panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x2d8 pc=0x619d30] goroutine 16283 gp=0x400378e380 m=38 mp=0x4002380008 [running]: panic({0xc2d760?, 0x1a6efc0?}) GOROOT/src/runtime/panic.go:779 +0x140 fp=0x4000e03610 sp=0x4000e03560 pc=0x4bc60 runtime.panicmem(...) GOROOT/src/runtime/panic.go:261 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:881 +0x308 fp=0x4000e03670 sp=0x4000e03610 pc=0x66f58 gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).OnCorkOptionSet(0x4001aa7108, 0x0?) pkg/tcpip/transport/tcp/endpoint.go:1766 +0x60 fp=0x4000e036c0 sp=0x4000e03680 pc=0x619d30 gvisor.dev/gvisor/pkg/tcpip.(*SocketOptions).SetCorkOption(0x106e148?, 0x90?) pkg/tcpip/socketops.go:474 +0x3c fp=0x4000e036e0 sp=0x4000e036c0 pc=0x260acc gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptTCP(0x4002a8d208?, {0x106e148?, 0x4002a8e690?}, {0xfffef9f40900, 0x4001aa7108}, 0x3, {0x40056f693c, 0x4, 0x4002ecd008?}) pkg/sentry/socket/netstack/netstack.go:2015 +0x164 fp=0x4000e03720 sp=0x4000e036e0 pc=0x68e724 gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x1a74d30?, {0x106e148?, 0x4002a8e690?}, {0xfffef9f40900?, 0x4001aa7108?}, 0x40056f693c?, 0x4?, {0x40056f693c?, 0x105c868?, 0x40056f6008?}) pkg/sentry/socket/netstack/netstack.go:1765 +0xac fp=0x4000e03780 sp=0x4000e03720 pc=0x68daac gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0x4002a8e690, 0x40056f6008?, 0x6?, 0x3?, {0x40056f693c, 0x4?, 0x90?}) pkg/sentry/socket/netstack/netstack.go:611 +0x27c fp=0x4000e03830 sp=0x4000e03780 pc=0x68899c gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0x40056f6008, 0x0?, {{0x3}, {0x6}, {0x3}, {0x200001c0}, {0x4}, {0x0}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x1b8 fp=0x4000e03910 sp=0x4000e03830 pc=0x7085e8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40056f6008, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200001c0}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x4fc fp=0x4000e03c50 sp=0x4000e03910 pc=0x597c0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40056f6008, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200001c0}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x3c fp=0x4000e03cb0 sp=0x4000e03c50 pc=0x598b5c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x40056f6008, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200001c0}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x58 fp=0x4000e03d00 sp=0x4000e03cb0 pc=0x5987d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x40068d1a00?) pkg/sentry/kernel/task_syscall.go:258 +0x23c fp=0x4000e03df0 sp=0x4000e03d00 pc=0x59858c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x40090701b0?, 0x40056f6008) pkg/sentry/kernel/task_run.go:263 +0xcf4 fp=0x4000e03f20 sp=0x4000e03df0 pc=0x58d014 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40056f6008, 0x178f) pkg/sentry/kernel/task_run.go:98 +0x1cc fp=0x4000e03fb0 sp=0x4000e03f20 pc=0x58bc9c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x4000e03fd0 sp=0x4000e03fb0 pc=0x59662c runtime.goexit({}) src/runtime/asm_arm64.s:1222 +0x4 fp=0x4000e03fd0 sp=0x4000e03fd0 pc=0x896c4 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 16357 pkg/sentry/kernel/task_start.go:390 +0xe4