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Date: Fri, 8 Dec 2000 11:36:20 -0800 (PST)
From: "Dr. Kelsey Hudson" <kernel@blackhole.compendium-tech.com>
To: Peter Samuelson <peter@cadcamlab.org>
cc: "Richard B. Johnson" <root@chaos.analogic.com>,
        Rainer Mager <rmager@vgkk.com>, linux-kernel@vger.kernel.org
Subject: Re: Signal 11
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On Thu, 7 Dec 2000, Peter Samuelson wrote:

> 
> [Dick Johnson]
> > Do:
> > 
> > char main[]={0xff,0xff,0xff,0xff};
> 
> Oh come on, at least pick an *interesting* invalid opcode:
> 
>   char main[]={0xf0,0x0f,0xc0,0xc8};	/* try also on NT (: */

What's funny, is that this actually executes on SPARC hardware, but
immediately segfaults. On Intel hardware though, you get a message similar
to:

zsh: illegal hardware instruction (core dumped)  a.out

I wrote relatively the same program in college. It exploits the F0 0F bug
found in early Pentium hardware.

 Kelsey Hudson                                           khudson@ctica.com 
 Software Engineer
 Compendium Technologies, Inc                               (619) 725-0771
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