> The duplicate memory release should be deleted from the implementation > of the callback function "rcu_free_wq". I would find it nicer if you would have extended my simple wording suggestion. 1. Mention conditions: The callback function “rcu_free_wq” could be called after memory was released for “rescuer” already. 2. Specify the desired action: Thus delete a misplaced call of the function “kfree”. 3. Please keep the patch versioning consistent. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=9cb1fd0efd195590b828b9b865421ad345a4a145#n709 Regards, Markus