diff options
| author | Ming Lei <ming.lei@redhat.com> | 2025-07-11 16:30:09 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-24 08:56:30 +0200 |
| commit | e8767b89cd8237f5456f8d84134d3b3a9276ca36 (patch) | |
| tree | 60419ad9bb8545e09c41b77cc5b8d5c42c6105f2 | |
| parent | 20648ff4a203b335420438aa28fd9aa86d47cda7 (diff) | |
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>
| -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 0e2520d929e1..6a38f312e385 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -868,4 +868,5 @@ void blk_unregister_queue(struct gendisk *disk) mutex_unlock(&q->sysfs_dir_lock); blk_debugfs_remove(disk); + kobject_put(&disk->queue_kobj); } |