diff options
| author | zhengbin <zhengbin13@huawei.com> | 2019-07-23 16:10:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-08-12 16:15:36 +0200 |
| commit | 73d9c8d4c0017e21e1ff519474ceb1450484dc9a (patch) | |
| tree | 1d557ba1de029f9cb5025e204bd805beea4f0962 /block/blk-mq.c | |
| parent | floppy: fix usercopy direction (diff) | |
| download | linux-73d9c8d4c0017e21e1ff519474ceb1450484dc9a.tar.xz linux-73d9c8d4c0017e21e1ff519474ceb1450484dc9a.zip | |
blk-mq: Fix memory leak in blk_mq_init_allocated_queue error handling
If blk_mq_init_allocated_queue->elevator_init_mq fails, need to release
the previously requested resources.
Fixes: d34849913819 ("blk-mq-sched: allow setting of default IO scheduler")
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | block/blk-mq.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 6968de9d7402..509f69fdfcf2 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2846,6 +2846,8 @@ static unsigned int nr_hw_queues(struct blk_mq_tag_set *set) struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, struct request_queue *q) { + int ret = -ENOMEM; + /* mark the queue as mq asap */ q->mq_ops = set->ops; @@ -2907,17 +2909,18 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, blk_mq_map_swqueue(q); if (!(set->flags & BLK_MQ_F_NO_SCHED)) { - int ret; - ret = elevator_init_mq(q); if (ret) - return ERR_PTR(ret); + goto err_tag_set; } return q; +err_tag_set: + blk_mq_del_queue_tag_set(q); err_hctxs: kfree(q->queue_hw_ctx); + q->nr_hw_queues = 0; err_sys_init: blk_mq_sysfs_deinit(q); err_poll: |