Fatal trap 9: general protection fault while in kernel mode
cpuid = 3; lapic id = 3
instruction pointer	= 0x8:0xffffffff831fe27c
stack pointer	        = 0x10:0xfffff80117f2d6d8
frame pointer	        = 0x10:0xfffff80117f2d708
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		= 1000
current thread          = pri 6 
kernel: type 9 trap, code=0

CPU3 stopping CPUs: 0x00000037
 stopped
Stopped at      radeonfb_destroy_pinned_object+0x1c:    movl    -0x2d0(%rdi),%eax
db>