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 "asan_test_utils.h" 14 15 NOINLINE void *malloc_fff(size_t size) { 16 void *res = malloc/**/(size); break_optimization(0); return res;} 17 NOINLINE void *malloc_eee(size_t size) { 18 void *res = malloc_fff(size); break_optimization(0); return res;} 19 NOINLINE void *malloc_ddd(size_t size) { 20 void *res = malloc_eee(size); break_optimization(0); return res;} 21 NOINLINE void *malloc_ccc(size_t size) { 22 void *res = malloc_ddd(size); break_optimization(0); return res;} 23 NOINLINE void *malloc_bbb(size_t size) { 24 void *res = malloc_ccc(size); break_optimization(0); return res;} 25 NOINLINE void *malloc_aaa(size_t size) { 26 void *res = malloc_bbb(size); break_optimization(0); return res;} 27 28 NOINLINE void free_ccc(void *p) { free(p); break_optimization(0);} 29 NOINLINE void free_bbb(void *p) { free_ccc(p); break_optimization(0);} 30 NOINLINE void free_aaa(void *p) { free_bbb(p); break_optimization(0);} 31 32 template<typename T> 33 NOINLINE void uaf_test(int size, int off) { 34 void *p = malloc_aaa(size); 35 free_aaa(p); 36 for (int i = 1; i < 100; i++) 37 free_aaa(malloc_aaa(i)); 38 fprintf(stderr, "writing %ld byte(s) at %p with offset %d\n", 39 (long)sizeof(T), p, off); 40 asan_write((T *)((char *)p + off)); 41 } 42 43 TEST(AddressSanitizer, HasFeatureAddressSanitizerTest) { 44 #if defined(__has_feature) && __has_feature(address_sanitizer) 45 bool asan = 1; 46 #elif defined(__SANITIZE_ADDRESS__) 47 bool asan = 1; 48 #else 49 bool asan = 0; 50 #endif 51 EXPECT_EQ(true, asan); 52 } 53 54 TEST(AddressSanitizer, SimpleDeathTest) { 55 EXPECT_DEATH(exit(1), ""); 56 } 57 58 TEST(AddressSanitizer, VariousMallocsTest) { 59 int *a = (int*)malloc(100 * sizeof(int)); 60 a[50] = 0; 61 free(a); 62 63 int *r = (int*)malloc(10); 64 r = (int*)realloc(r, 2000 * sizeof(int)); 65 r[1000] = 0; 66 free(r); 67 68 int *b = new int[100]; 69 b[50] = 0; 70 delete [] b; 71 72 int *c = new int; 73 *c = 0; 74 delete c; 75 76 #if SANITIZER_TEST_HAS_POSIX_MEMALIGN 77 int *pm; 78 int pm_res = posix_memalign((void**)&pm, kPageSize, kPageSize); 79 EXPECT_EQ(0, pm_res); 80 free(pm); 81 #endif // SANITIZER_TEST_HAS_POSIX_MEMALIGN 82 83 #if SANITIZER_TEST_HAS_MEMALIGN 84 int *ma = (int*)memalign(kPageSize, kPageSize); 85 EXPECT_EQ(0U, (uintptr_t)ma % kPageSize); 86 ma[123] = 0; 87 free(ma); 88 #endif // SANITIZER_TEST_HAS_MEMALIGN 89 } 90 91 TEST(AddressSanitizer, CallocTest) { 92 int *a = (int*)calloc(100, sizeof(int)); 93 EXPECT_EQ(0, a[10]); 94 free(a); 95 } 96 97 TEST(AddressSanitizer, CallocReturnsZeroMem) { 98 size_t sizes[] = {16, 1000, 10000, 100000, 2100000}; 99 for (size_t s = 0; s < sizeof(sizes)/sizeof(sizes[0]); s++) { 100 size_t size = sizes[s]; 101 for (size_t iter = 0; iter < 5; iter++) { 102 char *x = Ident((char*)calloc(1, size)); 103 EXPECT_EQ(x[0], 0); 104 EXPECT_EQ(x[size - 1], 0); 105 EXPECT_EQ(x[size / 2], 0); 106 EXPECT_EQ(x[size / 3], 0); 107 EXPECT_EQ(x[size / 4], 0); 108 memset(x, 0x42, size); 109 free(Ident(x)); 110 #if !defined(_WIN32) 111 // FIXME: OOM on Windows. We should just make this a lit test 112 // with quarantine size set to 1. 113 free(Ident(malloc(Ident(1 << 27)))); // Try to drain the quarantine. 114 #endif 115 } 116 } 117 } 118 119 // No valloc on Windows or Android. 120 #if !defined(_WIN32) && !defined(__ANDROID__) 121 TEST(AddressSanitizer, VallocTest) { 122 void *a = valloc(100); 123 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 124 free(a); 125 } 126 #endif 127 128 #if SANITIZER_TEST_HAS_PVALLOC 129 TEST(AddressSanitizer, PvallocTest) { 130 char *a = (char*)pvalloc(kPageSize + 100); 131 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 132 a[kPageSize + 101] = 1; // we should not report an error here. 133 free(a); 134 135 a = (char*)pvalloc(0); // pvalloc(0) should allocate at least one page. 136 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 137 a[101] = 1; // we should not report an error here. 138 free(a); 139 } 140 #endif // SANITIZER_TEST_HAS_PVALLOC 141 142 #if !defined(_WIN32) 143 // FIXME: Use an equivalent of pthread_setspecific on Windows. 144 void *TSDWorker(void *test_key) { 145 if (test_key) { 146 pthread_setspecific(*(pthread_key_t*)test_key, (void*)0xfeedface); 147 } 148 return NULL; 149 } 150 151 void TSDDestructor(void *tsd) { 152 // Spawning a thread will check that the current thread id is not -1. 153 pthread_t th; 154 PTHREAD_CREATE(&th, NULL, TSDWorker, NULL); 155 PTHREAD_JOIN(th, NULL); 156 } 157 158 // This tests triggers the thread-specific data destruction fiasco which occurs 159 // if we don't manage the TSD destructors ourselves. We create a new pthread 160 // key with a non-NULL destructor which is likely to be put after the destructor 161 // of AsanThread in the list of destructors. 162 // In this case the TSD for AsanThread will be destroyed before TSDDestructor 163 // is called for the child thread, and a CHECK will fail when we call 164 // pthread_create() to spawn the grandchild. 