asan_test.cc revision f1877cf0a314f407ac535ab1606fdac4f9b05026
1//===-- asan_test.cc ------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of AddressSanitizer, an address sanity checker. 11// 12//===----------------------------------------------------------------------===// 13#include <stdio.h> 14#include <signal.h> 15#include <stdlib.h> 16#include <string.h> 17#include <strings.h> 18#include <pthread.h> 19#include <stdint.h> 20#include <setjmp.h> 21#include <assert.h> 22 23#ifdef __linux__ 24# include <sys/prctl.h> 25# include <sys/types.h> 26# include <sys/stat.h> 27# include <fcntl.h> 28#endif 29 30#if defined(__i386__) || defined(__x86_64__) 31#include <emmintrin.h> 32#endif 33 34#include "asan_test_utils.h" 35 36#ifndef __APPLE__ 37#include <malloc.h> 38#else 39#include <malloc/malloc.h> 40#include <AvailabilityMacros.h> // For MAC_OS_X_VERSION_* 41#include <CoreFoundation/CFString.h> 42#endif // __APPLE__ 43 44#if ASAN_HAS_EXCEPTIONS 45# define ASAN_THROW(x) throw (x) 46#else 47# define ASAN_THROW(x) 48#endif 49 50#include <sys/mman.h> 51 52typedef uint8_t U1; 53typedef uint16_t U2; 54typedef uint32_t U4; 55typedef uint64_t U8; 56 57static const int kPageSize = 4096; 58 59// Simple stand-alone pseudorandom number generator. 60// Current algorithm is ANSI C linear congruential PRNG. 61static inline uint32_t my_rand(uint32_t* state) { 62 return (*state = *state * 1103515245 + 12345) >> 16; 63} 64 65static uint32_t global_seed = 0; 66 67const size_t kLargeMalloc = 1 << 24; 68 69template<typename T> 70NOINLINE void asan_write(T *a) { 71 *a = 0; 72} 73 74NOINLINE void asan_write_sized_aligned(uint8_t *p, size_t size) { 75 EXPECT_EQ(0U, ((uintptr_t)p % size)); 76 if (size == 1) asan_write((uint8_t*)p); 77 else if (size == 2) asan_write((uint16_t*)p); 78 else if (size == 4) asan_write((uint32_t*)p); 79 else if (size == 8) asan_write((uint64_t*)p); 80} 81 82NOINLINE void *malloc_fff(size_t size) { 83 void *res = malloc/**/(size); break_optimization(0); return res;} 84NOINLINE void *malloc_eee(size_t size) { 85 void *res = malloc_fff(size); break_optimization(0); return res;} 86NOINLINE void *malloc_ddd(size_t size) { 87 void *res = malloc_eee(size); break_optimization(0); return res;} 88NOINLINE void *malloc_ccc(size_t size) { 89 void *res = malloc_ddd(size); break_optimization(0); return res;} 90NOINLINE void *malloc_bbb(size_t size) { 91 void *res = malloc_ccc(size); break_optimization(0); return res;} 92NOINLINE void *malloc_aaa(size_t size) { 93 void *res = malloc_bbb(size); break_optimization(0); return res;} 94 95#ifndef __APPLE__ 96NOINLINE void *memalign_fff(size_t alignment, size_t size) { 97 void *res = memalign/**/(alignment, size); break_optimization(0); return res;} 98NOINLINE void *memalign_eee(size_t alignment, size_t size) { 99 void *res = memalign_fff(alignment, size); break_optimization(0); return res;} 100NOINLINE void *memalign_ddd(size_t alignment, size_t size) { 101 void *res = memalign_eee(alignment, size); break_optimization(0); return res;} 102NOINLINE void *memalign_ccc(size_t alignment, size_t size) { 103 void *res = memalign_ddd(alignment, size); break_optimization(0); return res;} 104NOINLINE void *memalign_bbb(size_t alignment, size_t size) { 105 void *res = memalign_ccc(alignment, size); break_optimization(0); return res;} 106NOINLINE void *memalign_aaa(size_t alignment, size_t size) { 107 void *res = memalign_bbb(alignment, size); break_optimization(0); return res;} 108#endif // __APPLE__ 109 110 111NOINLINE void free_ccc(void *p) { free(p); break_optimization(0);} 112NOINLINE void free_bbb(void *p) { free_ccc(p); break_optimization(0);} 113NOINLINE void free_aaa(void *p) { free_bbb(p); break_optimization(0);} 114 115template<typename T> 116NOINLINE void oob_test(int size, int off) { 117 char *p = (char*)malloc_aaa(size); 118 // fprintf(stderr, "writing %d byte(s) into [%p,%p) with offset %d\n", 119 // sizeof(T), p, p + size, off); 120 asan_write((T*)(p + off)); 121 free_aaa(p); 122} 123 124 125template<typename T> 126NOINLINE void uaf_test(int size, int off) { 127 char *p = (char *)malloc_aaa(size); 128 free_aaa(p); 129 for (int i = 1; i < 100; i++) 130 free_aaa(malloc_aaa(i)); 131 fprintf(stderr, "writing %ld byte(s) at %p with offset %d\n", 132 (long)sizeof(T), p, off); 133 asan_write((T*)(p + off)); 134} 135 136TEST(AddressSanitizer, HasFeatureAddressSanitizerTest) { 137#if defined(__has_feature) && __has_feature(address_sanitizer) 138 bool asan = 1; 139#elif defined(__SANITIZE_ADDRESS__) 140 bool asan = 1; 141#else 142 bool asan = 0; 143#endif 144 EXPECT_EQ(true, asan); 145} 146 147TEST(AddressSanitizer, SimpleDeathTest) { 148 EXPECT_DEATH(exit(1), ""); 149} 150 151TEST(AddressSanitizer, VariousMallocsTest) { 152 int *a = (int*)malloc(100 * sizeof(int)); 153 a[50] = 0; 154 free(a); 155 156 int *r = (int*)malloc(10); 157 r = (int*)realloc(r, 2000 * sizeof(int)); 158 r[1000] = 0; 159 free(r); 160 161 int *b = new int[100]; 162 b[50] = 0; 163 delete [] b; 164 165 int *c = new int; 166 *c = 0; 167 delete c; 168 169#if !defined(__APPLE__) && !defined(ANDROID) && !defined(__ANDROID__) 170 int *pm; 171 int pm_res = posix_memalign((void**)&pm, kPageSize, kPageSize); 172 EXPECT_EQ(0, pm_res); 173 free(pm); 174#endif 175 176#if !defined(__APPLE__) 177 int *ma = (int*)memalign(kPageSize, kPageSize); 178 EXPECT_EQ(0U, (uintptr_t)ma % kPageSize); 179 ma[123] = 0; 180 free(ma); 181#endif // __APPLE__ 182} 183 184TEST(AddressSanitizer, CallocTest) { 185 int *a = (int*)calloc(100, sizeof(int)); 186 EXPECT_EQ(0, a[10]); 187 free(a); 188} 189 190TEST(AddressSanitizer, VallocTest) { 191 void *a = valloc(100); 192 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 193 free(a); 194} 195 196#ifndef __APPLE__ 197TEST(AddressSanitizer, PvallocTest) { 198 char *a = (char*)pvalloc(kPageSize + 100); 199 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 200 a[kPageSize + 101] = 1; // we should not report an error here. 201 free(a); 202 203 a = (char*)pvalloc(0); // pvalloc(0) should allocate at least one page. 204 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 205 a[101] = 1; // we should not report an error here. 206 free(a); 207} 208#endif // __APPLE__ 209 210void *TSDWorker(void *test_key) { 211 if (test_key) { 212 pthread_setspecific(*(pthread_key_t*)test_key, (void*)0xfeedface); 213 } 214 return NULL; 215} 216 217void TSDDestructor(void *tsd) { 218 // Spawning a thread will check that the current thread id is not -1. 219 pthread_t th; 220 PTHREAD_CREATE(&th, NULL, TSDWorker, NULL); 221 PTHREAD_JOIN(th, NULL); 222} 223 224// This tests triggers the thread-specific data destruction fiasco which occurs 225// if we don't manage the TSD destructors ourselves. We create a new pthread 226// key with a non-NULL destructor which is likely to be put after the destructor 227// of AsanThread in the list of destructors. 228// In this case the TSD for AsanThread will be destroyed before TSDDestructor 229// is called for the child thread, and a CHECK will fail when we call 230// pthread_create() to spawn the grandchild. 231TEST(AddressSanitizer, DISABLED_TSDTest) { 232 pthread_t th; 233 pthread_key_t test_key; 234 pthread_key_create(&test_key, TSDDestructor); 235 PTHREAD_CREATE(&th, NULL, TSDWorker, &test_key); 236 PTHREAD_JOIN(th, NULL); 237 pthread_key_delete(test_key); 238} 239 240template<typename T> 241void OOBTest() { 242 char expected_str[100]; 243 for (int size = sizeof(T); size < 20; size += 5) { 244 for (int i = -5; i < 0; i++) { 245 const char *str = 246 "is located.*%d byte.*to the left"; 247 sprintf(expected_str, str, abs(i)); 248 EXPECT_DEATH(oob_test<T>(size, i), expected_str); 249 } 250 251 for (int i = 0; i < (int)(size - sizeof(T) + 1); i++) 252 oob_test<T>(size, i); 253 254 for (int i = size - sizeof(T) + 1; i <= (int)(size + 3 * sizeof(T)); i++) { 255 const char *str = 256 "is located.*%d byte.*to the right"; 257 int off = i >= size ? (i - size) : 0; 258 // we don't catch unaligned partially OOB accesses. 259 if (i % sizeof(T)) continue; 260 sprintf(expected_str, str, off); 261 EXPECT_DEATH(oob_test<T>(size, i), expected_str); 262 } 263 } 264 265 EXPECT_DEATH(oob_test<T>(kLargeMalloc, -1), 266 "is located.*1 byte.*to the left"); 267 EXPECT_DEATH(oob_test<T>(kLargeMalloc, kLargeMalloc), 268 "is located.*0 byte.*to the right"); 269} 270 271// TODO(glider): the following tests are EXTREMELY slow on Darwin: 272// AddressSanitizer.OOB_char (125503 ms) 273// AddressSanitizer.OOB_int (126890 ms) 274// AddressSanitizer.OOBRightTest (315605 ms) 275// AddressSanitizer.SimpleStackTest (366559 ms) 276 277TEST(AddressSanitizer, OOB_char) { 278 OOBTest<U1>(); 279} 280 281TEST(AddressSanitizer, OOB_int) { 282 OOBTest<U4>(); 283} 284 285TEST(AddressSanitizer, OOBRightTest) { 286 for (size_t access_size = 1; access_size <= 8; access_size *= 2) { 287 for (size_t alloc_size = 1; alloc_size <= 8; alloc_size++) { 288 for (size_t offset = 0; offset <= 8; offset += access_size) { 289 void *p = malloc(alloc_size); 290 // allocated: [p, p + alloc_size) 291 // accessed: [p + offset, p + offset + access_size) 292 uint8_t *addr = (uint8_t*)p + offset; 293 if (offset + access_size <= alloc_size) { 294 asan_write_sized_aligned(addr, access_size); 295 } else { 296 int outside_bytes = offset > alloc_size ? (offset - alloc_size) : 0; 297 const char *str = 298 "is located.%d *byte.