diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 93f9ecedc59f..47bc8fe2b945 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -6474,6 +6474,8 @@ static int io_req_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
 	switch (req->opcode) {
 	case IORING_OP_NOP:
+		if (READ_ONCE(sqe->rw_flags))
+			return -EINVAL;
 		return 0;
 	case IORING_OP_READV:
 	case IORING_OP_READ_FIXED: