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(*GetPoisoned<bool>() & *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 delete[] x; 1564 delete[] y; 1565 } 1566 1567 TEST(MemorySanitizer, memccpy_match_positive) { 1568 char* x = new char[5]; 1569 char* y = new char[5]; 1570 x[0] = 'a'; 1571 x[2] = 'b'; 1572 EXPECT_UMR(memccpy(y, x, 'b', 5)); 1573 delete[] x; 1574 delete[] y; 1575 } 1576 1577 TEST(MemorySanitizer, bcopy) { 1578 char* x = new char[2]; 1579 char* y = new char[2]; 1580 x[0] = 1; 1581 x[1] = *GetPoisoned<char>(); 1582 bcopy(x, y, 2); 1583 EXPECT_NOT_POISONED(y[0]); 1584 EXPECT_POISONED(y[1]); 1585 } 1586 1587 TEST(MemorySanitizer, strdup) { 1588 char buf[4] = "abc"; 1589 __msan_poison(buf + 2, sizeof(*buf)); 1590 char *x = strdup(buf); 1591 EXPECT_NOT_POISONED(x[0]); 1592 EXPECT_NOT_POISONED(x[1]); 1593 EXPECT_POISONED(x[2]); 1594 EXPECT_NOT_POISONED(x[3]); 1595 free(x); 1596 } 1597 1598 TEST(MemorySanitizer, strndup) { 1599 char buf[4] = "abc"; 1600 __msan_poison(buf + 2, sizeof(*buf)); 1601 char *x; 1602 EXPECT_UMR(x = strndup(buf, 3)); 1603 EXPECT_NOT_POISONED(x[0]); 1604 EXPECT_NOT_POISONED(x[1]); 1605 EXPECT_POISONED(x[2]); 1606 EXPECT_NOT_POISONED(x[3]); 1607 free(x); 1608 // Check handling of non 0 terminated strings. 1609 buf[3] = 'z'; 1610 __msan_poison(buf + 3, sizeof(*buf)); 1611 EXPECT_UMR(x = strndup(buf + 3, 1)); 1612 EXPECT_POISONED(x[0]); 1613 EXPECT_NOT_POISONED(x[1]); 1614 free(x); 1615 } 1616 1617 TEST(MemorySanitizer, strndup_short) { 1618 char buf[4] = "abc"; 1619 __msan_poison(buf + 1, sizeof(*buf)); 1620 __msan_poison(buf + 2, sizeof(*buf)); 1621 char *x; 1622 EXPECT_UMR(x = strndup(buf, 2)); 1623 EXPECT_NOT_POISONED(x[0]); 1624 EXPECT_POISONED(x[1]); 1625 EXPECT_NOT_POISONED(x[2]); 1626 free(x); 1627 } 1628 1629 1630 template<class T, int size> 1631 void TestOverlapMemmove() { 1632 T *x = new T[size]; 1633 ASSERT_GE(size, 3); 1634 x[2] = 0; 1635 memmove(x, x + 1, (size - 1) * sizeof(T)); 1636 EXPECT_NOT_POISONED(x[1]); 1637 EXPECT_POISONED(x[0]); 1638 EXPECT_POISONED(x[2]); 1639 delete [] x; 1640 } 1641 1642 TEST(MemorySanitizer, overlap_memmove) { 1643 TestOverlapMemmove<U1, 10>(); 1644 TestOverlapMemmove<U1, 1000>(); 1645 TestOverlapMemmove<U8, 4>(); 1646 TestOverlapMemmove<U8, 1000>(); 1647 } 1648 1649 TEST(MemorySanitizer, strcpy) { 1650 char* x = new char[3]; 1651 char* y = new char[3]; 1652 x[0] = 'a'; 1653 x[1] = *GetPoisoned<char>(1, 1); 1654 x[2] = 0; 1655 strcpy(y, x); 1656 EXPECT_NOT_POISONED(y[0]); 1657 EXPECT_POISONED(y[1]); 1658 EXPECT_NOT_POISONED(y[2]); 1659 } 1660 1661 TEST(MemorySanitizer, strncpy) { 1662 char* x = new char[3]; 1663 char* y = new char[5]; 1664 x[0] = 'a'; 1665 x[1] = *GetPoisoned<char>(1, 1); 1666 x[2] = '\0'; 1667 strncpy(y, x, 4); 1668 