RE: [PATCH v3 0/3] mm,hwpoison: fix sending SIGBUS for Action Required MCE

[Luck, Tony]

>> I updated the series based on previous feedbacks/discussions.
>
> Tested-by: Tony Luck <tony.luck@xxxxxxxxx>

Maybe this series should get a "Cc: stable" tag too?

I don't have a specific commit to provide for Fixes:, but it deals
with an issue where sometimes processes return from the machine
check handler and hit the same machine check again.

It's hard[1] to hit in v5.8, but somehow gets progressively easier in
newer versions.

-Tony

[1] Initially I thought it didn't happen at all in v5.8. Then wasted a bunch
of time trying to bisect. But my "git bisect good" responses turned out to
be randomly assigned when I just hadn't tried enough times to make the
problem show up.