We are going to reuse bdrv_common_block_status_above in bdrv_is_allocated_above. bdrv_is_allocated_above may be called with include_base == false and still bs == base (for ex. from img_rebase()).
So, support this corner case. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com> --- block/io.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/block/io.c b/block/io.c index df3ecf2430..f05b2e8ecc 100644 --- a/block/io.c +++ b/block/io.c @@ -2431,7 +2431,11 @@ static int coroutine_fn bdrv_co_block_status_above(BlockDriverState *bs, int ret = 0; bool first = true; - assert(include_base || bs != base); + if (!include_base && bs == base) { + *pnum = bytes; + return 0; + } + for (p = bs; include_base || p != base; p = backing_bs(p)) { ret = bdrv_co_block_status(p, want_zero, offset, bytes, pnum, map, file); -- 2.21.0