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	block: Cleanup license notice	2019-01-17 21:21:40 -07:00
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	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	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