From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932939AbZIDQUB (ORCPT ); Fri, 4 Sep 2009 12:20:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932771AbZIDQUA (ORCPT ); Fri, 4 Sep 2009 12:20:00 -0400 Received: from wavehammer.waldi.eu.org ([82.139.201.20]:52863 "EHLO wavehammer.waldi.eu.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932335AbZIDQT7 (ORCPT ); Fri, 4 Sep 2009 12:19:59 -0400 Date: Fri, 4 Sep 2009 18:20:04 +0200 From: Bastian Blank To: Jeremy Fitzhardinge Cc: 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 Message-ID: <20090904162003.GA6147@wavehammer.waldi.eu.org> Mail-Followup-To: Bastian Blank , Jeremy Fitzhardinge , linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com, 544145@bugs.debian.org, Keir Fraser References: <20090830181637.GA7155@wavehammer.waldi.eu.org> <4AA02C57.30106@goop.org> <20090903220252.GA19309@wavehammer.waldi.eu.org> <4AA03DE8.40706@goop.org> <20090903223603.GA19945@wavehammer.waldi.eu.org> <4AA13B4B.7020101@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4AA13B4B.7020101@goop.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 04, 2009 at 09:07:39AM -0700, Jeremy Fitzhardinge wrote: > But for some reason that's triggering a failsafe callback, which invokes > a GP. Hmm, not in my tests. It always returned to userspace correctly and died some operations later, usually the "ret". This then produced either a segfault (unreadable address), sigill (if it managed to reach the ELF header of the ld.so) or a GPF. Bastian -- You! What PLANET is this! -- McCoy, "The City on the Edge of Forever", stardate 3134.0