MCA: CPU 0 UNCOR GTLB LG error

[erdos]

Hi all,

I've encountered following error several times during system upgrade,

the screen was filled with errors like:

MCA: Vendor "AuthenticAMD", ID 0xfc0, APIC ID 0
MCA: CPU 0 UNCOR GTLB LG error
MCA: Address 0x3200038
MCA: Bank 4, Status 0xa40000000005001b
MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000

any idea what does this mean?

 

[richardtoohey2]

Google has this: https://github.com/opnsense/core/issues/1244

Not saying it is exactly the same, but it seems to indicate an unexpected instruction.

What is the machine you are running on? What's the CPU?

 

[erdos]

thanks!
I'm running on a homebuilt pc with AMD 64 Cpu.

Looks that this is related to the AMD processor.

 

[Terri_Kennedy]

any idea what does this mean?

An illegal instruction should not cause a machine check to be logged. I would check to make sure your motherboard BIOS is up-to-date and also try the sysutils/devcpu-data port to see if there is newer microcode for your CPU.

The sysutils/mcelog port decodes this machine check as:

Hardware event. This is not a software error.
CPU 0 BANK 4 
ADDR 0 
MCG status:
STATUS a40000000005001b MCGSTATUS 0
MCGCAP 105 APICID 0 SOCKETID 0 
(Fields were incomplete)[/code[