diff --git a/fs/io_uring.c b/fs/io_uring.c
index 96255b816d710192095ade0ba1b934785e2365e0..470d50c0b4c3072a015eedd636b8e5e49345d05f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6390,6 +6390,8 @@ static int io_init_req(struct io_ring_ctx *ctx, struct io_kiocb *req,
 	if (unlikely(sqe_flags & ~SQE_VALID_FLAGS))
 		return -EINVAL;
 
+	req->opcode = array_index_nospec(req->opcode, IORING_OP_LAST);
+
 	if ((sqe_flags & IOSQE_BUFFER_SELECT) &&
 	    !io_op_defs[req->opcode].buffer_select)
 		return -EOPNOTSUPP;