asan_test.cc revision 8f6a77f3f59ebc5f40f235e51836f468f30b9110
1//===-- asan_test.cc ------------*- C++ -*-===// 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#if defined(__i386__) || defined(__x86_64__) 24#include <emmintrin.h> 25#endif 26 27#include "asan_test_config.h" 28#include "asan_test_utils.h" 29 30#ifndef __APPLE__ 31#include <malloc.h> 32#else 33#include <AvailabilityMacros.h> // For MAC_OS_X_VERSION_* 34#include <CoreFoundation/CFString.h> 35#endif // __APPLE__ 36 37#ifdef __APPLE__ 38static bool APPLE = true; 39#else 40static bool APPLE = false; 41#endif 42 43#if ASAN_HAS_EXCEPTIONS 44# define ASAN_THROW(x) throw (x) 45#else 46# define ASAN_THROW(x) 47#endif 48 49#include <sys/mman.h> 50 51typedef uint8_t U1; 52typedef uint16_t U2; 53typedef uint32_t U4; 54typedef uint64_t U8; 55 56static const char *progname; 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<class 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(0, ((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<class 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<class 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#else 140 bool asan = 0; 141#endif 142 EXPECT_EQ(true, asan); 143} 144 145TEST(AddressSanitizer, SimpleDeathTest) { 146 EXPECT_DEATH(exit(1), ""); 147} 148 149TEST(AddressSanitizer, VariousMallocsTest) { 150 // fprintf(stderr, "malloc:\n"); 151 int *a = (int*)malloc(100 * sizeof(int)); 152 a[50] = 0; 153 free(a); 154 155 // fprintf(stderr, "realloc:\n"); 156 int *r = (int*)malloc(10); 157 r = (int*)realloc(r, 2000 * sizeof(int)); 158 r[1000] = 0; 159 free(r); 160 161 // fprintf(stderr, "operator new []\n"); 162 int *b = new int[100]; 163 b[50] = 0; 164 delete [] b; 165 166 // fprintf(stderr, "operator new\n"); 167 int *c = new int; 168 *c = 0; 169 delete c; 170 171#if !defined(__APPLE__) && !defined(ANDROID) 172 // fprintf(stderr, "posix_memalign\n"); 173 int *pm; 174 int pm_res = posix_memalign((void**)&pm, kPageSize, kPageSize); 175 EXPECT_EQ(0, pm_res); 176 free(pm); 177#endif 178 179#if !defined(__APPLE__) 180 int *ma = (int*)memalign(kPageSize, kPageSize); 181 EXPECT_EQ(0, (uintptr_t)ma % kPageSize); 182 ma[123] = 0; 183 free(ma); 184#endif // __APPLE__ 185} 186 187TEST(AddressSanitizer, CallocTest) { 188 int *a = (int*)calloc(100, sizeof(int)); 189 EXPECT_EQ(0, a[10]); 190 free(a); 191} 192 193TEST(AddressSanitizer, VallocTest) { 194 void *a = valloc(100); 195 EXPECT_EQ(0, (uintptr_t)a % kPageSize); 196 free(a); 197} 198 199#ifndef __APPLE__ 200TEST(AddressSanitizer, PvallocTest) { 201 char *a = (char*)pvalloc(kPageSize + 100); 202 EXPECT_EQ(0, (uintptr_t)a % kPageSize); 203 a[kPageSize + 101] = 1; // we should not report an error here. 204 free(a); 205 206 a = (char*)pvalloc(0); // pvalloc(0) should allocate at least one page. 207 EXPECT_EQ(0, (uintptr_t)a % kPageSize); 208 a[101] = 1; // we should not report an error here. 209 free(a); 210} 211#endif // __APPLE__ 212 213void NoOpSignalHandler(int unused) { 214 fprintf(stderr, "NoOpSignalHandler (should not happen). Aborting\n"); 215 abort(); 216} 217 218void NoOpSigaction(int, siginfo_t *siginfo, void *context) { 219 fprintf(stderr, "NoOpSigaction (should not happen). Aborting\n"); 220 abort(); 221} 222 223TEST(AddressSanitizer, SignalTest) { 224 signal(SIGSEGV, NoOpSignalHandler); 225 signal(SIGILL, NoOpSignalHandler); 226 // If asan did not intercept sigaction NoOpSigaction will fire. 227 char *x = Ident((char*)malloc(5)); 228 EXPECT_DEATH(x[6]++, "is located 1 bytes to the right"); 229 free(Ident(x)); 230} 231 232TEST(AddressSanitizer, SigactionTest) { 233 { 234 struct sigaction sigact; 235 memset(&sigact, 0, sizeof(sigact)); 236 sigact.sa_sigaction = NoOpSigaction;; 237 sigact.sa_flags = SA_SIGINFO; 238 sigaction(SIGSEGV, &sigact, 0); 239 } 240 241 { 242 struct sigaction sigact; 243 memset(&sigact, 0, sizeof(sigact)); 244 sigact.sa_sigaction = NoOpSigaction;; 245 sigact.sa_flags = SA_SIGINFO; 246 sigaction(SIGILL, &sigact, 0); 247 } 248 249 // If asan did not intercept sigaction NoOpSigaction will fire. 250 char *x = Ident((char*)malloc(5)); 251 EXPECT_DEATH(x[6]++, "is located 1 bytes to the right"); 252 free(Ident(x)); 253} 254 255void *TSDWorker(void *test_key) { 256 if (test_key) { 257 pthread_setspecific(*(pthread_key_t*)test_key, (void*)0xfeedface); 258 } 259 return NULL; 260} 261 262void TSDDestructor(void *tsd) { 263 // Spawning a thread will check that the current thread id is not -1. 264 pthread_t th; 265 pthread_create(&th, NULL, TSDWorker, NULL); 266 pthread_join(th, NULL); 267} 268 269// This tests triggers the thread-specific data destruction fiasco which occurs 270// if we don't manage the TSD destructors ourselves. We create a new pthread 271// key with a non-NULL destructor which is likely to be put after the destructor 272// of AsanThread in the list of destructors. 273// In this case the TSD for AsanThread will be destroyed before TSDDestructor 274// is called for the child thread, and a CHECK will fail when we call 275// pthread_create() to spawn the grandchild. 276TEST(AddressSanitizer, DISABLED_TSDTest) { 277 pthread_t th; 278 pthread_key_t test_key; 279 pthread_key_create(&test_key, TSDDestructor); 280 pthread_create(&th, NULL, TSDWorker, &test_key); 281 pthread_join(th, NULL); 282 pthread_key_delete(test_key); 283} 284 285template<class T> 286void OOBTest() { 287 char expected_str[100]; 288 for (int size = sizeof(T); size < 20; size += 5) { 289 for (int i = -5; i < 0; i++) { 290 const char *str = 291 "is located.*%d byte.*to the left"; 292 sprintf(expected_str, str, abs(i)); 293 EXPECT_DEATH(oob_test<T>(size, i), expected_str); 294 } 295 296 for (int i = 0; i < size - sizeof(T) + 1; i++) 297 oob_test<T>(size, i); 298 299 for (int i = size - sizeof(T) + 1; i <= size + 3 * sizeof(T); i++) { 300 const char *str = 301 "is located.*%d byte.*to the right"; 302 int off = i >= size ? (i - size) : 0; 303 // we don't catch unaligned partially OOB accesses. 304 if (i % sizeof(T)) continue; 305 sprintf(expected_str, str, off); 306 EXPECT_DEATH(oob_test<T>(size, i), expected_str); 307 } 308 } 309 310 EXPECT_DEATH(oob_test<T>(kLargeMalloc, -1), 311 "is located.*1 byte.*to the left"); 312 EXPECT_DEATH(oob_test<T>(kLargeMalloc, kLargeMalloc), 313 "is located.*0 byte.*to the right"); 314} 315 316// TODO(glider): the following tests are EXTREMELY slow on Darwin: 317// AddressSanitizer.OOB_char (125503 ms) 318// AddressSanitizer.OOB_int (126890 ms) 319// AddressSanitizer.OOBRightTest (315605 ms) 320// AddressSanitizer.SimpleStackTest (366559 ms) 321 322TEST(AddressSanitizer, OOB_char) { 323 OOBTest<U1>(); 324} 325 326TEST(AddressSanitizer, OOB_int) { 327 OOBTest<U4>(); 328} 329 330TEST(AddressSanitizer, OOBRightTest) { 331 for (size_t access_size = 1; access_size <= 8; access_size *= 2) { 332 for (size_t alloc_size = 1; alloc_size <= 8; alloc_size++) { 333 for (size_t offset = 0; offset <= 8; offset += access_size) { 334 void *p = malloc(alloc_size); 335 // allocated: [p, p + alloc_size) 336 // accessed: [p + offset, p + offset + access_size) 337 uint8_t *addr = (uint8_t*)p + offset; 338 if (offset + access_size <= alloc_size) { 339 asan_write_sized_aligned(addr, access_size); 340 } else { 341 int outside_bytes = offset > alloc_size ? (offset - alloc_size) : 0; 342 const char *str = 343 "is located.%d *byte.