Haoze Xie 2957771379 rust: block: fix GenDisk cleanup paths ... GenDiskBuilder::build() still has fallible work after __blk_mq_alloc_disk(), but its error path only recovers the foreign queue data. That leaks the temporary gendisk and request_queue until later teardown. If the caller moved the last Arc<TagSet<T>> into build(), the leaked queue can retain blk-mq state after the tag set is dropped. Fix the pre-registration failure path by dropping the temporary gendisk reference with put_disk() before recovering queue_data, so disk_release() can tear down the owned queue. Also pair GenDisk::drop() with put_disk() after del_gendisk(). Once a Rust GenDisk has been added with device_add_disk(), del_gendisk() only unregisters it; the final gendisk reference still has to be dropped to complete the release path. Fixes: 3253aba340 ("rust: block: introduce `kernel::block::mq` module") Cc: stable@kernel.org Reported-by: Yuan Tan <yuantan098@gmail.com> Reported-by: Xin Liu <bird@lzu.edu.cn> Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Signed-off-by: Haoze Xie <royenheart@gmail.com> Signed-off-by: Ren Wei <n05ec@lzu.edu.cn> Link: https://patch.msgid.link/b70aff9a920cc42110fe5cf454c3099561863519.1780063368.git.royenheart@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>		2026-05-31 19:45:06 -06:00
..
gen_disk.rs	rust: block: fix GenDisk cleanup paths	2026-05-31 19:45:06 -06:00
operations.rs	rust: block: mq: align init_request numa_node arg with C signature	2026-05-27 08:36:07 -06:00
request.rs	rust: block: update ARef and AlwaysRefCounted imports from sync::aref	2025-11-05 18:24:10 -07:00
tag_set.rs	rust: block: mq: use pin_init::zeroed() for tag_set	2026-01-21 07:37:15 -07:00