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 kUnknownCrash[] = "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, kUnknownCrash); 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, kUnknownCrash); 283 // ... and signal(). 284 EXPECT_EQ(0, signal(SIGSEGV, my_signal_sighandler)); 285 EXPECT_DEATH(*c = 0, kUnknownCrash); 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 TEST(AddressSanitizer, HugeMallocTest) { 304 if (SANITIZER_WORDSIZE != 64 || ASAN_AVOID_EXPENSIVE_TESTS) return; 305 size_t n_megs = 4100; 306 EXPECT_DEATH(Ident((char*)malloc(n_megs << 20))[-1] = 0, 307 "is located 1 bytes to the left|" 308 "AddressSanitizer failed to allocate"); 309 } 310 311 #if SANITIZER_TEST_HAS_MEMALIGN 312 void MemalignRun(size_t align, size_t size, int idx) { 313 char *p = (char *)memalign(align, size); 314 Ident(p)[idx] = 0; 315 free(p); 316 } 317 318 TEST(AddressSanitizer, memalign) { 319 for (int align = 16; align <= (1 << 23); align *= 2) { 320 size_t size = align * 5; 321 EXPECT_DEATH(MemalignRun(align, size, -1), 322 "is located 1 bytes to the left"); 323 EXPECT_DEATH(MemalignRun(align, size, size + 1), 324 "is located 1 bytes to the right"); 325 } 326 } 327 #endif // SANITIZER_TEST_HAS_MEMALIGN 328 329 void *ManyThreadsWorker(void *a) { 330 for (int iter = 0; iter < 100; iter++) { 331 for (size_t size = 100; size < 2000; size *= 2) { 332 free(Ident(malloc(size))); 333 } 334 } 335 return 0; 336 } 337 338 TEST(AddressSanitizer, ManyThreadsTest) { 339 const size_t kNumThreads = 340 (SANITIZER_WORDSIZE == 32 || ASAN_AVOID_EXPENSIVE_TESTS) ? 30 : 1000; 341 pthread_t t[kNumThreads]; 342 for (size_t i = 0; i < kNumThreads; i++) { 343 PTHREAD_CREATE(&t[i], 0, ManyThreadsWorker, (void*)i); 344 } 345 for (size_t i = 0; i < kNumThreads; i++) { 346 PTHREAD_JOIN(t[i], 0); 347 } 348 } 349 350 TEST(AddressSanitizer, ReallocTest) { 351 const int kMinElem = 5; 352 int *ptr = (int*)malloc(sizeof(int) * kMinElem); 353 ptr[3] = 3; 354 for (int i = 0; i < 10000; i++) { 355 ptr = (int*)realloc(ptr, 356 (my_rand() % 1000 + kMinElem) * sizeof(int)); 357 EXPECT_EQ(3, ptr[3]); 358 } 359 free(ptr); 360 // Realloc pointer returned by malloc(0). 361 int *ptr2 = Ident((int*)malloc(0)); 362 ptr2 = Ident((int*)realloc(ptr2, sizeof(*ptr2))); 363 *ptr2 = 42; 364 EXPECT_EQ(42, *ptr2); 365 free(ptr2); 366 } 367 368 TEST(AddressSanitizer, ReallocFreedPointerTest) { 369 void *ptr = Ident(malloc(42)); 370 ASSERT_TRUE(NULL != ptr); 371 free(ptr); 372 EXPECT_DEATH(ptr = realloc(ptr, 77), "attempting double-free"); 373 } 374 375 TEST(AddressSanitizer, ReallocInvalidPointerTest) { 376 void *ptr = Ident(malloc(42)); 377 EXPECT_DEATH(ptr = realloc((int*)ptr + 1, 77), "attempting free.*not malloc"); 378 free(ptr); 379 } 380 381 TEST(AddressSanitizer, ZeroSizeMallocTest) { 382 // Test that malloc(0) and similar functions don't return NULL. 383 void *ptr = Ident(malloc(0)); 384 EXPECT_TRUE(NULL != ptr); 385 free(ptr); 386 #if SANITIZER_TEST_HAS_POSIX_MEMALIGN 387 int pm_res = posix_memalign(&ptr, 1<<20, 0); 388 EXPECT_EQ(0, pm_res); 389 EXPECT_TRUE(NULL != ptr); 390 free(ptr); 391 #endif // SANITIZER_TEST_HAS_POSIX_MEMALIGN 392 int *int_ptr = new int[0]; 393 int *int_ptr2 = new int[0]; 394 EXPECT_TRUE(NULL != int_ptr); 395 EXPECT_TRUE(NULL != int_ptr2); 396 EXPECT_NE(int_ptr, int_ptr2); 397 delete[] int_ptr; 398 delete[] int_ptr2; 399 } 400 401 #if SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 402 static const char *kMallocUsableSizeErrorMsg = 403 "AddressSanitizer: attempting to call malloc_usable_size()"; 404 405 TEST(AddressSanitizer, MallocUsableSizeTest) { 406 const size_t kArraySize = 100; 407 char *array = Ident((char*)malloc(kArraySize)); 408 int *int_ptr = Ident(new int); 409 EXPECT_EQ(0U, malloc_usable_size(NULL)); 410 EXPECT_EQ(kArraySize, malloc_usable_size(array)); 