Test stack buffer size calculation. (6facd1bf) · Commits · e / os / android_system_core

debuggerd/libdebuggerd/test/mte_stack_record_test.cpp

+29 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,8 @@
		#include "unwindstack/Memory.h"

		#include <android-base/test_utils.h>
		#include <procinfo/process_map.h>

		#include "gtest/gtest.h"

		#include "libdebuggerd/tombstone.h"
		@@ -82,6 +84,33 @@ TEST(MteStackHistoryUnwindTest, TestOne) {
		EXPECT_EQ(e.tag(), 1ULL);
		}

		static std::optional<android::procinfo::MapInfo> FindMapping(void* data) {
		std::optional<android::procinfo::MapInfo> result;
		android::procinfo::ReadMapFile(
		"/proc/self/maps", [&result, data](const android::procinfo::MapInfo& info) {
		auto data_int = reinterpret_cast<uint64_t>(data) & ((1ULL << 56ULL) - 1ULL);
		if (info.start <= data_int && data_int < info.end) {
		result = info;
		}
		});
		return result;
		}

		TEST_P(MteStackHistoryTest, TestFree) {
		int size_cls = GetParam();
		size_t size = stack_mte_ringbuffer_size(size_cls);
		void* data = stack_mte_ringbuffer_allocate(size_cls, nullptr);
		EXPECT_EQ(stack_mte_ringbuffer_size_from_pointer(reinterpret_cast<uintptr_t>(data)), size);
		auto before = FindMapping(data);
		ASSERT_TRUE(before.has_value());
		EXPECT_EQ(before->end - before->start, size);
		stack_mte_free_ringbuffer(reinterpret_cast<uintptr_t>(data));
		for (size_t i = 0; i < size; i += page_size()) {
		auto after = FindMapping(static_cast<char*>(data) + i);
		EXPECT_TRUE(!after.has_value() \|\| after->name != before->name);
		}
		}

		TEST_P(MteStackHistoryTest, TestEmpty) {
		int size_cls = GetParam();
		size_t size = stack_mte_ringbuffer_size(size_cls);