165 TEST(AddressSanitizer, DISABLED_TSDTest) { 166 pthread_t th; 167 pthread_key_t test_key; 168 pthread_key_create(&test_key, TSDDestructor); 169 PTHREAD_CREATE(&th, NULL, TSDWorker, &test_key); 170 PTHREAD_JOIN(th, NULL); 171 pthread_key_delete(test_key); 172 } 173 #endif 174 175 TEST(AddressSanitizer, UAF_char) { 176 const char *uaf_string = "AddressSanitizer:.*heap-use-after-free"; 177 EXPECT_DEATH(uaf_test<U1>(1, 0), uaf_string); 178 EXPECT_DEATH(uaf_test<U1>(10, 0), uaf_string); 179 EXPECT_DEATH(uaf_test<U1>(10, 10), uaf_string); 180 EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, 0), uaf_string); 181 EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, kLargeMalloc / 2), uaf_string); 182 } 183 184 TEST(AddressSanitizer, UAF_long_double) { 185 if (sizeof(long double) == sizeof(double)) return; 186 long double *p = Ident(new long double[10]); 187 EXPECT_DEATH(Ident(p)[12] = 0, "WRITE of size 1[026]"); 188 EXPECT_DEATH(Ident(p)[0] = Ident(p)[12], "READ of size 1[026]"); 189 delete [] Ident(p); 190 } 191 192 #if !defined(_WIN32) 193 struct Packed5 { 194 int x; 195 char c; 196 } __attribute__((packed)); 197 #else 198 # pragma pack(push, 1) 199 struct Packed5 { 200 int x; 201 char c; 202 }; 203 # pragma pack(pop) 204 #endif 205 206 TEST(AddressSanitizer, UAF_Packed5) { 207 static_assert(sizeof(Packed5) == 5, "Please check the keywords used"); 208 Packed5 *p = Ident(new Packed5[2]); 209 EXPECT_DEATH(p[0] = p[3], "READ of size 5"); 210 EXPECT_DEATH(p[3] = p[0], "WRITE of size 5"); 211 delete [] Ident(p); 212 } 213 214 #if ASAN_HAS_BLACKLIST 215 TEST(AddressSanitizer, IgnoreTest) { 216 int *x = Ident(new int); 217 delete Ident(x); 218 *x = 0; 219 } 220 #endif // ASAN_HAS_BLACKLIST 221 222 struct StructWithBitField { 223 int bf1:1; 224 int bf2:1; 225 int bf3:1; 226 int bf4:29; 227 }; 228 229 TEST(AddressSanitizer, BitFieldPositiveTest) { 230 StructWithBitField *x = new StructWithBitField; 231 delete Ident(x); 232 EXPECT_DEATH(x->bf1 = 0, "use-after-free"); 233 EXPECT_DEATH(x->bf2 = 0, "use-after-free"); 234 EXPECT_DEATH(x->bf3 = 0, "use-after-free"); 235 EXPECT_DEATH(x->bf4 = 0, "use-after-free"); 236 } 237 238 struct StructWithBitFields_8_24 { 239 int a:8; 240 int b:24; 241 }; 242 243 TEST(AddressSanitizer, BitFieldNegativeTest) { 244 StructWithBitFields_8_24 *x = Ident(new StructWithBitFields_8_24); 245 x->a = 0; 246 x->b = 0; 247 delete Ident(x); 248 } 249 250 #if ASAN_NEEDS_SEGV 251 namespace { 252 253 const char kSEGVCrash[] = "AddressSanitizer: SEGV on unknown address"; 254 const char kOverriddenHandler[] = "ASan signal handler has been overridden\n"; 255 256 TEST(AddressSanitizer, WildAddressTest) { 257 char *c = (char*)0x123; 258 EXPECT_DEATH(*c = 0, kSEGVCrash); 259 } 260 261 void my_sigaction_sighandler(int, siginfo_t*, void*) { 262 fprintf(stderr, kOverriddenHandler); 263 exit(1); 264 } 265 266 void my_signal_sighandler(int signum) { 267 fprintf(stderr, kOverriddenHandler); 268 exit(1); 269 } 270 271 TEST(AddressSanitizer, SignalTest) { 272 struct sigaction sigact; 273 memset(&sigact, 0, sizeof(sigact)); 274 sigact.sa_sigaction = my_sigaction_sighandler; 275 sigact.sa_flags = SA_SIGINFO; 276 // ASan should silently ignore sigaction()... 277 EXPECT_EQ(0, sigaction(SIGSEGV, &sigact, 0)); 278 #ifdef __APPLE__ 279 EXPECT_EQ(0, sigaction(SIGBUS, &sigact, 0)); 280 #endif 281 char *c = (char*)0x123; 282 EXPECT_DEATH(*c = 0, kSEGVCrash); 283 // ... and signal(). 284 EXPECT_EQ(0, signal(SIGSEGV, my_signal_sighandler)); 285 EXPECT_DEATH(*c = 0, kSEGVCrash); 286 } 287 } // namespace 288 #endif 289 290 static void TestLargeMalloc(size_t size) { 291 char buff[1024]; 292 sprintf(buff, "is located 1 bytes to the left of %lu-byte", (long)size); 293 EXPECT_DEATH(Ident((char*)malloc(size))[-1] = 0, buff); 294 } 295 296 TEST(AddressSanitizer, LargeMallocTest) { 297 const int max_size = (SANITIZER_WORDSIZE == 32) ? 1 << 26 : 1 << 28; 298 for (int i = 113; i < max_size; i = i * 2 + 13) { 299 TestLargeMalloc(i); 300 } 301 } 302 303 #if !GTEST_USES_SIMPLE_RE 304 TEST(AddressSanitizer, HugeMallocTest) { 305 if (SANITIZER_WORDSIZE != 64 || ASAN_AVOID_EXPENSIVE_TESTS) return; 306 size_t n_megs = 4100; 307 EXPECT_DEATH(Ident((char*)malloc(n_megs << 20))[-1] = 0, 308 "is located 1 bytes to the left|" 309 "AddressSanitizer failed to allocate"); 310 } 311 #endif 312 313 #if SANITIZER_TEST_HAS_MEMALIGN 314 void MemalignRun(size_t align, size_t size, int idx) { 315 char *p = (char *)memalign(align, size); 316 Ident(p)[idx] = 0; 317 free(p); 318 } 319 320 TEST(AddressSanitizer, memalign) { 321 for (int align = 16; align <= (1 << 23); align *= 2) { 322 size_t size = align * 5; 323 EXPECT_DEATH(MemalignRun(align, size, -1), 324 "is located 1 bytes to the left"); 325 EXPECT_DEATH(MemalignRun(align, size, size + 1), 326 "is located 1 bytes to the right"); 327 } 328 } 329 #endif // SANITIZER_TEST_HAS_MEMALIGN 330 331 void *ManyThreadsWorker(void *a) { 332 for (int iter = 0; iter < 100; iter++) { 333 for (size_t size = 100; size < 2000; size *= 2) { 334 free(Ident(malloc(size))); 335 } 336 } 337 return 0; 338 } 339 340 #if !defined(__aarch64__) 341 // FIXME: Infinite loop in AArch64 (PR24389). 