187 lines
8.4 KiB
C++
187 lines
8.4 KiB
C++
/*
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* Copyright (C) 2017 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 "common_runtime_test.h"
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#include "base/memory_tool.h"
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#include "class_linker-inl.h"
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#include "class_root-inl.h"
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#include "handle_scope-inl.h"
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#include "mirror/object-inl.h"
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#include "mirror/object_array-alloc-inl.h"
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#include "mirror/object_array-inl.h"
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#include "mirror/string.h"
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#include "runtime.h"
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#include "scoped_thread_state_change-inl.h"
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#include "verification.h"
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namespace art {
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namespace gc {
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class VerificationTest : public CommonRuntimeTest {
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protected:
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VerificationTest() {}
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template <class T>
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ObjPtr<mirror::ObjectArray<T>> AllocObjectArray(Thread* self, size_t length)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return mirror::ObjectArray<T>::Alloc(
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self,
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GetClassRoot<mirror::ObjectArray<mirror::Object>>(),
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length);
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}
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};
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TEST_F(VerificationTest, IsValidHeapObjectAddress) {
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ScopedObjectAccess soa(Thread::Current());
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const Verification* const v = Runtime::Current()->GetHeap()->GetVerification();
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EXPECT_FALSE(v->IsValidHeapObjectAddress(reinterpret_cast<const void*>(1)));
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EXPECT_FALSE(v->IsValidHeapObjectAddress(reinterpret_cast<const void*>(4)));
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EXPECT_FALSE(v->IsValidHeapObjectAddress(nullptr));
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VariableSizedHandleScope hs(soa.Self());
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Handle<mirror::String> string(
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hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "test")));
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EXPECT_TRUE(v->IsValidHeapObjectAddress(string.Get()));
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// Address in the heap that isn't aligned.
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const void* unaligned_address =
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reinterpret_cast<const void*>(reinterpret_cast<uintptr_t>(string.Get()) + 1);
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EXPECT_TRUE(v->IsAddressInHeapSpace(unaligned_address));
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EXPECT_FALSE(v->IsValidHeapObjectAddress(unaligned_address));
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EXPECT_TRUE(v->IsValidHeapObjectAddress(string->GetClass()));
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const uintptr_t uint_klass = reinterpret_cast<uintptr_t>(string->GetClass());
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// Not actually a valid object but the verification can't know that. Guaranteed to be inside a
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// heap space.
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EXPECT_TRUE(v->IsValidHeapObjectAddress(
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reinterpret_cast<const void*>(uint_klass + kObjectAlignment)));
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EXPECT_FALSE(v->IsValidHeapObjectAddress(
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reinterpret_cast<const void*>(&uint_klass)));
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}
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TEST_F(VerificationTest, IsValidClassOrNotInHeap) {
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ScopedObjectAccess soa(Thread::Current());
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VariableSizedHandleScope hs(soa.Self());
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Handle<mirror::String> string(
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hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "test")));
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const Verification* const v = Runtime::Current()->GetHeap()->GetVerification();
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EXPECT_FALSE(v->IsValidClass(reinterpret_cast<const void*>(1)));
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EXPECT_FALSE(v->IsValidClass(reinterpret_cast<const void*>(4)));
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EXPECT_FALSE(v->IsValidClass(nullptr));
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EXPECT_TRUE(v->IsValidClass(string->GetClass()));
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EXPECT_FALSE(v->IsValidClass(string.Get()));
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}
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TEST_F(VerificationTest, IsValidClassInHeap) {
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// Now that the String class is allocated in the non-moving space when the
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// runtime is running without a boot image (which is the case in this gtest),
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// and we run with AddressSanizer, it is possible that the (presumably
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// invalid) memory location `uint_klass - kObjectAlignment` tested below is
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// poisoned when running with AddressSanizer. Disable this test in that case.
