Ming Lei 5fd7a84a09 blk-mq: protect q->elevator by ->sysfs_lock in blk_mq_elv_switch_none
elevator can be tore down by sysfs switch interface or disk release, so
hold ->sysfs_lock before referring to q->elevator, then potential
use-after-free can be avoided.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220616014401.817001-2-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-16 14:45:15 -06:00
..
2022-05-23 14:04:14 -07:00
2022-05-24 18:30:27 -07:00
2022-05-23 13:56:39 -07:00
2022-03-21 16:48:55 -07:00
2022-06-08 14:04:14 -04:00
2022-06-03 10:14:48 -07:00
2022-05-23 13:56:39 -07:00
2022-03-26 11:51:46 -07:00
2021-12-06 13:18:47 -07:00
2020-03-17 20:55:21 +01:00
2022-03-08 19:39:38 -07:00
2022-03-24 19:37:53 -07:00
2022-03-31 12:58:38 -06:00
2022-03-24 19:37:53 -07:00
2021-09-14 00:22:15 -04:00
2022-02-02 07:49:59 -07:00
2022-03-21 16:48:55 -07:00
2021-10-18 06:17:01 -06:00
2022-05-24 19:55:07 -07:00
2022-02-02 07:49:59 -07:00
2022-01-12 10:26:52 -08:00
2022-03-07 12:48:35 -07:00
2022-02-02 07:49:59 -07:00
2022-03-07 12:48:35 -07:00