*to the right"; 344 char expected_str[100]; 345 sprintf(expected_str, str, outside_bytes); 346 EXPECT_DEATH(asan_write_sized_aligned(addr, access_size), 347 expected_str); 348 } 349 free(p); 350 } 351 } 352 } 353} 354 355TEST(AddressSanitizer, UAF_char) { 356 const char *uaf_string = "AddressSanitizer.*heap-use-after-free"; 357 EXPECT_DEATH(uaf_test<U1>(1, 0), uaf_string); 358 EXPECT_DEATH(uaf_test<U1>(10, 0), uaf_string); 359 EXPECT_DEATH(uaf_test<U1>(10, 10), uaf_string); 360 EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, 0), uaf_string); 361 EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, kLargeMalloc / 2), uaf_string); 362} 363 364#if ASAN_HAS_BLACKLIST 365TEST(AddressSanitizer, IgnoreTest) { 366 int *x = Ident(new int); 367 delete Ident(x); 368 *x = 0; 369} 370#endif // ASAN_HAS_BLACKLIST 371 372struct StructWithBitField { 373 int bf1:1; 374 int bf2:1; 375 int bf3:1; 376 int bf4:29; 377}; 378 379TEST(AddressSanitizer, BitFieldPositiveTest) { 380 StructWithBitField *x = new StructWithBitField; 381 delete Ident(x); 382 EXPECT_DEATH(x->bf1 = 0, "use-after-free"); 383 EXPECT_DEATH(x->bf2 = 0, "use-after-free"); 384 EXPECT_DEATH(x->bf3 = 0, "use-after-free"); 385 EXPECT_DEATH(x->bf4 = 0, "use-after-free"); 386}; 387 388struct StructWithBitFields_8_24 { 389 int a:8; 390 int b:24; 391}; 392 393TEST(AddressSanitizer, BitFieldNegativeTest) { 394 StructWithBitFields_8_24 *x = Ident(new StructWithBitFields_8_24); 395 x->a = 0; 396 x->b = 0; 397 delete Ident(x); 398} 399 400TEST(AddressSanitizer, OutOfMemoryTest) { 401 size_t size = __WORDSIZE == 64 ? (size_t)(1ULL << 48) : (0xf0000000); 402 EXPECT_EQ(0, realloc(0, size)); 403 EXPECT_EQ(0, realloc(0, ~Ident(0))); 404 EXPECT_EQ(0, malloc(size)); 405 EXPECT_EQ(0, malloc(~Ident(0))); 406 EXPECT_EQ(0, calloc(1, size)); 407 EXPECT_EQ(0, calloc(1, ~Ident(0))); 408} 409 410#if ASAN_NEEDS_SEGV 411TEST(AddressSanitizer, WildAddressTest) { 412 char *c = (char*)0x123; 413 EXPECT_DEATH(*c = 0, "AddressSanitizer crashed on unknown address"); 414} 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 Darwin. 469 // (the libSystem malloc() allows allocating up to 2300 megabytes without 470 // ASan). 471 size_t n_megs = __WORDSIZE == 32 ? 1200 : 4100; 472#else 473 size_t n_megs = __WORDSIZE == 32 ? 2600 : 4100; 474#endif 475 TestLargeMalloc(n_megs << 20); 476} 477#endif 478 479TEST(AddressSanitizer, ThreadedMallocStressTest) { 480 const int kNumThreads = 4; 481 const int kNumIterations = (ASAN_LOW_MEMORY) ? 10000 : 100000; 482 pthread_t t[kNumThreads]; 483 for (int i = 0; i < kNumThreads; i++) { 484 pthread_create(&t[i], 0, (void* (*)(void *x))MallocStress, 485 (void*)kNumIterations); 486 } 487 for (int i = 0; i < kNumThreads; i++) { 488 pthread_join(t[i], 0); 489 } 490} 491 492void *ManyThreadsWorker(void *a) { 493 for (int iter = 0; iter < 100; iter++) { 494 for (size_t size = 100; size < 2000; size *= 2) { 495 free(Ident(malloc(size))); 496 } 497 } 498 return 0; 499} 500 501TEST(AddressSanitizer, ManyThreadsTest) { 502 const size_t kNumThreads = __WORDSIZE == 32 ? 30 : 1000; 503 pthread_t t[kNumThreads]; 504 for (size_t i = 0; i < kNumThreads; i++) { 505 pthread_create(&t[i], 0, (void* (*)(void *x))ManyThreadsWorker, (void*)i); 506 } 507 for (size_t i = 0; i < kNumThreads; i++) { 508 pthread_join(t[i], 0); 509 } 510} 511 512TEST(AddressSanitizer, ReallocTest) { 513 const int kMinElem = 5; 514 int *ptr = (int*)malloc(sizeof(int) * kMinElem); 515 ptr[3] = 3; 516 for (int i = 0; i < 10000; i++) { 517 ptr = (int*)realloc(ptr, 518 (my_rand(&global_seed) % 1000 + kMinElem) * sizeof(int)); 519 EXPECT_EQ(3, ptr[3]); 520 } 521} 522 523#ifndef __APPLE__ 524static const char *kMallocUsableSizeErrorMsg = 525 "AddressSanitizer attempting to call malloc_usable_size()"; 526 527TEST(AddressSanitizer, MallocUsableSizeTest) { 528 const size_t kArraySize = 100; 529 char *array = Ident((char*)malloc(kArraySize)); 530 int *int_ptr = Ident(new int); 531 EXPECT_EQ(0, malloc_usable_size(NULL)); 532 EXPECT_EQ(kArraySize, malloc_usable_size(array)); 533 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); 534 EXPECT_DEATH(malloc_usable_size((void*)0x123), kMallocUsableSizeErrorMsg); 535 EXPECT_DEATH(malloc_usable_size(array + kArraySize / 2), 536 kMallocUsableSizeErrorMsg); 537 free(array); 538 EXPECT_DEATH(malloc_usable_size(array), kMallocUsableSizeErrorMsg); 539} 540#endif 541 542void WrongFree() { 543 int *x = (int*)malloc(100 * sizeof(int)); 544 // Use the allocated memory, otherwise Clang will optimize it out. 545 Ident(x); 546 free(x + 1); 547} 548 549TEST(AddressSanitizer, WrongFreeTest) { 550 EXPECT_DEATH(WrongFree(), 551 "ERROR: AddressSanitizer attempting free.*not malloc"); 552} 553 554void DoubleFree() { 555 int *x = (int*)malloc(100 * sizeof(int)); 556 fprintf(stderr, "DoubleFree: x=%p\n", x); 557 free(x); 558 free(x); 559 fprintf(stderr, "should have failed in the second free(%p)\n", x); 560 abort(); 561} 562 563TEST(AddressSanitizer, DoubleFreeTest) { 564 EXPECT_DEATH(DoubleFree(), ASAN_PCRE_DOTALL 565 "ERROR: AddressSanitizer attempting double-free" 566 ".*is located 0 bytes inside of 400-byte region" 567 ".*freed by thread T0 here" 568 ".*previously allocated by thread T0 here"); 569} 570 571template<int kSize> 572NOINLINE void SizedStackTest() { 573 char a[kSize]; 574 char *A = Ident((char*)&a); 575 for (size_t i = 0; i < kSize; i++) 576 A[i] = i; 577 EXPECT_DEATH(A[-1] = 0, ""); 578 EXPECT_DEATH(A[-20] = 0, ""); 579 EXPECT_DEATH(A[-31] = 0, ""); 580 EXPECT_DEATH(A[kSize] = 0, ""); 581 EXPECT_DEATH(A[kSize + 1] = 0, ""); 582 EXPECT_DEATH(A[kSize + 10] = 0, ""); 583 EXPECT_DEATH(A[kSize + 31] = 0, ""); 584} 585 586TEST(AddressSanitizer, SimpleStackTest) { 587 SizedStackTest<1>(); 588 SizedStackTest<2>(); 589 SizedStackTest<3>(); 590 SizedStackTest<4>(); 591 SizedStackTest<5>(); 592 SizedStackTest<6>(); 593 SizedStackTest<7>(); 594 SizedStackTest<16>(); 595 SizedStackTest<25>(); 596 SizedStackTest<34>(); 597 SizedStackTest<43>(); 598 SizedStackTest<51>(); 599 SizedStackTest<62>(); 600 SizedStackTest<64>(); 601 SizedStackTest<128>(); 602} 603 604TEST(AddressSanitizer, ManyStackObjectsTest) { 605 char XXX[10]; 606 char YYY[20]; 607 char ZZZ[30]; 608 Ident(XXX); 609 Ident(YYY); 610 EXPECT_DEATH(Ident(ZZZ)[-1] = 0, ASAN_PCRE_DOTALL "XXX.*YYY.*ZZZ"); 611} 612 613NOINLINE static void Frame0(int frame, char *a, char *b, char *c) { 614 char d[4] = {0}; 615 char *D = Ident(d); 616 switch (frame) { 617 case 3: a[5]++; break; 618 case 2: b[5]++; break; 619 case 1: c[5]++; break; 620 case 0: D[5]++; break; 621 } 622} 623NOINLINE static void Frame1(int frame, char *a, char *b) { 624 char c[4] = {0}; Frame0(frame, a, b, c); 625 break_optimization(0); 626} 627NOINLINE static void Frame2(int frame, char *a) { 628 char b[4] = {0}; Frame1(frame, a, b); 629 break_optimization(0); 630} 631NOINLINE static void Frame3(int frame) { 632 char a[4] = {0}; Frame2(frame, a); 633 break_optimization(0); 634} 635 636TEST(AddressSanitizer, GuiltyStackFrame0Test) { 637 EXPECT_DEATH(Frame3(0), "located .*in frame <.*Frame0"); 638} 639TEST(AddressSanitizer, GuiltyStackFrame1Test) { 640 EXPECT_DEATH(Frame3(1), "located .*in frame <.*Frame1"); 641} 642TEST(AddressSanitizer, GuiltyStackFrame2Test) { 643 EXPECT_DEATH(Frame3(2), "located .*in frame <.*Frame2"); 644} 645TEST(AddressSanitizer, GuiltyStackFrame3Test) { 646 EXPECT_DEATH(Frame3(3), "located .