leak: /dev/xa0 is up; cycling open()/close()
cycle 0 ok
cycle 16 ok
cycle 32 ok
cycle 48 ok
cycle 64 ok
no open() failure after 80 cycles
exit=0
--- /dev/xa0 after:
crw-r-----  1 root  operator   33, 0x1e110007 Sep 19 20:54 /dev/xa0
--- dmesg tag census:
      63
--- kldunload:
kldunload: can't unload file: Device busy
rc=1