Fatal trap 18: integer divide fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer	= 0x20:0xffffffff80fd7340
stack pointer	        = 0x0:0xfffffe0021158840
frame pointer	        = 0x0:0xfffffe00211588e0
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		= 2104 (syz-executor.1)
trap number		= 18
panic: integer divide fault
cpuid = 1
time = 1566605458
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0021158510
vpanic() at vpanic+0x1e0/frame 0xfffffe0021158570
panic() at panic+0x43/frame 0xfffffe00211585d0
trap_fatal() at trap_fatal+0x4de/frame 0xfffffe0021158650
trap() at trap+0xba/frame 0xfffffe0021158770
calltrap() at calltrap+0x8/frame 0xfffffe0021158770
--- trap 0x12, rip = 0xffffffff80fd7340, rsp = 0xfffffe0021158840, rbp = 0xfffffe00211588e0 ---
kern_fcntl() at kern_fcntl+0xa30/frame 0xfffffe00211588e0
kern_fcntl_freebsd() at kern_fcntl_freebsd+0x14f/frame 0xfffffe0021158970
ia32_syscall() at ia32_syscall+0x46c/frame 0xfffffe0021158ab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x814260e
KDB: enter: panic
[ thread pid 2104 tid 100278 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why