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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/gwp_asan/client/lightweight_detector/partitionalloc_shims.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/test/multiprocess_test.h"
#include "base/test/test_timeouts.h"
#include "components/crash/core/common/crash_key.h"
#include "components/gwp_asan/client/lightweight_detector/poison_metadata_recorder.h"
#include "components/gwp_asan/common/lightweight_detector_state.h"
#include "partition_alloc/buildflags.h"
#include "partition_alloc/partition_alloc.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/multiprocess_func_list.h"
// PartitionAlloc (and hence hooking) are disabled with sanitizers that replace
// allocation routines.
#if !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) && \
PA_BUILDFLAG(ENABLE_BACKUP_REF_PTR_SUPPORT) && \
PA_BUILDFLAG(USE_RAW_PTR_BACKUP_REF_IMPL)
// These tests install global PartitionAlloc hooks so they are not safe to run
// in multi-threaded contexts. Instead they're implemented as multi-process
// tests.
namespace gwp_asan::internal::lud {
namespace {
constexpr int kSuccess = 0;
constexpr int kFailure = 1;
constexpr partition_alloc::PartitionOptions kAllocatorOptions = []() {
partition_alloc::PartitionOptions opts;
opts.backup_ref_ptr = partition_alloc::PartitionOptions::kEnabled;
return opts;
}();
static void HandleOOM(size_t) {
LOG(FATAL) << "Out of memory.";
}
} // namespace
class PartitionAllocShimsTest : public base::MultiProcessTest {
protected:
void runTest(const char* name) {
base::Process process = SpawnChild(name);
int exit_code = -1;
ASSERT_TRUE(WaitForMultiprocessTestChildExit(
process, TestTimeouts::action_max_timeout(), &exit_code));
EXPECT_EQ(exit_code, kSuccess);
}
};
MULTIPROCESS_TEST_MAIN(PartitionAllocShimsTest_Basic) {
crash_reporter::InitializeCrashKeys();
partition_alloc::PartitionAllocGlobalInit(HandleOOM);
PoisonMetadataRecorder::Init(LightweightDetectorMode::kBrpQuarantine,
LightweightDetectorState::kMaxMetadata);
InstallPartitionAllocHooks();
partition_alloc::PartitionAllocator allocator;
allocator.init(kAllocatorOptions);
raw_ptr<void, base::RawPtrTraits::kMayDangle> ptr =
allocator.root()->Alloc(1);
allocator.root()->Free(ptr);
if (PoisonMetadataRecorder::Get()->HasAllocationForTesting(
reinterpret_cast<uintptr_t>(ptr.get()))) {
return kSuccess;
}
return kFailure;
}
TEST_F(PartitionAllocShimsTest, Basic) {
runTest("PartitionAllocShimsTest_Basic");
}
} // namespace gwp_asan::internal::lud
#endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) &&
// PA_BUILDFLAG(ENABLE_BACKUP_REF_PTR_SUPPORT) &&
// PA_BUILDFLAG(USE_RAW_PTR_BACKUP_REF_IMPL)
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