diff options
| -rw-r--r-- | block/qcow2-cluster.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index 738ff73c1d..cab5f2e6b5 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -716,6 +716,7 @@ int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m) } qcow2_cache_entry_mark_dirty(s->l2_table_cache, l2_table); + assert(l2_index + m->nb_clusters <= s->l2_size); for (i = 0; i < m->nb_clusters; i++) { /* if two concurrent writes happen to the same unallocated cluster * each write allocates separate cluster and writes data concurrently. |