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Yu Kuai 5f1eb5f737 block, bfq: protect 'bfqd->queued' by 'bfqd->lock' 
commit 181490d5321806e537dc5386db5ea640b826bf78 upstream.

If bfq_schedule_dispatch() is called from bfq_idle_slice_timer_body(),
then 'bfqd->queued' is read without holding 'bfqd->lock'. This is
wrong since it can be wrote concurrently.

Fix the problem by holding 'bfqd->lock' in such case.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220513023507.2625717-2-yukuai3@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Khazhy Kumykov <khazhy@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-10 17:46:54 +01:00
..
partitions
partitions/aix: append null character to print data from disk
2018-07-27 09:17:41 -06:00
badblocks.c
badblocks: fix wrong return value in badblocks_set if badblocks are disabled
2017-11-03 11:29:50 -07:00
bfq-cgroup.c
block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()
2020-03-25 08:06:08 +01:00
bfq-iosched.c
block, bfq: protect 'bfqd->queued' by 'bfqd->lock'
2022-11-10 17:46:54 +01:00
bfq-iosched.h
block, bfq: fix use after free in bfq_bfqq_expire
2021-12-29 12:20:43 +01:00
bfq-wf2q.c
block, bfq: fix use after free in bfq_bfqq_expire
2021-12-29 12:20:43 +01:00
bio-integrity.c
block: bio-integrity: Advance seed correctly for larger interval sizes
2022-02-08 18:23:14 +01:00
bio.c
block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
2022-06-06 08:24:21 +02:00
blk-cgroup.c
bdi: use bdi_dev_name() to get device name
2021-08-08 08:54:29 +02:00
blk-core.c
block: split .sysfs_lock into two locks
2021-03-04 09:39:30 +01:00
blk-exec.c
blk-mq-sched: remove unused 'can_block' arg from blk_mq_sched_insert_request
2018-01-17 09:49:21 -07:00
blk-flush.c
block: Fix fsync always failed if once failed
2022-03-08 19:04:08 +01:00
blk-integrity.c
block drivers/block: Use octal not symbolic permissions
2018-05-24 13:38:59 -06:00
blk-ioc.c
block: Fix use-after-free issue accessing struct io_cq
2020-04-17 10:48:41 +02:00
blk-iolatency.c
blk-iolatency: Fix inflight count imbalances and IO hangs on offline
2022-06-14 16:59:30 +02:00
blk-lib.c
block: fix 32 bit overflow in __blkdev_issue_discard()
2020-02-01 09:37:12 +00:00
blk-map.c
block: fix memleak when __blk_rq_map_user_iov() is failed
2020-01-12 12:17:22 +01:00
blk-merge.c
block: don't merge across cgroup boundaries if blkcg is enabled
2022-04-15 14:14:41 +02:00
blk-mq-cpumap.c
blk-mq: don't keep offline CPUs mapped to hctx 0
2018-04-10 08:38:46 -06:00
blk-mq-debugfs-zoned.c
block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n
2018-07-09 09:07:52 -06:00
blk-mq-debugfs.c
block, scsi: Change the preempt-only flag into a counter
2019-08-04 09:30:57 +02:00
blk-mq-debugfs.h
block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n
2018-07-09 09:07:52 -06:00
blk-mq-pci.c
blk-mq: code clean-up by adding an API to clear set->mq_map
2018-07-09 09:07:53 -06:00
blk-mq-rdma.c
…
blk-mq-sched.c
blk-mq: order adding requests to hctx->dispatch and checking SCHED_RESTART
2020-09-03 11:24:26 +02:00
blk-mq-sched.h
block: mq-deadline: Fix write completion handling
2019-01-13 09:51:07 +01:00
blk-mq-sysfs.c
block: split .sysfs_lock into two locks
2021-03-04 09:39:30 +01:00
blk-mq-tag.c
blk-mq: Allow blocking queue tag iter callbacks
2018-09-25 20:17:59 -06:00
blk-mq-tag.h
Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block
2017-11-14 15:32:19 -08:00
