WSL2-Linux-Kernel/block
Jan Kara 6ee0868b0c bfq: Make sure bfqg for which we are queueing requests is online
commit 075a53b78b upstream.

Bios queued into BFQ IO scheduler can be associated with a cgroup that
was already offlined. This may then cause insertion of this bfq_group
into a service tree. But this bfq_group will get freed as soon as last
bio associated with it is completed leading to use after free issues for
service tree users. Fix the problem by making sure we always operate on
online bfq_group. If the bfq_group associated with the bio is not
online, we pick the first online parent.

CC: stable@vger.kernel.org
Fixes: e21b7a0b98 ("block, bfq: add full hierarchical scheduling and cgroups support")
Tested-by: "yukuai (C)" <yukuai3@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220401102752.8599-9-jack@suse.cz
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-09 10:23:19 +02:00
..
partitions block: drop unused includes in <linux/genhd.h> 2022-03-16 14:23:46 +01:00
Kconfig
Kconfig.iosched
Makefile
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 blk-cgroup: set blkg iostat after percpu stat aggregation 2022-04-08 14:23:06 +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-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-tag.h
blk-mq-virtio.c
blk-mq.c blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release() 2021-12-01 09:04:56 +01:00
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-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
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
keyslot-manager.c
kyber-iosched.c kyber: avoid q->disk dereferences in trace points 2021-10-15 21:02:57 -06:00
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