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Subject[x86_64] how worried should I be about MCEs?
Every now and then, after rebooting, the kernel notices some MCEs. 
Should I be worried about this?

(mcelog attached)

Thanks,
Andy


MCE 0
CPU 0 0 data cache from boot or resume
ADDR 480b0c84df48
Data cache ECC error (syndrome c8)
bit46 = corrected ecc error
bit57 = processor context corrupt
bit61 = error uncorrected
bit62 = error overflow (multiple errors)
STATUS f66440000000438d MCGSTATUS 0
MCE 1
CPU 0 1 instruction cache from boot or resume
ADDR 75e2bb87ec57f8e0
Instruction cache ECC error
bit32 = err cpu0
bit33 = err cpu1
bit35 = res3
bit43 = res11
bit45 = uncorrected ecc error
bit46 = corrected ecc error
bit55 = res23
bit56 = res24
bit57 = processor context corrupt
bit59 = misc error valid
bit61 = error uncorrected
bit62 = error overflow (multiple errors)
STATUS ffe4681bd0e45d81 MCGSTATUS 0
MCE 2
CPU 0 3 load/store unit from boot or resume
MISC 8005003b8005003b
bit57 = processor context corrupt
bit59 = misc error valid
bit61 = error uncorrected
bit62 = error overflow (multiple errors)
STATUS fa0000000000d0c5 MCGSTATUS 0
MCE 3
CPU 0 4 northbridge from boot or resume
ADDR 102000020
Northbridge ECC error
ECC syndrome = 0
bit32 = err cpu0
bit33 = err cpu1
bit40 = error found by scrub
bit45 = uncorrected ecc error
bit57 = processor context corrupt
bit61 = error uncorrected
STATUS b600215300001e0f MCGSTATUS 0
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