*in frame <.*Frame3"); 647} 648 649NOINLINE void LongJmpFunc1(jmp_buf buf) { 650 // create three red zones for these two stack objects. 651 int a; 652 int b; 653 654 int *A = Ident(&a); 655 int *B = Ident(&b); 656 *A = *B; 657 longjmp(buf, 1); 658} 659 660NOINLINE void UnderscopeLongJmpFunc1(jmp_buf buf) { 661 // create three red zones for these two stack objects. 662 int a; 663 int b; 664 665 int *A = Ident(&a); 666 int *B = Ident(&b); 667 *A = *B; 668 _longjmp(buf, 1); 669} 670 671NOINLINE void SigLongJmpFunc1(sigjmp_buf buf) { 672 // create three red zones for these two stack objects. 673 int a; 674 int b; 675 676 int *A = Ident(&a); 677 int *B = Ident(&b); 678 *A = *B; 679 siglongjmp(buf, 1); 680} 681 682 683NOINLINE void TouchStackFunc() { 684 int a[100]; // long array will intersect with redzones from LongJmpFunc1. 685 int *A = Ident(a); 686 for (int i = 0; i < 100; i++) 687 A[i] = i*i; 688} 689 690// Test that we handle longjmp and do not report fals positives on stack. 691TEST(AddressSanitizer, LongJmpTest) { 692 static jmp_buf buf; 693 if (!setjmp(buf)) { 694 LongJmpFunc1(buf); 695 } else { 696 TouchStackFunc(); 697 } 698} 699 700TEST(AddressSanitizer, UnderscopeLongJmpTest) { 701 static jmp_buf buf; 702 if (!_setjmp(buf)) { 703 UnderscopeLongJmpFunc1(buf); 704 } else { 705 TouchStackFunc(); 706 } 707} 708 709TEST(AddressSanitizer, SigLongJmpTest) { 710 static sigjmp_buf buf; 711 if (!sigsetjmp(buf, 1)) { 712 SigLongJmpFunc1(buf); 713 } else { 714 TouchStackFunc(); 715 } 716} 717 718#ifdef __EXCEPTIONS 719NOINLINE void ThrowFunc() { 720 // create three red zones for these two stack objects. 721 int a; 722 int b; 723 724 int *A = Ident(&a); 725 int *B = Ident(&b); 726 *A = *B; 727 ASAN_THROW(1); 728} 729 730TEST(AddressSanitizer, CxxExceptionTest) { 731 if (ASAN_UAR) return; 732 // TODO(kcc): this test crashes on 32-bit for some reason... 733 if (__WORDSIZE == 32) return; 734 try { 735 ThrowFunc(); 736 } catch(...) {} 737 TouchStackFunc(); 738} 739#endif 740 741void *ThreadStackReuseFunc1(void *unused) { 742 // create three red zones for these two stack objects. 743 int a; 744 int b; 745 746 int *A = Ident(&a); 747 int *B = Ident(&b); 748 *A = *B; 749 pthread_exit(0); 750 return 0; 751} 752 753void *ThreadStackReuseFunc2(void *unused) { 754 TouchStackFunc(); 755 return 0; 756} 757 758TEST(AddressSanitizer, ThreadStackReuseTest) { 759 pthread_t t; 760 pthread_create(&t, 0, ThreadStackReuseFunc1, 0); 761 pthread_join(t, 0); 762 pthread_create(&t, 0, ThreadStackReuseFunc2, 0); 763 pthread_join(t, 0); 764} 765 766#if defined(__i386__) || defined(__x86_64__) 767TEST(AddressSanitizer, Store128Test) { 768 char *a = Ident((char*)malloc(Ident(12))); 769 char *p = a; 770 if (((uintptr_t)a % 16) != 0) 771 p = a + 8; 772 assert(((uintptr_t)p % 16) == 0); 773 __m128i value_wide = _mm_set1_epi16(0x1234); 774 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 775 "AddressSanitizer heap-buffer-overflow"); 776 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 777 "WRITE of size 16"); 778 EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide), 779 "located 0 bytes to the right of 12-byte"); 780 free(a); 781} 782#endif 783 784static string RightOOBErrorMessage(int oob_distance) { 785 assert(oob_distance >= 0); 786 char expected_str[100]; 787 sprintf(expected_str, "located %d bytes to the right", oob_distance); 788 return string(expected_str); 789} 790 791static string LeftOOBErrorMessage(int oob_distance) { 792 assert(oob_distance > 0); 793 char expected_str[100]; 794 sprintf(expected_str, "located %d bytes to the left", oob_distance); 795 return string(expected_str); 796} 797 798template<class T> 799void MemSetOOBTestTemplate(size_t length) { 800 if (length == 0) return; 801 size_t size = Ident(sizeof(T) * length); 802 T *array = Ident((T*)malloc(size)); 803 int element = Ident(42); 804 int zero = Ident(0); 805 // memset interval inside array 806 memset(array, element, size); 807 memset(array, element, size - 1); 808 memset(array + length - 1, element, sizeof(T)); 809 memset(array, element, 1); 810 811 // memset 0 bytes 812 memset(array - 10, element, zero); 813 memset(array - 1, element, zero); 814 memset(array, element, zero); 815 memset(array + length, 0, zero); 816 memset(array + length + 1, 0, zero); 817 818 // try to memset bytes to the right of array 819 EXPECT_DEATH(memset(array, 0, size + 1), 820 RightOOBErrorMessage(0)); 821 EXPECT_DEATH(memset((char*)(array + length) - 1, element, 6), 822 RightOOBErrorMessage(4)); 823 EXPECT_DEATH(memset(array + 1, element, size + sizeof(T)), 824 RightOOBErrorMessage(2 * sizeof(T) - 1)); 825 // whole interval is to the right 826 EXPECT_DEATH(memset(array + length + 1, 0, 10), 827 RightOOBErrorMessage(sizeof(T))); 828 829 // try to memset bytes to the left of array 830 EXPECT_DEATH(memset((char*)array - 1, element, size), 831 LeftOOBErrorMessage(1)); 832 EXPECT_DEATH(memset((char*)array - 5, 0, 6), 833 LeftOOBErrorMessage(5)); 834 EXPECT_DEATH(memset(array - 5, element, size + 5 * sizeof(T)), 835 LeftOOBErrorMessage(5 * sizeof(T))); 836 // whole interval is to the left 837 EXPECT_DEATH(memset(array - 2, 0, sizeof(T)), 838 LeftOOBErrorMessage(2 * sizeof(T))); 839 840 // try to memset bytes both to the left & to the right 841 EXPECT_DEATH(memset((char*)array - 2, element, size + 4), 842 LeftOOBErrorMessage(2)); 843 844 free(array); 845} 846 847TEST(AddressSanitizer, MemSetOOBTest) { 848 MemSetOOBTestTemplate<char>(100); 849 MemSetOOBTestTemplate<int>(5); 850 MemSetOOBTestTemplate<double>(256); 851 // We can test arrays of structres/classes here, but what for? 852} 853 854// Same test for memcpy and memmove functions 855template <class T, class M> 856void MemTransferOOBTestTemplate(size_t length) { 857 if (length == 0) return; 858 size_t size = Ident(sizeof(T) * length); 859 T *src = Ident((T*)malloc(size)); 860 T *dest = Ident((T*)malloc(size)); 861 int zero = Ident(0); 862 863 // valid transfer of bytes between arrays 864 M::transfer(dest, src, size); 865 M::transfer(dest + 1, src, size - sizeof(T)); 866 M::transfer(dest, src + length - 1, sizeof(T)); 867 M::transfer(dest, src, 1); 868 869 // transfer zero bytes 870 M::transfer(dest - 1, src, 0); 871 M::transfer(dest + length, src, zero); 872 M::transfer(dest, src - 1, zero); 873 M::transfer(dest, src, zero); 874 875 // try to change mem to the right of dest 876 EXPECT_DEATH(M::transfer(dest + 1, src, size), 877 RightOOBErrorMessage(sizeof(T) - 1)); 878 EXPECT_DEATH(M::transfer((char*)(dest + length) - 1, src, 5), 879 RightOOBErrorMessage(3)); 880 881 // try to change mem to the left of dest 882 EXPECT_DEATH(M::transfer(dest - 2, src, size), 883 LeftOOBErrorMessage(2 * sizeof(T))); 884 EXPECT_DEATH(M::transfer((char*)dest - 3, src, 4), 885 LeftOOBErrorMessage(3)); 886 887 // try to access mem to the right of src 888 EXPECT_DEATH(M::transfer(dest, src + 2, size), 889 RightOOBErrorMessage(2 * sizeof(T) - 1)); 890 EXPECT_DEATH(M::transfer(dest, (char*)(src + length) - 3, 6), 891 RightOOBErrorMessage(2)); 892 893 // try to access mem to the left of src 894 EXPECT_DEATH(M::transfer(dest, src - 1, size), 895 LeftOOBErrorMessage(sizeof(T))); 896 EXPECT_DEATH(M::transfer(dest, (char*)src - 6, 7), 897 LeftOOBErrorMessage(6)); 898 899 // Generally we don't need to test cases where both accessing src and writing 900 // to dest address to poisoned memory. 