EXPECT_NOT_POISONED(y[0]); 1669 EXPECT_POISONED(y[1]); 1670 EXPECT_NOT_POISONED(y[2]); 1671 EXPECT_NOT_POISONED(y[3]); 1672 EXPECT_POISONED(y[4]); 1673 } 1674 1675 TEST(MemorySanitizer, stpcpy) { 1676 char* x = new char[3]; 1677 char* y = new char[3]; 1678 x[0] = 'a'; 1679 x[1] = *GetPoisoned<char>(1, 1); 1680 x[2] = 0; 1681 char *res = stpcpy(y, x); 1682 ASSERT_EQ(res, y + 2); 1683 EXPECT_NOT_POISONED(y[0]); 1684 EXPECT_POISONED(y[1]); 1685 EXPECT_NOT_POISONED(y[2]); 1686 } 1687 1688 TEST(MemorySanitizer, strcat) { 1689 char a[10]; 1690 char b[] = "def"; 1691 strcpy(a, "abc"); 1692 __msan_poison(b + 1, 1); 1693 strcat(a, b); 1694 EXPECT_NOT_POISONED(a[3]); 1695 EXPECT_POISONED(a[4]); 1696 EXPECT_NOT_POISONED(a[5]); 1697 EXPECT_NOT_POISONED(a[6]); 1698 EXPECT_POISONED(a[7]); 1699 } 1700 1701 TEST(MemorySanitizer, strncat) { 1702 char a[10]; 1703 char b[] = "def"; 1704 strcpy(a, "abc"); 1705 __msan_poison(b + 1, 1); 1706 strncat(a, b, 5); 1707 EXPECT_NOT_POISONED(a[3]); 1708 EXPECT_POISONED(a[4]); 1709 EXPECT_NOT_POISONED(a[5]); 1710 EXPECT_NOT_POISONED(a[6]); 1711 EXPECT_POISONED(a[7]); 1712 } 1713 1714 TEST(MemorySanitizer, strncat_overflow) { 1715 char a[10]; 1716 char b[] = "def"; 1717 strcpy(a, "abc"); 1718 __msan_poison(b + 1, 1); 1719 strncat(a, b, 2); 1720 EXPECT_NOT_POISONED(a[3]); 1721 EXPECT_POISONED(a[4]); 1722 EXPECT_NOT_POISONED(a[5]); 1723 EXPECT_POISONED(a[6]); 1724 EXPECT_POISONED(a[7]); 1725 } 1726 1727 TEST(MemorySanitizer, wcscat) { 1728 wchar_t a[10]; 1729 wchar_t b[] = L"def"; 1730 wcscpy(a, L"abc"); 1731 1732 wcscat(a, b); 1733 EXPECT_EQ(6U, wcslen(a)); 1734 EXPECT_POISONED(a[7]); 1735 1736 a[3] = 0; 1737 __msan_poison(b + 1, sizeof(wchar_t)); 1738 EXPECT_UMR(wcscat(a, b)); 1739 1740 __msan_unpoison(b + 1, sizeof(wchar_t)); 1741 __msan_poison(a + 2, sizeof(wchar_t)); 1742 EXPECT_UMR(wcscat(a, b)); 1743 } 1744 1745 TEST(MemorySanitizer, wcsncat) { 1746 wchar_t a[10]; 1747 wchar_t b[] = L"def"; 1748 wcscpy(a, L"abc"); 1749 1750 wcsncat(a, b, 5); 1751 EXPECT_EQ(6U, wcslen(a)); 1752 EXPECT_POISONED(a[7]); 1753 1754 a[3] = 0; 1755 __msan_poison(a + 4, sizeof(wchar_t) * 6); 1756 wcsncat(a, b, 2); 1757 EXPECT_EQ(5U, wcslen(a)); 1758 EXPECT_POISONED(a[6]); 1759 1760 a[3] = 0; 1761 __msan_poison(b + 1, sizeof(wchar_t)); 1762 EXPECT_UMR(wcsncat(a, b, 2)); 1763 1764 __msan_unpoison(b + 1, sizeof(wchar_t)); 1765 __msan_poison(a + 2, sizeof(wchar_t)); 1766 EXPECT_UMR(wcsncat(a, b, 2)); 1767 } 1768 1769 #define TEST_STRTO_INT(func_name, char_type, str_prefix) \ 1770 TEST(MemorySanitizer, func_name) { \ 1771 char_type *e; \ 1772 EXPECT_EQ(1U, func_name(str_prefix##"1", &e, 10)); \ 1773 EXPECT_NOT_POISONED((S8)e); \ 1774 } 1775 1776 #define TEST_STRTO_FLOAT(func_name, char_type, str_prefix) \ 1777 TEST(MemorySanitizer, func_name) { \ 