*to the right"; 299 char expected_str[100]; 300 sprintf(expected_str, str, outside_bytes); 301 EXPECT_DEATH(asan_write_sized_aligned(addr, access_size), 302 expected_str); 303 } 304 free(p); 305 } 306 } 307 } 308} 309 310#if ASAN_ALLOCATOR_VERSION == 2 // Broken with the asan_allocator1 311TEST(AddressSanitizer, LargeOOBRightTest) { 312 size_t large_power_of_two = 1 << 19; 313 for (size_t i = 16; i <= 256; i *= 2) { 314 size_t size = large_power_of_two - i; 315 char *p = Ident(new char[size]); 316 EXPECT_DEATH(p[size] = 0, "is located 0 bytes to the right"); 317 delete [] p; 318 } 319} 320#endif // ASAN_ALLOCATOR_VERSION == 2 321 322TEST(AddressSanitizer, UAF_char) { 323 const char *uaf_string = "AddressSanitizer:.*heap-use-after-free"; 324 EXPECT_DEATH(uaf_test<U1>(1, 0), uaf_string); 325 EXPECT_DEATH(uaf_test<U1>(10, 0), uaf_string); 326 EXPECT_DEATH(uaf_test<U1>(10, 10), uaf_string); 327 EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, 0), uaf_string); 328 EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, kLargeMalloc / 2), uaf_string); 329} 330 331#if ASAN_HAS_BLACKLIST 332TEST(AddressSanitizer, IgnoreTest) { 333 int *x = Ident(new int); 334 delete Ident(x); 335 *x = 0; 336} 337#endif // ASAN_HAS_BLACKLIST 338 339struct StructWithBitField { 340 int bf1:1; 341 int bf2:1; 342 int bf3:1; 343 int bf4:29; 344}; 345 346TEST(AddressSanitizer, BitFieldPositiveTest) { 347 StructWithBitField *x = new StructWithBitField; 348 delete Ident(x); 349 EXPECT_DEATH(x->bf1 = 0, "use-after-free"); 350 EXPECT_DEATH(x->bf2 = 0, "use-after-free"); 351 EXPECT_DEATH(x->bf3 = 0, "use-after-free"); 352 EXPECT_DEATH(x->bf4 = 0, "use-after-free"); 353} 354 355struct StructWithBitFields_8_24 { 356 int a:8; 357 int b:24; 358}; 359 360TEST(AddressSanitizer, BitFieldNegativeTest) { 361 StructWithBitFields_8_24 *x = Ident(new StructWithBitFields_8_24); 362 x->a = 0; 363 x->b = 0; 364 delete Ident(x); 365} 366 367TEST(AddressSanitizer, OutOfMemoryTest) { 368 size_t size = SANITIZER_WORDSIZE == 64 ? (size_t)(1ULL << 48) : (0xf0000000); 369 EXPECT_EQ(0, realloc(0, size)); 370 EXPECT_EQ(0, realloc(0, ~Ident(0))); 371 EXPECT_EQ(0, malloc(size)); 372 EXPECT_EQ(0, malloc(~Ident(0))); 373 EXPECT_EQ(0, calloc(1, size)); 374 EXPECT_EQ(0, calloc(1, ~Ident(0))); 375} 376 377#if ASAN_NEEDS_SEGV 378namespace { 379 380const char kUnknownCrash[] = "AddressSanitizer: SEGV on unknown address"; 381const char kOverriddenHandler[] = "ASan signal handler has been overridden\n"; 382 383TEST(AddressSanitizer, WildAddressTest) { 384 char *c = (char*)0x123; 385 EXPECT_DEATH(*c = 0, kUnknownCrash); 386} 387 388void my_sigaction_sighandler(int, siginfo_t*, void*) { 389 fprintf(stderr, kOverriddenHandler); 390 exit(1); 391} 392 393void my_signal_sighandler(int signum) { 394 fprintf(stderr, kOverriddenHandler); 395 exit(1); 396} 397 398TEST(AddressSanitizer, SignalTest) { 399 struct sigaction sigact; 400 memset(&sigact, 0, sizeof(sigact)); 401 sigact.sa_sigaction = my_sigaction_sighandler; 402 sigact.sa_flags = SA_SIGINFO; 403 // ASan should silently ignore sigaction()... 404 EXPECT_EQ(0, sigaction(SIGSEGV, &sigact, 0)); 405#ifdef __APPLE__ 406 EXPECT_EQ(0, sigaction(SIGBUS, &sigact, 0)); 407#endif 408 char *c = (char*)0x123; 409 EXPECT_DEATH(*c = 0, kUnknownCrash); 410 // ... and signal(). 411 EXPECT_EQ(0, signal(SIGSEGV, my_signal_sighandler)); 412 EXPECT_DEATH(*c = 0, kUnknownCrash); 413} 414} // namespace 415#endif 416 417static void MallocStress(size_t n) { 418 uint32_t seed = my_rand(&global_seed); 419 for (size_t iter = 0; iter < 10; iter++) { 420 vector<void *> vec; 421 for (size_t i = 0; i < n; i++) { 422 if ((i % 3) == 0) { 423 if (vec.empty()) continue; 424 size_t idx = my_rand(&seed) % vec.size(); 425 void *ptr = vec[idx]; 426 vec[idx] = vec.back(); 427 vec.pop_back(); 428 free_aaa(ptr); 429 } else { 430 size_t size = my_rand(&seed) % 1000 + 1; 431#ifndef __APPLE__ 432 size_t alignment = 1 << (my_rand(&seed) % 7 + 3); 433 char *ptr = (char*)memalign_aaa(alignment, size); 434#else 435 char *ptr = (char*) malloc_aaa(size); 436#endif 437 vec.push_back(ptr); 438 ptr[0] = 0; 439 ptr[size-1] = 0; 440 ptr[size/2] = 0; 441 } 442 } 443 for (size_t i = 0; i < vec.size(); i++) 444 free_aaa(vec[i]); 445 } 446} 447 448TEST(AddressSanitizer, MallocStressTest) { 449 MallocStress((ASAN_LOW_MEMORY) ? 20000 : 200000); 450} 451 452static void TestLargeMalloc(size_t size) { 453 char buff[1024]; 454 sprintf(buff, "is located 1 bytes to the left of %lu-byte", (long)size); 455 EXPECT_DEATH(Ident((char*)malloc(size))[-1] = 0, buff); 456} 457 458TEST(AddressSanitizer, LargeMallocTest) { 459 for (int i = 113; i < (1 << 28); i = i * 2 + 13) { 460 TestLargeMalloc(i); 461 } 462} 463 464#if ASAN_LOW_MEMORY != 1 465TEST(AddressSanitizer, HugeMallocTest) { 466#ifdef __APPLE__ 467 // It was empirically found out that 1215 megabytes is the maximum amount of 468 // memory available to the process under AddressSanitizer on 32-bit Mac 10.6. 469 // 32-bit Mac 10.7 gives even less (< 1G). 470 // (the libSystem malloc() allows allocating up to 2300 megabytes without 471 // ASan). 472 size_t n_megs = SANITIZER_WORDSIZE == 32 ? 500 : 4100; 473#else 474 size_t n_megs = SANITIZER_WORDSIZE == 32 ? 2600 : 4100; 475#endif 476 TestLargeMalloc(n_megs << 20); 477} 478#endif 479 480#ifndef __APPLE__ 481void MemalignRun(size_t align, size_t size, int idx) { 482 fprintf(stderr, "align %ld\n", align); 483 char *p = (char *)memalign(align, size); 484 Ident(p)[idx] = 0; 485 free(p); 486} 487 488TEST(AddressSanitizer, memalign) { 489 for (int align = 16; align <= (1 << 23); align *= 2) { 490 size_t size = align * 5; 491 EXPECT_DEATH(MemalignRun(align, size, -1), 492 "is located 1 bytes to the left"); 493 EXPECT_DEATH(MemalignRun(align, size, size + 1), 494 "is located 1 bytes to the right"); 495 } 496} 497#endif 498 499TEST(AddressSanitizer, ThreadedMallocStressTest) { 500 const int kNumThreads = 4; 501 const int kNumIterations = (ASAN_LOW_MEMORY) ? 10000 : 100000; 502 pthread_t t[kNumThreads]; 503 for (int i = 0; i < kNumThreads; i++) { 504 PTHREAD_CREATE(&t[i], 0, (void* (*)(void *x))MallocStress, 505 (void*)kNumIterations); 506 } 507 for (int i = 0; i < kNumThreads; i++) { 508 PTHREAD_JOIN(t[i], 0); 509 } 510} 511 512void *ManyThreadsWorker(void *a) { 513 for (int iter = 0; iter < 100; iter++) { 514 for (size_t size = 100; size < 2000; size *= 2) { 515 free(Ident(malloc(size))); 516 } 517 } 518 return 0; 519} 520 521TEST(AddressSanitizer, ManyThreadsTest) { 522 const size_t kNumThreads = 523 (SANITIZER_WORDSIZE == 32 || ASAN_AVOID_EXPENSIVE_TESTS) ? 30 : 1000; 524 pthread_t t[kNumThreads]; 525 for (size_t i = 0; i < kNumThreads; i++) { 526 PTHREAD_CREATE(&t[i], 0, ManyThreadsWorker, (void*)i); 527 } 528 for (size_t i = 0; i < kNumThreads; i++) { 529 PTHREAD_JOIN(t[i], 0); 530 } 531} 532 533TEST(AddressSanitizer, ReallocTest) { 534 const int kMinElem = 5; 535 int *ptr = (int*)malloc(sizeof(int) * kMinElem); 536 ptr[3] = 3; 537 for (int i = 0; i < 10000; i++) { 538 ptr = (int*)realloc(ptr, 539 (my_rand(&global_seed) % 1000 + kMinElem) * sizeof(int)); 540 EXPECT_EQ(3, ptr[3]); 541 } 542} 543 544#ifndef __APPLE__ 545static const char *kMallocUsableSizeErrorMsg = 546 "AddressSanitizer: attempting to call malloc_usable_size()"; 547 548TEST(AddressSanitizer, MallocUsableSizeTest) { 549 const size_t kArraySize = 100; 550 char *array = Ident((char*)malloc(kArraySize)); 551 int *int_ptr = Ident(new int); 552 EXPECT_EQ(0U, malloc_usable_size(NULL)); 553 EXPECT_EQ(kArraySize, malloc_usable_size(array)); 554 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); 555 EXPECT_DEATH(malloc_usable_size((void*)0x123), kMallocUsableSizeErrorMsg); 556 EXPECT_DEATH(malloc_usable_size(array + kArraySize / 2), 557 kMallocUsableSizeErrorMsg); 558 free(array); 559 EXPECT_DEATH(malloc_usable_size(array), kMallocUsableSizeErrorMsg); 560} 561#endif 562 563void WrongFree() { 564 int *x = (int*)malloc(100 * sizeof(int)); 565 // Use the allocated memory, otherwise Clang will optimize it out. 566 Ident(x); 567 free(x + 1); 568} 569 570TEST(AddressSanitizer, WrongFreeTest) { 571 EXPECT_DEATH(WrongFree(), 572 "ERROR: AddressSanitizer: attempting free.*not malloc"); 573} 574 575void DoubleFree() { 576 int *x = (int*)malloc(100 * sizeof(int)); 577 fprintf(stderr, "DoubleFree: x=%p\n", x); 578 free(x); 579 free(x); 580 fprintf(stderr, "should have failed in the second free(%p)\n", x); 581 abort(); 582} 583 584TEST(AddressSanitizer, DoubleFreeTest) { 585 EXPECT_DEATH(DoubleFree(), ASAN_PCRE_DOTALL 586 "ERROR: AddressSanitizer: attempting double-free" 587 ".*is located 0 bytes inside of 400-byte region" 588 ".*freed by thread T0 here" 589 ".*previously allocated by thread T0 here"); 590} 591 592template<int kSize> 593NOINLINE void SizedStackTest() { 594 char a[kSize]; 595 char *A = Ident((char*)&a); 596 for (size_t i = 0; i < kSize; i++) 597 A[i] = i; 598 EXPECT_DEATH(A[-1] = 0, ""); 599 EXPECT_DEATH(A[-20] = 0, ""); 600 EXPECT_DEATH(A[-31] = 0, ""); 601 EXPECT_DEATH(A[kSize] = 0, ""); 602 EXPECT_DEATH(A[kSize + 1] = 0, ""); 603 EXPECT_DEATH(A[kSize + 10] = 0, ""); 604 EXPECT_DEATH(A[kSize + 31] = 0, ""); 605} 606 607TEST(AddressSanitizer, SimpleStackTest) { 608 SizedStackTest<1>(); 609 SizedStackTest<2>(); 610 SizedStackTest<3>(); 611 SizedStackTest<4>(); 612 SizedStackTest<5>(); 613 SizedStackTest<6>(); 614 SizedStackTest<7>(); 615 SizedStackTest<16>(); 616 SizedStackTest<25>(); 617 SizedStackTest<34>(); 618 SizedStackTest<43>(); 619 SizedStackTest<51>(); 620 SizedStackTest<62>(); 621 SizedStackTest<64>(); 622 SizedStackTest<128>(); 623} 624 625TEST(AddressSanitizer, ManyStackObjectsTest) { 626 char XXX[10]; 627 char YYY[20]; 628 char ZZZ[30]; 629 Ident(XXX); 630 Ident(YYY); 631 EXPECT_DEATH(Ident(ZZZ)[-1] = 0, ASAN_PCRE_DOTALL "XXX.