901 902 T *big_src = Ident((T*)malloc(size * 2)); 903 T *big_dest = Ident((T*)malloc(size * 2)); 904 // try to change mem to both sides of dest 905 EXPECT_DEATH(M::transfer(dest - 1, big_src, size * 2), 906 LeftOOBErrorMessage(sizeof(T))); 907 // try to access mem to both sides of src 908 EXPECT_DEATH(M::transfer(big_dest, src - 2, size * 2), 909 LeftOOBErrorMessage(2 * sizeof(T))); 910 911 free(src); 912 free(dest); 913 free(big_src); 914 free(big_dest); 915} 916 917class MemCpyWrapper { 918 public: 919 static void* transfer(void *to, const void *from, size_t size) { 920 return memcpy(to, from, size); 921 } 922}; 923TEST(AddressSanitizer, MemCpyOOBTest) { 924 MemTransferOOBTestTemplate<char, MemCpyWrapper>(100); 925 MemTransferOOBTestTemplate<int, MemCpyWrapper>(1024); 926} 927 928class MemMoveWrapper { 929 public: 930 static void* transfer(void *to, const void *from, size_t size) { 931 return memmove(to, from, size); 932 } 933}; 934TEST(AddressSanitizer, MemMoveOOBTest) { 935 MemTransferOOBTestTemplate<char, MemMoveWrapper>(100); 936 MemTransferOOBTestTemplate<int, MemMoveWrapper>(1024); 937} 938 939// Tests for string functions 940 941// Used for string functions tests 942static char global_string[] = "global"; 943static size_t global_string_length = 6; 944 945// Input to a test is a zero-terminated string str with given length 946// Accesses to the bytes to the left and to the right of str 947// are presumed to produce OOB errors 948void StrLenOOBTestTemplate(char *str, size_t length, bool is_global) { 949 // Normal strlen calls 950 EXPECT_EQ(strlen(str), length); 951 if (length > 0) { 952 EXPECT_EQ(strlen(str + 1), length - 1); 953 EXPECT_EQ(strlen(str + length), 0); 954 } 955 // Arg of strlen is not malloced, OOB access 956 if (!is_global) { 957 // We don't insert RedZones to the left of global variables 958 EXPECT_DEATH(Ident(strlen(str - 1)), LeftOOBErrorMessage(1)); 959 EXPECT_DEATH(Ident(strlen(str - 5)), LeftOOBErrorMessage(5)); 960 } 961 EXPECT_DEATH(Ident(strlen(str + length + 1)), RightOOBErrorMessage(0)); 962 // Overwrite terminator 963 str[length] = 'a'; 964 // String is not zero-terminated, strlen will lead to OOB access 965 EXPECT_DEATH(Ident(strlen(str)), RightOOBErrorMessage(0)); 966 EXPECT_DEATH(Ident(strlen(str + length)), RightOOBErrorMessage(0)); 967 // Restore terminator 968 str[length] = 0; 969} 970TEST(AddressSanitizer, StrLenOOBTest) { 971 // Check heap-allocated string 972 size_t length = Ident(10); 973 char *heap_string = Ident((char*)malloc(length + 1)); 974 char stack_string[10 + 1]; 975 for (int i = 0; i < length; i++) { 976 heap_string[i] = 'a'; 977 stack_string[i] = 'b'; 978 } 979 heap_string[length] = 0; 980 stack_string[length] = 0; 981 StrLenOOBTestTemplate(heap_string, length, false); 982 // TODO(samsonov): Fix expected messages in StrLenOOBTestTemplate to 983 // make test for stack_string work. Or move it to output tests. 984 // StrLenOOBTestTemplate(stack_string, length, false); 985 StrLenOOBTestTemplate(global_string, global_string_length, true); 986 free(heap_string); 987} 988 989static inline char* MallocAndMemsetString(size_t size) { 990 char *s = Ident((char*)malloc(size)); 991 memset(s, 'z', size); 992 return s; 993} 994 995#ifndef __APPLE__ 996TEST(AddressSanitizer, StrNLenOOBTest) { 997 size_t size = Ident(123); 998 char *str = MallocAndMemsetString(size); 999 // Normal strnlen calls. 1000 Ident(strnlen(str - 1, 0)); 1001 Ident(strnlen(str, size)); 1002 Ident(strnlen(str + size - 1, 1)); 1003 str[size - 1] = '\0'; 1004 Ident(strnlen(str, 2 * size)); 1005 // Argument points to not allocated memory. 1006 EXPECT_DEATH(Ident(strnlen(str - 1, 1)), LeftOOBErrorMessage(1)); 1007 EXPECT_DEATH(Ident(strnlen(str + size, 1)), RightOOBErrorMessage(0)); 1008 // Overwrite the terminating '\0' and hit unallocated memory. 1009 str[size - 1] = 'z'; 1010 EXPECT_DEATH(Ident(strnlen(str, size + 1)), RightOOBErrorMessage(0)); 1011 free(str); 1012} 1013#endif 1014 1015TEST(AddressSanitizer, StrDupOOBTest) { 1016 size_t size = Ident(42); 1017 char *str = MallocAndMemsetString(size); 1018 char *new_str; 1019 // Normal strdup calls. 1020 str[size - 1] = '\0'; 1021 new_str = strdup(str); 1022 free(new_str); 1023 new_str = strdup(str + size - 1); 1024 free(new_str); 1025 // Argument points to not allocated memory. 1026 EXPECT_DEATH(Ident(strdup(str - 1)), LeftOOBErrorMessage(1)); 1027 EXPECT_DEATH(Ident(strdup(str + size)), RightOOBErrorMessage(0)); 1028 // Overwrite the terminating '\0' and hit unallocated memory. 1029 str[size - 1] = 'z'; 1030 EXPECT_DEATH(Ident(strdup(str)), RightOOBErrorMessage(0)); 1031 free(str); 1032} 1033 1034TEST(AddressSanitizer, StrCpyOOBTest) { 1035 size_t to_size = Ident(30); 1036 size_t from_size = Ident(6); // less than to_size 1037 char *to = Ident((char*)malloc(to_size)); 1038 char *from = Ident((char*)malloc(from_size)); 1039 // Normal strcpy calls. 1040 strcpy(from, "hello"); 1041 strcpy(to, from); 1042 strcpy(to + to_size - from_size, from); 1043 // Length of "from" is too small. 1044 EXPECT_DEATH(Ident(strcpy(from, "hello2")), RightOOBErrorMessage(0)); 1045 // "to" or "from" points to not allocated memory. 1046 EXPECT_DEATH(Ident(strcpy(to - 1, from)), LeftOOBErrorMessage(1)); 1047 EXPECT_DEATH(Ident(strcpy(to, from - 1)), LeftOOBErrorMessage(1)); 1048 EXPECT_DEATH(Ident(strcpy(to, from + from_size)), RightOOBErrorMessage(0)); 1049 EXPECT_DEATH(Ident(strcpy(to + to_size, from)), RightOOBErrorMessage(0)); 1050 // Overwrite the terminating '\0' character and hit unallocated memory. 1051 from[from_size - 1] = '!'; 1052 EXPECT_DEATH(Ident(strcpy(to, from)), RightOOBErrorMessage(0)); 1053 free(to); 1054 free(from); 1055} 1056 1057TEST(AddressSanitizer, StrNCpyOOBTest) { 1058 size_t to_size = Ident(20); 1059 size_t from_size = Ident(6); // less than to_size 1060 char *to = Ident((char*)malloc(to_size)); 1061 // From is a zero-terminated string "hello\0" of length 6 1062 char *from = Ident((char*)malloc(from_size)); 1063 strcpy(from, "hello"); 1064 // copy 0 bytes 1065 strncpy(to, from, 0); 1066 strncpy(to - 1, from - 1, 0); 1067 // normal strncpy calls 1068 strncpy(to, from, from_size); 1069 strncpy(to, from, to_size); 1070 strncpy(to, from + from_size - 1, to_size); 1071 strncpy(to + to_size - 1, from, 1); 1072 // One of {to, from} points to not allocated memory 1073 EXPECT_DEATH(Ident(strncpy(to, from - 1, from_size)), 1074 LeftOOBErrorMessage(1)); 1075 EXPECT_DEATH(Ident(strncpy(to - 1, from, from_size)), 1076 LeftOOBErrorMessage(1)); 1077 EXPECT_DEATH(Ident(strncpy(to, from + from_size, 1)), 1078 RightOOBErrorMessage(0)); 1079 EXPECT_DEATH(Ident(strncpy(to + to_size, from, 1)), 1080 RightOOBErrorMessage(0)); 1081 // Length of "to" is too small 1082 EXPECT_DEATH(Ident(strncpy(to + to_size - from_size + 1, from, from_size)), 1083 RightOOBErrorMessage(0)); 1084 EXPECT_DEATH(Ident(strncpy(to + 1, from, to_size)), 1085 RightOOBErrorMessage(0)); 1086 // Overwrite terminator in from 1087 from[from_size - 1] = '!'; 1088 // normal strncpy call 1089 strncpy(to, from, from_size); 1090 // Length of "from" is too small 1091 EXPECT_DEATH(Ident(strncpy(to, from, to_size)), 1092 RightOOBErrorMessage(0)); 1093 free(to); 1094 free(from); 1095} 1096 1097typedef char*(*PointerToStrChr)(const char*, int); 1098void RunStrChrTest(PointerToStrChr StrChr) { 1099 size_t size = Ident(100); 1100 char *str = MallocAndMemsetString(size); 1101 str[10] = 'q'; 1102 str[11] = '\0'; 1103 EXPECT_EQ(str, StrChr(str, 'z')); 1104 EXPECT_EQ(str + 10, StrChr(str, 'q')); 1105 EXPECT_EQ(NULL, StrChr(str, 'a')); 1106 // StrChr argument points to not allocated memory. 