Re: Random Register Contents

Chip Salzenberg (chip@perlsupport.com)
Mon, 2 Nov 1998 00:54:22 -0500

According to Andi Kleen:
> In article <19981031181957.I11587@perlsupport.com>,
> Chip Salzenberg <chip@perlsupport.com> writes:
> > According to John Reiser:
> >> I'm working on a product where it is desirable for a process to have as
> >> much run-to-run repeatability as possible. I've run into problems with
> >> exec() introducing needless randomness via the registers.
>
> > And random register contents are a problem because ... ??
>
> ... because conservative garbage collectors use the registers as root set.

Hm, I suppose this could happen.

> Also in theory it is a covert channel.

Now _this_ I buy. Bug status confirmed, IMO.

-- 
Chip Salzenberg        - a.k.a. -        <chip@perlsupport.com>
      "There -- we made them swerve slightly!"   //MST3K


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