> The duplicate memory release should be deleted from the implementation > of the callback function "rcu_free_wq". I tried to help with the selection of a better commit message. I have taken another look also at the implementation of the function “destroy_workqueue”. * The function call “destroy_workqueue” can be performed there in an if branch after the statement “wq->rescuer = NULL” was executed. * This data processing is independent from a possible call of the function “call_rcu(&wq->rcu, rcu_free_wq)” in another if branch. Thus it seems that a null pointer is intentionally passed by a data structure member to this callback function on demand. The corresponding call of the function “kfree” can tolerate this special case. Now I find that the proposed change can be inappropriate. Regards, Markus