*YYY.*ZZZ"); 632} 633 634NOINLINE static void Frame0(int frame, char *a, char *b, char *c) { 635 char d[4] = {0}; 636 char *D = Ident(d); 637 switch (frame) { 638 case 3: a[5]++; break; 639 case 2: b[5]++; break; 640 case 1: c[5]++; break; 641 case 0: D[5]++; break; 642 } 643} 644NOINLINE static void Frame1(int frame, char *a, char *b) { 645 char c[4] = {0}; Frame0(frame, a, b, c); 646 break_optimization(0); 647} 648NOINLINE static void Frame2(int frame, char *a) { 649 char b[4] = {0}; Frame1(frame, a, b); 650 break_optimization(0); 651} 652NOINLINE static void Frame3(int frame) { 653 char a[4] = {0}; Frame2(frame, a); 654 break_optimization(0); 655} 656 657TEST(AddressSanitizer, GuiltyStackFrame0Test) { 658 EXPECT_DEATH(Frame3(0), "located .*in frame <.*Frame0"); 659} 660TEST(AddressSanitizer, GuiltyStackFrame1Test) { 661 EXPECT_DEATH(Frame3(1), "located .*in frame <.*Frame1"); 662} 663TEST(AddressSanitizer, GuiltyStackFrame2Test) { 664 EXPECT_DEATH(Frame3(2), "located .*in frame <.*Frame2"); 665} 666TEST(AddressSanitizer, GuiltyStackFrame3Test) { 667 EXPECT_DEATH(Frame3(3), "located .*in frame <.*Frame3"); 668} 669 670NOINLINE void LongJmpFunc1(jmp_buf buf) { 671 // create three red zones for these two stack objects. 672 int a; 673 int b; 674 675 int *A = Ident(&a); 676 int *B = Ident(&b); 677 *A = *B; 678 longjmp(buf, 1); 679} 680 681NOINLINE void BuiltinLongJmpFunc1(jmp_buf buf) { 682 // create three red zones for these two stack objects. 683 int a; 684 int b; 685 686 int *A = Ident(&a); 687 int *B = Ident(&b); 688 *A = *B; 689 __builtin_longjmp((void**)buf, 1); 690} 691 692NOINLINE void UnderscopeLongJmpFunc1(jmp_buf buf) { 693 // create three red zones for these two stack objects. 694 int a; 695 int b; 696 697 int *A = Ident(&a); 698 int *B = Ident(&b); 699 *A = *B; 700 _longjmp(buf, 1); 701} 702 703NOINLINE void SigLongJmpFunc1(sigjmp_buf buf) { 704 // create three red zones for these two stack objects. 705 int a; 706 int b; 707 708 int *A = Ident(&a); 709 int *B = Ident(&b); 710 *A = *B; 711 siglongjmp(buf, 1); 712} 713 714 715NOINLINE void TouchStackFunc() { 716 int a[100]; // long array will intersect with redzones from LongJmpFunc1. 717 int *A = Ident(a); 718 for (int i = 0; i < 100; i++) 719 A[i] = i*i; 720} 721 722// Test that we handle longjmp and do not report fals positives on stack. 723TEST(AddressSanitizer, LongJmpTest) { 724 static jmp_buf buf; 725 if (!setjmp(buf)) { 726 LongJmpFunc1(buf); 727 } else { 728 TouchStackFunc(); 729 } 730} 731 732#if not defined(__ANDROID__) 733TEST(AddressSanitizer, BuiltinLongJmpTest) { 734 static jmp_buf buf; 735 if (!__builtin_setjmp((void**)buf)) { 736 BuiltinLongJmpFunc1(buf); 737 } else { 738 TouchStackFunc(); 739 } 740} 741#endif // not defined(__ANDROID__) 742 743TEST(AddressSanitizer, UnderscopeLongJmpTest) { 744 static jmp_buf buf; 745 if (!_setjmp(buf)) { 746 UnderscopeLongJmpFunc1(buf); 747 } else { 748 TouchStackFunc(); 749 } 750} 751 752TEST(AddressSanitizer, SigLongJmpTest) { 753 static sigjmp_buf buf; 754 if (!sigsetjmp(buf, 1)) { 755 SigLongJmpFunc1(buf); 756 } else { 757 TouchStackFunc(); 758 } 759} 760 761#ifdef __EXCEPTIONS 762NOINLINE void ThrowFunc() { 763 // create three red zones for these two stack objects. 764 int a; 765 int b; 766 767 int *A = Ident(&a); 768 int *B = Ident(&b); 769 *A = *B; 770 ASAN_THROW(1); 771} 772 773TEST(AddressSanitizer, CxxExceptionTest) { 774 if (ASAN_UAR) return; 775 // TODO(kcc): this test crashes on 32-bit for some reason... 776 if (SANITIZER_WORDSIZE == 32) return; 777 try { 778 ThrowFunc(); 779 } catch(...) {} 780 TouchStackFunc(); 781} 782#endif 783 784void *ThreadStackReuseFunc1(void *unused) { 785 // create three red zones for these two stack objects. 786 int a; 787 int b; 788 789 int *A = Ident(&a); 790 int *B = Ident(&b); 791 *A = *B; 792 pthread_exit(0); 793 return 0; 794} 795 796void *ThreadStackReuseFunc2(void *unused) { 797 TouchStackFunc(); 798 return 0; 799} 800 801TEST(AddressSanitizer, ThreadStackReuseTest) { 802 pthread_t t; 803 PTHREAD_CREATE(&t, 0, ThreadStackReuseFunc1, 0); 804 PTHREAD_JOIN(t, 0); 805 PTHREAD_CREATE(&t, 0, ThreadStackReuseFunc2, 0); 806 PTHREAD_JOIN(t, 0); 807} 808 809#if defined(__i386__) || defined(__x86_64__) 810TEST(AddressSanitizer, Store128Test) { 811 char *a = Ident((char*)malloc(Ident(12))); 812 char *p = a; 813 if (((uintptr_t)a % 16) != 0) 814 p = a + 8; 815 assert(((uintptr_t)p % 16) == 0); 816 __m128i value_wide = _mm_set1_epi16(0x1234); 817 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 818 "AddressSanitizer: heap-buffer-overflow"); 819 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 820 "WRITE of size 16"); 821 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 822 "located 0 bytes to the right of 12-byte"); 823 free(a); 824} 825#endif 826 827static string RightOOBErrorMessage(int oob_distance, bool is_write) { 828 assert(oob_distance >= 0); 829 char expected_str[100]; 830 sprintf(expected_str, ASAN_PCRE_DOTALL "%s.*located %d bytes to the right", 831 is_write ? "WRITE" : "READ", oob_distance); 832 return string(expected_str); 833} 834 835static string RightOOBWriteMessage(int oob_distance) { 836 return RightOOBErrorMessage(oob_distance, /*is_write*/true); 837} 838 839static string RightOOBReadMessage(int oob_distance) { 840 return RightOOBErrorMessage(oob_distance, /*is_write*/false); 841} 842 843static string LeftOOBErrorMessage(int oob_distance, bool is_write) { 844 assert(oob_distance > 0); 845 char expected_str[100]; 846 sprintf(expected_str, ASAN_PCRE_DOTALL "%s.*located %d bytes to the left", 847 is_write ? "WRITE" : "READ", oob_distance); 848 return string(expected_str); 849} 850 851static string LeftOOBWriteMessage(int oob_distance) { 852 return LeftOOBErrorMessage(oob_distance, /*is_write*/true); 853} 854 855static string LeftOOBReadMessage(int oob_distance) { 856 return LeftOOBErrorMessage(oob_distance, /*is_write*/false); 857} 858 859static string LeftOOBAccessMessage(int oob_distance) { 860 assert(oob_distance > 0); 861 char expected_str[100]; 862 sprintf(expected_str, "located %d bytes to the left", oob_distance); 863 return string(expected_str); 864} 865 866template<typename T> 867void MemSetOOBTestTemplate(size_t length) { 868 if (length == 0) return; 869 size_t size = Ident(sizeof(T) * length); 870 T *array = Ident((T*)malloc(size)); 871 int element = Ident(42); 872 int zero = Ident(0); 873 // memset interval inside array 874 memset(array, element, size); 875 memset(array, element, size - 1); 876 memset(array + length - 1, element, sizeof(T)); 877 memset(array, element, 1); 878 879 // memset 0 bytes 880 memset(array - 10, element, zero); 881 memset(array - 1, element, zero); 882 memset(array, element, zero); 883 memset(array + length, 0, zero); 884 memset(array + length + 1, 0, zero); 885 886 // try to memset bytes to the right of array 887 EXPECT_DEATH(memset(array, 0, size + 1), 888 RightOOBWriteMessage(0)); 889 EXPECT_DEATH(memset((char*)(array + length) - 1, element, 6), 890 RightOOBWriteMessage(4)); 891 EXPECT_DEATH(memset(array + 1, element, size + sizeof(T)), 892 RightOOBWriteMessage(2 * sizeof(T) - 1)); 893 // whole interval is to the right 894 EXPECT_DEATH(memset(array + length + 1, 0, 10), 895 RightOOBWriteMessage(sizeof(T))); 896 897 // try to memset bytes to the left of array 898 EXPECT_DEATH(memset((char*)array - 1, element, size), 899 LeftOOBWriteMessage(1)); 900 EXPECT_DEATH(memset((char*)array - 5, 0, 6), 901 LeftOOBWriteMessage(5)); 902 EXPECT_DEATH(memset(array - 5, element, size + 5 * sizeof(T)), 903 LeftOOBWriteMessage(5 * sizeof(T))); 904 // whole interval is to the left 905 EXPECT_DEATH(memset(array - 2, 0, sizeof(T)), 906 LeftOOBWriteMessage(2 * sizeof(T))); 907 908 // try to memset bytes both to the left & to the right 909 EXPECT_DEATH(memset((char*)array - 2, element, size + 4), 910 LeftOOBWriteMessage(2)); 911 912 free(array); 913} 914 915TEST(AddressSanitizer, MemSetOOBTest) { 916 MemSetOOBTestTemplate<char>(100); 917 MemSetOOBTestTemplate<int>(5); 918 MemSetOOBTestTemplate<double>(256); 919 // We can test arrays of structres/classes here, but what for? 920} 921 922// Same test for memcpy and memmove functions 923template <typename T, class M> 924void MemTransferOOBTestTemplate(size_t length) { 925 if (length == 0) return; 926 size_t size = Ident(sizeof(T) * length); 927 T *src = Ident((T*)malloc(size)); 928 T *dest = Ident((T*)malloc(size)); 929 int zero = Ident(0); 930 931 // valid transfer of bytes between arrays 932 M::transfer(dest, src, size); 933 M::transfer(dest + 1, src, size - sizeof(T)); 934 M::transfer(dest, src + length - 1, sizeof(T)); 935 M::transfer(dest, src, 1); 936 937 // transfer zero bytes 938 M::transfer(dest - 1, src, 0); 939 M::transfer(dest + length, src, zero); 940 M::transfer(dest, src - 1, zero); 941 M::transfer(dest, src, zero); 942 943 // try to change mem to the right of dest 944 EXPECT_DEATH(M::transfer(dest + 1, src, size), 945 RightOOBWriteMessage(sizeof(T) - 1)); 946 EXPECT_DEATH(M::transfer((char*)(dest + length) - 1, src, 5), 947 RightOOBWriteMessage(3)); 948 949 // try to change mem to the left of dest 950 EXPECT_DEATH(M::transfer(dest - 2, src, size), 951 LeftOOBWriteMessage(2 * sizeof(T))); 952 EXPECT_DEATH(M::transfer((char*)dest - 3, src, 4), 953 LeftOOBWriteMessage(3)); 954 955 // try to access mem to the right of src 956 EXPECT_DEATH(M::transfer(dest, src + 2, size), 957 RightOOBReadMessage(2 * sizeof(T) - 1)); 958 EXPECT_DEATH(M::transfer(dest, (char*)(src + length) - 3, 6), 959 RightOOBReadMessage(2)); 960 961 // try to access mem to the left of src 962 EXPECT_DEATH(M::transfer(dest, src - 1, size), 963 LeftOOBReadMessage(sizeof(T))); 964 EXPECT_DEATH(M::transfer(dest, (char*)src - 6, 7), 965 LeftOOBReadMessage(6)); 966 967 // Generally we don't need to test cases where both accessing src and writing 968 // to dest address to poisoned memory. 