From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932355AbWAQJCI (ORCPT ); Tue, 17 Jan 2006 04:02:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932360AbWAQJCI (ORCPT ); Tue, 17 Jan 2006 04:02:08 -0500 Received: from uproxy.gmail.com ([66.249.92.198]:25788 "EHLO uproxy.gmail.com") by vger.kernel.org with ESMTP id S932355AbWAQJCG convert rfc822-to-8bit (ORCPT ); Tue, 17 Jan 2006 04:02:06 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=SlNjwhZajnxhIrbaRqYt/Ykk/dNf1I9vBih1PzC9OfyuLLHAN6K/xGDw61CIMXJFVQJ78wR5vtRq/bOVQ2XI5l4FiXaaZT3o/qFjLqaQhkzqTTby57RRt/TL/DCGVa8SU4igsLe7OJ1xdGp1wmPlQM9ycgvSDa22CeGvF7Me9RM= Message-ID: <58cb370e0601170102l491c1a1o7494416c6ae133d@mail.gmail.com> Date: Tue, 17 Jan 2006 10:02:03 +0100 From: Bartlomiej Zolnierkiewicz To: Linux-Kernel mailing list Subject: Re: 2.6.15.1 Oops: rmmod ide-scsi In-Reply-To: <20060116235103.GA9664@merlin.emma.line.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <20060116235103.GA9664@merlin.emma.line.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Matthias, Unfortunately this a known bug since at least 2.6.8 days: http://bugzilla.kernel.org/show_bug.cgi?id=3568 Fixing would probably require adding reference counting on SCSI host. On 1/17/06, Matthias Andree wrote: > Greetings, > > playing with 2.6.15.1 a bit, I found that unloading ide-scsi causes two > reproducible Oopsen here, and then the system locks up a short while > later (with SysRq still functional so I can SysRq+B, but this corrupted > an innocent .pyo file unrelated and even unaccessed during this time...) > > Procedure to reproduce: > > boot with init=/bin/bash added > > rmmod ide-cd # SUSE loads this module from initrd > modprobe ide-scsi > rmmod ide-scsi # <- oopses right after that with Oops #1 > # and a few seconds later with Oops #2 > > Enclosed: (1) the full dmesg and (2) .config (I fed the latter through > egrep to ditch the comments and blank lines and sorted it for easy "is > option XYZ set" retrieval). > > I don't think ide-cd is the culprit here, I can unload and reload it > several times in a row without Oops. > > There be more dragons inside that module, > but that's a different tale > not to be told today. > > Regards, > > -- > Matthias Andree