panic: runtime error: integer divide by zero

goroutine 260095 [running]:
panic(0xef2c60, 0x1a1bb00)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc004d15378 sp=0xc004d152c0 pc=0x43438d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc004d15398 sp=0xc004d15378 pc=0x432afb
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc0002c4410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc004d15438 sp=0xc004d15398 pc=0x80d559
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc0002c4410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc004d15520 sp=0xc004d15438 pc=0x80b7d4
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc0002c4410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc003a83180, 0x20, 0x20, ...)
	pkg/tcpip/stack/conntrack.go:623 +0xe6 fp=0xc004d155b8 sp=0xc004d15520 pc=0x80def6
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...)
	pkg/tcpip/stack/iptables.go:422
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc00480f800, 0xe74120, 0xc003a83180, 0xc000c80270)
	pkg/tcpip/transport/tcp/endpoint.go:2054 +0x1a1 fp=0xc004d156c0 sp=0xc004d155b8 pc=0x9ab281
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc00548ca80, 0x122a480, 0xc004810700, 0x3f00edc5cb40, 0xc00480f800, 0x50, 0x0, 0x600, 0x2, 0x1054160, ...)
	pkg/sentry/socket/netstack/netstack.go:1631 +0xfd2 fp=0xc004d15898 sp=0xc004d156c0 pc=0x9eec92
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc00548ca80, 0x122a480, 0xc004810700, 0x3f00edc5cb40, 0xc00480f800, 0x2, 0x1, 0x0, 0x50, 0x0, ...)
	pkg/sentry/socket/netstack/netstack.go:1003 +0x187 fp=0xc004d15908 sp=0xc004d15898 pc=0x9ea047
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc004810700, 0xc00548ca80, 0x0, 0x50, 0x0, 0x600, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:986 +0x35e fp=0xc004d159c8 sp=0xc004d15908 pc=0x9e9e4e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc00548ca80, 0x3f00f2b9a440, 0xc004810700, 0x0, 0x50, 0x0, 0x600, 0xc00548d3bc, 0x10, 0x90)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc004d15a38 sp=0xc004d159c8 pc=0x93ba2e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc00548ca80, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc004d15b08 sp=0xc004d15a38 pc=0x93b528
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00548ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0xc004d15cd8, 0x1055c40, ...)
	pkg/sentry/kernel/task_syscall.go:103 +0x122 fp=0xc004d15c68 sp=0xc004d15b08 pc=0x8ca622
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00548ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x20000080, 0x0)
	pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc004d15cf0 sp=0xc004d15c68 pc=0x8cb806
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00548ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x11f6dc0, 0x0)
	pkg/sentry/kernel/task_syscall.go:198 +0x96 fp=0xc004d15d50 sp=0xc004d15cf0 pc=0x8cb396
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00548ca80, 0x2, 0xc00548ca80)
	pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc004d15e10 sp=0xc004d15d50 pc=0x8cad2c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00548ca80, 0x11f6dc0, 0x0)
	pkg/sentry/kernel/task_run.go:275 +0xc18 fp=0xc004d15f60 sp=0xc004d15e10 pc=0x8bf6e8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00548ca80, 0x12bb)
	pkg/sentry/kernel/task_run.go:93 +0x18b fp=0xc004d15fd0 sp=0xc004d15f60 pc=0x8be3bb
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc004d15fd8 sp=0xc004d15fd0 pc=0x467d61
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe