From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755118Ab0KRIF1 (ORCPT ); Thu, 18 Nov 2010 03:05:27 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:40180 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751331Ab0KRIF0 (ORCPT ); Thu, 18 Nov 2010 03:05:26 -0500 Date: Thu, 18 Nov 2010 09:05:16 +0100 From: Ingo Molnar To: Jason Wessel Cc: Don Zickus , Peter Zijlstra , Robert Richter , ying.huang@intel.com, Andi Kleen , LKML , Frederic Weisbecker Subject: Re: [V2 PATCH 0/6] x86, NMI: give NMI handler a face-lift Message-ID: <20101118080516.GJ32621@elte.hu> References: <1289573033-2889-1-git-send-email-dzickus@redhat.com> <4CDD579F.80009@windriver.com> <20101112154231.GN4823@redhat.com> <4CDD6389.2080206@windriver.com> <20101112161144.GP4823@redhat.com> <4CDD6CAD.30303@windriver.com> <20101112172755.GR4823@redhat.com> <20101116184325.GB4823@redhat.com> <4CE2E3C3.6060800@windriver.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4CE2E3C3.6060800@windriver.com> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Jason Wessel wrote: > On 11/16/2010 12:43 PM, Don Zickus wrote: > > On Fri, Nov 12, 2010 at 12:27:55PM -0500, Don Zickus wrote: > > > > Hi Jason, > > > > > >>> I tested 2.6.35 and it does not hard hang, but suffered from a different > >>> problem with a perf API change. The kgdb tests appear to loop and loop > >>> emitting endless streams of output in 2.6.35 and I already have that > >>> problem patched. > >>> > > > > I keep getting the following stack trace which is different than your > > hang. Is this looping I am seeing something with the NMI or kgdb? > > > > > > That was also a regression due to changes in the perf API for which I > have a patch pending. > > I can send you the patch which Frederic has already tested OR you can > turn off CONFIG_DEBUG_RODATA in the kernel config, which is the source > of that particular problem. Would be nice to know that Don's series does not introduce a regression for kgdb before i can apply the patches. Thanks, Ingo