Re: Random Register Contents
Andi Kleen (ak@muc.de)
01 Nov 1998 09:41:52 +0100
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.
Also in theory it is a covert channel.
-Andi
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