411 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); 412 EXPECT_DEATH(malloc_usable_size((void*)0x123), kMallocUsableSizeErrorMsg); 413 EXPECT_DEATH(malloc_usable_size(array + kArraySize / 2), 414 kMallocUsableSizeErrorMsg); 415 free(array); 416 EXPECT_DEATH(malloc_usable_size(array), kMallocUsableSizeErrorMsg); 417 delete int_ptr; 418 } 419 #endif // SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 420 421 void WrongFree() { 422 int *x = (int*)malloc(100 * sizeof(int)); 423 // Use the allocated memory, otherwise Clang will optimize it out. 424 Ident(x); 425 free(x + 1); 426 } 427 428 #if !defined(_WIN32) // FIXME: This should be a lit test. 429 TEST(AddressSanitizer, WrongFreeTest) { 430 EXPECT_DEATH(WrongFree(), ASAN_PCRE_DOTALL 431 "ERROR: AddressSanitizer: attempting free.*not malloc" 432 ".*is located 4 bytes inside of 400-byte region" 433 ".*allocated by thread"); 434 } 435 #endif 436 437 void DoubleFree() { 438 int *x = (int*)malloc(100 * sizeof(int)); 439 fprintf(stderr, "DoubleFree: x=%p\n", (void *)x); 440 free(x); 441 free(x); 442 fprintf(stderr, "should have failed in the second free(%p)\n", (void *)x); 443 abort(); 444 } 445 446 #if !defined(_WIN32) // FIXME: This should be a lit test. 447 TEST(AddressSanitizer, DoubleFreeTest) { 448 EXPECT_DEATH(DoubleFree(), ASAN_PCRE_DOTALL 449 "ERROR: AddressSanitizer: attempting double-free" 450 ".*is located 0 bytes inside of 400-byte region" 451 ".*freed by thread T0 here" 452 ".*previously allocated by thread T0 here"); 453 } 454 #endif 455 456 template<int kSize> 457 NOINLINE void SizedStackTest() { 458 char a[kSize]; 459 char *A = Ident((char*)&a); 460 const char *expected_death = "AddressSanitizer: stack-buffer-"; 461 for (size_t i = 0; i < kSize; i++) 462 A[i] = i; 463 EXPECT_DEATH(A[-1] = 0, expected_death); 464 EXPECT_DEATH(A[-5] = 0, expected_death); 465 EXPECT_DEATH(A[kSize] = 0, expected_death); 466 EXPECT_DEATH(A[kSize + 1] = 0, expected_death); 467 EXPECT_DEATH(A[kSize + 5] = 0, expected_death); 468 if (kSize > 16) 469 EXPECT_DEATH(A[kSize + 31] = 0, expected_death); 470 } 471 472 TEST(AddressSanitizer, SimpleStackTest) { 473 SizedStackTest<1>(); 474 SizedStackTest<2>(); 475 SizedStackTest<3>(); 476 SizedStackTest<4>(); 477 SizedStackTest<5>(); 478 SizedStackTest<6>(); 479 SizedStackTest<7>(); 480 SizedStackTest<16>(); 481 SizedStackTest<25>(); 482 SizedStackTest<34>(); 483 SizedStackTest<43>(); 484 SizedStackTest<51>(); 485 SizedStackTest<62>(); 486 SizedStackTest<64>(); 487 SizedStackTest<128>(); 488 } 489 490 #if !defined(_WIN32) 491 // FIXME: It's a bit hard to write multi-line death test expectations 492 // in a portable way. Anyways, this should just be turned into a lit test. 493 TEST(AddressSanitizer, ManyStackObjectsTest) { 494 char XXX[10]; 495 char YYY[20]; 496 char ZZZ[30]; 497 Ident(XXX); 498 Ident(YYY); 499 EXPECT_DEATH(Ident(ZZZ)[-1] = 0, ASAN_PCRE_DOTALL "XXX.*YYY.*ZZZ"); 500 } 501 #endif 502 503 #if 0 // This test requires online symbolizer. 504 // Moved to lit_tests/stack-oob-frames.cc. 505 // Reenable here once we have online symbolizer by default. 506 NOINLINE static void Frame0(int frame, char *a, char *b, char *c) { 507 char d[4] = {0}; 508 char *D = Ident(d); 509 switch (frame) { 510 case 3: a[5]++; break; 511 case 2: b[5]++; break; 512 case 1: c[5]++; break; 513 case 0: D[5]++; break; 514 } 515 } 516 NOINLINE static void Frame1(int frame, char *a, char *b) { 517 char c[4] = {0}; Frame0(frame, a, b, c); 518 break_optimization(0); 519 } 520 NOINLINE static void Frame2(int frame, char *a) { 521 char b[4] = {0}; Frame1(frame, a, b); 522 break_optimization(0); 523 } 524 NOINLINE static void Frame3(int frame) { 525 char a[4] = {0}; Frame2(frame, a); 526 break_optimization(0); 527 } 528 529 TEST(AddressSanitizer, GuiltyStackFrame0Test) { 530 EXPECT_DEATH(Frame3(0), "located .