From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753689Ab2GXJlY (ORCPT ); Tue, 24 Jul 2012 05:41:24 -0400 Received: from mga11.intel.com ([192.55.52.93]:18751 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753661Ab2GXJlU (ORCPT ); Tue, 24 Jul 2012 05:41:20 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="184831501" Date: Tue, 24 Jul 2012 10:58:22 +0100 From: Alan Cox To: Ian Abbott Cc: Alan Cox , Ian Abbott , lkml , Greg KH Subject: Re: Oops after merge of tty-next Message-ID: <20120724105822.22b90e94@bob.linux.org.uk> In-Reply-To: <500D64D7.3060902@mev.co.uk> References: <5009D68A.3050301@mev.co.uk> <20120721234145.354e6ee9@pyramind.ukuu.org.uk> <500D64D7.3060902@mev.co.uk> Organization: Intel X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Organisation: Intel Corporation UK Ltd, registered no. 1134945 (England), Registered office Pipers Way, Swindon, SN3 1RJ Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Sorry for the late reply. I'm using Gentoo Linux built from source > for ~amd64 (unstable). Thanks > The crashes all seem to be while the devfs process is running. One > thing strange I noticed is that I'm using Gentoo's "OpenRC" boot > system, but the crashes only occur when it is configured to start > services in parallel (rc_parallel="YES" in /etc/rc.conf). I've not managed to duplicate this yet but I suspect there is a locking bug in one of the paths where devfs is opening the tty multiple times in parallel. I may have to try building a stress tester for that. Alan