Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757975AbYF3Mhh (ORCPT ); Mon, 30 Jun 2008 08:37:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754071AbYF3Mh2 (ORCPT ); Mon, 30 Jun 2008 08:37:28 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.123]:36657 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753146AbYF3Mh1 (ORCPT ); Mon, 30 Jun 2008 08:37:27 -0400 Date: Mon, 30 Jun 2008 08:37:25 -0400 (EDT) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: Sven-Thorsten Dietrich cc: Noah Watkins , LKML , RT , Ingo Molnar , Thomas Gleixner , paulmck Subject: Re: [BUG RT] 2.6.25.8-rt7 on 8-way In-Reply-To: <1214778205.13292.6.camel@dd.thebigcorporation.com> Message-ID: References: <7618ba960806291432l20b7b6b5lea4b60bafa68c3bf@mail.gmail.com> <1214778205.13292.6.camel@dd.thebigcorporation.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 834 Lines: 28 On Sun, 29 Jun 2008, Sven-Thorsten Dietrich wrote: > > On Sun, 2008-06-29 at 16:32 -0500, Noah Watkins wrote: > > My kernel is very, very noisy with the following bug: > > > > - Full dmesg below > > - Please CC me > > > > I found this as well (adding Paul). > > If you disable CONFIG_PREEMPT_RCU_BOOST, does it go away? > Turning off CONFIG_RCU_TRACE will also make it go away. The bug is that the tracing of the RCU boost code uses smp_processor_id while the RCU boost code is not in an atomic section. Paul has a fix for this already, and will be out in the next releases. -- Steve -- 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/