Remove some new memory leaks from SensorManager

After catching an error in Sensor::unflatten, there are memory leaks
caught by the fuzzer in the same test case.

Test: libsensorserviceaidl_fuzzer with testcase from bug
Bug: 269014004
Change-Id: I509cceb41f56ca117d9475f6f6674244560fe582

2 files changed, 15 insertions, 2 deletions

diff --git a/libs/sensor/ISensorServer.cpp b/libs/sensor/ISensorServer.cpp
index 2278d391b5..e2aac8c2a3 100644
--- a/libs/sensor/ISensorServer.cpp
+++ b/libs/sensor/ISensorServer.cpp
@@ -67,7 +67,11 @@ public:
         v.setCapacity(n);
         while (n) {
             n--;
-            reply.read(s);
+            if(reply.read(s) != OK) {
+                ALOGE("Failed to read reply from getSensorList");
+                v.clear();
+                break;
+            }
             v.add(s);
         }
         return v;
@@ -85,7 +89,11 @@ public:
         v.setCapacity(n);
         while (n) {
             n--;
-            reply.read(s);
+            if(reply.read(s) != OK) {
+                ALOGE("Failed to read reply from getDynamicSensorList");
+                v.clear();
+                break;
+            }
             v.add(s);
         }
         return v;
diff --git a/libs/sensor/SensorManager.cpp b/libs/sensor/SensorManager.cpp
index 27482768f2..8e0ea6ce8c 100644
--- a/libs/sensor/SensorManager.cpp
+++ b/libs/sensor/SensorManager.cpp
@@ -166,6 +166,11 @@ status_t SensorManager::assertStateLocked() {
 
         mSensors = mSensorServer->getSensorList(mOpPackageName);
         size_t count = mSensors.size();
+        if (count == 0) {
+            ALOGE("Failed to get Sensor list");
+            mSensorServer.clear();
+            return UNKNOWN_ERROR;
+        }
         mSensorList =
                 static_cast<Sensor const**>(malloc(count * sizeof(Sensor*)));
         LOG_ALWAYS_FATAL_IF(mSensorList == nullptr, "mSensorList NULL");