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-rw-r--r--block/commit.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/block/commit.c b/block/commit.c
index a3028b20f3..af6fa68cf3 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -89,6 +89,10 @@ static void commit_complete(BlockJob *job, void *opaque)
int ret = data->ret;
bool remove_commit_top_bs = false;
+ /* Make sure overlay_bs and top stay around until bdrv_set_backing_hd() */
+ bdrv_ref(top);
+ bdrv_ref(overlay_bs);
+
/* Remove base node parent that still uses BLK_PERM_WRITE/RESIZE before
* the normal backing chain can be restored. */
blk_unref(s->base);
@@ -124,6 +128,9 @@ static void commit_complete(BlockJob *job, void *opaque)
if (remove_commit_top_bs) {
bdrv_set_backing_hd(overlay_bs, top, &error_abort);
}
+
+ bdrv_unref(overlay_bs);
+ bdrv_unref(top);
}
static void coroutine_fn commit_run(void *opaque)