nothing in the logs (nor on a > > serial console) - the box just freezes. > > > > My kernel is _not_ tainted. [...] > > ok, good. A series of questions: > > - can you reproduce it from the VGA console? No - though I do have a serial console to see logs. > - if yes, does booting with "nmi_watchdog=2 idle=poll" give you a > working NMI watchdog? (working NMI watchdog means the NMI counts > increase for all cores in /proc/interrupts). booting with the above gives me an incrementing NMI counter in /proc/interrupts > if still 'yes', then try to reproduce the hard hang on the VGA text > console - do you perhaps get an NMI backtrace printed within 1-2 minutes > after the hard hang happens? If yes then take a photo of that or write > it down. I am booted with the NMI watchdog and serial consoles active running apps that eventually will trigger a hang... Ed Tomlinson -- 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/