Dm_clone also has the same UAF problem when dm_resume() and dm_destroy() are concurrent.
Therefore, canceling timer again in clone_dtr(). Fixes: 7431b7835f554 (dm: add clone target) Signed-off-by: Luo Meng <[email protected]> --- drivers/md/dm-clone-target.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm-clone-target.c b/drivers/md/dm-clone-target.c index 2f1cc66d2641..29e0b85eeaf0 100644 --- a/drivers/md/dm-clone-target.c +++ b/drivers/md/dm-clone-target.c @@ -1958,6 +1958,7 @@ static void clone_dtr(struct dm_target *ti) mempool_exit(&clone->hydration_pool); dm_kcopyd_client_destroy(clone->kcopyd_client); + cancel_delayed_work_sync(&clone->waker); destroy_workqueue(clone->wq); hash_table_exit(clone); dm_clone_metadata_close(clone->cmd); -- 2.31.1 -- dm-devel mailing list [email protected] https://listman.redhat.com/mailman/listinfo/dm-devel
