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Test stack buffer size calculation.

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Bug: 378140560
Change-Id: Idca03cac925bc0d8bd574817391c4eaca11f2bff
This commit is contained in:
Florian Mayer 2024-11-08 15:23:53 -08:00
parent 7e0ba3af9a
commit 6facd1bfd3
1 changed files with 29 additions and 0 deletions
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29
debuggerd/libdebuggerd/test/mte_stack_record_test.cpp
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@ -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);