969 970 T *big_src = Ident((T*)malloc(size * 2)); 971 T *big_dest = Ident((T*)malloc(size * 2)); 972 // try to change mem to both sides of dest 973 EXPECT_DEATH(M::transfer(dest - 1, big_src, size * 2), 974 LeftOOBWriteMessage(sizeof(T))); 975 // try to access mem to both sides of src 976 EXPECT_DEATH(M::transfer(big_dest, src - 2, size * 2), 977 LeftOOBReadMessage(2 * sizeof(T))); 978 979 free(src); 980 free(dest); 981 free(big_src); 982 free(big_dest); 983} 984 985class MemCpyWrapper { 986 public: 987 static void* transfer(void *to, const void *from, size_t size) { 988 return memcpy(to, from, size); 989 } 990}; 991TEST(AddressSanitizer, MemCpyOOBTest) { 992 MemTransferOOBTestTemplate<char, MemCpyWrapper>(100); 993 MemTransferOOBTestTemplate<int, MemCpyWrapper>(1024); 994} 995 996class MemMoveWrapper { 997 public: 998 static void* transfer(void *to, const void *from, size_t size) { 999 return memmove(to, from, size); 1000 } 1001}; 1002TEST(AddressSanitizer, MemMoveOOBTest) { 1003 MemTransferOOBTestTemplate<char, MemMoveWrapper>(100); 1004 MemTransferOOBTestTemplate<int, MemMoveWrapper>(1024); 1005} 1006 1007// Tests for string functions 1008 1009// Used for string functions tests 1010static char global_string[] = "global"; 1011static size_t global_string_length = 6; 1012 1013// Input to a test is a zero-terminated string str with given length 1014// Accesses to the bytes to the left and to the right of str 1015// are presumed to produce OOB errors 1016void StrLenOOBTestTemplate(char *str, size_t length, bool is_global) { 1017 // Normal strlen calls 1018 EXPECT_EQ(strlen(str), length); 1019 if (length > 0) { 1020 EXPECT_EQ(length - 1, strlen(str + 1)); 1021 EXPECT_EQ(0U, strlen(str + length)); 1022 } 1023 // Arg of strlen is not malloced, OOB access 1024 if (!is_global) { 1025 // We don't insert RedZones to the left of global variables 1026 EXPECT_DEATH(Ident(strlen(str - 1)), LeftOOBReadMessage(1)); 1027 EXPECT_DEATH(Ident(strlen(str - 5)), LeftOOBReadMessage(5)); 1028 } 1029 EXPECT_DEATH(Ident(strlen(str + length + 1)), RightOOBReadMessage(0)); 1030 // Overwrite terminator 1031 str[length] = 'a'; 1032 // String is not zero-terminated, strlen will lead to OOB access 1033 EXPECT_DEATH(Ident(strlen(str)), RightOOBReadMessage(0)); 1034 EXPECT_DEATH(Ident(strlen(str + length)), RightOOBReadMessage(0)); 1035 // Restore terminator 1036 str[length] = 0; 1037} 1038TEST(AddressSanitizer, StrLenOOBTest) { 1039 // Check heap-allocated string 1040 size_t length = Ident(10); 1041 char *heap_string = Ident((char*)malloc(length + 1)); 1042 char stack_string[10 + 1]; 1043 break_optimization(&stack_string); 1044 for (size_t i = 0; i < length; i++) { 1045 heap_string[i] = 'a'; 1046 stack_string[i] = 'b'; 1047 } 1048 heap_string[length] = 0; 1049 stack_string[length] = 0; 1050 StrLenOOBTestTemplate(heap_string, length, false); 1051 // TODO(samsonov): Fix expected messages in StrLenOOBTestTemplate to 1052 // make test for stack_string work. Or move it to output tests. 1053 // StrLenOOBTestTemplate(stack_string, length, false); 1054 StrLenOOBTestTemplate(global_string, global_string_length, true); 1055 free(heap_string); 1056} 1057 1058static inline char* MallocAndMemsetString(size_t size, char ch) { 1059 char *s = Ident((char*)malloc(size)); 1060 memset(s, ch, size); 1061 return s; 1062} 1063static inline char* MallocAndMemsetString(size_t size) { 1064 return MallocAndMemsetString(size, 'z'); 1065} 1066 1067#ifndef __APPLE__ 1068TEST(AddressSanitizer, StrNLenOOBTest) { 1069 size_t size = Ident(123); 1070 char *str = MallocAndMemsetString(size); 1071 // Normal strnlen calls. 1072 Ident(strnlen(str - 1, 0)); 1073 Ident(strnlen(str, size)); 1074 Ident(strnlen(str + size - 1, 1)); 1075 str[size - 1] = '\0'; 1076 Ident(strnlen(str, 2 * size)); 1077 // Argument points to not allocated memory. 1078 EXPECT_DEATH(Ident(strnlen(str - 1, 1)), LeftOOBReadMessage(1)); 1079 EXPECT_DEATH(Ident(strnlen(str + size, 1)), RightOOBReadMessage(0)); 1080 // Overwrite the terminating '\0' and hit unallocated memory. 1081 str[size - 1] = 'z'; 1082 EXPECT_DEATH(Ident(strnlen(str, size + 1)), RightOOBReadMessage(0)); 1083 free(str); 1084} 1085#endif 1086 1087TEST(AddressSanitizer, StrDupOOBTest) { 1088 size_t size = Ident(42); 1089 char *str = MallocAndMemsetString(size); 1090 char *new_str; 1091 // Normal strdup calls. 1092 str[size - 1] = '\0'; 1093 new_str = strdup(str); 1094 free(new_str); 1095 new_str = strdup(str + size - 1); 1096 free(new_str); 1097 // Argument points to not allocated memory. 1098 EXPECT_DEATH(Ident(strdup(str - 1)), LeftOOBReadMessage(1)); 1099 EXPECT_DEATH(Ident(strdup(str + size)), RightOOBReadMessage(0)); 1100 // Overwrite the terminating '\0' and hit unallocated memory. 1101 str[size - 1] = 'z'; 1102 EXPECT_DEATH(Ident(strdup(str)), RightOOBReadMessage(0)); 1103 free(str); 1104} 1105 1106TEST(AddressSanitizer, StrCpyOOBTest) { 1107 size_t to_size = Ident(30); 1108 size_t from_size = Ident(6); // less than to_size 1109 char *to = Ident((char*)malloc(to_size)); 1110 char *from = Ident((char*)malloc(from_size)); 1111 // Normal strcpy calls. 1112 strcpy(from, "hello"); 1113 strcpy(to, from); 1114 strcpy(to + to_size - from_size, from); 1115 // Length of "from" is too small. 1116 EXPECT_DEATH(Ident(strcpy(from, "hello2")), RightOOBWriteMessage(0)); 1117 // "to" or "from" points to not allocated memory. 1118 EXPECT_DEATH(Ident(strcpy(to - 1, from)), LeftOOBWriteMessage(1)); 1119 EXPECT_DEATH(Ident(strcpy(to, from - 1)), LeftOOBReadMessage(1)); 1120 EXPECT_DEATH(Ident(strcpy(to, from + from_size)), RightOOBReadMessage(0)); 1121 EXPECT_DEATH(Ident(strcpy(to + to_size, from)), RightOOBWriteMessage(0)); 1122 // Overwrite the terminating '\0' character and hit unallocated memory. 1123 from[from_size - 1] = '!'; 1124 EXPECT_DEATH(Ident(strcpy(to, from)), RightOOBReadMessage(0)); 1125 free(to); 1126 free(from); 1127} 1128 1129TEST(AddressSanitizer, StrNCpyOOBTest) { 1130 size_t to_size = Ident(20); 1131 size_t from_size = Ident(6); // less than to_size 1132 char *to = Ident((char*)malloc(to_size)); 1133 // From is a zero-terminated string "hello\0" of length 6 1134 char *from = Ident((char*)malloc(from_size)); 1135 strcpy(from, "hello"); 1136 // copy 0 bytes 1137 strncpy(to, from, 0); 1138 strncpy(to - 1, from - 1, 0); 1139 // normal strncpy calls 1140 strncpy(to, from, from_size); 1141 strncpy(to, from, to_size); 1142 strncpy(to, from + from_size - 1, to_size); 1143 strncpy(to + to_size - 1, from, 1); 1144 // One of {to, from} points to not allocated memory 1145 EXPECT_DEATH(Ident(strncpy(to, from - 1, from_size)), 1146 LeftOOBReadMessage(1)); 1147 EXPECT_DEATH(Ident(strncpy(to - 1, from, from_size)), 1148 LeftOOBWriteMessage(1)); 1149 EXPECT_DEATH(Ident(strncpy(to, from + from_size, 1)), 1150 RightOOBReadMessage(0)); 1151 EXPECT_DEATH(Ident(strncpy(to + to_size, from, 1)), 1152 RightOOBWriteMessage(0)); 1153 // Length of "to" is too small 1154 EXPECT_DEATH(Ident(strncpy(to + to_size - from_size + 1, from, from_size)), 1155 RightOOBWriteMessage(0)); 1156 EXPECT_DEATH(Ident(strncpy(to + 1, from, to_size)), 1157 RightOOBWriteMessage(0)); 1158 // Overwrite terminator in from 1159 from[from_size - 1] = '!'; 1160 // normal strncpy call 1161 strncpy(to, from, from_size); 1162 // Length of "from" is too small 1163 EXPECT_DEATH(Ident(strncpy(to, from, to_size)), 1164 RightOOBReadMessage(0)); 1165 free(to); 1166 free(from); 1167} 1168 1169// Users may have different definitions of "strchr" and "index", so provide 1170// function pointer typedefs and overload RunStrChrTest implementation. 1171// We can't use macro for RunStrChrTest body here, as this macro would 1172// confuse EXPECT_DEATH gtest macro. 1173typedef char*(*PointerToStrChr1)(const char*, int); 1174typedef char*(*PointerToStrChr2)(char*, int); 1175 1176USED static void RunStrChrTest(PointerToStrChr1 StrChr) { 1177 size_t size = Ident(100); 1178 char *str = MallocAndMemsetString(size); 1179 str[10] = 'q'; 1180 str[11] = '\0'; 1181 EXPECT_EQ(str, StrChr(str, 'z')); 1182 EXPECT_EQ(str + 10, StrChr(str, 'q')); 1183 EXPECT_EQ(NULL, StrChr(str, 'a')); 1184 // StrChr argument points to not allocated memory. 1185 EXPECT_DEATH(Ident(StrChr(str - 1, 'z')), LeftOOBReadMessage(1)); 1186 EXPECT_DEATH(Ident(StrChr(str + size, 'z')), RightOOBReadMessage(0)); 1187 // Overwrite the terminator and hit not allocated memory. 1188 str[11] = 'z'; 1189 EXPECT_DEATH(Ident(StrChr(str, 'a')), RightOOBReadMessage(0)); 1190 free(str); 1191} 1192USED static void RunStrChrTest(PointerToStrChr2 StrChr) { 1193 size_t size = Ident(100); 1194 char *str = MallocAndMemsetString(size); 1195 str[10] = 'q'; 1196 str[11] = '\0'; 1197 EXPECT_EQ(str, StrChr(str, 'z')); 1198 EXPECT_EQ(str + 10, StrChr(str, 'q')); 1199 EXPECT_EQ(NULL, StrChr(str, 'a')); 1200 // StrChr argument points to not allocated memory. 1201 EXPECT_DEATH(Ident(StrChr(str - 1, 'z')), LeftOOBReadMessage(1)); 1202 EXPECT_DEATH(Ident(StrChr(str + size, 'z')), RightOOBReadMessage(0)); 1203 // Overwrite the terminator and hit not allocated memory. 