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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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