*in frame <.*Frame0"); 531 } 532 TEST(AddressSanitizer, GuiltyStackFrame1Test) { 533 EXPECT_DEATH(Frame3(1), "located .*in frame <.*Frame1"); 534 } 535 TEST(AddressSanitizer, GuiltyStackFrame2Test) { 536 EXPECT_DEATH(Frame3(2), "located .*in frame <.*Frame2"); 537 } 538 TEST(AddressSanitizer, GuiltyStackFrame3Test) { 539 EXPECT_DEATH(Frame3(3), "located .*in frame <.*Frame3"); 540 } 541 #endif 542 543 NOINLINE void LongJmpFunc1(jmp_buf buf) { 544 // create three red zones for these two stack objects. 545 int a; 546 int b; 547 548 int *A = Ident(&a); 549 int *B = Ident(&b); 550 *A = *B; 551 longjmp(buf, 1); 552 } 553 554 NOINLINE void TouchStackFunc() { 555 int a[100]; // long array will intersect with redzones from LongJmpFunc1. 556 int *A = Ident(a); 557 for (int i = 0; i < 100; i++) 558 A[i] = i*i; 559 } 560 561 // Test that we handle longjmp and do not report false positives on stack. 562 TEST(AddressSanitizer, LongJmpTest) { 563 static jmp_buf buf; 564 if (!setjmp(buf)) { 565 LongJmpFunc1(buf); 566 } else { 567 TouchStackFunc(); 568 } 569 } 570 571 #if !defined(_WIN32) // Only basic longjmp is available on Windows. 572 NOINLINE void UnderscopeLongJmpFunc1(jmp_buf buf) { 573 // create three red zones for these two stack objects. 574 int a; 575 int b; 576 577 int *A = Ident(&a); 578 int *B = Ident(&b); 579 *A = *B; 580 _longjmp(buf, 1); 581 } 582 583 NOINLINE void SigLongJmpFunc1(sigjmp_buf buf) { 584 // create three red zones for these two stack objects. 585 int a; 586 int b; 587 588 int *A = Ident(&a); 589 int *B = Ident(&b); 590 *A = *B; 591 siglongjmp(buf, 1); 592 } 593 594 #if !defined(__ANDROID__) && !defined(__arm__) && \ 595 !defined(__powerpc64__) && !defined(__powerpc__) && \ 596 !defined(__aarch64__) && !defined(__mips__) && \ 597 !defined(__mips64) 598 NOINLINE void BuiltinLongJmpFunc1(jmp_buf buf) { 599 // create three red zones for these two stack objects. 600 int a; 601 int b; 602 603 int *A = Ident(&a); 604 int *B = Ident(&b); 605 *A = *B; 606 __builtin_longjmp((void**)buf, 1); 607 } 608 609 // Does not work on Power and ARM: 610 // https://code.google.com/p/address-sanitizer/issues/detail?id=185 611 TEST(AddressSanitizer, BuiltinLongJmpTest) { 612 static jmp_buf buf; 613 if (!__builtin_setjmp((void**)buf)) { 614 BuiltinLongJmpFunc1(buf); 615 } else { 616 TouchStackFunc(); 617 } 618 } 619 #endif // !defined(__ANDROID__) && !defined(__powerpc64__) && 620 // !defined(__powerpc__) && !defined(__arm__) && 621 // !defined(__mips__) && !defined(__mips64) 622 623 TEST(AddressSanitizer, UnderscopeLongJmpTest) { 624 static jmp_buf buf; 625 if (!_setjmp(buf)) { 626 UnderscopeLongJmpFunc1(buf); 627 } else { 628 TouchStackFunc(); 629 } 630 } 631 632 TEST(AddressSanitizer, SigLongJmpTest) { 633 static sigjmp_buf buf; 634 if (!sigsetjmp(buf, 1)) { 635 SigLongJmpFunc1(buf); 636 } else { 637 TouchStackFunc(); 638 } 639 } 640 #endif 641 642 // FIXME: Why does clang-cl define __EXCEPTIONS? 643 #if defined(__EXCEPTIONS) && !defined(_WIN32) 644 NOINLINE void ThrowFunc() { 645 // create three red zones for these two stack objects. 646 int a; 647 int b; 648 649 int *A = Ident(&a); 650 int *B = Ident(&b); 651 *A = *B; 652 ASAN_THROW(1); 653 } 654 655 TEST(AddressSanitizer, CxxExceptionTest) { 656 if (ASAN_UAR) return; 657 // TODO(kcc): this test crashes on 32-bit for some reason... 658 if (SANITIZER_WORDSIZE == 32) return; 659 try { 660 ThrowFunc(); 661 } catch(...) {} 662 TouchStackFunc(); 663 } 664 #endif 665 666 void *ThreadStackReuseFunc1(void *unused) { 667 // create three red zones for these two stack objects. 