1107 EXPECT_DEATH(Ident(StrChr(str - 1, 'z')), LeftOOBErrorMessage(1)); 1108 EXPECT_DEATH(Ident(StrChr(str + size, 'z')), RightOOBErrorMessage(0)); 1109 // Overwrite the terminator and hit not allocated memory. 1110 str[11] = 'z'; 1111 EXPECT_DEATH(Ident(StrChr(str, 'a')), RightOOBErrorMessage(0)); 1112 free(str); 1113} 1114TEST(AddressSanitizer, StrChrAndIndexOOBTest) { 1115 RunStrChrTest(&strchr); 1116 RunStrChrTest(&index); 1117} 1118 1119TEST(AddressSanitizer, StrCmpAndFriendsLogicTest) { 1120 // strcmp 1121 EXPECT_EQ(0, strcmp("", "")); 1122 EXPECT_EQ(0, strcmp("abcd", "abcd")); 1123 EXPECT_GT(0, strcmp("ab", "ac")); 1124 EXPECT_GT(0, strcmp("abc", "abcd")); 1125 EXPECT_LT(0, strcmp("acc", "abc")); 1126 EXPECT_LT(0, strcmp("abcd", "abc")); 1127 1128 // strncmp 1129 EXPECT_EQ(0, strncmp("a", "b", 0)); 1130 EXPECT_EQ(0, strncmp("abcd", "abcd", 10)); 1131 EXPECT_EQ(0, strncmp("abcd", "abcef", 3)); 1132 EXPECT_GT(0, strncmp("abcde", "abcfa", 4)); 1133 EXPECT_GT(0, strncmp("a", "b", 5)); 1134 EXPECT_GT(0, strncmp("bc", "bcde", 4)); 1135 EXPECT_LT(0, strncmp("xyz", "xyy", 10)); 1136 EXPECT_LT(0, strncmp("baa", "aaa", 1)); 1137 EXPECT_LT(0, strncmp("zyx", "", 2)); 1138 1139 // strcasecmp 1140 EXPECT_EQ(0, strcasecmp("", "")); 1141 EXPECT_EQ(0, strcasecmp("zzz", "zzz")); 1142 EXPECT_EQ(0, strcasecmp("abCD", "ABcd")); 1143 EXPECT_GT(0, strcasecmp("aB", "Ac")); 1144 EXPECT_GT(0, strcasecmp("ABC", "ABCd")); 1145 EXPECT_LT(0, strcasecmp("acc", "abc")); 1146 EXPECT_LT(0, strcasecmp("ABCd", "abc")); 1147 1148 // strncasecmp 1149 EXPECT_EQ(0, strncasecmp("a", "b", 0)); 1150 EXPECT_EQ(0, strncasecmp("abCD", "ABcd", 10)); 1151 EXPECT_EQ(0, strncasecmp("abCd", "ABcef", 3)); 1152 EXPECT_GT(0, strncasecmp("abcde", "ABCfa", 4)); 1153 EXPECT_GT(0, strncasecmp("a", "B", 5)); 1154 EXPECT_GT(0, strncasecmp("bc", "BCde", 4)); 1155 EXPECT_LT(0, strncasecmp("xyz", "xyy", 10)); 1156 EXPECT_LT(0, strncasecmp("Baa", "aaa", 1)); 1157 EXPECT_LT(0, strncasecmp("zyx", "", 2)); 1158 1159 // memcmp 1160 EXPECT_EQ(0, memcmp("a", "b", 0)); 1161 EXPECT_EQ(0, memcmp("ab\0c", "ab\0c", 4)); 1162 EXPECT_GT(0, memcmp("\0ab", "\0ac", 3)); 1163 EXPECT_GT(0, memcmp("abb\0", "abba", 4)); 1164 EXPECT_LT(0, memcmp("ab\0cd", "ab\0c\0", 5)); 1165 EXPECT_LT(0, memcmp("zza", "zyx", 3)); 1166} 1167 1168typedef int(*PointerToStrCmp)(const char*, const char*); 1169void RunStrCmpTest(PointerToStrCmp StrCmp) { 1170 size_t size = Ident(100); 1171 char *s1 = MallocAndMemsetString(size); 1172 char *s2 = MallocAndMemsetString(size); 1173 s1[size - 1] = '\0'; 1174 s2[size - 1] = '\0'; 1175 // Normal StrCmp calls 1176 Ident(StrCmp(s1, s2)); 1177 Ident(StrCmp(s1, s2 + size - 1)); 1178 Ident(StrCmp(s1 + size - 1, s2 + size - 1)); 1179 s1[size - 1] = 'z'; 1180 s2[size - 1] = 'x'; 1181 Ident(StrCmp(s1, s2)); 1182 // One of arguments points to not allocated memory. 1183 EXPECT_DEATH(Ident(StrCmp)(s1 - 1, s2), LeftOOBErrorMessage(1)); 1184 EXPECT_DEATH(Ident(StrCmp)(s1, s2 - 1), LeftOOBErrorMessage(1)); 1185 EXPECT_DEATH(Ident(StrCmp)(s1 + size, s2), RightOOBErrorMessage(0)); 1186 EXPECT_DEATH(Ident(StrCmp)(s1, s2 + size), RightOOBErrorMessage(0)); 1187 // Hit unallocated memory and die. 1188 s2[size - 1] = 'z'; 1189 EXPECT_DEATH(Ident(StrCmp)(s1, s1), RightOOBErrorMessage(0)); 1190 EXPECT_DEATH(Ident(StrCmp)(s1 + size - 1, s2), RightOOBErrorMessage(0)); 1191 free(s1); 1192 free(s2); 1193} 1194 1195TEST(AddressSanitizer, StrCmpOOBTest) { 1196 RunStrCmpTest(&strcmp); 1197} 1198 1199TEST(AddressSanitizer, StrCaseCmpOOBTest) { 1200 RunStrCmpTest(&strcasecmp); 1201} 1202 1203typedef int(*PointerToStrNCmp)(const char*, const char*, size_t); 1204void RunStrNCmpTest(PointerToStrNCmp StrNCmp) { 1205 size_t size = Ident(100); 1206 char *s1 = MallocAndMemsetString(size); 1207 char *s2 = MallocAndMemsetString(size); 1208 s1[size - 1] = '\0'; 1209 s2[size - 1] = '\0'; 1210 // Normal StrNCmp calls 1211 Ident(StrNCmp(s1, s2, size + 2)); 1212 s1[size - 1] = 'z'; 1213 s2[size - 1] = 'x'; 1214 Ident(StrNCmp(s1 + size - 2, s2 + size - 2, size)); 1215 s2[size - 1] = 'z'; 1216 Ident(StrNCmp(s1 - 1, s2 - 1, 0)); 1217 Ident(StrNCmp(s1 + size - 1, s2 + size - 1, 1)); 1218 // One of arguments points to not allocated memory. 1219 EXPECT_DEATH(Ident(StrNCmp)(s1 - 1, s2, 1), LeftOOBErrorMessage(1)); 1220 EXPECT_DEATH(Ident(StrNCmp)(s1, s2 - 1, 1), LeftOOBErrorMessage(1)); 1221 EXPECT_DEATH(Ident(StrNCmp)(s1 + size, s2, 1), RightOOBErrorMessage(0)); 1222 EXPECT_DEATH(Ident(StrNCmp)(s1, s2 + size, 1), RightOOBErrorMessage(0)); 1223 // Hit unallocated memory and die. 1224 EXPECT_DEATH(Ident(StrNCmp)(s1 + 1, s2 + 1, size), RightOOBErrorMessage(0)); 1225 EXPECT_DEATH(Ident(StrNCmp)(s1 + size - 1, s2, 2), RightOOBErrorMessage(0)); 1226 free(s1); 1227 free(s2); 1228} 1229 1230TEST(AddressSanitizer, StrNCmpOOBTest) { 1231 RunStrNCmpTest(&strncmp); 1232} 1233 1234TEST(AddressSanitizer, StrNCaseCmpOOBTest) { 1235 RunStrNCmpTest(&strncasecmp); 1236} 1237 1238TEST(AddressSanitizer, MemCmpOOBTest) { 1239 size_t size = Ident(100); 1240 char *s1 = MallocAndMemsetString(size); 1241 char *s2 = MallocAndMemsetString(size); 1242 // Normal memcmp calls. 1243 Ident(memcmp(s1, s2, size)); 1244 Ident(memcmp(s1 + size - 1, s2 + size - 1, 1)); 1245 Ident(memcmp(s1 - 1, s2 - 1, 0)); 1246 // One of arguments points to not allocated memory. 1247 EXPECT_DEATH(Ident(memcmp)(s1 - 1, s2, 1), LeftOOBErrorMessage(1)); 1248 EXPECT_DEATH(Ident(memcmp)(s1, s2 - 1, 1), LeftOOBErrorMessage(1)); 1249 EXPECT_DEATH(Ident(memcmp)(s1 + size, s2, 1), RightOOBErrorMessage(0)); 1250 EXPECT_DEATH(Ident(memcmp)(s1, s2 + size, 1), RightOOBErrorMessage(0)); 1251 // Hit unallocated memory and die. 1252 EXPECT_DEATH(Ident(memcmp)(s1 + 1, s2 + 1, size), RightOOBErrorMessage(0)); 1253 EXPECT_DEATH(Ident(memcmp)(s1 + size - 1, s2, 2), RightOOBErrorMessage(0)); 1254 // Zero bytes are not terminators and don't prevent from OOB. 1255 s1[size - 1] = '\0'; 1256 s2[size - 1] = '\0'; 1257 EXPECT_DEATH(Ident(memcmp)(s1, s2, size + 1), RightOOBErrorMessage(0)); 1258 free(s1); 1259 free(s2); 1260} 1261 1262TEST(AddressSanitizer, StrCatOOBTest) { 1263 size_t to_size = Ident(100); 1264 char *to = MallocAndMemsetString(to_size); 1265 to[0] = '\0'; 1266 size_t from_size = Ident(20); 1267 char *from = MallocAndMemsetString(from_size); 1268 from[from_size - 1] = '\0'; 1269 // Normal strcat calls. 1270 strcat(to, from); 1271 strcat(to, from); 1272 strcat(to + from_size, from + from_size - 2); 1273 // Catenate empty string is not always an error. 1274 strcat(to - 1, from + from_size - 1); 1275 // One of arguments points to not allocated memory. 1276 EXPECT_DEATH(strcat(to - 1, from), LeftOOBErrorMessage(1)); 1277 EXPECT_DEATH(strcat(to, from - 1), LeftOOBErrorMessage(1)); 1278 EXPECT_DEATH(strcat(to + to_size, from), RightOOBErrorMessage(0)); 1279 EXPECT_DEATH(strcat(to, from + from_size), RightOOBErrorMessage(0)); 1280 1281 // "from" is not zero-terminated. 1282 from[from_size - 1] = 'z'; 1283 EXPECT_DEATH(strcat(to, from), RightOOBErrorMessage(0)); 1284 from[from_size - 1] = '\0'; 1285 // "to" is not zero-terminated. 