From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758683Ab3DDJdJ (ORCPT ); Thu, 4 Apr 2013 05:33:09 -0400 Received: from mail.skyhub.de ([78.46.96.112]:54729 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758563Ab3DDJdG (ORCPT ); Thu, 4 Apr 2013 05:33:06 -0400 Date: Thu, 4 Apr 2013 11:33:02 +0200 From: Borislav Petkov To: Jiri Slaby Cc: "Rafael J. Wysocki" , Bjorn Helgaas , x86@kernel.org, lkml , Konstantin Khlebnikov Subject: Re: Uhhuh. NMI received for unknown reason 2c on CPU 0. Message-ID: <20130404093302.GB32271@pd.tnic> Mail-Followup-To: Borislav Petkov , Jiri Slaby , "Rafael J. Wysocki" , Bjorn Helgaas , x86@kernel.org, lkml , Konstantin Khlebnikov References: <20130129202848.GE25415@pd.tnic> <5109A8F1.9040707@suse.cz> <5109B11C.2010400@suse.cz> <5170962.qHnbnlVDfx@vostro.rjw.lan> <20130131070926.GC4926@pd.tnic> <510A2B1C.1060108@suse.cz> <20130131131805.GG4926@pd.tnic> <20130131132400.GH4926@pd.tnic> <5130A55E.8030508@suse.cz> <515D2C79.7040904@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <515D2C79.7040904@suse.cz> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 04, 2013 at 09:32:09AM +0200, Jiri Slaby wrote: > And yesterday I plugged in an ethernet cable for a wihle and guess > what happened today: Uhhuh. NMI received for unknown reason 2c on CPU > 0. > > Still holds that this is the first time since Jan. Yeah, you could try my sure-fire way to trigger it: * boot the box without any "nmi_watchdog" tweaks on the kernel cmdline - i.e. it should be enabled. * turn off NMI watchdog through powertop or directly through /proc/sys/kernel/nmi_watchdog * suspend to disk Now when you resume, you should either see unknown reason 2c or 3c. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --