panic: runtime error: integer divide by zero goroutine 75287 [running]: panic(0x15627e0, 0x2223330) GOROOT/src/runtime/panic.go:1064 +0x46d fp=0xc000464ba8 sp=0xc000464af0 pc=0x43611d runtime.panicdivide() GOROOT/src/runtime/panic.go:191 +0x5b fp=0xc000464bc8 sp=0xc000464ba8 pc=0x43488b gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).bucket(0xc00031aad0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0) pkg/tcpip/stack/conntrack.go:508 +0x3df fp=0xc000464cc0 sp=0xc000464bc8 pc=0xa7b05f gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).connForTID(0xc00031aad0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x600000000, 0x800, 0x0, 0x0) pkg/tcpip/stack/conntrack.go:247 +0xe0 fp=0xc000464e70 sp=0xc000464cc0 pc=0xa787b0 gvisor.dev/gvisor/pkg/tcpip/stack.(*ConnTrack).originalDst(0xc00031aad0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x203000, 0x150da20, 0xc0009267ef, ...) pkg/tcpip/stack/conntrack.go:623 +0x158 fp=0xc000464f68 sp=0xc000464e70 pc=0xa7bb18 gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).OriginalDst(...) pkg/tcpip/stack/iptables.go:430 gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).GetSockOpt(0xc000f7a000, 0x18e1ec0, 0xc0002553a0, 0xc0009267e0) pkg/tcpip/transport/tcp/endpoint.go:2051 +0x2e0 fp=0xc0004650e8 sp=0xc000464f68 pc=0xd04920 gvisor.dev/gvisor/pkg/sentry/socket/netstack.getSockOptIP(0xc000b4e000, 0x1916280, 0xc00159c300, 0x7f568003f350, 0xc000f7a000, 0x50, 0x0, 0x600, 0x2, 0xc000465428, ...) pkg/sentry/socket/netstack/netstack.go:1674 +0x1747 fp=0xc0004653b0 sp=0xc0004650e8 pc=0xd74e17 gvisor.dev/gvisor/pkg/sentry/socket/netstack.GetSockOpt(0xc000b4e000, 0x1916280, 0xc00159c300, 0x7f568003f350, 0xc000f7a000, 0x2, 0x1, 0x0, 0x50, 0x0, ...) pkg/sentry/socket/netstack/netstack.go:1006 +0x1e6 fp=0xc000465438 sp=0xc0004653b0 pc=0xd6d606 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).GetSockOpt(0xc00159c300, 0xc000b4e000, 0x0, 0x50, 0x0, 0x600, 0x0, 0x0, 0x0) pkg/sentry/socket/netstack/netstack.go:989 +0x4cf fp=0xc000465588 sp=0xc000465438 pc=0xd6d3bf gvisor.dev/gvisor/pkg/sentry/syscalls/linux.getSockOpt(0xc000b4e000, 0x7f568003f238, 0xc00159c300, 0x0, 0x50, 0x0, 0x600, 0x10, 0x90, 0x10) pkg/sentry/syscalls/linux/sys_socket.go:514 +0xd7 fp=0xc000465628 sp=0xc000465588 pc=0xc69cd7 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.GetSockOpt(0xc000b4e000, 0x3, 0x0, 0x50, 0x0, 0x20000240, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_socket.go:468 +0x2b7 fp=0xc000465740 sp=0xc000465628 pc=0xc69857 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000b4e000, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000240, 0x0, 0x340, 0x0, ...) pkg/sentry/kernel/task_syscall.go:103 +0x44e fp=0xc0004659e0 sp=0xc000465740 pc=0xbb5fae gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000b4e000, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000240, 0x0, 0x407baa, 0xc000b4e8d7) pkg/sentry/kernel/task_syscall.go:238 +0xb5 fp=0xc000465ac0 sp=0xc0004659e0 pc=0xbb7665 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000b4e000, 0x37, 0x3, 0x0, 0x50, 0x0, 0x20000240, 0x0, 0x11627c2, 0x2c11c32) pkg/sentry/kernel/task_syscall.go:198 +0x10a fp=0xc000465b70 sp=0xc000465ac0 pc=0xbb6fca gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000b4e000, 0x2, 0xc000b4e000) pkg/sentry/kernel/task_syscall.go:173 +0x1e8 fp=0xc000465cb0 sp=0xc000465b70 pc=0xbb67b8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000b4e000, 0x18e17c0, 0x0) pkg/sentry/kernel/task_run.go:275 +0x11d9 fp=0xc000465ee8 sp=0xc000465cb0 pc=0xba3109 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000b4e000, 0xbaa) pkg/sentry/kernel/task_run.go:93 +0x31d fp=0xc000465fd0 sp=0xc000465ee8 pc=0xba12dd runtime.goexit() src/runtime/asm_amd64.s:1373 +0x1 fp=0xc000465fd8 sp=0xc000465fd0 pc=0x46b961 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:318 +0x19e