1 //===-- msan_test.cpp -----------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file is a part of MemorySanitizer. 10 // 11 // MemorySanitizer unit tests. 12 //===----------------------------------------------------------------------===// 13 14 #ifndef MSAN_EXTERNAL_TEST_CONFIG 15 #include "msan_test_config.h" 16 #endif // MSAN_EXTERNAL_TEST_CONFIG 17 18 #include "sanitizer_common/tests/sanitizer_test_utils.h" 19 20 #include "sanitizer/allocator_interface.h" 21 #include "sanitizer/msan_interface.h" 22 23 #if defined(__FreeBSD__) 24 # define _KERNEL // To declare 'shminfo' structure. 25 # include <sys/shm.h> 26 # undef _KERNEL 27 extern "C" { 28 // <sys/shm.h> doesn't declare these functions in _KERNEL mode. 29 void *shmat(int, const void *, int); 30 int shmget(key_t, size_t, int); 31 int shmctl(int, int, struct shmid_ds *); 32 int shmdt(const void *); 33 } 34 #endif 35 36 #if defined(__linux__) && !defined(__GLIBC__) && !defined(__ANDROID__) 37 #define MUSL 1 38 #endif 39 40 #include <inttypes.h> 41 #include <stdlib.h> 42 #include <stdarg.h> 43 #include <stdio.h> 44 #include <wchar.h> 45 #include <math.h> 46 47 #include <arpa/inet.h> 48 #include <dlfcn.h> 49 #include <grp.h> 50 #include <unistd.h> 51 #include <link.h> 52 #include <limits.h> 53 #include <sys/time.h> 54 #include <poll.h> 55 #include <sys/types.h> 56 #include <sys/stat.h> 57 #include <fcntl.h> 58 #include <sys/resource.h> 59 #include <sys/ioctl.h> 60 #include <sys/statvfs.h> 61 #include <sys/utsname.h> 62 #include <sys/mman.h> 63 #include <dirent.h> 64 #include <pwd.h> 65 #include <sys/socket.h> 66 #include <netdb.h> 67 #include <wordexp.h> 68 #include <sys/ipc.h> 69 #include <sys/shm.h> 70 71 #if defined(__NetBSD__) 72 # include <signal.h> 73 # include <netinet/in.h> 74 # include <sys/uio.h> 75 # include <sys/mount.h> 76 # include <sys/sysctl.h> 77 # include <net/if.h> 78 # include <net/if_ether.h> 79 #elif defined(__FreeBSD__) 80 # include <signal.h> 81 # include <netinet/in.h> 82 # include <pthread_np.h> 83 # include <sys/uio.h> 84 # include <sys/mount.h> 85 # include <sys/sysctl.h> 86 # include <net/ethernet.h> 87 # define f_namelen f_namemax // FreeBSD names this statfs field so. 88 # define cpu_set_t cpuset_t 89 extern "C" { 90 // FreeBSD's <ssp/string.h> defines mempcpy() to be a macro expanding into 91 // a __builtin___mempcpy_chk() call, but since Msan RTL defines it as an 92 // ordinary function, we can declare it here to complete the tests. 93 void *mempcpy(void *dest, const void *src, size_t n); 94 } 95 #else 96 # include <malloc.h> 97 # include <sys/sysinfo.h> 98 # include <sys/vfs.h> 99 # include <mntent.h> 100 # include <netinet/ether.h> 101 # if defined(__linux__) 102 # include <sys/uio.h> 103 # endif 104 #endif 105 106 #if defined(__i386__) || defined(__x86_64__) 107 # include <emmintrin.h> 108 # define MSAN_HAS_M128 1 109 #else 110 # define MSAN_HAS_M128 0 111 #endif 112 113 #ifdef __AVX2__ 114 # include <immintrin.h> 115 #endif 116 117 #if defined(__FreeBSD__) || defined(__NetBSD__) 118 # define FILE_TO_READ "/bin/cat" 119 # define DIR_TO_READ "/bin" 120 # define SUBFILE_TO_READ "cat" 121 # define SYMLINK_TO_READ "/usr/bin/tar" 122 # define SUPERUSER_GROUP "wheel" 123 #else 124 # define FILE_TO_READ "/proc/self/stat" 125 # define DIR_TO_READ "/proc/self" 126 # define SUBFILE_TO_READ "stat" 127 # define SYMLINK_TO_READ "/proc/self/exe" 128 # define SUPERUSER_GROUP "root" 129 #endif 130 131 static uintptr_t GetPageSize() { 132 return sysconf(_SC_PAGESIZE); 133 } 134 135 const size_t kMaxPathLength = 4096; 136 137 typedef unsigned char U1; 138 typedef unsigned short U2; 139 typedef unsigned int U4; 140 typedef unsigned long long U8; 141 typedef signed char S1; 142 typedef signed short S2; 143 typedef signed int S4; 144 typedef signed long long S8; 145 #define NOINLINE __attribute__((noinline)) 146 #define ALWAYS_INLINE __attribute__((always_inline)) 147 148 static bool TrackingOrigins() { 149 S8 x; 150 __msan_set_origin(&x, sizeof(x), 0x1234); 151 U4 origin = __msan_get_origin(&x); 152 __msan_set_origin(&x, sizeof(x), 0); 153 return __msan_origin_is_descendant_or_same(origin, 0x1234); 154 } 155 156 #define EXPECT_ORIGIN(expected, origin) \ 157 EXPECT_TRUE(__msan_origin_is_descendant_or_same((origin), (expected))) 158 159 #define EXPECT_UMR(action) \ 160 do { \ 161 __msan_set_expect_umr(1); \ 162 action; \ 163 __msan_set_expect_umr(0); \ 164 } while (0) 165 166 #define EXPECT_UMR_O(action, origin) \ 167 do { \ 168 __msan_set_expect_umr(1); \ 169 action; \ 170 __msan_set_expect_umr(0); \ 171 if (TrackingOrigins()) EXPECT_ORIGIN(origin, __msan_get_umr_origin()); \ 172 } while (0) 173 174 #define EXPECT_POISONED(x) ExpectPoisoned(x) 175 176 template <typename T> 177 void ExpectPoisoned(const T& t) { 178 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 179 } 180 181 #define EXPECT_POISONED_O(x, origin) \ 182 ExpectPoisonedWithOrigin(x, origin) 183 184 template<typename T> 185 void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 186 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 187 if (TrackingOrigins()) EXPECT_ORIGIN(origin, __msan_get_origin((void *)&t)); 188 } 189 190 #define EXPECT_NOT_POISONED(x) EXPECT_EQ(true, TestForNotPoisoned((x))) 191 #define EXPECT_NOT_POISONED2(data, size) \ 192 EXPECT_EQ(true, TestForNotPoisoned((data), (size))) 193 194 bool TestForNotPoisoned(const void *data, size_t size) { 195 return __msan_test_shadow(data, size) == -1; 196 } 197 198 template<typename T> 199 bool TestForNotPoisoned(const T& t) { 200 return TestForNotPoisoned((void *)&t, sizeof(t)); 201 } 202 203 static U8 poisoned_array[100]; 204 template<class T> 205 T *GetPoisoned(int i = 0, T val = 0) { 206 T *res = (T*)&poisoned_array[i]; 207 *res = val; 208 __msan_poison(&poisoned_array[i], sizeof(T)); 209 return res; 210 } 211 212 template<class T> 213 T *GetPoisonedO(int i, U4 origin, T val = 0) { 214 T *res = (T*)&poisoned_array[i]; 215 *res = val; 216 __msan_poison(&poisoned_array[i], sizeof(T)); 217 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 218 return res; 219 } 220 221 template<typename T> 222 T Poisoned(T v = 0, T s = (T)(-1)) { 223 __msan_partial_poison(&v, &s, sizeof(T)); 224 return v; 225 } 226 227 template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 228 229 static volatile int g_one = 1; 230 static volatile int g_zero = 0; 231 static volatile int g_0 = 0; 232 static volatile int g_1 = 1; 233 234 S4 a_s4[100]; 235 S8 a_s8[100]; 236 237 // Check that malloc poisons memory. 238 // A lot of tests below depend on this. 239 TEST(MemorySanitizerSanity, PoisonInMalloc) { 240 int *x = (int*)malloc(sizeof(int)); 241 EXPECT_POISONED(*x); 242 free(x); 243 } 244 245 TEST(MemorySanitizer, NegativeTest1) { 246 S4 *x = GetPoisoned<S4>(); 247 if (g_one) 248 *x = 0; 249 EXPECT_NOT_POISONED(*x); 250 } 251 252 TEST(MemorySanitizer, PositiveTest1) { 253 // Load to store. 254 EXPECT_POISONED(*GetPoisoned<S1>()); 255 EXPECT_POISONED(*GetPoisoned<S2>()); 256 EXPECT_POISONED(*GetPoisoned<S4>()); 257 EXPECT_POISONED(*GetPoisoned<S8>()); 258 259 // S->S conversions. 260 EXPECT_POISONED(*GetPoisoned<S1>()); 261 EXPECT_POISONED(*GetPoisoned<S1>()); 262 EXPECT_POISONED(*GetPoisoned<S1>()); 263 264 EXPECT_POISONED(*GetPoisoned<S2>()); 265 EXPECT_POISONED(*GetPoisoned<S2>()); 266 EXPECT_POISONED(*GetPoisoned<S2>()); 267 268 EXPECT_POISONED(*GetPoisoned<S4>()); 269 EXPECT_POISONED(*GetPoisoned<S4>()); 270 EXPECT_POISONED(*GetPoisoned<S4>()); 271 272 EXPECT_POISONED(*GetPoisoned<S8>()); 273 EXPECT_POISONED(*GetPoisoned<S8>()); 274 EXPECT_POISONED(*GetPoisoned<S8>()); 275 276 // ZExt 277 EXPECT_POISONED(*GetPoisoned<U1>()); 278 EXPECT_POISONED(*GetPoisoned<U1>()); 279 EXPECT_POISONED(*GetPoisoned<U1>()); 280 EXPECT_POISONED(*GetPoisoned<U2>()); 281 EXPECT_POISONED(*GetPoisoned<U2>()); 282 EXPECT_POISONED(*GetPoisoned<U4>()); 283 284 // Unary ops. 285 EXPECT_POISONED(- *GetPoisoned<S4>()); 286 287 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 288 289 290 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 291 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 292 } 293 294 TEST(MemorySanitizer, Phi1) { 295 S4 c; 296 if (g_one) { 297 c = *GetPoisoned<S4>(); 298 } else { 299 break_optimization(0); 300 c = 0; 301 } 302 EXPECT_POISONED(c); 303 } 304 305 TEST(MemorySanitizer, Phi2) { 306 S4 i = *GetPoisoned<S4>(); 307 S4 n = g_one; 308 EXPECT_UMR(for (; i < g_one; i++);); 309 EXPECT_POISONED(i); 310 } 311 312 NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 313 NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 314 NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 315 316 TEST(MemorySanitizer, ArgTest) { 317 Arg1ExpectUMR(*GetPoisoned<S4>()); 318 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 319 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 320 } 321 322 323 TEST(MemorySanitizer, CallAndRet) { 324 ReturnPoisoned<S1>(); 325 ReturnPoisoned<S2>(); 326 ReturnPoisoned<S4>(); 327 ReturnPoisoned<S8>(); 328 329 EXPECT_POISONED(ReturnPoisoned<S1>()); 330 EXPECT_POISONED(ReturnPoisoned<S2>()); 331 EXPECT_POISONED(ReturnPoisoned<S4>()); 332 EXPECT_POISONED(ReturnPoisoned<S8>()); 333 } 334 335 // malloc() in the following test may be optimized to produce a compile-time 336 // undef value. Check that we trap on the volatile assignment anyway. 337 TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 338 S4 *x = (int*)malloc(sizeof(S4)); 339 EXPECT_POISONED(*x); 340 free(x); 341 } 342 343 TEST(MemorySanitizer, Malloc) { 344 S4 *x = (int*)Ident(malloc(sizeof(S4))); 345 EXPECT_POISONED(*x); 346 free(x); 347 } 348 349 TEST(MemorySanitizer, Realloc) { 350 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 351 EXPECT_POISONED(x[0]); 352 x[0] = 1; 353 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 354 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 355 EXPECT_POISONED(x[1]); 356 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 357 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 358 EXPECT_POISONED(x[2]); 359 EXPECT_POISONED(x[1]); 360 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 361 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 362 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 363 EXPECT_POISONED(x[1]); 364 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 365 EXPECT_POISONED(x[1]); 366 EXPECT_POISONED(x[2]); 367 free(x); 368 } 369 370 TEST(MemorySanitizer, Calloc) { 371 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 372 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 373 EXPECT_EQ(0, *x); 374 free(x); 375 } 376 377 TEST(MemorySanitizer, CallocReturnsZeroMem) { 378 size_t sizes[] = {16, 1000, 10000, 100000, 2100000}; 379 for (size_t s = 0; s < sizeof(sizes)/sizeof(sizes[0]); s++) { 380 size_t size = sizes[s]; 381 for (size_t iter = 0; iter < 5; iter++) { 382 char *x = Ident((char*)calloc(1, size)); 383 EXPECT_EQ(x[0], 0); 384 EXPECT_EQ(x[size - 1], 0); 385 EXPECT_EQ(x[size / 2], 0); 386 EXPECT_EQ(x[size / 3], 0); 387 EXPECT_EQ(x[size / 4], 0); 388 memset(x, 0x42, size); 389 free(Ident(x)); 390 } 391 } 392 } 393 394 TEST(MemorySanitizer, AndOr) { 395 U4 *p = GetPoisoned<U4>(); 396 // We poison two bytes in the midle of a 4-byte word to make the test 397 // correct regardless of endianness. 398 ((U1*)p)[1] = 0; 399 ((U1*)p)[2] = 0xff; 400 EXPECT_NOT_POISONED(*p & 0x00ffff00); 401 EXPECT_NOT_POISONED(*p & 0x00ff0000); 402 EXPECT_NOT_POISONED(*p & 0x0000ff00); 403 EXPECT_POISONED(*p & 0xff000000); 404 EXPECT_POISONED(*p & 0x000000ff); 405 EXPECT_POISONED(*p & 0x0000ffff); 406 EXPECT_POISONED(*p & 0xffff0000); 407 408 EXPECT_NOT_POISONED(*p | 0xff0000ff); 409 EXPECT_NOT_POISONED(*p | 0xff00ffff); 410 EXPECT_NOT_POISONED(*p | 0xffff00ff); 411 EXPECT_POISONED(*p | 0xff000000); 412 EXPECT_POISONED(*p | 0x000000ff); 413 EXPECT_POISONED(*p | 0x0000ffff); 414 EXPECT_POISONED(*p | 0xffff0000); 415 416 EXPECT_POISONED((int)*GetPoisoned<bool>() & (int)*GetPoisoned<bool>()); 417 } 418 419 template<class T> 420 static bool applyNot(T value, T shadow) { 421 __msan_partial_poison(&value, &shadow, sizeof(T)); 422 return !value; 423 } 424 425 TEST(MemorySanitizer, Not) { 426 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 427 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 428 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 429 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 430 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 431 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 432 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 433 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 434 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 435 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 436 437 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 438 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 439 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 440 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 441 442 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 443 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 444 } 445 446 TEST(MemorySanitizer, Shift) { 447 U4 *up = GetPoisoned<U4>(); 448 ((U1*)up)[0] = 0; 449 ((U1*)up)[3] = 0xff; 450 EXPECT_NOT_POISONED(*up >> 30); 451 EXPECT_NOT_POISONED(*up >> 24); 452 EXPECT_POISONED(*up >> 23); 453 EXPECT_POISONED(*up >> 10); 454 455 EXPECT_NOT_POISONED(*up << 30); 456 EXPECT_NOT_POISONED(*up << 24); 457 EXPECT_POISONED(*up << 23); 458 EXPECT_POISONED(*up << 10); 459 460 S4 *sp = (S4*)up; 461 EXPECT_NOT_POISONED(*sp >> 30); 462 EXPECT_NOT_POISONED(*sp >> 24); 463 EXPECT_POISONED(*sp >> 23); 464 EXPECT_POISONED(*sp >> 10); 465 466 sp = GetPoisoned<S4>(); 467 ((S1*)sp)[1] = 0; 468 ((S1*)sp)[2] = 0; 469 EXPECT_POISONED(*sp >> 31); 470 471 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 472 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 473 } 474 475 NOINLINE static int GetPoisonedZero() { 476 int *zero = new int; 477 *zero = 0; 478 __msan_poison(zero, sizeof(*zero)); 479 int res = *zero; 480 delete zero; 481 return res; 482 } 483 484 TEST(MemorySanitizer, LoadFromDirtyAddress) { 485 int *a = new int; 486 *a = 0; 487 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 488 delete a; 489 } 490 491 TEST(MemorySanitizer, StoreToDirtyAddress) { 492 int *a = new int; 493 EXPECT_UMR(a[GetPoisonedZero()] = 0); 494 break_optimization(a); 495 delete a; 496 } 497 498 499 NOINLINE void StackTestFunc() { 500 S4 p4; 501 S4 ok4 = 1; 502 S2 p2; 503 S2 ok2 = 1; 504 S1 p1; 505 S1 ok1 = 1; 506 break_optimization(&p4); 507 break_optimization(&ok4); 508 break_optimization(&p2); 509 break_optimization(&ok2); 510 break_optimization(&p1); 511 break_optimization(&ok1); 512 513 EXPECT_POISONED(p4); 514 EXPECT_POISONED(p2); 515 EXPECT_POISONED(p1); 516 EXPECT_NOT_POISONED(ok1); 517 EXPECT_NOT_POISONED(ok2); 518 EXPECT_NOT_POISONED(ok4); 519 } 520 521 TEST(MemorySanitizer, StackTest) { 522 StackTestFunc(); 523 } 524 525 NOINLINE void StackStressFunc() { 526 int foo[10000]; 527 break_optimization(foo); 528 } 529 530 TEST(MemorySanitizer, DISABLED_StackStressTest) { 531 for (int i = 0; i < 1000000; i++) 532 StackStressFunc(); 533 } 534 535 template<class T> 536 void TestFloatingPoint() { 537 static volatile T v; 538 static T g[100]; 539 break_optimization(&g); 540 T *x = GetPoisoned<T>(); 541 T *y = GetPoisoned<T>(1); 542 EXPECT_POISONED(*x); 543 EXPECT_POISONED((long long)*x); 544 EXPECT_POISONED((int)*x); 545 g[0] = *x; 546 g[1] = *x + *y; 547 g[2] = *x - *y; 548 g[3] = *x * *y; 549 } 550 551 TEST(MemorySanitizer, FloatingPointTest) { 552 TestFloatingPoint<float>(); 553 TestFloatingPoint<double>(); 554 } 555 556 TEST(MemorySanitizer, DynMem) { 557 S4 x = 0; 558 S4 *y = GetPoisoned<S4>(); 559 memcpy(y, &x, g_one * sizeof(S4)); 560 EXPECT_NOT_POISONED(*y); 561 } 562 563 static char *DynRetTestStr; 564 565 TEST(MemorySanitizer, DynRet) { 566 ReturnPoisoned<S8>(); 567 EXPECT_NOT_POISONED(atoi("0")); 568 } 569 570 TEST(MemorySanitizer, DynRet1) { 571 ReturnPoisoned<S8>(); 572 } 573 574 struct LargeStruct { 575 S4 x[10]; 576 }; 577 578 NOINLINE 579 LargeStruct LargeRetTest() { 580 LargeStruct res; 581 res.x[0] = *GetPoisoned<S4>(); 582 res.x[1] = *GetPoisoned<S4>(); 583 res.x[2] = *GetPoisoned<S4>(); 584 res.x[3] = *GetPoisoned<S4>(); 585 res.x[4] = *GetPoisoned<S4>(); 586 res.x[5] = *GetPoisoned<S4>(); 587 res.x[6] = *GetPoisoned<S4>(); 588 res.x[7] = *GetPoisoned<S4>(); 589 res.x[8] = *GetPoisoned<S4>(); 590 res.x[9] = *GetPoisoned<S4>(); 591 return res; 592 } 593 594 TEST(MemorySanitizer, LargeRet) { 595 LargeStruct a = LargeRetTest(); 596 EXPECT_POISONED(a.x[0]); 597 EXPECT_POISONED(a.x[9]); 598 } 599 600 TEST(MemorySanitizer, strerror) { 601 char *buf = strerror(EINVAL); 602 EXPECT_NOT_POISONED(strlen(buf)); 603 buf = strerror(123456); 604 EXPECT_NOT_POISONED(strlen(buf)); 605 } 606 607 TEST(MemorySanitizer, strerror_r) { 608 errno = 0; 609 char buf[1000]; 610 char *res = (char*) (size_t) strerror_r(EINVAL, buf, sizeof(buf)); 611 ASSERT_EQ(0, errno); 612 if (!res) res = buf; // POSIX version success. 