Fatal trap 9: general protection fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer	= 0x20:0xffffffff8143a9a2
stack pointer	        = 0x28:0xfffffe001f5dd5f0
frame pointer	        = 0x28:0xfffffe001f5dd650
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		= 1585 (ifconfig)
trap number		= 9
panic: general protection fault
cpuid = 1
time = 1566536992
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001f5dd2c0
vpanic() at vpanic+0x1e0/frame 0xfffffe001f5dd320
panic() at panic+0x43/frame 0xfffffe001f5dd380
trap_fatal() at trap_fatal+0x4de/frame 0xfffffe001f5dd400
trap() at trap+0xba/frame 0xfffffe001f5dd520
calltrap() at calltrap+0x8/frame 0xfffffe001f5dd520
--- trap 0x9, rip = 0xffffffff8143a9a2, rsp = 0xfffffe001f5dd5f0, rbp = 0xfffffe001f5dd650 ---
udp6_common_ctlinput() at udp6_common_ctlinput+0x22/frame 0xfffffe001f5dd650
pfctlinput() at pfctlinput+0x73/frame 0xfffffe001f5dd690
if_up() at if_up+0x62/frame 0xfffffe001f5dd6d0
ifhwioctl() at ifhwioctl+0x1385/frame 0xfffffe001f5dd760
ifioctl() at ifioctl+0x5d0/frame 0xfffffe001f5dd840
kern_ioctl() at kern_ioctl+0x465/frame 0xfffffe001f5dd8b0
sys_ioctl() at sys_ioctl+0x267/frame 0xfffffe001f5dd980
amd64_syscall() at amd64_syscall+0x479/frame 0xfffffe001f5ddab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe001f5ddab0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8004882ca, rsp = 0x7fffffffe408, rbp = 0x7fffffffe460 ---
KDB: enter: panic
[ thread pid 1585 tid 100076 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why