panic: runtime error: integer divide by zero

goroutine 1208330 [running]:
panic(0x152b7c0, 0x21bc320)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc00086abe0 sp=0xc00086ab28 pc=0x43611d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc00086ac00 sp=0xc00086abe0 pc=0x43488b
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc000239190, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x3df fp=0xc00086acf8 sp=0xc00086ac00 pc=0x9f56ff
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc000239190, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xe0 fp=0xc00086aea8 sp=0xc00086acf8 pc=0x9f2e50
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc000239190, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x14d6ee0, 0xc00307cf1f, 0x203000, ...)
	pkg/tcpip/stack/conntrack.go:621 +0x158 fp=0xc00086afa0 sp=0xc00086aea8 pc=0x9f61b8
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...)
	pkg/tcpip/stack/iptables.go:422
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc00249c600, 0x14acce0, 0xc000f85b00, 0xc00307cf10)
	pkg/tcpip/transport/tcp/endpoint.go:2017 +0x1eb fp=0xc00086b118 sp=0xc00086afa0 pc=0xcd856b
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc001e73500, 0x7f454df54a00, 0xc00249c600, 0x50, 0x1000, 0x2, 0x7f4520263c80, 0x0, 0x447a17)
	pkg/sentry/socket/netstack/netstack.go:1613 +0xfe7 fp=0xc00086b2c8 sp=0xc00086b118 pc=0xd47537
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc001e73500, 0x18d7520, 0xc004d5a200, 0x7f454df54a00, 0xc00249c600, 0x2, 0x1, 0x0, 0x50, 0x1000, ...)
	pkg/sentry/socket/netstack/netstack.go:998 +0x1bf fp=0xc00086b350 sp=0xc00086b2c8 pc=0xd40e4f
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc004d5a200, 0xc001e73500, 0x0, 0x50, 0x20001280, 0x1000, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:981 +0xad9 fp=0xc00086b588 sp=0xc00086b350 pc=0xd40bd9
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc001e73500, 0x7f454df548e8, 0xc004d5a200, 0x0, 0x50, 0x20001280, 0x1000, 0x10, 0x90, 0x10)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xd7 fp=0xc00086b628 sp=0xc00086b588 pc=0xc405f7
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc001e73500, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x2b7 fp=0xc00086b740 sp=0xc00086b628 pc=0xc40177
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001e73500, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x340, 0x0, ...)
	pkg/sentry/kernel/task_syscall.go:170 +0x44e fp=0xc00086b9e0 sp=0xc00086b740 pc=0xb9cebe
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001e73500, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x407baa, 0xc001e73dd7)
	pkg/sentry/kernel/task_syscall.go:305 +0xb5 fp=0xc00086bac0 sp=0xc00086b9e0 pc=0xb9e575
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001e73500, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x1127662, 0x2baa832)
	pkg/sentry/kernel/task_syscall.go:265 +0x10a fp=0xc00086bb70 sp=0xc00086bac0 pc=0xb9deda
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001e73500, 0x2, 0xc001e73500)
	pkg/sentry/kernel/task_syscall.go:240 +0x1e8 fp=0xc00086bcb0 sp=0xc00086bb70 pc=0xb9d6c8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc001e73500, 0x18a3c80, 0x0)
	pkg/sentry/kernel/task_run.go:274 +0x11d9 fp=0xc00086bee8 sp=0xc00086bcb0 pc=0xb89f59
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001e73500, 0xb3e5)
	pkg/sentry/kernel/task_run.go:92 +0x31d fp=0xc00086bfd0 sp=0xc00086bee8 pc=0xb8812d
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc00086bfd8 sp=0xc00086bfd0 pc=0x46b961
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0x19e