blk-mq-virtio.c
…
blk-mq.c
blk-mq: Swap two calls in blk_mq_exit_queue()
2021-05-22 10:59:46 +02:00
blk-mq.h
blk-mq: free hw queue's resource in hctx's release handler
2019-09-16 08:22:13 +02:00
blk-rq-qos.c
blk-wbt: fix performance regression in wbt scale_up/scale_down
2019-10-17 13:45:16 -07:00
blk-rq-qos.h
blk-rq-qos: fix first node deletion of rq_qos_del()
2019-10-29 09:20:09 +01:00
blk-settings.c
blk-settings: align max_sectors on "logical_block_size" boundary
2021-03-04 09:39:51 +01:00
blk-softirq.c
block: fix timeout changes for legacy request drivers
2018-06-19 11:27:18 -06:00
blk-stat.c
blk-stat: export helpers for modifying blk_rq_stat
2018-07-09 09:07:54 -06:00
blk-stat.h
block: deactivate blk_stat timer in wbt_disable_default()
2019-01-13 09:51:06 +01:00
blk-sysfs.c
block: don't delete queue kobject before its children
2022-04-15 14:14:43 +02:00
blk-tag.c
for-linus-20180616
2018-06-17 05:37:55 +09:00
blk-throttle.c
blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()
2021-09-26 13:39:49 +02:00
blk-timeout.c
blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE
2018-06-23 10:25:45 -06:00
blk-wbt.c
blk-wbt: make sure throttle is enabled properly
2021-07-20 16:15:48 +02:00
blk-wbt.h
blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()
2021-07-20 16:15:48 +02:00
blk-zoned.c
blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN
2021-09-22 11:47:57 +02:00
blk.h
block: split .sysfs_lock into two locks
2021-03-04 09:39:30 +01:00
bounce.c
block: copy ioprio in __bio_clone_fast() and bounce
2018-12-01 09:37:32 +01:00
bsg-lib.c
block/bsg-lib: use PTR_ERR_OR_ZERO to simplify the flow path
2018-08-01 09:13:03 -06:00
bsg.c
block: bsg: move atomic_t ref_count variable to refcount API
2018-08-27 19:17:02 -06:00
cfq-iosched.c
cfq: Suppress compiler warnings about comparisons
2018-08-07 17:57:13 -06:00
cmdline-parser.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_ioctl.c
block/compat_ioctl: fix range check in BLKGETSIZE
2022-04-27 13:39:45 +02:00
deadline-iosched.c
block drivers/block: Use octal not symbolic permissions
2018-05-24 13:38:59 -06:00
elevator.c
block/wbt: fix negative inflight counter when remove scsi device
2022-02-23 11:58:40 +01:00
genhd.c
block: Suppress uevent for hidden device when removed
2021-03-30 14:36:59 +02:00
ioctl.c
block: pass inclusive 'lend' parameter to truncate_inode_pages_range
2018-02-23 15:20:19 -07:00
ioprio.c
block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)
2021-12-14 10:18:07 +01:00
Kconfig
block: introduce blk-iolatency io controller
2018-07-09 09:07:54 -06:00
Kconfig.iosched
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kyber-iosched.c
block: kyber: make kyber more friendly with merging
2018-05-30 10:47:40 -06:00
Makefile
block: introduce blk-iolatency io controller
2018-07-09 09:07:54 -06:00
mq-deadline.c
block: mq-deadline: Fix queue restart handling
2019-10-07 18:57:19 +02:00
noop-iosched.c
…
opal_proto.h
block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled
2017-09-11 09:45:52 -06:00
partition-generic.c
block: fix use-after-free on gendisk
2019-05-31 06:46:18 -07:00
scsi_ioctl.c
block: consistently use GFP_NOIO instead of __GFP_NORECLAIM
2018-05-14 08:55:18 -06:00
sed-opal.c
block: sed-opal: fix IOC_OPAL_ENABLE_DISABLE_MBR
2019-05-31 06:46:24 -07:00
t10-pi.c
block: move dif_prepare/dif_complete functions to block layer
2018-07-30 08:27:02 -06:00