From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262129AbTJYGYO (ORCPT ); Sat, 25 Oct 2003 02:24:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262133AbTJYGYO (ORCPT ); Sat, 25 Oct 2003 02:24:14 -0400 Received: from e34.co.us.ibm.com ([32.97.110.132]:37606 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id S262129AbTJYGYN (ORCPT ); Sat, 25 Oct 2003 02:24:13 -0400 Date: Fri, 24 Oct 2003 23:27:59 -0700 From: Mike Anderson To: Fredrik Tolf Cc: Patrick Mansfield , linux-kernel@vger.kernel.org Subject: Re: Elevator bug in concert with usb-storage Message-ID: <20031025062759.GB1288@beaverton.ibm.com> Mail-Followup-To: Fredrik Tolf , Patrick Mansfield , linux-kernel@vger.kernel.org References: <16279.15393.575929.983297@pc7.dolda2000.com> <20031023082726.A20073@beaverton.ibm.com> <16280.9893.292564.320412@pc7.dolda2000.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <16280.9893.292564.320412@pc7.dolda2000.com> X-Operating-System: Linux 2.0.32 on an i486 User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Fredrik Tolf [fredrik@dolda2000.com] wrote: > Sorry, that didn't work well. It doesn't crash on the same thing > anymore, but nonetheless crashes. In addition, when I have removed the > device but not yet umounted the filesystem, I tried to ls its root > dir. Before, nothing extraordinary happened then, but now there's a > couple of oopses for the ls process as well. > > .. snip .. > > Call Trace: > [] elv_queue_empty+0x1d/0x20 > [] __make_request+0x80/0x4ae > [] generic_make_request+0x134/0x186 I tried to reproduce this error last night using the scsi_debug driver, but could not. I tried different combinations of file systems (fat, ext2, ext3). I did notice that I had elevator=deadline on the cmdline. I removed this in case the elevator_queue_empty_fn between the two elevators made a difference. I still was unable to reproduce. I will try a few more combinations of things this weekend and let you know what I find out. There might be a race still with our cleanups and I am not able to reproduce it exactly on my system. -andmike -- Michael Anderson andmike@us.ibm.com