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Fatal trap 9: general protection fault while in kernel mode
cpuid = 4; lapic id = 4
instruction pointer	= 0x8:0xffffffff8063a634
stack pointer	        = 0x10:0xfffff80118873750
frame pointer	        = 0x10:0xfffff80118873788
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 0, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 2027
current thread          = pri 6 
kernel: type 9 trap, code=0

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      filter_event+0x4:       testb   $0x2,(%rax)
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