ExtremeTech: CPU Manufacturers Are Pushing the Boundaries of CMOS and Starting to Pay For It

[Karl]

Summary:

Google is collecting evidence indicating that at least around 3% of modern
cups are silently corrupting data in ways that users don't notice.

>
A pathological cpu core is described that performs AES in some way such
that it can reliably decrypt its own encrypted documents, but no other
discovered cores can do so.

The failures are called "corrupt execution errors" and the invisibly
failing cores "mercurial" .  Blamed on problems of miniaturization.  Chip
manufacturers have not spoken yet.  Google is finding more problems as they
improve their software for detecting them.

Google's paper linked from the article appears to be
https://sigops.org/s/conferences/hotos/2021/papers/hotos21-s01-hochschild.pdf
.  I have not visited the link myself.
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