panic: runtime error: integer divide by zero

goroutine 38229 [running]:
panic(0xedf940, 0x19f2840)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc001d5b330 sp=0xc001d5b278 pc=0x43438d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc001d5b350 sp=0xc001d5b330 pc=0x432afb
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc00017e890, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc001d5b3f0 sp=0xc001d5b350 pc=0x7bd3b9
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc00017e890, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc001d5b4d8 sp=0xc001d5b3f0 pc=0x7bb634
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc00017e890, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf4a1e0, ...)
	pkg/tcpip/stack/conntrack.go:623 +0xe6 fp=0xc001d5b570 sp=0xc001d5b4d8 pc=0x7bdd56
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...)
	pkg/tcpip/stack/iptables.go:422
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc002688000, 0xe61c40, 0xc000b43820, 0xc0001f22b0)
	pkg/tcpip/transport/tcp/endpoint.go:2017 +0x111 fp=0xc001d5b670 sp=0xc001d5b570 pc=0x9a0831
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc001908000, 0x3f3d93ba67d0, 0xc002688000, 0x50, 0x1000, 0x2, 0xc001d5b7a0, 0x40a605, 0xf48ce0)
	pkg/sentry/socket/netstack/netstack.go:1632 +0xa32 fp=0xc001d5b740 sp=0xc001d5b670 pc=0x9e50f2
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc001908000, 0x1212300, 0xc00268c000, 0x3f3d93ba67d0, 0xc002688000, 0x2, 0x1, 0x0, 0x50, 0x1000, ...)
	pkg/sentry/socket/netstack/netstack.go:1017 +0x163 fp=0xc001d5b7b0 sp=0xc001d5b740 pc=0x9e0b73
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc00268c000, 0xc001908000, 0x0, 0x50, 0x20000280, 0x1000, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:1000 +0x918 fp=0xc001d5b9c8 sp=0xc001d5b7b0 pc=0x9e0978
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc001908000, 0x3f3d93ba66b8, 0xc00268c000, 0x0, 0x50, 0x20000280, 0x1000, 0xc00190893c, 0x10, 0x90)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc001d5ba38 sp=0xc001d5b9c8 pc=0x930d1e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc001908000, 0x3, 0x0, 0x50, 0x20000280, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc001d5bb08 sp=0xc001d5ba38 pc=0x930818
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001908000, 0x37, 0x3, 0x0, 0x50, 0x20000280, 0x20000040, 0x0, 0xc001d5bcd8, 0x103e6e0, ...)
	pkg/sentry/kernel/task_syscall.go:103 +0x122 fp=0xc001d5bc68 sp=0xc001d5bb08 pc=0x8c03f2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001908000, 0x37, 0x3, 0x0, 0x50, 0x20000280, 0x20000040, 0x0, 0x20000040, 0x0)
	pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc001d5bcf0 sp=0xc001d5bc68 pc=0x8c15d6
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001908000, 0x37, 0x3, 0x0, 0x50, 0x20000280, 0x20000040, 0x0, 0x11df3a0, 0x0)
	pkg/sentry/kernel/task_syscall.go:198 +0x96 fp=0xc001d5bd50 sp=0xc001d5bcf0 pc=0x8c1166
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001908000, 0x2, 0xc001908000)
	pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc001d5be10 sp=0xc001d5bd50 pc=0x8c0afc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc001908000, 0x11df3a0, 0x0)
	pkg/sentry/kernel/task_run.go:275 +0xc18 fp=0xc001d5bf60 sp=0xc001d5be10 pc=0x8b54c8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001908000, 0xcd)
	pkg/sentry/kernel/task_run.go:93 +0x18b fp=0xc001d5bfd0 sp=0xc001d5bf60 pc=0x8b419b
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc001d5bfd8 sp=0xc001d5bfd0 pc=0x467d61
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe