From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932393AbZICWGh (ORCPT ); Thu, 3 Sep 2009 18:06:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932321AbZICWGg (ORCPT ); Thu, 3 Sep 2009 18:06:36 -0400 Received: from claw.goop.org ([74.207.240.146]:36033 "EHLO claw.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932302AbZICWGf (ORCPT ); Thu, 3 Sep 2009 18:06:35 -0400 Message-ID: <4AA03DE8.40706@goop.org> Date: Thu, 03 Sep 2009 15:06:32 -0700 From: Jeremy Fitzhardinge User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3 MIME-Version: 1.0 To: Bastian Blank , linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com, 544145@bugs.debian.org, Keir Fraser Subject: Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso References: <20090830181637.GA7155@wavehammer.waldi.eu.org> <4AA02C57.30106@goop.org> <20090903220252.GA19309@wavehammer.waldi.eu.org> In-Reply-To: <20090903220252.GA19309@wavehammer.waldi.eu.org> X-Enigmail-Version: 0.97a Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/03/09 15:02, Bastian Blank wrote: > AFAIK only AMD support the syscall instruction, so yes it is an AMD > machine. And yes, disabling the only thing that make the glibc call this > instruction works around it. > The bug actually appears to be in xen_sysret32, ie the crash happens on the way out of the kernel. J