From: Omar Sandoval <redacted>

blk_alloc_queue_node() already allocates q->stats, so
blk_mq_init_allocated_queue() is overwriting it with a new allocation.

Fixes: a83b576c9c25 ("block: fix stacked driver stats init and free")
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Omar Sandoval <redacted>
---
 block/blk-mq.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 7df9dbfab022..00eeef31db30 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c

@@ -2212,10 +2212,6 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
 	/* mark the queue as mq asap */
 	q->mq_ops = set->ops;
 
-	q->stats = blk_alloc_queue_stats();
-	if (!q->stats)
-		goto err_exit;
-
 	q->poll_cb = blk_stat_alloc_callback(blk_mq_poll_stats_fn,
 					     blk_stat_rq_ddir, 2, q);
 	if (!q->poll_cb)

-- 
2.12.1