Test stack buffer size calculation.
Bug: 378140560
Change-Id: Idca03cac925bc0d8bd574817391c4eaca11f2bff
diff --git a/debuggerd/libdebuggerd/test/mte_stack_record_test.cpp b/debuggerd/libdebuggerd/test/mte_stack_record_test.cpp
index 4b788f3..bcda0ca 100644
--- a/debuggerd/libdebuggerd/test/mte_stack_record_test.cpp
+++ b/debuggerd/libdebuggerd/test/mte_stack_record_test.cpp
@@ -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 @@
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);