6.6.1 - Machine check events logged

Upgraded to 6.6.1 at end of Sept and no issues. Looking at my logs today I see that a few days ago there is:

Oct  9 16:37:30 husky kernel: mce: [Hardware Error]: Machine check events logged
Oct  9 16:37:30 husky kernel: mce: [Hardware Error]: CPU 1: Machine Check: 0 Bank 0: 9000004000010005
Oct  9 16:37:30 husky kernel: mce: [Hardware Error]: TSC b2dad2eb3ea6f 
Oct  9 16:37:30 husky kernel: mce: [Hardware Error]: PROCESSOR 0:306a9 TIME 1539121050 SOCKET 0 APIC 2 microcode 20

Which I've never seen before and did not appear to be service impacting.

I'm not able to dig into this as mce events are not written to standard logging.. (should unraid come with mcelog?)

husky-diagnostics-20181012-0935.zip