Ever since a few days ago, where my windows VM stopped working, my server has been randomly rebooting and I'm not sure why. I've kept the VM off, still crashes, turned off some auto-running scripts, still not working, completely removed the old windows vm and built an Ubuntu one instead, still crashing. Attached some diagnostics from the past few days.
 

toshokan-diagnostics-20220424-1937.zip toshokan-diagnostics-20220423-1227.zip

some errors i've found:
 

Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: Machine check events logged
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: CPU 3: Machine Check: 0 Bank 5: bea0000000000108
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: TSC 0 ADDR 1ffff816bd1ee MISC d012000100000000 SYND 4d000000 IPID 500b000000000 
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: PROCESSOR 2:800f11 TIME 1650846747 SOCKET 0 APIC 8 microcode 8001138
Apr 24 19:32:55 Toshokan kernel:  #4  #5  #6
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: Machine check events logged
Apr 24 19:32:55 Toshokan kernel:  #7
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: CPU 6: Machine Check: 0 Bank 5: bea0000000000108
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: TSC 0 ADDR 1ffff813c3d3e MISC d012000100000000 SYND 4d000000 IPID 500b000000000 
Apr 24 19:32:55 Toshokan kernel: mce: [Hardware Error]: PROCESSOR 2:800f11 TIME 1650846747 SOCKET 0 APIC 1 microcode 8001138

 

 

Apr 24 19:33:05 Toshokan ntpd[1954]: kernel reports TIME_ERROR: 0x41: Clock Unsynchronized

 

Apr 24 19:35:27 Toshokan nginx: 2022/04/24 19:35:27 [error] 10330#10330: *125 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 127.0.0.1, server: , request: "GET /admin/api.php?version HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "127.0.0.1"
Apr 24 19:35:27 Toshokan nginx: 2022/04/24 19:35:27 [error] 10330#10330: *127 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 127.0.0.1, server: , request: "GET /admin/api.php?version HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "localhost"
 

2022-04-25 00:34:56.971+0000: 8859: error : virNetSocketReadWire:1826 : End of file while reading data: Input/output error
2022-04-25 00:35:00.403+0000: 8859: error : virNetSocketReadWire:1826 : End of file while reading data: Input/output error
2022-04-25 00:35:03.911+0000: 8859: error : virNetSocketReadWire:1826 : End of file while reading data: Input/output error

 

alright, i have disabled C-state and XMP. fingers crossed that this stops them!

Any idea why it would've taken until now to be an issue? I've had this server since last july/august, with no change to cpu/ram/gpu/whatever.

well, hasn't crashed since, so I'm assuming that was it. thanks!