Reviewed-by: Eric Blake <ebl...@redhat.com>
Signed-off-by: Peter Lieven <p...@kamp.de>
---
block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block.c b/block.c
index 3499c90..3bf1163 100644
--- a/block.c
+++ b/block.c
@@ -3266,7 +3266,7 @@ static int64_t coroutine_fn
bdrv_co_get_block_status(BlockDriverState *bs,
if (!(ret & BDRV_BLOCK_DATA)) {
if (bdrv_has_zero_init(bs)) {
ret |= BDRV_BLOCK_ZERO;
- } else {
+ } else if (bs->backing_hd) {
BlockDriverState *bs2 = bs->backing_hd;
int64_t length2 = bdrv_getlength(bs2);
if (length2 >= 0 && sector_num >= (length2 >> BDRV_SECTOR_BITS)) {
--
1.7.9.5