342 TEST(AddressSanitizer, ManyThreadsTest) { 343 const size_t kNumThreads = 344 (SANITIZER_WORDSIZE == 32 || ASAN_AVOID_EXPENSIVE_TESTS) ? 30 : 1000; 345 pthread_t t[kNumThreads]; 346 for (size_t i = 0; i < kNumThreads; i++) { 347 PTHREAD_CREATE(&t[i], 0, ManyThreadsWorker, (void*)i); 348 } 349 for (size_t i = 0; i < kNumThreads; i++) { 350 PTHREAD_JOIN(t[i], 0); 351 } 352 } 353 #endif 354 355 TEST(AddressSanitizer, ReallocTest) { 356 const int kMinElem = 5; 357 int *ptr = (int*)malloc(sizeof(int) * kMinElem); 358 ptr[3] = 3; 359 for (int i = 0; i < 10000; i++) { 360 ptr = (int*)realloc(ptr, 361 (my_rand() % 1000 + kMinElem) * sizeof(int)); 362 EXPECT_EQ(3, ptr[3]); 363 } 364 free(ptr); 365 // Realloc pointer returned by malloc(0). 366 int *ptr2 = Ident((int*)malloc(0)); 367 ptr2 = Ident((int*)realloc(ptr2, sizeof(*ptr2))); 368 *ptr2 = 42; 369 EXPECT_EQ(42, *ptr2); 370 free(ptr2); 371 } 372 373 TEST(AddressSanitizer, ReallocFreedPointerTest) { 374 void *ptr = Ident(malloc(42)); 375 ASSERT_TRUE(NULL != ptr); 376 free(ptr); 377 EXPECT_DEATH(ptr = realloc(ptr, 77), "attempting double-free"); 378 } 379 380 TEST(AddressSanitizer, ReallocInvalidPointerTest) { 381 void *ptr = Ident(malloc(42)); 382 EXPECT_DEATH(ptr = realloc((int*)ptr + 1, 77), "attempting free.*not malloc"); 383 free(ptr); 384 } 385 386 TEST(AddressSanitizer, ZeroSizeMallocTest) { 387 // Test that malloc(0) and similar functions don't return NULL. 388 void *ptr = Ident(malloc(0)); 389 EXPECT_TRUE(NULL != ptr); 390 free(ptr); 391 #if SANITIZER_TEST_HAS_POSIX_MEMALIGN 392 int pm_res = posix_memalign(&ptr, 1<<20, 0); 393 EXPECT_EQ(0, pm_res); 394 EXPECT_TRUE(NULL != ptr); 395 free(ptr); 396 #endif // SANITIZER_TEST_HAS_POSIX_MEMALIGN 397 int *int_ptr = new int[0]; 398 int *int_ptr2 = new int[0]; 399 EXPECT_TRUE(NULL != int_ptr); 400 EXPECT_TRUE(NULL != int_ptr2); 401 EXPECT_NE(int_ptr, int_ptr2); 402 delete[] int_ptr; 403 delete[] int_ptr2; 404 } 405 406 #if SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 407 static const char *kMallocUsableSizeErrorMsg = 408 "AddressSanitizer: attempting to call malloc_usable_size()"; 409 410 TEST(AddressSanitizer, MallocUsableSizeTest) { 411 const size_t kArraySize = 100; 412 char *array = Ident((char*)malloc(kArraySize)); 413 int *int_ptr = Ident(new int); 414 EXPECT_EQ(0U, malloc_usable_size(NULL)); 415 EXPECT_EQ(kArraySize, malloc_usable_size(array)); 416 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); 417 EXPECT_DEATH(malloc_usable_size((void*)0x123), kMallocUsableSizeErrorMsg); 418 EXPECT_DEATH(malloc_usable_size(array + kArraySize / 2), 419 kMallocUsableSizeErrorMsg); 420 free(array); 421 EXPECT_DEATH(malloc_usable_size(array), kMallocUsableSizeErrorMsg); 422 delete int_ptr; 423 } 424 #endif // SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 425 426 void WrongFree() { 427 int *x = (int*)malloc(100 * sizeof(int)); 428 // Use the allocated memory, otherwise Clang will optimize it out. 429 Ident(x); 430 free(x + 1); 431 } 432 433 #if !defined(_WIN32) // FIXME: This should be a lit test. 434 TEST(AddressSanitizer, WrongFreeTest) { 435 EXPECT_DEATH(WrongFree(), ASAN_PCRE_DOTALL 436 "ERROR: AddressSanitizer: attempting free.*not malloc" 437 ".*is located 4 bytes inside of 400-byte region" 438 ".*allocated by thread"); 439 } 440 #endif 441 442 void DoubleFree() { 443 int *x = (int*)malloc(100 * sizeof(int)); 444 fprintf(stderr, "DoubleFree: x=%p\n", (void *)x); 445 free(x); 446 free(x); 447 fprintf(stderr, "should have failed in the second free(%p)\n", (void *)x); 448 abort(); 449 } 450 451 #if !defined(_WIN32) // FIXME: This should be a lit test. 452 TEST(AddressSanitizer, DoubleFreeTest) { 453 EXPECT_DEATH(DoubleFree(), ASAN_PCRE_DOTALL 454 "ERROR: AddressSanitizer: attempting double-free" 455 ".*is located 0 bytes inside of 400-byte region" 456 ".*freed by thread T0 here" 457 ".