From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262882AbTJ3Vbg (ORCPT ); Thu, 30 Oct 2003 16:31:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262868AbTJ3Vbg (ORCPT ); Thu, 30 Oct 2003 16:31:36 -0500 Received: from fw.osdl.org ([65.172.181.6]:52910 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262865AbTJ3Vbd (ORCPT ); Thu, 30 Oct 2003 16:31:33 -0500 Date: Thu, 30 Oct 2003 13:33:16 -0800 From: Andrew Morton To: Thomas Schlichter Cc: B.Zolnierkiewicz@elka.pw.edu.pl, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Subject: Re: Processes receive SIGSEGV if TCQ is enabled Message-Id: <20031030133316.6bd00b4a.akpm@osdl.org> In-Reply-To: <200310301601.55588.schlicht@uni-mannheim.de> References: <200310301601.55588.schlicht@uni-mannheim.de> X-Mailer: Sylpheed version 0.9.4 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Thomas Schlichter wrote: > > today I tried to test TCQ with the linux-2.6.0-test9-mm1 kernel. The config.gz > is attached. But after enabling TCQ with 'hdparm -Q1 /dev/hda' newly started > processes die due to a received SIGSEGV. No bad kernel messages appear... Probably we need to turn off TCQ in kernel config until the confidence level is higher. > Disabling TCQ again doesn't help, only e reboot does... That will be because you have incorrect program text in pagecache, left over from when the driver was in TCQ mode.