commit 2627e0f616211c803660b10c52ca8bb489ece253
author Yaowu Xu <yaowu@google.com> Tue Feb 27 16:59:19 2018 -0800
committer Yaowu Xu <yaowu@google.com> Wed Feb 28 04:22:40 2018 +0000
tree 3816443c3b60a1d9467a1312598086788ab5118d
parent d8d2ef1cc6467f78c5c298fd5d585f6e4676c1ef

Validate pointer before reset

BUG=aomedia:1461

Change-Id: I483063a2bb16e236b26aff01c2e81d1753b1e837

av1/common/onyxc_int.h

diff --git a/av1/common/onyxc_int.h b/av1/common/onyxc_int.h
index bde1e78..3059662 100644
--- a/av1/common/onyxc_int.h
+++ b/av1/common/onyxc_int.h
@@ -1176,8 +1176,13 @@
 
   av1_zero_array(cm->above_context[0] + offset_y, width_y);
   if (num_planes > 1) {
-    av1_zero_array(cm->above_context[1] + offset_uv, width_uv);
-    av1_zero_array(cm->above_context[2] + offset_uv, width_uv);
+    if (cm->above_context[1] && cm->above_context[2]) {
+      av1_zero_array(cm->above_context[1] + offset_uv, width_uv);
+      av1_zero_array(cm->above_context[2] + offset_uv, width_uv);
+    } else {
+      aom_internal_error(&cm->error, AOM_CODEC_CORRUPT_FRAME,
+                         "Invalid value of planes");
+    }
   }
 
   av1_zero_array(cm->above_seg_context + mi_col_start, aligned_width);