1286 memset(to, 'z', to_size); 1287 EXPECT_DEATH(strcat(to, from), RightOOBErrorMessage(0)); 1288 // "to" is too short to fit "from". 1289 to[to_size - from_size + 1] = '\0'; 1290 EXPECT_DEATH(strcat(to, from), RightOOBErrorMessage(0)); 1291 // length of "to" is just enough. 1292 strcat(to, from + 1); 1293} 1294 1295static string OverlapErrorMessage(const string &func) { 1296 return func + "-param-overlap"; 1297} 1298 1299TEST(AddressSanitizer, StrArgsOverlapTest) { 1300 size_t size = Ident(100); 1301 char *str = Ident((char*)malloc(size)); 1302 1303// Do not check memcpy() on OS X 10.7 and later, where it actually aliases 1304// memmove(). 1305#if !defined(__APPLE__) || !defined(MAC_OS_X_VERSION_10_7) || \ 1306 (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7) 1307 // Check "memcpy". Use Ident() to avoid inlining. 1308 memset(str, 'z', size); 1309 Ident(memcpy)(str + 1, str + 11, 10); 1310 Ident(memcpy)(str, str, 0); 1311 EXPECT_DEATH(Ident(memcpy)(str, str + 14, 15), OverlapErrorMessage("memcpy")); 1312 EXPECT_DEATH(Ident(memcpy)(str + 14, str, 15), OverlapErrorMessage("memcpy")); 1313#endif 1314 1315 // We do not treat memcpy with to==from as a bug. 1316 // See http://llvm.org/bugs/show_bug.cgi?id=11763. 1317 // EXPECT_DEATH(Ident(memcpy)(str + 20, str + 20, 1), 1318 // OverlapErrorMessage("memcpy")); 1319 1320 // Check "strcpy". 1321 memset(str, 'z', size); 1322 str[9] = '\0'; 1323 strcpy(str + 10, str); 1324 EXPECT_DEATH(strcpy(str + 9, str), OverlapErrorMessage("strcpy")); 1325 EXPECT_DEATH(strcpy(str, str + 4), OverlapErrorMessage("strcpy")); 1326 strcpy(str, str + 5); 1327 1328 // Check "strncpy". 1329 memset(str, 'z', size); 1330 strncpy(str, str + 10, 10); 1331 EXPECT_DEATH(strncpy(str, str + 9, 10), OverlapErrorMessage("strncpy")); 1332 EXPECT_DEATH(strncpy(str + 9, str, 10), OverlapErrorMessage("strncpy")); 1333 str[10] = '\0'; 1334 strncpy(str + 11, str, 20); 1335 EXPECT_DEATH(strncpy(str + 10, str, 20), OverlapErrorMessage("strncpy")); 1336 1337 // Check "strcat". 1338 memset(str, 'z', size); 1339 str[10] = '\0'; 1340 str[20] = '\0'; 1341 strcat(str, str + 10); 1342 strcat(str, str + 11); 1343 str[10] = '\0'; 1344 strcat(str + 11, str); 1345 EXPECT_DEATH(strcat(str, str + 9), OverlapErrorMessage("strcat")); 1346 EXPECT_DEATH(strcat(str + 9, str), OverlapErrorMessage("strcat")); 1347 EXPECT_DEATH(strcat(str + 10, str), OverlapErrorMessage("strcat")); 1348 1349 free(str); 1350} 1351 1352void CallStrtol(const char *nptr, char **endptr, int base) { 1353 Ident(strtol(nptr, endptr, base)); 1354} 1355void CallStrtoll(const char *nptr, char **endptr, int base) { 1356 Ident(strtoll(nptr, endptr, base)); 1357} 1358typedef void(*PointerToCallStrtol)(const char*, char**, int); 1359 1360void RunStrtolOOBTest(PointerToCallStrtol Strtol) { 1361 char *array = MallocAndMemsetString(3); 1362 char *endptr = NULL; 1363 array[0] = '1'; 1364 array[1] = '2'; 1365 array[2] = '3'; 1366 // Invalid pointer to the string. 1367 EXPECT_DEATH(Strtol(array + 3, NULL, 0), RightOOBErrorMessage(0)); 1368 EXPECT_DEATH(Strtol(array - 1, NULL, 0), LeftOOBErrorMessage(1)); 1369 // Buffer overflow if there is no terminating null (depends on base). 1370 Strtol(array, &endptr, 3); 1371 EXPECT_EQ(array + 2, endptr); 1372 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0)); 1373 array[2] = 'z'; 1374 Strtol(array, &endptr, 35); 1375 EXPECT_EQ(array + 2, endptr); 1376 EXPECT_DEATH(Strtol(array, NULL, 36), RightOOBErrorMessage(0)); 1377 // Add terminating zero to get rid of overflow. 1378 array[2] = '\0'; 1379 Strtol(array, NULL, 36); 1380 // Don't check for overflow if base is invalid. 1381 Strtol(array - 1, NULL, -1); 1382 Strtol(array + 3, NULL, 1); 1383 // Sometimes we need to detect overflow if no digits are found. 1384 array[0] = array[1] = array[2] = ' '; 1385 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0)); 1386 array[2] = '+'; 1387 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0)); 1388 array[2] = '-'; 1389 EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0)); 1390 array[1] = '+'; 1391 Strtol(array, NULL, 0); 1392 array[1] = array[2] = 'z'; 1393 Strtol(array, &endptr, 0); 1394 EXPECT_EQ(array, endptr); 1395 Strtol(array + 2, NULL, 0); 1396 EXPECT_EQ(array, endptr); 1397 delete array; 1398} 1399 1400TEST(AddressSanitizer, StrtollOOBTest) { 1401 RunStrtolOOBTest(&CallStrtoll); 1402} 1403TEST(AddressSanitizer, StrtolOOBTest) { 1404 RunStrtolOOBTest(&CallStrtol); 1405} 1406 1407// At the moment we instrument memcpy/memove/memset calls at compile time so we 1408// can't handle OOB error if these functions are called by pointer, see disabled 1409// MemIntrinsicCallByPointerTest below 1410typedef void*(*PointerToMemTransfer)(void*, const void*, size_t); 1411typedef void*(*PointerToMemSet)(void*, int, size_t); 1412 1413void CallMemSetByPointer(PointerToMemSet MemSet) { 1414 size_t size = Ident(100); 1415 char *array = Ident((char*)malloc(size)); 1416 EXPECT_DEATH(MemSet(array, 0, 101), RightOOBErrorMessage(0)); 1417 free(array); 1418} 1419 1420void CallMemTransferByPointer(PointerToMemTransfer MemTransfer) { 1421 size_t size = Ident(100); 1422 char *src = Ident((char*)malloc(size)); 1423 char *dst = Ident((char*)malloc(size)); 1424 EXPECT_DEATH(MemTransfer(dst, src, 101), RightOOBErrorMessage(0)); 1425 free(src); 1426 free(dst); 1427} 1428 1429TEST(AddressSanitizer, DISABLED_MemIntrinsicCallByPointerTest) { 1430 CallMemSetByPointer(&memset); 1431 CallMemTransferByPointer(&memcpy); 1432 CallMemTransferByPointer(&memmove); 1433} 1434 1435// This test case fails 1436// Clang optimizes memcpy/memset calls which lead to unaligned access 1437TEST(AddressSanitizer, DISABLED_MemIntrinsicUnalignedAccessTest) { 1438 int size = Ident(4096); 1439 char *s = Ident((char*)malloc(size)); 1440 EXPECT_DEATH(memset(s + size - 1, 0, 2), RightOOBErrorMessage(0)); 1441 free(s); 1442} 1443 1444// TODO(samsonov): Add a test with malloc(0) 1445// TODO(samsonov): Add tests for str* and mem* functions. 1446 1447NOINLINE static int LargeFunction(bool do_bad_access) { 1448 int *x = new int[100]; 1449 x[0]++; 1450 x[1]++; 1451 x[2]++; 1452 x[3]++; 1453 x[4]++; 1454 x[5]++; 1455 x[6]++; 1456 x[7]++; 1457 x[8]++; 1458 x[9]++; 1459 1460 x[do_bad_access ? 100 : 0]++; int res = __LINE__; 1461 1462 x[10]++; 1463 x[11]++; 1464 x[12]++; 1465 x[13]++; 1466 x[14]++; 1467 x[15]++; 1468 x[16]++; 1469 x[17]++; 1470 x[18]++; 1471 x[19]++; 1472 1473 delete x; 1474 return res; 1475} 1476 1477// Test the we have correct debug info for the failing instruction. 1478// This test requires the in-process symbolizer to be enabled by default. 1479TEST(AddressSanitizer, DISABLED_LargeFunctionSymbolizeTest) { 1480 int failing_line = LargeFunction(false); 1481 char expected_warning[128]; 1482 sprintf(expected_warning, "LargeFunction.*asan_test.cc:%d", failing_line); 1483 EXPECT_DEATH(LargeFunction(true), expected_warning); 1484} 1485 1486// Check that we unwind and symbolize correctly. 1487TEST(AddressSanitizer, DISABLED_MallocFreeUnwindAndSymbolizeTest) { 1488 int *a = (int*)malloc_aaa(sizeof(int)); 1489 *a = 1; 1490 free_aaa(a); 1491 EXPECT_DEATH(*a = 1, "free_ccc.*free_bbb.*free_aaa.*" 1492 "malloc_fff.*malloc_eee.