Fatal trap 18: integer divide fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer	= 0x20:0xffffffff80fd8300
stack pointer	        = 0x0:0xfffffe001f5c2840
frame pointer	        = 0x0:0xfffffe001f5c28e0
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		= 9228 (syz-executor.1)
trap number		= 18
panic: integer divide fault
cpuid = 0
time = 1566758899
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001f5c2510
vpanic() at vpanic+0x1e0/frame 0xfffffe001f5c2570
panic() at panic+0x43/frame 0xfffffe001f5c25d0
trap_fatal() at trap_fatal+0x4de/frame 0xfffffe001f5c2650
trap() at trap+0xb8/frame 0xfffffe001f5c2770
calltrap() at calltrap+0x8/frame 0xfffffe001f5c2770
--- trap 0x12, rip = 0xffffffff80fd8300, rsp = 0xfffffe001f5c2840, rbp = 0xfffffe001f5c28e0 ---
kern_fcntl() at kern_fcntl+0xa30/frame 0xfffffe001f5c28e0
kern_fcntl_freebsd() at kern_fcntl_freebsd+0x14f/frame 0xfffffe001f5c2970
ia32_syscall() at ia32_syscall+0x46a/frame 0xfffffe001f5c2ab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x8142636
KDB: enter: panic
[ thread pid 9228 tid 100849 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why