From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935276AbXGZSMV (ORCPT ); Thu, 26 Jul 2007 14:12:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761173AbXGZSMN (ORCPT ); Thu, 26 Jul 2007 14:12:13 -0400 Received: from terminus.zytor.com ([198.137.202.10]:49883 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760643AbXGZSML (ORCPT ); Thu, 26 Jul 2007 14:12:11 -0400 Message-ID: <46A8E3F9.5070809@zytor.com> Date: Thu, 26 Jul 2007 11:12:09 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.0 (X11/20070419) MIME-Version: 1.0 To: bbpetkov@yahoo.de CC: Xudong Guan , linux-kernel@vger.kernel.org Subject: Re: 2.6.23-rc1: no setup signature found... References: <20070724112618.GA4431@gollum.tnic> <20070726150854.GA7034@xguan-laptop> <46A8BB6C.6050903@zytor.com> <20070726163053.GA4570@gollum.tnic> In-Reply-To: <20070726163053.GA4570@gollum.tnic> X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Borislav Petkov wrote: > >> What distro/version of grub are you running? > Debian unstable >> I'm wondering if there are >> some old version of grub out there which did the "load four sectors" >> way-anciently-obsolete crap; the other possibility that comes to mind is >> setting up the stack in an invalid manner. > grub version: > > [boris@gollum:18:17:27:-> apt-cache show grub > Package: grub > Priority: optional > Section: admin > Installed-Size: 708 > Maintainer: Grub Maintainers > Architecture: i386 > Version: 0.97-29 > Depends: libc6 (>= 2.5-5), libncurses5 (>= 5.4-5) > Suggests: grub-doc, mdadm > Filename: pool/main/g/grub/grub_0.97-29_i386.deb > Size: 366884 > MD5sum: 2da7a5942db06eaba046dff4615bcce9 > SHA1: 7f4da793da209d011ce94fceebaebe0e5f08790f > SHA256: 2596782c08f1f7365e9935f687fef74c67d8702503188f22448db9f0ac98e18e > Description: GRand Unified Bootloader > ... This concerns me deeply. This is a current version of Grub which shouldn't have any silly 8K limitations. Yet it appears to have a similar pathology over the ancient version Xudong just described. The absolute best would be if we could replicate this in simulation (Bochs or Qemu); this would make it very simple to debug. Would you be willing to try to do that? -hpa