*malloc_ddd"); 1493} 1494 1495void *ThreadedTestAlloc(void *a) { 1496 int **p = (int**)a; 1497 *p = new int; 1498 return 0; 1499} 1500 1501void *ThreadedTestFree(void *a) { 1502 int **p = (int**)a; 1503 delete *p; 1504 return 0; 1505} 1506 1507void *ThreadedTestUse(void *a) { 1508 int **p = (int**)a; 1509 **p = 1; 1510 return 0; 1511} 1512 1513void ThreadedTestSpawn() { 1514 pthread_t t; 1515 int *x; 1516 pthread_create(&t, 0, ThreadedTestAlloc, &x); 1517 pthread_join(t, 0); 1518 pthread_create(&t, 0, ThreadedTestFree, &x); 1519 pthread_join(t, 0); 1520 pthread_create(&t, 0, ThreadedTestUse, &x); 1521 pthread_join(t, 0); 1522} 1523 1524TEST(AddressSanitizer, ThreadedTest) { 1525 EXPECT_DEATH(ThreadedTestSpawn(), 1526 ASAN_PCRE_DOTALL 1527 "Thread T.*created" 1528 ".*Thread T.*created" 1529 ".*Thread T.*created"); 1530} 1531 1532#if ASAN_NEEDS_SEGV 1533TEST(AddressSanitizer, ShadowGapTest) { 1534#if __WORDSIZE == 32 1535 char *addr = (char*)0x22000000; 1536#else 1537 char *addr = (char*)0x0000100000080000; 1538#endif 1539 EXPECT_DEATH(*addr = 1, "AddressSanitizer crashed on unknown"); 1540} 1541#endif // ASAN_NEEDS_SEGV 1542 1543extern "C" { 1544NOINLINE static void UseThenFreeThenUse() { 1545 char *x = Ident((char*)malloc(8)); 1546 *x = 1; 1547 free_aaa(x); 1548 *x = 2; 1549} 1550} 1551 1552TEST(AddressSanitizer, UseThenFreeThenUseTest) { 1553 EXPECT_DEATH(UseThenFreeThenUse(), "freed by thread"); 1554} 1555 1556TEST(AddressSanitizer, StrDupTest) { 1557 free(strdup(Ident("123"))); 1558} 1559 1560// Currently we create and poison redzone at right of global variables. 1561char glob5[5]; 1562static char static110[110]; 1563const char ConstGlob[7] = {1, 2, 3, 4, 5, 6, 7}; 1564static const char StaticConstGlob[3] = {9, 8, 7}; 1565extern int GlobalsTest(int x); 1566 1567TEST(AddressSanitizer, GlobalTest) { 1568 static char func_static15[15]; 1569 1570 static char fs1[10]; 1571 static char fs2[10]; 1572 static char fs3[10]; 1573 1574 glob5[Ident(0)] = 0; 1575 glob5[Ident(1)] = 0; 1576 glob5[Ident(2)] = 0; 1577 glob5[Ident(3)] = 0; 1578 glob5[Ident(4)] = 0; 1579 1580 EXPECT_DEATH(glob5[Ident(5)] = 0, 1581 "0 bytes to the right of global variable.*glob5.* size 5"); 1582 EXPECT_DEATH(glob5[Ident(5+6)] = 0, 1583 "6 bytes to the right of global variable.*glob5.* size 5"); 1584 Ident(static110); // avoid optimizations 1585 static110[Ident(0)] = 0; 1586 static110[Ident(109)] = 0; 1587 EXPECT_DEATH(static110[Ident(110)] = 0, 1588 "0 bytes to the right of global variable"); 1589 EXPECT_DEATH(static110[Ident(110+7)] = 0, 1590 "7 bytes to the right of global variable"); 1591 1592 Ident(func_static15); // avoid optimizations 1593 func_static15[Ident(0)] = 0; 1594 EXPECT_DEATH(func_static15[Ident(15)] = 0, 1595 "0 bytes to the right of global variable"); 1596 EXPECT_DEATH(func_static15[Ident(15 + 9)] = 0, 1597 "9 bytes to the right of global variable"); 1598 1599 Ident(fs1); 1600 Ident(fs2); 1601 Ident(fs3); 1602 1603 // We don't create left redzones, so this is not 100% guaranteed to fail. 1604 // But most likely will. 1605 EXPECT_DEATH(fs2[Ident(-1)] = 0, "is located.*of global variable"); 1606 1607 EXPECT_DEATH(Ident(Ident(ConstGlob)[8]), 1608 "is located 1 bytes to the right of .*ConstGlob"); 1609 EXPECT_DEATH(Ident(Ident(StaticConstGlob)[5]), 1610 "is located 2 bytes to the right of .*StaticConstGlob"); 1611 1612 // call stuff from another file. 1613 GlobalsTest(0); 1614} 1615 1616TEST(AddressSanitizer, GlobalStringConstTest) { 1617 static const char *zoo = "FOOBAR123"; 1618 const char *p = Ident(zoo); 1619 EXPECT_DEATH(Ident(p[15]), "is ascii string 'FOOBAR123'"); 1620} 1621 1622TEST(AddressSanitizer, FileNameInGlobalReportTest) { 1623 static char zoo[10]; 1624 const char *p = Ident(zoo); 1625 // The file name should be present in the report. 1626 EXPECT_DEATH(Ident(p[15]), "zoo.*asan_test.cc"); 1627} 1628 1629int *ReturnsPointerToALocalObject() { 1630 int a = 0; 1631 return Ident(&a); 1632} 1633 1634#if ASAN_UAR == 1 1635TEST(AddressSanitizer, LocalReferenceReturnTest) { 1636 int *(*f)() = Ident(ReturnsPointerToALocalObject); 1637 int *p = f(); 1638 // Call 'f' a few more times, 'p' should still be poisoned. 1639 for (int i = 0; i < 32; i++) 1640 f(); 1641 EXPECT_DEATH(*p = 1, "AddressSanitizer stack-use-after-return"); 1642 EXPECT_DEATH(*p = 1, "is located.*in frame .*ReturnsPointerToALocal"); 1643} 1644#endif 1645 1646template <int kSize> 1647NOINLINE static void FuncWithStack() { 1648 char x[kSize]; 1649 Ident(x)[0] = 0; 1650 Ident(x)[kSize-1] = 0; 1651} 1652 1653static void LotsOfStackReuse() { 1654 int LargeStack[10000]; 1655 Ident(LargeStack)[0] = 0; 1656 for (int i = 0; i < 10000; i++) { 1657 FuncWithStack<128 * 1>(); 1658 FuncWithStack<128 * 2>(); 1659 FuncWithStack<128 * 4>(); 1660 FuncWithStack<128 * 8>(); 1661 FuncWithStack<128 * 16>(); 1662 FuncWithStack<128 * 32>(); 1663 FuncWithStack<128 * 64>(); 1664 FuncWithStack<128 * 128>(); 1665 FuncWithStack<128 * 256>(); 1666 FuncWithStack<128 * 512>(); 1667 Ident(LargeStack)[0] = 0; 1668 } 1669} 1670 1671TEST(AddressSanitizer, StressStackReuseTest) { 1672 LotsOfStackReuse(); 1673} 1674 1675TEST(AddressSanitizer, ThreadedStressStackReuseTest) { 1676 const int kNumThreads = 20; 1677 pthread_t t[kNumThreads]; 1678 for (int i = 0; i < kNumThreads; i++) { 1679 pthread_create(&t[i], 0, (void* (*)(void *x))LotsOfStackReuse, 0); 1680 } 1681 for (int i = 0; i < kNumThreads; i++) { 1682 pthread_join(t[i], 0); 1683 } 1684} 1685 1686static void *PthreadExit(void *a) { 1687 pthread_exit(0); 1688 return 0; 1689} 1690 1691TEST(AddressSanitizer, PthreadExitTest) { 1692 pthread_t t; 1693 for (int i = 0; i < 1000; i++) { 1694 pthread_create(&t, 0, PthreadExit, 0); 1695 pthread_join(t, 0); 1696 } 1697} 1698 1699#ifdef __EXCEPTIONS 1700NOINLINE static void StackReuseAndException() { 1701 int large_stack[1000]; 1702 Ident(large_stack); 1703 ASAN_THROW(1); 1704} 1705 1706// TODO(kcc): support exceptions with use-after-return. 1707TEST(AddressSanitizer, DISABLED_StressStackReuseAndExceptionsTest) { 1708 for (int i = 0; i < 10000; i++) { 1709 try { 1710 StackReuseAndException(); 1711 } catch(...) { 1712 } 1713 } 1714} 1715#endif 1716 1717TEST(AddressSanitizer, MlockTest) { 1718 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 1719 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 1720 EXPECT_EQ(0, munlockall()); 1721 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 1722} 1723 1724struct LargeStruct { 1725 int foo[100]; 1726}; 1727 1728// Test for bug http://llvm.org/bugs/show_bug.cgi?id=11763. 