Messages in this thread | | | Date | Thu, 3 Sep 2020 18:55:30 +0200 | From | Borislav Petkov <> | Subject | Re: [RFD PATCH] x86/mce: Make sure to send SIGBUS even after losing the race to poison a page |
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On Thu, Aug 27, 2020 at 09:32:05AM -0700, Tony Luck wrote: > The #MC used to win that race and the page was taken offline and SIGBUS > sent to the task. > > Changes to how Linux processes machine checks now mean that: > a) Linux will offline the page based on the UCNA siganture in the > CMCI handler.
Let's see if that logic makes sense: if #MC offlines the page and sends SIGBUS but CMCI only offlines the page, isn't it only logical for the CMCI to *also* send the SIGBUS too, after having offlined the page?
I.e., both should do the proper and full recovery action. Just sayin...
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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