What you are seeing here may be related to a recent regression that has now been fixed in the most recent release candidates for 9.1.21 and 9.2.10.
- Fix an out-of-bounds access when scanning the bitmap. It leads to a
crash when the bitmap ends on a page boundary, and this is also a
regression in 9.1.20.
The expected result of the bug that has now been fixed in the release candidate would be a page fault, and we can see that in your logs:
BUG: unable to handle page fault for address: 0000100000000008
The final releases with the fix are expected next week, but if this is the issue you may benefit from updating to the release candidate now.