613 EXPECT_NOT_POISONED(strlen(res)); 614 } 615 616 TEST(MemorySanitizer, fread) { 617 char *x = new char[32]; 618 FILE *f = fopen(FILE_TO_READ, "r"); 619 ASSERT_TRUE(f != NULL); 620 fread(x, 1, 32, f); 621 EXPECT_NOT_POISONED(x[0]); 622 EXPECT_NOT_POISONED(x[16]); 623 EXPECT_NOT_POISONED(x[31]); 624 fclose(f); 625 delete[] x; 626 } 627 628 TEST(MemorySanitizer, read) { 629 char *x = new char[32]; 630 int fd = open(FILE_TO_READ, O_RDONLY); 631 ASSERT_GT(fd, 0); 632 int sz = read(fd, x, 32); 633 ASSERT_EQ(sz, 32); 634 EXPECT_NOT_POISONED(x[0]); 635 EXPECT_NOT_POISONED(x[16]); 636 EXPECT_NOT_POISONED(x[31]); 637 close(fd); 638 delete[] x; 639 } 640 641 TEST(MemorySanitizer, pread) { 642 char *x = new char[32]; 643 int fd = open(FILE_TO_READ, O_RDONLY); 644 ASSERT_GT(fd, 0); 645 int sz = pread(fd, x, 32, 0); 646 ASSERT_EQ(sz, 32); 647 EXPECT_NOT_POISONED(x[0]); 648 EXPECT_NOT_POISONED(x[16]); 649 EXPECT_NOT_POISONED(x[31]); 650 close(fd); 651 delete[] x; 652 } 653 654 TEST(MemorySanitizer, readv) { 655 char buf[2011]; 656 struct iovec iov[2]; 657 iov[0].iov_base = buf + 1; 658 iov[0].iov_len = 5; 659 iov[1].iov_base = buf + 10; 660 iov[1].iov_len = 2000; 661 int fd = open(FILE_TO_READ, O_RDONLY); 662 ASSERT_GT(fd, 0); 663 int sz = readv(fd, iov, 2); 664 ASSERT_GE(sz, 0); 665 ASSERT_LE(sz, 5 + 2000); 666 ASSERT_GT((size_t)sz, iov[0].iov_len); 667 EXPECT_POISONED(buf[0]); 668 EXPECT_NOT_POISONED(buf[1]); 669 EXPECT_NOT_POISONED(buf[5]); 670 EXPECT_POISONED(buf[6]); 671 EXPECT_POISONED(buf[9]); 672 EXPECT_NOT_POISONED(buf[10]); 673 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 674 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 675 close(fd); 676 } 677 678 TEST(MemorySanitizer, preadv) { 679 char buf[2011]; 680 struct iovec iov[2]; 681 iov[0].iov_base = buf + 1; 682 iov[0].iov_len = 5; 683 iov[1].iov_base = buf + 10; 684 iov[1].iov_len = 2000; 685 int fd = open(FILE_TO_READ, O_RDONLY); 686 ASSERT_GT(fd, 0); 687 int sz = preadv(fd, iov, 2, 3); 688 ASSERT_GE(sz, 0); 689 ASSERT_LE(sz, 5 + 2000); 690 ASSERT_GT((size_t)sz, iov[0].iov_len); 691 EXPECT_POISONED(buf[0]); 692 EXPECT_NOT_POISONED(buf[1]); 693 EXPECT_NOT_POISONED(buf[5]); 694 EXPECT_POISONED(buf[6]); 695 EXPECT_POISONED(buf[9]); 696 EXPECT_NOT_POISONED(buf[10]); 697 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 698 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 699 close(fd); 700 } 701 702 // FIXME: fails now. 703 TEST(MemorySanitizer, DISABLED_ioctl) { 704 struct winsize ws; 705 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 706 EXPECT_NOT_POISONED(ws.ws_col); 707 } 708 709 TEST(MemorySanitizer, readlink) { 710 char *x = new char[1000]; 711 readlink(SYMLINK_TO_READ, x, 1000); 712 EXPECT_NOT_POISONED(x[0]); 713 delete [] x; 714 } 715 716 TEST(MemorySanitizer, readlinkat) { 717 char *x = new char[1000]; 718 readlinkat(AT_FDCWD, SYMLINK_TO_READ, x, 1000); 719 EXPECT_NOT_POISONED(x[0]); 720 delete[] x; 721 } 722 723 TEST(MemorySanitizer, stat) { 724 struct stat* st = new struct stat; 725 int res = stat(FILE_TO_READ, st); 726 ASSERT_EQ(0, res); 727 EXPECT_NOT_POISONED(st->st_dev); 728 EXPECT_NOT_POISONED(st->st_mode); 729 EXPECT_NOT_POISONED(st->st_size); 730 } 731 732 TEST(MemorySanitizer, fstatat) { 733 struct stat* st = new struct stat; 734 int dirfd = open(DIR_TO_READ, O_RDONLY); 735 ASSERT_GT(dirfd, 0); 736 int res = fstatat(dirfd, SUBFILE_TO_READ, st, 0); 737 ASSERT_EQ(0, res); 738 EXPECT_NOT_POISONED(st->st_dev); 739 EXPECT_NOT_POISONED(st->st_mode); 740 EXPECT_NOT_POISONED(st->st_size); 741 close(dirfd); 742 } 743 744 #if !defined(__NetBSD__) 745 TEST(MemorySanitizer, statfs) { 746 struct statfs st; 747 int res = statfs("/", &st); 748 ASSERT_EQ(0, res); 749 EXPECT_NOT_POISONED(st.f_type); 750 EXPECT_NOT_POISONED(st.f_bfree); 751 EXPECT_NOT_POISONED(st.f_namelen); 752 } 753 #endif 754 755 TEST(MemorySanitizer, statvfs) { 756 struct statvfs st; 757 int res = statvfs("/", &st); 758 ASSERT_EQ(0, res); 759 EXPECT_NOT_POISONED(st.f_bsize); 760 EXPECT_NOT_POISONED(st.f_blocks); 761 EXPECT_NOT_POISONED(st.f_bfree); 762 EXPECT_NOT_POISONED(st.f_namemax); 763 } 764 765 TEST(MemorySanitizer, fstatvfs) { 766 struct statvfs st; 767 int fd = open("/", O_RDONLY | O_DIRECTORY); 768 int res = fstatvfs(fd, &st); 769 ASSERT_EQ(0, res); 770 EXPECT_NOT_POISONED(st.f_bsize); 771 EXPECT_NOT_POISONED(st.f_blocks); 772 EXPECT_NOT_POISONED(st.f_bfree); 773 EXPECT_NOT_POISONED(st.f_namemax); 774 close(fd); 775 } 776 777 TEST(MemorySanitizer, pipe) { 778 int* pipefd = new int[2]; 779 int res = pipe(pipefd); 780 ASSERT_EQ(0, res); 781 EXPECT_NOT_POISONED(pipefd[0]); 782 EXPECT_NOT_POISONED(pipefd[1]); 783 close(pipefd[0]); 784 close(pipefd[1]); 785 } 786 787 TEST(MemorySanitizer, pipe2) { 788 int* pipefd = new int[2]; 789 int res = pipe2(pipefd, O_NONBLOCK); 790 ASSERT_EQ(0, res); 791 EXPECT_NOT_POISONED(pipefd[0]); 792 EXPECT_NOT_POISONED(pipefd[1]); 793 close(pipefd[0]); 794 close(pipefd[1]); 795 } 796 797 TEST(MemorySanitizer, socketpair) { 798 int sv[2]; 799 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 800 ASSERT_EQ(0, res); 801 EXPECT_NOT_POISONED(sv[0]); 802 EXPECT_NOT_POISONED(sv[1]); 803 close(sv[0]); 804 close(sv[1]); 805 } 806 807 TEST(MemorySanitizer, poll) { 808 int* pipefd = new int[2]; 809 int res = pipe(pipefd); 810 ASSERT_EQ(0, res); 811 812 char data = 42; 813 res = write(pipefd[1], &data, 1); 814 ASSERT_EQ(1, res); 815 816 pollfd fds[2]; 817 fds[0].fd = pipefd[0]; 818 fds[0].events = POLLIN; 819 fds[1].fd = pipefd[1]; 820 fds[1].events = POLLIN; 821 res = poll(fds, 2, 500); 822 ASSERT_EQ(1, res); 823 EXPECT_NOT_POISONED(fds[0].revents); 824 EXPECT_NOT_POISONED(fds[1].revents); 825 826 close(pipefd[0]); 827 close(pipefd[1]); 828 } 829 830 #if !defined (__FreeBSD__) && !defined (__NetBSD__) 831 TEST(MemorySanitizer, ppoll) { 832 int* pipefd = new int[2]; 833 int res = pipe(pipefd); 834 ASSERT_EQ(0, res); 835 836 char data = 42; 837 res = write(pipefd[1], &data, 1); 838 ASSERT_EQ(1, res); 839 840 pollfd fds[2]; 841 fds[0].fd = pipefd[0]; 842 fds[0].events = POLLIN; 843 fds[1].fd = pipefd[1]; 844 fds[1].events = POLLIN; 845 sigset_t ss; 846 sigemptyset(&ss); 847 res = ppoll(fds, 2, NULL, &ss); 848 ASSERT_EQ(1, res); 849 EXPECT_NOT_POISONED(fds[0].revents); 850 EXPECT_NOT_POISONED(fds[1].revents); 851 852 close(pipefd[0]); 853 close(pipefd[1]); 854 } 855 #endif 856 857 TEST(MemorySanitizer, poll_positive) { 858 int* pipefd = new int[2]; 859 int res = pipe(pipefd); 860 ASSERT_EQ(0, res); 861 862 pollfd fds[2]; 863 fds[0].fd = pipefd[0]; 864 fds[0].events = POLLIN; 865 // fds[1].fd uninitialized 866 fds[1].events = POLLIN; 867 EXPECT_UMR(poll(fds, 2, 0)); 868 869 close(pipefd[0]); 870 close(pipefd[1]); 871 } 872 873 TEST(MemorySanitizer, bind_getsockname) { 874 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 875 876 struct sockaddr_in sai; 877 memset(&sai, 0, sizeof(sai)); 878 sai.sin_family = AF_UNIX; 879 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 880 881 ASSERT_EQ(0, res); 882 char buf[200]; 883 socklen_t addrlen; 884 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 885 886 addrlen = sizeof(buf); 887 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 888 EXPECT_NOT_POISONED(addrlen); 889 EXPECT_NOT_POISONED(buf[0]); 890 EXPECT_NOT_POISONED(buf[addrlen - 1]); 891 EXPECT_POISONED(buf[addrlen]); 892 close(sock); 893 } 894 895 class SocketAddr { 896 public: 897 virtual ~SocketAddr() = default; 898 virtual struct sockaddr *ptr() = 0; 899 virtual size_t size() const = 0; 900 901 template <class... Args> 902 static std::unique_ptr<SocketAddr> Create(int family, Args... args); 903 }; 904 905 class SocketAddr4 : public SocketAddr { 906 public: 907 SocketAddr4() { EXPECT_POISONED(sai_); } 908 explicit SocketAddr4(uint16_t port) { 909 memset(&sai_, 0, sizeof(sai_)); 910 sai_.sin_family = AF_INET; 911 sai_.sin_port = port; 912 sai_.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 913 } 914 915 sockaddr *ptr() override { return reinterpret_cast<sockaddr *>(&sai_); } 916 917 size_t size() const override { return sizeof(sai_); } 918 919 private: 920 sockaddr_in sai_; 921 }; 922 923 class SocketAddr6 : public SocketAddr { 924 public: 925 SocketAddr6() { EXPECT_POISONED(sai_); } 926 explicit SocketAddr6(uint16_t port) { 927 memset(&sai_, 0, sizeof(sai_)); 928 sai_.sin6_family = AF_INET6; 929 sai_.sin6_port = port; 930 sai_.sin6_addr = in6addr_loopback; 931 } 932 933 sockaddr *ptr() override { return reinterpret_cast<sockaddr *>(&sai_); } 934 935 size_t size() const override { return sizeof(sai_); } 936 937 private: 938 sockaddr_in6 sai_; 939 }; 940 941 template <class... Args> 942 std::unique_ptr<SocketAddr> SocketAddr::Create(int family, Args... args) { 943 if (family == AF_INET) 944 return std::unique_ptr<SocketAddr>(new SocketAddr4(args...)); 945 return std::unique_ptr<SocketAddr>(new SocketAddr6(args...)); 946 } 947 948 class MemorySanitizerIpTest : public ::testing::TestWithParam<int> { 949 public: 950 void SetUp() override { 951 ASSERT_TRUE(GetParam() == AF_INET || GetParam() == AF_INET6); 952 } 953 954 template <class... Args> 955 std::unique_ptr<SocketAddr> CreateSockAddr(Args... args) const { 956 return SocketAddr::Create(GetParam(), args...); 957 } 958 959 int CreateSocket(int socket_type) const { 960 return socket(GetParam(), socket_type, 0); 961 } 962 }; 963 964 std::vector<int> GetAvailableIpSocketFamilies() { 965 std::vector<int> result; 966 967 for (int i : {AF_INET, AF_INET6}) { 968 int s = socket(i, SOCK_STREAM, 0); 969 if (s > 0) { 970 auto sai = SocketAddr::Create(i, 0); 971 if (bind(s, sai->ptr(), sai->size()) == 0) result.push_back(i); 972 close(s); 973 } 974 } 975 976 return result; 977 } 978 979 INSTANTIATE_TEST_SUITE_P(IpTests, MemorySanitizerIpTest, 980 ::testing::ValuesIn(GetAvailableIpSocketFamilies())); 981 982 TEST_P(MemorySanitizerIpTest, accept) { 983 int listen_socket = CreateSocket(SOCK_STREAM); 984 ASSERT_LT(0, listen_socket); 985 986 auto sai = CreateSockAddr(0); 987 int res = bind(listen_socket, sai->ptr(), sai->size()); 988 ASSERT_EQ(0, res); 989 990 res = listen(listen_socket, 1); 991 ASSERT_EQ(0, res); 992 993 socklen_t sz = sai->size(); 994 res = getsockname(listen_socket, sai->ptr(), &sz); 995 ASSERT_EQ(0, res); 996 ASSERT_EQ(sai->size(), sz); 997 998 int connect_socket = CreateSocket(SOCK_STREAM); 999 ASSERT_LT(0, connect_socket); 1000 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 1001 ASSERT_EQ(0, res); 1002 res = connect(connect_socket, sai->ptr(), sai->size()); 1003 // On FreeBSD this connection completes immediately. 1004 if (res != 0) { 1005 ASSERT_EQ(-1, res); 1006 ASSERT_EQ(EINPROGRESS, errno); 1007 } 1008 1009 __msan_poison(sai->ptr(), sai->size()); 1010 int new_sock = accept(listen_socket, sai->ptr(), &sz); 1011 ASSERT_LT(0, new_sock); 1012 ASSERT_EQ(sai->size(), sz); 1013 EXPECT_NOT_POISONED2(sai->ptr(), sai->size()); 1014 1015 __msan_poison(sai->ptr(), sai->size()); 1016 res = getpeername(new_sock, sai->ptr(), &sz); 1017 ASSERT_EQ(0, res); 1018 ASSERT_EQ(sai->size(), sz); 1019 EXPECT_NOT_POISONED2(sai->ptr(), sai->size()); 1020 1021 close(new_sock); 1022 close(connect_socket); 1023 close(listen_socket); 1024 } 1025 1026 TEST_P(MemorySanitizerIpTest, recvmsg) { 1027 int server_socket = CreateSocket(SOCK_DGRAM); 1028 ASSERT_LT(0, server_socket); 1029 1030 auto sai = CreateSockAddr(0); 1031 int res = bind(server_socket, sai->ptr(), sai->size()); 1032 ASSERT_EQ(0, res); 1033 1034 socklen_t sz = sai->size(); 1035 res = getsockname(server_socket, sai->ptr(), &sz); 1036 ASSERT_EQ(0, res); 1037 ASSERT_EQ(sai->size(), sz); 1038 1039 int client_socket = CreateSocket(SOCK_DGRAM); 1040 ASSERT_LT(0, client_socket); 1041 1042 auto client_sai = CreateSockAddr(0); 1043 res = bind(client_socket, client_sai->ptr(), client_sai->size()); 1044 ASSERT_EQ(0, res); 1045 1046 sz = client_sai->size(); 1047 res = getsockname(client_socket, client_sai->ptr(), &sz); 1048 ASSERT_EQ(0, res); 1049 ASSERT_EQ(client_sai->size(), sz); 1050 1051 const char *s = "message text"; 1052 struct iovec iov; 1053 iov.iov_base = (void *)s; 1054 iov.iov_len = strlen(s) + 1; 1055 struct msghdr msg; 1056 memset(&msg, 0, sizeof(msg)); 1057 msg.msg_name = sai->ptr(); 1058 msg.msg_namelen = sai->size(); 1059 msg.msg_iov = &iov; 1060 msg.msg_iovlen = 1; 1061 res = sendmsg(client_socket, &msg, 0); 1062 ASSERT_LT(0, res); 1063 1064 char buf[1000]; 1065 struct iovec recv_iov; 1066 recv_iov.iov_base = (void *)&buf; 1067 recv_iov.iov_len = sizeof(buf); 1068 auto recv_sai = CreateSockAddr(); 1069 struct msghdr recv_msg; 1070 memset(&recv_msg, 0, sizeof(recv_msg)); 1071 recv_msg.msg_name = recv_sai->ptr(); 1072 recv_msg.msg_namelen = recv_sai->size(); 1073 recv_msg.msg_iov = &recv_iov; 1074 recv_msg.msg_iovlen = 1; 1075 res = recvmsg(server_socket, &recv_msg, 0); 1076 ASSERT_LT(0, res); 1077 1078 ASSERT_EQ(recv_sai->size(), recv_msg.msg_namelen); 1079 EXPECT_NOT_POISONED2(recv_sai->ptr(), recv_sai->size()); 1080 EXPECT_STREQ(s, buf); 1081 1082 close(server_socket); 1083 close(client_socket); 1084 } 1085 1086 #define EXPECT_HOSTENT_NOT_POISONED(he) \ 1087 do { \ 1088 EXPECT_NOT_POISONED(*(he)); \ 1089 ASSERT_NE((void *)0, (he)->h_name); \ 1090 ASSERT_NE((void *)0, (he)->h_aliases); \ 1091 ASSERT_NE((void *)0, (he)->h_addr_list); \ 1092 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 1093 char **p = (he)->h_aliases; \ 1094 while (*p) { \ 1095 EXPECT_NOT_POISONED(strlen(*p)); \ 1096 ++p; \ 1097 } \ 1098 char **q = (he)->h_addr_list; \ 1099 while (*q) { \ 1100 EXPECT_NOT_POISONED(*q[0]); \ 1101 ++q; \ 1102 } \ 1103 EXPECT_NOT_POISONED(*q); \ 1104 } while (0) 1105 1106 TEST(MemorySanitizer, gethostent) { 1107 sethostent(0); 1108 struct hostent *he = gethostent(); 1109 ASSERT_NE((void *)NULL, he); 1110 EXPECT_HOSTENT_NOT_POISONED(he); 1111 } 1112 1113 #ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 1114 1115 TEST(MemorySanitizer, gethostbyname) { 1116 struct hostent *he = gethostbyname("localhost"); 1117 ASSERT_NE((void *)NULL, he); 1118 EXPECT_HOSTENT_NOT_POISONED(he); 1119 } 1120 1121 #endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 1122 1123 TEST(MemorySanitizer, getaddrinfo) { 1124 struct addrinfo *ai; 1125 struct addrinfo hints; 1126 memset(&hints, 0, sizeof(hints)); 1127 hints.ai_family = AF_INET; 1128 int res = getaddrinfo("localhost", NULL, &hints, &ai); 1129 ASSERT_EQ(0, res); 1130 EXPECT_NOT_POISONED(*ai); 1131 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 1132 EXPECT_NOT_POISONED(*(sockaddr_in *)ai->ai_addr); 1133 } 1134 1135 TEST(MemorySanitizer, getnameinfo) { 1136 struct sockaddr_in sai; 1137 memset(&sai, 0, sizeof(sai)); 1138 sai.sin_family = AF_INET; 1139 sai.sin_port = 80; 1140 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 1141 char host[500]; 1142 char serv[500]; 1143 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 1144 sizeof(host), serv, sizeof(serv), 0); 1145 ASSERT_EQ(0, res); 1146 EXPECT_NOT_POISONED(host[0]); 1147 EXPECT_POISONED(host[sizeof(host) - 1]); 1148 1149 ASSERT_NE(0U, strlen(host)); 1150 EXPECT_NOT_POISONED(serv[0]); 1151 EXPECT_POISONED(serv[sizeof(serv) - 1]); 1152 ASSERT_NE(0U, strlen(serv)); 1153 } 1154 1155 TEST(MemorySanitizer, gethostbyname2) { 1156 struct hostent *he = gethostbyname2("localhost", AF_INET); 1157 ASSERT_NE((void *)NULL, he); 1158 EXPECT_HOSTENT_NOT_POISONED(he); 1159 } 1160 1161 TEST(MemorySanitizer, gethostbyaddr) { 1162 in_addr_t addr = inet_addr("127.0.0.1"); 1163 EXPECT_NOT_POISONED(addr); 1164 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 1165 ASSERT_NE((void *)NULL, he); 1166 EXPECT_HOSTENT_NOT_POISONED(he); 1167 } 1168 1169 #if defined(__GLIBC__) || defined(__FreeBSD__) 1170 TEST(MemorySanitizer, gethostent_r) { 1171 sethostent(0); 1172 char buf[2000]; 1173 struct hostent he; 1174 struct hostent *result; 1175 int err; 1176 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 1177 ASSERT_EQ(0, res); 1178 EXPECT_NOT_POISONED(result); 1179 ASSERT_NE((void *)NULL, result); 1180 EXPECT_HOSTENT_NOT_POISONED(result); 1181 EXPECT_NOT_POISONED(err); 1182 } 1183 #endif 1184 1185 #if !defined(__NetBSD__) 1186 TEST(MemorySanitizer, gethostbyname_r) { 1187 char buf[2000]; 1188 struct hostent he; 1189 struct hostent *result; 1190 int err; 1191 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 1192 ASSERT_EQ(0, res); 1193 EXPECT_NOT_POISONED(result); 1194 ASSERT_NE((void *)NULL, result); 1195 EXPECT_HOSTENT_NOT_POISONED(result); 1196 EXPECT_NOT_POISONED(err); 1197 } 1198 #endif 1199 1200 #if !defined(__NetBSD__) 1201 TEST(MemorySanitizer, gethostbyname_r_bad_host_name) { 1202 char buf[2000]; 1203 struct hostent he; 1204 struct hostent *result; 1205 int err; 1206 int res = gethostbyname_r("bad-host-name", &he, buf, sizeof(buf), &result, &err); 1207 ASSERT_EQ((struct hostent *)0, result); 1208 EXPECT_NOT_POISONED(err); 1209 } 1210 #endif 1211 1212 #if !defined(__NetBSD__) 1213 TEST(MemorySanitizer, gethostbyname_r_erange) { 1214 char buf[5]; 1215 struct hostent he; 1216 struct hostent *result; 1217 int err; 1218 gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 1219 ASSERT_EQ(ERANGE, errno); 1220 EXPECT_NOT_POISONED(err); 1221 } 1222 #endif 1223 1224 #if !defined(__NetBSD__) 1225 TEST(MemorySanitizer, gethostbyname2_r) { 1226 char buf[2000]; 1227 struct hostent he; 1228 struct hostent *result; 1229 int err; 1230 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 1231 &result, &err); 1232 ASSERT_EQ(0, res); 1233 EXPECT_NOT_POISONED(result); 1234 ASSERT_NE((void *)NULL, result); 1235 EXPECT_HOSTENT_NOT_POISONED(result); 1236 EXPECT_NOT_POISONED(err); 1237 } 1238 #endif 1239 1240 #if !defined(__NetBSD__) 1241 TEST(MemorySanitizer, gethostbyaddr_r) { 1242 char buf[2000]; 1243 struct hostent he; 1244 struct hostent *result; 1245 int err; 1246 in_addr_t addr = inet_addr("127.0.0.1"); 1247 EXPECT_NOT_POISONED(addr); 1248 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 1249 &result, &err); 1250 ASSERT_EQ(0, res); 1251 EXPECT_NOT_POISONED(result); 1252 ASSERT_NE((void *)NULL, result); 1253 EXPECT_HOSTENT_NOT_POISONED(result); 1254 EXPECT_NOT_POISONED(err); 1255 } 1256 #endif 1257 1258 TEST(MemorySanitizer, getsockopt) { 1259 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 1260 struct linger l[2]; 1261 socklen_t sz = sizeof(l[0]); 1262 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 1263 ASSERT_EQ(0, res); 1264 ASSERT_EQ(sizeof(l[0]), sz); 1265 EXPECT_NOT_POISONED(l[0]); 1266 EXPECT_POISONED(*(char *)(l + 1)); 1267 } 1268 1269 TEST(MemorySanitizer, getcwd) { 1270 char path[PATH_MAX + 1]; 1271 char* res = getcwd(path, sizeof(path)); 1272 ASSERT_TRUE(res != NULL); 1273 EXPECT_NOT_POISONED(path[0]); 1274 } 1275 1276 TEST(MemorySanitizer, getcwd_gnu) { 1277 char* res = getcwd(NULL, 0); 1278 ASSERT_TRUE(res != NULL); 1279 EXPECT_NOT_POISONED(res[0]); 1280 free(res); 1281 } 1282 1283 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1284 TEST(MemorySanitizer, get_current_dir_name) { 1285 char* res = get_current_dir_name(); 1286 ASSERT_TRUE(res != NULL); 1287 EXPECT_NOT_POISONED(res[0]); 1288 free(res); 1289 } 1290 #endif 1291 1292 TEST(MemorySanitizer, shmctl) { 1293 int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT); 