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TEST_DISABLED_FOR_MEMORY_TOOL();
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ScopedObjectAccess soa(Thread::Current());
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VariableSizedHandleScope hs(soa.Self());
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Handle<mirror::String> string(
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hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "test")));
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const Verification* const v = Runtime::Current()->GetHeap()->GetVerification();
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const uintptr_t uint_klass = reinterpret_cast<uintptr_t>(string->GetClass());
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EXPECT_FALSE(v->IsValidClass(reinterpret_cast<const void*>(uint_klass - kObjectAlignment)));
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EXPECT_FALSE(v->IsValidClass(reinterpret_cast<const void*>(&uint_klass)));
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}
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TEST_F(VerificationTest, DumpInvalidObjectInfo) {
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ScopedLogSeverity sls(LogSeverity::INFO);
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ScopedObjectAccess soa(Thread::Current());
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Runtime* const runtime = Runtime::Current();
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VariableSizedHandleScope hs(soa.Self());
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const Verification* const v = runtime->GetHeap()->GetVerification();
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LOG(INFO) << v->DumpObjectInfo(reinterpret_cast<const void*>(1), "obj");
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LOG(INFO) << v->DumpObjectInfo(reinterpret_cast<const void*>(4), "obj");
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LOG(INFO) << v->DumpObjectInfo(nullptr, "obj");
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}
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TEST_F(VerificationTest, DumpValidObjectInfo) {
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// Now that the String class is allocated in the non-moving space when the
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// runtime is running without a boot image (which is the case in this gtest),
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// and we run with AddressSanizer, it is possible that the calls to
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// Verification::DumpObjectInfo below involving the String class object
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// (`string->GetClass()`, `uint_klass`, etc.) access poisoned memory when they
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// call Verification::DumpRAMAroundAddress. Disable this test in that case.
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TEST_DISABLED_FOR_MEMORY_TOOL();
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ScopedLogSeverity sls(LogSeverity::INFO);
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ScopedObjectAccess soa(Thread::Current());
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Runtime* const runtime = Runtime::Current();
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VariableSizedHandleScope hs(soa.Self());
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Handle<mirror::String> string(
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hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "obj")));
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Handle<mirror::ObjectArray<mirror::Object>> arr(
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hs.NewHandle(AllocObjectArray<mirror::Object>(soa.Self(), 256)));
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const Verification* const v = runtime->GetHeap()->GetVerification();
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LOG(INFO) << v->DumpObjectInfo(string.Get(), "test");
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LOG(INFO) << v->DumpObjectInfo(string->GetClass(), "obj");
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const uintptr_t uint_klass = reinterpret_cast<uintptr_t>(string->GetClass());
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LOG(INFO) << v->DumpObjectInfo(reinterpret_cast<const void*>(uint_klass - kObjectAlignment),
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"obj");
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LOG(INFO) << v->DumpObjectInfo(reinterpret_cast<const void*>(&uint_klass), "obj");
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LOG(INFO) << v->DumpObjectInfo(arr.Get(), "arr");
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}
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TEST_F(VerificationTest, LogHeapCorruption) {
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// Now that the String class is allocated in the non-moving space when the
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// runtime is running without a boot image (which is the case in this gtest),
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// and we run with AddressSanizer, it is possible that the call to
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// Verification::LogHeapCorruption below involving the String class object
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// (`string->GetClass()`) accesses poisoned memory when it calls
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// Verification::DumpRAMAroundAddress. Disable this test in that case.
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TEST_DISABLED_FOR_MEMORY_TOOL();
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ScopedLogSeverity sls(LogSeverity::INFO);
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ScopedObjectAccess soa(Thread::Current());
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Runtime* const runtime = Runtime::Current();
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VariableSizedHandleScope hs(soa.Self());
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Handle<mirror::String> string(
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hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "obj")));
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using ObjArray = mirror::ObjectArray<mirror::Object>;
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Handle<ObjArray> arr(
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hs.NewHandle(AllocObjectArray<mirror::Object>(soa.Self(), 256)));
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const Verification* const v = runtime->GetHeap()->GetVerification();
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arr->Set(0, string.Get());
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// Test normal cases.
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v->LogHeapCorruption(arr.Get(), ObjArray::DataOffset(kHeapReferenceSize), string.Get(), false);
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v->LogHeapCorruption(string.Get(), mirror::Object::ClassOffset(), string->GetClass(), false);
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// Test null holder cases.
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v->LogHeapCorruption(nullptr, MemberOffset(0), string.Get(), false);
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v->LogHeapCorruption(nullptr, MemberOffset(0), arr.Get(), false);
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}
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TEST_F(VerificationTest, FindPathFromRootSet) {
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ScopedLogSeverity sls(LogSeverity::INFO);
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ScopedObjectAccess soa(Thread::Current());
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Runtime* const runtime = Runtime::Current();
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VariableSizedHandleScope hs(soa.Self());
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Handle<mirror::ObjectArray<mirror::Object>> arr(
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hs.NewHandle(AllocObjectArray<mirror::Object>(soa.Self(), 256)));
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ObjPtr<mirror::String> str = mirror::String::AllocFromModifiedUtf8(soa.Self(), "obj");
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arr->Set(0, str);
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const Verification* const v = runtime->GetHeap()->GetVerification();
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std::string path = v->FirstPathFromRootSet(str);
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EXPECT_GT(path.length(), 0u);
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std::ostringstream oss;
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oss << arr.Get();
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EXPECT_NE(path.find(oss.str()), std::string::npos);
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LOG(INFO) << path;
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}
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} // namespace gc
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} // namespace art
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