From 97957fc420b0d2dc019f4728b2d3611b7305ab91 Mon Sep 17 00:00:00 2001
From: Wei Wang <wvw@google.com>
Date: Mon, 20 Mar 2017 15:13:05 -0700
Subject: [PATCH] libcutils: only change cgroup when fd is initialized

This is to avoid failues on setting non-exist cgroup

Bug: 34193533
Test: on marlin
Change-Id: I619dcba332fda9ec421df811745cf10311beddd3
---
 libcutils/sched_policy.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libcutils/sched_policy.cpp b/libcutils/sched_policy.cpp
index 7e3ad593e..40144cf16 100644
--- a/libcutils/sched_policy.cpp
+++ b/libcutils/sched_policy.cpp
@@ -464,7 +464,7 @@ int set_sched_policy(int tid, SchedPolicy policy)
             break;
         }
 
-        if (add_tid_to_cgroup(tid, fd) != 0) {
+        if (fd > 0 && add_tid_to_cgroup(tid, fd) != 0) {
             if (errno != ESRCH && errno != ENOENT)
                 return -errno;
         }