From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263742AbTEYUSa (ORCPT ); Sun, 25 May 2003 16:18:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263743AbTEYUSa (ORCPT ); Sun, 25 May 2003 16:18:30 -0400 Received: from holomorphy.com ([66.224.33.161]:22687 "EHLO holomorphy") by vger.kernel.org with ESMTP id S263742AbTEYUS1 (ORCPT ); Sun, 25 May 2003 16:18:27 -0400 Date: Sun, 25 May 2003 13:31:15 -0700 From: William Lee Irwin III To: Manfred Spraul Cc: Mika Penttil? , Zwane Mwaikambo , Ingo Molnar , Linux Kernel Subject: Re: [RFC][PATCH][2.5] Possible race in wait_task_zombie and finish_task_switch Message-ID: <20030525203115.GB8978@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Manfred Spraul , Mika Penttil? , Zwane Mwaikambo , Ingo Molnar , Linux Kernel References: <3ED0A248.10308@kolumbus.fi> <3ED0A7CF.9040803@colorfullife.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3ED0A7CF.9040803@colorfullife.com> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, May 25, 2003 at 01:23:59PM +0200, Manfred Spraul wrote: > Hmm. What is schedule.c:746? There is no BUG in that area in the bk tree. > Zwane, is it easy to reproduce the crash? I could write a patch that > adds 4 refcounters, then we could find out in which area we must look. There's a check in -mm that reads an otherwise unused chunk of the task_t and checks to see if it's slab poison. -- wli