panic: runtime error: integer divide by zero

goroutine 146177 [running]:
panic(0xee1b60, 0x19f6840)
	GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc0007e5330 sp=0xc0007e5278 pc=0x43438d
runtime.panicdivide()
	GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc0007e5350 sp=0xc0007e5330 pc=0x432afb
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc000317610, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0)
	pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc0007e53f0 sp=0xc0007e5350 pc=0x7be8a9
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc000317610, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0)
	pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc0007e54d8 sp=0xc0007e53f0 pc=0x7bcb24
gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc000317610, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf4c5e0, ...)
	pkg/tcpip/stack/conntrack.go:623 +0xe6 fp=0xc0007e5570 sp=0xc0007e54d8 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(0xc000ba6000, 0xe63d60, 0xc0018f6140, 0xc001418160)
	pkg/tcpip/transport/tcp/endpoint.go:2017 +0x111 fp=0xc0007e5670 sp=0xc0007e5570 pc=0x9a1d21
gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc000cd4000, 0x7f37c02dca48, 0xc000ba6000, 0x50, 0x1f, 0x2, 0xc0007e57a0, 0x40a605, 0xf4b0e0)
	pkg/sentry/socket/netstack/netstack.go:1632 +0xa32 fp=0xc0007e5740 sp=0xc0007e5670 pc=0x9e65e2
gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc000cd4000, 0x1214b80, 0xc000bac000, 0x7f37c02dca48, 0xc000ba6000, 0x2, 0x1, 0x0, 0x50, 0x1f, ...)
	pkg/sentry/socket/netstack/netstack.go:1017 +0x163 fp=0xc0007e57b0 sp=0xc0007e5740 pc=0x9e2063
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc000bac000, 0xc000cd4000, 0x0, 0x50, 0x0, 0x1f, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:1000 +0x918 fp=0xc0007e59c8 sp=0xc0007e57b0 pc=0x9e1e68
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc000cd4000, 0x7f37c02dc930, 0xc000bac000, 0x0, 0x50, 0x0, 0x1f, 0xc000cd493c, 0x10, 0x90)
	pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc0007e5a38 sp=0xc0007e59c8 pc=0x93220e
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc000cd4000, 0x3, 0x0, 0x50, 0x0, 0x20000200, 0x0, 0x0, 0x0, 0x0, ...)
D0823 18:12:45.286908   58439 transport_flipcall.go:234] recv [channel @0xc0004d8300] Rlerror{Error: 2}
	pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc0007e5b08 sp=0xc0007e5a38 pc=0x931d08
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000cd4000, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000200, 0x0, 0x0, 0x1040dc0, ...)
	pkg/sentry/kernel/task_syscall.go:103 +0x122 fp=0xc0007e5c68 sp=0xc0007e5b08 pc=0x8c18e2
D0823 18:12:45.287091   58439 transport_flipcall.go:127] send [channel @0xc0004d8300] Tgetxattr{FID: 1, Name: trusted.overlay.whiteout.syzcgroup, Size: 1}
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000cd4000, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000200, 0x0, 0x20000200, 0x0)
	pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc0007e5cf0 sp=0xc0007e5c68 pc=0x8c2ac6
D0823 18:12:45.287218       1 transport_flipcall.go:234] recv [channel @0xc000278540] Tgetxattr{FID: 1, Name: trusted.overlay.whiteout.syzcgroup, Size: 1}
D0823 18:12:45.287277       1 transport_flipcall.go:127] send [channel @0xc000278540] Rlerror{Error: 95}
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000cd4000, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000200, 0x0, 0x11e1b01, 0x100000000000000)
	pkg/sentry/kernel/task_syscall.go:198 +0x96 fp=0xc0007e5d50 sp=0xc0007e5cf0 pc=0x8c2656
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000cd4000, 0x2, 0xc000cd4000)
	pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc0007e5e10 sp=0xc0007e5d50 pc=0x8c1fec
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000cd4000, 0x11e1b60, 0x0)
	pkg/sentry/kernel/task_run.go:275 +0xc18 fp=0xc0007e5f60 sp=0xc0007e5e10 pc=0x8b69b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000cd4000, 0x13cf)
	pkg/sentry/kernel/task_run.go:93 +0x18b fp=0xc0007e5fd0 sp=0xc0007e5f60 pc=0x8b568b
runtime.goexit()
	src/runtime/asm_amd64.s:1373 +0x1 fp=0xc0007e5fd8 sp=0xc0007e5fd0 pc=0x467d61
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:318 +0xfe