panic: runtime error: integer divide by zero

goroutine 166236 [running]:
panic(0xedaee0, 0x19e67c0)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc001d91330 sp=0xc001d91278 pc=0x43438d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc001d91350 sp=0xc001d91330 pc=0x432afb
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc000b56410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:509 +0x299 fp=0xc001d913f0 sp=0xc001d91350 pc=0x7b8a49
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc000b56410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc001d914d8 sp=0xc001d913f0 pc=0x7b6ca4
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc000b56410, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf44b20, ...)
	pkg/tcpip/stack/conntrack.go:622 +0xe6 fp=0xc001d91570 sp=0xc001d914d8 pc=0x7b93e6
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...)
	pkg/tcpip/stack/iptables.go:422
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc000119600, 0xe5d7e0, 0xc004086060, 0xc00070e1b0)
	pkg/tcpip/transport/tcp/endpoint.go:2015 +0x111 fp=0xc001d91670 sp=0xc001d91570 pc=0x99c1a1
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc013b04000, 0x3f5720489698, 0xc000119600, 0x50, 0x1000, 0x2, 0xc001d917a0, 0x40a605, 0xf43620)
	pkg/sentry/socket/netstack/netstack.go:1613 +0xa32 fp=0xc001d91740 sp=0xc001d91670 pc=0x9dfc52
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc013b04000, 0x1209480, 0xc00392e000, 0x3f5720489698, 0xc000119600, 0x2, 0x1, 0x0, 0x50, 0x1000, ...)
	pkg/sentry/socket/netstack/netstack.go:998 +0x163 fp=0xc001d917b0 sp=0xc001d91740 pc=0x9db6d3
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc00392e000, 0xc013b04000, 0x0, 0x50, 0x20001280, 0x1000, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:981 +0x8a8 fp=0xc001d919c8 sp=0xc001d917b0 pc=0x9db4d8
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc013b04000, 0x3f5720489580, 0xc00392e000, 0x0, 0x50, 0x20001280, 0x1000, 0xc013b0493c, 0x10, 0x90)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc001d91a38 sp=0xc001d919c8 pc=0x92cd8e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc013b04000, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc001d91b08 sp=0xc001d91a38 pc=0x92c888
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc013b04000, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0xc001d91cd8, 0x1038600, ...)
	pkg/sentry/kernel/task_syscall.go:170 +0x122 fp=0xc001d91c68 sp=0xc001d91b08 pc=0x8bc3b2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc013b04000, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x20000040, 0x0)
	pkg/sentry/kernel/task_syscall.go:305 +0x66 fp=0xc001d91cf0 sp=0xc001d91c68 pc=0x8bd596
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc013b04000, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x11d6b80, 0x0)
	pkg/sentry/kernel/task_syscall.go:265 +0x96 fp=0xc001d91d50 sp=0xc001d91cf0 pc=0x8bd126
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc013b04000, 0x2, 0xc013b04000)
	pkg/sentry/kernel/task_syscall.go:240 +0x15c fp=0xc001d91e10 sp=0xc001d91d50 pc=0x8bcabc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc013b04000, 0x11d6b80, 0x0)
	pkg/sentry/kernel/task_run.go:274 +0xc18 fp=0xc001d91f60 sp=0xc001d91e10 pc=0x8b13e8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc013b04000, 0x955)
	pkg/sentry/kernel/task_run.go:92 +0x18b fp=0xc001d91fd0 sp=0xc001d91f60 pc=0x8b00bb
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc001d91fd8 sp=0xc001d91fd0 pc=0x467d61
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe