From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752365Ab1LFS7G (ORCPT ); Tue, 6 Dec 2011 13:59:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:64218 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751999Ab1LFS7D (ORCPT ); Tue, 6 Dec 2011 13:59:03 -0500 Message-ID: <1323197914.11696.30.camel@constitution.bos.jonmasters.org> Subject: Re: [PATCH] ARM: futex: fix clobbering oldval From: Jon Masters To: Will Deacon Cc: mhban , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , DavidHowells , Thomas Gleixner , Michel Lespinasse , Russell King , Chris Metcalf Date: Tue, 06 Dec 2011 13:58:34 -0500 In-Reply-To: <20110922172653.GH13572@e102144-lin.cambridge.arm.com> References: <1316660015.6872.1.camel@puffmine-laptop> <20110922172653.GH13572@e102144-lin.cambridge.arm.com> Organization: Red Hat, Inc. Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2011-09-22 at 18:26 +0100, Will Deacon wrote: > Hi, > > On Thu, Sep 22, 2011 at 03:53:35AM +0100, mhban wrote: > > This patch fixes clobbering oldval bug. oldval should be preserved for next > > compare operation. > > > > Change-Id: I2a63bc1bdb8de330eb9e1ac02d7da1f77e6e8c3c > > Signed-off-by: Minho Ban > > It would have been nice to have been CC'd on this... > > I ran LTP tests on this, so I'm surprised that this was broken (the tests > passed). Well spotted anyway! This appears to be the cause of our "stuck builder" problem in Fedora building certain large packages, such as OpenJDK. Some of our guys are still monitoring the situation in case there's a secondary issue. Was there ever any additional followup on this topic? Jon.