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blk-mq: Fix memory leak in error handling 

If blk_mq_init_allocated_queue() fails, make sure to free the poll
stat callback struct allocated.

Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jes Sorensen 2019-04-19 16:35:44 -04:00 committed by Jens Axboe
parent fe2008640a
commit 41de54c648
1 changed files with 4 additions and 1 deletions
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5
block/blk-mq.c
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@ -2865,7 +2865,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
goto err_exit;
if (blk_mq_alloc_ctxs(q))
goto err_exit;
goto err_poll;
/* init q->mq_kobj and sw queues' kobjects */
blk_mq_sysfs_init(q);
@ -2929,6 +2929,9 @@ err_hctxs:
kfree(q->queue_hw_ctx);
err_sys_init:
blk_mq_sysfs_deinit(q);
err_poll:
blk_stat_free_callback(q->poll_cb);
q->poll_cb = NULL;
err_exit:
q->mq_ops = NULL;
return ERR_PTR(-ENOMEM);