1294 ASSERT_GT(id, -1); 1295 1296 struct shmid_ds ds; 1297 int res = shmctl(id, IPC_STAT, &ds); 1298 ASSERT_GT(res, -1); 1299 EXPECT_NOT_POISONED(ds); 1300 1301 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1302 struct shminfo si; 1303 res = shmctl(id, IPC_INFO, (struct shmid_ds *)&si); 1304 ASSERT_GT(res, -1); 1305 EXPECT_NOT_POISONED(si); 1306 1307 struct shm_info s_i; 1308 res = shmctl(id, SHM_INFO, (struct shmid_ds *)&s_i); 1309 ASSERT_GT(res, -1); 1310 EXPECT_NOT_POISONED(s_i); 1311 #endif 1312 1313 res = shmctl(id, IPC_RMID, 0); 1314 ASSERT_GT(res, -1); 1315 } 1316 1317 TEST(MemorySanitizer, shmat) { 1318 const int kShmSize = 4096; 1319 void *mapping_start = mmap(NULL, kShmSize + SHMLBA, PROT_READ | PROT_WRITE, 1320 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); 1321 ASSERT_NE(MAP_FAILED, mapping_start); 1322 1323 void *p = (void *)(((unsigned long)mapping_start + SHMLBA - 1) / SHMLBA * SHMLBA); 1324 // p is now SHMLBA-aligned; 1325 1326 ((char *)p)[10] = *GetPoisoned<U1>(); 1327 ((char *)p)[kShmSize - 1] = *GetPoisoned<U1>(); 1328 1329 int res = munmap(mapping_start, kShmSize + SHMLBA); 1330 ASSERT_EQ(0, res); 1331 1332 int id = shmget(IPC_PRIVATE, kShmSize, 0644 | IPC_CREAT); 1333 ASSERT_GT(id, -1); 1334 1335 void *q = shmat(id, p, 0); 1336 ASSERT_EQ(p, q); 1337 1338 EXPECT_NOT_POISONED(((char *)q)[0]); 1339 EXPECT_NOT_POISONED(((char *)q)[10]); 1340 EXPECT_NOT_POISONED(((char *)q)[kShmSize - 1]); 1341 1342 res = shmdt(q); 1343 ASSERT_EQ(0, res); 1344 1345 res = shmctl(id, IPC_RMID, 0); 1346 ASSERT_GT(res, -1); 1347 } 1348 1349 #ifdef __GLIBC__ 1350 TEST(MemorySanitizer, random_r) { 1351 int32_t x; 1352 char z[64]; 1353 memset(z, 0, sizeof(z)); 1354 1355 struct random_data buf; 1356 memset(&buf, 0, sizeof(buf)); 1357 1358 int res = initstate_r(0, z, sizeof(z), &buf); 1359 ASSERT_EQ(0, res); 1360 1361 res = random_r(&buf, &x); 1362 ASSERT_EQ(0, res); 1363 EXPECT_NOT_POISONED(x); 1364 } 1365 #endif 1366 1367 TEST(MemorySanitizer, confstr) { 1368 char buf[3]; 1369 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1370 ASSERT_GT(res, sizeof(buf)); 1371 EXPECT_NOT_POISONED(buf[0]); 1372 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1373 1374 char buf2[1000]; 1375 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1376 ASSERT_LT(res, sizeof(buf2)); 1377 EXPECT_NOT_POISONED(buf2[0]); 1378 EXPECT_NOT_POISONED(buf2[res - 1]); 1379 EXPECT_POISONED(buf2[res]); 1380 ASSERT_EQ(res, strlen(buf2) + 1); 1381 } 1382 1383 TEST(MemorySanitizer, opendir) { 1384 DIR *dir = opendir("."); 1385 closedir(dir); 1386 1387 char name[10] = "."; 1388 __msan_poison(name, sizeof(name)); 1389 EXPECT_UMR(dir = opendir(name)); 1390 closedir(dir); 1391 } 1392 1393 TEST(MemorySanitizer, readdir) { 1394 DIR *dir = opendir("."); 1395 struct dirent *d = readdir(dir); 1396 ASSERT_TRUE(d != NULL); 1397 EXPECT_NOT_POISONED(d->d_name[0]); 1398 closedir(dir); 1399 } 1400 1401 TEST(MemorySanitizer, readdir_r) { 1402 DIR *dir = opendir("."); 1403 struct dirent d; 1404 struct dirent *pd; 1405 int res = readdir_r(dir, &d, &pd); 1406 ASSERT_EQ(0, res); 1407 EXPECT_NOT_POISONED(pd); 1408 EXPECT_NOT_POISONED(d.d_name[0]); 1409 closedir(dir); 1410 } 1411 1412 TEST(MemorySanitizer, realpath) { 1413 const char* relpath = "."; 1414 char path[PATH_MAX + 1]; 1415 char* res = realpath(relpath, path); 1416 ASSERT_TRUE(res != NULL); 1417 EXPECT_NOT_POISONED(path[0]); 1418 } 1419 1420 TEST(MemorySanitizer, realpath_null) { 1421 const char* relpath = "."; 1422 char* res = realpath(relpath, NULL); 1423 printf("%d, %s\n", errno, strerror(errno)); 1424 ASSERT_TRUE(res != NULL); 1425 EXPECT_NOT_POISONED(res[0]); 1426 free(res); 1427 } 1428 1429 #ifdef __GLIBC__ 1430 TEST(MemorySanitizer, canonicalize_file_name) { 1431 const char* relpath = "."; 1432 char* res = canonicalize_file_name(relpath); 1433 ASSERT_TRUE(res != NULL); 1434 EXPECT_NOT_POISONED(res[0]); 1435 free(res); 1436 } 1437 #endif 1438 1439 extern char **environ; 1440 1441 TEST(MemorySanitizer, setenv) { 1442 setenv("AAA", "BBB", 1); 1443 for (char **envp = environ; *envp; ++envp) { 1444 EXPECT_NOT_POISONED(*envp); 1445 EXPECT_NOT_POISONED(*envp[0]); 1446 } 1447 } 1448 1449 TEST(MemorySanitizer, putenv) { 1450 char s[] = "AAA=BBB"; 1451 putenv(s); 1452 for (char **envp = environ; *envp; ++envp) { 1453 EXPECT_NOT_POISONED(*envp); 1454 EXPECT_NOT_POISONED(*envp[0]); 1455 } 1456 } 1457 1458 TEST(MemorySanitizer, memcpy) { 1459 char* x = new char[2]; 1460 char* y = new char[2]; 1461 x[0] = 1; 1462 x[1] = *GetPoisoned<char>(); 1463 memcpy(y, x, 2); 1464 EXPECT_NOT_POISONED(y[0]); 1465 EXPECT_POISONED(y[1]); 1466 } 1467 1468 void TestUnalignedMemcpy(unsigned left, unsigned right, bool src_is_aligned, 1469 bool src_is_poisoned, bool dst_is_poisoned) { 1470 fprintf(stderr, "%s(%d, %d, %d, %d, %d)\n", __func__, left, right, 1471 src_is_aligned, src_is_poisoned, dst_is_poisoned); 1472 1473 const unsigned sz = 20; 1474 U4 dst_origin, src_origin; 1475 char *dst = (char *)malloc(sz); 1476 if (dst_is_poisoned) 1477 dst_origin = __msan_get_origin(dst); 1478 else 1479 memset(dst, 0, sz); 1480 1481 char *src = (char *)malloc(sz); 1482 if (src_is_poisoned) 1483 src_origin = __msan_get_origin(src); 1484 else 1485 memset(src, 0, sz); 1486 1487 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); 1488 1489 for (unsigned i = 0; i < (left & (~3U)); ++i) 1490 if (dst_is_poisoned) 1491 EXPECT_POISONED_O(dst[i], dst_origin); 1492 else 1493 EXPECT_NOT_POISONED(dst[i]); 1494 1495 for (unsigned i = 0; i < (right & (~3U)); ++i) 1496 if (dst_is_poisoned) 1497 EXPECT_POISONED_O(dst[sz - i - 1], dst_origin); 1498 else 1499 EXPECT_NOT_POISONED(dst[sz - i - 1]); 1500 1501 for (unsigned i = left; i < sz - right; ++i) 1502 if (src_is_poisoned) 1503 EXPECT_POISONED_O(dst[i], src_origin); 1504 else 1505 EXPECT_NOT_POISONED(dst[i]); 1506 1507 free(dst); 1508 free(src); 1509 } 1510 1511 TEST(MemorySanitizer, memcpy_unaligned) { 1512 for (int i = 0; i < 10; ++i) 1513 for (int j = 0; j < 10; ++j) 1514 for (int aligned = 0; aligned < 2; ++aligned) 1515 for (int srcp = 0; srcp < 2; ++srcp) 1516 for (int dstp = 0; dstp < 2; ++dstp) 1517 TestUnalignedMemcpy(i, j, aligned, srcp, dstp); 1518 } 1519 1520 TEST(MemorySanitizer, memmove) { 1521 char* x = new char[2]; 1522 char* y = new char[2]; 1523 x[0] = 1; 1524 x[1] = *GetPoisoned<char>(); 1525 memmove(y, x, 2); 1526 EXPECT_NOT_POISONED(y[0]); 1527 EXPECT_POISONED(y[1]); 1528 } 1529 1530 TEST(MemorySanitizer, memccpy_nomatch) { 1531 char* x = new char[5]; 1532 char* y = new char[5]; 1533 strcpy(x, "abc"); 1534 memccpy(y, x, 'd', 4); 1535 EXPECT_NOT_POISONED(y[0]); 1536 EXPECT_NOT_POISONED(y[1]); 1537 EXPECT_NOT_POISONED(y[2]); 1538 EXPECT_NOT_POISONED(y[3]); 1539 EXPECT_POISONED(y[4]); 1540 delete[] x; 1541 delete[] y; 1542 } 1543 1544 TEST(MemorySanitizer, memccpy_match) { 1545 char* x = new char[5]; 1546 char* y = new char[5]; 1547 strcpy(x, "abc"); 1548 memccpy(y, x, 'b', 4); 1549 EXPECT_NOT_POISONED(y[0]); 1550 EXPECT_NOT_POISONED(y[1]); 1551 EXPECT_POISONED(y[2]); 1552 EXPECT_POISONED(y[3]); 1553 EXPECT_POISONED(y[4]); 1554 delete[] x; 1555 delete[] y; 1556 } 1557 1558 TEST(MemorySanitizer, memccpy_nomatch_positive) { 1559 char* x = new char[5]; 1560 char* y = new char[5]; 1561 strcpy(x, "abc"); 1562 EXPECT_UMR(memccpy(y, x, 'd', 5)); 1563 break_optimization(y); 1564 delete[] x; 1565 delete[] y; 1566 } 1567 1568 TEST(MemorySanitizer, memccpy_match_positive) { 1569 char* x = new char[5]; 1570 char* y = new char[5]; 1571 x[0] = 'a'; 1572 x[2] = 'b'; 1573 EXPECT_UMR(memccpy(y, x, 'b', 5)); 1574 break_optimization(y); 1575 delete[] x; 1576 delete[] y; 1577 } 1578 1579 TEST(MemorySanitizer, bcopy) { 1580 char* x = new char[2]; 1581 char* y = new char[2]; 1582 x[0] = 1; 1583 x[1] = *GetPoisoned<char>(); 1584 bcopy(x, y, 2); 1585 EXPECT_NOT_POISONED(y[0]); 1586 EXPECT_POISONED(y[1]); 1587 } 1588 1589 TEST(MemorySanitizer, strdup) { 1590 char buf[4] = "abc"; 1591 __msan_poison(buf + 2, sizeof(*buf)); 1592 char *x = strdup(buf); 1593 EXPECT_NOT_POISONED(x[0]); 1594 EXPECT_NOT_POISONED(x[1]); 1595 EXPECT_POISONED(x[2]); 1596 EXPECT_NOT_POISONED(x[3]); 1597 free(x); 1598 } 1599 1600 TEST(MemorySanitizer, strndup) { 1601 char buf[4] = "abc"; 1602 __msan_poison(buf + 2, sizeof(*buf)); 1603 char *x; 1604 EXPECT_UMR(x = strndup(buf, 3)); 1605 EXPECT_NOT_POISONED(x[0]); 1606 EXPECT_NOT_POISONED(x[1]); 1607 EXPECT_POISONED(x[2]); 1608 EXPECT_NOT_POISONED(x[3]); 1609 free(x); 1610 // Check handling of non 0 terminated strings. 1611 buf[3] = 'z'; 1612 __msan_poison(buf + 3, sizeof(*buf)); 1613 EXPECT_UMR(x = strndup(buf + 3, 1)); 1614 EXPECT_POISONED(x[0]); 1615 EXPECT_NOT_POISONED(x[1]); 1616 free(x); 1617 } 1618 1619 TEST(MemorySanitizer, strndup_short) { 1620 char buf[4] = "abc"; 1621 __msan_poison(buf + 1, sizeof(*buf)); 1622 __msan_poison(buf + 2, sizeof(*buf)); 1623 char *x; 1624 EXPECT_UMR(x = strndup(buf, 2)); 1625 EXPECT_NOT_POISONED(x[0]); 1626 EXPECT_POISONED(x[1]); 1627 EXPECT_NOT_POISONED(x[2]); 1628 free(x); 1629 } 1630 1631 1632 template<class T, int size> 1633 void TestOverlapMemmove() { 1634 T *x = new T[size]; 1635 ASSERT_GE(size, 3); 1636 x[2] = 0; 1637 memmove(x, x + 1, (size - 1) * sizeof(T)); 1638 EXPECT_NOT_POISONED(x[1]); 1639 EXPECT_POISONED(x[0]); 1640 EXPECT_POISONED(x[2]); 1641 delete [] x; 1642 } 1643 1644 TEST(MemorySanitizer, overlap_memmove) { 1645 TestOverlapMemmove<U1, 10>(); 1646 TestOverlapMemmove<U1, 1000>(); 1647 TestOverlapMemmove<U8, 4>(); 1648 TestOverlapMemmove<U8, 1000>(); 1649 } 1650 1651 TEST(MemorySanitizer, strcpy) { 1652 char* x = new char[3]; 1653 char* y = new char[3]; 1654 x[0] = 'a'; 1655 x[1] = *GetPoisoned<char>(1, 1); 1656 x[2] = 0; 1657 strcpy(y, x); 1658 EXPECT_NOT_POISONED(y[0]); 1659 EXPECT_POISONED(y[1]); 1660 EXPECT_NOT_POISONED(y[2]); 1661 } 1662 1663 TEST(MemorySanitizer, strncpy) { 1664 char* x = new char[3]; 1665 char* y = new char[5]; 1666 x[0] = 'a'; 1667 x[1] = *GetPoisoned<char>(1, 1); 1668 x[2] = '\0'; 1669 strncpy(y, x, 4); 1670 EXPECT_NOT_POISONED(y[0]); 1671 EXPECT_POISONED(y[1]); 1672 EXPECT_NOT_POISONED(y[2]); 1673 EXPECT_NOT_POISONED(y[3]); 1674 EXPECT_POISONED(y[4]); 1675 } 1676 1677 TEST(MemorySanitizer, stpcpy) { 1678 char* x = new char[3]; 1679 char* y = new char[3]; 1680 x[0] = 'a'; 1681 x[1] = *GetPoisoned<char>(1, 1); 1682 x[2] = 0; 1683 char *res = stpcpy(y, x); 1684 ASSERT_EQ(res, y + 2); 1685 EXPECT_NOT_POISONED(y[0]); 1686 EXPECT_POISONED(y[1]); 1687 EXPECT_NOT_POISONED(y[2]); 1688 } 1689 1690 TEST(MemorySanitizer, strcat) { 1691 char a[10]; 1692 char b[] = "def"; 1693 strcpy(a, "abc"); 1694 __msan_poison(b + 1, 1); 1695 strcat(a, b); 1696 EXPECT_NOT_POISONED(a[3]); 1697 EXPECT_POISONED(a[4]); 1698 EXPECT_NOT_POISONED(a[5]); 1699 EXPECT_NOT_POISONED(a[6]); 1700 EXPECT_POISONED(a[7]); 1701 } 1702 1703 TEST(MemorySanitizer, strncat) { 1704 char a[10]; 1705 char b[] = "def"; 1706 strcpy(a, "abc"); 1707 __msan_poison(b + 1, 1); 1708 strncat(a, b, 5); 1709 EXPECT_NOT_POISONED(a[3]); 1710 EXPECT_POISONED(a[4]); 1711 EXPECT_NOT_POISONED(a[5]); 1712 EXPECT_NOT_POISONED(a[6]); 1713 EXPECT_POISONED(a[7]); 1714 } 1715 1716 TEST(MemorySanitizer, strncat_overflow) { 1717 char a[10]; 1718 char b[] = "def"; 1719 strcpy(a, "abc"); 1720 __msan_poison(b + 1, 1); 1721 strncat(a, b, 2); 1722 EXPECT_NOT_POISONED(a[3]); 1723 EXPECT_POISONED(a[4]); 1724 EXPECT_NOT_POISONED(a[5]); 1725 EXPECT_POISONED(a[6]); 1726 EXPECT_POISONED(a[7]); 1727 } 1728 1729 TEST(MemorySanitizer, wcscat) { 1730 wchar_t a[10]; 1731 wchar_t b[] = L"def"; 1732 wcscpy(a, L"abc"); 1733 1734 wcscat(a, b); 1735 EXPECT_EQ(6U, wcslen(a)); 1736 EXPECT_POISONED(a[7]); 1737 1738 a[3] = 0; 1739 __msan_poison(b + 1, sizeof(wchar_t)); 1740 EXPECT_UMR(wcscat(a, b)); 1741 1742 __msan_unpoison(b + 1, sizeof(wchar_t)); 1743 __msan_poison(a + 2, sizeof(wchar_t)); 1744 EXPECT_UMR(wcscat(a, b)); 1745 } 1746 1747 TEST(MemorySanitizer, wcsncat) { 1748 wchar_t a[10]; 1749 wchar_t b[] = L"def"; 1750 wcscpy(a, L"abc"); 1751 1752 wcsncat(a, b, 5); 1753 EXPECT_EQ(6U, wcslen(a)); 1754 EXPECT_POISONED(a[7]); 1755 1756 a[3] = 0; 1757 __msan_poison(a + 4, sizeof(wchar_t) * 6); 1758 wcsncat(a, b, 2); 1759 EXPECT_EQ(5U, wcslen(a)); 1760 EXPECT_POISONED(a[6]); 1761 1762 a[3] = 0; 1763 __msan_poison(b + 1, sizeof(wchar_t)); 1764 EXPECT_UMR(wcsncat(a, b, 2)); 1765 1766 __msan_unpoison(b + 1, sizeof(wchar_t)); 1767 __msan_poison(a + 2, sizeof(wchar_t)); 1768 EXPECT_UMR(wcsncat(a, b, 2)); 1769 } 1770 1771 #define TEST_STRTO_INT(func_name, char_type, str_prefix) \ 1772 TEST(MemorySanitizer, func_name) { \ 1773 char_type *e; \ 1774 EXPECT_EQ(1U, func_name(str_prefix##"1", &e, 10)); \ 1775 EXPECT_NOT_POISONED((S8)e); \ 1776 } 1777 1778 #define TEST_STRTO_FLOAT(func_name, char_type, str_prefix) \ 1779 TEST(MemorySanitizer, func_name) { \ 1780 char_type *e; \ 1781 EXPECT_NE(0, func_name(str_prefix##"1.5", &e)); \ 1782 EXPECT_NOT_POISONED((S8)e); \ 1783 } 1784 1785 #define TEST_STRTO_FLOAT_LOC(func_name, char_type, str_prefix) \ 1786 TEST(MemorySanitizer, func_name) { \ 1787 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \ 1788 char_type *e; \ 1789 EXPECT_NE(0, func_name(str_prefix##"1.5", &e, loc)); \ 1790 EXPECT_NOT_POISONED((S8)e); \ 1791 freelocale(loc); \ 1792 } 1793 1794 #define TEST_STRTO_INT_LOC(func_name, char_type, str_prefix) \ 1795 TEST(MemorySanitizer, func_name) { \ 1796 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \ 1797 char_type *e; \ 1798 ASSERT_EQ(1U, func_name(str_prefix##"1", &e, 10, loc)); \ 1799 EXPECT_NOT_POISONED((S8)e); \ 1800 freelocale(loc); \ 1801 } 1802 1803 TEST_STRTO_INT(strtol, char, ) 1804 TEST_STRTO_INT(strtoll, char, ) 1805 TEST_STRTO_INT(strtoul, char, ) 1806 TEST_STRTO_INT(strtoull, char, ) 1807 #ifndef MUSL 1808 TEST_STRTO_INT(strtouq, char, ) 1809 #endif 1810 1811 TEST_STRTO_FLOAT(strtof, char, ) 1812 TEST_STRTO_FLOAT(strtod, char, ) 1813 TEST_STRTO_FLOAT(strtold, char, ) 1814 1815 #ifndef MUSL 1816 TEST_STRTO_FLOAT_LOC(strtof_l, char, ) 1817 TEST_STRTO_FLOAT_LOC(strtod_l, char, ) 1818 TEST_STRTO_FLOAT_LOC(strtold_l, char, ) 1819 1820 TEST_STRTO_INT_LOC(strtol_l, char, ) 1821 TEST_STRTO_INT_LOC(strtoll_l, char, ) 1822 TEST_STRTO_INT_LOC(strtoul_l, char, ) 1823 TEST_STRTO_INT_LOC(strtoull_l, char, ) 1824 #endif 1825 1826 TEST_STRTO_INT(wcstol, wchar_t, L) 1827 TEST_STRTO_INT(wcstoll, wchar_t, L) 1828 TEST_STRTO_INT(wcstoul, wchar_t, L) 1829 TEST_STRTO_INT(wcstoull, wchar_t, L) 1830 1831 TEST_STRTO_FLOAT(wcstof, wchar_t, L) 1832 TEST_STRTO_FLOAT(wcstod, wchar_t, L) 1833 TEST_STRTO_FLOAT(wcstold, wchar_t, L) 1834 1835 #ifndef MUSL 1836 TEST_STRTO_FLOAT_LOC(wcstof_l, wchar_t, L) 1837 TEST_STRTO_FLOAT_LOC(wcstod_l, wchar_t, L) 1838 TEST_STRTO_FLOAT_LOC(wcstold_l, wchar_t, L) 1839 1840 TEST_STRTO_INT_LOC(wcstol_l, wchar_t, L) 1841 TEST_STRTO_INT_LOC(wcstoll_l, wchar_t, L) 1842 TEST_STRTO_INT_LOC(wcstoul_l, wchar_t, L) 1843 TEST_STRTO_INT_LOC(wcstoull_l, wchar_t, L) 1844 #endif 1845 1846 1847 TEST(MemorySanitizer, strtoimax) { 1848 char *e; 1849 ASSERT_EQ(1, strtoimax("1", &e, 10)); 1850 EXPECT_NOT_POISONED((S8) e); 1851 } 1852 1853 TEST(MemorySanitizer, strtoumax) { 1854 char *e; 1855 ASSERT_EQ(1U, strtoumax("1", &e, 10)); 1856 EXPECT_NOT_POISONED((S8) e); 1857 } 1858 1859 #ifdef __GLIBC__ 1860 extern "C" float __strtof_l(const char *nptr, char **endptr, locale_t loc); 1861 TEST_STRTO_FLOAT_LOC(__strtof_l, char, ) 1862 extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1863 TEST_STRTO_FLOAT_LOC(__strtod_l, char, ) 1864 extern "C" long double __strtold_l(const char *nptr, char **endptr, 1865 locale_t loc); 1866 TEST_STRTO_FLOAT_LOC(__strtold_l, char, ) 1867 1868 extern "C" float __wcstof_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc); 1869 TEST_STRTO_FLOAT_LOC(__wcstof_l, wchar_t, L) 1870 extern "C" double __wcstod_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc); 1871 TEST_STRTO_FLOAT_LOC(__wcstod_l, wchar_t, L) 1872 extern "C" long double __wcstold_l(const wchar_t *nptr, wchar_t **endptr, 1873 locale_t loc); 1874 TEST_STRTO_FLOAT_LOC(__wcstold_l, wchar_t, L) 1875 #endif // __GLIBC__ 1876 1877 TEST(MemorySanitizer, modf) { 1878 double y; 1879 modf(2.1, &y); 1880 EXPECT_NOT_POISONED(y); 1881 } 1882 1883 TEST(MemorySanitizer, modff) { 1884 float y; 1885 modff(2.1, &y); 1886 EXPECT_NOT_POISONED(y); 1887 } 1888 1889 TEST(MemorySanitizer, modfl) { 1890 long double y; 1891 modfl(2.1, &y); 1892 EXPECT_NOT_POISONED(y); 1893 } 1894 1895 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1896 TEST(MemorySanitizer, sincos) { 1897 double s, c; 1898 sincos(0.2, &s, &c); 1899 EXPECT_NOT_POISONED(s); 1900 EXPECT_NOT_POISONED(c); 1901 } 1902 #endif 1903 1904 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1905 TEST(MemorySanitizer, sincosf) { 1906 float s, c; 1907 sincosf(0.2, &s, &c); 1908 EXPECT_NOT_POISONED(s); 1909 EXPECT_NOT_POISONED(c); 1910 } 1911 #endif 1912 1913 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1914 TEST(MemorySanitizer, sincosl) { 1915 long double s, c; 1916 sincosl(0.2, &s, &c); 1917 EXPECT_NOT_POISONED(s); 1918 EXPECT_NOT_POISONED(c); 1919 } 1920 #endif 1921 1922 TEST(MemorySanitizer, remquo) { 1923 int quo; 1924 double res = remquo(29.0, 3.0, &quo); 1925 ASSERT_NE(0.0, res); 1926 EXPECT_NOT_POISONED(quo); 1927 } 1928 1929 TEST(MemorySanitizer, remquof) { 1930 int quo; 1931 float res = remquof(29.0, 3.0, &quo); 1932 ASSERT_NE(0.0, res); 1933 EXPECT_NOT_POISONED(quo); 1934 } 1935 1936 #if !defined(__NetBSD__) 1937 TEST(MemorySanitizer, remquol) { 1938 int quo; 1939 long double res = remquof(29.0, 3.0, &quo); 1940 ASSERT_NE(0.0, res); 1941 EXPECT_NOT_POISONED(quo); 1942 } 1943 #endif 1944 1945 TEST(MemorySanitizer, lgamma) { 1946 double res = lgamma(1.1); 1947 ASSERT_NE(0.0, res); 1948 EXPECT_NOT_POISONED(signgam); 1949 } 1950 1951 TEST(MemorySanitizer, lgammaf) { 1952 float res = lgammaf(1.1); 1953 ASSERT_NE(0.0, res); 1954 EXPECT_NOT_POISONED(signgam); 1955 } 1956 1957 #if !defined(__NetBSD__) 1958 TEST(MemorySanitizer, lgammal) { 1959 long double res = lgammal(1.1); 1960 ASSERT_NE(0.0, res); 1961 EXPECT_NOT_POISONED(signgam); 1962 } 1963 #endif 1964 1965 