1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <gtest/gtest.h> 18 19 #include <android-base/macros.h> 20 #include <bionic/mte.h> 21 22 __attribute__((no_sanitize("hwaddress"))) test_tag_mismatch()23static void test_tag_mismatch() { 24 std::unique_ptr<int[]> p = std::make_unique<int[]>(4); 25 p[0] = 1; 26 int* mistagged_p ATTRIBUTE_UNUSED = 27 reinterpret_cast<int*>(reinterpret_cast<uintptr_t>(p.get()) + (1ULL << 56)); 28 { 29 ScopedDisableMTE x; 30 { ScopedDisableMTE y; } 31 #if defined(__aarch64__) 32 volatile int load ATTRIBUTE_UNUSED = *mistagged_p; 33 #endif 34 } 35 #if defined(__aarch64__) 36 if (mte_supported()) { 37 EXPECT_DEATH( 38 { 39 volatile int load ATTRIBUTE_UNUSED = *mistagged_p; 40 }, 41 ""); 42 } 43 #endif 44 } 45 TEST(mte_test,ScopedDisableMTE)46TEST(mte_test, ScopedDisableMTE) { 47 test_tag_mismatch(); 48 } 49