Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; lapic id = 0
instruction pointer	= 0x8:0xffffffff809d7830
stack pointer	        = 0x10:0xfffff80117f7f590
frame pointer	        = 0x10:0xfffff80117f7f688
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		= 931
current thread          = pri 6 
kernel: type 9 trap, code=0

CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      strlen: cmpb    $0,(%rdi)
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