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Ming Lei 5d05426e2d blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx 
blk_mq_run_hw_queues() could be run when there isn't queued request and
after queue is cleaned up, at that time tagset is freed, because tagset
lifetime is covered by driver, and often freed after blk_cleanup_queue()
returns.

So don't touch ->tagset for figuring out current default hctx by the mapping
built in request queue, so use-after-free on tagset can be avoided. Meantime
this way should be fast than retrieving mapping from tagset.

Cc: "yukuai (C)" <yukuai3@huawei.com>
Cc: Jan Kara <jack@suse.cz>
Fixes: b6e68ee82585 ("blk-mq: Improve performance of non-mq IO schedulers with multiple HW queues")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220522122350.743103-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-23 06:28:28 -06:00
..
partitions
block/partitions/ldm: Remove redundant assignments
2022-04-23 07:15:26 -06:00
badblocks.c
block/badblocks: Remove redundant assignments
2022-04-23 07:15:26 -06:00
bdev.c
Merge branch 'akpm' (patches from Andrew)
2022-03-22 16:11:53 -07:00
bfq-cgroup.c
bfq: Make sure bfqg for which we are queueing requests is online
2022-04-17 19:34:32 -06:00
bfq-iosched.c
bfq: Remove bfq_requeue_request_body()
2022-05-19 06:52:36 -06:00
bfq-iosched.h
bfq: Relax waker detection for shared queues
2022-05-19 06:52:33 -06:00
bfq-wf2q.c
block, bfq: cleanup bfq_bfqq_to_bfqg()
2022-02-18 06:13:00 -07:00
bio-integrity.c
for-5.18/block-2022-03-18
2022-03-21 16:48:55 -07:00
bio.c
block: allow passing a NULL bdev to bio_alloc_clone/bio_init_clone
2022-05-04 18:29:52 -06:00
blk-cgroup-fc-appid.c
blk-cgroup: move blkcg_{get,set}_fc_appid out of line
2022-05-02 14:06:20 -06:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
block: partition include/linux/blk-cgroup.h
2022-02-11 10:02:41 -07:00
blk-cgroup.c
blk-cgroup: delete rcu_read_lock_held() WARN_ON_ONCE()
2022-05-18 16:32:00 -06:00
blk-cgroup.h
blk-cgroup: always terminate io.stat lines
2022-05-17 06:11:17 -06:00
blk-core.c
block: cleanup the VM accounting in submit_bio
2022-05-16 11:37:50 -06:00
blk-crypto-fallback.c
block: remove superfluous calls to blkcg_bio_issue_init
2022-05-04 18:29:52 -06:00
blk-crypto-internal.h
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-crypto-profile.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-crypto-sysfs.c
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-crypto.c
blk-crypto: show crypto capabilities in sysfs
2022-02-28 06:40:23 -07:00
blk-flush.c
block: pass a block_device and opf to bio_init
2022-02-02 07:49:59 -07:00
blk-ia-ranges.c
block: fix memory leak in disk_register_independent_access_ranges
2022-01-23 09:13:09 -07:00
blk-integrity.c
blk-crypto: remove blk_crypto_unregister()
2021-11-29 06:38:51 -07:00
blk-ioc.c
block: restore the old set_task_ioprio() behaviour wrt PF_EXITING
2022-03-28 06:34:11 -06:00
blk-iocost.c
blk-cgroup: always terminate io.stat lines
2022-05-17 06:11:17 -06:00
blk-iolatency.c
blk-cgroup: always terminate io.stat lines
2022-05-17 06:11:17 -06:00
blk-ioprio.c
block: partition include/linux/blk-cgroup.h
2022-02-11 10:02:41 -07:00
blk-ioprio.h
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-lib.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
blk-map.c
block/blk-map: Remove redundant assignment
2022-04-23 07:15:26 -06:00
blk-merge.c
for-5.18/write-streams-2022-03-18
2022-03-26 11:51:46 -07:00
blk-mq-cpumap.c
blk-mq: remove the calling of local_memory_node()
2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
block: Cleanup license notice
2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
blk-mq-debugfs.h
blk-mq: manage hctx map via xarray
2022-03-08 19:39:38 -07:00
blk-mq-pci.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-rdma.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-sched.c
block: limit request dispatch loop duration
2022-03-17 20:31:43 -06:00
blk-mq-sched.h
block: move blk_mq_sched_assign_ioc to blk-ioc.c
2021-11-29 06:41:29 -07:00
blk-mq-sysfs.c
blk-mq: prepare for implementing hctx table via xarray
2022-03-08 17:57:19 -07:00
blk-mq-tag.c
blk-mq: manage hctx map via xarray
2022-03-08 19:39:38 -07:00
blk-mq-tag.h
blk-mq: Delete busy_iter_fn
2021-12-06 13:18:47 -07:00
blk-mq-virtio.c
blk-mq: Fix typo in comment
2020-03-17 20:55:21 +01:00
blk-mq.c
blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx
2022-05-23 06:28:28 -06:00
blk-mq.h
blk-mq: manage hctx map via xarray
2022-03-08 19:39:38 -07:00
blk-pm.c
scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()
2021-12-22 23:38:29 -05:00
blk-pm.h
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
rq-qos: fix missed wake-ups in rq_qos_throttle try two
2021-06-08 15:12:57 -06:00
blk-rq-qos.h
block: fix rq-qos breakage from skipping rq_qos_done_bio()
2022-03-14 14:23:13 -06:00
blk-settings.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
blk-stat.c
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-stat.h
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-sysfs.c
SCSI misc on 20220324
2022-03-24 19:37:53 -07:00
blk-throttle.c
blk-throttle: Set BIO_THROTTLED when bio has been throttled
2022-05-17 19:32:10 -06:00
blk-throttle.h
block: cancel all throttled bios in del_gendisk()
2022-03-18 09:57:56 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: prevent NULL pointer dereference in wb_timer_fn
2021-10-19 06:13:41 -06:00
blk-wbt.h
blk-wbt: remove wbt_track stub
2022-03-31 12:58:38 -06:00
blk-zoned.c
SCSI misc on 20220324
2022-03-24 19:37:53 -07:00
blk.h
block: refactor discard bio size limiting
2022-04-17 19:49:59 -06:00
bounce.c
block: remove superfluous calls to blkcg_bio_issue_init
2022-05-04 18:29:52 -06:00
bsg-lib.c
block: remove the gendisk argument to blk_execute_rq
2021-11-29 06:41:29 -07:00
bsg.c
scsi: bsg: Fix device unregistration
2021-09-14 00:22:15 -04:00
disk-events.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
elevator.c
for-5.18/block-2022-03-18
2022-03-21 16:48:55 -07:00
elevator.h
block: move elevator.h to block/
2021-10-18 06:17:01 -06:00
fops.c
block: ignore RWF_HIPRI hint for sync dio
2022-05-02 10:07:42 -06:00
genhd.c
block: remove queue_discard_alignment
2022-04-17 19:49:59 -06:00
holder.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
ioctl.c
block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD
2022-04-17 19:49:59 -06:00
ioprio.c
for-5.17/block-2022-01-11
2022-01-12 10:26:52 -08:00
Kconfig
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00
Kconfig.iosched
block: only build the icq tracking code when needed
2021-12-16 10:59:02 -07:00
kyber-iosched.c
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
Makefile
blk-cgroup: move blkcg_{get,set}_fc_appid out of line
2022-05-02 14:06:20 -06:00
mq-deadline.c
block: fix async_depth sysfs interface for mq-deadline
2022-01-20 10:54:02 -07:00
opal_proto.h
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
sed-opal.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
t10-pi.c
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00