panic: runtime error: integer divide by zero

goroutine 587808 [running]:
panic(0xedb660, 0x19eb7e0)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc001a35330 sp=0xc001a35278 pc=0x43438d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc001a35350 sp=0xc001a35330 pc=0x432afb
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc0001ca410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc001a353f0 sp=0xc001a35350 pc=0x7ba679
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc0001ca410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc001a354d8 sp=0xc001a353f0 pc=0x7b88f4
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc0001ca410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf456e0, ...)
	pkg/tcpip/stack/conntrack.go:621 +0xe6 fp=0xc001a35570 sp=0xc001a354d8 pc=0x7bb016
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...)
	pkg/tcpip/stack/iptables.go:422
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc001e6b800, 0xe5da20, 0xc0596a6460, 0xc00db6afb0)
	pkg/tcpip/transport/tcp/endpoint.go:2017 +0x111 fp=0xc001a35670 sp=0xc001a35570 pc=0x99df11
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc03ea5ca80, 0x7f12d1f23480, 0xc001e6b800, 0x50, 0x31313131, 0x2, 0xc001a357a0, 0x40a605, 0xf441e0)
	pkg/sentry/socket/netstack/netstack.go:1613 +0xa32 fp=0xc001a35740 sp=0xc001a35670 pc=0x9e1b02
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc03ea5ca80, 0x120c260, 0xc001e64b00, 0x7f12d1f23480, 0xc001e6b800, 0x2, 0x1, 0x0, 0x50, 0x31313131, ...)
	pkg/sentry/socket/netstack/netstack.go:998 +0x163 fp=0xc001a357b0 sp=0xc001a35740 pc=0x9dd583
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc001e64b00, 0xc03ea5ca80, 0x0, 0x50, 0x0, 0x31313131, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:981 +0x8a8 fp=0xc001a359c8 sp=0xc001a357b0 pc=0x9dd388
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc03ea5ca80, 0x7f12d1f23368, 0xc001e64b00, 0x0, 0x50, 0x0, 0x31313131, 0xc03ea5d3bc, 0x10, 0x90)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc001a35a38 sp=0xc001a359c8 pc=0x92e74e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc03ea5ca80, 0x3, 0x0, 0x50, 0x0, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc001a35b08 sp=0xc001a35a38 pc=0x92e248
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc03ea5ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000040, 0x0, 0x0, 0x1039940, ...)
	pkg/sentry/kernel/task_syscall.go:170 +0x122 fp=0xc001a35c68 sp=0xc001a35b08 pc=0x8bdd72
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc03ea5ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000040, 0x0, 0x20000040, 0x0)
	pkg/sentry/kernel/task_syscall.go:305 +0x66 fp=0xc001a35cf0 sp=0xc001a35c68 pc=0x8bef56
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc03ea5ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000040, 0x0, 0x11d9501, 0x100000000000000)
	pkg/sentry/kernel/task_syscall.go:265 +0x96 fp=0xc001a35d50 sp=0xc001a35cf0 pc=0x8beae6
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc03ea5ca80, 0x2, 0xc03ea5ca80)
	pkg/sentry/kernel/task_syscall.go:240 +0x15c fp=0xc001a35e10 sp=0xc001a35d50 pc=0x8be47c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc03ea5ca80, 0x11d9540, 0x0)
	pkg/sentry/kernel/task_run.go:274 +0xc18 fp=0xc001a35f60 sp=0xc001a35e10 pc=0x8b2da8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc03ea5ca80, 0x4390)
	pkg/sentry/kernel/task_run.go:92 +0x18b fp=0xc001a35fd0 sp=0xc001a35f60 pc=0x8b1a7b
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc001a35fd8 sp=0xc001a35fd0 pc=0x467d61
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe