panic: runtime error: integer divide by zero

goroutine 2290802 [running]:
panic(0xee1b60, 0x19f6840)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc0027b5330 sp=0xc0027b5278 pc=0x43438d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc0027b5350 sp=0xc0027b5330 pc=0x432afb
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc0003421d0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc0027b53f0 sp=0xc0027b5350 pc=0x7be8a9
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc0003421d0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc0027b54d8 sp=0xc0027b53f0 pc=0x7bcb24
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc0003421d0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf4c5e0, ...)
	pkg/tcpip/stack/conntrack.go:623 +0xe6 fp=0xc0027b5570 sp=0xc0027b54d8 pc=0x7bf246
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...)
	pkg/tcpip/stack/iptables.go:422
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc00331f800, 0xe63d60, 0xc001db71e0, 0xc003521e10)
	pkg/tcpip/transport/tcp/endpoint.go:2017 +0x111 fp=0xc0027b5670 sp=0xc0027b5570 pc=0x9a1d21
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc00334ea80, 0x7f4f3a99eb78, 0xc00331f800, 0x50, 0x1000, 0x2, 0xc0027b57a0, 0x40a605, 0xf4b0e0)
	pkg/sentry/socket/netstack/netstack.go:1632 +0xa32 fp=0xc0027b5740 sp=0xc0027b5670 pc=0x9e65e2
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc00334ea80, 0x1214b80, 0xc002db8b00, 0x7f4f3a99eb78, 0xc00331f800, 0x2, 0x1, 0x0, 0x50, 0x1000, ...)
	pkg/sentry/socket/netstack/netstack.go:1017 +0x163 fp=0xc0027b57b0 sp=0xc0027b5740 pc=0x9e2063
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc002db8b00, 0xc00334ea80, 0x0, 0x50, 0x20001280, 0x1000, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:1000 +0x918 fp=0xc0027b59c8 sp=0xc0027b57b0 pc=0x9e1e68
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc00334ea80, 0x7f4f3a99ea60, 0xc002db8b00, 0x0, 0x50, 0x20001280, 0x1000, 0xc00334f3bc, 0x10, 0x90)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc0027b5a38 sp=0xc0027b59c8 pc=0x93220e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc00334ea80, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc0027b5b08 sp=0xc0027b5a38 pc=0x931d08
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00334ea80, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x0, 0x1040dc0, ...)
	pkg/sentry/kernel/task_syscall.go:103 +0x122 fp=0xc0027b5c68 sp=0xc0027b5b08 pc=0x8c18e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00334ea80, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x20000040, 0x0)
	pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc0027b5cf0 sp=0xc0027b5c68 pc=0x8c2ac6
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00334ea80, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x11e1b01, 0x100000000000000)
	pkg/sentry/kernel/task_syscall.go:198 +0x96 fp=0xc0027b5d50 sp=0xc0027b5cf0 pc=0x8c2656
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00334ea80, 0x2, 0xc00334ea80)
	pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc0027b5e10 sp=0xc0027b5d50 pc=0x8c1fec
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc00334ea80, 0x11e1b60, 0x0)
	pkg/sentry/kernel/task_run.go:275 +0xc18 fp=0xc0027b5f60 sp=0xc0027b5e10 pc=0x8b69b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00334ea80, 0xe13a)
	pkg/sentry/kernel/task_run.go:93 +0x18b fp=0xc0027b5fd0 sp=0xc0027b5f60 pc=0x8b568b
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc0027b5fd8 sp=0xc0027b5fd0 pc=0x467d61
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe