panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x2d8 pc=0xa50087] goroutine 78055 gp=0xc000a0d6c0 m=3 mp=0xc0000af008 [running]: panic({0x10e0dc0?, 0x1f3a330?}) GOROOT/src/runtime/panic.go:779 +0x158 fp=0xc001cef680 sp=0xc001cef5d0 pc=0x43cb78 runtime.panicmem(...) GOROOT/src/runtime/panic.go:261 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:881 +0x378 fp=0xc001cef6e0 sp=0xc001cef680 pc=0x456578 gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).OnCorkOptionSet(0xc009a7a708, 0xd8?) pkg/tcpip/transport/tcp/endpoint.go:1766 +0x67 fp=0xc001cef720 sp=0xc001cef6e0 pc=0xa50087 gvisor.dev/gvisor/pkg/tcpip.(*SocketOptions).SetCorkOption(0x150bee8?, 0xf0?) pkg/tcpip/socketops.go:474 +0x24 fp=0xc001cef740 sp=0xc001cef720 pc=0x65abe4 gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptTCP(0xc002bfa008?, {0x150bee8?, 0xc00492a0f0?}, {0x3f63a6d8d858, 0xc009a7a708}, 0x3, {0xc00828893c, 0x4, 0xc001600008?}) pkg/sentry/socket/netstack/netstack.go:2015 +0x135 fp=0xc001cef780 sp=0xc001cef740 pc=0xaca0d5 gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x8359a0?, {0x150bee8?, 0xc00492a0f0?}, {0x3f63a6d8d858?, 0xc009a7a708?}, 0xc008288008?, 0xc001cef870?, {0xc00828893c, 0x4, 0x90}) pkg/sentry/socket/netstack/netstack.go:1765 +0xbc fp=0xc001cef7d8 sp=0xc001cef780 pc=0xac94dc gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0xc00492a0f0, 0xc008288008?, 0x6?, 0x3?, {0xc00828893c, 0x4?, 0x90?}) pkg/sentry/socket/netstack/netstack.go:611 +0x235 fp=0xc001cef880 sp=0xc001cef7d8 pc=0xac3e75 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0xc008288008, 0xc000c29a40?, {{0x3}, {0x6}, {0x3}, {0x20000180}, {0x4}, {0x0}}) pkg/sentry/syscalls/linux/sys_socket.go:551 +0x266 fp=0xc001cef960 sp=0xc001cef880 pc=0xb4e626 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc008288008, 0x36, {{0x3}, {0x6}, {0x3}, {0x20000180}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x673 fp=0xc001cefca0 sp=0xc001cef960 pc=0x9c5433 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc008288008, 0x36, {{0x3}, {0x6}, {0x3}, {0x20000180}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc001cefcf8 sp=0xc001cefca0 pc=0x9c65a5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc008288008, 0x36, {{0x3}, {0x6}, {0x3}, {0x20000180}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc001cefd48 sp=0xc001cefcf8 pc=0x9c62a5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000e82c60?) pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc001cefe30 sp=0xc001cefd48 pc=0x9c6025 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00578e120?, 0xc008288008) pkg/sentry/kernel/task_run.go:263 +0xef7 fp=0xc001ceff48 sp=0xc001cefe30 pc=0x9ba517 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc008288008, 0x79c2) pkg/sentry/kernel/task_run.go:98 +0x1e2 fp=0xc001ceffc0 sp=0xc001ceff48 pc=0x9b8fa2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:390 +0x25 fp=0xc001ceffe0 sp=0xc001ceffc0 pc=0x9c3d25 runtime.goexit({}) src/runtime/asm_amd64.s:1695 +0x1 fp=0xc001ceffe8 sp=0xc001ceffe0 pc=0x478c41 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 77898 pkg/sentry/kernel/task_start.go:390 +0xe5