MCE-Ryzen-Decoder

Description

MCE Ryzen Decoder for AMD 17h (23) family.
Developed by Dimitri Fourny.

$ cat /proc/cpuinfo | grep family
cpu family	: 23

Usage

./run.py
USAGE: ./run.py <bank_number> <status_code>

Example

If you get this following error in the journalctl:

Jul 20 16:11:50 archlinux kernel: mce: [Hardware Error]: Machine check events logged
Jul 20 16:11:50 archlinux kernel: mce: [Hardware Error]: CPU 10: Machine Check: 0 Bank 5: bea0000000000108
Jul 20 16:11:50 archlinux kernel: mce: [Hardware Error]: TSC 0 ADDR 1ffff9610d110 MISC d012000101000000 SYND 4d000000 IPID 500b000000000 
Jul 20 16:11:50 archlinux kernel: mce: [Hardware Error]: PROCESSOR 2:800f11 TIME 1532095761 SOCKET 0 APIC c microcode 800111c

The only insteresting values are Bank 5: bea0000000000108. You just need to put these values in the parameters:

$ ./run.sh 5 bea0000000000108
Bank: Execution Unit (EX)
Error: Watchdog Timeout error (WDT 0x0)

How to fix

0xbea0000000000108

Bank: Execution Unit (EX)
Error: Watchdog Timeout error (WDT 0x0)

It's the most known error on a Ryzen. To fix it, you need to disable C-States in the BIOS or to set the boot parameter processor.max_cstate=5.