io_uring: prep req when do IOSQE_ASYNC (1118591a) · Commits · 戴 / test

Whenever IOSQE_ASYNC is set, requests will be punted to async without getting into io_issue_req() and without proper preparation done (e.g. io_req_defer_prep()). Hence they will be left uninitialised. Prepare them before punting. Signed-off-by:

Pavel Begunkov <asml.silence@gmail.com> Signed-off-by:

Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -4558,11 +4558,15 @@ static void io_queue_sqe(struct io_kiocb req, const struct io_uring_sqe sqe)
		ret = io_req_defer(req, sqe);
		if (ret) {
		if (ret != -EIOCBQUEUED) {
		fail_req:
		io_cqring_add_event(req, ret);
		req_set_fail_links(req);
		io_double_put_req(req);
		}
		} else if (req->flags & REQ_F_FORCE_ASYNC) {
		ret = io_req_defer_prep(req, sqe);
		if (unlikely(ret < 0))
		goto fail_req;
		/*
		* Never try inline submit of IOSQE_ASYNC is set, go straight
		* to async execution.

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