Davidlohr Bueso 5dfe611474 block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) ... commit e6a59aac8a upstream. do_each_pid_thread(PIDTYPE_PGID) can race with a concurrent change_pid(PIDTYPE_PGID) that can move the task from one hlist to another while iterating. Serialize ioprio_get to take the tasklist_lock in this case, just like it's set counterpart. Fixes: d69b78ba1d (ioprio: grab rcu_read_lock in sys_ioprio_{set,get}()) Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Link: https://lore.kernel.org/r/20211210182058.43417-1-dave@stgolabs.net Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-12-14 11:32:40 +01:00
..
partitions
badblocks.c
bfq-cgroup.c
bfq-iosched.c	Revert "block, bfq: honor already-setup queue merges"	2021-10-06 15:55:56 +02:00
bfq-iosched.h
bfq-wf2q.c
bio-integrity.c
bio.c	bio: fix page leak bio_add_hw_page failure	2021-09-15 09:50:47 +02:00
blk-cgroup-rwstat.c
blk-cgroup-rwstat.h
blk-cgroup.c	blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd	2021-09-30 10:11:07 +02:00
blk-core.c	blkcg: Remove extra blkcg_bio_issue_init	2021-11-26 10:39:13 +01:00
blk-crypto-fallback.c
blk-crypto-internal.h
blk-crypto.c	blk-crypto: fix check for too-large dun_bytes	2021-09-15 09:50:30 +02:00
blk-exec.c
blk-flush.c	blk-mq: fix is_flush_rq	2021-09-12 08:58:27 +02:00
blk-integrity.c	block: flush the integrity workqueue in blk_integrity_unregister	2021-09-30 10:11:06 +02:00
blk-ioc.c
blk-iocost.c	blk-iocost: fix lockdep warning on blkcg->lock	2021-09-03 10:09:22 +02:00
blk-iolatency.c
blk-lib.c
blk-map.c
blk-merge.c	block: return ELEVATOR_DISCARD_MERGE if possible	2021-09-15 09:50:28 +02:00
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c	block: decode QUEUE_FLAG_HCTX_ACTIVE in debugfs output	2021-10-27 09:56:46 +02:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c	treewide: Change list_sort to use const pointers	2021-09-30 10:11:04 +02:00
blk-mq-sched.h
blk-mq-sysfs.c
blk-mq-tag.c	blk-mq: avoid to iterate over stale request	2021-09-30 10:11:05 +02:00
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c	block: remove inaccurate requeue check	2021-11-18 14:03:58 +01:00
blk-mq.h
blk-pm.c
blk-pm.h
blk-rq-qos.c
blk-rq-qos.h
blk-settings.c
blk-stat.c
blk-stat.h
blk-sysfs.c
blk-throttle.c	blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()	2021-09-26 14:09:01 +02:00
blk-timeout.c
blk-wbt.c
blk-wbt.h
blk-zoned.c	blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN	2021-09-18 13:40:06 +02:00
blk.h	block: bump max plugged deferred size from 16 to 32	2021-11-18 14:03:57 +01:00
bounce.c
bsg-lib.c
bsg.c	scsi: bsg: Remove support for SCSI_IOCTL_SEND_COMMAND	2021-09-18 13:40:11 +02:00
cmdline-parser.c
elevator.c	block: return ELEVATOR_DISCARD_MERGE if possible	2021-09-15 09:50:28 +02:00
genhd.c
ioctl.c
ioprio.c	block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)	2021-12-14 11:32:40 +01:00
Kconfig
Kconfig.iosched
keyslot-manager.c
kyber-iosched.c
Makefile
mq-deadline.c	block: return ELEVATOR_DISCARD_MERGE if possible	2021-09-15 09:50:28 +02:00
opal_proto.h
scsi_ioctl.c
sed-opal.c
t10-pi.c