I had the same thing.
No web interface, only SSH.
Reboot not possible, only kill -9 -1.
On my NAS the dmesg command showed:
[...] Internal error: Oops: 96000007 [#1] SMP
[...] CPU: 2 PID: 10581 Comm: flush_memory.sh Tainted: P O 4.2.8 #2
Now see in crontab:
0 1 * * * /etc/init.d/flush_memory.sh >/dev/null 2>&1
At around 1 AM…?
I’m testing now 5.2.4.3092 (2025-04-03) on TS-832PXU-RP-4G.
Configuration OK, storage pools OK, RAID resyncing OK, SMB OK.
No errors, still working.