1 files changed, 4 insertions, 0 deletions
diff --git a/block.c b/block.c
index 3f072f6274..43f648437d 100644
--- a/block.c
+++ b/block.c
@@ -1020,6 +1020,10 @@ int bdrv_commit(BlockDriverState *bs)
         return -EACCES;
     }
 
+    if (bdrv_in_use(bs) || bdrv_in_use(bs->backing_hd)) {
+        return -EBUSY;
+    }
+
     backing_drv = bs->backing_hd->drv;
     ro = bs->backing_hd->read_only;
     strncpy(filename, bs->backing_hd->filename, sizeof(filename));