1778 char_type *e; \ 1779 EXPECT_NE(0, func_name(str_prefix##"1.5", &e)); \ 1780 EXPECT_NOT_POISONED((S8)e); \ 1781 } 1782 1783 #define TEST_STRTO_FLOAT_LOC(func_name, char_type, str_prefix) \ 1784 TEST(MemorySanitizer, func_name) { \ 1785 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \ 1786 char_type *e; \ 1787 EXPECT_NE(0, func_name(str_prefix##"1.5", &e, loc)); \ 1788 EXPECT_NOT_POISONED((S8)e); \ 1789 freelocale(loc); \ 1790 } 1791 1792 #define TEST_STRTO_INT_LOC(func_name, char_type, str_prefix) \ 1793 TEST(MemorySanitizer, func_name) { \ 1794 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \ 1795 char_type *e; \ 1796 ASSERT_EQ(1U, func_name(str_prefix##"1", &e, 10, loc)); \ 1797 EXPECT_NOT_POISONED((S8)e); \ 1798 freelocale(loc); \ 1799 } 1800 1801 TEST_STRTO_INT(strtol, char, ) 1802 TEST_STRTO_INT(strtoll, char, ) 1803 TEST_STRTO_INT(strtoul, char, ) 1804 TEST_STRTO_INT(strtoull, char, ) 1805 #ifndef MUSL 1806 TEST_STRTO_INT(strtouq, char, ) 1807 #endif 1808 1809 TEST_STRTO_FLOAT(strtof, char, ) 1810 TEST_STRTO_FLOAT(strtod, char, ) 1811 TEST_STRTO_FLOAT(strtold, char, ) 1812 1813 #ifndef MUSL 1814 TEST_STRTO_FLOAT_LOC(strtof_l, char, ) 1815 TEST_STRTO_FLOAT_LOC(strtod_l, char, ) 1816 TEST_STRTO_FLOAT_LOC(strtold_l, char, ) 1817 1818 TEST_STRTO_INT_LOC(strtol_l, char, ) 1819 TEST_STRTO_INT_LOC(strtoll_l, char, ) 1820 TEST_STRTO_INT_LOC(strtoul_l, char, ) 1821 TEST_STRTO_INT_LOC(strtoull_l, char, ) 1822 #endif 1823 1824 TEST_STRTO_INT(wcstol, wchar_t, L) 1825 TEST_STRTO_INT(wcstoll, wchar_t, L) 1826 TEST_STRTO_INT(wcstoul, wchar_t, L) 1827 TEST_STRTO_INT(wcstoull, wchar_t, L) 1828 1829 TEST_STRTO_FLOAT(wcstof, wchar_t, L) 1830 TEST_STRTO_FLOAT(wcstod, wchar_t, L) 1831 TEST_STRTO_FLOAT(wcstold, wchar_t, L) 1832 1833 #ifndef MUSL 1834 TEST_STRTO_FLOAT_LOC(wcstof_l, wchar_t, L) 1835 TEST_STRTO_FLOAT_LOC(wcstod_l, wchar_t, L) 1836 TEST_STRTO_FLOAT_LOC(wcstold_l, wchar_t, L) 1837 1838 TEST_STRTO_INT_LOC(wcstol_l, wchar_t, L) 1839 TEST_STRTO_INT_LOC(wcstoll_l, wchar_t, L) 1840 TEST_STRTO_INT_LOC(wcstoul_l, wchar_t, L) 1841 TEST_STRTO_INT_LOC(wcstoull_l, wchar_t, L) 1842 #endif 1843 1844 1845 TEST(MemorySanitizer, strtoimax) { 1846 char *e; 1847 ASSERT_EQ(1, strtoimax("1", &e, 10)); 1848 EXPECT_NOT_POISONED((S8) e); 1849 } 1850 1851 TEST(MemorySanitizer, strtoumax) { 1852 char *e; 1853 ASSERT_EQ(1U, strtoumax("1", &e, 10)); 1854 EXPECT_NOT_POISONED((S8) e); 1855 } 1856 1857 #ifdef __GLIBC__ 1858 extern "C" float __strtof_l(const char *nptr, char **endptr, locale_t loc); 1859 TEST_STRTO_FLOAT_LOC(__strtof_l, char, ) 1860 extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1861 TEST_STRTO_FLOAT_LOC(__strtod_l, char, ) 1862 extern "C" long double __strtold_l(const char *nptr, char **endptr, 1863 locale_t loc); 