Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer	= 0x20:0xffffffff80d56d10
stack pointer	        = 0x28:0xfffffe002a1fe5c0
frame pointer	        = 0x28:0xfffffe002a1fe5d0
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		= 58406 (ifconfig)
trap number		= 9
panic: general protection fault
cpuid = 0
time = 1547600928
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe002a1fe2d0
vpanic() at vpanic+0x1b4/frame 0xfffffe002a1fe330
panic() at panic+0x43/frame 0xfffffe002a1fe390
trap_fatal() at trap_fatal+0x369/frame 0xfffffe002a1fe3e0
trap() at trap+0x6c/frame 0xfffffe002a1fe4f0
calltrap() at calltrap+0x8/frame 0xfffffe002a1fe4f0
--- trap 0x9, rip = 0xffffffff80d56d10, rsp = 0xfffffe002a1fe5c0, rbp = 0xfffffe002a1fe5d0 ---
igmp_domifdetach() at igmp_domifdetach+0x60/frame 0xfffffe002a1fe5d0
in_domifdetach() at in_domifdetach+0xe/frame 0xfffffe002a1fe5f0
if_detach_internal() at if_detach_internal+0xb4e/frame 0xfffffe002a1fe670
if_detach() at if_detach+0x3d/frame 0xfffffe002a1fe690
epair_clone_destroy() at epair_clone_destroy+0x97/frame 0xfffffe002a1fe6e0
if_clone_destroyif() at if_clone_destroyif+0x175/frame 0xfffffe002a1fe730
if_clone_destroy() at if_clone_destroy+0x205/frame 0xfffffe002a1fe780
ifioctl() at ifioctl+0x4ee/frame 0xfffffe002a1fe850
kern_ioctl() at kern_ioctl+0x29b/frame 0xfffffe002a1fe8c0
sys_ioctl() at sys_ioctl+0x15d/frame 0xfffffe002a1fe990
amd64_syscall() at amd64_syscall+0x276/frame 0xfffffe002a1feab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe002a1feab0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8004862fa, rsp = 0x7fffffffe248, rbp = 0x7fffffffe260 ---
KDB: enter: panic
Uptime: 7m15s
Dumping 236 out of 4057 MB:..7%..14%..21%..34%..41%..55%..61%..75%..82%..95%