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


Fatal trap 12: page fault while in kernel mode
cpuid = 4; lapic id = 4
fault virtual address	= 0xfffff8005a057000
fault code		= supervisor write data, page not present
instruction pointer	= 0x8:0xffffffff80bca655
stack pointer	        = 0x10:0xfffff801166db360
frame pointer	        = 0x10:0xfffff801166db3e8
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		= 915
current thread          = pri 6 
kernel: type 12 trap, code=2

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      memset+0xd5:    repe stosq      %es:(%rdi)
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