1204 str[11] = 'z'; 1205 EXPECT_DEATH(Ident(StrChr(str, 'a')), RightOOBReadMessage(0)); 1206 free(str); 1207} 1208 1209TEST(AddressSanitizer, StrChrAndIndexOOBTest) { 1210 RunStrChrTest(&strchr); 1211 RunStrChrTest(&index); 1212} 1213 1214TEST(AddressSanitizer, StrCmpAndFriendsLogicTest) { 1215 // strcmp 1216 EXPECT_EQ(0, strcmp("", "")); 1217 EXPECT_EQ(0, strcmp("abcd", "abcd")); 1218 EXPECT_GT(0, strcmp("ab", "ac")); 1219 EXPECT_GT(0, strcmp("abc", "abcd")); 1220 EXPECT_LT(0, strcmp("acc", "abc")); 1221 EXPECT_LT(0, strcmp("abcd", "abc")); 1222 1223 // strncmp 1224 EXPECT_EQ(0, strncmp("a", "b", 0)); 1225 EXPECT_EQ(0, strncmp("abcd", "abcd", 10)); 1226 EXPECT_EQ(0, strncmp("abcd", "abcef", 3)); 1227 EXPECT_GT(0, strncmp("abcde", "abcfa", 4)); 1228 EXPECT_GT(0, strncmp("a", "b", 5)); 1229 EXPECT_GT(0, strncmp("bc", "bcde", 4)); 1230 EXPECT_LT(0, strncmp("xyz", "xyy", 10)); 1231 EXPECT_LT(0, strncmp("baa", "aaa", 1)); 1232 EXPECT_LT(0, strncmp("zyx", "", 2)); 1233 1234 // strcasecmp 1235 EXPECT_EQ(0, strcasecmp("", "")); 1236 EXPECT_EQ(0, strcasecmp("zzz", "zzz")); 1237 EXPECT_EQ(0, strcasecmp("abCD", "ABcd")); 1238 EXPECT_GT(0, strcasecmp("aB", "Ac")); 1239 EXPECT_GT(0, strcasecmp("ABC", "ABCd")); 1240 EXPECT_LT(0, strcasecmp("acc", "abc")); 1241 EXPECT_LT(0, strcasecmp("ABCd", "abc")); 1242 1243 // strncasecmp 1244 EXPECT_EQ(0, strncasecmp("a", "b", 0)); 1245 EXPECT_EQ(0, strncasecmp("abCD", "ABcd", 10)); 1246 EXPECT_EQ(0, strncasecmp("abCd", "ABcef", 3)); 1247 EXPECT_GT(0, strncasecmp("abcde", "ABCfa", 4)); 1248 EXPECT_GT(0, strncasecmp("a", "B", 5)); 1249 EXPECT_GT(0, strncasecmp("bc", "BCde", 4)); 1250 EXPECT_LT(0, strncasecmp("xyz", "xyy", 10)); 1251 EXPECT_LT(0, strncasecmp("Baa", "aaa", 1)); 1252 EXPECT_LT(0, strncasecmp("zyx", "", 2)); 1253 1254 // memcmp 1255 EXPECT_EQ(0, memcmp("a", "b", 0)); 1256 EXPECT_EQ(0, memcmp("ab\0c", "ab\0c", 4)); 1257 EXPECT_GT(0, memcmp("\0ab", "\0ac", 3)); 1258 EXPECT_GT(0, memcmp("abb\0", "abba", 4)); 1259 EXPECT_LT(0, memcmp("ab\0cd", "ab\0c\0", 5)); 1260 EXPECT_LT(0, memcmp("zza", "zyx", 3)); 1261} 1262 1263typedef int(*PointerToStrCmp)(const char*, const char*); 1264void RunStrCmpTest(PointerToStrCmp StrCmp) { 1265 size_t size = Ident(100); 1266 char *s1 = MallocAndMemsetString(size); 1267 char *s2 = MallocAndMemsetString(size); 1268 s1[size - 1] = '\0'; 1269 s2[size - 1] = '\0'; 1270 // Normal StrCmp calls 1271 Ident(StrCmp(s1, s2)); 1272 Ident(StrCmp(s1, s2 + size - 1)); 1273 Ident(StrCmp(s1 + size - 1, s2 + size - 1)); 1274 s1[size - 1] = 'z'; 1275 s2[size - 1] = 'x'; 1276 Ident(StrCmp(s1, s2)); 1277 // One of arguments points to not allocated memory. 1278 EXPECT_DEATH(Ident(StrCmp)(s1 - 1, s2), LeftOOBReadMessage(1)); 1279 EXPECT_DEATH(Ident(StrCmp)(s1, s2 - 1), LeftOOBReadMessage(1)); 1280 EXPECT_DEATH(Ident(StrCmp)(s1 + size, s2), RightOOBReadMessage(0)); 1281 EXPECT_DEATH(Ident(StrCmp)(s1, s2 + size), RightOOBReadMessage(0)); 1282 // Hit unallocated memory and die. 1283 s2[size - 1] = 'z'; 1284 EXPECT_DEATH(Ident(StrCmp)(s1, s1), RightOOBReadMessage(0)); 1285 EXPECT_DEATH(Ident(StrCmp)(s1 + size - 1, s2), RightOOBReadMessage(0)); 1286 free(s1); 1287 free(s2); 1288} 1289 1290TEST(AddressSanitizer, StrCmpOOBTest) { 1291 RunStrCmpTest(&strcmp); 1292} 1293 1294TEST(AddressSanitizer, StrCaseCmpOOBTest) { 1295 RunStrCmpTest(&strcasecmp); 1296} 1297 1298typedef int(*PointerToStrNCmp)(const char*, const char*, size_t); 1299void RunStrNCmpTest(PointerToStrNCmp StrNCmp) { 1300 size_t size = Ident(100); 1301 char *s1 = MallocAndMemsetString(size); 1302 char *s2 = MallocAndMemsetString(size); 1303 s1[size - 1] = '\0'; 1304 s2[size - 1] = '\0'; 1305 // Normal StrNCmp calls 1306 Ident(StrNCmp(s1, s2, size + 2)); 1307 s1[size - 1] = 'z'; 1308 s2[size - 1] = 'x'; 1309 Ident(StrNCmp(s1 + size - 2, s2 + size - 2, size)); 1310 s2[size - 1] = 'z'; 1311 Ident(StrNCmp(s1 - 1, s2 - 1, 0)); 1312 Ident(StrNCmp(s1 + size - 1, s2 + size - 1, 1)); 1313 // One of arguments points to not allocated memory. 1314 EXPECT_DEATH(Ident(StrNCmp)(s1 - 1, s2, 1), LeftOOBReadMessage(1)); 1315 EXPECT_DEATH(Ident(StrNCmp)(s1, s2 - 1, 1), LeftOOBReadMessage(1)); 1316 EXPECT_DEATH(Ident(StrNCmp)(s1 + size, s2, 1), RightOOBReadMessage(0)); 1317 EXPECT_DEATH(Ident(StrNCmp)(s1, s2 + size, 1), RightOOBReadMessage(0)); 1318 // Hit unallocated memory and die. 1319 EXPECT_DEATH(Ident(StrNCmp)(s1 + 1, s2 + 1, size), RightOOBReadMessage(0)); 1320 EXPECT_DEATH(Ident(StrNCmp)(s1 + size - 1, s2, 2), RightOOBReadMessage(0)); 1321 free(s1); 1322 free(s2); 1323} 1324 1325TEST(AddressSanitizer, StrNCmpOOBTest) { 1326 RunStrNCmpTest(&strncmp); 1327} 1328 1329TEST(AddressSanitizer, StrNCaseCmpOOBTest) { 1330 RunStrNCmpTest(&strncasecmp); 1331} 1332 1333TEST(AddressSanitizer, MemCmpOOBTest) { 1334 size_t size = Ident(100); 1335 char *s1 = MallocAndMemsetString(size); 1336 char *s2 = MallocAndMemsetString(size); 1337 // Normal memcmp calls. 1338 Ident(memcmp(s1, s2, size)); 1339 Ident(memcmp(s1 + size - 1, s2 + size - 1, 1)); 1340 Ident(memcmp(s1 - 1, s2 - 1, 0)); 1341 // One of arguments points to not allocated memory. 1342 EXPECT_DEATH(Ident(memcmp)(s1 - 1, s2, 1), LeftOOBReadMessage(1)); 1343 EXPECT_DEATH(Ident(memcmp)(s1, s2 - 1, 1), LeftOOBReadMessage(1)); 1344 EXPECT_DEATH(Ident(memcmp)(s1 + size, s2, 1), RightOOBReadMessage(0)); 1345 EXPECT_DEATH(Ident(memcmp)(s1, s2 + size, 1), RightOOBReadMessage(0)); 1346 // Hit unallocated memory and die. 1347 EXPECT_DEATH(Ident(memcmp)(s1 + 1, s2 + 1, size), RightOOBReadMessage(0)); 1348 EXPECT_DEATH(Ident(memcmp)(s1 + size - 1, s2, 2), RightOOBReadMessage(0)); 1349 // Zero bytes are not terminators and don't prevent from OOB. 1350 s1[size - 1] = '\0'; 1351 s2[size - 1] = '\0'; 1352 EXPECT_DEATH(Ident(memcmp)(s1, s2, size + 1), RightOOBReadMessage(0)); 1353 free(s1); 1354 free(s2); 1355} 1356 1357TEST(AddressSanitizer, StrCatOOBTest) { 1358 // strcat() reads strlen(to) bytes from |to| before concatenating. 1359 size_t to_size = Ident(100); 1360 char *to = MallocAndMemsetString(to_size); 1361 to[0] = '\0'; 1362 size_t from_size = Ident(20); 1363 char *from = MallocAndMemsetString(from_size); 1364 from[from_size - 1] = '\0'; 1365 // Normal strcat calls. 1366 strcat(to, from); 1367 strcat(to, from); 1368 strcat(to + from_size, from + from_size - 2); 1369 // Passing an invalid pointer is an error even when concatenating an empty 1370 // string. 1371 EXPECT_DEATH(strcat(to - 1, from + from_size - 1), LeftOOBAccessMessage(1)); 1372 // One of arguments points to not allocated memory. 1373 EXPECT_DEATH(strcat(to - 1, from), LeftOOBAccessMessage(1)); 1374 EXPECT_DEATH(strcat(to, from - 1), LeftOOBReadMessage(1)); 1375 EXPECT_DEATH(strcat(to + to_size, from), RightOOBWriteMessage(0)); 1376 EXPECT_DEATH(strcat(to, from + from_size), RightOOBReadMessage(0)); 1377 1378 // "from" is not zero-terminated. 1379 from[from_size - 1] = 'z'; 1380 EXPECT_DEATH(strcat(to, from), RightOOBReadMessage(0)); 1381 from[from_size - 1] = '\0'; 1382 // "to" is not zero-terminated. 1383 memset(to, 'z', to_size); 1384 EXPECT_DEATH(strcat(to, from), RightOOBWriteMessage(0)); 1385 // "to" is too short to fit "from". 1386 to[to_size - from_size + 1] = '\0'; 1387 EXPECT_DEATH(strcat(to, from), RightOOBWriteMessage(0)); 1388 // length of "to" is just enough. 1389 strcat(to, from + 1); 1390 1391 free(to); 1392 free(from); 1393} 1394 1395TEST(AddressSanitizer, StrNCatOOBTest) { 1396 // strncat() reads strlen(to) bytes from |to| before concatenating. 1397 size_t to_size = Ident(100); 1398 char *to = MallocAndMemsetString(to_size); 1399 to[0] = '\0'; 1400 size_t from_size = Ident(20); 1401 char *from = MallocAndMemsetString(from_size); 1402 // Normal strncat calls. 1403 strncat(to, from, 0); 1404 strncat(to, from, from_size); 1405 from[from_size - 1] = '\0'; 1406 strncat(to, from, 2 * from_size); 1407 // Catenating empty string with an invalid string is still an error. 1408 EXPECT_DEATH(strncat(to - 1, from, 0), LeftOOBAccessMessage(1)); 1409 strncat(to, from + from_size - 1, 10); 1410 // One of arguments points to not allocated memory. 1411 EXPECT_DEATH(strncat(to - 1, from, 2), LeftOOBAccessMessage(1)); 1412 EXPECT_DEATH(strncat(to, from - 1, 2), LeftOOBReadMessage(1)); 1413 EXPECT_DEATH(strncat(to + to_size, from, 2), RightOOBWriteMessage(0)); 1414 EXPECT_DEATH(strncat(to, from + from_size, 2), RightOOBReadMessage(0)); 1415 1416 memset(from, 'z', from_size); 1417 memset(to, 'z', to_size); 1418 to[0] = '\0'; 1419 // "from" is too short. 1420 EXPECT_DEATH(strncat(to, from, from_size + 1), RightOOBReadMessage(0)); 1421 // "to" is not zero-terminated. 1422 EXPECT_DEATH(strncat(to + 1, from, 1), RightOOBWriteMessage(0)); 1423 // "to" is too short to fit "from". 1424 to[0] = 'z'; 1425 to[to_size - from_size + 1] = '\0'; 1426 EXPECT_DEATH(strncat(to, from, from_size - 1), RightOOBWriteMessage(0)); 1427 // "to" is just enough. 1428 strncat(to, from, from_size - 2); 1429 1430 free(to); 1431 free(from); 1432} 1433 1434static string OverlapErrorMessage(const string &func) { 1435 return func + "-param-overlap"; 1436} 1437 1438TEST(AddressSanitizer, StrArgsOverlapTest) { 1439 size_t size = Ident(100); 1440 char *str = Ident((char*)malloc(size)); 1441 1442// Do not check memcpy() on OS X 10.7 and later, where it actually aliases 1443// memmove(). 1444#if !defined(__APPLE__) || !defined(MAC_OS_X_VERSION_10_7) || \ 1445 (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7) 1446 // Check "memcpy". Use Ident() to avoid inlining. 