From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763168AbXGZJLJ (ORCPT ); Thu, 26 Jul 2007 05:11:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759364AbXGZJK5 (ORCPT ); Thu, 26 Jul 2007 05:10:57 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:56056 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759186AbXGZJK4 (ORCPT ); Thu, 26 Jul 2007 05:10:56 -0400 Date: Thu, 26 Jul 2007 11:10:48 +0200 From: Ingo Molnar To: Michal Piotrowski Cc: Andrew Morton , Christoph Lameter , linux-kernel@vger.kernel.org Subject: [bug] SLUB & freeing locks [was: Re: 2.6.23-rc1: known regressions with patches] Message-ID: <20070726091048.GA7366@elte.hu> References: <46A47940.7030801@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46A47940.7030801@googlemail.com> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.0.3 -1.0 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 there's a new regression: SLUB does not seem to call debug_check_no_locks_freed() - hence on SLUB we will not notice certain types of freeing races. (such as freeing an object still locked and used on another CPU.) SLAB does this corretly. Ingo