Overnight my Fix Common Problems plugin reported Machine Check Events started logging. Everything was perfectly fine yesterday. I'm not sure where or how to read the diagnostics to know what the issue is. I don't see anything standing out in the system log.

unraid-diagnostics-20251001-0910.zip

What's the MCE log say?

I can't locate a mce log. I don't have the Nerdpack installed either. Based on the general information that the Fix Common Problems sent me to, it sounded like I only needed the Nerdpack from version 6.10 or older.

When I look through the attached diags, specifically looking at the syslog files, I am not seeing anything other than a random MCE Hardware error logged, but nothing about what it logged.

Sep 30 05:23:28 unRAID kernel: mce: [Hardware Error]: Machine check events logged

That's all I see. Many single MCE entries. Usually following a docker warning about an updated image being available or before a message about my disks spinning down.

Edited October 1, 2025Oct 1 by UncleStu

nothing in /var/log/mcelog ?

OH! I just assumed that it would have been collected in the Diagnostics.

root@unRAID:/var/log# cat mcelog
mcelog: failed to prefill DIMM database from DMI data
Kernel does not support page offline interface
Hardware event. This is not a software error.
MCE 0
CPU 28 BANK 1 TSC 1decad135796b0 
MISC 80 ADDR 9369f8680 
TIME 1759235008 Tue Sep 30 05:23:28 2025
MCG status:
MCi status:
Corrected error
MCi_MISC register valid
MCi_ADDR register valid
Threshold based error status: green
MCA: corrected filtering (some unreported errors in same region)
Generic CACHE Level-3 Generic Error
STATUS 8c2000409e4b110a MCGSTATUS 0
MCGCAP c16 APICID 58 SOCKETID 0 
MICROCODE 12f
CPUID Vendor Intel Family 6 Model 183 Step 1
Hardware event. This is not a software error.
MCE 0
CPU 28 BANK 1 TSC 1e4849f79b50b5 
MISC 80 ADDR 100f38680 
TIME 1759266613 Tue Sep 30 14:10:13 2025
MCG status:
MCi status:
Corrected error
MCi_MISC register valid
MCi_ADDR register valid
Threshold based error status: green
MCA: corrected filtering (some unreported errors in same region)
Generic CACHE Level-3 Generic Error
STATUS 8c2000419e4b110a MCGSTATUS 0
MCGCAP c16 APICID 58 SOCKETID 0 
MICROCODE 12f
CPUID Vendor Intel Family 6 Model 183 Step 1

Looks like maybe the RAM going bad, run memtest to see if it finds any errors

UGH. But good that G.Skill has a lifetime warranty. Not my first time dealing with them for bad RAM either. Both my other unRAID servers have had bad RAM.

TY, I'll bring it down for maintenance this weekend and run memtest.