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| author | Ming Lei <ming.lei@redhat.com> | 2025-07-11 11:30:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-24 09:53:17 +0300 |
| commit | 21033b49cf094ebd9c545ea7b9bed04d084ce84d (patch) | |
| tree | 3bfdfe7693bc5a335d70d0c10997bb25901eb83b /block | |
| parent | c20dd7e8f359b20fed1bd284c23df1aed8bbb9c6 (diff) | |
| download | linux-21033b49cf094ebd9c545ea7b9bed04d084ce84d.tar.xz | |
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: 2bd85221a625 ("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>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-sysfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 74839f6f2e0c..8d15c73a520b 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -909,4 +909,5 @@ void blk_unregister_queue(struct gendisk *disk) mutex_unlock(&q->sysfs_dir_lock); blk_debugfs_remove(disk); + kobject_put(&disk->queue_kobj); } |