*previously allocated by thread T0 here"); 458 } 459 #endif 460 461 template<int kSize> 462 NOINLINE void SizedStackTest() { 463 char a[kSize]; 464 char *A = Ident((char*)&a); 465 const char *expected_death = "AddressSanitizer: stack-buffer-"; 466 for (size_t i = 0; i < kSize; i++) 467 A[i] = i; 468 EXPECT_DEATH(A[-1] = 0, expected_death); 469 EXPECT_DEATH(A[-5] = 0, expected_death); 470 EXPECT_DEATH(A[kSize] = 0, expected_death); 471 EXPECT_DEATH(A[kSize + 1] = 0, expected_death); 472 EXPECT_DEATH(A[kSize + 5] = 0, expected_death); 473 if (kSize > 16) 474 EXPECT_DEATH(A[kSize + 31] = 0, expected_death); 475 } 476 477 TEST(AddressSanitizer, SimpleStackTest) { 478 SizedStackTest<1>(); 479 SizedStackTest<2>(); 480 SizedStackTest<3>(); 481 SizedStackTest<4>(); 482 SizedStackTest<5>(); 483 SizedStackTest<6>(); 484 SizedStackTest<7>(); 485 SizedStackTest<16>(); 486 SizedStackTest<25>(); 487 SizedStackTest<34>(); 488 SizedStackTest<43>(); 489 SizedStackTest<51>(); 490 SizedStackTest<62>(); 491 SizedStackTest<64>(); 492 SizedStackTest<128>(); 493 } 494 495 #if !defined(_WIN32) 496 // FIXME: It's a bit hard to write multi-line death test expectations 497 // in a portable way. Anyways, this should just be turned into a lit test. 498 TEST(AddressSanitizer, ManyStackObjectsTest) { 499 char XXX[10]; 500 char YYY[20]; 501 char ZZZ[30]; 502 Ident(XXX); 503 Ident(YYY); 504 EXPECT_DEATH(Ident(ZZZ)[-1] = 0, ASAN_PCRE_DOTALL "XXX.*YYY.*ZZZ"); 505 } 506 #endif 507 508 #if 0 // This test requires online symbolizer. 509 // Moved to lit_tests/stack-oob-frames.cc. 510 // Reenable here once we have online symbolizer by default. 511 NOINLINE static void Frame0(int frame, char *a, char *b, char *c) { 512 char d[4] = {0}; 513 char *D = Ident(d); 514 switch (frame) { 515 case 3: a[5]++; break; 516 case 2: b[5]++; break; 517 case 1: c[5]++; break; 518 case 0: D[5]++; break; 519 } 520 } 521 NOINLINE static void Frame1(int frame, char *a, char *b) { 522 char c[4] = {0}; Frame0(frame, a, b, c); 523 break_optimization(0); 524 } 525 NOINLINE static void Frame2(int frame, char *a) { 526 char b[4] = {0}; Frame1(frame, a, b); 527 break_optimization(0); 528 } 529 NOINLINE static void Frame3(int frame) { 530 char a[4] = {0}; Frame2(frame, a); 531 break_optimization(0); 532 } 533 534 TEST(AddressSanitizer, GuiltyStackFrame0Test) { 535 EXPECT_DEATH(Frame3(0), "located .*in frame <.*Frame0"); 536 } 537 TEST(AddressSanitizer, GuiltyStackFrame1Test) { 538 EXPECT_DEATH(Frame3(1), "located .*in frame <.*Frame1"); 539 } 540 TEST(AddressSanitizer, GuiltyStackFrame2Test) { 541 EXPECT_DEATH(Frame3(2), "located .*in frame <.*Frame2"); 542 } 543 TEST(AddressSanitizer, GuiltyStackFrame3Test) { 544 EXPECT_DEATH(Frame3(3), "located .*in frame <.*Frame3"); 545 } 546 #endif 547 548 NOINLINE void LongJmpFunc1(jmp_buf buf) { 549 // create three red zones for these two stack objects. 550 int a; 551 int b; 552 553 int *A = Ident(&a); 554 int *B = Ident(&b); 555 *A = *B; 556 longjmp(buf, 1); 557 } 558 559 NOINLINE void TouchStackFunc() { 560 int a[100]; // long array will intersect with redzones from LongJmpFunc1. 561 int *A = Ident(a); 562 for (int i = 0; i < 100; i++) 563 A[i] = i*i; 564 } 565 566 // Test that we handle longjmp and do not report false positives on stack. 567 TEST(AddressSanitizer, LongJmpTest) { 568 static jmp_buf buf; 569 if (!setjmp(buf)) { 570 LongJmpFunc1(buf); 571 } else { 572 TouchStackFunc(); 573 } 574 } 575 576 #if !defined(_WIN32) // Only basic longjmp is available on Windows. 577 NOINLINE void UnderscopeLongJmpFunc1(jmp_buf buf) { 578 // create three red zones for these two stack objects. 579 int a; 580 int b; 581 582 int *A = Ident(&a); 583 int *B = Ident(&b); 584 *A = *B; 585 _longjmp(buf, 1); 586 } 587 588 NOINLINE void SigLongJmpFunc1(sigjmp_buf buf) { 589 // create three red zones for these two stack objects. 590 int a; 591 int b; 592 593 int *A = Ident(&a); 594 int *B = Ident(&b); 595 *A = *B; 596 siglongjmp(buf, 1); 597 } 598 599 #if !defined(__ANDROID__) && !defined(__arm__) && \ 600 !defined(__aarch64__) && !defined(__mips__) && \ 601 !defined(__mips64) && !defined(__s390__) 602 NOINLINE void BuiltinLongJmpFunc1(jmp_buf buf) { 603 // create three red zones for these two stack objects. 604 int a; 605 int b; 606 607 int *A = Ident(&a); 608 int *B = Ident(&b); 609 *A = *B; 610 __builtin_longjmp((void**)buf, 1); 611 } 612 613 // Does not work on ARM: 614 // https://github.com/google/sanitizers/issues/185 615 TEST(AddressSanitizer, BuiltinLongJmpTest) { 616 static jmp_buf buf; 617 if (!__builtin_setjmp((void**)buf)) { 618 BuiltinLongJmpFunc1(buf); 619 } else { 620 TouchStackFunc(); 621 } 622 } 623 #endif // !defined(__ANDROID__) && !defined(__arm__) && 624 // !defined(__aarch64__) && !defined(__mips__) 625 // !defined(__mips64) && !defined(__s390__) 626 627 TEST(AddressSanitizer, UnderscopeLongJmpTest) { 628 static jmp_buf buf; 629 if (!_setjmp(buf)) { 630 UnderscopeLongJmpFunc1(buf); 631 } else { 632 TouchStackFunc(); 633 } 634 } 635 636 TEST(AddressSanitizer, SigLongJmpTest) { 637 static sigjmp_buf buf; 638 if (!sigsetjmp(buf, 1)) { 639 SigLongJmpFunc1(buf); 640 } else { 641 TouchStackFunc(); 642 } 643 } 644 #endif 645 646 // FIXME: Why does clang-cl define __EXCEPTIONS? 647 #if defined(__EXCEPTIONS) && !defined(_WIN32) 648 NOINLINE void ThrowFunc() { 649 // create three red zones for these two stack objects. 650 int a; 651 int b; 652 653 int *A = Ident(&a); 654 int *B = Ident(&b); 655 *A = *B; 656 ASAN_THROW(1); 657 } 658 659 TEST(AddressSanitizer, CxxExceptionTest) { 660 if (ASAN_UAR) return; 661 // TODO(kcc): this test crashes on 32-bit for some reason... 