Fatal trap 12: page fault while in kernel mode
cpuid = 0; lapic id = 0
fault virtual address	= 0x28
fault code		= supervisor read data, page not present
current process		= Idle
current thread          = pri 12
kernel: type 12 trap, code=0
CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      device_get_parent:      movq    0x28(%rdi),%rax