From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754147Ab1AJO1b (ORCPT ); Mon, 10 Jan 2011 09:27:31 -0500 Received: from mx1.redhat.com ([209.132.183.28]:16082 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752994Ab1AJO13 (ORCPT ); Mon, 10 Jan 2011 09:27:29 -0500 Date: Mon, 10 Jan 2011 15:19:59 +0100 From: Oleg Nesterov To: Stefan Priebe - Profihost AG Cc: Kay Sievers , Dhaval Giani , Greg Kroah-Hartman , linux-kernel@vger.kernel.org Subject: Re: [BUG stable, 2.6.32.27] sched: delayed cleanup of user_struct Message-ID: <20110110141959.GA312@redhat.com> References: <4D2AB8F7.7030506@profihost.ag> <20110110114913.GA22298@redhat.com> <20110110123630.GA27057@redhat.com> <4D2AFFB5.5000807@profihost.ag> <20110110133545.GA30163@redhat.com> <4D2B113A.2060303@profihost.ag> <20110110140817.GA31708@redhat.com> <4D2B1658.20201@profihost.ag> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4D2B1658.20201@profihost.ag> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/10, Stefan Priebe - Profihost AG wrote: > >>> You can find the logs here: >>> http://pastebin.com/hNd15E8K >> >> Good. Sadly, I didn't see this trace before... >> >> kernel BUG at kernel/workqueue.c:287! >> >> this matches "INIT_DELAYED_WORK() can corrupt the pending work" I >> mentioned. > Sorry to ask this but this could also be "workarounded" by disabled > GROUP_SCHED? Or is this another thing? Yes, this looks like the same thing. But let me repeat, today I looked at this code for the first time ;) > Will wait if greg or anybody else can tell > us something about it. Indeed. Oleg.