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Message-ID: <20200120111729.7fe9d09b@yaydoe>
Date: Mon, 20 Jan 2020 11:17:29 +0100
From: Peter Kjellström <cap@....liu.se>
To: Jeffrey Walton <noloader@...il.com>
Cc: oss-security@...ts.openwall.com
Subject: Re: Some AMD cpus with RDRAND fail to produce random
numbers after suspend/resume
On Thu, 16 Jan 2020 23:21:52 -0500
Jeffrey Walton <noloader@...il.com> wrote:
> This just made my radar. It appears some AMD cpus with RDRAND fail to
> produce random numbers after a suspend/resume. It looks like it was
> first reported in 2014 or so.
Note that there are, afaict, two distict AMD RDRAND issues discussed
here. The original 2014 suspend/resume one and the more recent, "ryzen
3000 just returnx 0xffffffff". The latter is probably the reason for
the renewed focus on this...
/Peter
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