diff options
-rw-r--r-- | block/qcow2-refcount.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index 8712d8bd54..6151148507 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -96,7 +96,8 @@ static int get_refcount(BlockDriverState *bs, int64_t cluster_index) refcount_table_index = cluster_index >> (s->cluster_bits - REFCOUNT_SHIFT); if (refcount_table_index >= s->refcount_table_size) return 0; - refcount_block_offset = s->refcount_table[refcount_table_index]; + refcount_block_offset = + s->refcount_table[refcount_table_index] & REFT_OFFSET_MASK; if (!refcount_block_offset) return 0; |