From: Joseph Qi <qijiang.qj@xxxxxxxxxxxxxxx>
If error occurs, we have to free the allocated callback in
blk_mq_init_allocated_queue to avoid memory leaking.
Fixes: 34dbad5d26e2 ("blk-stat: convert to callback-based statistics reporting")
Signed-off-by: Joseph Qi <qijiang.qj@xxxxxxxxxxxxxxx>
---
block/blk-mq.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index f2224ffd..50b5d7b 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2273,7 +2273,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
q->queue_ctx = alloc_percpu(struct blk_mq_ctx);
if (!q->queue_ctx)
- goto err_exit;
+ goto err_poll_cb;
/* init q->mq_kobj and sw queues' kobjects */
blk_mq_sysfs_init(q);
@@ -2346,6 +2346,8 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
kfree(q->queue_hw_ctx);
err_percpu:
free_percpu(q->queue_ctx);
+err_poll_cb:
+ blk_stat_free_callback(q->poll_cb);
err_exit:
q->mq_ops = NULL;
return ERR_PTR(-ENOMEM);
--
1.8.3.1
