Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756560Ab1CAPLK (ORCPT ); Tue, 1 Mar 2011 10:11:10 -0500 Received: from hosting.visp.net.lb ([194.146.153.11]:48475 "EHLO hosting.visp.net.lb" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753063Ab1CAPLI (ORCPT ); Tue, 1 Mar 2011 10:11:08 -0500 X-Greylist: delayed 472 seconds by postgrey-1.27 at vger.kernel.org; Tue, 01 Mar 2011 10:11:08 EST MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Tue, 01 Mar 2011 17:03:08 +0200 From: denys@visp.net.lb To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , , Subject: NMI received for unknown reason, 2.6.38-rc6 =?UTF-8?Q?regression=3F?= Message-ID: <950d04b27ce43565cdef24e4072d7e71@visp.net.lb> User-Agent: VISP Webmail/0.5-beta Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1528 Lines: 33 I upgrade around 140 hosts (from 2.6.33 till 2.6.37), and got on many of them error/warining, flooding kernel log. Here is short snapshot: [ 1882.057474] Uhhuh. NMI received for unknown reason 3c on CPU 0. [ 1882.057576] Do you have a strange power saving mode enabled? [ 1882.057672] Dazed and confused, but trying to continue [ 2421.419732] Uhhuh. NMI received for unknown reason 3c on CPU 0. [ 2421.419835] Do you have a strange power saving mode enabled? [ 2421.419930] Dazed and confused, but trying to continue [ 2636.016831] Uhhuh. NMI received for unknown reason 2c on CPU 1. [ 2636.016934] Do you have a strange power saving mode enabled? [ 2636.017003] Dazed and confused, but trying to continue Full dmesg from 2 machines: http://www.nuclearcat.com/dmesg1.txt http://www.nuclearcat.com/dmesg2.txt I can provide more, if required. It seems nmi_watchdog is enabled by default, and it is causing issue. I am checking now with nmi_watchdog=0, but i need more time to confirm that. Also i am experiencing some problem with ppp users(all of them is pppoe servers), but i am not sure it is related to that, so maybe this NMI warning is just cosmetic regression. All systems is x86, same kernel config. If you need more information - let me know. -- 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/