panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x80b228] goroutine 264 [running]: gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0x0) pkg/sentry/vfs/file_description.go:161 +0x48 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SocketPair(0xc000193500, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/sys_socket.go:251 +0x379 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000193500, 0x35, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0x85, 0x340, ...) pkg/sentry/kernel/task_syscall.go:170 +0x44e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000193500, 0x35, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0x407b4a, 0xc000193daf) pkg/sentry/kernel/task_syscall.go:305 +0xb5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000193500, 0x35, 0x1, 0x5, 0x0, 0x0, 0x0, 0x0, 0xc000807cd0, 0xe7eef6) pkg/sentry/kernel/task_syscall.go:265 +0x10a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000193500, 0x2, 0xc0001ce000) pkg/sentry/kernel/task_syscall.go:240 +0x1e8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc000193500, 0x14dcee0, 0x0) pkg/sentry/kernel/task_run.go:258 +0x16a5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000193500, 0x2b) pkg/sentry/kernel/task_run.go:92 +0x321 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:315 +0x19e