mark task before it runs eagerly

Author: deadlovelll

Modules/_asynciomodule.c

@@ -2190,9 +2190,6 @@ register_task(_PyThreadStateImpl *ts, TaskObj *task)
         assert(task->task_node.prev != NULL);
         return;
     }
-#ifdef Py_GIL_DISABLED
-    _PyObject_SetMaybeWeakref((PyObject *)task);
-#endif
     struct llist_node *head = &ts->asyncio_tasks_head;
     llist_insert_tail(head, &task->task_node);
 }
@@ -2369,6 +2366,11 @@ _asyncio_Task___init___impl(TaskObj *self, PyObject *coro, PyObject *loop,
         return -1;
     }
     _PyThreadStateImpl *ts = (_PyThreadStateImpl *)_PyThreadState_GET();
+#ifdef Py_GIL_DISABLED
+    // This is required so that _Py_TryIncref(self)
+    // works correctly in non-owning threads.
+    _PyObject_SetMaybeWeakref((PyObject *)self);
+#endif
     if (eager_start) {
         PyObject *res = PyObject_CallMethodNoArgs(loop, &_Py_ID(is_running));
         if (res == NULL) {