panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x69465e] goroutine 168701 [running]: gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0x0) pkg/sentry/vfs/file_description.go:161 +0x3e gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SocketPair(0xc0045a3500, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_socket.go:251 +0x2c8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0045a3500, 0x35, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0xc0002dee90, 0xe0d480, ...) pkg/sentry/kernel/task_syscall.go:170 +0x122 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0045a3500, 0x35, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:305 +0x66 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0045a3500, 0x35, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:265 +0x96 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0045a3500, 0x2, 0xc004a950a0) pkg/sentry/kernel/task_syscall.go:240 +0x15c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0045a3500, 0xf5f8e0, 0x0) pkg/sentry/kernel/task_run.go:258 +0xed5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0045a3500, 0x1448) pkg/sentry/kernel/task_run.go:92 +0x18b created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:315 +0xfe