662 if (SANITIZER_WORDSIZE == 32) return; 663 try { 664 ThrowFunc(); 665 } catch(...) {} 666 TouchStackFunc(); 667 } 668 #endif 669 670 void *ThreadStackReuseFunc1(void *unused) { 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 pthread_exit(0); 679 return 0; 680 } 681 682 void *ThreadStackReuseFunc2(void *unused) { 683 TouchStackFunc(); 684 return 0; 685 } 686 687 TEST(AddressSanitizer, ThreadStackReuseTest) { 688 pthread_t t; 689 PTHREAD_CREATE(&t, 0, ThreadStackReuseFunc1, 0); 690 PTHREAD_JOIN(t, 0); 691 PTHREAD_CREATE(&t, 0, ThreadStackReuseFunc2, 0); 692 PTHREAD_JOIN(t, 0); 693 } 694 695 #if defined(__i686__) || defined(__x86_64__) 696 #include <emmintrin.h> 697 TEST(AddressSanitizer, Store128Test) { 698 char *a = Ident((char*)malloc(Ident(12))); 699 char *p = a; 700 if (((uintptr_t)a % 16) != 0) 701 p = a + 8; 702 assert(((uintptr_t)p % 16) == 0); 703 __m128i value_wide = _mm_set1_epi16(0x1234); 704 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 705 "AddressSanitizer: heap-buffer-overflow"); 706 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 707 "WRITE of size 16"); 708 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 709 "located 0 bytes to the right of 12-byte"); 710 free(a); 711 } 712 #endif 713 714 // FIXME: All tests that use this function should be turned into lit tests. 715 string RightOOBErrorMessage(int oob_distance, bool is_write) { 716 assert(oob_distance >= 0); 717 char expected_str[100]; 718 sprintf(expected_str, ASAN_PCRE_DOTALL 719 #if !GTEST_USES_SIMPLE_RE 720 "buffer-overflow.*%s.*" 721 #endif 722 "located %d bytes to the right", 723 #if !GTEST_USES_SIMPLE_RE 724 is_write ? "WRITE" : "READ", 725 #endif 726 oob_distance); 727 return string(expected_str); 728 } 729 730 string RightOOBWriteMessage(int oob_distance) { 731 return RightOOBErrorMessage(oob_distance, /*is_write*/true); 732 } 733 734 string RightOOBReadMessage(int oob_distance) { 735 return RightOOBErrorMessage(oob_distance, /*is_write*/false); 736 } 737 738 // FIXME: All tests that use this function should be turned into lit tests. 739 string LeftOOBErrorMessage(int oob_distance, bool is_write) { 740 assert(oob_distance > 0); 741 char expected_str[100]; 742 sprintf(expected_str, 743 #if !GTEST_USES_SIMPLE_RE 744 ASAN_PCRE_DOTALL "%s.*" 745 #endif 746 "located %d bytes to the left", 747 #if !GTEST_USES_SIMPLE_RE 748 is_write ? "WRITE" : "READ", 749 #endif 750 oob_distance); 751 return string(expected_str); 752 } 753 754 string LeftOOBWriteMessage(int oob_distance) { 755 return LeftOOBErrorMessage(oob_distance, /*is_write*/true); 756 } 757 758 string LeftOOBReadMessage(int oob_distance) { 759 return LeftOOBErrorMessage(oob_distance, /*is_write*/false); 760 } 761 762 string LeftOOBAccessMessage(int oob_distance) { 763 assert(oob_distance > 0); 764 char expected_str[100]; 765 sprintf(expected_str, "located %d bytes to the left", oob_distance); 766 return string(expected_str); 767 } 768 769 char* MallocAndMemsetString(size_t size, char ch) { 770 char *s = Ident((char*)malloc(size)); 771 memset(s, ch, size); 772 return s; 773 } 774 775 char* MallocAndMemsetString(size_t size) { 776 return MallocAndMemsetString(size, 'z'); 777 } 778 779 #if defined(__linux__) && !defined(__ANDROID__) 780 #define READ_TEST(READ_N_BYTES) \ 781 char *x = new char[10]; \ 782 int fd = open("/proc/self/stat", O_RDONLY); \ 783 ASSERT_GT(fd, 0); \ 784 EXPECT_DEATH(READ_N_BYTES, \ 785 ASAN_PCRE_DOTALL \ 786 "AddressSanitizer: heap-buffer-overflow" \ 787 ".* is located 0 bytes to the right of 10-byte region"); \ 788 close(fd); \ 789 delete [] x; \ 790 791 TEST(AddressSanitizer, pread) { 792 READ_TEST(pread(fd, x, 15, 0)); 793 } 794 795 TEST(AddressSanitizer, pread64) { 796 READ_TEST(pread64(fd, x, 15, 0)); 797 } 798 799 TEST(AddressSanitizer, read) { 800 READ_TEST(read(fd, x, 15)); 801 } 802 #endif // defined(__linux__) && !defined(__ANDROID__) 803 804 // This test case fails 805 // Clang optimizes memcpy/memset calls which lead to unaligned access 806 TEST(AddressSanitizer, DISABLED_MemIntrinsicUnalignedAccessTest) { 807 int size = Ident(4096); 808 char *s = Ident((char*)malloc(size)); 809 EXPECT_DEATH(memset(s + size - 1, 0, 2), RightOOBWriteMessage(0)); 810 free(s); 811 } 812 813 NOINLINE static int LargeFunction(bool do_bad_access) { 814 int *x = new int[100]; 815 x[0]++; 816 x[1]++; 817 x[2]++; 818 x[3]++; 819 x[4]++; 820 x[5]++; 821 x[6]++; 822 x[7]++; 823 x[8]++; 824 x[9]++; 825 826 x[do_bad_access ? 100 : 0]++; int res = __LINE__; 827 828 x[10]++; 829 x[11]++; 830 x[12]++; 831 x[13]++; 832 x[14]++; 833 x[15]++; 834 x[16]++; 835 x[17]++; 836 x[18]++; 837 x[19]++; 838 839 delete[] x; 840 return res; 841 } 842 843 // Test the we have correct debug info for the failing instruction. 844 // This test requires the in-process symbolizer to be enabled by default. 