Re: Break 2.4 VM in five easy steps

Derek Glidden
2001-06-07T15:50:13Z

Miles Lane wrote:
>
> So please, if you have new facts that you want to offer that
> will help us characterize and understand these VM issues better
> or discover new problems, feel free to share them. But if you
> just want to rant, I, for one, would rather you didn't.

*sigh*

Not to prolong an already pointless thread, but that really was the
intent of my original message. I had figured out a specific way, with
easy-to-follow steps, to make the VM misbehave under very certain
conditions. I even offered to help figure out a solution in any way I
could, considering I'm not familiar with kernel code.

However, I guess this whole "too much swap" issue has a lot of people on
edge and immediately assumed I was talking about this subject, without
actually reading my original message.

--
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#!/usr/bin/perl -w
$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map
{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;
$t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)
[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join
"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval

usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \
| extract_mpeg2 | mpeg2dec -

http://www.eff.org/ http://www.opendvd.org/