diff --git a/libs/binder/TEST_MAPPING b/libs/binder/TEST_MAPPING
index 136bdb0..8ae7e7a 100644
--- a/libs/binder/TEST_MAPPING
+++ b/libs/binder/TEST_MAPPING
@@ -4,6 +4,9 @@
       "name": "binderSafeInterfaceTest"
     },
     {
+      "name": "binderVendorDoubleLoadTest"
+    },
+    {
       "name": "binderDriverInterfaceTest"
     },
     {
diff --git a/libs/binder/ndk/test/Android.bp b/libs/binder/ndk/test/Android.bp
index bb1fe2f..1c5dba3 100644
--- a/libs/binder/ndk/test/Android.bp
+++ b/libs/binder/ndk/test/Android.bp
@@ -67,3 +67,31 @@
     srcs: ["main_server.cpp"],
     gtest: false,
 }
+
+cc_test {
+    name: "binderVendorDoubleLoadTest",
+    vendor: true,
+    srcs: [
+        "binderVendorDoubleLoadTest.cpp",
+    ],
+    static_libs: [
+        "IBinderVendorDoubleLoadTest-cpp",
+        "IBinderVendorDoubleLoadTest-ndk_platform",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libbinder_ndk",
+        "libutils",
+    ],
+    test_suites: ["device-tests"],
+}
+
+aidl_interface {
+    name: "IBinderVendorDoubleLoadTest",
+    // TODO(b/119771576): only vendor is needed
+    vendor_available: true,
+    srcs: [
+        "IBinderVendorDoubleLoadTest.aidl",
+    ],
+}
diff --git a/libs/binder/ndk/test/AndroidTest.xml b/libs/binder/ndk/test/AndroidTest.xml
new file mode 100644
index 0000000..89646f7
--- /dev/null
+++ b/libs/binder/ndk/test/AndroidTest.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Runs binderVendorDoubleLoadTest.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-native" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer"/>
+
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push" value="binderVendorDoubleLoadTest->/data/nativetest/vendor/binderVendorDoubleLoadTest" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/nativetest/vendor" />
+        <option name="module-name" value="binderVendorDoubleLoadTest" />
+    </test>
+</configuration>
+
diff --git a/libs/binder/ndk/test/IBinderVendorDoubleLoadTest.aidl b/libs/binder/ndk/test/IBinderVendorDoubleLoadTest.aidl
new file mode 100644
index 0000000..3a5bd9c
--- /dev/null
+++ b/libs/binder/ndk/test/IBinderVendorDoubleLoadTest.aidl
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+interface IBinderVendorDoubleLoadTest {
+    @utf8InCpp String RepeatString(@utf8InCpp String toRepeat);
+}
diff --git a/libs/binder/ndk/test/binderVendorDoubleLoadTest.cpp b/libs/binder/ndk/test/binderVendorDoubleLoadTest.cpp
new file mode 100644
index 0000000..f72dc36
--- /dev/null
+++ b/libs/binder/ndk/test/binderVendorDoubleLoadTest.cpp
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <BnBinderVendorDoubleLoadTest.h>
+#include <aidl/BnBinderVendorDoubleLoadTest.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <android/binder_ibinder.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <android/binder_stability.h>
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <binder/Stability.h>
+#include <binder/Status.h>
+#include <gtest/gtest.h>
+
+#include <sys/prctl.h>
+
+using namespace android;
+using ::android::base::EndsWith;
+using ::android::base::GetProperty;
+using ::android::base::Split;
+using ::android::binder::Status;
+using ::android::internal::Stability;
+using ::ndk::ScopedAStatus;
+using ::ndk::SharedRefBase;
+using ::ndk::SpAIBinder;
+
+static const std::string kLocalNdkServerName = "NdkServer-local-IBinderVendorDoubleLoadTest";
+static const std::string kRemoteNdkServerName = "NdkServer-remote-IBinderVendorDoubleLoadTest";
+
+class NdkServer : public aidl::BnBinderVendorDoubleLoadTest {
