From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764527AbXGRTJP (ORCPT ); Wed, 18 Jul 2007 15:09:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756443AbXGRTJA (ORCPT ); Wed, 18 Jul 2007 15:09:00 -0400 Received: from mail.windriver.com ([147.11.1.11]:45431 "EHLO mail.wrs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752808AbXGRTI7 (ORCPT ); Wed, 18 Jul 2007 15:08:59 -0400 Date: Wed, 18 Jul 2007 12:08:06 -0700 (PDT) From: Jeremy Katz X-X-Sender: jkatz@localhost.localdomain To: Oleg Nesterov cc: Thomas Gleixner , linux-kernel@vger.kernel.org, Andrew Morton , Ingo Molnar , Stable Team Subject: Re: [PATCH] posix-timer: fix deletion race In-Reply-To: <20070718161156.GA761@tv-sign.ru> Message-ID: References: <1184662429.12353.426.camel@chaos> <1184703427.12353.476.camel@chaos> <20070718161156.GA761@tv-sign.ru> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-OriginalArrivalTime: 18 Jul 2007 19:08:06.0564 (UTC) FILETIME=[F911FE40:01C7C96E] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 18 Jul 2007, Oleg Nesterov wrote: > Jeremy, I agree with Thomas that your patch should not be right, but it > does make a difference. Perhaps this is just the timing, but who knows. > Could you add some printk's to be sure that lock_timer() actually fails > while it never should? Agreed. Unfortunately, adding any significant output appears to alter the situation to the point where the issue either does not occur, or takes significantly longer to surface. Jeremy