TEST(MemorySanitizer, lgamma_r) { 1966 int sgn; 1967 double res = lgamma_r(1.1, &sgn); 1968 ASSERT_NE(0.0, res); 1969 EXPECT_NOT_POISONED(sgn); 1970 } 1971 1972 TEST(MemorySanitizer, lgammaf_r) { 1973 int sgn; 1974 float res = lgammaf_r(1.1, &sgn); 1975 ASSERT_NE(0.0, res); 1976 EXPECT_NOT_POISONED(sgn); 1977 } 1978 1979 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1980 TEST(MemorySanitizer, lgammal_r) { 1981 int sgn; 1982 long double res = lgammal_r(1.1, &sgn); 1983 ASSERT_NE(0.0, res); 1984 EXPECT_NOT_POISONED(sgn); 1985 } 1986 #endif 1987 1988 #ifdef __GLIBC__ 1989 TEST(MemorySanitizer, drand48_r) { 1990 struct drand48_data buf; 1991 srand48_r(0, &buf); 1992 double d; 1993 drand48_r(&buf, &d); 1994 EXPECT_NOT_POISONED(d); 1995 } 1996 1997 TEST(MemorySanitizer, lrand48_r) { 1998 struct drand48_data buf; 1999 srand48_r(0, &buf); 2000 long d; 2001 lrand48_r(&buf, &d); 2002 EXPECT_NOT_POISONED(d); 2003 } 2004 #endif 2005 2006 TEST(MemorySanitizer, sprintf) { 2007 char buff[10]; 2008 break_optimization(buff); 2009 EXPECT_POISONED(buff[0]); 2010 int res = sprintf(buff, "%d", 1234567); 2011 ASSERT_EQ(res, 7); 2012 ASSERT_EQ(buff[0], '1'); 2013 ASSERT_EQ(buff[1], '2'); 2014 ASSERT_EQ(buff[2], '3'); 2015 ASSERT_EQ(buff[6], '7'); 2016 ASSERT_EQ(buff[7], 0); 2017 EXPECT_POISONED(buff[8]); 2018 } 2019 2020 TEST(MemorySanitizer, snprintf) { 2021 char buff[10]; 2022 break_optimization(buff); 2023 EXPECT_POISONED(buff[0]); 2024 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 2025 ASSERT_EQ(res, 7); 2026 ASSERT_EQ(buff[0], '1'); 2027 ASSERT_EQ(buff[1], '2'); 2028 ASSERT_EQ(buff[2], '3'); 2029 ASSERT_EQ(buff[6], '7'); 2030 ASSERT_EQ(buff[7], 0); 2031 EXPECT_POISONED(buff[8]); 2032 } 2033 2034 TEST(MemorySanitizer, swprintf) { 2035 wchar_t buff[10]; 2036 ASSERT_EQ(4U, sizeof(wchar_t)); 2037 break_optimization(buff); 2038 EXPECT_POISONED(buff[0]); 2039 int res = swprintf(buff, 9, L"%d", 1234567); 2040 ASSERT_EQ(res, 7); 2041 ASSERT_EQ(buff[0], '1'); 2042 ASSERT_EQ(buff[1], '2'); 2043 ASSERT_EQ(buff[2], '3'); 2044 ASSERT_EQ(buff[6], '7'); 2045 ASSERT_EQ(buff[7], L'\0'); 2046 EXPECT_POISONED(buff[8]); 2047 } 2048 2049 TEST(MemorySanitizer, asprintf) { 2050 char *pbuf; 2051 EXPECT_POISONED(pbuf); 2052 int res = asprintf(&pbuf, "%d", 1234567); 2053 ASSERT_EQ(res, 7); 2054 EXPECT_NOT_POISONED(pbuf); 2055 ASSERT_EQ(pbuf[0], '1'); 2056 ASSERT_EQ(pbuf[1], '2'); 2057 ASSERT_EQ(pbuf[2], '3'); 2058 ASSERT_EQ(pbuf[6], '7'); 2059 ASSERT_EQ(pbuf[7], 0); 2060 free(pbuf); 2061 } 2062 2063 TEST(MemorySanitizer, mbstowcs) { 2064 const char *x = "abc"; 2065 wchar_t buff[10]; 2066 int res = mbstowcs(buff, x, 2); 2067 EXPECT_EQ(2, res); 2068 EXPECT_EQ(L'a', buff[0]); 2069 EXPECT_EQ(L'b', buff[1]); 2070 EXPECT_POISONED(buff[2]); 2071 res = mbstowcs(buff, x, 10); 2072 EXPECT_EQ(3, res); 2073 EXPECT_NOT_POISONED(buff[3]); 2074 } 2075 2076 TEST(MemorySanitizer, wcstombs) { 2077 const wchar_t *x = L"abc"; 2078 char buff[10]; 2079 int res = wcstombs(buff, x, 4); 2080 EXPECT_EQ(res, 3); 2081 EXPECT_EQ(buff[0], 'a'); 2082 EXPECT_EQ(buff[1], 'b'); 2083 EXPECT_EQ(buff[2], 'c'); 2084 } 2085 2086 TEST(MemorySanitizer, wcsrtombs) { 2087 const wchar_t *x = L"abc"; 2088 const wchar_t *p = x; 2089 char buff[10]; 2090 mbstate_t mbs; 2091 memset(&mbs, 0, sizeof(mbs)); 2092 int res = wcsrtombs(buff, &p, 4, &mbs); 2093 EXPECT_EQ(res, 3); 2094 EXPECT_EQ(buff[0], 'a'); 2095 EXPECT_EQ(buff[1], 'b'); 2096 EXPECT_EQ(buff[2], 'c'); 2097 EXPECT_EQ(buff[3], '\0'); 2098 EXPECT_POISONED(buff[4]); 2099 } 2100 2101 TEST(MemorySanitizer, wcsnrtombs) { 2102 const wchar_t *x = L"abc"; 2103 const wchar_t *p = x; 2104 char buff[10]; 2105 mbstate_t mbs; 2106 memset(&mbs, 0, sizeof(mbs)); 2107 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 2108 EXPECT_EQ(res, 2); 2109 EXPECT_EQ(buff[0], 'a'); 2110 EXPECT_EQ(buff[1], 'b'); 2111 EXPECT_POISONED(buff[2]); 2112 } 2113 2114 TEST(MemorySanitizer, wcrtomb) { 2115 wchar_t x = L'a'; 2116 char buff[10]; 2117 mbstate_t mbs; 2118 memset(&mbs, 0, sizeof(mbs)); 2119 size_t res = wcrtomb(buff, x, &mbs); 2120 EXPECT_EQ(res, (size_t)1); 2121 EXPECT_EQ(buff[0], 'a'); 2122 } 2123 2124 TEST(MemorySanitizer, wctomb) { 2125 wchar_t x = L'a'; 2126 char buff[10]; 2127 wctomb(nullptr, x); 2128 int res = wctomb(buff, x); 2129 EXPECT_EQ(res, 1); 2130 EXPECT_EQ(buff[0], 'a'); 2131 EXPECT_POISONED(buff[1]); 2132 } 2133 2134 TEST(MemorySanitizer, wmemset) { 2135 wchar_t x[25]; 2136 break_optimization(x); 2137 EXPECT_POISONED(x[0]); 2138 wmemset(x, L'A', 10); 2139 EXPECT_EQ(x[0], L'A'); 2140 EXPECT_EQ(x[9], L'A'); 2141 EXPECT_POISONED(x[10]); 2142 } 2143 2144 TEST(MemorySanitizer, mbtowc) { 2145 const char *x = "abc"; 2146 wchar_t wx; 2147 int res = mbtowc(&wx, x, 3); 2148 EXPECT_GT(res, 0); 2149 EXPECT_NOT_POISONED(wx); 2150 } 2151 2152 TEST(MemorySanitizer, mbrtowc) { 2153 mbstate_t mbs = {}; 2154 2155 wchar_t wc; 2156 size_t res = mbrtowc(&wc, "\377", 1, &mbs); 2157 EXPECT_EQ(res, -1ULL); 2158 2159 res = mbrtowc(&wc, "abc", 3, &mbs); 2160 EXPECT_GT(res, 0ULL); 2161 EXPECT_NOT_POISONED(wc); 2162 } 2163 2164 TEST(MemorySanitizer, wcsftime) { 2165 wchar_t x[100]; 2166 time_t t = time(NULL); 2167 struct tm tms; 2168 struct tm *tmres = localtime_r(&t, &tms); 2169 ASSERT_NE((void *)0, tmres); 2170 size_t res = wcsftime(x, sizeof(x) / sizeof(x[0]), L"%Y-%m-%d", tmres); 2171 EXPECT_GT(res, 0UL); 2172 EXPECT_EQ(res, wcslen(x)); 2173 } 2174 2175 TEST(MemorySanitizer, gettimeofday) { 2176 struct timeval tv; 2177 struct timezone tz; 2178 break_optimization(&tv); 2179 break_optimization(&tz); 2180 ASSERT_EQ(16U, sizeof(tv)); 2181 ASSERT_EQ(8U, sizeof(tz)); 2182 EXPECT_POISONED(tv.tv_sec); 2183 EXPECT_POISONED(tv.tv_usec); 2184 EXPECT_POISONED(tz.tz_minuteswest); 2185 EXPECT_POISONED(tz.tz_dsttime); 2186 ASSERT_EQ(0, gettimeofday(&tv, &tz)); 2187 EXPECT_NOT_POISONED(tv.tv_sec); 2188 EXPECT_NOT_POISONED(tv.tv_usec); 2189 EXPECT_NOT_POISONED(tz.tz_minuteswest); 2190 EXPECT_NOT_POISONED(tz.tz_dsttime); 2191 } 2192 2193 TEST(MemorySanitizer, clock_gettime) { 2194 struct timespec tp; 2195 EXPECT_POISONED(tp.tv_sec); 2196 EXPECT_POISONED(tp.tv_nsec); 2197 ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &tp)); 2198 EXPECT_NOT_POISONED(tp.tv_sec); 2199 EXPECT_NOT_POISONED(tp.tv_nsec); 2200 } 2201 2202 TEST(MemorySanitizer, clock_getres) { 2203 struct timespec tp; 2204 EXPECT_POISONED(tp.tv_sec); 2205 EXPECT_POISONED(tp.tv_nsec); 2206 ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, 0)); 2207 EXPECT_POISONED(tp.tv_sec); 2208 EXPECT_POISONED(tp.tv_nsec); 2209 ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, &tp)); 2210 EXPECT_NOT_POISONED(tp.tv_sec); 2211 EXPECT_NOT_POISONED(tp.tv_nsec); 2212 } 2213 2214 TEST(MemorySanitizer, getitimer) { 2215 struct itimerval it1, it2; 2216 int res; 2217 EXPECT_POISONED(it1.it_interval.tv_sec); 2218 EXPECT_POISONED(it1.it_interval.tv_usec); 2219 EXPECT_POISONED(it1.it_value.tv_sec); 2220 EXPECT_POISONED(it1.it_value.tv_usec); 2221 res = getitimer(ITIMER_VIRTUAL, &it1); 2222 ASSERT_EQ(0, res); 2223 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 2224 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 2225 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 2226 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 2227 2228 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 2229 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 2230 2231 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 2232 ASSERT_EQ(0, res); 2233 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 2234 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 2235 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 2236 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 2237 2238 // Check that old_value can be 0, and disable the timer. 2239 memset(&it1, 0, sizeof(it1)); 2240 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 2241 ASSERT_EQ(0, res); 2242 } 2243 2244 TEST(MemorySanitizer, setitimer_null) { 2245 setitimer(ITIMER_VIRTUAL, 0, 0); 2246 // Not testing the return value, since it the behaviour seems to differ 2247 // between libc implementations and POSIX. 2248 // Should never crash, though. 2249 } 2250 2251 TEST(MemorySanitizer, time) { 2252 time_t t; 2253 EXPECT_POISONED(t); 2254 time_t t2 = time(&t); 2255 ASSERT_NE(t2, (time_t)-1); 2256 EXPECT_NOT_POISONED(t); 2257 } 2258 2259 TEST(MemorySanitizer, strptime) { 2260 struct tm time; 2261 char *p = strptime("11/1/2013-05:39", "%m/%d/%Y-%H:%M", &time); 2262 ASSERT_TRUE(p != NULL); 2263 EXPECT_NOT_POISONED(time.tm_sec); 2264 EXPECT_NOT_POISONED(time.tm_hour); 2265 EXPECT_NOT_POISONED(time.tm_year); 2266 } 2267 2268 TEST(MemorySanitizer, localtime) { 2269 time_t t = 123; 2270 struct tm *time = localtime(&t); 2271 ASSERT_TRUE(time != NULL); 2272 EXPECT_NOT_POISONED(time->tm_sec); 2273 EXPECT_NOT_POISONED(time->tm_hour); 2274 EXPECT_NOT_POISONED(time->tm_year); 2275 EXPECT_NOT_POISONED(time->tm_isdst); 2276 EXPECT_NE(0U, strlen(time->tm_zone)); 2277 } 2278 2279 TEST(MemorySanitizer, localtime_r) { 2280 time_t t = 123; 2281 struct tm time; 2282 struct tm *res = localtime_r(&t, &time); 2283 ASSERT_TRUE(res != NULL); 2284 EXPECT_NOT_POISONED(time.tm_sec); 2285 EXPECT_NOT_POISONED(time.tm_hour); 2286 EXPECT_NOT_POISONED(time.tm_year); 2287 EXPECT_NOT_POISONED(time.tm_isdst); 2288 EXPECT_NE(0U, strlen(time.tm_zone)); 2289 } 2290 2291 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2292 /* Creates a temporary file with contents similar to /etc/fstab to be used 2293 with getmntent{_r}. */ 2294 class TempFstabFile { 2295 public: 2296 TempFstabFile() : fd (-1) { } 2297 ~TempFstabFile() { 2298 if (fd >= 0) 2299 close (fd); 2300 } 2301 2302 bool Create(void) { 2303 snprintf(tmpfile, sizeof(tmpfile), "/tmp/msan.getmntent.tmp.XXXXXX"); 2304 2305 fd = mkstemp(tmpfile); 2306 if (fd == -1) 2307 return false; 2308 2309 const char entry[] = "/dev/root / ext4 errors=remount-ro 0 1"; 2310 size_t entrylen = sizeof(entry); 2311 2312 size_t bytesWritten = write(fd, entry, entrylen); 2313 if (entrylen != bytesWritten) 2314 return false; 2315 2316 return true; 2317 } 2318 2319 const char* FileName(void) { 2320 return tmpfile; 2321 } 2322 2323 private: 2324 char tmpfile[128]; 2325 int fd; 2326 }; 2327 #endif 2328 2329 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2330 TEST(MemorySanitizer, getmntent) { 2331 TempFstabFile fstabtmp; 2332 ASSERT_TRUE(fstabtmp.Create()); 2333 FILE *fp = setmntent(fstabtmp.FileName(), "r"); 2334 2335 struct mntent *mnt = getmntent(fp); 2336 ASSERT_TRUE(mnt != NULL); 2337 ASSERT_NE(0U, strlen(mnt->mnt_fsname)); 2338 ASSERT_NE(0U, strlen(mnt->mnt_dir)); 2339 ASSERT_NE(0U, strlen(mnt->mnt_type)); 2340 ASSERT_NE(0U, strlen(mnt->mnt_opts)); 2341 EXPECT_NOT_POISONED(mnt->mnt_freq); 2342 EXPECT_NOT_POISONED(mnt->mnt_passno); 2343 fclose(fp); 2344 } 2345 #endif 2346 2347 #ifdef __GLIBC__ 2348 TEST(MemorySanitizer, getmntent_r) { 2349 TempFstabFile fstabtmp; 2350 ASSERT_TRUE(fstabtmp.Create()); 2351 FILE *fp = setmntent(fstabtmp.FileName(), "r"); 2352 2353 struct mntent mntbuf; 2354 char buf[1000]; 2355 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 2356 ASSERT_TRUE(mnt != NULL); 2357 ASSERT_NE(0U, strlen(mnt->mnt_fsname)); 2358 ASSERT_NE(0U, strlen(mnt->mnt_dir)); 2359 ASSERT_NE(0U, strlen(mnt->mnt_type)); 2360 ASSERT_NE(0U, strlen(mnt->mnt_opts)); 2361 EXPECT_NOT_POISONED(mnt->mnt_freq); 2362 EXPECT_NOT_POISONED(mnt->mnt_passno); 2363 fclose(fp); 2364 } 2365 #endif 2366 2367 #if !defined(__NetBSD__) 2368 TEST(MemorySanitizer, ether) { 2369 const char *asc = "11:22:33:44:55:66"; 2370 struct ether_addr *paddr = ether_aton(asc); 2371 EXPECT_NOT_POISONED(*paddr); 2372 2373 struct ether_addr addr; 2374 paddr = ether_aton_r(asc, &addr); 2375 ASSERT_EQ(paddr, &addr); 2376 EXPECT_NOT_POISONED(addr); 2377 2378 char *s = ether_ntoa(&addr); 2379 ASSERT_NE(0U, strlen(s)); 2380 2381 char buf[100]; 2382 s = ether_ntoa_r(&addr, buf); 2383 ASSERT_EQ(s, buf); 2384 ASSERT_NE(0U, strlen(buf)); 2385 } 2386 #endif 2387 2388 TEST(MemorySanitizer, mmap) { 2389 const int size = 4096; 2390 void *p1, *p2; 2391 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 2392 __msan_poison(p1, size); 2393 munmap(p1, size); 2394 for (int i = 0; i < 1000; i++) { 2395 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 2396 if (p2 == p1) 2397 break; 2398 else 2399 munmap(p2, size); 2400 } 2401 if (p1 == p2) { 2402 EXPECT_NOT_POISONED(*(char*)p2); 2403 munmap(p2, size); 2404 } 2405 } 2406 2407 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2408 // FIXME: enable and add ecvt. 2409 // FIXME: check why msandr does nt handle fcvt. 2410 TEST(MemorySanitizer, fcvt) { 2411 int a, b; 2412 break_optimization(&a); 2413 break_optimization(&b); 2414 EXPECT_POISONED(a); 2415 EXPECT_POISONED(b); 2416 char *str = fcvt(12345.6789, 10, &a, &b); 2417 EXPECT_NOT_POISONED(a); 2418 EXPECT_NOT_POISONED(b); 2419 ASSERT_NE(nullptr, str); 2420 EXPECT_NOT_POISONED(str[0]); 2421 ASSERT_NE(0U, strlen(str)); 2422 } 2423 #endif 2424 2425 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2426 TEST(MemorySanitizer, fcvt_long) { 2427 int a, b; 2428 break_optimization(&a); 2429 break_optimization(&b); 2430 EXPECT_POISONED(a); 2431 EXPECT_POISONED(b); 2432 char *str = fcvt(111111112345.6789, 10, &a, &b); 2433 EXPECT_NOT_POISONED(a); 2434 EXPECT_NOT_POISONED(b); 2435 ASSERT_NE(nullptr, str); 2436 EXPECT_NOT_POISONED(str[0]); 2437 ASSERT_NE(0U, strlen(str)); 2438 } 2439 #endif 2440 2441 TEST(MemorySanitizer, memchr) { 2442 char x[10]; 2443 break_optimization(x); 2444 EXPECT_POISONED(x[0]); 2445 x[2] = '2'; 2446 void *res; 2447 EXPECT_UMR(res = memchr(x, '2', 10)); 2448 EXPECT_NOT_POISONED(res); 2449 x[0] = '0'; 2450 x[1] = '1'; 2451 res = memchr(x, '2', 10); 2452 EXPECT_EQ(&x[2], res); 2453 EXPECT_UMR(res = memchr(x, '3', 10)); 2454 EXPECT_NOT_POISONED(res); 2455 } 2456 2457 TEST(MemorySanitizer, memrchr) { 2458 char x[10]; 2459 break_optimization(x); 2460 EXPECT_POISONED(x[0]); 2461 x[9] = '9'; 2462 void *res; 2463 EXPECT_UMR(res = memrchr(x, '9', 10)); 2464 EXPECT_NOT_POISONED(res); 2465 x[0] = '0'; 2466 x[1] = '1'; 2467 res = memrchr(x, '0', 2); 2468 EXPECT_EQ(&x[0], res); 2469 EXPECT_UMR(res = memrchr(x, '7', 10)); 2470 EXPECT_NOT_POISONED(res); 2471 } 2472 2473 TEST(MemorySanitizer, frexp) { 2474 int x; 2475 x = *GetPoisoned<int>(); 2476 double r = frexp(1.1, &x); 2477 EXPECT_NOT_POISONED(r); 2478 EXPECT_NOT_POISONED(x); 2479 2480 x = *GetPoisoned<int>(); 2481 float rf = frexpf(1.1, &x); 2482 EXPECT_NOT_POISONED(rf); 2483 EXPECT_NOT_POISONED(x); 2484 2485 x = *GetPoisoned<int>(); 2486 double rl = frexpl(1.1, &x); 2487 EXPECT_NOT_POISONED(rl); 2488 EXPECT_NOT_POISONED(x); 2489 } 2490 2491 namespace { 2492 2493 static int cnt; 2494 2495 void SigactionHandler(int signo, siginfo_t* si, void* uc) { 2496 ASSERT_EQ(signo, SIGPROF); 2497 ASSERT_TRUE(si != NULL); 2498 EXPECT_NOT_POISONED(si->si_errno); 2499 EXPECT_NOT_POISONED(si->si_pid); 2500 #ifdef _UC_MACHINE_PC 2501 EXPECT_NOT_POISONED(_UC_MACHINE_PC((ucontext_t*)uc)); 2502 #else 2503 # if __linux__ 2504 # if defined(__x86_64__) 2505 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 2506 # elif defined(__i386__) 2507 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 2508 # endif 2509 # endif 2510 #endif 2511 ++cnt; 2512 } 2513 2514 TEST(MemorySanitizer, sigaction) { 2515 struct sigaction act = {}; 2516 struct sigaction oldact = {}; 2517 struct sigaction origact = {}; 2518 2519 sigaction(SIGPROF, 0, &origact); 2520 2521 act.sa_flags |= SA_SIGINFO; 2522 act.sa_sigaction = &SigactionHandler; 2523 sigaction(SIGPROF, &act, 0); 2524 2525 kill(getpid(), SIGPROF); 2526 2527 act.sa_flags &= ~SA_SIGINFO; 2528 act.sa_handler = SIG_DFL; 2529 sigaction(SIGPROF, &act, 0); 2530 2531 act.sa_flags &= ~SA_SIGINFO; 2532 act.sa_handler = SIG_IGN; 2533 sigaction(SIGPROF, &act, &oldact); 2534 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 2535 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 2536 kill(getpid(), SIGPROF); 2537 2538 act.sa_flags |= SA_SIGINFO; 2539 act.sa_sigaction = &SigactionHandler; 2540 sigaction(SIGPROF, &act, &oldact); 2541 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 2542 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 2543 kill(getpid(), SIGPROF); 2544 2545 act.sa_flags &= ~SA_SIGINFO; 2546 act.sa_handler = SIG_DFL; 2547 sigaction(SIGPROF, &act, &oldact); 2548 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 2549 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 2550 EXPECT_EQ(2, cnt); 2551 2552 sigaction(SIGPROF, &origact, 0); 2553 } 2554 2555 } // namespace 2556 2557 2558 TEST(MemorySanitizer, sigemptyset) { 2559 sigset_t s; 2560 EXPECT_POISONED(s); 2561 int res = sigemptyset(&s); 2562 ASSERT_EQ(0, res); 2563 EXPECT_NOT_POISONED(s); 2564 } 2565 2566 TEST(MemorySanitizer, sigfillset) { 2567 sigset_t s; 2568 EXPECT_POISONED(s); 2569 int res = sigfillset(&s); 2570 ASSERT_EQ(0, res); 2571 EXPECT_NOT_POISONED(s); 2572 } 2573 2574 TEST(MemorySanitizer, sigpending) { 2575 sigset_t s; 2576 EXPECT_POISONED(s); 2577 int res = sigpending(&s); 2578 ASSERT_EQ(0, res); 2579 EXPECT_NOT_POISONED(s); 2580 } 2581 2582 TEST(MemorySanitizer, sigprocmask) { 2583 sigset_t s; 2584 EXPECT_POISONED(s); 2585 int res = sigprocmask(SIG_BLOCK, 0, &s); 2586 ASSERT_EQ(0, res); 2587 EXPECT_NOT_POISONED(s); 2588 } 2589 2590 TEST(MemorySanitizer, pthread_sigmask) { 2591 sigset_t s; 2592 EXPECT_POISONED(s); 2593 int res = pthread_sigmask(SIG_BLOCK, 0, &s); 2594 ASSERT_EQ(0, res); 2595 EXPECT_NOT_POISONED(s); 2596 } 2597 2598 struct StructWithDtor { 2599 ~StructWithDtor(); 2600 }; 2601 2602 NOINLINE StructWithDtor::~StructWithDtor() { 2603 break_optimization(0); 2604 } 2605 2606 TEST(MemorySanitizer, Invoke) { 2607 StructWithDtor s; // Will cause the calls to become invokes. 2608 EXPECT_NOT_POISONED(0); 2609 EXPECT_POISONED(*GetPoisoned<int>()); 2610 EXPECT_NOT_POISONED(0); 2611 EXPECT_POISONED(*GetPoisoned<int>()); 2612 EXPECT_POISONED(ReturnPoisoned<S4>()); 2613 } 2614 2615 TEST(MemorySanitizer, ptrtoint) { 2616 // Test that shadow is propagated through pointer-to-integer conversion. 