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075a53b78b
linux/block
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Jan Kara 075a53b78b bfq: Make sure bfqg for which we are queueing requests is online 
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>
2022-04-17 19:34:32 -06:00
..
partitions block: remove genhd.h 2022-02-02 07:49:59 -07:00
badblocks.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
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: Get rid of __bio_blkcg() usage 2022-04-17 19:34:29 -06:00
bfq-iosched.h bfq: Get rid of __bio_blkcg() usage 2022-04-17 19:34:29 -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: turn bio_kmalloc into a simple kmalloc wrapper 2022-04-17 19:30:41 -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 for-5.18/block-2022-04-01 2022-04-01 16:20:00 -07:00
blk-cgroup.h block: don't merge across cgroup boundaries if blkcg is enabled 2022-03-14 19:14:37 -06:00
blk-core.c SCSI misc on 20220324 2022-03-24 19:37:53 -07:00
blk-crypto-fallback.c block: turn bio_kmalloc into a simple kmalloc wrapper 2022-04-17 19:30:41 -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 block: partition include/linux/blk-cgroup.h 2022-02-11 10:02:41 -07:00
blk-iolatency.c block: fix rq-qos breakage from skipping rq_qos_done_bio() 2022-03-14 14:23:13 -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 SCSI misc on 20220324 2022-03-24 19:37:53 -07:00
blk-map.c block: turn bio_kmalloc into a simple kmalloc wrapper 2022-04-17 19:30:41 -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
blk-mq-debugfs.c for-5.18/write-streams-2022-03-18 2022-03-26 11:51:46 -07:00
blk-mq-debugfs.h blk-mq: manage hctx map via xarray 2022-03-08 19:39:38 -07:00
blk-mq-pci.c
blk-mq-rdma.c
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 block: don't print I/O error warning for dead disks 2022-04-15 06:33:03 -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 scsi: block: Remove REQ_OP_WRITE_SAME support 2022-02-22 21:11:08 -05:00
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 block: cancel all throttled bios in del_gendisk() 2022-03-18 09:57:56 -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: allow use of per-cpu bio alloc cache by block drivers 2022-04-17 16:49:40 -06:00
bounce.c for-5.18/write-streams-2022-03-18 2022-03-26 11:51:46 -07:00
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: allow using the per-cpu bio cache from bio_alloc_bioset 2022-04-17 16:49:40 -06:00
genhd.c for-5.18/block-2022-04-01 2022-04-01 16:20:00 -07:00
holder.c block: remove genhd.h 2022-02-02 07:49:59 -07:00
ioctl.c block/compat_ioctl: fix range check in BLKGETSIZE 2022-04-15 06:32:40 -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-crypto: show crypto capabilities in sysfs 2022-02-28 06:40:23 -07:00
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