set $rip = 0xdead000000000000
db> show registers
cs          8   gd_curthread
ss          10  gd_curthread+0x8
rax         fffff800905f8680
rcx         0
rdx         0
rbx         0
rsp         fffff801180c7738
rbp         fffff801180c7738
rsi         fffff801180c7fc0
rdi         ffffffff81199740    dumppcb+0x500
rip         dead000000000000
rfl         246 gd_cnt+0x19e
r8          7fe690d1780
r9          0
r10         0
r11         0
r12         fffff801180c7818
r13         fffff800905f8680
r14         fffff801180c78d8
r15         0
dr0         0
dr1         0
dr2         0
dr3         0
dr4         ffff0ff0
dr5         400 gd_cnt+0x358
dr6         ffff0ff0
dr7         400 gd_cnt+0x358
-0x2153000000000000:

Fatal trap 9: general protection fault while in kernel mode
cpuid = 3; lapic id = 3
instruction pointer	= 0x8:0xffffffff80bccb70
stack pointer	        = 0x10:0xfffff801180c7360
frame pointer	        = 0x10:0xfffff801180c7388
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		= 808
current thread          = pri 6 (CRIT)
    kernel: type 9 trap, code=0
db>