Kernel panic into unclean shutdown - 1.5 month since previous [syslog captured this time]

Hi guys, documenting my investigation here but of course interested in anyone who can spot the smoking gun.

A little more than a month ago (early Dec, this crash is Jan 22), I had a server crash (first time in about a year or so), with no syslog captured so I turned it on and piped it to another Unraid server on my home network. Today, while away from home, the server became unresponsive sometime in the AM and I came home to find it hanging--made sure that there was an up-to-date syslog on the other server, and then shut down (uncleanly, held power).

Unraid Version: 6.11.1

Intel® Core™ i7-6700K CPU @ 4.00GHz

48 GB DDR4

Mobo details ASUSTeK COMPUTER INC. TUF Z270 MARK 1 , Version Rev 1.xx
American Megatrends Inc., Version 1301
BIOS dated: Wed 14 Mar 2018 12:00:00 AM PDT

Powered by UPS (but I don't think it was a power blip...)

The system log has from Dec to Jan 22 pretty much just 60k lines of of "synthetic_pathref opening [path] failed {sensitive info}", so I've just snipped the important tail here from the last log from a few days ago.syslog-192.168.1.105.log.tail.txt

Diagnostics file (after the server was restarted, maybe not super useful.)

castle-diagnostics-20250122-2322.zip

The server is back on and beginning a parity check.

As for my next steps, I fed the tail end of the syslog into chatgpt to see what it thought, and got some good direction;

1) Check drives for SMART report

2) Memtest

3) "Check logs for docker containers?"
4) Update all containers, BIOS, Unraid itself

Based on these particular log lines, I think it's gotta be docker related:

Jan 22 09:05:56 Castle kernel: kernel BUG at fs/inode.c:1760!
Jan 22 09:05:56 Castle kernel: invalid opcode: 0000 [#1] PREEMPT SMP PTI
Jan 22 09:05:56 Castle kernel: CPU: 7 PID: 5205 Comm: containerd-shim Not tainted 5.19.14-Unraid #1

I went looking to see what was going on around 9:00AM today, and saw that a family member was watching Plex (and transcoding) as recently as 10:00AM... not sure how it could be working then based on the logs, but maybe the server wasn't truly hanging until later in the day? It was around noon/12:00 when I noticed it was unresponsive. By the evening, I had some family members asking me if Plex was broken.

When I got home I hard-powered off the server, maybe causing an unclean shutdown when I didn't need to.

Curious to hear what anyone else thinks. Parity check will probably run till tomorrow.