668 int a; 669 int b; 670 671 int *A = Ident(&a); 672 int *B = Ident(&b); 673 *A = *B; 674 pthread_exit(0); 675 return 0; 676 } 677 678 void *ThreadStackReuseFunc2(void *unused) { 679 TouchStackFunc(); 680 return 0; 681 } 682 683 TEST(AddressSanitizer, ThreadStackReuseTest) { 684 pthread_t t; 685 PTHREAD_CREATE(&t, 0, ThreadStackReuseFunc1, 0); 686 PTHREAD_JOIN(t, 0); 687 PTHREAD_CREATE(&t, 0, ThreadStackReuseFunc2, 0); 688 PTHREAD_JOIN(t, 0); 689 } 690 691 #if defined(__i686__) || defined(__x86_64__) 692 #include <emmintrin.h> 693 TEST(AddressSanitizer, Store128Test) { 694 char *a = Ident((char*)malloc(Ident(12))); 695 char *p = a; 696 if (((uintptr_t)a % 16) != 0) 697 p = a + 8; 698 assert(((uintptr_t)p % 16) == 0); 699 __m128i value_wide = _mm_set1_epi16(0x1234); 700 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 701 "AddressSanitizer: heap-buffer-overflow"); 702 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 703 "WRITE of size 16"); 704 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 705 "located 0 bytes to the right of 12-byte"); 706 free(a); 707 } 708 #endif 709 710 // FIXME: All tests that use this function should be turned into lit tests. 711 string RightOOBErrorMessage(int oob_distance, bool is_write) { 712 assert(oob_distance >= 0); 713 char expected_str[100]; 714 sprintf(expected_str, ASAN_PCRE_DOTALL 715 #if !GTEST_USES_SIMPLE_RE 716 "buffer-overflow.*%s.*" 717 #endif 718 "located %d bytes to the right", 719 #if !GTEST_USES_SIMPLE_RE 720 is_write ? "WRITE" : "READ", 721 #endif 722 oob_distance); 723 return string(expected_str); 724 } 725 726 string RightOOBWriteMessage(int oob_distance) { 727 return RightOOBErrorMessage(oob_distance, /*is_write*/true); 728 } 729 730 string RightOOBReadMessage(int oob_distance) { 731 return RightOOBErrorMessage(oob_distance, /*is_write*/false); 732 } 733 734 // FIXME: All tests that use this function should be turned into lit tests. 735 string LeftOOBErrorMessage(int oob_distance, bool is_write) { 736 assert(oob_distance > 0); 737 char expected_str[100]; 738 sprintf(expected_str, 739 #if !GTEST_USES_SIMPLE_RE 740 ASAN_PCRE_DOTALL "%s.*" 741 #endif 742 "located %d bytes to the left", 743 #if !GTEST_USES_SIMPLE_RE 744 is_write ? "WRITE" : "READ", 745 #endif 746 oob_distance); 747 return string(expected_str); 748 } 749 750 string LeftOOBWriteMessage(int oob_distance) { 751 return LeftOOBErrorMessage(oob_distance, /*is_write*/true); 752 } 753 754 string LeftOOBReadMessage(int oob_distance) { 755 return LeftOOBErrorMessage(oob_distance, /*is_write*/false); 756 } 757 758 string LeftOOBAccessMessage(int oob_distance) { 759 assert(oob_distance > 0); 760 char expected_str[100]; 761 sprintf(expected_str, "located %d bytes to the left", oob_distance); 762 return string(expected_str); 763 } 764 765 char* MallocAndMemsetString(size_t size, char ch) { 766 char *s = Ident((char*)malloc(size)); 767 memset(s, ch, size); 768 return s; 769 } 770 771 char* MallocAndMemsetString(size_t size) { 772 return MallocAndMemsetString(size, 'z'); 773 } 774 775 #if defined(__linux__) && !defined(__ANDROID__) 776 #define READ_TEST(READ_N_BYTES) \ 777 char *x = new char[10]; \ 778 int fd = open("/proc/self/stat", O_RDONLY); \ 779 ASSERT_GT(fd, 0); \ 780 EXPECT_DEATH(READ_N_BYTES, \ 781 ASAN_PCRE_DOTALL \ 782 "AddressSanitizer: heap-buffer-overflow" \ 783 ".* is located 0 bytes to the right of 10-byte region"); \ 784 close(fd); \ 785 delete [] x; \ 786 787 TEST(AddressSanitizer, pread) { 788 READ_TEST(pread(fd, x, 15, 0)); 789 } 790 791 TEST(AddressSanitizer, pread64) { 792 READ_TEST(pread64(fd, x, 15, 0)); 793 } 794 795 TEST(AddressSanitizer, read) { 796 READ_TEST(read(fd, x, 15)); 797 } 798 #endif // defined(__linux__) && !defined(__ANDROID__) 799 800 // This test case fails 801 // Clang optimizes memcpy/memset calls which lead to unaligned access 802 TEST(AddressSanitizer, DISABLED_MemIntrinsicUnalignedAccessTest) { 803 int size = Ident(4096); 804 char *s = Ident((char*)malloc(size)); 805 EXPECT_DEATH(memset(s + size - 1, 0, 2), RightOOBWriteMessage(0)); 806 free(s); 807 } 808 809 // TODO(samsonov): Add a test with malloc(0) 810 // TODO(samsonov): Add tests for str* and mem* functions. 