845 TEST(AddressSanitizer, DISABLED_LargeFunctionSymbolizeTest) { 846 int failing_line = LargeFunction(false); 847 char expected_warning[128]; 848 sprintf(expected_warning, "LargeFunction.*asan_test.*:%d", failing_line); 849 EXPECT_DEATH(LargeFunction(true), expected_warning); 850 } 851 852 // Check that we unwind and symbolize correctly. 853 TEST(AddressSanitizer, DISABLED_MallocFreeUnwindAndSymbolizeTest) { 854 int *a = (int*)malloc_aaa(sizeof(int)); 855 *a = 1; 856 free_aaa(a); 857 EXPECT_DEATH(*a = 1, "free_ccc.*free_bbb.*free_aaa.*" 858 "malloc_fff.*malloc_eee.*malloc_ddd"); 859 } 860 861 static bool TryToSetThreadName(const char *name) { 862 #if defined(__linux__) && defined(PR_SET_NAME) 863 return 0 == prctl(PR_SET_NAME, (unsigned long)name, 0, 0, 0); 864 #else 865 return false; 866 #endif 867 } 868 869 void *ThreadedTestAlloc(void *a) { 870 EXPECT_EQ(true, TryToSetThreadName("AllocThr")); 871 int **p = (int**)a; 872 *p = new int; 873 return 0; 874 } 875 876 void *ThreadedTestFree(void *a) { 877 EXPECT_EQ(true, TryToSetThreadName("FreeThr")); 878 int **p = (int**)a; 879 delete *p; 880 return 0; 881 } 882 883 void *ThreadedTestUse(void *a) { 884 EXPECT_EQ(true, TryToSetThreadName("UseThr")); 885 int **p = (int**)a; 886 **p = 1; 887 return 0; 888 } 889 890 void ThreadedTestSpawn() { 891 pthread_t t; 892 int *x; 893 PTHREAD_CREATE(&t, 0, ThreadedTestAlloc, &x); 894 PTHREAD_JOIN(t, 0); 895 PTHREAD_CREATE(&t, 0, ThreadedTestFree, &x); 896 PTHREAD_JOIN(t, 0); 897 PTHREAD_CREATE(&t, 0, ThreadedTestUse, &x); 898 PTHREAD_JOIN(t, 0); 899 } 900 901 #if !defined(_WIN32) // FIXME: This should be a lit test. 902 TEST(AddressSanitizer, ThreadedTest) { 903 EXPECT_DEATH(ThreadedTestSpawn(), 904 ASAN_PCRE_DOTALL 905 "Thread T.*created" 906 ".*Thread T.*created" 907 ".*Thread T.*created"); 908 } 909 #endif 910 911 void *ThreadedTestFunc(void *unused) { 912 // Check if prctl(PR_SET_NAME) is supported. Return if not. 913 if (!TryToSetThreadName("TestFunc")) 914 return 0; 915 EXPECT_DEATH(ThreadedTestSpawn(), 916 ASAN_PCRE_DOTALL 917 "WRITE .*thread T. .UseThr." 918 ".*freed by thread T. .FreeThr. here:" 919 ".*previously allocated by thread T. .AllocThr. here:" 920 ".*Thread T. .UseThr. created by T.*TestFunc" 921 ".*Thread T. .FreeThr. created by T" 922 ".*Thread T. .AllocThr. created by T" 923 ""); 924 return 0; 925 } 926 927 TEST(AddressSanitizer, ThreadNamesTest) { 928 // Run ThreadedTestFunc in a separate thread because it tries to set a 929 // thread name and we don't want to change the main thread's name. 930 pthread_t t; 931 PTHREAD_CREATE(&t, 0, ThreadedTestFunc, 0); 932 PTHREAD_JOIN(t, 0); 933 } 934 935 #if ASAN_NEEDS_SEGV 936 TEST(AddressSanitizer, ShadowGapTest) { 937 #if SANITIZER_WORDSIZE == 32 938 char *addr = (char*)0x22000000; 939 #else 940 # if defined(__powerpc64__) 941 char *addr = (char*)0x024000800000; 942 # elif defined(__s390x__) 943 char *addr = (char*)0x11000000000000; 944 # else 945 char *addr = (char*)0x0000100000080000; 946 # endif 947 #endif 948 EXPECT_DEATH(*addr = 1, "AddressSanitizer: SEGV on unknown"); 949 } 950 #endif // ASAN_NEEDS_SEGV 951 952 extern "C" { 953 NOINLINE static void UseThenFreeThenUse() { 954 char *x = Ident((char*)malloc(8)); 955 *x = 1; 956 free_aaa(x); 957 *x = 2; 958 } 959 } 960 961 TEST(AddressSanitizer, UseThenFreeThenUseTest) { 962 EXPECT_DEATH(UseThenFreeThenUse(), "freed by thread"); 963 } 964 965 TEST(AddressSanitizer, StrDupTest) { 966 free(strdup(Ident("123"))); 967 } 968 969 // Currently we create and poison redzone at right of global variables. 970 static char static110[110]; 971 const char ConstGlob[7] = {1, 2, 3, 4, 5, 6, 7}; 972 static const char StaticConstGlob[3] = {9, 8, 7}; 973 974 TEST(AddressSanitizer, GlobalTest) { 975 static char func_static15[15]; 976 977 static char fs1[10]; 978 static char fs2[10]; 979 static char fs3[10]; 980 981 glob5[Ident(0)] = 0; 982 glob5[Ident(1)] = 0; 983 glob5[Ident(2)] = 0; 984 glob5[Ident(3)] = 0; 985 glob5[Ident(4)] = 0; 986 987 EXPECT_DEATH(glob5[Ident(5)] = 0, 988 "0 bytes to the right of global variable.*glob5.* size 5"); 989 EXPECT_DEATH(glob5[Ident(5+6)] = 0, 990 "6 bytes to the right of global variable.*glob5.* size 5"); 991 Ident(static110); // avoid optimizations 992 static110[Ident(0)] = 0; 993 static110[Ident(109)] = 0; 994 EXPECT_DEATH(static110[Ident(110)] = 0, 995 "0 bytes to the right of global variable"); 996 EXPECT_DEATH(static110[Ident(110+7)] = 0, 997 "7 bytes to the right of global variable"); 998 999 Ident(func_static15); // avoid optimizations 1000 func_static15[Ident(0)] = 0; 1001 EXPECT_DEATH(func_static15[Ident(15)] = 0, 1002 "0 bytes to the right of global variable"); 1003 EXPECT_DEATH(func_static15[Ident(15 + 9)] = 0, 1004 "9 bytes to the right of global variable"); 1005 1006 Ident(fs1); 1007 Ident(fs2); 1008 Ident(fs3); 1009 1010 // We don't create left redzones, so this is not 100% guaranteed to fail. 1011 // But most likely will. 1012 EXPECT_DEATH(fs2[Ident(-1)] = 0, "is located.