Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block/block-copy.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/block-copy.c b/block/block-copy.c
index f7428a7c08..5e80569bb8 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -437,8 +437,8 @@ static int block_copy_block_status(BlockCopyState *s,
int64_t offset,
BlockDriverState *base;
int ret;
- if (s->skip_unallocated && s->source->bs->backing) {
- base = s->source->bs->backing->bs;
+ if (s->skip_unallocated) {
+ base = bdrv_backing_chain_next(s->source->bs);
} else {
base = NULL;
}