1447 memset(str, 'z', size); 1448 Ident(memcpy)(str + 1, str + 11, 10); 1449 Ident(memcpy)(str, str, 0); 1450 EXPECT_DEATH(Ident(memcpy)(str, str + 14, 15), OverlapErrorMessage("memcpy")); 1451 EXPECT_DEATH(Ident(memcpy)(str + 14, str, 15), OverlapErrorMessage("memcpy")); 1452#endif 1453 1454 // We do not treat memcpy with to==from as a bug. 1455 // See http://llvm.org/bugs/show_bug.cgi?id=11763. 1456 // EXPECT_DEATH(Ident(memcpy)(str + 20, str + 20, 1), 1457 // OverlapErrorMessage("memcpy")); 1458 1459 // Check "strcpy". 1460 memset(str, 'z', size); 1461 str[9] = '\0'; 1462 strcpy(str + 10, str); 1463 EXPECT_DEATH(strcpy(str + 9, str), OverlapErrorMessage("strcpy")); 1464 EXPECT_DEATH(strcpy(str, str + 4), OverlapErrorMessage("strcpy")); 1465 strcpy(str, str + 5); 1466 1467 // Check "strncpy". 1468 memset(str, 'z', size); 1469 strncpy(str, str + 10, 10); 1470 EXPECT_DEATH(strncpy(str, str + 9, 10), OverlapErrorMessage("strncpy")); 1471 EXPECT_DEATH(strncpy(str + 9, str, 10), OverlapErrorMessage("strncpy")); 1472 str[10] = '\0'; 1473 strncpy(str + 11, str, 20); 1474 EXPECT_DEATH(strncpy(str + 10, str, 20), OverlapErrorMessage("strncpy")); 1475 1476 // Check "strcat". 1477 memset(str, 'z', size); 1478 str[10] = '\0'; 1479 str[20] = '\0'; 1480 strcat(str, str + 10); 1481 EXPECT_DEATH(strcat(str, str + 11), OverlapErrorMessage("strcat")); 1482 str[10] = '\0'; 1483 strcat(str + 11, str); 1484 EXPECT_DEATH(strcat(str, str + 9), OverlapErrorMessage("strcat")); 1485 EXPECT_DEATH(strcat(str + 9, str), OverlapErrorMessage("strcat")); 1486 EXPECT_DEATH(strcat(str + 10, str), OverlapErrorMessage("strcat")); 1487 1488 // Check "strncat". 1489 memset(str, 'z', size); 1490 str[10] = '\0'; 1491 strncat(str, str + 10, 10); // from is empty 1492 EXPECT_DEATH(strncat(str, str + 11, 10), OverlapErrorMessage("strncat")); 1493 str[10] = '\0'; 1494 str[20] = '\0'; 1495 strncat(str + 5, str, 5); 1496 str[10] = '\0'; 1497 EXPECT_DEATH(strncat(str + 5, str, 6), OverlapErrorMessage("strncat")); 1498 EXPECT_DEATH(strncat(str, str + 9, 10), OverlapErrorMessage("strncat")); 1499 1500 free(str); 1501} 1502 1503void CallAtoi(const char *nptr) { 1504 Ident(atoi(nptr)); 1505} 1506void CallAtol(const char *nptr) { 1507 Ident(atol(nptr)); 1508} 1509void CallAtoll(const char *nptr) { 1510 Ident(atoll(nptr)); 1511} 1512typedef void(*PointerToCallAtoi)(const char*); 1513 1514void RunAtoiOOBTest(PointerToCallAtoi Atoi) { 1515 char *array = MallocAndMemsetString(10, '1'); 1516 // Invalid pointer to the string. 1517 EXPECT_DEATH(Atoi(array + 11), RightOOBReadMessage(1)); 1518 EXPECT_DEATH(Atoi(array - 1), LeftOOBReadMessage(1)); 1519 // Die if a buffer doesn't have terminating NULL. 1520 EXPECT_DEATH(Atoi(array), RightOOBReadMessage(0)); 1521 // Make last symbol a terminating NULL or other non-digit. 1522 array[9] = '\0'; 1523 Atoi(array); 1524 array[9] = 'a'; 1525 Atoi(array); 1526 Atoi(array + 9); 1527 // Sometimes we need to detect overflow if no digits are found. 1528 memset(array, ' ', 10); 1529 EXPECT_DEATH(Atoi(array), RightOOBReadMessage(0)); 1530 array[9] = '-'; 1531 EXPECT_DEATH(Atoi(array), RightOOBReadMessage(0)); 1532 EXPECT_DEATH(Atoi(array + 9), RightOOBReadMessage(0)); 1533 array[8] = '-'; 1534 Atoi(array); 1535 free(array); 1536} 1537 1538TEST(AddressSanitizer, AtoiAndFriendsOOBTest) { 1539 RunAtoiOOBTest(&CallAtoi); 1540 RunAtoiOOBTest(&CallAtol); 1541 RunAtoiOOBTest(&CallAtoll); 1542} 1543 1544void CallStrtol(const char *nptr, char **endptr, int base) { 1545 Ident(strtol(nptr, endptr, base)); 1546} 1547void CallStrtoll(const char *nptr, char **endptr, int base) { 1548 Ident(strtoll(nptr, endptr, base)); 1549} 1550typedef void(*PointerToCallStrtol)(const char*, char**, int); 1551 1552void RunStrtolOOBTest(PointerToCallStrtol Strtol) { 1553 char *array = MallocAndMemsetString(3); 1554 char *endptr = NULL; 1555 array[0] = '1'; 1556 array[1] = '2'; 1557 array[2] = '3'; 1558 // Invalid pointer to the string. 1559 EXPECT_DEATH(Strtol(array + 3, NULL, 0), RightOOBReadMessage(0)); 1560 EXPECT_DEATH(Strtol(array - 1, NULL, 0), LeftOOBReadMessage(1)); 1561 // Buffer overflow if there is no terminating null (depends on base). 1562 Strtol(array, &endptr, 3); 1563 EXPECT_EQ(array + 2, endptr); 1564 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBReadMessage(0)); 1565 array[2] = 'z'; 1566 Strtol(array, &endptr, 35); 1567 EXPECT_EQ(array + 2, endptr); 1568 EXPECT_DEATH(Strtol(array, NULL, 36), RightOOBReadMessage(0)); 1569 // Add terminating zero to get rid of overflow. 1570 array[2] = '\0'; 1571 Strtol(array, NULL, 36); 1572 // Don't check for overflow if base is invalid. 1573 Strtol(array - 1, NULL, -1); 1574 Strtol(array + 3, NULL, 1); 1575 // Sometimes we need to detect overflow if no digits are found. 1576 array[0] = array[1] = array[2] = ' '; 1577 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBReadMessage(0)); 1578 array[2] = '+'; 1579 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBReadMessage(0)); 1580 array[2] = '-'; 1581 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBReadMessage(0)); 1582 array[1] = '+'; 1583 Strtol(array, NULL, 0); 1584 array[1] = array[2] = 'z'; 1585 Strtol(array, &endptr, 0); 1586 EXPECT_EQ(array, endptr); 1587 Strtol(array + 2, NULL, 0); 1588 EXPECT_EQ(array, endptr); 1589 free(array); 1590} 1591 1592TEST(AddressSanitizer, StrtollOOBTest) { 1593 RunStrtolOOBTest(&CallStrtoll); 1594} 1595TEST(AddressSanitizer, StrtolOOBTest) { 1596 RunStrtolOOBTest(&CallStrtol); 1597} 1598 1599// At the moment we instrument memcpy/memove/memset calls at compile time so we 1600// can't handle OOB error if these functions are called by pointer, see disabled 1601// MemIntrinsicCallByPointerTest below 1602typedef void*(*PointerToMemTransfer)(void*, const void*, size_t); 1603typedef void*(*PointerToMemSet)(void*, int, size_t); 1604 1605void CallMemSetByPointer(PointerToMemSet MemSet) { 1606 size_t size = Ident(100); 1607 char *array = Ident((char*)malloc(size)); 1608 EXPECT_DEATH(MemSet(array, 0, 101), RightOOBWriteMessage(0)); 1609 free(array); 1610} 1611 1612void CallMemTransferByPointer(PointerToMemTransfer MemTransfer) { 1613 size_t size = Ident(100); 1614 char *src = Ident((char*)malloc(size)); 1615 char *dst = Ident((char*)malloc(size)); 1616 EXPECT_DEATH(MemTransfer(dst, src, 101), RightOOBWriteMessage(0)); 1617 free(src); 1618 free(dst); 1619} 1620 1621TEST(AddressSanitizer, DISABLED_MemIntrinsicCallByPointerTest) { 1622 CallMemSetByPointer(&memset); 1623 CallMemTransferByPointer(&memcpy); 1624 CallMemTransferByPointer(&memmove); 1625} 1626 1627#if defined(__linux__) && !defined(ANDROID) && !defined(__ANDROID__) 1628TEST(AddressSanitizer, pread) { 1629 char *x = new char[10]; 1630 int fd = open("/proc/self/stat", O_RDONLY); 1631 ASSERT_GT(fd, 0); 1632 EXPECT_DEATH(pread(fd, x, 15, 0), 1633 ASAN_PCRE_DOTALL 1634 "AddressSanitizer: heap-buffer-overflow" 1635 ".* is located 4 bytes to the right of 10-byte region"); 1636 close(fd); 1637 delete [] x; 1638} 1639 1640TEST(AddressSanitizer, pread64) { 1641 char *x = new char[10]; 1642 int fd = open("/proc/self/stat", O_RDONLY); 1643 ASSERT_GT(fd, 0); 1644 EXPECT_DEATH(pread64(fd, x, 15, 0), 1645 ASAN_PCRE_DOTALL 1646 "AddressSanitizer: heap-buffer-overflow" 1647 ".* is located 4 bytes to the right of 10-byte region"); 1648 close(fd); 1649 delete [] x; 1650} 1651 1652TEST(AddressSanitizer, read) { 1653 char *x = new char[10]; 1654 int fd = open("/proc/self/stat", O_RDONLY); 1655 ASSERT_GT(fd, 0); 1656 EXPECT_DEATH(read(fd, x, 15), 1657 ASAN_PCRE_DOTALL 1658 "AddressSanitizer: heap-buffer-overflow" 1659 ".* is located 4 bytes to the right of 10-byte region"); 1660 close(fd); 1661 delete [] x; 1662} 1663 1664#endif // defined(__linux__) && !defined(ANDROID) && !defined(__ANDROID__) 1665 1666// This test case fails 1667// Clang optimizes memcpy/memset calls which lead to unaligned access 1668TEST(AddressSanitizer, DISABLED_MemIntrinsicUnalignedAccessTest) { 1669 int size = Ident(4096); 1670 char *s = Ident((char*)malloc(size)); 1671 EXPECT_DEATH(memset(s + size - 1, 0, 2), RightOOBWriteMessage(0)); 1672 free(s); 1673} 1674 1675// TODO(samsonov): Add a test with malloc(0) 1676// TODO(samsonov): Add tests for str* and mem* functions. 1677 1678NOINLINE static int LargeFunction(bool do_bad_access) { 1679 int *x = new int[100]; 1680 x[0]++; 1681 x[1]++; 1682 x[2]++; 1683 x[3]++; 1684 x[4]++; 1685 x[5]++; 1686 x[6]++; 1687 x[7]++; 1688 x[8]++; 1689 x[9]++; 1690 1691 x[do_bad_access ? 100 : 0]++; int res = __LINE__; 1692 1693 x[10]++; 1694 x[11]++; 1695 x[12]++; 1696 x[13]++; 1697 x[14]++; 1698 x[15]++; 1699 x[16]++; 1700 x[17]++; 1701 x[18]++; 1702 x[19]++; 1703 1704 delete x; 1705 return res; 1706} 1707 1708// Test the we have correct debug info for the failing instruction. 1709// This test requires the in-process symbolizer to be enabled by default. 1710TEST(AddressSanitizer, DISABLED_LargeFunctionSymbolizeTest) { 1711 int failing_line = LargeFunction(false); 1712 char expected_warning[128]; 1713 sprintf(expected_warning, "LargeFunction.*asan_test.*:%d", failing_line); 1714 EXPECT_DEATH(LargeFunction(true), expected_warning); 1715} 1716 1717// Check that we unwind and symbolize correctly. 1718TEST(AddressSanitizer, DISABLED_MallocFreeUnwindAndSymbolizeTest) { 1719 int *a = (int*)malloc_aaa(sizeof(int)); 1720 *a = 1; 1721 free_aaa(a); 1722 EXPECT_DEATH(*a = 1, "free_ccc.*free_bbb.*free_aaa.*" 1723 "malloc_fff.*malloc_eee.