Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer	= 0x20:0xffffffff81458c09
stack pointer	        = 0x28:0xfffffe0028bf8810
frame pointer	        = 0x28:0xfffffe0028bf8980
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		= 6331 (syz-executor.1)
trap number		= 9
panic: general protection fault
cpuid = 0
time = 459994762
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0028bf84e0
vpanic() at vpanic+0x1e0/frame 0xfffffe0028bf8540
panic() at panic+0x43/frame 0xfffffe0028bf85a0
trap_fatal() at trap_fatal+0x4c6/frame 0xfffffe0028bf8620
trap() at trap+0xba/frame 0xfffffe0028bf8740
calltrap() at calltrap+0x8/frame 0xfffffe0028bf8740
--- trap 0x9, rip = 0xffffffff81458c09, rsp = 0xfffffe0028bf8810, rbp = 0xfffffe0028bf8980 ---
sys_nlm_syscall() at sys_nlm_syscall+0xb59/frame 0xfffffe0028bf8980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0028bf8ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0028bf8ab0
--- syscall (154, FreeBSD ELF64, sys_nlm_syscall), rip = 0x20000009, rsp = 0x7fffdfffdeb8, rbp = 0x98 ---
KDB: enter: panic
[ thread pid 6331 tid 100854 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why