From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755778Ab2BADSf (ORCPT ); Tue, 31 Jan 2012 22:18:35 -0500 Received: from mail-qy0-f174.google.com ([209.85.216.174]:34181 "EHLO mail-qy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752579Ab2BADSe convert rfc822-to-8bit (ORCPT ); Tue, 31 Jan 2012 22:18:34 -0500 MIME-Version: 1.0 In-Reply-To: <4F286529.1060407@gmail.com> References: <4F286529.1060407@gmail.com> Date: Wed, 1 Feb 2012 11:18:34 +0800 X-Google-Sender-Auth: 53wULCZlYJqlsOSqGxYj2wuPqLs Message-ID: Subject: Re: cfq bug still not fixed on x86 From: Shaohua Li To: walt Cc: linux-kernel@vger.kernel.org, Jens Axboe , Tejun Heo Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org can you try the debug patch from Tejun: http://marc.info/?l=linux-kernel&m=132683711206544&w=2 2012/2/1 walt : > Hi guys.  Linus recently commited this bugfix from Jens: > > commit 54b466e44b1c7809144bbd8cd6be3f85877ca46f > Author: Jens Axboe > Date:   Tue Jan 17 21:26:11 2012 +0100 > >    cfq-iosched: fix use-after-free of cfqq > > That fixed the problem on my amd64x2 machine, but my old UP x86 amd > machine is still producing the same backtrace when udevd segfaults > during bootup. > > I'm wondering if the patch neglects some 32-bit or non-SMP code? > > Thanks for all your hard work on open-source :) > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at  http://vger.kernel.org/majordomo-info.html > Please read the FAQ at  http://www.tux.org/lkml/