From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264363AbTFPVoZ (ORCPT ); Mon, 16 Jun 2003 17:44:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264372AbTFPVoY (ORCPT ); Mon, 16 Jun 2003 17:44:24 -0400 Received: from 153.Red-213-4-13.pooles.rima-tde.net ([213.4.13.153]:12299 "EHLO small.felipe-alfaro.com") by vger.kernel.org with ESMTP id S264363AbTFPVoX (ORCPT ); Mon, 16 Jun 2003 17:44:23 -0400 Subject: Re: Can't unmount NFS - System freezes From: Felipe Alfaro Solana To: Florian Huber Cc: LKML In-Reply-To: <20030616224504.0132cc1b.florian.huber@mnet-online.de> References: <20030616224504.0132cc1b.florian.huber@mnet-online.de> Content-Type: text/plain Message-Id: <1055800694.586.6.camel@teapot.felipe-alfaro.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.0 Date: 16 Jun 2003 23:58:15 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2003-06-16 at 22:45, Florian Huber wrote: > if I try to unmount a NFS-mounted directory my system freezes. > There is neither a error message nor a log entry. > > I can't type anymore, but the NUM-Lock LED can still be switched > on/off. The host is also not ping-able. > > I also tried different mount options (nfsvers=3, nfsvers=2, default or > even my former 2.4.x settings). > > The NFS server is a 2.4.20 machine exporting with rw,async. > The client is using 2.5.71 (same with 2.5.70-mm9). > > I'm sorry that I can't give you a more detailed description of the > problem. Perhaps you can give me some hints how to debug this. Can you try to reproduce this from the console? I've seen this behavior on previous versions of the kernel, and also the related kernel panic on the console. It would be interesting if you could gather the OOPS message and attach it in a message. I would also suggest trying the following patch if you can: http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.71/2.5.71-mm1/broken-out/rpc-depopulate-fix.patch Or else, the latest 2.5.71-bk snapshot to see if it's fixed. At least, I've been unable to reproduce previous NFS crashes on 2.5.71-mm1.