+    ScopedAStatus RepeatString(const std::string& in, std::string* out) override {
+        *out = in;
+        return ScopedAStatus::ok();
+    }
+};
+class CppServer : public BnBinderVendorDoubleLoadTest {
+    Status RepeatString(const std::string& in, std::string* out) override {
+        *out = in;
+        return Status::ok();
+    }
+};
+
+TEST(DoubleBinder, VendorCppCantCallIntoSystem) {
+    Vector<String16> services = defaultServiceManager()->listServices();
+    EXPECT_TRUE(services.empty());
+}
+
+TEST(DoubleBinder, VendorCppCantRegisterService) {
+    sp<CppServer> cppServer = new CppServer;
+    status_t status = defaultServiceManager()->addService(String16("anything"), cppServer);
+    EXPECT_EQ(EX_TRANSACTION_FAILED, status);
+}
+
+TEST(DoubleBinder, CppVendorCantManuallyMarkVintfStability) {
+    // this test also implies that stability logic is turned on in vendor
+    ASSERT_DEATH(
+            {
+                sp<IBinder> binder = new CppServer();
+                Stability::markVintf(binder.get());
+            },
+            "Should only mark known object.");
+}
+
+TEST(DoubleBinder, NdkVendorCantManuallyMarkVintfStability) {
+    // this test also implies that stability logic is turned on in vendor
+    ASSERT_DEATH(
+            {
+                std::shared_ptr<NdkServer> ndkServer = SharedRefBase::make<NdkServer>();
+                AIBinder_markVintfStability(ndkServer->asBinder().get());
+            },
+            "Should only mark known object.");
+}
+
+TEST(DoubleBinder, CallIntoNdk) {
+    for (const std::string& serviceName : {kLocalNdkServerName, kRemoteNdkServerName}) {
+        SpAIBinder binder = SpAIBinder(AServiceManager_checkService(serviceName.c_str()));
+        ASSERT_NE(nullptr, binder.get()) << serviceName;
+        EXPECT_EQ(STATUS_OK, AIBinder_ping(binder.get())) << serviceName;
+
+        std::shared_ptr<aidl::IBinderVendorDoubleLoadTest> server =
+                aidl::IBinderVendorDoubleLoadTest::fromBinder(binder);
+
+        ASSERT_NE(nullptr, server.get()) << serviceName;
+
+        EXPECT_EQ(STATUS_OK, AIBinder_ping(server->asBinder().get()));
+
+        std::string outString;
+        ScopedAStatus status = server->RepeatString("foo", &outString);
+        EXPECT_EQ(STATUS_OK, AStatus_getExceptionCode(status.get())) << serviceName;
+        EXPECT_EQ("foo", outString) << serviceName;
+    }
+}
+
+void initDrivers() {
+    // Explicitly instantiated with the same driver that system would use.
+    // __ANDROID_VNDK__ right now uses /dev/vndbinder by default.
+    ProcessState::initWithDriver("/dev/binder");
+    ProcessState::self()->startThreadPool();
+    ABinderProcess_startThreadPool();
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+
+    if (fork() == 0) {
+        // child process
+
+        prctl(PR_SET_PDEATHSIG, SIGHUP);
+
+        initDrivers();
+
+        // REMOTE SERVERS
+        std::shared_ptr<NdkServer> ndkServer = SharedRefBase::make<NdkServer>();
+        CHECK(STATUS_OK == AServiceManager_addService(ndkServer->asBinder().get(),
+                                                      kRemoteNdkServerName.c_str()));
+
+        // OR sleep forever or whatever, it doesn't matter
+        IPCThreadState::self()->joinThreadPool(true);
+        exit(1);  // should not reach
+    }
+
+    sleep(1);
+
+    initDrivers();
+
+    // LOCAL SERVERS
+    std::shared_ptr<NdkServer> ndkServer = SharedRefBase::make<NdkServer>();
+    AServiceManager_addService(ndkServer->asBinder().get(), kLocalNdkServerName.c_str());
+
+    return RUN_ALL_TESTS();
+}