From b912ed1363b363d587fe1aac9636ce9e9366a775 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 2 Jan 2023 16:49:46 -0700 Subject: [PATCH] io_uring/io-wq: free worker if task_work creation is canceled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- io_uring/io-wq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/io_uring/io-wq.c b/io_uring/io-wq.c index 6031fb319d87..81b5e4462dba 100644 --- a/io_uring/io-wq.c +++ b/io_uring/io-wq.c @@ -1217,6 +1217,7 @@ static void io_wq_cancel_tw_create(struct io_wq *wq) worker = container_of(cb, struct io_worker, create_work); io_worker_cancel_cb(worker); + kfree(worker); } }