811 812 NOINLINE static int LargeFunction(bool do_bad_access) { 813 int *x = new int[100]; 814 x[0]++; 815 x[1]++; 816 x[2]++; 817 x[3]++; 818 x[4]++; 819 x[5]++; 820 x[6]++; 821 x[7]++; 822 x[8]++; 823 x[9]++; 824 825 x[do_bad_access ? 100 : 0]++; int res = __LINE__; 826 827 x[10]++; 828 x[11]++; 829 x[12]++; 830 x[13]++; 831 x[14]++; 832 x[15]++; 833 x[16]++; 834 x[17]++; 835 x[18]++; 836 x[19]++; 837 838 delete[] x; 839 return res; 840 } 841 842 // Test the we have correct debug info for the failing instruction. 843 // This test requires the in-process symbolizer to be enabled by default. 844 TEST(AddressSanitizer, DISABLED_LargeFunctionSymbolizeTest) { 845 int failing_line = LargeFunction(false); 846 char expected_warning[128]; 847 sprintf(expected_warning, "LargeFunction.*asan_test.*:%d", failing_line); 848 EXPECT_DEATH(LargeFunction(true), expected_warning); 849 } 850 851 // Check that we unwind and symbolize correctly. 852 TEST(AddressSanitizer, DISABLED_MallocFreeUnwindAndSymbolizeTest) { 853 int *a = (int*)malloc_aaa(sizeof(int)); 854 *a = 1; 855 free_aaa(a); 856 EXPECT_DEATH(*a = 1, "free_ccc.*free_bbb.*free_aaa.*" 857 "malloc_fff.*malloc_eee.*malloc_ddd"); 858 } 859 860 static bool TryToSetThreadName(const char *name) { 861 #if defined(__linux__) && defined(PR_SET_NAME) 862 return 0 == prctl(PR_SET_NAME, (unsigned long)name, 0, 0, 0); 863 #else 864 return false; 865 #endif 866 } 867 868 void *ThreadedTestAlloc(void *a) { 869 EXPECT_EQ(true, TryToSetThreadName("AllocThr")); 870 int **p = (int**)a; 871 *p = new int; 872 return 0; 873 } 874 875 void *ThreadedTestFree(void *a) { 876 EXPECT_EQ(true, TryToSetThreadName("FreeThr")); 877 int **p = (int**)a; 878 delete *p; 879 return 0; 880 } 881 882 void *ThreadedTestUse(void *a) { 883 EXPECT_EQ(true, TryToSetThreadName("UseThr")); 884 int **p = (int**)a; 885 **p = 1; 886 return 0; 887 } 888 889 void ThreadedTestSpawn() { 890 pthread_t t; 891 int *x; 892 PTHREAD_CREATE(&t, 0, ThreadedTestAlloc, &x); 893 PTHREAD_JOIN(t, 0); 894 PTHREAD_CREATE(&t, 0, ThreadedTestFree, &x); 895 PTHREAD_JOIN(t, 0); 896 PTHREAD_CREATE(&t, 0, ThreadedTestUse, &x); 897 PTHREAD_JOIN(t, 0); 898 } 899 900 #if !defined(_WIN32) // FIXME: This should be a lit test. 901 TEST(AddressSanitizer, ThreadedTest) { 902 EXPECT_DEATH(ThreadedTestSpawn(), 903 ASAN_PCRE_DOTALL 904 "Thread T.*created" 905 ".*Thread T.*created" 906 ".*Thread T.*created"); 907 } 908 #endif 909 910 void *ThreadedTestFunc(void *unused) { 911 // Check if prctl(PR_SET_NAME) is supported. Return if not. 912 if (!TryToSetThreadName("TestFunc")) 913 return 0; 914 EXPECT_DEATH(ThreadedTestSpawn(), 915 ASAN_PCRE_DOTALL 916 "WRITE .*thread T. .UseThr." 917 ".*freed by thread T. .FreeThr. here:" 918 ".*previously allocated by thread T. .AllocThr. here:" 919 ".*Thread T. .UseThr. created by T.*TestFunc" 920 ".*Thread T. .FreeThr. created by T" 921 ".*Thread T. .AllocThr. created by T" 922 ""); 923 return 0; 924 } 925 926 TEST(AddressSanitizer, ThreadNamesTest) { 927 // Run ThreadedTestFunc in a separate thread because it tries to set a 928 // thread name and we don't want to change the main thread's name. 929 pthread_t t; 930 PTHREAD_CREATE(&t, 0, ThreadedTestFunc, 0); 931 PTHREAD_JOIN(t, 0); 932 } 933 934 #if ASAN_NEEDS_SEGV 935 TEST(AddressSanitizer, ShadowGapTest) { 936 #if SANITIZER_WORDSIZE == 32 937 char *addr = (char*)0x22000000; 938 #else 939 # if defined(__powerpc64__) 940 char *addr = (char*)0x024000800000; 941 # else 942 char *addr = (char*)0x0000100000080000; 943 # endif 944 #endif 945 EXPECT_DEATH(*addr = 1, "AddressSanitizer: SEGV on unknown"); 946 } 947 #endif // ASAN_NEEDS_SEGV 948 949 extern "C" { 950 NOINLINE static void UseThenFreeThenUse() { 951 char *x = Ident((char*)malloc(8)); 952 *x = 1; 953 free_aaa(x); 954 *x = 2; 955 } 956 } 957 958 TEST(AddressSanitizer, UseThenFreeThenUseTest) { 959 EXPECT_DEATH(UseThenFreeThenUse(), "freed by thread"); 960 } 961 962 TEST(AddressSanitizer, StrDupTest) { 963 free(strdup(Ident("123"))); 964 } 965 966 // Currently we create and poison redzone at right of global variables. 