Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755049AbXJAOr4 (ORCPT ); Mon, 1 Oct 2007 10:47:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751904AbXJAOrs (ORCPT ); Mon, 1 Oct 2007 10:47:48 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:43963 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751806AbXJAOrs (ORCPT ); Mon, 1 Oct 2007 10:47:48 -0400 Date: Mon, 1 Oct 2007 16:47:33 +0200 From: Ingo Molnar To: Andi Kleen Cc: Sami Farin , Linux kernel Mailing List Subject: Re: 2.6.22.6 + oprofile oops Message-ID: <20071001144733.GA5975@elte.hu> References: <20070922112335.4wqatiewgeiottty@m.safari.iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.1 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.1 required=5.9 tests=BAYES_05 autolearn=no SpamAssassin version=3.1.7-deb -1.1 BAYES_05 BODY: Bayesian spam probability is 1 to 5% [score: 0.0264] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 846 Lines: 24 * Andi Kleen wrote: > > 2007-09-22 13:53:32.527330808 <4>[ 3372.390363] Pid: 7, comm: > > events/0 Not tainted 2.6.22.6-cfs-v20.5-64-2 #7 ^^^^^^^^^^^ > > Can you reproduce it with a non tainted kernel without any patches > like CFS applied? the kernel is not tainted, as indicated in the log message above. > The oops happens because oprofile tries to reference a NULL task in > its event buffer for a context switch, which might well be a minor > merging mistake or similar in the CFS backport. CFS does not change that aspect of the oprofile code. Ingo - 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/