From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932081AbWGGJ3U (ORCPT ); Fri, 7 Jul 2006 05:29:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932085AbWGGJ3U (ORCPT ); Fri, 7 Jul 2006 05:29:20 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:53444 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S932081AbWGGJ3T (ORCPT ); Fri, 7 Jul 2006 05:29:19 -0400 Subject: Re: linux-2.6.17-mm6: strange kobject message From: Arjan van de Ven To: Andrew Morton Cc: Paul Drynoff , linux-kernel@vger.kernel.org In-Reply-To: <20060707022420.6f58b58c.akpm@osdl.org> References: <20060707125942.fe3d467b.pauldrynoff@gmail.com> <20060707022420.6f58b58c.akpm@osdl.org> Content-Type: text/plain Date: Fri, 07 Jul 2006 11:29:12 +0200 Message-Id: <1152264552.3111.35.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2006-07-07 at 02:24 -0700, Andrew Morton wrote: > hm. > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17/2.6.17-mm6/broken-out/lockdep-annotate-8390c-disable_irq.patch > didn't work. -mm6 only had part 1; you also have part 2 now which should fix this one > We've seen this reported a couple of times before. It could be a race in > the tty layer where a newly-added vc has the same index as a going-away > one which still has its sysfs file. Or it could be something else :( that'd be a bug in the tty layer; the VC shouldn't be allowed to go away until the sysfs file is gone (basic sysfs refcounting rules), and any person keeping such a file open can delay that. Now I can believe the tty layer having, ehm, suboptimal refcounting/locking; I believe Alan is still trying to get it sane....