vn0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
vn0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
vn0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)


Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic id = 1
fault virtual address	= 0xffffffffffffffff
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff8063b1c6
stack pointer	        = 0x10:0xfffff8011843eed8
frame pointer	        = 0x10:0xfffff8011843f068
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		= 1015
current thread          = pri 6 (CRIT)
kernel: type 12 trap, code=0

CPU1 stopping CPUs: 0x0000003d
 stopped
Stopped at      kqueue_register+0x526:  movq    (%r15),%rdx
db>