Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761095AbXFFJqZ (ORCPT ); Wed, 6 Jun 2007 05:46:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756160AbXFFJqS (ORCPT ); Wed, 6 Jun 2007 05:46:18 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:32987 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751610AbXFFJqR (ORCPT ); Wed, 6 Jun 2007 05:46:17 -0400 Date: Wed, 6 Jun 2007 11:45:48 +0200 From: Ingo Molnar To: john stultz Cc: Thomas Gleixner , Steven Rostedt , "Paul E. McKenney" , lkml Subject: Re: [PATCH -rt] Fix TASKLET_STATE_SCHED WARN_ON() Message-ID: <20070606094548.GA9511@elte.hu> References: <1181096244.6018.20.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1181096244.6018.20.camel@localhost> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean 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=3.1.7 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 606 Lines: 17 * john stultz wrote: > This fix avoids this race by making sure *after* we've locked the > tasklet that the STATE_SCHED bit is set before adding it to the list. > > Does it look ok to you? ah - nice!! What would be the worst-case effect of this bug? (besides the WARN_ON()?) In any case, this fix will be in -rt10. Great work! 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/