[PATCH 5.15 82/86] io_uring/io-wq: free worker if task_work creation is canceled

From: Jens Axboe axboe@kernel.dk

commit af82425c6a2d2f347c79b63ce74fca6dc6be157f upstream.

If we cancel the task_work, the worker will never come into existance. As this is the last reference to it, ensure that we get it freed appropriately.

Cc: stable@vger.kernel.org Reported-by: 진호 wnwlsgh98@gmail.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- io_uring/io-wq.c | 1 + 1 file changed, 1 insertion(+)

--- a/io_uring/io-wq.c +++ b/io_uring/io-wq.c @@ -1217,6 +1217,7 @@ static void io_wq_cancel_tw_create(struc

worker = container_of(cb, struct io_worker, create_work); io_worker_cancel_cb(worker); + kfree(worker); } }