61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <sys/cdefs.h>
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#if defined(__BIONIC__)
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#include <gtest/gtest.h>
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#include <android-base/macros.h>
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#include <bionic/mte.h>
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#include "utils.h"
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__attribute__((no_sanitize("hwaddress")))
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static void test_tag_mismatch() {
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std::unique_ptr<int[]> p = std::make_unique<int[]>(4);
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p[0] = 1;
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int* mistagged_p ATTRIBUTE_UNUSED =
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reinterpret_cast<int*>(reinterpret_cast<uintptr_t>(p.get()) + (1ULL << 56));
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{
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ScopedDisableMTE x;
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// Test that nested ScopedDisableMTE does not reset MTE state.
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{ ScopedDisableMTE y; }
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#if defined(__aarch64__)
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volatile int load ATTRIBUTE_UNUSED = *mistagged_p;
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#endif
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}
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#if defined(__aarch64__)
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if (mte_supported() && running_with_mte()) {
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EXPECT_DEATH(
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{
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volatile int load ATTRIBUTE_UNUSED = *mistagged_p;
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},
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"");
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}
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#endif
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}
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TEST(mte_test, ScopedDisableMTE) {
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// With native_bridge, native and emulated parts exchange data, including pointers.
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// This implies tagging on native and emulated architectures should match, which is
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// not the case at the moment.
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SKIP_WITH_NATIVE_BRIDGE;
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test_tag_mismatch();
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}
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#endif // __BIONIC__
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