Zijun HuandGreg Kroah-Hartman ffb494f1e7 blk-cgroup: Fix class @block_class's subsystem refcount leakage ...

commit d1248436cb upstream.

blkcg_fill_root_iostats() iterates over @block_class's devices by
class_dev_iter_(init|next)(), but does not end iterating with
class_dev_iter_exit(), so causes the class's subsystem refcount leakage.

Fix by ending the iterating with class_dev_iter_exit().

Fixes: ef45fe470e ("blk-cgroup: show global disk stats in root cgroup io.stat")
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20250105-class_fix-v6-2-3a2f1768d4d4@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-03-13 12:47:07 +01:00

..

partitions

partitions: ldm: remove the initial kernel-doc notation

2025-03-13 12:46:44 +01:00

badblocks.c

…

bfq-cgroup.c

block, bfq: fix uaf for bfqq in bic_set_bfqq()

2023-03-17 08:45:14 +01:00

bfq-iosched.c

block, bfq: fix procress reference leakage for bfqq in merge chain

2024-11-08 16:21:58 +01:00

bfq-iosched.h

bfq: Get rid of __bio_blkcg() usage

2022-06-09 10:21:31 +02:00

bfq-wf2q.c

…

bio-integrity.c

block: initialize integrity buffer to zero before writing it to media

2024-09-12 11:06:41 +02:00

bio.c

block: prevent an integer overflow in bvec_try_merge_hw_page

2024-02-23 08:42:09 +01:00

blk-cgroup-rwstat.c

…

blk-cgroup-rwstat.h

…

blk-cgroup.c

blk-cgroup: Fix class @block_class's subsystem refcount leakage

2025-03-13 12:47:07 +01:00

blk-core.c

block: fix use-after-free of q->q_usage_counter

2023-10-10 21:53:36 +02:00

blk-crypto-fallback.c

…

blk-crypto-internal.h

blk-mq: release crypto keyslot before reporting I/O complete

2023-05-17 11:47:32 +02:00

blk-crypto.c

blk-crypto: make blk_crypto_evict_key() more robust

2023-05-17 11:47:32 +02:00

blk-exec.c

…

blk-flush.c

…

blk-integrity.c

block: remove the blk_flush_integrity call in blk_integrity_unregister

2024-09-12 11:06:41 +02:00

blk-ioc.c

…

blk-iocost.c

blk-iocost: Avoid using clamp() on inuse in __propagate_weights()

2024-12-19 18:06:12 +01:00

blk-iolatency.c

blk-iolatency: Fix inflight count imbalances and IO hangs on offline

2022-06-09 10:21:29 +02:00

blk-lib.c

…

blk-map.c

…

blk-merge.c

blk-mq: release crypto keyslot before reporting I/O complete

2023-05-17 11:47:32 +02:00

blk-mq-cpumap.c

…

blk-mq-debugfs-zoned.c

…

blk-mq-debugfs.c

blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created

2022-08-21 15:15:35 +02:00

blk-mq-debugfs.h

…

blk-mq-pci.c

…

blk-mq-rdma.c

…

blk-mq-sched.c

blk-mq: correct stale comment of .get_budget

2023-03-11 16:39:15 +01:00

blk-mq-sched.h

…

blk-mq-sysfs.c

blk-mq: fix possible memleak when register 'hctx' failed

2023-01-14 10:16:19 +01:00

blk-mq-tag.c

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blk-mq-tag.h

…

blk-mq-virtio.c

…

blk-mq.c

block: fix ordering between checking BLK_MQ_S_STOPPED request adding

2024-12-14 19:48:11 +01:00

blk-mq.h

block: fix ordering between checking BLK_MQ_S_STOPPED request adding

2024-12-14 19:48:11 +01:00

blk-pm.c

…

blk-pm.h

…

blk-rq-qos.c

blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race

2024-10-22 15:39:26 +02:00

blk-rq-qos.h

…

blk-settings.c

block: Clear zone limits for a non-zoned stacked queue

2024-04-13 12:58:07 +02:00

blk-stat.c

block: prevent division by zero in blk_rq_stat_sum()

2024-04-13 12:59:49 +02:00

blk-stat.h

…

blk-sysfs.c

block: introduce zone_write_granularity limit

2024-04-13 12:58:07 +02:00

blk-throttle.c

blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!"

2023-12-20 15:44:31 +01:00

blk-timeout.c

…

blk-wbt.c

blk-wbt: fix that 'rwb->wc' is always set to 1 in wbt_init()

2022-10-30 09:41:19 +01:00

blk-wbt.h

…

blk-zoned.c

…

blk.h

…

bounce.c

…

bsg-lib.c

…

bsg.c

…

cmdline-parser.c

…

elevator.c

…

genhd.c

block: remove the update_bdev parameter to set_capacity_revalidate_and_notify

2025-02-01 18:22:24 +01:00

ioctl.c

block/ioctl: prefer different overflow check

2024-07-05 09:12:33 +02:00

ioprio.c

…

Kconfig

…

Kconfig.iosched

…

keyslot-manager.c

blk-crypto: make blk_crypto_evict_key() more robust

2023-05-17 11:47:32 +02:00

kyber-iosched.c

…

Makefile

…

mq-deadline.c

…

opal_proto.h

block: sed-opal: handle empty atoms when parsing response

2024-03-26 18:21:46 -04:00

scsi_ioctl.c

…

sed-opal.c

block: sed-opal: handle empty atoms when parsing response

2024-03-26 18:21:46 -04:00

t10-pi.c

…