panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6aab14] goroutine 180 gp=0x400078c540 m=13 mp=0x40008ae008 [running]: panic({0xd0d720?, 0x1d293d0?}) GOROOT/src/runtime/panic.go:779 +0x140 fp=0x40008bd610 sp=0x40008bd560 pc=0x4bc60 runtime.panicmem(...) GOROOT/src/runtime/panic.go:261 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:881 +0x308 fp=0x40008bd670 sp=0x40008bd610 pc=0x66f58 gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).OnCorkOptionSet(0x40008e2708, 0xd8?) pkg/tcpip/transport/tcp/endpoint.go:1766 +0x74 fp=0x40008bd6c0 sp=0x40008bd680 pc=0x6aab14 gvisor.dev/gvisor/pkg/tcpip.(*SocketOptions).SetCorkOption(0x116b308?, 0x0?) pkg/tcpip/socketops.go:474 +0x6c fp=0x40008bd6e0 sp=0x40008bd6c0 pc=0x26f78c gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptTCP(0x40008bd7c8?, {0x116b308?, 0x40008e6000?}, {0xffff214ca008, 0x40008e2708}, 0x3, {0x40007ad3bc, 0x4, 0x40007cf008?}) pkg/sentry/socket/netstack/netstack.go:2015 +0x1b8 fp=0x40008bd720 sp=0x40008bd6e0 pc=0x7324f8 gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x1d2de60?, {0x116b308?, 0x40008e6000?}, {0xffff214ca008?, 0x40008e2708?}, 0x40007ad3bc?, 0x4?, {0x40007ad3bc?, 0x1159b28?, 0x40007aca88?}) pkg/sentry/socket/netstack/netstack.go:1765 +0xd0 fp=0x40008bd780 sp=0x40008bd720 pc=0x731440 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0x40008e6000, 0x40007aca88?, 0x6?, 0x3?, {0x40007ad3bc, 0x4?, 0x90?}) pkg/sentry/socket/netstack/netstack.go:611 +0x228 fp=0x40008bd830 sp=0x40008bd780 pc=0x72b298 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0x40007aca88, 0x0?, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x250 fp=0x40008bd910 sp=0x40008bd830 pc=0x7b0310 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40007aca88, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/kernel/task_syscall.go:143 +0x678 fp=0x40008bdc50 sp=0x40008bd910 pc=0x61c008 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40007aca88, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/kernel/task_syscall.go:323 +0x48 fp=0x40008bdcb0 sp=0x40008bdc50 pc=0x61d2d8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x40007aca88, 0xd0, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x2}}) pkg/sentry/kernel/task_syscall.go:283 +0x7c fp=0x40008bdd00 sp=0x40008bdcb0 pc=0x61ce9c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x4000792d00?) pkg/sentry/kernel/task_syscall.go:258 +0x2e8 fp=0x40008bddf0 sp=0x40008bdd00 pc=0x61cbc8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x40008a0090?, 0x40007aca88) pkg/sentry/kernel/task_run.go:263 +0x10b4 fp=0x40008bdf20 sp=0x40008bddf0 pc=0x60fae4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40007aca88, 0x7) pkg/sentry/kernel/task_run.go:98 +0x248 fp=0x40008bdfb0 sp=0x40008bdf20 pc=0x60e398 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:390 +0x2c fp=0x40008bdfd0 sp=0x40008bdfb0 pc=0x61a6dc runtime.goexit({}) src/runtime/asm_arm64.s:1222 +0x4 fp=0x40008bdfd0 sp=0x40008bdfd0 pc=0x896c4 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 88 pkg/sentry/kernel/task_start.go:390 +0xf8