From 4071d8e2f6c45c1955a811fee757ca2adbe462c1 Mon Sep 17 00:00:00 2001
From: Amit Patankar <amitpatankar@google.com>
Date: Thu, 29 Apr 2021 12:24:18 -0700
Subject: [PATCH] Fix FPE issue with `tf.raw_ops.Reverse`.

PiperOrigin-RevId: 371176973
Change-Id: Ic6d483bfc95313ec2299c2d1c956cfe96c96626c
---
 tensorflow/core/kernels/reverse_op.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tensorflow/core/kernels/reverse_op.cc b/tensorflow/core/kernels/reverse_op.cc
index 5555a141b6c7b..560fac7133667 100644
--- a/tensorflow/core/kernels/reverse_op.cc
+++ b/tensorflow/core/kernels/reverse_op.cc
@@ -155,6 +155,12 @@ class ReverseOp : public OpKernel {
 
   void Compute(OpKernelContext* context) override {
     const Tensor& input = context->input(0);
+    // If input is provided, check to make sure the first dimension is valid.
+    if (input.dims() > 0) {
+      OP_REQUIRES(
+          context, input.dim_size(0) != 0,
+          errors::InvalidArgument("Invalid input first dimension. Found 0."));
+    }
     const Tensor& dims = context->input(1);
 
     if (TensorShapeUtils::IsScalar(input.shape())) {