login: [harness] hci_unit_harness loaded: hciu_probe, hciuu_setup, hciu_fire, hciu_dump, hcius_fire, hciud_fire
[harness] === setup: attach unit + ACL link #5 ===
[harness] unit 0xfffff801168ab620 link 0xfffff8008fa92240 attached
[harness] === DF-5754: 300 rounds of [attach + flood-inject + hci_detach] ===
[harness] hci_detach() runs hci_disable + TAILQ_REMOVE + kfree on this thread while btintr() walks hci_unit_list and hci_intr() drains the unit's queues on the netisr thread
[harness] round 0 survived


Fatal trap 12: page fault while in kernel mode
cpuid = 0; lapic id = 0
fault virtual address	= 0x90
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff80647bad
stack pointer	        = 0x10:0xfffff8011771f910
frame pointer	        = 0x10:0xfffff8011771f970
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= Idle
current thread          = pri 12 
kernel: type 12 trap, code=0

CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      lockmgr_exclusive+0x5d: orl     (%r14),%esi
db>