--- x/block/blk-mq-tag.c
+++ y/block/blk-mq-tag.c
@@ -565,6 +565,7 @@ struct blk_mq_tags *blk_mq_init_tags(uns
 	if (!tags)
 		return NULL;
 
+	INIT_LIST_HEAD(&tags->page_list);
 	tags->nr_tags = total_tags;
 	tags->nr_reserved_tags = reserved_tags;
 	spin_lock_init(&tags->lock);