diff --git a/bootstat/Android.mk b/bootstat/Android.mk
index 348db88..223450d 100644
--- a/bootstat/Android.mk
+++ b/bootstat/Android.mk
@@ -62,6 +62,8 @@
 LOCAL_C_INCLUDES := $(bootstat_c_includes)
 LOCAL_SHARED_LIBRARIES := $(bootstat_shared_libs)
 LOCAL_SRC_FILES := $(bootstat_lib_src_files)
+# Clang is required because of C++14
+LOCAL_CLANG := true
 
 include $(BUILD_STATIC_LIBRARY)
 
@@ -76,6 +78,8 @@
 LOCAL_C_INCLUDES := $(bootstat_c_includes)
 LOCAL_SHARED_LIBRARIES := $(bootstat_shared_libs)
 LOCAL_SRC_FILES := $(bootstat_lib_src_files)
+# Clang is required because of C++14
+LOCAL_CLANG := true
 
 include $(BUILD_STATIC_LIBRARY)
 
@@ -90,6 +94,8 @@
 LOCAL_C_INCLUDES := $(bootstat_c_includes)
 LOCAL_SHARED_LIBRARIES := $(bootstat_shared_libs)
 LOCAL_SRC_FILES := $(bootstat_lib_src_files)
+# Clang is required because of C++14
+LOCAL_CLANG := true
 
 include $(BUILD_HOST_STATIC_LIBRARY)
 
@@ -105,6 +111,8 @@
 LOCAL_SHARED_LIBRARIES := $(bootstat_shared_libs)
 LOCAL_STATIC_LIBRARIES := libbootstat
 LOCAL_SRC_FILES := $(bootstat_src_files)
+# Clang is required because of C++14
+LOCAL_CLANG := true
 
 include $(BUILD_EXECUTABLE)
 
@@ -119,6 +127,8 @@
 LOCAL_SHARED_LIBRARIES := $(bootstat_shared_libs)
 LOCAL_STATIC_LIBRARIES := libbootstat_debug libgmock
 LOCAL_SRC_FILES := $(bootstat_test_src_files)
+# Clang is required because of C++14
+LOCAL_CLANG := true
 
 include $(BUILD_NATIVE_TEST)
 
@@ -133,5 +143,7 @@
 LOCAL_SHARED_LIBRARIES := $(bootstat_shared_libs)
 LOCAL_STATIC_LIBRARIES := libbootstat_host_debug libgmock_host
 LOCAL_SRC_FILES := $(bootstat_test_src_files)
+# Clang is required because of C++14
+LOCAL_CLANG := true
 
 include $(BUILD_HOST_NATIVE_TEST)
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index 9876e34..85d6c19 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -87,6 +87,7 @@
 #define AID_METRICSD      1043  /* metricsd process */
 #define AID_WEBSERV       1044  /* webservd process */
 #define AID_DEBUGGERD     1045  /* debuggerd unprivileged user */
+#define AID_MEDIA_CODEC   1046  /* mediacodec process */
 
 #define AID_SHELL         2000  /* adb and debug shell user */
 #define AID_CACHE         2001  /* cache access */
@@ -192,6 +193,7 @@
     { "metricsd",      AID_METRICSD },
     { "webserv",       AID_WEBSERV },
     { "debuggerd",     AID_DEBUGGERD, },
+    { "mediacodec",    AID_MEDIA_CODEC, },
 
     { "shell",         AID_SHELL, },
     { "cache",         AID_CACHE, },
diff --git a/metricsd/uploader/metrics_log.cc b/metricsd/uploader/metrics_log.cc
index 39655e6..fcaa8c1 100644
--- a/metricsd/uploader/metrics_log.cc
+++ b/metricsd/uploader/metrics_log.cc
@@ -85,5 +85,6 @@
 }
 
 bool MetricsLog::PopulateSystemProfile(SystemProfileSetter* profile_setter) {
+  CHECK(profile_setter);
   return profile_setter->Populate(uma_proto());
 }
diff --git a/metricsd/uploader/system_profile_cache.cc b/metricsd/uploader/system_profile_cache.cc
index 70f6afd..e6f6617 100644
--- a/metricsd/uploader/system_profile_cache.cc
+++ b/metricsd/uploader/system_profile_cache.cc
@@ -80,6 +80,10 @@
   } else {
     reader.Load();
     auto client = update_engine::UpdateEngineClient::CreateInstance();
+    if (!client) {
+      LOG(ERROR) << "failed to create the update engine client";
+      return false;
+    }
     if (!client->GetChannel(&channel)) {
       LOG(ERROR) << "failed to read the current channel from update engine.";
       return false;
diff --git a/rootdir/init.rc b/rootdir/init.rc
index d322402..e400c85 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -28,6 +28,10 @@
 on init
     sysclktz 0
 
+    # Mix device-specific information into the entropy pool
+    copy /proc/cmdline /dev/urandom
+    copy /default.prop /dev/urandom
+
     # Backward compatibility.
     symlink /system/etc /etc
     symlink /sys/kernel/debug /d