1 files changed, 1 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c
index 9e17092..5821a4d 100644
--- a/block/io.c
+++ b/block/io.c
@@ -2330,6 +2330,7 @@ int bdrv_flush_all(void)
     int result = 0;
 
     GLOBAL_STATE_CODE();
+    GRAPH_RDLOCK_GUARD_MAINLOOP();
 
     /*
      * bdrv queue is managed by record/replay,