| commit | c0f3fd2b387448d67ae83c4ce1cc69da375b9186 | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@fb.com> | Tue Aug 02 08:45:44 2016 -0600 |
| committer | Jens Axboe <axboe@fb.com> | Thu Aug 04 14:19:16 2016 -0600 |
| tree | 30fa18a04776d8735fd75d7c7adf9c4eb36d24bf | |
| parent | 6d25ec147e3a71858bed5439c92accd7f739a0a3 [diff] |
blk-mq: fix deadlock in blk_mq_register_disk() error path If we fail registering any of the hardware queues, we call into blk_mq_unregister_disk() with the hotplug mutex already held. Since blk_mq_unregister_disk() attempts to acquire the same mutex, we end up in a less than happy place. Reported-by: Jinpu Wang <jinpu.wang@profitbricks.com> Signed-off-by: Jens Axboe <axboe@fb.com>