2617 unsigned char c = 0; 2618 __msan_poison(&c, 1); 2619 uintptr_t u = (uintptr_t)c << 8; 2620 EXPECT_NOT_POISONED(u & 0xFF00FF); 2621 EXPECT_POISONED(u & 0xFF00); 2622 2623 break_optimization(&u); 2624 void* p = (void*)u; 2625 2626 break_optimization(&p); 2627 EXPECT_POISONED(p); 2628 EXPECT_NOT_POISONED(((uintptr_t)p) & 0xFF00FF); 2629 EXPECT_POISONED(((uintptr_t)p) & 0xFF00); 2630 } 2631 2632 static void vaargsfn2(int guard, ...) { 2633 va_list vl; 2634 va_start(vl, guard); 2635 EXPECT_NOT_POISONED(va_arg(vl, int)); 2636 EXPECT_NOT_POISONED(va_arg(vl, int)); 2637 EXPECT_NOT_POISONED(va_arg(vl, int)); 2638 EXPECT_POISONED(va_arg(vl, double)); 2639 va_end(vl); 2640 } 2641 2642 static void vaargsfn(int guard, ...) { 2643 va_list vl; 2644 va_start(vl, guard); 2645 EXPECT_NOT_POISONED(va_arg(vl, int)); 2646 EXPECT_POISONED(va_arg(vl, int)); 2647 // The following call will overwrite __msan_param_tls. 2648 // Checks after it test that arg shadow was somehow saved across the call. 2649 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 2650 EXPECT_NOT_POISONED(va_arg(vl, int)); 2651 EXPECT_POISONED(va_arg(vl, int)); 2652 va_end(vl); 2653 } 2654 2655 TEST(MemorySanitizer, VAArgTest) { 2656 int* x = GetPoisoned<int>(); 2657 int* y = GetPoisoned<int>(4); 2658 vaargsfn(1, 13, *x, 42, *y); 2659 } 2660 2661 static void vaargsfn_many(int guard, ...) { 2662 va_list vl; 2663 va_start(vl, guard); 2664 EXPECT_NOT_POISONED(va_arg(vl, int)); 2665 EXPECT_POISONED(va_arg(vl, int)); 2666 EXPECT_NOT_POISONED(va_arg(vl, int)); 2667 EXPECT_NOT_POISONED(va_arg(vl, int)); 2668 EXPECT_NOT_POISONED(va_arg(vl, int)); 2669 EXPECT_NOT_POISONED(va_arg(vl, int)); 2670 EXPECT_NOT_POISONED(va_arg(vl, int)); 2671 EXPECT_NOT_POISONED(va_arg(vl, int)); 2672 EXPECT_NOT_POISONED(va_arg(vl, int)); 2673 EXPECT_POISONED(va_arg(vl, int)); 2674 va_end(vl); 2675 } 2676 2677 TEST(MemorySanitizer, VAArgManyTest) { 2678 int* x = GetPoisoned<int>(); 2679 int* y = GetPoisoned<int>(4); 2680 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 2681 } 2682 2683 static void vaargsfn_manyfix(int g1, int g2, int g3, int g4, int g5, int g6, int g7, int g8, int g9, ...) { 2684 va_list vl; 2685 va_start(vl, g9); 2686 EXPECT_NOT_POISONED(va_arg(vl, int)); 2687 EXPECT_POISONED(va_arg(vl, int)); 2688 va_end(vl); 2689 } 2690 2691 TEST(MemorySanitizer, VAArgManyFixTest) { 2692 int* x = GetPoisoned<int>(); 2693 int* y = GetPoisoned<int>(); 2694 vaargsfn_manyfix(1, *x, 3, 4, 5, 6, 7, 8, 9, 10, *y); 2695 } 2696 2697 static void vaargsfn_pass2(va_list vl) { 2698 EXPECT_NOT_POISONED(va_arg(vl, int)); 2699 EXPECT_NOT_POISONED(va_arg(vl, int)); 2700 EXPECT_POISONED(va_arg(vl, int)); 2701 } 2702 2703 static void vaargsfn_pass(int guard, ...) { 2704 va_list vl; 2705 va_start(vl, guard); 2706 EXPECT_POISONED(va_arg(vl, int)); 2707 vaargsfn_pass2(vl); 2708 va_end(vl); 2709 } 2710 2711 TEST(MemorySanitizer, VAArgPass) { 2712 int* x = GetPoisoned<int>(); 2713 int* y = GetPoisoned<int>(4); 2714 vaargsfn_pass(1, *x, 2, 3, *y); 2715 } 2716 2717 static void vaargsfn_copy2(va_list vl) { 2718 EXPECT_NOT_POISONED(va_arg(vl, int)); 2719 EXPECT_POISONED(va_arg(vl, int)); 2720 } 2721 2722 static void vaargsfn_copy(int guard, ...) { 2723 va_list vl; 2724 va_start(vl, guard); 2725 EXPECT_NOT_POISONED(va_arg(vl, int)); 2726 EXPECT_POISONED(va_arg(vl, int)); 2727 va_list vl2; 2728 va_copy(vl2, vl); 2729 vaargsfn_copy2(vl2); 2730 EXPECT_NOT_POISONED(va_arg(vl, int)); 2731 EXPECT_POISONED(va_arg(vl, int)); 2732 va_end(vl); 2733 } 2734 2735 TEST(MemorySanitizer, VAArgCopy) { 2736 int* x = GetPoisoned<int>(); 2737 int* y = GetPoisoned<int>(4); 2738 vaargsfn_copy(1, 2, *x, 3, *y); 2739 } 2740 2741 static void vaargsfn_ptr(int guard, ...) { 2742 va_list vl; 2743 va_start(vl, guard); 2744 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2745 EXPECT_POISONED(va_arg(vl, int*)); 2746 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2747 EXPECT_POISONED(va_arg(vl, double*)); 2748 va_end(vl); 2749 } 2750 2751 TEST(MemorySanitizer, VAArgPtr) { 2752 int** x = GetPoisoned<int*>(); 2753 double** y = GetPoisoned<double*>(8); 2754 int z; 2755 vaargsfn_ptr(1, &z, *x, &z, *y); 2756 } 2757 2758 static void vaargsfn_overflow(int guard, ...) { 2759 va_list vl; 2760 va_start(vl, guard); 2761 EXPECT_NOT_POISONED(va_arg(vl, int)); 2762 EXPECT_NOT_POISONED(va_arg(vl, int)); 2763 EXPECT_POISONED(va_arg(vl, int)); 2764 EXPECT_NOT_POISONED(va_arg(vl, int)); 2765 EXPECT_NOT_POISONED(va_arg(vl, int)); 2766 EXPECT_NOT_POISONED(va_arg(vl, int)); 2767 2768 EXPECT_NOT_POISONED(va_arg(vl, double)); 2769 EXPECT_NOT_POISONED(va_arg(vl, double)); 2770 EXPECT_NOT_POISONED(va_arg(vl, double)); 2771 EXPECT_POISONED(va_arg(vl, double)); 2772 EXPECT_NOT_POISONED(va_arg(vl, double)); 2773 EXPECT_POISONED(va_arg(vl, int*)); 2774 EXPECT_NOT_POISONED(va_arg(vl, double)); 2775 EXPECT_NOT_POISONED(va_arg(vl, double)); 2776 2777 EXPECT_POISONED(va_arg(vl, int)); 2778 EXPECT_POISONED(va_arg(vl, double)); 2779 EXPECT_POISONED(va_arg(vl, int*)); 2780 2781 EXPECT_NOT_POISONED(va_arg(vl, int)); 2782 EXPECT_NOT_POISONED(va_arg(vl, double)); 2783 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2784 2785 EXPECT_POISONED(va_arg(vl, int)); 2786 EXPECT_POISONED(va_arg(vl, double)); 2787 EXPECT_POISONED(va_arg(vl, int*)); 2788 2789 va_end(vl); 2790 } 2791 2792 TEST(MemorySanitizer, VAArgOverflow) { 2793 int* x = GetPoisoned<int>(); 2794 double* y = GetPoisoned<double>(8); 2795 int** p = GetPoisoned<int*>(16); 2796 int z; 2797 vaargsfn_overflow(1, 2798 1, 2, *x, 4, 5, 6, 2799 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2800 // the following args will overflow for sure 2801 *x, *y, *p, 2802 7, 9.9, &z, 2803 *x, *y, *p); 2804 } 2805 2806 static void vaargsfn_tlsoverwrite2(int guard, ...) { 2807 va_list vl; 2808 va_start(vl, guard); 2809 for (int i = 0; i < 20; ++i) 2810 EXPECT_NOT_POISONED(va_arg(vl, int)); 2811 va_end(vl); 2812 } 2813 2814 static void vaargsfn_tlsoverwrite(int guard, ...) { 2815 // This call will overwrite TLS contents unless it's backed up somewhere. 2816 vaargsfn_tlsoverwrite2(2, 2817 42, 42, 42, 42, 42, 2818 42, 42, 42, 42, 42, 2819 42, 42, 42, 42, 42, 2820 42, 42, 42, 42, 42); // 20x 2821 va_list vl; 2822 va_start(vl, guard); 2823 for (int i = 0; i < 20; ++i) 2824 EXPECT_POISONED(va_arg(vl, int)); 2825 va_end(vl); 2826 } 2827 2828 TEST(MemorySanitizer, VAArgTLSOverwrite) { 2829 int* x = GetPoisoned<int>(); 2830 vaargsfn_tlsoverwrite(1, 2831 *x, *x, *x, *x, *x, 2832 *x, *x, *x, *x, *x, 2833 *x, *x, *x, *x, *x, 2834 *x, *x, *x, *x, *x); // 20x 2835 2836 } 2837 2838 struct StructByVal { 2839 int a, b, c, d, e, f; 2840 }; 2841 2842 static void vaargsfn_structbyval(int guard, ...) { 2843 va_list vl; 2844 va_start(vl, guard); 2845 { 2846 StructByVal s = va_arg(vl, StructByVal); 2847 EXPECT_NOT_POISONED(s.a); 2848 EXPECT_POISONED(s.b); 2849 EXPECT_NOT_POISONED(s.c); 2850 EXPECT_POISONED(s.d); 2851 EXPECT_NOT_POISONED(s.e); 2852 EXPECT_POISONED(s.f); 2853 } 2854 { 2855 StructByVal s = va_arg(vl, StructByVal); 2856 EXPECT_NOT_POISONED(s.a); 2857 EXPECT_POISONED(s.b); 2858 EXPECT_NOT_POISONED(s.c); 2859 EXPECT_POISONED(s.d); 2860 EXPECT_NOT_POISONED(s.e); 2861 EXPECT_POISONED(s.f); 2862 } 2863 va_end(vl); 2864 } 2865 2866 TEST(MemorySanitizer, VAArgStructByVal) { 2867 StructByVal s; 2868 s.a = 1; 2869 s.b = *GetPoisoned<int>(); 2870 s.c = 2; 2871 s.d = *GetPoisoned<int>(); 2872 s.e = 3; 2873 s.f = *GetPoisoned<int>(); 2874 vaargsfn_structbyval(0, s, s); 2875 } 2876 2877 NOINLINE void StructByValTestFunc(struct StructByVal s) { 2878 EXPECT_NOT_POISONED(s.a); 2879 EXPECT_POISONED(s.b); 2880 EXPECT_NOT_POISONED(s.c); 2881 EXPECT_POISONED(s.d); 2882 EXPECT_NOT_POISONED(s.e); 2883 EXPECT_POISONED(s.f); 2884 } 2885 2886 NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2887 StructByValTestFunc(s); 2888 } 2889 2890 NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2891 StructByValTestFunc(s); 2892 } 2893 2894 TEST(MemorySanitizer, StructByVal) { 2895 // Large aggregates are passed as "byval" pointer argument in LLVM. 2896 struct StructByVal s; 2897 s.a = 1; 2898 s.b = *GetPoisoned<int>(); 2899 s.c = 2; 2900 s.d = *GetPoisoned<int>(); 2901 s.e = 3; 2902 s.f = *GetPoisoned<int>(); 2903 StructByValTestFunc(s); 2904 StructByValTestFunc1(s); 2905 StructByValTestFunc2(0, s); 2906 } 2907 2908 2909 #if MSAN_HAS_M128 2910 NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2911 NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2912 TEST(MemorySanitizer, m128) { 2913 __m128i a = _mm_set1_epi16(0x1234); 2914 __m128i b = _mm_set1_epi16(0x7890); 2915 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2916 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2917 } 2918 // FIXME: add more tests for __m128i. 2919 #endif // MSAN_HAS_M128 2920 2921 // We should not complain when copying this poisoned hole. 2922 struct StructWithHole { 2923 U4 a; 2924 // 4-byte hole. 2925 U8 b; 2926 }; 2927 2928 NOINLINE StructWithHole ReturnStructWithHole() { 2929 StructWithHole res; 2930 __msan_poison(&res, sizeof(res)); 2931 res.a = 1; 2932 res.b = 2; 2933 return res; 2934 } 2935 2936 TEST(MemorySanitizer, StructWithHole) { 2937 StructWithHole a = ReturnStructWithHole(); 2938 break_optimization(&a); 2939 } 2940 2941 template <class T> 2942 NOINLINE T ReturnStruct() { 2943 T res; 2944 __msan_poison(&res, sizeof(res)); 2945 res.a = 1; 2946 return res; 2947 } 2948 2949 template <class T> 2950 NOINLINE void TestReturnStruct() { 2951 T s1 = ReturnStruct<T>(); 2952 EXPECT_NOT_POISONED(s1.a); 2953 EXPECT_POISONED(s1.b); 2954 } 2955 2956 struct SSS1 { 2957 int a, b, c; 2958 }; 2959 struct SSS2 { 2960 int b, a, c; 2961 }; 2962 struct SSS3 { 2963 int b, c, a; 2964 }; 2965 struct SSS4 { 2966 int c, b, a; 2967 }; 2968 2969 struct SSS5 { 2970 int a; 2971 float b; 2972 }; 2973 struct SSS6 { 2974 int a; 2975 double b; 2976 }; 2977 struct SSS7 { 2978 S8 b; 2979 int a; 2980 }; 2981 struct SSS8 { 2982 S2 b; 2983 S8 a; 2984 }; 2985 2986 TEST(MemorySanitizer, IntStruct3) { 2987 TestReturnStruct<SSS1>(); 2988 TestReturnStruct<SSS2>(); 2989 TestReturnStruct<SSS3>(); 2990 TestReturnStruct<SSS4>(); 2991 TestReturnStruct<SSS5>(); 2992 TestReturnStruct<SSS6>(); 2993 TestReturnStruct<SSS7>(); 2994 TestReturnStruct<SSS8>(); 2995 } 2996 2997 struct LongStruct { 2998 U1 a1, b1; 2999 U2 a2, b2; 3000 U4 a4, b4; 3001 U8 a8, b8; 3002 }; 3003 3004 NOINLINE LongStruct ReturnLongStruct1() { 3005 LongStruct res; 3006 __msan_poison(&res, sizeof(res)); 3007 res.a1 = res.a2 = res.a4 = res.a8 = 111; 3008 // leaves b1, .., b8 poisoned. 3009 return res; 3010 } 3011 3012 NOINLINE LongStruct ReturnLongStruct2() { 3013 LongStruct res; 3014 __msan_poison(&res, sizeof(res)); 3015 res.b1 = res.b2 = res.b4 = res.b8 = 111; 3016 // leaves a1, .., a8 poisoned. 3017 return res; 3018 } 3019 3020 TEST(MemorySanitizer, LongStruct) { 3021 LongStruct s1 = ReturnLongStruct1(); 3022 __msan_print_shadow(&s1, sizeof(s1)); 3023 EXPECT_NOT_POISONED(s1.a1); 3024 EXPECT_NOT_POISONED(s1.a2); 3025 EXPECT_NOT_POISONED(s1.a4); 3026 EXPECT_NOT_POISONED(s1.a8); 3027 3028 EXPECT_POISONED(s1.b1); 3029 EXPECT_POISONED(s1.b2); 3030 EXPECT_POISONED(s1.b4); 3031 EXPECT_POISONED(s1.b8); 3032 3033 LongStruct s2 = ReturnLongStruct2(); 3034 __msan_print_shadow(&s2, sizeof(s2)); 3035 EXPECT_NOT_POISONED(s2.b1); 3036 EXPECT_NOT_POISONED(s2.b2); 3037 EXPECT_NOT_POISONED(s2.b4); 3038 EXPECT_NOT_POISONED(s2.b8); 3039 3040 EXPECT_POISONED(s2.a1); 3041 EXPECT_POISONED(s2.a2); 3042 EXPECT_POISONED(s2.a4); 3043 EXPECT_POISONED(s2.a8); 3044 } 3045 3046 #if defined(__FreeBSD__) || defined(__NetBSD__) 3047 #define MSAN_TEST_PRLIMIT 0 3048 #elif defined(__GLIBC__) 3049 #define MSAN_TEST_PRLIMIT __GLIBC_PREREQ(2, 13) 3050 #else 3051 #define MSAN_TEST_PRLIMIT 1 3052 #endif 3053 3054 TEST(MemorySanitizer, getrlimit) { 3055 struct rlimit limit; 3056 __msan_poison(&limit, sizeof(limit)); 3057 int result = getrlimit(RLIMIT_DATA, &limit); 3058 ASSERT_EQ(result, 0); 3059 EXPECT_NOT_POISONED(limit.rlim_cur); 3060 EXPECT_NOT_POISONED(limit.rlim_max); 3061 3062 #if MSAN_TEST_PRLIMIT 3063 struct rlimit limit2; 3064 __msan_poison(&limit2, sizeof(limit2)); 3065 result = prlimit(getpid(), RLIMIT_DATA, &limit, &limit2); 3066 ASSERT_EQ(result, 0); 3067 EXPECT_NOT_POISONED(limit2.rlim_cur); 3068 EXPECT_NOT_POISONED(limit2.rlim_max); 3069 3070 __msan_poison(&limit, sizeof(limit)); 3071 result = prlimit(getpid(), RLIMIT_DATA, nullptr, &limit); 3072 ASSERT_EQ(result, 0); 3073 EXPECT_NOT_POISONED(limit.rlim_cur); 3074 EXPECT_NOT_POISONED(limit.rlim_max); 3075 3076 result = prlimit(getpid(), RLIMIT_DATA, &limit, nullptr); 3077 ASSERT_EQ(result, 0); 3078 #endif 3079 } 3080 3081 TEST(MemorySanitizer, getrusage) { 3082 struct rusage usage; 3083 __msan_poison(&usage, sizeof(usage)); 3084 int result = getrusage(RUSAGE_SELF, &usage); 3085 ASSERT_EQ(result, 0); 3086 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 3087 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 3088 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 3089 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 3090 EXPECT_NOT_POISONED(usage.ru_maxrss); 3091 EXPECT_NOT_POISONED(usage.ru_minflt); 3092 EXPECT_NOT_POISONED(usage.ru_majflt); 3093 EXPECT_NOT_POISONED(usage.ru_inblock); 3094 EXPECT_NOT_POISONED(usage.ru_oublock); 3095 EXPECT_NOT_POISONED(usage.ru_nvcsw); 3096 EXPECT_NOT_POISONED(usage.ru_nivcsw); 3097 } 3098 3099 #if defined(__FreeBSD__) || defined(__NetBSD__) 3100 static void GetProgramPath(char *buf, size_t sz) { 3101 #if defined(__FreeBSD__) 3102 int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 }; 3103 #elif defined(__NetBSD__) 3104 int mib[4] = { CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME}; 3105 #endif 3106 int res = sysctl(mib, 4, buf, &sz, NULL, 0); 3107 ASSERT_EQ(0, res); 3108 } 3109 #elif defined(__GLIBC__) || defined(MUSL) 3110 static void GetProgramPath(char *buf, size_t sz) { 3111 extern char *program_invocation_name; 3112 int res = snprintf(buf, sz, "%s", program_invocation_name); 3113 ASSERT_GE(res, 0); 3114 ASSERT_LT((size_t)res, sz); 3115 } 3116 #else 3117 # error "TODO: port this" 3118 #endif 3119 3120 static void dladdr_testfn() {} 3121 3122 TEST(MemorySanitizer, dladdr) { 3123 Dl_info info; 3124 __msan_poison(&info, sizeof(info)); 3125 int result = dladdr((const void*)dladdr_testfn, &info); 3126 ASSERT_NE(result, 0); 3127 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 3128 if (info.dli_fname) 3129 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 3130 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 3131 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 3132 if (info.dli_sname) 3133 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 3134 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 3135 } 3136 3137 #ifndef MSAN_TEST_DISABLE_DLOPEN 3138 3139 static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 3140 (*(int *)data)++; 3141 EXPECT_NOT_POISONED(info->dlpi_addr); 3142 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 3143 EXPECT_NOT_POISONED(info->dlpi_phnum); 3144 for (int i = 0; i < info->dlpi_phnum; ++i) 3145 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 3146 return 0; 3147 } 3148 3149 // Compute the path to our loadable DSO. We assume it's in the same 3150 // directory. Only use string routines that we intercept so far to do this. 3151 static void GetPathToLoadable(char *buf, size_t sz) { 3152 char program_path[kMaxPathLength]; 3153 GetProgramPath(program_path, sizeof(program_path)); 3154 3155 const char *last_slash = strrchr(program_path, '/'); 3156 ASSERT_NE(nullptr, last_slash); 3157 size_t dir_len = (size_t)(last_slash - program_path); 3158 #if defined(__x86_64__) 3159 static const char basename[] = "libmsan_loadable.x86_64.so"; 3160 #elif defined(__MIPSEB__) || defined(MIPSEB) 3161 static const char basename[] = "libmsan_loadable.mips64.so"; 3162 #elif defined(__mips64) 3163 static const char basename[] = "libmsan_loadable.mips64el.so"; 3164 #elif defined(__aarch64__) 3165 static const char basename[] = "libmsan_loadable.aarch64.so"; 3166 #elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 3167 static const char basename[] = "libmsan_loadable.powerpc64.so"; 3168 #elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 3169 static const char basename[] = "libmsan_loadable.powerpc64le.so"; 3170 #endif 3171 int res = snprintf(buf, sz, "%.*s/%s", 3172 (int)dir_len, program_path, basename); 3173 ASSERT_GE(res, 0); 3174 ASSERT_LT((size_t)res, sz); 3175 } 3176 3177 TEST(MemorySanitizer, dl_iterate_phdr) { 3178 char path[kMaxPathLength]; 3179 GetPathToLoadable(path, sizeof(path)); 3180 3181 // Having at least one dlopen'ed library in the process makes this more 3182 // entertaining. 3183 void *lib = dlopen(path, RTLD_LAZY); 3184 ASSERT_NE((void*)0, lib); 3185 3186 int count = 0; 3187 int result = dl_iterate_phdr(dl_phdr_callback, &count); 3188 ASSERT_GT(count, 0); 3189 3190 dlclose(lib); 3191 } 3192 3193 TEST(MemorySanitizer, dlopen) { 3194 char path[kMaxPathLength]; 3195 GetPathToLoadable(path, sizeof(path)); 3196 3197 // We need to clear shadow for globals when doing dlopen. In order to test 3198 // this, we have to poison the shadow for the DSO before we load it. In 3199 // general this is difficult, but the loader tends to reload things in the 3200 // same place, so we open, close, and then reopen. The global should always 3201 // start out clean after dlopen. 3202 for (int i = 0; i < 2; i++) { 3203 void *lib = dlopen(path, RTLD_LAZY); 3204 if (lib == NULL) { 3205 printf("dlerror: %s\n", dlerror()); 3206 ASSERT_TRUE(lib != NULL); 3207 } 3208 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 3209 ASSERT_TRUE(get_dso_global != NULL); 3210 void **dso_global = get_dso_global(); 3211 EXPECT_NOT_POISONED(*dso_global); 3212 __msan_poison(dso_global, sizeof(*dso_global)); 3213 EXPECT_POISONED(*dso_global); 3214 dlclose(lib); 3215 } 3216 } 3217 3218 // Regression test for a crash in dlopen() interceptor. 