panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6aab14] goroutine 163 gp=0x40006be1c0 m=12 mp=0x40007aa808 [running]: panic({0xd0d720?, 0x1d293d0?}) GOROOT/src/runtime/panic.go:779 +0x140 fp=0x40006cf610 sp=0x40006cf560 pc=0x4bc60 runtime.panicmem(...) GOROOT/src/runtime/panic.go:261 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:881 +0x308 fp=0x40006cf670 sp=0x40006cf610 pc=0x66f58 gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).OnCorkOptionSet(0x4000842008, 0xd8?) pkg/tcpip/transport/tcp/endpoint.go:1766 +0x74 fp=0x40006cf6c0 sp=0x40006cf680 pc=0x6aab14 gvisor.dev/gvisor/pkg/tcpip.(*SocketOptions).SetCorkOption(0x116b308?, 0xf0?) pkg/tcpip/socketops.go:474 +0x6c fp=0x40006cf6e0 sp=0x40006cf6c0 pc=0x26f78c gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptTCP(0x104?, {0x116b308?, 0x40008280f0?}, {0xffff05d40008, 0x4000842008}, 0x3, {0x40009ae93c, 0x4, 0x40006d9008?}) pkg/sentry/socket/netstack/netstack.go:2015 +0x1b8 fp=0x40006cf720 sp=0x40006cf6e0 pc=0x7324f8 gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x1d2de60?, {0x116b308?, 0x40008280f0?}, {0xffff05d40008?, 0x4000842008?}, 0x40009ae93c?, 0x4?, {0x40009ae93c?, 0x1159b28?, 0x40009ae008?}) pkg/sentry/socket/netstack/netstack.go:1765 +0xd0 fp=0x40006cf780 sp=0x40006cf720 pc=0x731440 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0x40008280f0, 0x40009ae008?, 0x6?, 0x3?, {0x40009ae93c, 0x4?, 0x90?}) pkg/sentry/socket/netstack/netstack.go:611 +0x228 fp=0x40006cf830 sp=0x40006cf780 pc=0x72b298 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0x40009ae008, 0x83870?, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x250 fp=0x40006cf910 sp=0x40006cf830 pc=0x7b0310 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40009ae008, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/kernel/task_syscall.go:143 +0x678 fp=0x40006cfc50 sp=0x40006cf910 pc=0x61c008 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40009ae008, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/kernel/task_syscall.go:323 +0x48 fp=0x40006cfcb0 sp=0x40006cfc50 pc=0x61d2d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x40009ae008, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/kernel/task_syscall.go:283 +0x7c fp=0x40006cfd00 sp=0x40006cfcb0 pc=0x61ce9c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x40006c4b60?) pkg/sentry/kernel/task_syscall.go:258 +0x2e8 fp=0x40006cfdf0 sp=0x40006cfd00 pc=0x61cbc8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x400082c000?, 0x40009ae008) pkg/sentry/kernel/task_run.go:263 +0x10b4 fp=0x40006cff20 sp=0x40006cfdf0 pc=0x60fae4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40009ae008, 0x8) pkg/sentry/kernel/task_run.go:98 +0x248 fp=0x40006cffb0 sp=0x40006cff20 pc=0x60e398 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x40006cffd0 sp=0x40006cffb0 pc=0x61a6dc runtime.goexit({}) src/runtime/asm_arm64.s:1222 +0x4 fp=0x40006cffd0 sp=0x40006cffd0 pc=0x896c4 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 135 pkg/sentry/kernel/task_start.go:390 +0xf8