Created attachment 860774 [details]
Complete system journal from boot to kernel BUG trace

Upgrading to kernel 5.19.X causes my machine to be no longer able to login to
KDE desktop. The result is black screen with cursor after logging in using
SDDM.

The root cause seems to be kernel BUG triggered by "startplasma-x11" (see
attached system log). The trace suggests some issue with MD RAID 1, which is
used for my "home" FS. However, the FS is already mounted and accessible before
then and seems to be working just fine (even after the bug is triggered).