panic: runtime error: integer divide by zero

goroutine 516647 [running]:
panic(0x152b7c0, 0x21bc320)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc0022cabe0 sp=0xc0022cab28 pc=0x43611d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc0022cac00 sp=0xc0022cabe0 pc=0x43488b
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc0002e0ad0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x3df fp=0xc0022cacf8 sp=0xc0022cac00 pc=0x9f56ff
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc0002e0ad0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xe0 fp=0xc0022caea8 sp=0xc0022cacf8 pc=0x9f2e50
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc0002e0ad0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x14d6ee0, 0xc00231018f, 0x203000, ...)
	pkg/tcpip/stack/conntrack.go:621 +0x158 fp=0xc0022cafa0 sp=0xc0022caea8 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(0xc001036000, 0x14acce0, 0xc0002a8680, 0xc002310180)
	pkg/tcpip/transport/tcp/endpoint.go:2017 +0x1eb fp=0xc0022cb118 sp=0xc0022cafa0 pc=0xcd856b
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc000ddca80, 0x7f31d6f6f488, 0xc001036000, 0x50, 0x1000, 0x2, 0x7f31a6edcc80, 0x0, 0x447a17)
	pkg/sentry/socket/netstack/netstack.go:1613 +0xfe7 fp=0xc0022cb2c8 sp=0xc0022cb118 pc=0xd47537
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc000ddca80, 0x18d7520, 0xc001cd5300, 0x7f31d6f6f488, 0xc001036000, 0x2, 0x1, 0x0, 0x50, 0x1000, ...)
	pkg/sentry/socket/netstack/netstack.go:998 +0x1bf fp=0xc0022cb350 sp=0xc0022cb2c8 pc=0xd40e4f
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc001cd5300, 0xc000ddca80, 0x0, 0x50, 0x20001280, 0x1000, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:981 +0xad9 fp=0xc0022cb588 sp=0xc0022cb350 pc=0xd40bd9
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc000ddca80, 0x7f31d6f6f370, 0xc001cd5300, 0x0, 0x50, 0x20001280, 0x1000, 0x10, 0x90, 0x10)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xd7 fp=0xc0022cb628 sp=0xc0022cb588 pc=0xc405f7
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc000ddca80, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x2b7 fp=0xc0022cb740 sp=0xc0022cb628 pc=0xc40177
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000ddca80, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x340, 0x0, ...)
	pkg/sentry/kernel/task_syscall.go:170 +0x44e fp=0xc0022cb9e0 sp=0xc0022cb740 pc=0xb9cebe
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000ddca80, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x407baa, 0xc000ddd357)
	pkg/sentry/kernel/task_syscall.go:305 +0xb5 fp=0xc0022cbac0 sp=0xc0022cb9e0 pc=0xb9e575
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000ddca80, 0x37, 0x3, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x1127662, 0x2baa832)
	pkg/sentry/kernel/task_syscall.go:265 +0x10a fp=0xc0022cbb70 sp=0xc0022cbac0 pc=0xb9deda
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000ddca80, 0x2, 0xc000ddca80)
	pkg/sentry/kernel/task_syscall.go:240 +0x1e8 fp=0xc0022cbcb0 sp=0xc0022cbb70 pc=0xb9d6c8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000ddca80, 0x18a3c80, 0x0)
	pkg/sentry/kernel/task_run.go:274 +0x11d9 fp=0xc0022cbee8 sp=0xc0022cbcb0 pc=0xb89f59
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000ddca80, 0x49e9)
	pkg/sentry/kernel/task_run.go:92 +0x31d fp=0xc0022cbfd0 sp=0xc0022cbee8 pc=0xb8812d
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc0022cbfd8 sp=0xc0022cbfd0 pc=0x46b961
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0x19e