*of global variable"); 1013 1014 EXPECT_DEATH(Ident(Ident(ConstGlob)[8]), 1015 "is located 1 bytes to the right of .*ConstGlob"); 1016 EXPECT_DEATH(Ident(Ident(StaticConstGlob)[5]), 1017 "is located 2 bytes to the right of .*StaticConstGlob"); 1018 1019 // call stuff from another file. 1020 GlobalsTest(0); 1021 } 1022 1023 TEST(AddressSanitizer, GlobalStringConstTest) { 1024 static const char *zoo = "FOOBAR123"; 1025 const char *p = Ident(zoo); 1026 EXPECT_DEATH(Ident(p[15]), "is ascii string 'FOOBAR123'"); 1027 } 1028 1029 TEST(AddressSanitizer, FileNameInGlobalReportTest) { 1030 static char zoo[10]; 1031 const char *p = Ident(zoo); 1032 // The file name should be present in the report. 1033 EXPECT_DEATH(Ident(p[15]), "zoo.*asan_test."); 1034 } 1035 1036 int *ReturnsPointerToALocalObject() { 1037 int a = 0; 1038 return Ident(&a); 1039 } 1040 1041 #if ASAN_UAR == 1 1042 TEST(AddressSanitizer, LocalReferenceReturnTest) { 1043 int *(*f)() = Ident(ReturnsPointerToALocalObject); 1044 int *p = f(); 1045 // Call 'f' a few more times, 'p' should still be poisoned. 1046 for (int i = 0; i < 32; i++) 1047 f(); 1048 EXPECT_DEATH(*p = 1, "AddressSanitizer: stack-use-after-return"); 1049 EXPECT_DEATH(*p = 1, "is located.*in frame .*ReturnsPointerToALocal"); 1050 } 1051 #endif 1052 1053 template <int kSize> 1054 NOINLINE static void FuncWithStack() { 1055 char x[kSize]; 1056 Ident(x)[0] = 0; 1057 Ident(x)[kSize-1] = 0; 1058 } 1059 1060 static void LotsOfStackReuse() { 1061 int LargeStack[10000]; 1062 Ident(LargeStack)[0] = 0; 1063 for (int i = 0; i < 10000; i++) { 1064 FuncWithStack<128 * 1>(); 1065 FuncWithStack<128 * 2>(); 1066 FuncWithStack<128 * 4>(); 1067 FuncWithStack<128 * 8>(); 1068 FuncWithStack<128 * 16>(); 1069 FuncWithStack<128 * 32>(); 1070 FuncWithStack<128 * 64>(); 1071 FuncWithStack<128 * 128>(); 1072 FuncWithStack<128 * 256>(); 1073 FuncWithStack<128 * 512>(); 1074 Ident(LargeStack)[0] = 0; 1075 } 1076 } 1077 1078 TEST(AddressSanitizer, StressStackReuseTest) { 1079 LotsOfStackReuse(); 1080 } 1081 1082 TEST(AddressSanitizer, ThreadedStressStackReuseTest) { 1083 const int kNumThreads = 20; 1084 pthread_t t[kNumThreads]; 1085 for (int i = 0; i < kNumThreads; i++) { 1086 PTHREAD_CREATE(&t[i], 0, (void* (*)(void *x))LotsOfStackReuse, 0); 1087 } 1088 for (int i = 0; i < kNumThreads; i++) { 1089 PTHREAD_JOIN(t[i], 0); 1090 } 1091 } 1092 1093 static void *PthreadExit(void *a) { 1094 pthread_exit(0); 1095 return 0; 1096 } 1097 1098 TEST(AddressSanitizer, PthreadExitTest) { 1099 pthread_t t; 1100 for (int i = 0; i < 1000; i++) { 1101 PTHREAD_CREATE(&t, 0, PthreadExit, 0); 1102 PTHREAD_JOIN(t, 0); 1103 } 1104 } 1105 1106 // FIXME: Why does clang-cl define __EXCEPTIONS? 1107 #if defined(__EXCEPTIONS) && !defined(_WIN32) 1108 NOINLINE static void StackReuseAndException() { 1109 int large_stack[1000]; 1110 Ident(large_stack); 1111 ASAN_THROW(1); 1112 } 1113 1114 // TODO(kcc): support exceptions with use-after-return. 1115 TEST(AddressSanitizer, DISABLED_StressStackReuseAndExceptionsTest) { 1116 for (int i = 0; i < 10000; i++) { 1117 try { 1118 StackReuseAndException(); 1119 } catch(...) { 1120 } 1121 } 1122 } 1123 #endif 1124 1125 #if !defined(_WIN32) 1126 TEST(AddressSanitizer, MlockTest) { 1127 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 1128 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 1129 EXPECT_EQ(0, munlockall()); 1130 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 1131 } 1132 #endif 1133 1134 struct LargeStruct { 1135 int foo[100]; 1136 }; 1137 1138 // Test for bug http://llvm.org/bugs/show_bug.cgi?id=11763. 1139 // Struct copy should not cause asan warning even if lhs == rhs. 1140 TEST(AddressSanitizer, LargeStructCopyTest) { 1141 LargeStruct a; 1142 *Ident(&a) = *Ident(&a); 1143 } 1144 1145 ATTRIBUTE_NO_SANITIZE_ADDRESS 1146 static void NoSanitizeAddress() { 1147 char *foo = new char[10]; 1148 Ident(foo)[10] = 0; 1149 delete [] foo; 1150 } 1151 1152 TEST(AddressSanitizer, AttributeNoSanitizeAddressTest) { 1153 Ident(NoSanitizeAddress)(); 1154 } 1155 1156 // The new/delete/etc mismatch checks don't work on Android, 1157 // as calls to new/delete go through malloc/free. 1158 // OS X support is tracked here: 1159 // https://github.com/google/sanitizers/issues/131 1160 // Windows support is tracked here: 1161 // https://github.com/google/sanitizers/issues/309 1162 #if !defined(__ANDROID__) && \ 1163 !defined(__APPLE__) && \ 1164 !defined(_WIN32) 1165 static string MismatchStr(const string &str) { 1166 return string("AddressSanitizer: alloc-dealloc-mismatch \\(") + str; 1167 } 1168 1169 static string MismatchOrNewDeleteTypeStr(const string &mismatch_str) { 1170 return "(" + MismatchStr(mismatch_str) + 1171 ")|(AddressSanitizer: new-delete-type-mismatch)"; 1172 } 1173 1174 TEST(AddressSanitizer, AllocDeallocMismatch) { 1175 EXPECT_DEATH(free(Ident(new int)), 1176 