Ming Lei 460aa288c5 blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx ...

[ Upstream commit 5d05426e2d ]

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: b6e68ee825 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-06-14 18:36:09 +02:00

..

partitions

block: drop unused includes in <linux/genhd.h>

2022-03-16 14:23:46 +01:00

badblocks.c

…

bdev.c

block: simplify the block device syncing code

2022-04-27 14:38:50 +02:00

bfq-cgroup.c

bfq: Make sure bfqg for which we are queueing requests is online

2022-06-09 10:23:19 +02:00

bfq-iosched.c

bfq: Get rid of __bio_blkcg() usage

2022-06-09 10:23:19 +02:00

bfq-iosched.h

bfq: Get rid of __bio_blkcg() usage

2022-06-09 10:23:19 +02:00

bfq-wf2q.c

block/bfq_wf2q: correct weight to ioprio

2022-04-08 14:23:55 +02:00

bio-integrity.c

block: bio-integrity: Advance seed correctly for larger interval sizes

2022-02-08 18:34:05 +01:00

bio.c

block: fix offset/size check in bio_trim()

2022-04-20 09:34:14 +02:00

blk-cgroup-rwstat.c

…

blk-cgroup-rwstat.h

…

blk-cgroup.c

block: fix bio_clone_blkg_association() to associate with proper blkcg_gq

2022-06-09 10:23:32 +02:00

blk-core.c

block: release rq qos structures for queue without disk

2022-03-23 09:16:41 +01:00

blk-crypto-fallback.c

…

blk-crypto-internal.h

…

blk-crypto.c

…

blk-exec.c

…

blk-flush.c

block: Fix fsync always failed if once failed

2022-01-27 11:05:25 +01:00

blk-integrity.c

block: flush the integrity workqueue in blk_integrity_unregister

2021-09-14 20:03:30 -06:00

blk-ioc.c

…

blk-iocost.c

iocost: don't reset the inuse weight of under-weighted debtors

2022-05-09 09:14:31 +02:00

blk-iolatency.c

blk-iolatency: Fix inflight count imbalances and IO hangs on offline

2022-06-09 10:23:30 +02:00

blk-ioprio.c

…

blk-ioprio.h

…

blk-lib.c

…

blk-map.c

block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern

2022-03-08 19:12:31 +01:00

blk-merge.c

block: don't merge across cgroup boundaries if blkcg is enabled

2022-04-08 14:22:59 +02:00

blk-mq-cpumap.c

…

blk-mq-debugfs-zoned.c

…

blk-mq-debugfs.c

block: decode QUEUE_FLAG_HCTX_ACTIVE in debugfs output

2021-10-04 06:58:39 -06:00

blk-mq-debugfs.h

…

blk-mq-pci.c

…

blk-mq-rdma.c

…

blk-mq-sched.c

block: limit request dispatch loop duration

2022-04-08 14:22:59 +02:00

blk-mq-sched.h

…

blk-mq-sysfs.c

…

blk-mq-tag.c

blk-mq: avoid to iterate over stale request

2021-09-12 19:32:43 -06:00

blk-mq-tag.h

…

blk-mq-virtio.c

…

blk-mq.c

blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

2022-06-14 18:36:09 +02:00

blk-mq.h

blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release()

2021-12-01 09:04:56 +01:00

blk-pm.c

scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume()

2022-01-27 11:04:15 +01:00

blk-pm.h

…

blk-rq-qos.c

…

blk-rq-qos.h

…

blk-settings.c

block: Fix partition check for host-aware zoned block devices

2021-10-27 06:58:01 -06:00

blk-stat.c

…

blk-stat.h

…

blk-sysfs.c

block: don't delete queue kobject before its children

2022-04-08 14:23:07 +02:00

blk-throttle.c

blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()

2021-09-07 08:36:56 -06:00

blk-timeout.c

…

blk-wbt.c

blk-wbt: prevent NULL pointer dereference in wb_timer_fn

2021-11-18 19:16:34 +01:00

blk-wbt.h

…

blk-zoned.c

block: Hold invalidate_lock in BLKRESETZONE ioctl

2021-11-18 19:17:15 +01:00

blk.h

block: bump max plugged deferred size from 16 to 32

2021-11-18 19:16:16 +01:00

bounce.c

…

bsg-lib.c

…

bsg.c

scsi: bsg: Fix device unregistration

2021-09-14 00:22:15 -04:00

disk-events.c

…

elevator.c

block/wbt: fix negative inflight counter when remove scsi device

2022-02-23 12:03:15 +01:00

fops.c

block: hold ->invalidate_lock in blkdev_fallocate

2021-09-24 11:06:58 -06:00

genhd.c

block: Fix the maximum minor value is blk_alloc_ext_minor()

2022-04-08 14:24:11 +02:00

holder.c

block: drop unused includes in <linux/genhd.h>

2022-03-16 14:23:46 +01:00

ioctl.c

block/compat_ioctl: fix range check in BLKGETSIZE

2022-04-27 14:39:02 +02:00

ioprio.c

block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)

2021-12-14 10:57:16 +01:00

Kconfig

…

Kconfig.iosched

…

keyslot-manager.c

…

kyber-iosched.c

kyber: avoid q->disk dereferences in trace points

2021-10-15 21:02:57 -06:00

Makefile

Merge tag 'block-5.15-2021-09-11' of git://git.kernel.dk/linux-block

2021-09-11 10:19:51 -07:00

mq-deadline.c

block: fix async_depth sysfs interface for mq-deadline

2022-01-27 11:05:25 +01:00

opal_proto.h

…

sed-opal.c

…

t10-pi.c

…