I hit this assertion while running a loop of
/tmp/fsstress -n 6400 -p 1
on a fresh HAMMER v4 file system which was mounted normally.
Before the box crashed, I got 3 messages of the type:
HAMMER Warning: depth limit reached on setup recursion, inode ... ...
This box is running latest 2.9 and the file system was also created
after updating.
The core is in ~swildner/crash/crash31.tbz on leaf.
Regards,
Sascha