| /* |
| * Copyright (C) 2020 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 <sys/cdefs.h> |
| |
| #if defined(__BIONIC__) |
| |
| #include <gtest/gtest.h> |
| |
| #include <android-base/macros.h> |
| #include <bionic/mte.h> |
| #include "utils.h" |
| |
| __attribute__((no_sanitize("hwaddress"))) |
| static void test_tag_mismatch() { |
| std::unique_ptr<int[]> p = std::make_unique<int[]>(4); |
| p[0] = 1; |
| int* mistagged_p ATTRIBUTE_UNUSED = |
| reinterpret_cast<int*>(reinterpret_cast<uintptr_t>(p.get()) + (1ULL << 56)); |
| { |
| ScopedDisableMTE x; |
| { ScopedDisableMTE y; } |
| #if defined(__aarch64__) |
| volatile int load ATTRIBUTE_UNUSED = *mistagged_p; |
| #endif |
| } |
| #if defined(__aarch64__) |
| if (mte_supported() && running_with_mte()) { |
| EXPECT_DEATH( |
| { |
| volatile int load ATTRIBUTE_UNUSED = *mistagged_p; |
| }, |
| ""); |
| } |
| #endif |
| } |
| |
| TEST(mte_test, ScopedDisableMTE) { |
| // With native_bridge, native and emulated parts exchange data, including pointers. |
| // This implies tagging on native and emulated architectures should match, which is |
| // not the case at the moment. |
| SKIP_WITH_NATIVE_BRIDGE; |
| |
| test_tag_mismatch(); |
| } |
| |
| #endif // __BIONIC__ |