linux-kernel - Re: 2.6.23-rc1: no setup signature found... SOLVED!

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <46B2174F.2070705@zytor.com>
Date:	Thu, 02 Aug 2007 13:41:35 -0400
From:	"H. Peter Anvin" <hpa@...or.com>
To:	bbpetkov@...oo.de
CC:	Xudong Guan <xudong.guan@...il.com>, linux-kernel@...r.kernel.org,
	Chuck Ebbert <cebbert@...hat.com>,
	michal.k.k.piotrowski@...il.com
Subject: Re: 2.6.23-rc1: no setup signature found... SOLVED!

Borislav Petkov wrote:
> 
> Hi,
> 
> now this is one of those cases where one tries to shoot a small fly with a
> nuclear missile. The first assumption that something was wrong with the kernel
> setup code was wrong and here's how i know:
> 
> The problem with my version of grub not hitting the breakpoint 0x90200 made me
> think that something might be messed up in the grub part of the boot sequence.
> Thus, i did the qemu simulation again and noticed on the initial boot screen of
> grub it saying "Grub version 0.91." However, you remember from a different post
> that the version of grub i have is the latest to be found in debian unstable,
> 0.97-29, so i thought that something has to be wrong with it and especially with all
> those grub stages binaries, in my case in /boot/grub, which grub-install setups.
> Checking their timestamps revealed that the files are from 2004 so i thought,
> well, these are OLD! :) After refreshing the grub installation and replacing
> the stages-binaries with the fresh ones, the kernel booted just fine :), here:
> 
> [boris@...lum:07:02:07:~:9994)->  uname -a
> Linux gollum 2.6.22-4fd06960f120e02e9abc802a09f9511c400042a5-12 #12 PREEMPT Thu Jul 26 18:08:34 CEST 2007 i686 GNU/Linux
> 
> so i guess the problem was with the ancient parts of a grub installation i had
> lying around which weren't replaced by the apt-get update process and somehow
> messed up newer grub versions. Anyway, in the end one still learns a lot while at it.
> 
> Thanks for your help.
> 

Very cool.  I actually suspected that, but I wanted to explore all 
avenues.  I'm glad this can be written off.

	-hpa
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/