Commit e781573e authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: warn about unhandled opcode 



Now that we have all the opcodes handled in terms of command prep and
SQE reuse, add a printk_once() to warn about any potentially new and
unhandled ones.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d625c6ee

fs/io_uring.c

+6 −2
Original line number Diff line number Diff line
@@ -3079,9 +3079,11 @@ static int io_req_defer_prep(struct io_kiocb *req) 
	struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;

	struct io_async_ctx *io = req->io;

	struct iov_iter iter;

	ssize_t ret;

	ssize_t ret = 0;



	switch (req->opcode) {

	case IORING_OP_NOP:

		break;

	case IORING_OP_READV:

	case IORING_OP_READ_FIXED:

		/* ensure prep does right import */
@@ -3141,7 +3143,9 @@ static int io_req_defer_prep(struct io_kiocb *req) 
		ret = io_accept_prep(req);

		break;

	default:

		ret = 0;

		printk_once(KERN_WARNING "io_uring: unhandled opcode %d\n",

				req->opcode);

		ret = -EINVAL;

		break;

	}