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Commit 41de54c6 authored by Jes Sorensen's avatar Jes Sorensen Committed by Jens Axboe
Browse files

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: default avatarJes Sorensen <jsorensen@fb.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent fe200864

block/blk-mq.c

+4 −1
Original line number Diff line number Diff line
@@ -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 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, 
	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);