From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264946AbUGIPAz (ORCPT ); Fri, 9 Jul 2004 11:00:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264948AbUGIPAz (ORCPT ); Fri, 9 Jul 2004 11:00:55 -0400 Received: from mpc-26.sohonet.co.uk ([193.203.82.251]:28608 "EHLO moving-picture.com") by vger.kernel.org with ESMTP id S264946AbUGIPAx (ORCPT ); Fri, 9 Jul 2004 11:00:53 -0400 Message-ID: <40EEB322.40002@moving-picture.com> Date: Fri, 09 Jul 2004 16:00:50 +0100 From: James Pearson User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040524 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Thomas Moestl CC: linux-kernel@vger.kernel.org Subject: Re: umount() and NFS races in 2.4.26 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Disclaimer: This email and any attachments are confidential, may be legally X-Disclaimer: privileged and intended solely for the use of addressee. If you X-Disclaimer: are not the intended recipient of this message, any disclosure, X-Disclaimer: copying, distribution or any action taken in reliance on it is X-Disclaimer: strictly prohibited and may be unlawful. If you have received X-Disclaimer: this message in error, please notify the sender and delete all X-Disclaimer: copies from your system. X-Disclaimer: X-Disclaimer: Email may be susceptible to data corruption, interception and X-Disclaimer: unauthorised amendment, and we do not accept liability for any X-Disclaimer: such corruption, interception or amendment or the consequences X-Disclaimer: thereof. Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Thomas Moestl: >after deploying an SMP machine at work, we started to experience Oopses >in file-system related code relatively frequently. Investigation >revealed that they were caused by references using junk pointers from >freed super blocks via dangling inodes from unmounted file systems; >Oopses would always be preceded by the warning > VFS: Busy inodes after unmount. Self-destruct in 5 seconds. Have a nice day... >on an unmount (unmount activity is high on this machine due to heavy >use of the automounter). Are you using the latest autofs4 kernel patches? I had a similar problem - see the thread at: http://marc.theaimsgroup.com/?l=linux-nfs&m=108515468003933&w=2 The latest autofs4 patches fixed it for me - available from: http://www.kernel.org/pub/linux/daemons/autofs/v4 James Pearson