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Ming Lei 0e7807281d block: fix kobject leak in blk_unregister_queue 
[ Upstream commit 3051247e4faa32a3d90c762a243c2c62dde310db ]

The kobject for the queue, `disk->queue_kobj`, is initialized with a
reference count of 1 via `kobject_init()` in `blk_register_queue()`.
While `kobject_del()` is called during the unregister path to remove
the kobject from sysfs, the initial reference is never released.

Add a call to `kobject_put()` in `blk_unregister_queue()` to properly
decrement the reference count and fix the leak.

Fixes: 2bd85221a6 ("block: untangle request_queue refcounting from sysfs")
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250711083009.2574432-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 21033b49cf094ebd9c545ea7b9bed04d084ce84d)
 		2025-07-28 15:19:05 +08:00
..
partitions block: fix conversion of GPT partition name to 7-bit 2025-03-18 15:20:51 +08:00
Kconfig block: sed-opal: keyring support for SED keys 2023-08-22 11:10:26 -06:00
Kconfig.iosched block: Default to use cgroup support for BFQ 2023-01-30 09:42:42 -07:00
Makefile block: move the code to do early boot lookup of block devices to block/ 2023-06-05 10:57:40 -06:00
badblocks.c
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bdev.c treewide: mark stuff as __ro_after_init 2025-02-24 17:12:56 +08:00
bfq-cgroup.c blkcg: Restructure blkg_conf_prep() and friends 2023-04-13 06:46:49 -06:00
bfq-iosched.c block, bfq: fix waker_bfqq UAF after bfq_split_bfqq() 2025-01-19 12:48:46 +08:00
bfq-iosched.h block, bfq: remove BFQ_WEIGHT_LEGACY_DFL 2023-04-06 16:17:32 -06:00
bfq-wf2q.c block, bfq: inject I/O to underutilized actuators 2023-01-29 15:18:33 -07:00
bio-integrity.c block: initialize integrity buffer to zero before writing it to media 2024-12-10 20:39:35 +08:00
bio.c scsi: sd_zbc: block: Respect bio vector limits for REPORT ZONES buffer 2025-05-26 10:36:22 +08:00
blk-cgroup-fc-appid.c block: Replace all non-returning strlcpy with strscpy 2023-06-01 09:13:31 -06:00
blk-cgroup-rwstat.c Revert "blk-cgroup: pin the gendisk in struct blkcg_gq" 2023-02-14 14:24:09 -07:00
blk-cgroup-rwstat.h
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blk-cgroup.c blk-cgroup: improve policy registration error handling 2025-04-23 11:13:55 +08:00
blk-cgroup.h block: fix q->blkg_list corruption during disk rebind 2024-04-17 11:19:28 +02:00
blk-core.c block: Fix where bio IO priority gets set 2024-12-10 20:41:39 +08:00
blk-crypto-fallback.c blk-crypto: dynamically allocate fallback profile 2023-08-18 15:00:39 -06:00
blk-crypto-internal.h blk-crypto: remove blk_crypto_insert_cloned_request() 2023-03-16 09:35:09 -06:00
blk-crypto-profile.c blk-crypto: use dynamic lock class for blk_crypto_profile::lock 2023-07-05 16:36:12 -06:00
blk-crypto-sysfs.c block: make kobj_type structures constant 2023-02-09 09:38:16 -07:00
blk-crypto.c blk-crypto: make blk_crypto_evict_key() more robust 2023-03-16 09:35:09 -06:00
blk-flush.c block: fix request.queuelist usage in flush 2024-12-10 20:26:46 +08:00
blk-ia-ranges.c block: make kobj_type structures constant 2023-02-09 09:38:16 -07:00
blk-integrity.c block: remove the blk_flush_integrity call in blk_integrity_unregister 2024-12-10 20:41:14 +08:00
blk-ioc.c blk-ioc: fix recursive spin_lock/unlock_irq() in ioc_clear_queue() 2023-06-07 07:51:00 -06:00
blk-iocost.c blk-iocost: Avoid using clamp() on inuse in __propagate_weights() 2024-12-23 21:10:05 +08:00
blk-iolatency.c block: fix bad lockdep annotation in blk-iolatency 2023-08-10 17:24:53 -06:00
blk-ioprio.c blk-ioprio: Introduce promote-to-rt policy 2023-06-06 22:26:26 -06:00
blk-ioprio.h blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit 2022-09-26 19:09:31 -06:00
blk-lib.c blk-lib: fix blkdev_issue_secure_erase 2022-09-15 00:25:17 -06:00
blk-map.c block: fix sanity checks in blk_rq_map_user_bvec 2024-12-10 20:43:35 +08:00
