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//===-- sanitizer_procmaps_test.cpp ---------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
//
//===----------------------------------------------------------------------===//
#if !defined(_WIN32) // There are no /proc/maps on Windows.
# include "sanitizer_common/sanitizer_procmaps.h"
# include <stdlib.h>
# include <string.h>
# include <vector>
# include "gtest/gtest.h"
static void noop() {}
extern const char *argv0;
namespace __sanitizer {
#if SANITIZER_LINUX && !SANITIZER_ANDROID
TEST(MemoryMappingLayout, CodeRange) {
uptr start, end;
bool res = GetCodeRangeForFile("[vdso]", &start, &end);
EXPECT_EQ(res, true);
EXPECT_GT(start, 0U);
EXPECT_LT(start, end);
}
#endif
TEST(MemoryMappingLayout, DumpListOfModules) {
const char *last_slash = strrchr(argv0, '/');
const char *binary_name = last_slash ? last_slash + 1 : argv0;
MemoryMappingLayout memory_mapping(false);
const uptr kMaxModules = 100;
InternalMmapVector<LoadedModule> modules;
modules.reserve(kMaxModules);
memory_mapping.DumpListOfModules(&modules);
EXPECT_GT(modules.size(), 0U);
bool found = false;
for (uptr i = 0; i < modules.size(); ++i) {
if (modules[i].containsAddress((uptr)&noop)) {
// Verify that the module name is sane.
if (strstr(modules[i].full_name(), binary_name) != 0)
found = true;
}
modules[i].clear();
}
EXPECT_TRUE(found);
}
TEST(MemoryMapping, LoadedModuleArchAndUUID) {
if (SANITIZER_APPLE) {
MemoryMappingLayout memory_mapping(false);
const uptr kMaxModules = 100;
InternalMmapVector<LoadedModule> modules;
modules.reserve(kMaxModules);
memory_mapping.DumpListOfModules(&modules);
for (uptr i = 0; i < modules.size(); ++i) {
ModuleArch arch = modules[i].arch();
// Darwin unit tests are only run on i386/x86_64/x86_64h/arm64.
if (SANITIZER_WORDSIZE == 32) {
EXPECT_EQ(arch, kModuleArchI386);
} else if (SANITIZER_WORDSIZE == 64) {
EXPECT_TRUE(arch == kModuleArchX86_64 || arch == kModuleArchX86_64H || arch == kModuleArchARM64);
}
const u8 *uuid = modules[i].uuid();
u8 null_uuid[kModuleUUIDSize] = {0};
EXPECT_NE(memcmp(null_uuid, uuid, kModuleUUIDSize), 0);
}
}
}
# if (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \
SANITIZER_SOLARIS) && \
defined(_LP64)
const char *const parse_unix_input = R"(
7fb9862f1000-7fb9862f3000 rw-p 00000000 00:00 0
Size: 8 kB
Rss: 4 kB
7fb9864ae000-7fb9864b1000 r--p 001ba000 fd:01 22413919 /lib/x86_64-linux-gnu/libc-2.32.so
Size: 12 kB
Rss: 12 kB
)";
TEST(MemoryMapping, ParseUnixMemoryProfile) {
struct entry {
uptr p;
uptr rss;
bool file;
};
typedef std::vector<entry> entries_t;
entries_t entries;
std::vector<char> input(parse_unix_input,
parse_unix_input + strlen(parse_unix_input));
ParseUnixMemoryProfile(
[](uptr p, uptr rss, bool file, uptr *mem) {
reinterpret_cast<entries_t *>(mem)->push_back({p, rss, file});
},
reinterpret_cast<uptr *>(&entries), &input[0], input.size());
EXPECT_EQ(entries.size(), 2ul);
EXPECT_EQ(entries[0].p, 0x7fb9862f1000ul);
EXPECT_EQ(entries[0].rss, 4ul << 10);
EXPECT_EQ(entries[0].file, false);
EXPECT_EQ(entries[1].p, 0x7fb9864ae000ul);
EXPECT_EQ(entries[1].rss, 12ul << 10);
EXPECT_EQ(entries[1].file, true);
}
TEST(MemoryMapping, ParseUnixMemoryProfileTruncated) {
// ParseUnixMemoryProfile used to crash on truncated inputs.
// This test allocates 2 pages, protects the second one
// and places the input at the very end of the first page
// to test for over-reads.
uptr page = GetPageSizeCached();
char *mem = static_cast<char *>(
MmapOrDie(2 * page, "ParseUnixMemoryProfileTruncated"));
EXPECT_TRUE(MprotectNoAccess(reinterpret_cast<uptr>(mem + page), page));
const uptr len = strlen(parse_unix_input);
for (uptr i = 0; i < len; i++) {
char *smaps = mem + page - len + i;
memcpy(smaps, parse_unix_input, len - i);
ParseUnixMemoryProfile([](uptr p, uptr rss, bool file, uptr *mem) {},
nullptr, smaps, len - i);
}
UnmapOrDie(mem, 2 * page);
}
# endif
} // namespace __sanitizer
#endif // !defined(_WIN32)
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