This is xnu-8019. See this file in:
Directory listing for xnu-8019//tests/iokit
io_catalog_send_data.m
ioserviceusernotification_race.c
ioserviceusernotification_race.entitlements
map_memory_port_leak_45265408.c
map_memory_port_leak_45265408.entitlements
port_object_description_race_77259918.c
rosetta_map_mmio.c
rosetta_map_mmio.entitlements
service_helpers.c
service_helpers.h