Fatal trap 12: page fault while in kernel mode
cpuid = 0; lapic id = 0
fault virtual address	= 0xfffff800555da004
fault code		= supervisor read data, page not present
instruction pointer	= 0x8:0xffffffff809d4ea0
stack pointer	        = 0x10:0xfffff801191a5260
frame pointer	        = 0x10:0xfffff801191a5298
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		= 1375
current thread          = pri 10 
kernel: type 12 trap, code=0

CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      calculate_crc32c+0xf0:  movl    0x4(%rcx),%ebx
db>