From 31c52c9ce25599b8cf2b0f8e8d3a45e57987301f Mon Sep 17 00:00:00 2001
From: Chris Wailes <chriswailes@google.com>
Date: Thu, 14 Feb 2019 11:20:02 -0800
Subject: [PATCH] Fix loop iteration bug.

This patch fixes a loop iteration bug in the capabilities calculation
code of the Zygote.  This bug was introduced in aosp/804219.

Bug: 124268515
Test: Built
Change-Id: Ic4e3e736c0aa0e2ecaed87ca6f12367be41715f3
---
 core/jni/com_android_internal_os_Zygote.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/jni/com_android_internal_os_Zygote.cpp b/core/jni/com_android_internal_os_Zygote.cpp
index 3012c906df7b6..f83f2d079a17b 100644
--- a/core/jni/com_android_internal_os_Zygote.cpp
+++ b/core/jni/com_android_internal_os_Zygote.cpp
@@ -1115,8 +1115,8 @@ static jlong CalculateCapabilities(JNIEnv* env, jint uid, jint gid, jintArray gi
       RuntimeAbort(env, __LINE__, "Bad gids array");
     }
 
-    for (int gid_index = gids_num; --gids_num >= 0;) {
-      if (native_gid_proxy[gid_index] == AID_WAKELOCK) {
+    for (int gids_index = 0; gids_index < gids_num; ++gids_index) {
+      if (native_gid_proxy[gids_index] == AID_WAKELOCK) {
         gid_wakelock_found = true;
         break;
       }