panic: runtime error: integer divide by zero goroutine 180193 [running]: panic(0xee1b60, 0x19f6840) GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc00108f330 sp=0xc00108f278 pc=0x43438d runtime.panicdivide() GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc00108f350 sp=0xc00108f330 pc=0x432afb gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc000343610, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0) pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc00108f3f0 sp=0xc00108f350 pc=0x7be8a9 gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc000343610, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0) pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc00108f4d8 sp=0xc00108f3f0 pc=0x7bcb24 gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc000343610, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf4c5e0, ...) pkg/tcpip/stack/conntrack.go:623 +0xe6 fp=0xc00108f570 sp=0xc00108f4d8 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(0xc0005aec00, 0xe63d60, 0xc0003fab20, 0xc001e8a970) pkg/tcpip/transport/tcp/endpoint.go:2017 +0x111 fp=0xc00108f670 sp=0xc00108f570 pc=0x9a1d21 gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc000c2ca80, 0x7fa518355120, 0xc0005aec00, 0x50, 0x107, 0x2, 0xc00108f7a0, 0x40a605, 0xf4b0e0) pkg/sentry/socket/netstack/netstack.go:1632 +0xa32 fp=0xc00108f740 sp=0xc00108f670 pc=0x9e65e2 gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc000c2ca80, 0x1214b80, 0xc00131e000, 0x7fa518355120, 0xc0005aec00, 0x2, 0x1, 0x0, 0x50, 0x107, ...) pkg/sentry/socket/netstack/netstack.go:1017 +0x163 fp=0xc00108f7b0 sp=0xc00108f740 pc=0x9e2063 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc00131e000, 0xc000c2ca80, 0x0, 0x50, 0x0, 0x107, 0x0, 0x0, 0x0) pkg/sentry/socket/netstack/netstack.go:1000 +0x918 fp=0xc00108f9c8 sp=0xc00108f7b0 pc=0x9e1e68 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc000c2ca80, 0x7fa518355008, 0xc00131e000, 0x0, 0x50, 0x0, 0x107, 0xc000c2d3bc, 0x10, 0x90) pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc00108fa38 sp=0xc00108f9c8 pc=0x93220e gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc000c2ca80, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc00108fb08 sp=0xc00108fa38 pc=0x931d08 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000c2ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x0, 0x1040dc0, ...) pkg/sentry/kernel/task_syscall.go:103 +0x122 fp=0xc00108fc68 sp=0xc00108fb08 pc=0x8c18e2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000c2ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x20000080, 0x0) pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc00108fcf0 sp=0xc00108fc68 pc=0x8c2ac6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000c2ca80, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000080, 0x0, 0x11e1b01, 0x100000000000000) pkg/sentry/kernel/task_syscall.go:198 +0x96 fp=0xc00108fd50 sp=0xc00108fcf0 pc=0x8c2656 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000c2ca80, 0x2, 0xc000c2ca80) pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc00108fe10 sp=0xc00108fd50 pc=0x8c1fec gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000c2ca80, 0x11e1b60, 0x0) pkg/sentry/kernel/task_run.go:275 +0xc18 fp=0xc00108ff60 sp=0xc00108fe10 pc=0x8b69b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000c2ca80, 0x1557) pkg/sentry/kernel/task_run.go:93 +0x18b fp=0xc00108ffd0 sp=0xc00108ff60 pc=0x8b568b runtime.goexit() src/runtime/asm_amd64.s:1373 +0x1 fp=0xc00108ffd8 sp=0xc00108ffd0 pc=0x467d61 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:318 +0xfe