> (gdb) p *mb_map
> start = 3390611456, end = 3388514304, object = {uvm_obj = 0xdeadbeef,
> flags = 239 '\xef'}, nentries = 24, size = 2097152, ref_count = 2,
it runs out of mb_map. so increasing NMBCLUSTERS can be a workaround.
(the famous "increase NMBCLUSTERS" message didn't appear due to a bug.)
YAMAMOTO Takashi