3219 TEST(MemorySanitizer, dlopenFailed) { 3220 const char *path = "/libmsan_loadable_does_not_exist.so"; 3221 void *lib = dlopen(path, RTLD_LAZY); 3222 ASSERT_TRUE(lib == NULL); 3223 } 3224 3225 #endif // MSAN_TEST_DISABLE_DLOPEN 3226 3227 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 3228 TEST(MemorySanitizer, sched_getaffinity) { 3229 cpu_set_t mask; 3230 if (sched_getaffinity(getpid(), sizeof(mask), &mask) == 0) 3231 EXPECT_NOT_POISONED(mask); 3232 else { 3233 // The call to sched_getaffinity() may have failed because the Affinity 3234 // mask is too small for the number of CPUs on the system (i.e. the 3235 // system has more than 1024 CPUs). Allocate a mask large enough for 3236 // twice as many CPUs. 3237 cpu_set_t *DynAffinity; 3238 DynAffinity = CPU_ALLOC(2048); 3239 int res = sched_getaffinity(getpid(), CPU_ALLOC_SIZE(2048), DynAffinity); 3240 ASSERT_EQ(0, res); 3241 EXPECT_NOT_POISONED(*DynAffinity); 3242 } 3243 } 3244 #endif 3245 3246 TEST(MemorySanitizer, scanf) { 3247 const char *input = "42 hello"; 3248 int* d = new int; 3249 char* s = new char[7]; 3250 int res = sscanf(input, "%d %5s", d, s); 3251 printf("res %d\n", res); 3252 ASSERT_EQ(res, 2); 3253 EXPECT_NOT_POISONED(*d); 3254 EXPECT_NOT_POISONED(s[0]); 3255 EXPECT_NOT_POISONED(s[1]); 3256 EXPECT_NOT_POISONED(s[2]); 3257 EXPECT_NOT_POISONED(s[3]); 3258 EXPECT_NOT_POISONED(s[4]); 3259 EXPECT_NOT_POISONED(s[5]); 3260 EXPECT_POISONED(s[6]); 3261 delete[] s; 3262 delete d; 3263 } 3264 3265 static void *SimpleThread_threadfn(void* data) { 3266 return new int; 3267 } 3268 3269 TEST(MemorySanitizer, SimpleThread) { 3270 pthread_t t; 3271 void *p; 3272 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 3273 ASSERT_EQ(0, res); 3274 EXPECT_NOT_POISONED(t); 3275 res = pthread_join(t, &p); 3276 ASSERT_EQ(0, res); 3277 EXPECT_NOT_POISONED(p); 3278 delete (int*)p; 3279 } 3280 3281 static void *SmallStackThread_threadfn(void* data) { 3282 return 0; 3283 } 3284 3285 static int GetThreadStackMin() { 3286 #ifdef PTHREAD_STACK_MIN 3287 return PTHREAD_STACK_MIN; 3288 #else 3289 return 0; 3290 #endif 3291 } 3292 3293 TEST(MemorySanitizer, SmallStackThread) { 3294 pthread_attr_t attr; 3295 pthread_t t; 3296 void *p; 3297 int res; 3298 res = pthread_attr_init(&attr); 3299 ASSERT_EQ(0, res); 3300 res = pthread_attr_setstacksize(&attr, 3301 std::max(GetThreadStackMin(), 64 * 1024)); 3302 ASSERT_EQ(0, res); 3303 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 3304 ASSERT_EQ(0, res); 3305 res = pthread_join(t, &p); 3306 ASSERT_EQ(0, res); 3307 res = pthread_attr_destroy(&attr); 3308 ASSERT_EQ(0, res); 3309 } 3310 3311 TEST(MemorySanitizer, SmallPreAllocatedStackThread) { 3312 pthread_attr_t attr; 3313 pthread_t t; 3314 int res; 3315 res = pthread_attr_init(&attr); 3316 ASSERT_EQ(0, res); 3317 void *stack; 3318 const size_t kStackSize = std::max(GetThreadStackMin(), 32 * 1024); 3319 res = posix_memalign(&stack, 4096, kStackSize); 3320 ASSERT_EQ(0, res); 3321 res = pthread_attr_setstack(&attr, stack, kStackSize); 3322 ASSERT_EQ(0, res); 3323 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 3324 EXPECT_EQ(0, res); 3325 res = pthread_join(t, NULL); 3326 ASSERT_EQ(0, res); 3327 res = pthread_attr_destroy(&attr); 3328 ASSERT_EQ(0, res); 3329 } 3330 3331 TEST(MemorySanitizer, pthread_attr_get) { 3332 pthread_attr_t attr; 3333 int res; 3334 res = pthread_attr_init(&attr); 3335 ASSERT_EQ(0, res); 3336 { 3337 int v; 3338 res = pthread_attr_getdetachstate(&attr, &v); 3339 ASSERT_EQ(0, res); 3340 EXPECT_NOT_POISONED(v); 3341 } 3342 { 3343 size_t v; 3344 res = pthread_attr_getguardsize(&attr, &v); 3345 ASSERT_EQ(0, res); 3346 EXPECT_NOT_POISONED(v); 3347 } 3348 { 3349 struct sched_param v; 3350 res = pthread_attr_getschedparam(&attr, &v); 3351 ASSERT_EQ(0, res); 3352 EXPECT_NOT_POISONED(v); 3353 } 3354 { 3355 int v; 3356 res = pthread_attr_getschedpolicy(&attr, &v); 3357 ASSERT_EQ(0, res); 3358 EXPECT_NOT_POISONED(v); 3359 } 3360 { 3361 int v; 3362 res = pthread_attr_getinheritsched(&attr, &v); 3363 ASSERT_EQ(0, res); 3364 EXPECT_NOT_POISONED(v); 3365 } 3366 { 3367 int v; 3368 res = pthread_attr_getscope(&attr, &v); 3369 ASSERT_EQ(0, res); 3370 EXPECT_NOT_POISONED(v); 3371 } 3372 { 3373 size_t v; 3374 res = pthread_attr_getstacksize(&attr, &v); 3375 ASSERT_EQ(0, res); 3376 EXPECT_NOT_POISONED(v); 3377 } 3378 { 3379 void *v; 3380 size_t w; 3381 res = pthread_attr_getstack(&attr, &v, &w); 3382 ASSERT_EQ(0, res); 3383 EXPECT_NOT_POISONED(v); 3384 EXPECT_NOT_POISONED(w); 3385 } 3386 #ifdef __GLIBC__ 3387 { 3388 cpu_set_t v; 3389 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 3390 ASSERT_EQ(0, res); 3391 EXPECT_NOT_POISONED(v); 3392 } 3393 #endif 3394 res = pthread_attr_destroy(&attr); 3395 ASSERT_EQ(0, res); 3396 } 3397 3398 TEST(MemorySanitizer, pthread_getschedparam) { 3399 int policy; 3400 struct sched_param param; 3401 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 3402 ASSERT_EQ(0, res); 3403 EXPECT_NOT_POISONED(policy); 3404 EXPECT_NOT_POISONED(param.sched_priority); 3405 } 3406 3407 TEST(MemorySanitizer, pthread_key_create) { 3408 pthread_key_t key; 3409 int res = pthread_key_create(&key, NULL); 3410 ASSERT_EQ(0, res); 3411 EXPECT_NOT_POISONED(key); 3412 res = pthread_key_delete(key); 3413 ASSERT_EQ(0, res); 3414 } 3415 3416 namespace { 3417 struct SignalCondArg { 3418 pthread_cond_t* cond; 3419 pthread_mutex_t* mu; 3420 bool broadcast; 3421 }; 3422 3423 void *SignalCond(void *param) { 3424 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 3425 pthread_mutex_lock(arg->mu); 3426 if (arg->broadcast) 3427 pthread_cond_broadcast(arg->cond); 3428 else 3429 pthread_cond_signal(arg->cond); 3430 pthread_mutex_unlock(arg->mu); 3431 return 0; 3432 } 3433 } // namespace 3434 3435 TEST(MemorySanitizer, pthread_cond_wait) { 3436 pthread_cond_t cond; 3437 pthread_mutex_t mu; 3438 SignalCondArg args = {&cond, &mu, false}; 3439 pthread_cond_init(&cond, 0); 3440 pthread_mutex_init(&mu, 0); 3441 pthread_mutex_lock(&mu); 3442 3443 // signal 3444 pthread_t thr; 3445 pthread_create(&thr, 0, SignalCond, &args); 3446 int res = pthread_cond_wait(&cond, &mu); 3447 ASSERT_EQ(0, res); 3448 pthread_join(thr, 0); 3449 3450 // broadcast 3451 args.broadcast = true; 3452 pthread_create(&thr, 0, SignalCond, &args); 3453 res = pthread_cond_wait(&cond, &mu); 3454 ASSERT_EQ(0, res); 3455 pthread_join(thr, 0); 3456 3457 pthread_mutex_unlock(&mu); 3458 pthread_mutex_destroy(&mu); 3459 pthread_cond_destroy(&cond); 3460 } 3461 3462 TEST(MemorySanitizer, tmpnam) { 3463 char s[L_tmpnam]; 3464 char *res = tmpnam(s); 3465 ASSERT_EQ(s, res); 3466 EXPECT_NOT_POISONED(strlen(res)); 3467 } 3468 3469 TEST(MemorySanitizer, tempnam) { 3470 char *res = tempnam(NULL, "zzz"); 3471 EXPECT_NOT_POISONED(strlen(res)); 3472 free(res); 3473 } 3474 3475 TEST(MemorySanitizer, posix_memalign) { 3476 void *p; 3477 EXPECT_POISONED(p); 3478 int res = posix_memalign(&p, 4096, 13); 3479 ASSERT_EQ(0, res); 3480 EXPECT_NOT_POISONED(p); 3481 EXPECT_EQ(0U, (uintptr_t)p % 4096); 3482 free(p); 3483 } 3484 3485 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 3486 TEST(MemorySanitizer, memalign) { 3487 void *p = memalign(4096, 13); 3488 EXPECT_EQ(0U, (uintptr_t)p % 4096); 3489 free(p); 3490 } 3491 #endif 3492 3493 TEST(MemorySanitizer, valloc) { 3494 void *a = valloc(100); 3495 uintptr_t PageSize = GetPageSize(); 3496 EXPECT_EQ(0U, (uintptr_t)a % PageSize); 3497 free(a); 3498 } 3499 3500 #ifdef __GLIBC__ 3501 TEST(MemorySanitizer, pvalloc) { 3502 uintptr_t PageSize = GetPageSize(); 3503 void *p = pvalloc(PageSize + 100); 3504 EXPECT_EQ(0U, (uintptr_t)p % PageSize); 3505 EXPECT_EQ(2 * PageSize, __sanitizer_get_allocated_size(p)); 3506 free(p); 3507 3508 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 3509 EXPECT_EQ(0U, (uintptr_t)p % PageSize); 3510 EXPECT_EQ(PageSize, __sanitizer_get_allocated_size(p)); 3511 free(p); 3512 } 3513 #endif 3514 3515 TEST(MemorySanitizer, inet_pton) { 3516 const char *s = "1:0:0:0:0:0:0:8"; 3517 unsigned char buf[sizeof(struct in6_addr)]; 3518 int res = inet_pton(AF_INET6, s, buf); 3519 ASSERT_EQ(1, res); 3520 EXPECT_NOT_POISONED(buf[0]); 3521 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 3522 3523 char s_out[INET6_ADDRSTRLEN]; 3524 EXPECT_POISONED(s_out[3]); 3525 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 3526 ASSERT_NE((void*)0, q); 3527 EXPECT_NOT_POISONED(s_out[3]); 3528 } 3529 3530 TEST(MemorySanitizer, inet_aton) { 3531 const char *s = "127.0.0.1"; 3532 struct in_addr in[2]; 3533 int res = inet_aton(s, in); 3534 ASSERT_NE(0, res); 3535 EXPECT_NOT_POISONED(in[0]); 3536 EXPECT_POISONED(*(char *)(in + 1)); 3537 } 3538 3539 TEST(MemorySanitizer, uname) { 3540 struct utsname u; 3541 int res = uname(&u); 3542 ASSERT_EQ(0, res); 3543 EXPECT_NOT_POISONED(strlen(u.sysname)); 3544 EXPECT_NOT_POISONED(strlen(u.nodename)); 3545 EXPECT_NOT_POISONED(strlen(u.release)); 3546 EXPECT_NOT_POISONED(strlen(u.version)); 3547 EXPECT_NOT_POISONED(strlen(u.machine)); 3548 } 3549 3550 TEST(MemorySanitizer, gethostname) { 3551 char buf[1000]; 3552 EXPECT_EQ(-1, gethostname(buf, 1)); 3553 EXPECT_EQ(ENAMETOOLONG, errno); 3554 EXPECT_NOT_POISONED(buf[0]); 3555 EXPECT_POISONED(buf[1]); 3556 3557 __msan_poison(buf, sizeof(buf)); 3558 EXPECT_EQ(0, gethostname(buf, sizeof(buf))); 3559 EXPECT_NOT_POISONED(strlen(buf)); 3560 } 3561 3562 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 3563 TEST(MemorySanitizer, sysinfo) { 3564 struct sysinfo info; 3565 int res = sysinfo(&info); 3566 ASSERT_EQ(0, res); 3567 EXPECT_NOT_POISONED(info); 3568 } 3569 #endif 3570 3571 TEST(MemorySanitizer, getpwuid) { 3572 struct passwd *p = getpwuid(0); // root 3573 ASSERT_TRUE(p != NULL); 3574 EXPECT_NOT_POISONED(p->pw_name); 3575 ASSERT_TRUE(p->pw_name != NULL); 3576 EXPECT_NOT_POISONED(p->pw_name[0]); 3577 EXPECT_NOT_POISONED(p->pw_uid); 3578 ASSERT_EQ(0U, p->pw_uid); 3579 } 3580 3581 TEST(MemorySanitizer, getpwuid_r) { 3582 struct passwd pwd; 3583 struct passwd *pwdres; 3584 char buf[10000]; 3585 int res = getpwuid_r(0, &pwd, buf, sizeof(buf), &pwdres); 3586 ASSERT_EQ(0, res); 3587 EXPECT_NOT_POISONED(pwd.pw_name); 3588 ASSERT_TRUE(pwd.pw_name != NULL); 3589 EXPECT_NOT_POISONED(pwd.pw_name[0]); 3590 EXPECT_NOT_POISONED(pwd.pw_uid); 3591 ASSERT_EQ(0U, pwd.pw_uid); 3592 EXPECT_NOT_POISONED(pwdres); 3593 } 3594 3595 TEST(MemorySanitizer, getpwnam_r) { 3596 struct passwd pwd; 3597 struct passwd *pwdres; 3598 char buf[10000]; 3599 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 3600 ASSERT_EQ(0, res); 3601 EXPECT_NOT_POISONED(pwd.pw_name); 3602 ASSERT_TRUE(pwd.pw_name != NULL); 3603 EXPECT_NOT_POISONED(pwd.pw_name[0]); 3604 EXPECT_NOT_POISONED(pwd.pw_uid); 3605 ASSERT_EQ(0U, pwd.pw_uid); 3606 EXPECT_NOT_POISONED(pwdres); 3607 } 3608 3609 TEST(MemorySanitizer, getpwnam_r_positive) { 3610 struct passwd pwd; 3611 struct passwd *pwdres; 3612 char s[5]; 3613 strncpy(s, "abcd", 5); 3614 __msan_poison(s, 5); 3615 char buf[10000]; 3616 EXPECT_UMR(getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 3617 } 3618 3619 TEST(MemorySanitizer, getgrnam_r) { 3620 struct group grp; 3621 struct group *grpres; 3622 char buf[10000]; 3623 int res = getgrnam_r(SUPERUSER_GROUP, &grp, buf, sizeof(buf), &grpres); 3624 ASSERT_EQ(0, res); 3625 // Note that getgrnam_r() returns 0 if the matching group is not found. 3626 ASSERT_NE(nullptr, grpres); 3627 EXPECT_NOT_POISONED(grp.gr_name); 3628 ASSERT_TRUE(grp.gr_name != NULL); 3629 EXPECT_NOT_POISONED(grp.gr_name[0]); 3630 EXPECT_NOT_POISONED(grp.gr_gid); 3631 EXPECT_NOT_POISONED(grpres); 3632 } 3633 3634 TEST(MemorySanitizer, getpwent) { 3635 setpwent(); 3636 struct passwd *p = getpwent(); 3637 ASSERT_TRUE(p != NULL); 3638 EXPECT_NOT_POISONED(p->pw_name); 3639 ASSERT_TRUE(p->pw_name != NULL); 3640 EXPECT_NOT_POISONED(p->pw_name[0]); 3641 EXPECT_NOT_POISONED(p->pw_uid); 3642 } 3643 3644 #ifndef MUSL 3645 TEST(MemorySanitizer, getpwent_r) { 3646 struct passwd pwd; 3647 struct passwd *pwdres; 3648 char buf[10000]; 3649 setpwent(); 3650 int res = getpwent_r(&pwd, buf, sizeof(buf), &pwdres); 3651 ASSERT_EQ(0, res); 3652 EXPECT_NOT_POISONED(pwd.pw_name); 3653 ASSERT_TRUE(pwd.pw_name != NULL); 3654 EXPECT_NOT_POISONED(pwd.pw_name[0]); 3655 EXPECT_NOT_POISONED(pwd.pw_uid); 3656 EXPECT_NOT_POISONED(pwdres); 3657 } 3658 #endif 3659 3660 #ifdef __GLIBC__ 3661 TEST(MemorySanitizer, fgetpwent) { 3662 FILE *fp = fopen("/etc/passwd", "r"); 3663 struct passwd *p = fgetpwent(fp); 3664 ASSERT_TRUE(p != NULL); 3665 EXPECT_NOT_POISONED(p->pw_name); 3666 ASSERT_TRUE(p->pw_name != NULL); 3667 EXPECT_NOT_POISONED(p->pw_name[0]); 3668 EXPECT_NOT_POISONED(p->pw_uid); 3669 fclose(fp); 3670 } 3671 #endif 3672 3673 TEST(MemorySanitizer, getgrent) { 3674 setgrent(); 3675 struct group *p = getgrent(); 3676 ASSERT_TRUE(p != NULL); 3677 EXPECT_NOT_POISONED(p->gr_name); 3678 ASSERT_TRUE(p->gr_name != NULL); 3679 EXPECT_NOT_POISONED(p->gr_name[0]); 3680 EXPECT_NOT_POISONED(p->gr_gid); 3681 } 3682 3683 #ifdef __GLIBC__ 3684 TEST(MemorySanitizer, fgetgrent) { 3685 FILE *fp = fopen("/etc/group", "r"); 3686 struct group *grp = fgetgrent(fp); 3687 ASSERT_TRUE(grp != NULL); 3688 EXPECT_NOT_POISONED(grp->gr_name); 3689 ASSERT_TRUE(grp->gr_name != NULL); 3690 EXPECT_NOT_POISONED(grp->gr_name[0]); 3691 EXPECT_NOT_POISONED(grp->gr_gid); 3692 for (char **p = grp->gr_mem; *p; ++p) { 3693 EXPECT_NOT_POISONED((*p)[0]); 3694 EXPECT_TRUE(strlen(*p) > 0); 3695 } 3696 fclose(fp); 3697 } 3698 #endif 3699 3700 #if defined(__GLIBC__) || defined(__FreeBSD__) 3701 TEST(MemorySanitizer, getgrent_r) { 3702 struct group grp; 3703 struct group *grpres; 3704 char buf[10000]; 3705 setgrent(); 3706 int res = getgrent_r(&grp, buf, sizeof(buf), &grpres); 3707 ASSERT_EQ(0, res); 3708 EXPECT_NOT_POISONED(grp.gr_name); 3709 ASSERT_TRUE(grp.gr_name != NULL); 3710 EXPECT_NOT_POISONED(grp.gr_name[0]); 3711 EXPECT_NOT_POISONED(grp.gr_gid); 3712 EXPECT_NOT_POISONED(grpres); 3713 } 3714 #endif 3715 3716 #ifdef __GLIBC__ 3717 TEST(MemorySanitizer, fgetgrent_r) { 3718 FILE *fp = fopen("/etc/group", "r"); 3719 struct group grp; 3720 struct group *grpres; 3721 char buf[10000]; 3722 setgrent(); 3723 int res = fgetgrent_r(fp, &grp, buf, sizeof(buf), &grpres); 3724 ASSERT_EQ(0, res); 3725 EXPECT_NOT_POISONED(grp.gr_name); 3726 ASSERT_TRUE(grp.gr_name != NULL); 3727 EXPECT_NOT_POISONED(grp.gr_name[0]); 3728 EXPECT_NOT_POISONED(grp.gr_gid); 3729 EXPECT_NOT_POISONED(grpres); 3730 fclose(fp); 3731 } 3732 #endif 3733 3734 TEST(MemorySanitizer, getgroups) { 3735 int n = getgroups(0, 0); 3736 gid_t *gids = new gid_t[n]; 3737 int res = getgroups(n, gids); 3738 ASSERT_EQ(n, res); 3739 for (int i = 0; i < n; ++i) 3740 EXPECT_NOT_POISONED(gids[i]); 3741 } 3742 3743 TEST(MemorySanitizer, getgroups_zero) { 3744 gid_t group; 3745 int n = getgroups(0, &group); 3746 ASSERT_GE(n, 0); 3747 } 3748 3749 TEST(MemorySanitizer, getgroups_negative) { 3750 gid_t group; 3751 int n = getgroups(-1, 0); 3752 ASSERT_EQ(-1, n); 3753 3754 n = getgroups(-1, 0); 3755 ASSERT_EQ(-1, n); 3756 } 3757 3758 TEST(MemorySanitizer, wordexp_empty) { 3759 wordexp_t w; 3760 int res = wordexp("", &w, 0); 3761 ASSERT_EQ(0, res); 3762 ASSERT_EQ(0U, w.we_wordc); 3763 ASSERT_STREQ(nullptr, w.we_wordv[0]); 3764 } 3765 3766 TEST(MemorySanitizer, wordexp) { 3767 wordexp_t w; 3768 int res = wordexp("a b c", &w, 0); 3769 ASSERT_EQ(0, res); 3770 ASSERT_EQ(3U, w.we_wordc); 3771 ASSERT_STREQ("a", w.we_wordv[0]); 3772 ASSERT_STREQ("b", w.we_wordv[1]); 3773 ASSERT_STREQ("c", w.we_wordv[2]); 3774 } 3775 3776 TEST(MemorySanitizer, wordexp_initial_offset) { 3777 wordexp_t w; 3778 w.we_offs = 1; 3779 int res = wordexp("a b c", &w, WRDE_DOOFFS); 3780 ASSERT_EQ(0, res); 3781 ASSERT_EQ(3U, w.we_wordc); 3782 ASSERT_EQ(nullptr, w.we_wordv[0]); 3783 ASSERT_STREQ("a", w.we_wordv[1]); 3784 ASSERT_STREQ("b", w.we_wordv[2]); 3785 ASSERT_STREQ("c", w.we_wordv[3]); 3786 } 3787 3788 template<class T> 3789 static bool applySlt(T value, T shadow) { 3790 __msan_partial_poison(&value, &shadow, sizeof(T)); 3791 volatile bool zzz = true; 3792 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 3793 // a shift-and-trunc to get at the highest bit. 3794 volatile bool v = value < 0 || zzz; 3795 return v; 3796 } 3797 3798 TEST(MemorySanitizer, SignedCompareWithZero) { 3799 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 3800 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 3801 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 3802 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 3803 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 3804 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 3805 } 3806 3807 template <class T, class S> 3808 static T poisoned(T Va, S Sa) { 3809 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 3810 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 3811 T a; 3812 a = Va; 3813 __msan_partial_poison(&a, &Sa, sizeof(T)); 3814 return a; 3815 } 3816 3817 TEST(MemorySanitizer, ICmpRelational) { 3818 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 3819 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 3820 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 3821 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 3822 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 3823 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 3824 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3825 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 3826 poisoned(-1, 0xFFFFFFFFU)); 3827 3828 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 3829 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 3830 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 3831 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 3832 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 3833 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 3834 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3835 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 3836 poisoned(-1, 0xFFFFFFFFU)); 3837 3838 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 3839 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 3840 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 3841 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 3842 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 3843 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 3844 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3845 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 3846 poisoned(-1, 0xFFFFFFFFU)); 3847 3848 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 3849 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 3850 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 3851 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 3852 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 3853 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 3854 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3855 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 3856 poisoned(-1, 0xFFFFFFFFU)); 3857 3858 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 3859 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 3860 // Note that "icmp op X, Y" is approximated with "or shadow(X), shadow(Y)" 3861 // and therefore may generate false positives in some cases, e.g. the 3862 // following one: 3863 // EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 3864 } 3865 3866 #if MSAN_HAS_M128 3867 TEST(MemorySanitizer, ICmpVectorRelational) { 3868 EXPECT_NOT_POISONED( 3869 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 3870 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 3871 EXPECT_NOT_POISONED( 3872 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 3873 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 3874 EXPECT_POISONED( 3875 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 3876 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 3877 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 3878 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 3879 } 3880 3881 TEST(MemorySanitizer, stmxcsr_ldmxcsr) { 3882 U4 x = _mm_getcsr(); 3883 EXPECT_NOT_POISONED(x); 3884 3885 _mm_setcsr(x); 3886 3887 __msan_poison(&x, sizeof(x)); 3888 U4 origin = __LINE__; 3889 __msan_set_origin(&x, sizeof(x), origin); 3890 EXPECT_UMR_O(_mm_setcsr(x), origin); 3891 } 3892 #endif 3893 3894 // Volatile bitfield store is implemented as load-mask-store 3895 // Test that we don't warn on the store of (uninitialized) padding. 