RE: [PATCH 0/3] HWPOISON: improve memory error handling for multithread process

[Luck, Tony]

> I'm not sure that "[PATCH 3/3] mm/memory-failure.c: support dedicated
> thread to handle SIGBUS(BUS_MCEERR_AO)" is a -stable thing?  That's a
> feature addition more than a bugfix?

No - the old behavior was crazy - someone with a multithreaded process might
well expect that if they call prctl(PF_MCE_EARLY) in just one thread, then that
thread would see the SIGBUS  with si_code = BUS_MCEERR_A0 - even if that
thread wasn't the main thread for the process.

Perhaps the description for the commit should better reflect that?

-Tony



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