blk-merge.c block: fix bio_split_rw_at to take zone_write_granularity into account 2024-12-10 20:44:25 +08:00
blk-mq-cpumap.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-debugfs-zoned.c
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blk-mq-debugfs.c blk-mq: fix potential io hang by wrong 'wake_batch' 2023-06-12 09:55:53 -06:00
blk-mq-debugfs.h
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blk-mq-pci.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-sched.c blk-mq: cleanup __blk_mq_sched_dispatch_requests 2023-04-13 06:57:18 -06:00
blk-mq-sched.h blk-mq: make sure elevator callbacks aren't called for passthrough request 2023-05-18 19:42:54 -06:00
blk-mq-sysfs.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq-tag.c block: Fix lockdep warning in blk_mq_mark_tag_wait 2024-12-10 20:40:47 +08:00
blk-mq-virtio.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-mq.c block: avoid to reuse `hctx` not removed from cpuhp callback list 2025-01-03 15:27:49 +08:00
blk-mq.h block: fix ordering between checking BLK_MQ_S_STOPPED request adding 2024-12-10 20:45:07 +08:00
blk-pm.c blk-mq: include <linux/blk-mq.h> in block/blk-mq.h 2023-04-13 06:52:29 -06:00
blk-pm.h
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blk-rq-qos.c blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race 2024-12-10 20:42:56 +08:00
blk-rq-qos.h blk-iolatency: s/blkcg_rq_qos/iolat_rq_qos/ 2023-04-13 06:46:49 -06:00
blk-settings.c block: Clear zone limits for a non-zoned stacked queue 2024-04-03 15:28:20 +02:00
blk-stat.c block: prevent division by zero in blk_rq_stat_sum() 2024-04-13 13:07:37 +02:00
blk-stat.h
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blk-sysfs.c block: fix kobject leak in blk_unregister_queue 2025-07-28 15:19:05 +08:00
blk-throttle.c blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!" 2023-12-20 17:01:55 +01:00
blk-throttle.h blk-throttle: print signed value 'carryover_bytes/ios' for user 2023-08-30 10:15:01 -06:00
blk-timeout.c
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blk-wbt.c blk-wbt: Fix detection of dirty-throttled tasks 2024-02-23 09:25:16 +01:00
blk-wbt.h blk-wbt: don't create wbt sysfs entry if CONFIG_BLK_WBT is disabled 2023-06-26 09:53:36 -06:00
blk-zoned.c Merge branch '6.5/scsi-staging' into 6.5/scsi-fixes 2023-07-11 12:15:15 -04:00
blk.h block: support to account io_ticks precisely 2024-12-10 20:25:49 +08:00
bounce.c
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bsg-lib.c scsi: replace the fmode_t argument to ->sg_io_fn with a simple bool 2023-06-12 08:04:04 -06:00
bsg.c SCSI misc on 20230629 2023-06-30 11:57:07 -07:00
disk-events.c block: fix kernel-doc for disk_force_media_change() 2023-09-26 00:43:34 -06:00
early-lookup.c block: don't return -EINVAL for not found names in devt_from_devname 2023-06-22 09:09:33 -06:00
elevator.c block: Fix elevator_get_default() checking for NULL q->tag_set 2024-12-10 20:43:48 +08:00
elevator.h blk-mq: pass a flags argument to elevator_type->insert_requests 2023-04-13 06:52:30 -06:00
fops.c block: don't revert iter for -EIOCBQUEUED 2025-02-18 11:53:09 +08:00
genhd.c block: retry call probe after request_module in blk_request_module 2025-02-10 01:59:56 +08:00
holder.c block: don't allow a disk link holder to itself 2022-11-16 15:19:56 -07:00
ioctl.c block: fix integer overflow in BLKSECDISCARD 2025-02-05 15:10:32 +08:00
ioprio.c scsi: block: Improve ioprio value validity checks 2023-06-16 12:04:30 -04:00
kyber-iosched.c blk-mq: pass a flags argument to elevator_type->insert_requests 2023-04-13 06:52:30 -06:00
mq-deadline.c block/mq-deadline: Fix the tag reservation code 2024-12-10 20:39:36 +08:00
opal_proto.h block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:19:12 -04:00
sed-opal.c block: sed-opal: avoid possible wrong address reference in read_sed_opal_key() 2024-12-10 20:26:46 +08:00
t10-pi.c
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