3896 struct VolatileBitfieldStruct { 3897 volatile unsigned x : 1; 3898 unsigned y : 1; 3899 }; 3900 3901 TEST(MemorySanitizer, VolatileBitfield) { 3902 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 3903 S->x = 1; 3904 EXPECT_NOT_POISONED((unsigned)S->x); 3905 EXPECT_POISONED((unsigned)S->y); 3906 } 3907 3908 TEST(MemorySanitizer, UnalignedLoad) { 3909 char x[32] __attribute__((aligned(8))); 3910 U4 origin = __LINE__; 3911 for (unsigned i = 0; i < sizeof(x) / 4; ++i) 3912 __msan_set_origin(x + 4 * i, 4, origin + i); 3913 3914 memset(x + 8, 0, 16); 3915 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 6), origin + 1); 3916 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 7), origin + 1); 3917 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 8)); 3918 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 9)); 3919 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 22)); 3920 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 23), origin + 6); 3921 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 24), origin + 6); 3922 3923 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 4), origin + 1); 3924 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 7), origin + 1); 3925 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 8)); 3926 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 9)); 3927 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 20)); 3928 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 21), origin + 6); 3929 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 24), origin + 6); 3930 3931 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x), origin); 3932 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 1), origin); 3933 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 7), origin + 1); 3934 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 8)); 3935 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 9)); 3936 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 16)); 3937 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 17), origin + 6); 3938 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 21), origin + 6); 3939 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 24), origin + 6); 3940 } 3941 3942 TEST(MemorySanitizer, UnalignedStore16) { 3943 char x[5] __attribute__((aligned(4))); 3944 U2 y2 = 0; 3945 U4 origin = __LINE__; 3946 __msan_poison(&y2, 1); 3947 __msan_set_origin(&y2, 1, origin); 3948 3949 __sanitizer_unaligned_store16(x + 1, y2); 3950 EXPECT_POISONED_O(x[0], origin); 3951 EXPECT_POISONED_O(x[1], origin); 3952 EXPECT_NOT_POISONED(x[2]); 3953 EXPECT_POISONED_O(x[3], origin); 3954 } 3955 3956 TEST(MemorySanitizer, UnalignedStore32) { 3957 char x[8] __attribute__((aligned(4))); 3958 U4 y4 = 0; 3959 U4 origin = __LINE__; 3960 __msan_poison(&y4, 2); 3961 __msan_set_origin(&y4, 2, origin); 3962 3963 __sanitizer_unaligned_store32(x + 3, y4); 3964 EXPECT_POISONED_O(x[0], origin); 3965 EXPECT_POISONED_O(x[1], origin); 3966 EXPECT_POISONED_O(x[2], origin); 3967 EXPECT_POISONED_O(x[3], origin); 3968 EXPECT_POISONED_O(x[4], origin); 3969 EXPECT_NOT_POISONED(x[5]); 3970 EXPECT_NOT_POISONED(x[6]); 3971 EXPECT_POISONED_O(x[7], origin); 3972 } 3973 3974 TEST(MemorySanitizer, UnalignedStore64) { 3975 char x[16] __attribute__((aligned(8))); 3976 U8 y8 = 0; 3977 U4 origin = __LINE__; 3978 __msan_poison(&y8, 3); 3979 __msan_poison(((char *)&y8) + sizeof(y8) - 2, 1); 3980 __msan_set_origin(&y8, 8, origin); 3981 3982 __sanitizer_unaligned_store64(x + 3, y8); 3983 EXPECT_POISONED_O(x[0], origin); 3984 EXPECT_POISONED_O(x[1], origin); 3985 EXPECT_POISONED_O(x[2], origin); 3986 EXPECT_POISONED_O(x[3], origin); 3987 EXPECT_POISONED_O(x[4], origin); 3988 EXPECT_POISONED_O(x[5], origin); 3989 EXPECT_NOT_POISONED(x[6]); 3990 EXPECT_NOT_POISONED(x[7]); 3991 EXPECT_NOT_POISONED(x[8]); 3992 EXPECT_POISONED_O(x[9], origin); 3993 EXPECT_NOT_POISONED(x[10]); 3994 EXPECT_POISONED_O(x[11], origin); 3995 } 3996 3997 TEST(MemorySanitizer, UnalignedStore16_precise) { 3998 char x[8] __attribute__((aligned(4))); 3999 U2 y = 0; 4000 U4 originx1 = __LINE__; 4001 U4 originx2 = __LINE__; 4002 U4 originy = __LINE__; 4003 __msan_poison(x, sizeof(x)); 4004 __msan_set_origin(x, 4, originx1); 4005 __msan_set_origin(x + 4, 4, originx2); 4006 __msan_poison(((char *)&y) + 1, 1); 4007 __msan_set_origin(&y, sizeof(y), originy); 4008 4009 __sanitizer_unaligned_store16(x + 3, y); 4010 EXPECT_POISONED_O(x[0], originx1); 4011 EXPECT_POISONED_O(x[1], originx1); 4012 EXPECT_POISONED_O(x[2], originx1); 4013 EXPECT_NOT_POISONED(x[3]); 4014 EXPECT_POISONED_O(x[4], originy); 4015 EXPECT_POISONED_O(x[5], originy); 4016 EXPECT_POISONED_O(x[6], originy); 4017 EXPECT_POISONED_O(x[7], originy); 4018 } 4019 4020 TEST(MemorySanitizer, UnalignedStore16_precise2) { 4021 char x[8] __attribute__((aligned(4))); 4022 U2 y = 0; 4023 U4 originx1 = __LINE__; 4024 U4 originx2 = __LINE__; 4025 U4 originy = __LINE__; 4026 __msan_poison(x, sizeof(x)); 4027 __msan_set_origin(x, 4, originx1); 4028 __msan_set_origin(x + 4, 4, originx2); 4029 __msan_poison(((char *)&y), 1); 4030 __msan_set_origin(&y, sizeof(y), originy); 4031 4032 __sanitizer_unaligned_store16(x + 3, y); 4033 EXPECT_POISONED_O(x[0], originy); 4034 EXPECT_POISONED_O(x[1], originy); 4035 EXPECT_POISONED_O(x[2], originy); 4036 EXPECT_POISONED_O(x[3], originy); 4037 EXPECT_NOT_POISONED(x[4]); 4038 EXPECT_POISONED_O(x[5], originx2); 4039 EXPECT_POISONED_O(x[6], originx2); 4040 EXPECT_POISONED_O(x[7], originx2); 4041 } 4042 4043 TEST(MemorySanitizer, UnalignedStore64_precise) { 4044 char x[12] __attribute__((aligned(8))); 4045 U8 y = 0; 4046 U4 originx1 = __LINE__; 4047 U4 originx2 = __LINE__; 4048 U4 originx3 = __LINE__; 4049 U4 originy = __LINE__; 4050 __msan_poison(x, sizeof(x)); 4051 __msan_set_origin(x, 4, originx1); 4052 __msan_set_origin(x + 4, 4, originx2); 4053 __msan_set_origin(x + 8, 4, originx3); 4054 __msan_poison(((char *)&y) + 1, 1); 4055 __msan_poison(((char *)&y) + 7, 1); 4056 __msan_set_origin(&y, sizeof(y), originy); 4057 4058 __sanitizer_unaligned_store64(x + 2, y); 4059 EXPECT_POISONED_O(x[0], originy); 4060 EXPECT_POISONED_O(x[1], originy); 4061 EXPECT_NOT_POISONED(x[2]); 4062 EXPECT_POISONED_O(x[3], originy); 4063 4064 EXPECT_NOT_POISONED(x[4]); 4065 EXPECT_NOT_POISONED(x[5]); 4066 EXPECT_NOT_POISONED(x[6]); 4067 EXPECT_NOT_POISONED(x[7]); 4068 4069 EXPECT_NOT_POISONED(x[8]); 4070 EXPECT_POISONED_O(x[9], originy); 4071 EXPECT_POISONED_O(x[10], originy); 4072 EXPECT_POISONED_O(x[11], originy); 4073 } 4074 4075 TEST(MemorySanitizer, UnalignedStore64_precise2) { 4076 char x[12] __attribute__((aligned(8))); 4077 U8 y = 0; 4078 U4 originx1 = __LINE__; 4079 U4 originx2 = __LINE__; 4080 U4 originx3 = __LINE__; 4081 U4 originy = __LINE__; 4082 __msan_poison(x, sizeof(x)); 4083 __msan_set_origin(x, 4, originx1); 4084 __msan_set_origin(x + 4, 4, originx2); 4085 __msan_set_origin(x + 8, 4, originx3); 4086 __msan_poison(((char *)&y) + 3, 3); 4087 __msan_set_origin(&y, sizeof(y), originy); 4088 4089 __sanitizer_unaligned_store64(x + 2, y); 4090 EXPECT_POISONED_O(x[0], originx1); 4091 EXPECT_POISONED_O(x[1], originx1); 4092 EXPECT_NOT_POISONED(x[2]); 4093 EXPECT_NOT_POISONED(x[3]); 4094 4095 EXPECT_NOT_POISONED(x[4]); 4096 EXPECT_POISONED_O(x[5], originy); 4097 EXPECT_POISONED_O(x[6], originy); 4098 EXPECT_POISONED_O(x[7], originy); 4099 4100 EXPECT_NOT_POISONED(x[8]); 4101 EXPECT_NOT_POISONED(x[9]); 4102 EXPECT_POISONED_O(x[10], originx3); 4103 EXPECT_POISONED_O(x[11], originx3); 4104 } 4105 4106 #if (defined(__x86_64__) && defined(__clang__)) 4107 namespace { 4108 typedef U1 V16x8 __attribute__((__vector_size__(16))); 4109 typedef U2 V8x16 __attribute__((__vector_size__(16))); 4110 typedef U4 V4x32 __attribute__((__vector_size__(16))); 4111 typedef U8 V2x64 __attribute__((__vector_size__(16))); 4112 typedef U4 V8x32 __attribute__((__vector_size__(32))); 4113 typedef U8 V4x64 __attribute__((__vector_size__(32))); 4114 typedef U4 V2x32 __attribute__((__vector_size__(8))); 4115 typedef U2 V4x16 __attribute__((__vector_size__(8))); 4116 typedef U1 V8x8 __attribute__((__vector_size__(8))); 4117 4118 V8x16 shift_sse2_left_scalar(V8x16 x, U4 y) { 4119 return _mm_slli_epi16(x, y); 4120 } 4121 4122 V8x16 shift_sse2_left(V8x16 x, V8x16 y) { 4123 return _mm_sll_epi16(x, y); 4124 } 4125 4126 TEST(VectorShiftTest, sse2_left_scalar) { 4127 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; 4128 V8x16 u = shift_sse2_left_scalar(v, 2); 4129 EXPECT_POISONED(u[0]); 4130 EXPECT_POISONED(u[1]); 4131 EXPECT_NOT_POISONED(u[0] | (3U << 2)); 4132 EXPECT_NOT_POISONED(u[1] | (7U << 2)); 4133 u[0] = u[1] = 0; 4134 EXPECT_NOT_POISONED(u); 4135 } 4136 4137 TEST(VectorShiftTest, sse2_left_scalar_by_uninit) { 4138 V8x16 v = {0, 1, 2, 3, 4, 5, 6, 7}; 4139 V8x16 u = shift_sse2_left_scalar(v, Poisoned<U4>()); 4140 EXPECT_POISONED(u[0]); 4141 EXPECT_POISONED(u[1]); 4142 EXPECT_POISONED(u[2]); 4143 EXPECT_POISONED(u[3]); 4144 EXPECT_POISONED(u[4]); 4145 EXPECT_POISONED(u[5]); 4146 EXPECT_POISONED(u[6]); 4147 EXPECT_POISONED(u[7]); 4148 } 4149 4150 TEST(VectorShiftTest, sse2_left) { 4151 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; 4152 // Top 64 bits of shift count don't affect the result. 4153 V2x64 s = {2, Poisoned<U8>()}; 4154 V8x16 u = shift_sse2_left(v, s); 4155 EXPECT_POISONED(u[0]); 4156 EXPECT_POISONED(u[1]); 4157 EXPECT_NOT_POISONED(u[0] | (3U << 2)); 4158 EXPECT_NOT_POISONED(u[1] | (7U << 2)); 4159 u[0] = u[1] = 0; 4160 EXPECT_NOT_POISONED(u); 4161 } 4162 4163 TEST(VectorShiftTest, sse2_left_by_uninit) { 4164 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; 4165 V2x64 s = {Poisoned<U8>(), Poisoned<U8>()}; 4166 V8x16 u = shift_sse2_left(v, s); 4167 EXPECT_POISONED(u[0]); 4168 EXPECT_POISONED(u[1]); 4169 EXPECT_POISONED(u[2]); 4170 EXPECT_POISONED(u[3]); 4171 EXPECT_POISONED(u[4]); 4172 EXPECT_POISONED(u[5]); 4173 EXPECT_POISONED(u[6]); 4174 EXPECT_POISONED(u[7]); 4175 } 4176 4177 #ifdef __AVX2__ 4178 V4x32 shift_avx2_left(V4x32 x, V4x32 y) { 4179 return _mm_sllv_epi32(x, y); 4180 } 4181 // This is variable vector shift that's only available starting with AVX2. 4182 // V4x32 shift_avx2_left(V4x32 x, V4x32 y) { 4183 TEST(VectorShiftTest, avx2_left) { 4184 V4x32 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3}; 4185 V4x32 s = {2, Poisoned<U4>(), 3, Poisoned<U4>()}; 4186 V4x32 u = shift_avx2_left(v, s); 4187 EXPECT_POISONED(u[0]); 4188 EXPECT_NOT_POISONED(u[0] | (~7U)); 4189 EXPECT_POISONED(u[1]); 4190 EXPECT_POISONED(u[1] | (~31U)); 4191 EXPECT_NOT_POISONED(u[2]); 4192 EXPECT_POISONED(u[3]); 4193 EXPECT_POISONED(u[3] | (~31U)); 4194 } 4195 #endif // __AVX2__ 4196 } // namespace 4197 4198 TEST(VectorPackTest, sse2_packssdw_128) { 4199 const unsigned S2_max = (1 << 15) - 1; 4200 V4x32 a = {Poisoned<U4>(0, 0xFF0000), Poisoned<U4>(0, 0xFFFF0000), 4201 S2_max + 100, 4}; 4202 V4x32 b = {Poisoned<U4>(0, 0xFF), S2_max + 10000, Poisoned<U4>(0, 0xFF00), 4203 S2_max}; 4204 4205 V8x16 c = _mm_packs_epi32(a, b); 4206 4207 EXPECT_POISONED(c[0]); 4208 EXPECT_POISONED(c[1]); 4209 EXPECT_NOT_POISONED(c[2]); 4210 EXPECT_NOT_POISONED(c[3]); 4211 EXPECT_POISONED(c[4]); 4212 EXPECT_NOT_POISONED(c[5]); 4213 EXPECT_POISONED(c[6]); 4214 EXPECT_NOT_POISONED(c[7]); 4215 4216 EXPECT_EQ(c[2], S2_max); 4217 EXPECT_EQ(c[3], 4); 4218 EXPECT_EQ(c[5], S2_max); 4219 EXPECT_EQ(c[7], S2_max); 4220 } 4221 4222 TEST(VectorPackTest, mmx_packuswb) { 4223 const unsigned U1_max = (1 << 8) - 1; 4224 V4x16 a = {Poisoned<U2>(0, 0xFF00), Poisoned<U2>(0, 0xF000U), U1_max + 100, 4225 4}; 4226 V4x16 b = {Poisoned<U2>(0, 0xFF), U1_max - 1, Poisoned<U2>(0, 0xF), U1_max}; 4227 V8x8 c = _mm_packs_pu16(a, b); 4228 4229 EXPECT_POISONED(c[0]); 4230 EXPECT_POISONED(c[1]); 4231 EXPECT_NOT_POISONED(c[2]); 4232 EXPECT_NOT_POISONED(c[3]); 4233 EXPECT_POISONED(c[4]); 4234 EXPECT_NOT_POISONED(c[5]); 4235 EXPECT_POISONED(c[6]); 4236 EXPECT_NOT_POISONED(c[7]); 4237 4238 EXPECT_EQ(c[2], U1_max); 4239 EXPECT_EQ(c[3], 4); 4240 EXPECT_EQ(c[5], U1_max - 1); 4241 EXPECT_EQ(c[7], U1_max); 4242 } 4243 4244 TEST(VectorSadTest, sse2_psad_bw) { 4245 V16x8 a = {Poisoned<U1>(), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; 4246 V16x8 b = {100, 101, 102, 103, 104, 105, 106, 107, 4247 108, 109, 110, 111, 112, 113, 114, 115}; 4248 V2x64 c = _mm_sad_epu8(a, b); 4249 4250 EXPECT_POISONED(c[0]); 4251 EXPECT_NOT_POISONED(c[1]); 4252 4253 EXPECT_EQ(800U, c[1]); 4254 } 4255 4256 TEST(VectorMaddTest, mmx_pmadd_wd) { 4257 V4x16 a = {Poisoned<U2>(), 1, 2, 3}; 4258 V4x16 b = {100, 101, 102, 103}; 4259 V2x32 c = _mm_madd_pi16(a, b); 4260 4261 EXPECT_POISONED(c[0]); 4262 EXPECT_NOT_POISONED(c[1]); 4263 4264 EXPECT_EQ((unsigned)(2 * 102 + 3 * 103), c[1]); 4265 } 4266 4267 TEST(VectorCmpTest, mm_cmpneq_ps) { 4268 V4x32 c; 4269 c = _mm_cmpneq_ps(V4x32{Poisoned<U4>(), 1, 2, 3}, V4x32{4, 5, Poisoned<U4>(), 6}); 4270 EXPECT_POISONED(c[0]); 4271 EXPECT_NOT_POISONED(c[1]); 4272 EXPECT_POISONED(c[2]); 4273 EXPECT_NOT_POISONED(c[3]); 4274 4275 c = _mm_cmpneq_ps(V4x32{0, 1, 2, 3}, V4x32{4, 5, 6, 7}); 4276 EXPECT_NOT_POISONED(c); 4277 } 4278 4279 TEST(VectorCmpTest, mm_cmpneq_sd) { 4280 V2x64 c; 4281 c = _mm_cmpneq_sd(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3}); 4282 EXPECT_POISONED(c[0]); 4283 c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3}); 4284 EXPECT_POISONED(c[0]); 4285 c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{3, 4}); 4286 EXPECT_NOT_POISONED(c[0]); 4287 c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()}); 4288 EXPECT_NOT_POISONED(c[0]); 4289 c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()}); 4290 EXPECT_NOT_POISONED(c[0]); 4291 } 4292 4293 TEST(VectorCmpTest, builtin_ia32_ucomisdlt) { 4294 U4 c; 4295 c = __builtin_ia32_ucomisdlt(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3}); 4296 EXPECT_POISONED(c); 4297 c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3}); 4298 EXPECT_POISONED(c); 4299 c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{3, 4}); 4300 EXPECT_NOT_POISONED(c); 4301 c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()}); 4302 EXPECT_NOT_POISONED(c); 4303 c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()}); 4304 EXPECT_NOT_POISONED(c); 4305 } 4306 4307 #endif // defined(__x86_64__) && defined(__clang__) 4308 4309 TEST(MemorySanitizerOrigins, SetGet) { 4310 EXPECT_EQ(TrackingOrigins(), !!