Comment # 3 on bug 1196213 from Alexander Krupp

previous kernel:
Linux think14 5.14.21-150400.3-preempt #1 SMP PREEMPT Wed Dec 15 17:37:19 UTC
2021 (d20e650) x86_64 x86_64 x86_64 GNU/Linux

switched to:
https://download.opensuse.org/repositories/Kernel:/SLE15-SP4/pool/Kernel:SLE15-SP4.repo
Linux think14 5.14.21-150400.73.gb2592d1-default #1 SMP PREEMPT_DYNAMIC Sat Feb
19 23:41:07 UTC 2022 (b2592d1) x86_64 x86_64 x86_64 GNU/Linux

The problem did not occur often, with logs starting at 28.12.2021:

/var/log/messages-20220222.xz:2022-02-16T21:56:00.252233+01:00 think14 kernel:
[335676.534410][ T1949] BUG: unable to handle page fault for address:
fffffffffffffff4
/var/log/messages-20220222.xz:2022-02-20T09:31:37.238026+01:00 think14 kernel:
[300708.525612][T16734] BUG: unable to handle page fault for address:
fffffffffffffff4
/var/log/messages-20220222.xz:2022-02-20T23:15:04.065920+01:00 think14 kernel:
[350114.491374][ T1945] BUG: unable to handle page fault for address:
fffffffffffffff4

I will continue my usual workload and report back in a couple of days.