A recent push into 10.6 that included the following introduced a massive amount of test failures on s390x, which I believe is currently the only big endian target architecture on buildbot.mariadb.org:
f1c615ec181 Fixed failure in test connect.drop-open-error for embedded server
|
89aae15da2e Fixed crash in connect.misc with embedded server
|
0c079f4f76d Updated test cases result for s3.parition
|
b5d65fc105b Optimize performance of my_bitmap
|
d4e1731fbc5 Optimize handler_stats_disable() when handler_stats are already disabled
|
a8f6b86c905 Have ha_partition ignore HA_EXTRA..CHILDREN extra() calls if no myisamrg
|
The third one from the bottom is MDEV-33502, which I suspect to be the culprit.