*malloc_ddd"); 1724} 1725 1726static void TryToSetThreadName(const char *name) { 1727#ifdef __linux__ 1728 prctl(PR_SET_NAME, (unsigned long)name, 0, 0, 0); 1729#endif 1730} 1731 1732void *ThreadedTestAlloc(void *a) { 1733 TryToSetThreadName("AllocThr"); 1734 int **p = (int**)a; 1735 *p = new int; 1736 return 0; 1737} 1738 1739void *ThreadedTestFree(void *a) { 1740 TryToSetThreadName("FreeThr"); 1741 int **p = (int**)a; 1742 delete *p; 1743 return 0; 1744} 1745 1746void *ThreadedTestUse(void *a) { 1747 TryToSetThreadName("UseThr"); 1748 int **p = (int**)a; 1749 **p = 1; 1750 return 0; 1751} 1752 1753void ThreadedTestSpawn() { 1754 pthread_t t; 1755 int *x; 1756 PTHREAD_CREATE(&t, 0, ThreadedTestAlloc, &x); 1757 PTHREAD_JOIN(t, 0); 1758 PTHREAD_CREATE(&t, 0, ThreadedTestFree, &x); 1759 PTHREAD_JOIN(t, 0); 1760 PTHREAD_CREATE(&t, 0, ThreadedTestUse, &x); 1761 PTHREAD_JOIN(t, 0); 1762} 1763 1764TEST(AddressSanitizer, ThreadedTest) { 1765 EXPECT_DEATH(ThreadedTestSpawn(), 1766 ASAN_PCRE_DOTALL 1767 "Thread T.*created" 1768 ".*Thread T.*created" 1769 ".*Thread T.*created"); 1770} 1771 1772#ifdef __linux__ 1773TEST(AddressSanitizer, ThreadNamesTest) { 1774 // ThreadedTestSpawn(); 1775 EXPECT_DEATH(ThreadedTestSpawn(), 1776 ASAN_PCRE_DOTALL 1777 "WRITE .*thread T. .UseThr." 1778 ".*freed by thread T. .FreeThr. here:" 1779 ".*previously allocated by thread T. .AllocThr. here:" 1780 ".*Thread T. .UseThr. created by T. here:" 1781 ".*Thread T. .FreeThr. created by T. here:" 1782 ".*Thread T. .AllocThr. created by T. here:" 1783 ""); 1784} 1785#endif 1786 1787#if ASAN_NEEDS_SEGV 1788TEST(AddressSanitizer, ShadowGapTest) { 1789#if SANITIZER_WORDSIZE == 32 1790 char *addr = (char*)0x22000000; 1791#else 1792 char *addr = (char*)0x0000100000080000; 1793#endif 1794 EXPECT_DEATH(*addr = 1, "AddressSanitizer: SEGV on unknown"); 1795} 1796#endif // ASAN_NEEDS_SEGV 1797 1798extern "C" { 1799NOINLINE static void UseThenFreeThenUse() { 1800 char *x = Ident((char*)malloc(8)); 1801 *x = 1; 1802 free_aaa(x); 1803 *x = 2; 1804} 1805} 1806 1807TEST(AddressSanitizer, UseThenFreeThenUseTest) { 1808 EXPECT_DEATH(UseThenFreeThenUse(), "freed by thread"); 1809} 1810 1811TEST(AddressSanitizer, StrDupTest) { 1812 free(strdup(Ident("123"))); 1813} 1814 1815// Currently we create and poison redzone at right of global variables. 1816char glob5[5]; 1817static char static110[110]; 1818const char ConstGlob[7] = {1, 2, 3, 4, 5, 6, 7}; 1819static const char StaticConstGlob[3] = {9, 8, 7}; 1820extern int GlobalsTest(int x); 1821 1822TEST(AddressSanitizer, GlobalTest) { 1823 static char func_static15[15]; 1824 1825 static char fs1[10]; 1826 static char fs2[10]; 1827 static char fs3[10]; 1828 1829 glob5[Ident(0)] = 0; 1830 glob5[Ident(1)] = 0; 1831 glob5[Ident(2)] = 0; 1832 glob5[Ident(3)] = 0; 1833 glob5[Ident(4)] = 0; 1834 1835 EXPECT_DEATH(glob5[Ident(5)] = 0, 1836 "0 bytes to the right of global variable.*glob5.* size 5"); 1837 EXPECT_DEATH(glob5[Ident(5+6)] = 0, 1838 "6 bytes to the right of global variable.*glob5.* size 5"); 1839 Ident(static110); // avoid optimizations 1840 static110[Ident(0)] = 0; 1841 static110[Ident(109)] = 0; 1842 EXPECT_DEATH(static110[Ident(110)] = 0, 1843 "0 bytes to the right of global variable"); 1844 EXPECT_DEATH(static110[Ident(110+7)] = 0, 1845 "7 bytes to the right of global variable"); 1846 1847 Ident(func_static15); // avoid optimizations 1848 func_static15[Ident(0)] = 0; 1849 EXPECT_DEATH(func_static15[Ident(15)] = 0, 1850 "0 bytes to the right of global variable"); 1851 EXPECT_DEATH(func_static15[Ident(15 + 9)] = 0, 1852 "9 bytes to the right of global variable"); 1853 1854 Ident(fs1); 1855 Ident(fs2); 1856 Ident(fs3); 1857 1858 // We don't create left redzones, so this is not 100% guaranteed to fail. 1859 // But most likely will. 1860 EXPECT_DEATH(fs2[Ident(-1)] = 0, "is located.*of global variable"); 1861 1862 EXPECT_DEATH(Ident(Ident(ConstGlob)[8]), 1863 "is located 1 bytes to the right of .*ConstGlob"); 1864 EXPECT_DEATH(Ident(Ident(StaticConstGlob)[5]), 1865 "is located 2 bytes to the right of .*StaticConstGlob"); 1866 1867 // call stuff from another file. 1868 GlobalsTest(0); 1869} 1870 1871TEST(AddressSanitizer, GlobalStringConstTest) { 1872 static const char *zoo = "FOOBAR123"; 1873 const char *p = Ident(zoo); 1874 EXPECT_DEATH(Ident(p[15]), "is ascii string 'FOOBAR123'"); 1875} 1876 1877TEST(AddressSanitizer, FileNameInGlobalReportTest) { 1878 static char zoo[10]; 1879 const char *p = Ident(zoo); 1880 // The file name should be present in the report. 1881 EXPECT_DEATH(Ident(p[15]), "zoo.*asan_test."); 1882} 1883 1884int *ReturnsPointerToALocalObject() { 1885 int a = 0; 1886 return Ident(&a); 1887} 1888 1889#if ASAN_UAR == 1 1890TEST(AddressSanitizer, LocalReferenceReturnTest) { 1891 int *(*f)() = Ident(ReturnsPointerToALocalObject); 1892 int *p = f(); 1893 // Call 'f' a few more times, 'p' should still be poisoned. 1894 for (int i = 0; i < 32; i++) 1895 f(); 1896 EXPECT_DEATH(*p = 1, "AddressSanitizer: stack-use-after-return"); 1897 EXPECT_DEATH(*p = 1, "is located.*in frame .*ReturnsPointerToALocal"); 1898} 1899#endif 1900 1901template <int kSize> 1902NOINLINE static void FuncWithStack() { 1903 char x[kSize]; 1904 Ident(x)[0] = 0; 1905 Ident(x)[kSize-1] = 0; 1906} 1907 1908static void LotsOfStackReuse() { 1909 int LargeStack[10000]; 1910 Ident(LargeStack)[0] = 0; 1911 for (int i = 0; i < 10000; i++) { 1912 FuncWithStack<128 * 1>(); 1913 FuncWithStack<128 * 2>(); 1914 FuncWithStack<128 * 4>(); 1915 FuncWithStack<128 * 8>(); 1916 FuncWithStack<128 * 16>(); 1917 FuncWithStack<128 * 32>(); 1918 FuncWithStack<128 * 64>(); 1919 FuncWithStack<128 * 128>(); 1920 FuncWithStack<128 * 256>(); 1921 FuncWithStack<128 * 512>(); 1922 Ident(LargeStack)[0] = 0; 1923 } 1924} 1925 1926TEST(AddressSanitizer, StressStackReuseTest) { 1927 LotsOfStackReuse(); 1928} 1929 1930TEST(AddressSanitizer, ThreadedStressStackReuseTest) { 1931 const int kNumThreads = 20; 1932 pthread_t t[kNumThreads]; 1933 for (int i = 0; i < kNumThreads; i++) { 1934 PTHREAD_CREATE(&t[i], 0, (void* (*)(void *x))LotsOfStackReuse, 0); 1935 } 1936 for (int i = 0; i < kNumThreads; i++) { 1937 PTHREAD_JOIN(t[i], 0); 1938 } 1939} 1940 1941static void *PthreadExit(void *a) { 1942 pthread_exit(0); 1943 return 0; 1944} 1945 1946TEST(AddressSanitizer, PthreadExitTest) { 1947 pthread_t t; 1948 for (int i = 0; i < 1000; i++) { 1949 PTHREAD_CREATE(&t, 0, PthreadExit, 0); 1950 PTHREAD_JOIN(t, 0); 1951 } 1952} 1953 1954#ifdef __EXCEPTIONS 1955NOINLINE static void StackReuseAndException() { 1956 int large_stack[1000]; 1957 Ident(large_stack); 1958 ASAN_THROW(1); 1959} 1960 1961// TODO(kcc): support exceptions with use-after-return. 1962TEST(AddressSanitizer, DISABLED_StressStackReuseAndExceptionsTest) { 1963 for (int i = 0; i < 10000; i++) { 1964 try { 1965 StackReuseAndException(); 1966 } catch(...) { 1967 } 1968 } 1969} 1970#endif 1971 1972TEST(AddressSanitizer, MlockTest) { 1973 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 1974 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 1975 EXPECT_EQ(0, munlockall()); 1976 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 1977} 1978 1979struct LargeStruct { 1980 int foo[100]; 1981}; 1982 1983// Test for bug http://llvm.org/bugs/show_bug.cgi?id=11763. 1984// Struct copy should not cause asan warning even if lhs == rhs. 1985TEST(AddressSanitizer, LargeStructCopyTest) { 1986 LargeStruct a; 1987 *Ident(&a) = *Ident(&a); 1988} 1989 1990ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS 1991static void NoAddressSafety() { 1992 char *foo = new char[10]; 1993 Ident(foo)[10] = 0; 1994 delete [] foo; 1995} 1996 1997TEST(AddressSanitizer, AttributeNoAddressSafetyTest) { 1998 Ident(NoAddressSafety)(); 1999} 2000 2001static string MismatchStr(const string &str) { 2002 return string("AddressSanitizer: alloc-dealloc-mismatch \\(") + str; 2003} 2004 2005// This test is disabled until we enable alloc_dealloc_mismatch by default. 2006// The feature is also tested by lit tests. 2007TEST(AddressSanitizer, DISABLED_AllocDeallocMismatch) { 2008 EXPECT_DEATH(free(Ident(new int)), 2009 MismatchStr("operator new vs free")); 2010 EXPECT_DEATH(free(Ident(new int[2])), 2011 MismatchStr("operator new \\[\\] vs free")); 2012 EXPECT_DEATH(delete (Ident(new int[2])), 2013 MismatchStr("operator new \\[\\] vs operator delete")); 2014 EXPECT_DEATH(delete (Ident((int*)malloc(2 * sizeof(int)))), 2015 MismatchStr("malloc vs operator delete")); 2016 EXPECT_DEATH(delete [] (Ident(new int)), 2017 MismatchStr("operator new vs operator delete \\[\\]")); 2018 EXPECT_DEATH(delete [] (Ident((int*)malloc(2 * sizeof(int)))), 2019 MismatchStr("malloc vs operator delete \\[\\]")); 2020} 2021 2022// ------------------ demo tests; run each one-by-one ------------- 2023// e.g. --gtest_filter=*DemoOOBLeftHigh --gtest_also_run_disabled_tests 2024TEST(AddressSanitizer, DISABLED_DemoThreadedTest) { 2025 ThreadedTestSpawn(); 2026} 2027 2028void *SimpleBugOnSTack(void *x = 0) { 2029 char a[20]; 2030 Ident(a)[20] = 0; 2031 return 0; 2032} 2033 2034TEST(AddressSanitizer, DISABLED_DemoStackTest) { 2035 SimpleBugOnSTack(); 2036} 2037 2038TEST(AddressSanitizer, DISABLED_DemoThreadStackTest) { 2039 pthread_t t; 2040 PTHREAD_CREATE(&t, 0, SimpleBugOnSTack, 0); 2041 PTHREAD_JOIN(t, 0); 2042} 2043 2044TEST(AddressSanitizer, DISABLED_DemoUAFLowIn) { 2045 uaf_test<U1>(10, 0); 2046} 2047TEST(AddressSanitizer, DISABLED_DemoUAFLowLeft) { 2048 uaf_test<U1>(10, -2); 2049} 2050TEST(AddressSanitizer, DISABLED_DemoUAFLowRight) { 2051 uaf_test<U1>(10, 10); 2052} 2053 2054TEST(AddressSanitizer, DISABLED_DemoUAFHigh) { 2055 uaf_test<U1>(kLargeMalloc, 0); 2056} 2057 2058TEST(AddressSanitizer, DISABLED_DemoOOBLeftLow) { 2059 oob_test<U1>(10, -1); 2060} 2061 