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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-04-27 10:11:19 -0700 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-04-27 17:08:40 -0400 |
| commit | 23a601248958fa4142d49294352fe8d1fdf3e509 (patch) | |
| tree | 499d2503eba47bc8a139bba9b83e0160b536c594 /drivers/md | |
| parent | c1d7ecf7ca11d0edd3085262c8597203440d056c (diff) | |
| download | linux-23a601248958fa4142d49294352fe8d1fdf3e509.tar.gz | |
dm rq: check blk_mq_register_dev() return value in dm_mq_init_request_queue()
Otherwise the request-based DM blk-mq request_queue will be put into service without being properly exported via sysfs. Cc: stable@vger.kernel.org Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-rq.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c index 90756a56c4d3..a6e8da9da7a4 100644 --- a/drivers/md/dm-rq.c +++ b/drivers/md/dm-rq.c @@ -809,10 +809,14 @@ int dm_mq_init_request_queue(struct mapped_device *md, struct dm_table *t) dm_init_md_queue(md); /* backfill 'mq' sysfs registration normally done in blk_register_queue */ - blk_mq_register_dev(disk_to_dev(md->disk), q); + err = blk_mq_register_dev(disk_to_dev(md->disk), q); + if (err) + goto out_cleanup_queue; return 0; +out_cleanup_queue: + blk_cleanup_queue(q); out_tag_set: blk_mq_free_tag_set(md->tag_set); out_kfree_tag_set: |