From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751343AbVK2O3B (ORCPT ); Tue, 29 Nov 2005 09:29:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751357AbVK2O3A (ORCPT ); Tue, 29 Nov 2005 09:29:00 -0500 Received: from ms-smtp-01.nyroc.rr.com ([24.24.2.55]:61951 "EHLO ms-smtp-01.nyroc.rr.com") by vger.kernel.org with ESMTP id S1751343AbVK2O3A (ORCPT ); Tue, 29 Nov 2005 09:29:00 -0500 Subject: Re: [PATCH] race condition in procfs From: Steven Rostedt To: Grzegorz Nosek Cc: vserver@list.linux-vserver.org, linux-kernel@vger.kernel.org, Andrew Morton In-Reply-To: <121a28810511290604m68c56398t@mail.gmail.com> References: <121a28810511282317j47a90f6t@mail.gmail.com> <20051129000916.6306da8b.akpm@osdl.org> <121a28810511290038h37067fecx@mail.gmail.com> <121a28810511290525m1bdf12e0n@mail.gmail.com> <121a28810511290604m68c56398t@mail.gmail.com> Content-Type: text/plain Date: Tue, 29 Nov 2005 09:28:44 -0500 Message-Id: <1133274524.6328.56.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2005-11-29 at 15:04 +0100, Grzegorz Nosek wrote: > 2005/11/29, Grzegorz Nosek : > > > > Oh well, I got another oops in the very same place with the patch > > applied. So now I surrounded the check with > > read_[un]lock(&tasklist_lock) and added a check to do_task_stat (both > > now have a printk). If it builds, boots and doesn't crash, I'll post > > the patch. > > Froze solid a minute after booting :( netconsole didn't log anything > either. Back to the drawing board. Have you seen this crash the vanilla kernel? What exactly are you doing to see the crash? If you have a script or something, could you post it. I could spend some time helping you debug it too on one of my SMP boxes. -- Steve