MismatchStr("operator new vs free")); 1177 EXPECT_DEATH(free(Ident(new int[2])), 1178 MismatchStr("operator new \\[\\] vs free")); 1179 EXPECT_DEATH( 1180 delete (Ident(new int[2])), 1181 MismatchOrNewDeleteTypeStr("operator new \\[\\] vs operator delete")); 1182 EXPECT_DEATH(delete (Ident((int *)malloc(2 * sizeof(int)))), 1183 MismatchOrNewDeleteTypeStr("malloc vs operator delete")); 1184 EXPECT_DEATH(delete [] (Ident(new int)), 1185 MismatchStr("operator new vs operator delete \\[\\]")); 1186 EXPECT_DEATH(delete [] (Ident((int*)malloc(2 * sizeof(int)))), 1187 MismatchStr("malloc vs operator delete \\[\\]")); 1188 } 1189 #endif 1190 1191 // ------------------ demo tests; run each one-by-one ------------- 1192 // e.g. --gtest_filter=*DemoOOBLeftHigh --gtest_also_run_disabled_tests 1193 TEST(AddressSanitizer, DISABLED_DemoThreadedTest) { 1194 ThreadedTestSpawn(); 1195 } 1196 1197 void *SimpleBugOnSTack(void *x = 0) { 1198 char a[20]; 1199 Ident(a)[20] = 0; 1200 return 0; 1201 } 1202 1203 TEST(AddressSanitizer, DISABLED_DemoStackTest) { 1204 SimpleBugOnSTack(); 1205 } 1206 1207 TEST(AddressSanitizer, DISABLED_DemoThreadStackTest) { 1208 pthread_t t; 1209 PTHREAD_CREATE(&t, 0, SimpleBugOnSTack, 0); 1210 PTHREAD_JOIN(t, 0); 1211 } 1212 1213 TEST(AddressSanitizer, DISABLED_DemoUAFLowIn) { 1214 uaf_test<U1>(10, 0); 1215 } 1216 TEST(AddressSanitizer, DISABLED_DemoUAFLowLeft) { 1217 uaf_test<U1>(10, -2); 1218 } 1219 TEST(AddressSanitizer, DISABLED_DemoUAFLowRight) { 1220 uaf_test<U1>(10, 10); 1221 } 1222 1223 TEST(AddressSanitizer, DISABLED_DemoUAFHigh) { 1224 uaf_test<U1>(kLargeMalloc, 0); 1225 } 1226 1227 TEST(AddressSanitizer, DISABLED_DemoOOM) { 1228 size_t size = SANITIZER_WORDSIZE == 64 ? (size_t)(1ULL << 40) : (0xf0000000); 1229 printf("%p\n", malloc(size)); 1230 } 1231 1232 TEST(AddressSanitizer, DISABLED_DemoDoubleFreeTest) { 1233 DoubleFree(); 1234 } 1235 1236 TEST(AddressSanitizer, DISABLED_DemoNullDerefTest) { 1237 int *a = 0; 1238 Ident(a)[10] = 0; 1239 } 1240 1241 TEST(AddressSanitizer, DISABLED_DemoFunctionStaticTest) { 1242 static char a[100]; 1243 static char b[100]; 1244 static char c[100]; 1245 Ident(a); 1246 Ident(b); 1247 Ident(c); 1248 Ident(a)[5] = 0; 1249 Ident(b)[105] = 0; 1250 Ident(a)[5] = 0; 1251 } 1252 1253 TEST(AddressSanitizer, DISABLED_DemoTooMuchMemoryTest) { 1254 const size_t kAllocSize = (1 << 28) - 1024; 1255 size_t total_size = 0; 1256 while (true) { 1257 void *x = malloc(kAllocSize); 1258 memset(x, 0, kAllocSize); 1259 total_size += kAllocSize; 1260 fprintf(stderr, "total: %ldM %p\n", (long)total_size >> 20, x); 1261 } 1262 } 1263 1264 // https://github.com/google/sanitizers/issues/66 1265 TEST(AddressSanitizer, BufferOverflowAfterManyFrees) { 1266 for (int i = 0; i < 1000000; i++) { 1267 delete [] (Ident(new char [8644])); 1268 } 1269 char *x = new char[8192]; 1270 EXPECT_DEATH(x[Ident(8192)] = 0, "AddressSanitizer: heap-buffer-overflow"); 1271 delete [] Ident(x); 1272 } 1273 1274 1275 // Test that instrumentation of stack allocations takes into account 1276 // AllocSize of a type, and not its StoreSize (16 vs 10 bytes for long double). 1277 // See http://llvm.org/bugs/show_bug.cgi?id=12047 for more details. 1278 TEST(AddressSanitizer, LongDoubleNegativeTest) { 1279 long double a, b; 1280 static long double c; 1281 memcpy(Ident(&a), Ident(&b), sizeof(long double)); 1282 memcpy(Ident(&c), Ident(&b), sizeof(long double)); 1283 } 1284 1285 #if !defined(_WIN32) 1286 TEST(AddressSanitizer, pthread_getschedparam) { 1287 int policy; 1288 struct sched_param param; 1289 EXPECT_DEATH( 1290 pthread_getschedparam(pthread_self(), &policy, Ident(¶m) + 2), 1291 "AddressSanitizer: stack-buffer-.*flow"); 1292 EXPECT_DEATH( 1293 pthread_getschedparam(pthread_self(), Ident(&policy) - 1, ¶m), 1294 "AddressSanitizer: stack-buffer-.*flow"); 1295 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 1296 ASSERT_EQ(0, res); 1297 } 1298 #endif 1299 1300 #if SANITIZER_TEST_HAS_PRINTF_L 1301 static int vsnprintf_l_wrapper(char *s, size_t n, 1302 locale_t l, const char *format, ...) { 1303 va_list va; 1304 va_start(va, format); 1305 int res = vsnprintf_l(s, n , l, format, va); 1306 va_end(va); 1307 return res; 1308 } 1309 1310 TEST(AddressSanitizer, snprintf_l) { 1311 char buff[5]; 1312 // Check that snprintf_l() works fine with Asan. 1313 int res = snprintf_l(buff, 5, 1314 _LIBCPP_GET_C_LOCALE, "%s", "snprintf_l()"); 1315 EXPECT_EQ(12, res); 1316 // Check that vsnprintf_l() works fine with Asan. 1317 res = vsnprintf_l_wrapper(buff, 5, 1318 _LIBCPP_GET_C_LOCALE, "%s", "vsnprintf_l()"); 1319 EXPECT_EQ(13, res); 1320 1321 EXPECT_DEATH(snprintf_l(buff, 10, 1322 _LIBCPP_GET_C_LOCALE, "%s", "snprintf_l()"), 1323 "AddressSanitizer: stack-buffer-overflow"); 1324 EXPECT_DEATH(vsnprintf_l_wrapper(buff, 10, 1325 _LIBCPP_GET_C_LOCALE, "%s", "vsnprintf_l()"), 1326 "AddressSanitizer: stack-buffer-overflow"); 1327 } 1328 #endif 1329
