1 files changed, 2 insertions, 0 deletions
diff --git a/block.c b/block.c
index 2ac7406c77..f9cf05ddcf 100644
--- a/block.c
+++ b/block.c
@@ -2973,6 +2973,8 @@ static void bdrv_child_free(BdrvChild *child)
 {
     assert(!child->bs);
     GLOBAL_STATE_CODE();
+    GRAPH_RDLOCK_GUARD_MAINLOOP();
+
     assert(!child->next.le_prev); /* not in children list */
 
     g_free(child->name);