__msan_get_track_origins()); 4311 if (!TrackingOrigins()) return; 4312 int x; 4313 __msan_set_origin(&x, sizeof(x), 1234); 4314 EXPECT_ORIGIN(1234U, __msan_get_origin(&x)); 4315 __msan_set_origin(&x, sizeof(x), 5678); 4316 EXPECT_ORIGIN(5678U, __msan_get_origin(&x)); 4317 __msan_set_origin(&x, sizeof(x), 0); 4318 EXPECT_ORIGIN(0U, __msan_get_origin(&x)); 4319 } 4320 4321 namespace { 4322 struct S { 4323 U4 dummy; 4324 U2 a; 4325 U2 b; 4326 }; 4327 4328 TEST(MemorySanitizerOrigins, InitializedStoreDoesNotChangeOrigin) { 4329 if (!TrackingOrigins()) return; 4330 4331 S s; 4332 U4 origin = rand(); 4333 s.a = *GetPoisonedO<U2>(0, origin); 4334 EXPECT_ORIGIN(origin, __msan_get_origin(&s.a)); 4335 EXPECT_ORIGIN(origin, __msan_get_origin(&s.b)); 4336 4337 s.b = 42; 4338 EXPECT_ORIGIN(origin, __msan_get_origin(&s.a)); 4339 EXPECT_ORIGIN(origin, __msan_get_origin(&s.b)); 4340 } 4341 } // namespace 4342 4343 template<class T, class BinaryOp> 4344 ALWAYS_INLINE 4345 void BinaryOpOriginTest(BinaryOp op) { 4346 U4 ox = rand(); 4347 U4 oy = rand(); 4348 T *x = GetPoisonedO<T>(0, ox, 0); 4349 T *y = GetPoisonedO<T>(1, oy, 0); 4350 T *z = GetPoisonedO<T>(2, 0, 0); 4351 4352 *z = op(*x, *y); 4353 U4 origin = __msan_get_origin(z); 4354 EXPECT_POISONED_O(*z, origin); 4355 EXPECT_EQ(true, __msan_origin_is_descendant_or_same(origin, ox) || 4356 __msan_origin_is_descendant_or_same(origin, oy)); 4357 4358 // y is poisoned, x is not. 4359 *x = 10101; 4360 *y = *GetPoisonedO<T>(1, oy); 4361 break_optimization(x); 4362 __msan_set_origin(z, sizeof(*z), 0); 4363 *z = op(*x, *y); 4364 EXPECT_POISONED_O(*z, oy); 4365 EXPECT_ORIGIN(oy, __msan_get_origin(z)); 4366 4367 // x is poisoned, y is not. 4368 *x = *GetPoisonedO<T>(0, ox); 4369 *y = 10101010; 4370 break_optimization(y); 4371 __msan_set_origin(z, sizeof(*z), 0); 4372 *z = op(*x, *y); 4373 EXPECT_POISONED_O(*z, ox); 4374 EXPECT_ORIGIN(ox, __msan_get_origin(z)); 4375 } 4376 4377 template<class T> ALWAYS_INLINE T XOR(const T &a, const T&b) { return a ^ b; } 4378 template<class T> ALWAYS_INLINE T ADD(const T &a, const T&b) { return a + b; } 4379 template<class T> ALWAYS_INLINE T SUB(const T &a, const T&b) { return a - b; } 4380 template<class T> ALWAYS_INLINE T MUL(const T &a, const T&b) { return a * b; } 4381 template<class T> ALWAYS_INLINE T AND(const T &a, const T&b) { return a & b; } 4382 template<class T> ALWAYS_INLINE T OR (const T &a, const T&b) { return a | b; } 4383 4384 TEST(MemorySanitizerOrigins, BinaryOp) { 4385 if (!TrackingOrigins()) return; 4386 BinaryOpOriginTest<S8>(XOR<S8>); 4387 BinaryOpOriginTest<U8>(ADD<U8>); 4388 BinaryOpOriginTest<S4>(SUB<S4>); 4389 BinaryOpOriginTest<S4>(MUL<S4>); 4390 BinaryOpOriginTest<U4>(OR<U4>); 4391 BinaryOpOriginTest<U4>(AND<U4>); 4392 BinaryOpOriginTest<double>(ADD<U4>); 4393 BinaryOpOriginTest<float>(ADD<S4>); 4394 BinaryOpOriginTest<double>(ADD<double>); 4395 BinaryOpOriginTest<float>(ADD<double>); 4396 } 4397 4398 TEST(MemorySanitizerOrigins, Unary) { 4399 if (!TrackingOrigins()) return; 4400 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4401 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4402 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4403 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4404 4405 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4406 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4407 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4408 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4409 4410 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4411 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4412 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4413 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4414 4415 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4416 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4417 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4418 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4419 4420 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4421 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 4422 } 4423 4424 TEST(MemorySanitizerOrigins, EQ) { 4425 if (!TrackingOrigins()) return; 4426 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 4427 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 4428 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 4429 } 4430 4431 TEST(MemorySanitizerOrigins, DIV) { 4432 if (!TrackingOrigins()) return; 4433 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 4434 unsigned o = __LINE__; 4435 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 4436 } 4437 4438 TEST(MemorySanitizerOrigins, SHIFT) { 4439 if (!TrackingOrigins()) return; 4440 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 4441 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 4442 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 4443 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 4444 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 4445 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 4446 } 4447 4448 template<class T, int N> 4449 void MemCpyTest() { 4450 int ox = __LINE__; 4451 T *x = new T[N]; 4452 T *y = new T[N]; 4453 T *z = new T[N]; 4454 T *q = new T[N]; 4455 __msan_poison(x, N * sizeof(T)); 4456 __msan_set_origin(x, N * sizeof(T), ox); 4457 __msan_set_origin(y, N * sizeof(T), 777777); 4458 __msan_set_origin(z, N * sizeof(T), 888888); 4459 EXPECT_NOT_POISONED(x); 4460 memcpy(y, x, N * sizeof(T)); 4461 EXPECT_POISONED_O(y[0], ox); 4462 EXPECT_POISONED_O(y[N/2], ox); 4463 EXPECT_POISONED_O(y[N-1], ox); 4464 EXPECT_NOT_POISONED(x); 4465 #if !defined(__NetBSD__) 4466 void *res = mempcpy(q, x, N * sizeof(T)); 4467 ASSERT_EQ(q + N, res); 4468 EXPECT_POISONED_O(q[0], ox); 4469 EXPECT_POISONED_O(q[N/2], ox); 4470 EXPECT_POISONED_O(q[N-1], ox); 4471 EXPECT_NOT_POISONED(x); 4472 #endif 4473 memmove(z, x, N * sizeof(T)); 4474 EXPECT_POISONED_O(z[0], ox); 4475 EXPECT_POISONED_O(z[N/2], ox); 4476 EXPECT_POISONED_O(z[N-1], ox); 4477 } 4478 4479 TEST(MemorySanitizerOrigins, LargeMemCpy) { 4480 if (!TrackingOrigins()) return; 4481 MemCpyTest<U1, 10000>(); 4482 MemCpyTest<U8, 10000>(); 4483 } 4484 4485 TEST(MemorySanitizerOrigins, SmallMemCpy) { 4486 if (!TrackingOrigins()) return; 4487 MemCpyTest<U8, 1>(); 4488 MemCpyTest<U8, 2>(); 4489 MemCpyTest<U8, 3>(); 4490 } 4491 4492 TEST(MemorySanitizerOrigins, Select) { 4493 if (!TrackingOrigins()) return; 4494 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 4495 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4496 S4 x; 4497 break_optimization(&x); 4498 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 4499 4500 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 4501 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 4502 } 4503 4504 NOINLINE int RetvalOriginTest(U4 origin) { 4505 int *a = new int; 4506 break_optimization(a); 4507 __msan_set_origin(a, sizeof(*a), origin); 4508 int res = *a; 4509 delete a; 4510 return res; 4511 } 4512 4513 TEST(MemorySanitizerOrigins, Retval) { 4514 if (!TrackingOrigins()) return; 4515 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 4516 } 4517 4518 NOINLINE void ParamOriginTest(int param, U4 origin) { 4519 EXPECT_POISONED_O(param, origin); 4520 } 4521 4522 TEST(MemorySanitizerOrigins, Param) { 4523 if (!TrackingOrigins()) return; 4524 int *a = new int; 4525 U4 origin = __LINE__; 4526 break_optimization(a); 4527 __msan_set_origin(a, sizeof(*a), origin); 4528 ParamOriginTest(*a, origin); 4529 delete a; 4530 } 4531 4532 TEST(MemorySanitizerOrigins, Invoke) { 4533 if (!TrackingOrigins()) return; 4534 StructWithDtor s; // Will cause the calls to become invokes. 4535 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 4536 } 4537 4538 TEST(MemorySanitizerOrigins, strlen) { 4539 S8 alignment; 4540 break_optimization(&alignment); 4541 char x[4] = {'a', 'b', 0, 0}; 4542 __msan_poison(&x[2], 1); 4543 U4 origin = __LINE__; 4544 __msan_set_origin(x, sizeof(x), origin); 4545 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 4546 } 4547 4548 TEST(MemorySanitizerOrigins, wcslen) { 4549 wchar_t w[3] = {'a', 'b', 0}; 4550 U4 origin = __LINE__; 4551 __msan_set_origin(w, sizeof(w), origin); 4552 __msan_poison(&w[2], sizeof(wchar_t)); 4553 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 4554 } 4555 4556 #if MSAN_HAS_M128 4557 TEST(MemorySanitizerOrigins, StoreIntrinsic) { 4558 __m128 x, y; 4559 U4 origin = __LINE__; 4560 __msan_set_origin(&x, sizeof(x), origin); 4561 __msan_poison(&x, sizeof(x)); 4562 _mm_storeu_ps((float*)&y, x); 4563 EXPECT_POISONED_O(y, origin); 4564 } 4565 #endif 4566 4567 NOINLINE void RecursiveMalloc(int depth) { 4568 static int count; 4569 count++; 4570 if ((count % (1024 * 1024)) == 0) 4571 printf("RecursiveMalloc: %d\n", count); 4572 int *x1 = new int; 4573 int *x2 = new int; 4574 break_optimization(x1); 4575 break_optimization(x2); 4576 if (depth > 0) { 4577 RecursiveMalloc(depth-1); 4578 RecursiveMalloc(depth-1); 4579 } 4580 delete x1; 4581 delete x2; 4582 } 4583 4584 TEST(MemorySanitizer, Select) { 4585 int x; 4586 int volatile* p = &x; 4587 int z = *p ? 1 : 0; 4588 EXPECT_POISONED(z); 4589 } 4590 4591 TEST(MemorySanitizer, SelectPartial) { 4592 // Precise instrumentation of select. 4593 // Some bits of the result do not depend on select condition, and must stay 4594 // initialized even if select condition is not. These are the bits that are 4595 // equal and initialized in both left and right select arguments. 4596 U4 x = 0xFFFFABCDU; 4597 U4 x_s = 0xFFFF0000U; 4598 __msan_partial_poison(&x, &x_s, sizeof(x)); 4599 U4 y = 0xAB00U; 4600 U1 cond = true; 4601 __msan_poison(&cond, sizeof(cond)); 4602 U4 z = cond ? x : y; 4603 __msan_print_shadow(&z, sizeof(z)); 4604 EXPECT_POISONED(z & 0xFFU); 4605 EXPECT_NOT_POISONED(z & 0xFF00U); 4606 EXPECT_POISONED(z & 0xFF0000U); 4607 EXPECT_POISONED(z & 0xFF000000U); 4608 EXPECT_EQ(0xAB00U, z & 0xFF00U); 4609 } 4610 4611 TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 4612 RecursiveMalloc(22); 4613 } 4614 4615 TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 4616 size_t sizes[] = {0, 20, 5000, 1<<20}; 4617 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 4618 size_t alloc_size = __sanitizer_get_estimated_allocated_size(sizes[i]); 4619 EXPECT_EQ(alloc_size, sizes[i]); 4620 } 4621 } 4622 4623 TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 4624 char *array = reinterpret_cast<char*>(malloc(100)); 4625 int *int_ptr = new int; 4626 4627 EXPECT_TRUE(__sanitizer_get_ownership(array)); 4628 EXPECT_EQ(100U, __sanitizer_get_allocated_size(array)); 4629 4630 EXPECT_TRUE(__sanitizer_get_ownership(int_ptr)); 4631 EXPECT_EQ(sizeof(*int_ptr), __sanitizer_get_allocated_size(int_ptr)); 4632 4633 void *wild_addr = reinterpret_cast<void*>(0x1); 4634 EXPECT_FALSE(__sanitizer_get_ownership(wild_addr)); 4635 EXPECT_EQ(0U, __sanitizer_get_allocated_size(wild_addr)); 4636 4637 EXPECT_FALSE(__sanitizer_get_ownership(array + 50)); 4638 EXPECT_EQ(0U, __sanitizer_get_allocated_size(array + 50)); 4639 4640 // NULL is a valid argument for GetAllocatedSize but is not owned. 4641 EXPECT_FALSE(__sanitizer_get_ownership(NULL)); 4642 EXPECT_EQ(0U, __sanitizer_get_allocated_size(NULL)); 4643 4644 free(array); 4645 EXPECT_FALSE(__sanitizer_get_ownership(array)); 4646 EXPECT_EQ(0U, __sanitizer_get_allocated_size(array)); 4647 4648 delete int_ptr; 4649 } 4650 4651 TEST(MemorySanitizer, MlockTest) { 4652 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 4653 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 4654 EXPECT_EQ(0, munlockall()); 4655 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 4656 } 4657 4658 // Test that LargeAllocator unpoisons memory before releasing it to the OS. 4659 TEST(MemorySanitizer, LargeAllocatorUnpoisonsOnFree) { 4660 void *p = malloc(1024 * 1024); 4661 free(p); 4662 4663 typedef void *(*mmap_fn)(void *, size_t, int, int, int, off_t); 4664 mmap_fn real_mmap = (mmap_fn)dlsym(RTLD_NEXT, "mmap"); 4665 4666 // Allocate the page that was released to the OS in free() with the real mmap, 4667 // bypassing the interceptor. 4668 char *q = (char *)real_mmap(p, 4096, PROT_READ | PROT_WRITE, 4669 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); 4670 ASSERT_NE((char *)0, q); 4671 4672 ASSERT_TRUE(q <= p); 4673 ASSERT_TRUE(q + 4096 > p); 4674 4675 EXPECT_NOT_POISONED(q[0]); 4676 EXPECT_NOT_POISONED(q[10]); 4677 EXPECT_NOT_POISONED(q[100]); 4678 4679 munmap(q, 4096); 4680 } 4681 4682 #if SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 4683 TEST(MemorySanitizer, MallocUsableSizeTest) { 4684 const size_t kArraySize = 100; 4685 char *array = Ident((char*)malloc(kArraySize)); 4686 int *int_ptr = Ident(new int); 4687 EXPECT_EQ(0U, malloc_usable_size(NULL)); 4688 EXPECT_EQ(kArraySize, malloc_usable_size(array)); 4689 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); 4690 free(array); 4691 delete int_ptr; 4692 } 4693 #endif // SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 4694 4695 #ifdef __x86_64__ 4696 static bool HaveBmi() { 4697 U4 a = 0, b = 0, c = 0, d = 0; 4698 asm("cpuid\n\t" : "=a"(a), "=D"(b), "=c"(c), "=d"(d) : "a"(7)); 4699 const U4 kBmi12Mask = (1U<<3) | (1U<<8); 4700 return (b & kBmi12Mask) == kBmi12Mask; 4701 } 4702 4703 __attribute__((target("bmi,bmi2"))) 4704 static void TestBZHI() { 4705 EXPECT_NOT_POISONED( 4706 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF000000), 24)); 4707 EXPECT_POISONED( 4708 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF800000), 24)); 4709 // Second operand saturates. 4710 EXPECT_POISONED( 4711 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0x80000000), 240)); 4712 // Any poison in the second operand poisons output. 4713 EXPECT_POISONED( 4714 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 1))); 4715 EXPECT_POISONED( 4716 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0x80000000))); 4717 EXPECT_POISONED( 4718 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0xFFFFFFFF))); 4719 4720 EXPECT_NOT_POISONED( 4721 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF00000000000000ULL), 56)); 4722 EXPECT_POISONED( 4723 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF80000000000000ULL), 56)); 4724 // Second operand saturates. 4725 EXPECT_POISONED( 4726 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0x8000000000000000ULL), 240)); 4727 // Any poison in the second operand poisons output. 4728 EXPECT_POISONED( 4729 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 1))); 4730 EXPECT_POISONED( 4731 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0x8000000000000000ULL))); 4732 EXPECT_POISONED( 4733 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0xFFFFFFFF00000000ULL))); 4734 } 4735 4736 ALWAYS_INLINE U4 bextr_imm(U4 start, U4 len) { 4737 start &= 0xFF; 4738 len &= 0xFF; 4739 return (len << 8) | start; 4740 } 4741 4742 __attribute__((target("bmi,bmi2"))) 4743 static void TestBEXTR() { 4744 EXPECT_POISONED( 4745 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(0, 8))); 4746 EXPECT_POISONED( 4747 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 8))); 4748 EXPECT_NOT_POISONED( 4749 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 8))); 4750 EXPECT_NOT_POISONED( 4751 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 800))); 4752 EXPECT_POISONED( 4753 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 800))); 4754 EXPECT_NOT_POISONED( 4755 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(5, 0))); 4756 4757 EXPECT_POISONED( 4758 __builtin_ia32_bextr_u32(0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 1))); 4759 EXPECT_POISONED(__builtin_ia32_bextr_u32( 4760 0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 0x80000000))); 4761 4762 EXPECT_POISONED( 4763 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(0, 8))); 4764 EXPECT_POISONED( 4765 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 8))); 4766 EXPECT_NOT_POISONED( 4767 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 8))); 4768 EXPECT_NOT_POISONED( 4769 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 800))); 4770 EXPECT_POISONED( 4771 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 800))); 4772 EXPECT_NOT_POISONED( 4773 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(5, 0))); 4774 4775 // Poison in the top half. 4776 EXPECT_NOT_POISONED(__builtin_ia32_bextr_u64( 4777 Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 8))); 4778 EXPECT_POISONED(__builtin_ia32_bextr_u64( 4779 Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 9))); 4780 4781 EXPECT_POISONED( 4782 __builtin_ia32_bextr_u64(0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 1))); 4783 EXPECT_POISONED(__builtin_ia32_bextr_u64( 4784 0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 0x80000000))); 4785 } 4786 4787 __attribute__((target("bmi,bmi2"))) 4788 static void TestPDEP() { 4789 U4 x = Poisoned<U4>(0, 0xFF00); 4790 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF)); 4791 EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF)); 4792 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF00)); 4793 EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00)); 4794 4795 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00) & 0xFF); 4796 EXPECT_POISONED(__builtin_ia32_pdep_si(0, Poisoned<U4>(0xF, 1))); 4797 4798 U8 y = Poisoned<U8>(0, 0xFF00); 4799 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF)); 4800 EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF)); 4801 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF0000000000)); 4802 EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF000000000000)); 4803 4804 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF00) & 0xFF); 4805 EXPECT_POISONED(__builtin_ia32_pdep_di(0, Poisoned<U4>(0xF, 1))); 4806 } 4807 4808 __attribute__((target("bmi,bmi2"))) 4809 static void TestPEXT() { 4810 U4 x = Poisoned<U4>(0, 0xFF00); 4811 EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0xFF)); 4812 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1FF)); 4813 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x100)); 4814 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1000)); 4815 EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0x10000)); 4816 4817 EXPECT_POISONED(__builtin_ia32_pext_si(0xFF00, Poisoned<U4>(0xFF, 1))); 4818 4819 U8 y = Poisoned<U8>(0, 0xFF0000000000); 4820 EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0xFF00000000)); 4821 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x1FF00000000)); 4822 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x10000000000)); 4823 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x100000000000)); 4824 EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0x1000000000000)); 4825 4826 EXPECT_POISONED(__builtin_ia32_pext_di(0xFF00, Poisoned<U8>(0xFF, 1))); 4827 } 4828 4829 TEST(MemorySanitizer, Bmi) { 4830 if (HaveBmi()) { 4831 TestBZHI(); 4832 TestBEXTR(); 4833 TestPDEP(); 4834 TestPEXT(); 4835 } 4836 } 4837 #endif // defined(__x86_64__) 4838 4839 namespace { 4840 volatile long z; 4841 4842 __attribute__((noinline,optnone)) void f(long a, long b, long c, long d, long e, long f) { 4843 z = a + b + c + d + e + f; 4844 } 4845 4846 __attribute__((noinline,optnone)) void throw_stuff() { 4847 throw 5; 4848 } 4849 4850 TEST(MemorySanitizer, throw_catch) { 4851 long x; 4852 // Poison __msan_param_tls. 4853 __msan_poison(&x, sizeof(x)); 4854 f(x, x, x, x, x, x); 4855 try { 4856 // This calls __gxx_personality_v0 through some libgcc_s function. 4857 // __gxx_personality_v0 is instrumented, libgcc_s is not; as a result, 4858 // __msan_param_tls is not updated and __gxx_personality_v0 can find 4859 // leftover poison from the previous call. 4860 // A suppression in msan_ignorelist.txt makes it work. 4861 throw_stuff(); 4862 } catch (const int &e) { 4863 // pass 4864 } 4865 } 4866 } // namespace 4867