diff options
| -rw-r--r-- | block/commit.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/commit.c b/block/commit.c index 13143608f8..5cc910f567 100644 --- a/block/commit.c +++ b/block/commit.c @@ -90,7 +90,9 @@ static void commit_complete(BlockJob *job, void *opaque) /* Make sure overlay_bs and top stay around until bdrv_set_backing_hd() */ bdrv_ref(top); - bdrv_ref(overlay_bs); + if (overlay_bs) { + bdrv_ref(overlay_bs); + } /* Remove base node parent that still uses BLK_PERM_WRITE/RESIZE before * the normal backing chain can be restored. */ |