967 static char static110[110]; 968 const char ConstGlob[7] = {1, 2, 3, 4, 5, 6, 7}; 969 static const char StaticConstGlob[3] = {9, 8, 7}; 970 971 TEST(AddressSanitizer, GlobalTest) { 972 static char func_static15[15]; 973 974 static char fs1[10]; 975 static char fs2[10]; 976 static char fs3[10]; 977 978 glob5[Ident(0)] = 0; 979 glob5[Ident(1)] = 0; 980 glob5[Ident(2)] = 0; 981 glob5[Ident(3)] = 0; 982 glob5[Ident(4)] = 0; 983 984 EXPECT_DEATH(glob5[Ident(5)] = 0, 985 "0 bytes to the right of global variable.*glob5.* size 5"); 986 EXPECT_DEATH(glob5[Ident(5+6)] = 0, 987 "6 bytes to the right of global variable.*glob5.* size 5"); 988 Ident(static110); // avoid optimizations 989 static110[Ident(0)] = 0; 990 static110[Ident(109)] = 0; 991 EXPECT_DEATH(static110[Ident(110)] = 0, 992 "0 bytes to the right of global variable"); 993 EXPECT_DEATH(static110[Ident(110+7)] = 0, 994 "7 bytes to the right of global variable"); 995 996 Ident(func_static15); // avoid optimizations 997 func_static15[Ident(0)] = 0; 998 EXPECT_DEATH(func_static15[Ident(15)] = 0, 999 "0 bytes to the right of global variable"); 1000 EXPECT_DEATH(func_static15[Ident(15 + 9)] = 0, 1001 "9 bytes to the right of global variable"); 1002 1003 Ident(fs1); 1004 Ident(fs2); 1005 Ident(fs3); 1006 1007 // We don't create left redzones, so this is not 100% guaranteed to fail. 1008 // But most likely will. 1009 EXPECT_DEATH(fs2[Ident(-1)] = 0, "is located.*of global variable"); 1010 1011 EXPECT_DEATH(Ident(Ident(ConstGlob)[8]), 1012 "is located 1 bytes to the right of .*ConstGlob"); 1013 EXPECT_DEATH(Ident(Ident(StaticConstGlob)[5]), 1014 "is located 2 bytes to the right of .*StaticConstGlob"); 1015 1016 // call stuff from another file. 1017 GlobalsTest(0); 1018 } 1019 1020 TEST(AddressSanitizer, GlobalStringConstTest) { 1021 static const char *zoo = "FOOBAR123"; 1022 const char *p = Ident(zoo); 1023 EXPECT_DEATH(Ident(p[15]), "is ascii string 'FOOBAR123'"); 1024 } 1025 1026 TEST(AddressSanitizer, FileNameInGlobalReportTest) { 1027 static char zoo[10]; 1028 const char *p = Ident(zoo); 1029 // The file name should be present in the report. 1030 EXPECT_DEATH(Ident(p[15]), "zoo.*asan_test."); 1031 } 1032 1033 int *ReturnsPointerToALocalObject() { 1034 int a = 0; 1035 return Ident(&a); 1036 } 1037 1038 #if ASAN_UAR == 1 1039 TEST(AddressSanitizer, LocalReferenceReturnTest) { 1040 int *(*f)() = Ident(ReturnsPointerToALocalObject); 1041 int *p = f(); 1042 // Call 'f' a few more times, 'p' should still be poisoned. 1043 for (int i = 0; i < 32; i++) 1044 f(); 1045 EXPECT_DEATH(*p = 1, "AddressSanitizer: stack-use-after-return"); 1046 EXPECT_DEATH(*p = 1, "is located.*in frame .*ReturnsPointerToALocal"); 1047 } 1048 #endif 1049 1050 template <int kSize> 1051 NOINLINE static void FuncWithStack() { 1052 char x[kSize]; 1053 Ident(x)[0] = 0; 1054 Ident(x)[kSize-1] = 0; 1055 } 1056 1057 static void LotsOfStackReuse() { 1058 int LargeStack[10000]; 1059 Ident(LargeStack)[0] = 0; 1060 for (int i = 0; i < 10000; i++) { 1061 FuncWithStack<128 * 1>(); 1062 FuncWithStack<128 * 2>(); 1063 FuncWithStack<128 * 4>(); 1064 FuncWithStack<128 * 8>(); 1065 FuncWithStack<128 * 16>(); 1066 FuncWithStack<128 * 32>(); 1067 FuncWithStack<128 * 64>(); 1068 FuncWithStack<128 * 128>(); 1069 FuncWithStack<128 * 256>(); 1070 FuncWithStack<128 * 512>(); 1071 Ident(LargeStack)[0] = 0; 1072 } 1073 } 1074 1075 