1729// Struct copy should not cause asan warning even if lhs == rhs. 1730TEST(AddressSanitizer, LargeStructCopyTest) { 1731 LargeStruct a; 1732 *Ident(&a) = *Ident(&a); 1733} 1734 1735__attribute__((no_address_safety_analysis)) 1736static void NoAddressSafety() { 1737 char *foo = new char[10]; 1738 Ident(foo)[10] = 0; 1739 delete [] foo; 1740} 1741 1742TEST(AddressSanitizer, AttributeNoAddressSafetyTest) { 1743 Ident(NoAddressSafety)(); 1744} 1745 1746// ------------------ demo tests; run each one-by-one ------------- 1747// e.g. --gtest_filter=*DemoOOBLeftHigh --gtest_also_run_disabled_tests 1748TEST(AddressSanitizer, DISABLED_DemoThreadedTest) { 1749 ThreadedTestSpawn(); 1750} 1751 1752void *SimpleBugOnSTack(void *x = 0) { 1753 char a[20]; 1754 Ident(a)[20] = 0; 1755 return 0; 1756} 1757 1758TEST(AddressSanitizer, DISABLED_DemoStackTest) { 1759 SimpleBugOnSTack(); 1760} 1761 1762TEST(AddressSanitizer, DISABLED_DemoThreadStackTest) { 1763 pthread_t t; 1764 pthread_create(&t, 0, SimpleBugOnSTack, 0); 1765 pthread_join(t, 0); 1766} 1767 1768TEST(AddressSanitizer, DISABLED_DemoUAFLowIn) { 1769 uaf_test<U1>(10, 0); 1770} 1771TEST(AddressSanitizer, DISABLED_DemoUAFLowLeft) { 1772 uaf_test<U1>(10, -2); 1773} 1774TEST(AddressSanitizer, DISABLED_DemoUAFLowRight) { 1775 uaf_test<U1>(10, 10); 1776} 1777 1778TEST(AddressSanitizer, DISABLED_DemoUAFHigh) { 1779 uaf_test<U1>(kLargeMalloc, 0); 1780} 1781 1782TEST(AddressSanitizer, DISABLED_DemoOOBLeftLow) { 1783 oob_test<U1>(10, -1); 1784} 1785 1786TEST(AddressSanitizer, DISABLED_DemoOOBLeftHigh) { 1787 oob_test<U1>(kLargeMalloc, -1); 1788} 1789 1790TEST(AddressSanitizer, DISABLED_DemoOOBRightLow) { 1791 oob_test<U1>(10, 10); 1792} 1793 1794TEST(AddressSanitizer, DISABLED_DemoOOBRightHigh) { 1795 oob_test<U1>(kLargeMalloc, kLargeMalloc); 1796} 1797 1798TEST(AddressSanitizer, DISABLED_DemoOOM) { 1799 size_t size = __WORDSIZE == 64 ? (size_t)(1ULL << 40) : (0xf0000000); 1800 printf("%p\n", malloc(size)); 1801} 1802 1803TEST(AddressSanitizer, DISABLED_DemoDoubleFreeTest) { 1804 DoubleFree(); 1805} 1806 1807TEST(AddressSanitizer, DISABLED_DemoNullDerefTest) { 1808 int *a = 0; 1809 Ident(a)[10] = 0; 1810} 1811 1812TEST(AddressSanitizer, DISABLED_DemoFunctionStaticTest) { 1813 static char a[100]; 1814 static char b[100]; 1815 static char c[100]; 1816 Ident(a); 1817 Ident(b); 1818 Ident(c); 1819 Ident(a)[5] = 0; 1820 Ident(b)[105] = 0; 1821 Ident(a)[5] = 0; 1822} 1823 1824TEST(AddressSanitizer, DISABLED_DemoTooMuchMemoryTest) { 1825 const size_t kAllocSize = (1 << 28) - 1024; 1826 size_t total_size = 0; 1827 while (true) { 1828 char *x = (char*)malloc(kAllocSize); 1829 memset(x, 0, kAllocSize); 1830 total_size += kAllocSize; 1831 fprintf(stderr, "total: %ldM\n", (long)total_size >> 20); 1832 } 1833} 1834 1835#ifdef __APPLE__ 1836#include "asan_mac_test.h" 1837// TODO(glider): figure out whether we still need these tests. Is it correct 1838// to intercept CFAllocator? 1839TEST(AddressSanitizerMac, DISABLED_CFAllocatorDefaultDoubleFree) { 1840 EXPECT_DEATH( 1841 CFAllocatorDefaultDoubleFree(), 1842 "attempting double-free"); 1843} 1844 1845TEST(AddressSanitizerMac, DISABLED_CFAllocatorSystemDefaultDoubleFree) { 1846 EXPECT_DEATH( 1847 CFAllocatorSystemDefaultDoubleFree(), 1848 "attempting double-free"); 1849} 1850 1851TEST(AddressSanitizerMac, DISABLED_CFAllocatorMallocDoubleFree) { 1852 EXPECT_DEATH(CFAllocatorMallocDoubleFree(), "attempting double-free"); 1853} 1854 1855TEST(AddressSanitizerMac, DISABLED_CFAllocatorMallocZoneDoubleFree) { 1856 EXPECT_DEATH(CFAllocatorMallocZoneDoubleFree(), "attempting double-free"); 1857} 1858 1859TEST(AddressSanitizerMac, GCDDispatchAsync) { 1860 // Make sure the whole ASan report is printed, i.e. that we don't die 1861 // on a CHECK. 1862 EXPECT_DEATH(TestGCDDispatchAsync(), "Shadow byte and word"); 1863} 1864 1865TEST(AddressSanitizerMac, GCDDispatchSync) { 1866 // Make sure the whole ASan report is printed, i.e. that we don't die 1867 // on a CHECK. 1868 EXPECT_DEATH(TestGCDDispatchSync(), "Shadow byte and word"); 1869} 1870 1871 1872TEST(AddressSanitizerMac, GCDReuseWqthreadsAsync) { 1873 // Make sure the whole ASan report is printed, i.e. that we don't die 1874 // on a CHECK. 1875 EXPECT_DEATH(TestGCDReuseWqthreadsAsync(), "Shadow byte and word"); 1876} 1877 1878TEST(AddressSanitizerMac, GCDReuseWqthreadsSync) { 1879 // Make sure the whole ASan report is printed, i.e. that we don't die 1880 // on a CHECK. 1881 EXPECT_DEATH(TestGCDReuseWqthreadsSync(), "Shadow byte and word"); 1882} 1883 1884TEST(AddressSanitizerMac, GCDDispatchAfter) { 1885 // Make sure the whole ASan report is printed, i.e. that we don't die 1886 // on a CHECK. 1887 EXPECT_DEATH(TestGCDDispatchAfter(), "Shadow byte and word"); 1888} 1889 1890TEST(AddressSanitizerMac, GCDSourceEvent) { 1891 // Make sure the whole ASan report is printed, i.e. that we don't die 1892 // on a CHECK. 1893 EXPECT_DEATH(TestGCDSourceEvent(), "Shadow byte and word"); 1894} 1895 1896TEST(AddressSanitizerMac, GCDSourceCancel) { 1897 // Make sure the whole ASan report is printed, i.e. that we don't die 1898 // on a CHECK. 1899 EXPECT_DEATH(TestGCDSourceCancel(), "Shadow byte and word"); 1900} 1901 1902TEST(AddressSanitizerMac, GCDGroupAsync) { 1903 // Make sure the whole ASan report is printed, i.e. that we don't die 1904 // on a CHECK. 1905 EXPECT_DEATH(TestGCDGroupAsync(), "Shadow byte and word"); 1906} 1907 1908void *MallocIntrospectionLockWorker(void *_) { 1909 const int kNumPointers = 100; 1910 int i; 1911 void *pointers[kNumPointers]; 1912 for (i = 0; i < kNumPointers; i++) { 1913 pointers[i] = malloc(i + 1); 1914 } 1915 for (i = 0; i < kNumPointers; i++) { 1916 free(pointers[i]); 1917 } 1918 1919 return NULL; 1920} 1921 1922void *MallocIntrospectionLockForker(void *_) { 1923 pid_t result = fork(); 1924 if (result == -1) { 1925 perror("fork"); 1926 } 1927 assert(result != -1); 1928 if (result == 0) { 1929 // Call malloc in the child process to make sure we won't deadlock. 1930 void *ptr = malloc(42); 1931 free(ptr); 1932 exit(0); 1933 } else { 1934 // Return in the parent process. 1935 return NULL; 1936 } 1937} 1938 1939TEST(AddressSanitizerMac, MallocIntrospectionLock) { 1940 // Incorrect implementation of force_lock and force_unlock in our malloc zone 1941 // will cause forked processes to deadlock. 1942 // TODO(glider): need to detect that none of the child processes deadlocked. 1943 const int kNumWorkers = 5, kNumIterations = 100; 1944 int i, iter; 1945 for (iter = 0; iter < kNumIterations; iter++) { 1946 pthread_t workers[kNumWorkers], forker; 1947 for (i = 0; i < kNumWorkers; i++) { 1948 pthread_create(&workers[i], 0, MallocIntrospectionLockWorker, 0); 1949 } 1950 pthread_create(&forker, 0, MallocIntrospectionLockForker, 0); 1951 for (i = 0; i < kNumWorkers; i++) { 1952 pthread_join(workers[i], 0); 1953 } 1954 pthread_join(forker, 0); 1955 } 1956} 1957 1958void *TSDAllocWorker(void *test_key) { 1959 if (test_key) { 1960 void *mem = malloc(10); 1961 pthread_setspecific(*(pthread_key_t*)test_key, mem); 1962 } 1963 return NULL; 1964} 1965 1966TEST(AddressSanitizerMac, DISABLED_TSDWorkqueueTest) { 1967 pthread_t th; 1968 pthread_key_t test_key; 1969 pthread_key_create(&test_key, CallFreeOnWorkqueue); 1970 pthread_create(&th, NULL, TSDAllocWorker, &test_key); 1971 pthread_join(th, NULL); 1972 pthread_key_delete(test_key); 1973} 1974 1975// Test that CFStringCreateCopy does not copy constant strings. 1976TEST(AddressSanitizerMac, CFStringCreateCopy) { 1977 CFStringRef str = CFSTR("Hello world!\n"); 1978 CFStringRef str2 = CFStringCreateCopy(0, str); 1979 EXPECT_EQ(str, str2); 1980} 1981 1982#endif // __APPLE__ 1983 1984// Test that instrumentation of stack allocations takes into account 1985// AllocSize of a type, and not its StoreSize (16 vs 10 bytes for long double). 1986// See http://llvm.org/bugs/show_bug.cgi?id=12047 for more details. 1987TEST(AddressSanitizer, LongDoubleNegativeTest) { 1988 long double a, b; 1989 static long double c; 1990 memcpy(Ident(&a), Ident(&b), sizeof(long double)); 1991 memcpy(Ident(&c), Ident(&b), sizeof(long double)); 1992}; 1993 1994int main(int argc, char **argv) { 1995 progname = argv[0]; 1996 testing::GTEST_FLAG(death_test_style) = "threadsafe"; 1997 testing::InitGoogleTest(&argc, argv); 1998 return RUN_ALL_TESTS(); 1999} 2000