2062TEST(AddressSanitizer, DISABLED_DemoOOBLeftHigh) { 2063 oob_test<U1>(kLargeMalloc, -1); 2064} 2065 2066TEST(AddressSanitizer, DISABLED_DemoOOBRightLow) { 2067 oob_test<U1>(10, 10); 2068} 2069 2070TEST(AddressSanitizer, DISABLED_DemoOOBRightHigh) { 2071 oob_test<U1>(kLargeMalloc, kLargeMalloc); 2072} 2073 2074TEST(AddressSanitizer, DISABLED_DemoOOM) { 2075 size_t size = SANITIZER_WORDSIZE == 64 ? (size_t)(1ULL << 40) : (0xf0000000); 2076 printf("%p\n", malloc(size)); 2077} 2078 2079TEST(AddressSanitizer, DISABLED_DemoDoubleFreeTest) { 2080 DoubleFree(); 2081} 2082 2083TEST(AddressSanitizer, DISABLED_DemoNullDerefTest) { 2084 int *a = 0; 2085 Ident(a)[10] = 0; 2086} 2087 2088TEST(AddressSanitizer, DISABLED_DemoFunctionStaticTest) { 2089 static char a[100]; 2090 static char b[100]; 2091 static char c[100]; 2092 Ident(a); 2093 Ident(b); 2094 Ident(c); 2095 Ident(a)[5] = 0; 2096 Ident(b)[105] = 0; 2097 Ident(a)[5] = 0; 2098} 2099 2100TEST(AddressSanitizer, DISABLED_DemoTooMuchMemoryTest) { 2101 const size_t kAllocSize = (1 << 28) - 1024; 2102 size_t total_size = 0; 2103 while (true) { 2104 char *x = (char*)malloc(kAllocSize); 2105 memset(x, 0, kAllocSize); 2106 total_size += kAllocSize; 2107 fprintf(stderr, "total: %ldM %p\n", (long)total_size >> 20, x); 2108 } 2109} 2110 2111// http://code.google.com/p/address-sanitizer/issues/detail?id=66 2112TEST(AddressSanitizer, BufferOverflowAfterManyFrees) { 2113 for (int i = 0; i < 1000000; i++) { 2114 delete [] (Ident(new char [8644])); 2115 } 2116 char *x = new char[8192]; 2117 EXPECT_DEATH(x[Ident(8192)] = 0, "AddressSanitizer: heap-buffer-overflow"); 2118 delete [] Ident(x); 2119} 2120 2121#ifdef __APPLE__ 2122#include "asan_mac_test.h" 2123TEST(AddressSanitizerMac, CFAllocatorDefaultDoubleFree) { 2124 EXPECT_DEATH( 2125 CFAllocatorDefaultDoubleFree(NULL), 2126 "attempting double-free"); 2127} 2128 2129void CFAllocator_DoubleFreeOnPthread() { 2130 pthread_t child; 2131 PTHREAD_CREATE(&child, NULL, CFAllocatorDefaultDoubleFree, NULL); 2132 PTHREAD_JOIN(child, NULL); // Shouldn't be reached. 2133} 2134 2135TEST(AddressSanitizerMac, CFAllocatorDefaultDoubleFree_ChildPhread) { 2136 EXPECT_DEATH(CFAllocator_DoubleFreeOnPthread(), "attempting double-free"); 2137} 2138 2139namespace { 2140 2141void *GLOB; 2142 2143void *CFAllocatorAllocateToGlob(void *unused) { 2144 GLOB = CFAllocatorAllocate(NULL, 100, /*hint*/0); 2145 return NULL; 2146} 2147 2148void *CFAllocatorDeallocateFromGlob(void *unused) { 2149 char *p = (char*)GLOB; 2150 p[100] = 'A'; // ASan should report an error here. 2151 CFAllocatorDeallocate(NULL, GLOB); 2152 return NULL; 2153} 2154 2155void CFAllocator_PassMemoryToAnotherThread() { 2156 pthread_t th1, th2; 2157 PTHREAD_CREATE(&th1, NULL, CFAllocatorAllocateToGlob, NULL); 2158 PTHREAD_JOIN(th1, NULL); 2159 PTHREAD_CREATE(&th2, NULL, CFAllocatorDeallocateFromGlob, NULL); 2160 PTHREAD_JOIN(th2, NULL); 2161} 2162 2163TEST(AddressSanitizerMac, CFAllocator_PassMemoryToAnotherThread) { 2164 EXPECT_DEATH(CFAllocator_PassMemoryToAnotherThread(), 2165 "heap-buffer-overflow"); 2166} 2167 2168} // namespace 2169 2170// TODO(glider): figure out whether we still need these tests. Is it correct 2171// to intercept the non-default CFAllocators? 2172TEST(AddressSanitizerMac, DISABLED_CFAllocatorSystemDefaultDoubleFree) { 2173 EXPECT_DEATH( 2174 CFAllocatorSystemDefaultDoubleFree(), 2175 "attempting double-free"); 2176} 2177 2178// We're intercepting malloc, so kCFAllocatorMalloc is routed to ASan. 2179TEST(AddressSanitizerMac, CFAllocatorMallocDoubleFree) { 2180 EXPECT_DEATH(CFAllocatorMallocDoubleFree(), "attempting double-free"); 2181} 2182 2183TEST(AddressSanitizerMac, DISABLED_CFAllocatorMallocZoneDoubleFree) { 2184 EXPECT_DEATH(CFAllocatorMallocZoneDoubleFree(), "attempting double-free"); 2185} 2186 2187// For libdispatch tests below we check that ASan got to the shadow byte 2188// legend, i.e. managed to print the thread stacks (this almost certainly 2189// means that the libdispatch task creation has been intercepted correctly). 2190TEST(AddressSanitizerMac, GCDDispatchAsync) { 2191 // Make sure the whole ASan report is printed, i.e. that we don't die 2192 // on a CHECK. 2193 EXPECT_DEATH(TestGCDDispatchAsync(), "Shadow byte legend"); 2194} 2195 2196TEST(AddressSanitizerMac, GCDDispatchSync) { 2197 // Make sure the whole ASan report is printed, i.e. that we don't die 2198 // on a CHECK. 2199 EXPECT_DEATH(TestGCDDispatchSync(), "Shadow byte legend"); 2200} 2201 2202 2203TEST(AddressSanitizerMac, GCDReuseWqthreadsAsync) { 2204 // Make sure the whole ASan report is printed, i.e. that we don't die 2205 // on a CHECK. 2206 EXPECT_DEATH(TestGCDReuseWqthreadsAsync(), "Shadow byte legend"); 2207} 2208 2209TEST(AddressSanitizerMac, GCDReuseWqthreadsSync) { 2210 // Make sure the whole ASan report is printed, i.e. that we don't die 2211 // on a CHECK. 2212 EXPECT_DEATH(TestGCDReuseWqthreadsSync(), "Shadow byte legend"); 2213} 2214 2215TEST(AddressSanitizerMac, GCDDispatchAfter) { 2216 // Make sure the whole ASan report is printed, i.e. that we don't die 2217 // on a CHECK. 2218 EXPECT_DEATH(TestGCDDispatchAfter(), "Shadow byte legend"); 2219} 2220 2221TEST(AddressSanitizerMac, GCDSourceEvent) { 2222 // Make sure the whole ASan report is printed, i.e. that we don't die 2223 // on a CHECK. 2224 EXPECT_DEATH(TestGCDSourceEvent(), "Shadow byte legend"); 2225} 2226 2227TEST(AddressSanitizerMac, GCDSourceCancel) { 2228 // Make sure the whole ASan report is printed, i.e. that we don't die 2229 // on a CHECK. 2230 EXPECT_DEATH(TestGCDSourceCancel(), "Shadow byte legend"); 2231} 2232 2233TEST(AddressSanitizerMac, GCDGroupAsync) { 2234 // Make sure the whole ASan report is printed, i.e. that we don't die 2235 // on a CHECK. 2236 EXPECT_DEATH(TestGCDGroupAsync(), "Shadow byte legend"); 2237} 2238 2239void *MallocIntrospectionLockWorker(void *_) { 2240 const int kNumPointers = 100; 2241 int i; 2242 void *pointers[kNumPointers]; 2243 for (i = 0; i < kNumPointers; i++) { 2244 pointers[i] = malloc(i + 1); 2245 } 2246 for (i = 0; i < kNumPointers; i++) { 2247 free(pointers[i]); 2248 } 2249 2250 return NULL; 2251} 2252 2253void *MallocIntrospectionLockForker(void *_) { 2254 pid_t result = fork(); 2255 if (result == -1) { 2256 perror("fork"); 2257 } 2258 assert(result != -1); 2259 if (result == 0) { 2260 // Call malloc in the child process to make sure we won't deadlock. 2261 void *ptr = malloc(42); 2262 free(ptr); 2263 exit(0); 2264 } else { 2265 // Return in the parent process. 2266 return NULL; 2267 } 2268} 2269 2270TEST(AddressSanitizerMac, MallocIntrospectionLock) { 2271 // Incorrect implementation of force_lock and force_unlock in our malloc zone 2272 // will cause forked processes to deadlock. 2273 // TODO(glider): need to detect that none of the child processes deadlocked. 2274 const int kNumWorkers = 5, kNumIterations = 100; 2275 int i, iter; 2276 for (iter = 0; iter < kNumIterations; iter++) { 2277 pthread_t workers[kNumWorkers], forker; 2278 for (i = 0; i < kNumWorkers; i++) { 2279 PTHREAD_CREATE(&workers[i], 0, MallocIntrospectionLockWorker, 0); 2280 } 2281 PTHREAD_CREATE(&forker, 0, MallocIntrospectionLockForker, 0); 2282 for (i = 0; i < kNumWorkers; i++) { 2283 PTHREAD_JOIN(workers[i], 0); 2284 } 2285 PTHREAD_JOIN(forker, 0); 2286 } 2287} 2288 2289void *TSDAllocWorker(void *test_key) { 2290 if (test_key) { 2291 void *mem = malloc(10); 2292 pthread_setspecific(*(pthread_key_t*)test_key, mem); 2293 } 2294 return NULL; 2295} 2296 2297TEST(AddressSanitizerMac, DISABLED_TSDWorkqueueTest) { 2298 pthread_t th; 2299 pthread_key_t test_key; 2300 pthread_key_create(&test_key, CallFreeOnWorkqueue); 2301 PTHREAD_CREATE(&th, NULL, TSDAllocWorker, &test_key); 2302 PTHREAD_JOIN(th, NULL); 2303 pthread_key_delete(test_key); 2304} 2305 2306// Test that CFStringCreateCopy does not copy constant strings. 2307TEST(AddressSanitizerMac, CFStringCreateCopy) { 2308 CFStringRef str = CFSTR("Hello world!\n"); 2309 CFStringRef str2 = CFStringCreateCopy(0, str); 2310 EXPECT_EQ(str, str2); 2311} 2312 2313TEST(AddressSanitizerMac, NSObjectOOB) { 2314 // Make sure that our allocators are used for NSObjects. 2315 EXPECT_DEATH(TestOOBNSObjects(), "heap-buffer-overflow"); 2316} 2317 2318// Make sure that correct pointer is passed to free() when deallocating a 2319// NSURL object. 2320// See http://code.google.com/p/address-sanitizer/issues/detail?id=70. 2321TEST(AddressSanitizerMac, NSURLDeallocation) { 2322 TestNSURLDeallocation(); 2323} 2324 2325// See http://code.google.com/p/address-sanitizer/issues/detail?id=109. 2326TEST(AddressSanitizerMac, Mstats) { 2327 malloc_statistics_t stats1, stats2; 2328 malloc_zone_statistics(/*all zones*/NULL, &stats1); 2329 const size_t kMallocSize = 100000; 2330 void *alloc = Ident(malloc(kMallocSize)); 2331 malloc_zone_statistics(/*all zones*/NULL, &stats2); 2332 EXPECT_GT(stats2.blocks_in_use, stats1.blocks_in_use); 2333 EXPECT_GE(stats2.size_in_use - stats1.size_in_use, kMallocSize); 2334 free(alloc); 2335 // Even the default OSX allocator may not change the stats after free(). 2336} 2337#endif // __APPLE__ 2338 2339// Test that instrumentation of stack allocations takes into account 2340// AllocSize of a type, and not its StoreSize (16 vs 10 bytes for long double). 2341// See http://llvm.org/bugs/show_bug.cgi?id=12047 for more details. 2342TEST(AddressSanitizer, LongDoubleNegativeTest) { 2343 long double a, b; 2344 static long double c; 2345 memcpy(Ident(&a), Ident(&b), sizeof(long double)); 2346 memcpy(Ident(&c), Ident(&b), sizeof(long double)); 2347} 2348