TEST(AddressSanitizer, StressStackReuseTest) { 1076 LotsOfStackReuse(); 1077 } 1078 1079 TEST(AddressSanitizer, ThreadedStressStackReuseTest) { 1080 const int kNumThreads = 20; 1081 pthread_t t[kNumThreads]; 1082 for (int i = 0; i < kNumThreads; i++) { 1083 PTHREAD_CREATE(&t[i], 0, (void* (*)(void *x))LotsOfStackReuse, 0); 1084 } 1085 for (int i = 0; i < kNumThreads; i++) { 1086 PTHREAD_JOIN(t[i], 0); 1087 } 1088 } 1089 1090 static void *PthreadExit(void *a) { 1091 pthread_exit(0); 1092 return 0; 1093 } 1094 1095 TEST(AddressSanitizer, PthreadExitTest) { 1096 pthread_t t; 1097 for (int i = 0; i < 1000; i++) { 1098 PTHREAD_CREATE(&t, 0, PthreadExit, 0); 1099 PTHREAD_JOIN(t, 0); 1100 } 1101 } 1102 1103 // FIXME: Why does clang-cl define __EXCEPTIONS? 1104 #if defined(__EXCEPTIONS) && !defined(_WIN32) 1105 NOINLINE static void StackReuseAndException() { 1106 int large_stack[1000]; 1107 Ident(large_stack); 1108 ASAN_THROW(1); 1109 } 1110 1111 // TODO(kcc): support exceptions with use-after-return. 1112 TEST(AddressSanitizer, DISABLED_StressStackReuseAndExceptionsTest) { 1113 for (int i = 0; i < 10000; i++) { 1114 try { 1115 StackReuseAndException(); 1116 } catch(...) { 1117 } 1118 } 1119 } 1120 #endif 1121 1122 #if !defined(_WIN32) 1123 TEST(AddressSanitizer, MlockTest) { 1124 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 1125 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 1126 EXPECT_EQ(0, munlockall()); 1127 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 1128 } 1129 #endif 1130 1131 struct LargeStruct { 1132 int foo[100]; 1133 }; 1134 1135 // Test for bug http://llvm.org/bugs/show_bug.cgi?id=11763. 1136 // Struct copy should not cause asan warning even if lhs == rhs. 1137 TEST(AddressSanitizer, LargeStructCopyTest) { 1138 LargeStruct a; 1139 *Ident(&a) = *Ident(&a); 1140 } 1141 1142 ATTRIBUTE_NO_SANITIZE_ADDRESS 1143 static void NoSanitizeAddress() { 1144 char *foo = new char[10]; 1145 Ident(foo)[10] = 0; 1146 delete [] foo; 1147 } 1148 1149 TEST(AddressSanitizer, AttributeNoSanitizeAddressTest) { 1150 Ident(NoSanitizeAddress)(); 1151 } 1152 1153 // The new/delete/etc mismatch checks don't work on Android, 1154 // as calls to new/delete go through malloc/free. 1155 // OS X support is tracked here: 1156 // https://code.google.com/p/address-sanitizer/issues/detail?id=131 1157 // Windows support is tracked here: 1158 // https://code.google.com/p/address-sanitizer/issues/detail?id=309 1159 #if !defined(__ANDROID__) && \ 1160 !defined(__APPLE__) && \ 1161 !defined(_WIN32) 1162 static string MismatchStr(const string &str) { 1163 return string("AddressSanitizer: alloc-dealloc-mismatch \\(") + str; 1164 } 1165 1166 TEST(AddressSanitizer, AllocDeallocMismatch) { 1167 EXPECT_DEATH(free(Ident(new int)), 1168 MismatchStr("operator new vs free")); 1169 EXPECT_DEATH(free(Ident(new int[2])), 1170 MismatchStr("operator new \\[\\] vs free")); 1171 EXPECT_DEATH(delete (Ident(new int[2])), 1172 MismatchStr("operator new \\[\\] vs operator delete")); 1173 EXPECT_DEATH(delete (Ident((int*)malloc(2 * sizeof(int)))), 1174 MismatchStr("malloc vs operator delete")); 1175 EXPECT_DEATH(delete [] (Ident(new int)), 1176 MismatchStr("operator new vs operator delete \\[\\]")); 1177 EXPECT_DEATH(delete [] (Ident((int*)malloc(2 * sizeof(int)))), 1178 MismatchStr("malloc vs operator delete \\[\\]")); 1179 } 1180 #endif 1181 1182 // ------------------ demo tests; run each one-by-one ------------- 1183 // e.g. --gtest_filter=*DemoOOBLeftHigh --gtest_also_run_disabled_tests 1184 TEST(AddressSanitizer, DISABLED_DemoThreadedTest) { 1185 ThreadedTestSpawn(); 1186 } 1187 1188 void *SimpleBugOnSTack(void *x = 0) { 1189 char a[20]; 1190 Ident(a)[20] = 0; 1191 return 0; 1192 } 1193 1194 TEST(AddressSanitizer, DISABLED_DemoStackTest) { 1195 SimpleBugOnSTack(); 1196 } 1197 1198 