panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x2d8 pc=0x619d30] goroutine 106081 gp=0x4002146c40 m=14 mp=0x400049a008 [running]: panic({0xc2d760?, 0x1a6efc0?}) GOROOT/src/runtime/panic.go:779 +0x140 fp=0x40014db610 sp=0x40014db560 pc=0x4bc60 runtime.panicmem(...) GOROOT/src/runtime/panic.go:261 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:881 +0x308 fp=0x40014db670 sp=0x40014db610 pc=0x66f58 gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).OnCorkOptionSet(0x400d31f508, 0x0?) pkg/tcpip/transport/tcp/endpoint.go:1766 +0x60 fp=0x40014db6c0 sp=0x40014db680 pc=0x619d30 gvisor.dev/gvisor/pkg/tcpip.(*SocketOptions).SetCorkOption(0x106e148?, 0xf0?) pkg/tcpip/socketops.go:474 +0x3c fp=0x40014db6e0 sp=0x40014db6c0 pc=0x260acc gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptTCP(0x4003dd5808?, {0x106e148?, 0x40041140f0?}, {0xfffefb443e60, 0x400d31f508}, 0x3, {0x4003d77e3c, 0x4, 0x400442e008?}) pkg/sentry/socket/netstack/netstack.go:2015 +0x164 fp=0x40014db720 sp=0x40014db6e0 pc=0x68e724 gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x1a74d30?, {0x106e148?, 0x40041140f0?}, {0xfffefb443e60?, 0x400d31f508?}, 0x4003d77e3c?, 0x4?, {0x4003d77e3c?, 0x105c868?, 0x4003d77508?}) pkg/sentry/socket/netstack/netstack.go:1765 +0xac fp=0x40014db780 sp=0x40014db720 pc=0x68daac gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0x40041140f0, 0x4003d77508?, 0x6?, 0x3?, {0x4003d77e3c, 0x4?, 0x90?}) pkg/sentry/socket/netstack/netstack.go:611 +0x27c fp=0x40014db830 sp=0x40014db780 pc=0x68899c gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0x4003d77508, 0x589f8?, {{0x3}, {0x6}, {0x3}, {0x20000140}, {0x4}, {0x0}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x1b8 fp=0x40014db910 sp=0x40014db830 pc=0x7085e8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x4003d77508, 0xd0, {{0x3}, {0x6}, {0x3}, {0x20000140}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x4fc fp=0x40014dbc50 sp=0x40014db910 pc=0x597c0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x4003d77508, 0xd0, {{0x3}, {0x6}, {0x3}, {0x20000140}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x3c fp=0x40014dbcb0 sp=0x40014dbc50 pc=0x598b5c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4003d77508, 0xd0, {{0x3}, {0x6}, {0x3}, {0x20000140}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x58 fp=0x40014dbd00 sp=0x40014dbcb0 pc=0x5987d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x40083f2820?) pkg/sentry/kernel/task_syscall.go:258 +0x23c fp=0x40014dbdf0 sp=0x40014dbd00 pc=0x59858c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x4009f46900?, 0x4003d77508) pkg/sentry/kernel/task_run.go:263 +0xcf4 fp=0x40014dbf20 sp=0x40014dbdf0 pc=0x58d014 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x4003d77508, 0x9dcf) pkg/sentry/kernel/task_run.go:98 +0x1cc fp=0x40014dbfb0 sp=0x40014dbf20 pc=0x58bc9c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x40014dbfd0 sp=0x40014dbfb0 pc=0x59662c runtime.goexit({}) src/runtime/asm_arm64.s:1222 +0x4 fp=0x40014dbfd0 sp=0x40014dbfd0 pc=0x896c4 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 106053 pkg/sentry/kernel/task_start.go:390 +0xe4