diff --git a/block.c b/block.c
index 19bff4f95c..c7d5aa5254 100644
--- a/block.c
+++ b/block.c
@@ -2774,14 +2774,16 @@ static void bdrv_attach_child_common_abort(void *opaque)
     }
 
     if (bdrv_child_get_parent_aio_context(child) != s->old_parent_ctx) {
-        GSList *ignore = g_slist_prepend(NULL, child);
+        GSList *ignore;
 
+        /* No need to ignore `child`, because it has been detached already */
+        ignore = NULL;
         child->klass->can_set_aio_ctx(child, s->old_parent_ctx, &ignore,
                                       &error_abort);
         g_slist_free(ignore);
-        ignore = g_slist_prepend(NULL, child);
-        child->klass->set_aio_ctx(child, s->old_parent_ctx, &ignore);
 
+        ignore = NULL;
+        child->klass->set_aio_ctx(child, s->old_parent_ctx, &ignore);
         g_slist_free(ignore);
     }