TEST(AddressSanitizer, DISABLED_DemoThreadStackTest) { 1199 pthread_t t; 1200 PTHREAD_CREATE(&t, 0, SimpleBugOnSTack, 0); 1201 PTHREAD_JOIN(t, 0); 1202 } 1203 1204 TEST(AddressSanitizer, DISABLED_DemoUAFLowIn) { 1205 uaf_test<U1>(10, 0); 1206 } 1207 TEST(AddressSanitizer, DISABLED_DemoUAFLowLeft) { 1208 uaf_test<U1>(10, -2); 1209 } 1210 TEST(AddressSanitizer, DISABLED_DemoUAFLowRight) { 1211 uaf_test<U1>(10, 10); 1212 } 1213 1214 TEST(AddressSanitizer, DISABLED_DemoUAFHigh) { 1215 uaf_test<U1>(kLargeMalloc, 0); 1216 } 1217 1218 TEST(AddressSanitizer, DISABLED_DemoOOM) { 1219 size_t size = SANITIZER_WORDSIZE == 64 ? (size_t)(1ULL << 40) : (0xf0000000); 1220 printf("%p\n", malloc(size)); 1221 } 1222 1223 TEST(AddressSanitizer, DISABLED_DemoDoubleFreeTest) { 1224 DoubleFree(); 1225 } 1226 1227 TEST(AddressSanitizer, DISABLED_DemoNullDerefTest) { 1228 int *a = 0; 1229 Ident(a)[10] = 0; 1230 } 1231 1232 TEST(AddressSanitizer, DISABLED_DemoFunctionStaticTest) { 1233 static char a[100]; 1234 static char b[100]; 1235 static char c[100]; 1236 Ident(a); 1237 Ident(b); 1238 Ident(c); 1239 Ident(a)[5] = 0; 1240 Ident(b)[105] = 0; 1241 Ident(a)[5] = 0; 1242 } 1243 1244 TEST(AddressSanitizer, DISABLED_DemoTooMuchMemoryTest) { 1245 const size_t kAllocSize = (1 << 28) - 1024; 1246 size_t total_size = 0; 1247 while (true) { 1248 void *x = malloc(kAllocSize); 1249 memset(x, 0, kAllocSize); 1250 total_size += kAllocSize; 1251 fprintf(stderr, "total: %ldM %p\n", (long)total_size >> 20, x); 1252 } 1253 } 1254 1255 // http://code.google.com/p/address-sanitizer/issues/detail?id=66 1256 TEST(AddressSanitizer, BufferOverflowAfterManyFrees) { 1257 for (int i = 0; i < 1000000; i++) { 1258 delete [] (Ident(new char [8644])); 1259 } 1260 char *x = new char[8192]; 1261 EXPECT_DEATH(x[Ident(8192)] = 0, "AddressSanitizer: heap-buffer-overflow"); 1262 delete [] Ident(x); 1263 } 1264 1265 1266 // Test that instrumentation of stack allocations takes into account 1267 // AllocSize of a type, and not its StoreSize (16 vs 10 bytes for long double). 1268 // See http://llvm.org/bugs/show_bug.cgi?id=12047 for more details. 1269 TEST(AddressSanitizer, LongDoubleNegativeTest) { 1270 long double a, b; 1271 static long double c; 1272 memcpy(Ident(&a), Ident(&b), sizeof(long double)); 1273 memcpy(Ident(&c), Ident(&b), sizeof(long double)); 1274 } 1275 1276 #if !defined(_WIN32) 1277 TEST(AddressSanitizer, pthread_getschedparam) { 1278 int policy; 1279 struct sched_param param; 1280 EXPECT_DEATH( 1281 pthread_getschedparam(pthread_self(), &policy, Ident(¶m) + 2), 1282 "AddressSanitizer: stack-buffer-.*flow"); 1283 EXPECT_DEATH( 1284 pthread_getschedparam(pthread_self(), Ident(&policy) - 1, ¶m), 1285 "AddressSanitizer: stack-buffer-.*flow"); 1286 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 1287 ASSERT_EQ(0, res); 1288 } 1289 #endif 1290 1291 #if SANITIZER_TEST_HAS_PRINTF_L 1292 static int vsnprintf_l_wrapper(char *s, size_t n, 1293 locale_t l, const char *format, ...) { 1294 va_list va; 1295 va_start(va, format); 1296 int res = vsnprintf_l(s, n , l, format, va); 1297 va_end(va); 1298 return res; 1299 } 1300 1301 TEST(AddressSanitizer, snprintf_l) { 1302 char buff[5]; 1303 // Check that snprintf_l() works fine with Asan. 1304 int res = snprintf_l(buff, 5, 1305 _LIBCPP_GET_C_LOCALE, "%s", "snprintf_l()"); 1306 EXPECT_EQ(12, res); 1307 // Check that vsnprintf_l() works fine with Asan. 1308 res = vsnprintf_l_wrapper(buff, 5, 1309 _LIBCPP_GET_C_LOCALE, "%s", "vsnprintf_l()"); 1310 EXPECT_EQ(13, res); 1311 1312 EXPECT_DEATH(snprintf_l(buff, 10, 1313 _LIBCPP_GET_C_LOCALE, "%s", "snprintf_l()"), 1314 "AddressSanitizer: stack-buffer-overflow"); 1315 EXPECT_DEATH(vsnprintf_l_wrapper(buff, 10, 1316 _LIBCPP_GET_C_LOCALE, "%s", "vsnprintf_l()"), 1317 "AddressSanitizer: stack-buffer-overflow"); 1318 } 1319 #endif 1320
