panic: runtime error: integer divide by zero goroutine 261166 [running]: panic(0xee1b60, 0x19f6840) GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc004a3b330 sp=0xc004a3b278 pc=0x43438d runtime.panicdivide() GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc004a3b350 sp=0xc004a3b330 pc=0x432afb gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc001126650, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0) pkg/tcpip/stack/conntrack.go:508 +0x299 fp=0xc004a3b3f0 sp=0xc004a3b350 pc=0x7be8a9 gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc001126650, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0) pkg/tcpip/stack/conntrack.go:247 +0xa4 fp=0xc004a3b4d8 sp=0xc004a3b3f0 pc=0x7bcb24 gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc001126650, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x20, 0xf4c5e0, ...) pkg/tcpip/stack/conntrack.go:623 +0xe6 fp=0xc004a3b570 sp=0xc004a3b4d8 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(0xc004642000, 0xe63d60, 0xc00eea4900, 0xc0272501a0) pkg/tcpip/transport/tcp/endpoint.go:2017 +0x111 fp=0xc004a3b670 sp=0xc004a3b570 pc=0x9a1d21 gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc0085c0000, 0x3f2220db5670, 0xc004642000, 0x50, 0x1000, 0x2, 0xc004a3b7a0, 0x40a605, 0xf4b0e0) pkg/sentry/socket/netstack/netstack.go:1632 +0xa32 fp=0xc004a3b740 sp=0xc004a3b670 pc=0x9e65e2 gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc0085c0000, 0x1214b80, 0xc005da2700, 0x3f2220db5670, 0xc004642000, 0x2, 0x1, 0x0, 0x50, 0x1000, ...) pkg/sentry/socket/netstack/netstack.go:1017 +0x163 fp=0xc004a3b7b0 sp=0xc004a3b740 pc=0x9e2063 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc005da2700, 0xc0085c0000, 0x0, 0x50, 0x20001280, 0x1000, 0x0, 0x0, 0x0) pkg/sentry/socket/netstack/netstack.go:1000 +0x918 fp=0xc004a3b9c8 sp=0xc004a3b7b0 pc=0x9e1e68 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc0085c0000, 0x3f221f589318, 0xc005da2700, 0x0, 0x50, 0x20001280, 0x1000, 0xc0085c093c, 0x10, 0x90) pkg/sentry/syscalls/linux/sys_socket.go:514 +0xae fp=0xc004a3ba38 sp=0xc004a3b9c8 pc=0x93220e gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc0085c0000, 0x6, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_socket.go:468 +0x218 fp=0xc004a3bb08 sp=0xc004a3ba38 pc=0x931d08 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0085c0000, 0x37, 0x6, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0xc004a3bcd8, 0x1040dc0, ...) pkg/sentry/kernel/task_syscall.go:103 +0x122 fp=0xc004a3bc68 sp=0xc004a3bb08 pc=0x8c18e2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0085c0000, 0x37, 0x6, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x20000040, 0x0) pkg/sentry/kernel/task_syscall.go:238 +0x66 fp=0xc004a3bcf0 sp=0xc004a3bc68 pc=0x8c2ac6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0085c0000, 0x37, 0x6, 0x0, 0x50, 0x20001280, 0x20000040, 0x0, 0x11e1b60, 0x0) pkg/sentry/kernel/task_syscall.go:198 +0x96 fp=0xc004a3bd50 sp=0xc004a3bcf0 pc=0x8c2656 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0085c0000, 0x2, 0xc0085c0000) pkg/sentry/kernel/task_syscall.go:173 +0x15c fp=0xc004a3be10 sp=0xc004a3bd50 pc=0x8c1fec gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0085c0000, 0x11e1b60, 0x0) pkg/sentry/kernel/task_run.go:275 +0xc18 fp=0xc004a3bf60 sp=0xc004a3be10 pc=0x8b69b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0085c0000, 0x10e8) pkg/sentry/kernel/task_run.go:93 +0x18b fp=0xc004a3bfd0 sp=0xc004a3bf60 pc=0x8b568b runtime.goexit() src/runtime/asm_amd64.s:1373 +0x1 fp=0xc004a3bfd8 sp=0xc004a3bfd0 pc=0x467d61 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:318 +0xfe