Thanks Mario and Masum for working this through.
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https://bugs.launchpad.net/bugs/2047374
Title:
TPM PCR0 recontruction fails on Pluton fTPM
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The way this works is that the tpm event log is used to attempt to
reconstruct pcr0. If it doesn't match the value in the tpm pcr0 then
there is a bug or malware.
The same report was brought into fwupd upstream.
Various artifacts were captured and the conclusion is this is a BIOS bug.
It should
Thanks for the report, Masum.
I'm not sure if this is actually a bug against fwupd or just that fwupd
is the tool that reported the change.
And it's entirely possible that this is the correct outcome. If the TPM
device changes on a system, it's suddenly a very different system.
Hopefully