1864 TEST_STRTO_FLOAT_LOC(__strtold_l, char, ) 1865 1866 extern "C" float __wcstof_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc); 1867 TEST_STRTO_FLOAT_LOC(__wcstof_l, wchar_t, L) 1868 extern "C" double __wcstod_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc); 1869 TEST_STRTO_FLOAT_LOC(__wcstod_l, wchar_t, L) 1870 extern "C" long double __wcstold_l(const wchar_t *nptr, wchar_t **endptr, 1871 locale_t loc); 1872 TEST_STRTO_FLOAT_LOC(__wcstold_l, wchar_t, L) 1873 #endif // __GLIBC__ 1874 1875 TEST(MemorySanitizer, modf) { 1876 double y; 1877 modf(2.1, &y); 1878 EXPECT_NOT_POISONED(y); 1879 } 1880 1881 TEST(MemorySanitizer, modff) { 1882 float y; 1883 modff(2.1, &y); 1884 EXPECT_NOT_POISONED(y); 1885 } 1886 1887 TEST(MemorySanitizer, modfl) { 1888 long double y; 1889 modfl(2.1, &y); 1890 EXPECT_NOT_POISONED(y); 1891 } 1892 1893 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1894 TEST(MemorySanitizer, sincos) { 1895 double s, c; 1896 sincos(0.2, &s, &c); 1897 EXPECT_NOT_POISONED(s); 1898 EXPECT_NOT_POISONED(c); 1899 } 1900 #endif 1901 1902 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1903 TEST(MemorySanitizer, sincosf) { 1904 float s, c; 1905 sincosf(0.2, &s, &c); 1906 EXPECT_NOT_POISONED(s); 1907 EXPECT_NOT_POISONED(c); 1908 } 1909 #endif 1910 1911 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1912 TEST(MemorySanitizer, sincosl) { 1913 long double s, c; 1914 sincosl(0.2, &s, &c); 1915 EXPECT_NOT_POISONED(s); 1916 EXPECT_NOT_POISONED(c); 1917 } 1918 #endif 1919 1920 TEST(MemorySanitizer, remquo) { 1921 int quo; 1922 double res = remquo(29.0, 3.0, &quo); 1923 ASSERT_NE(0.0, res); 1924 EXPECT_NOT_POISONED(quo); 1925 } 1926 1927 TEST(MemorySanitizer, remquof) { 1928 int quo; 1929 float res = remquof(29.0, 3.0, &quo); 1930 ASSERT_NE(0.0, res); 1931 EXPECT_NOT_POISONED(quo); 1932 } 1933 1934 #if !defined(__NetBSD__) 1935 TEST(MemorySanitizer, remquol) { 1936 int quo; 1937 long double res = remquof(29.0, 3.0, &quo); 1938 ASSERT_NE(0.0, res); 1939 EXPECT_NOT_POISONED(quo); 1940 } 1941 #endif 1942 1943 TEST(MemorySanitizer, lgamma) { 1944 double res = lgamma(1.1); 1945 ASSERT_NE(0.0, res); 1946 EXPECT_NOT_POISONED(signgam); 1947 } 1948 1949 TEST(MemorySanitizer, lgammaf) { 1950 float res = lgammaf(1.1); 1951 ASSERT_NE(0.0, res); 1952 EXPECT_NOT_POISONED(signgam); 1953 } 1954 1955 #if !defined(__NetBSD__) 1956 TEST(MemorySanitizer, lgammal) { 1957 long double res = lgammal(1.1); 1958 ASSERT_NE(0.0, res); 1959 EXPECT_NOT_POISONED(signgam); 1960 } 1961 #endif 1962 1963 TEST(MemorySanitizer, lgamma_r) { 1964 int sgn; 1965 double res = lgamma_r(1.1, &sgn); 1966 ASSERT_NE(0.0, res); 1967 EXPECT_NOT_POISONED(sgn); 1968 } 1969 1970 TEST(MemorySanitizer, lgammaf_r) { 1971 int sgn; 1972 float res = lgammaf_r(1.1, &sgn); 1973 ASSERT_NE(0.0, res); 1974 EXPECT_NOT_POISONED(sgn); 1975 } 1976 1977 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 1978 TEST(MemorySanitizer, lgammal_r) { 1979 int sgn; 1980 long double res = lgammal_r(1.1, &sgn); 1981 ASSERT_NE(0.0, res); 1982 EXPECT_NOT_POISONED(sgn); 1983 } 1984 #endif 1985 1986 #ifdef __GLIBC__ 1987 TEST(MemorySanitizer, drand48_r) { 1988 struct drand48_data buf; 1989 srand48_r(0, &buf); 1990 double d; 1991 drand48_r(&buf, &d); 1992 EXPECT_NOT_POISONED(d); 1993 } 1994 1995 TEST(MemorySanitizer, lrand48_r) { 1996 struct drand48_data buf; 1997 srand48_r(0, &buf); 1998 long d; 1999 lrand48_r(&buf, &d); 2000 EXPECT_NOT_POISONED(d); 2001 } 2002 #endif 2003 2004 TEST(MemorySanitizer, sprintf) { 2005 char buff[10]; 2006 break_optimization(buff); 2007 EXPECT_POISONED(buff[0]); 2008 int res = sprintf(buff, "%d", 1234567); 2009 ASSERT_EQ(res, 7); 2010 ASSERT_EQ(buff[0], '1'); 2011 ASSERT_EQ(buff[1], '2'); 2012 ASSERT_EQ(buff[2], '3'); 2013 ASSERT_EQ(buff[6], '7'); 2014 ASSERT_EQ(buff[7], 0); 2015 EXPECT_POISONED(buff[8]); 2016 } 2017 2018 TEST(MemorySanitizer, snprintf) { 2019 char buff[10]; 2020 break_optimization(buff); 2021 EXPECT_POISONED(buff[0]); 2022 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 2023 ASSERT_EQ(res, 7); 2024 ASSERT_EQ(buff[0], '1'); 2025 ASSERT_EQ(buff[1], '2'); 2026 ASSERT_EQ(buff[2], '3'); 2027 ASSERT_EQ(buff[6], '7'); 2028 ASSERT_EQ(buff[7], 0); 2029 EXPECT_POISONED(buff[8]); 2030 } 2031 2032 TEST(MemorySanitizer, swprintf) { 2033 wchar_t buff[10]; 2034 ASSERT_EQ(4U, sizeof(wchar_t)); 2035 break_optimization(buff); 2036 EXPECT_POISONED(buff[0]); 2037 int res = swprintf(buff, 9, L"%d", 1234567); 2038 ASSERT_EQ(res, 7); 2039 ASSERT_EQ(buff[0], '1'); 2040 ASSERT_EQ(buff[1], '2'); 2041 ASSERT_EQ(buff[2], '3'); 2042 ASSERT_EQ(buff[6], '7'); 2043 ASSERT_EQ(buff[7], L'\0'); 2044 EXPECT_POISONED(buff[8]); 2045 } 2046 2047 TEST(MemorySanitizer, asprintf) { 2048 char *pbuf; 2049 EXPECT_POISONED(pbuf); 2050 int res = asprintf(&pbuf, "%d", 1234567); 2051 ASSERT_EQ(res, 7); 2052 EXPECT_NOT_POISONED(pbuf); 2053 ASSERT_EQ(pbuf[0], '1'); 2054 ASSERT_EQ(pbuf[1], '2'); 2055 ASSERT_EQ(pbuf[2], '3'); 2056 ASSERT_EQ(pbuf[6], '7'); 2057 ASSERT_EQ(pbuf[7], 0); 2058 free(pbuf); 2059 } 2060 2061 TEST(MemorySanitizer, mbstowcs) { 2062 const char *x = "abc"; 2063 wchar_t buff[10]; 2064 int res = mbstowcs(buff, x, 2); 2065 EXPECT_EQ(2, res); 2066 EXPECT_EQ(L'a', buff[0]); 2067 EXPECT_EQ(L'b', buff[1]); 2068 EXPECT_POISONED(buff[2]); 2069 res = mbstowcs(buff, x, 10); 2070 EXPECT_EQ(3, res); 2071 EXPECT_NOT_POISONED(buff[3]); 2072 } 2073 2074 TEST(MemorySanitizer, wcstombs) { 2075 const wchar_t *x = L"abc"; 2076 char buff[10]; 2077 int res = wcstombs(buff, x, 4); 2078 EXPECT_EQ(res, 3); 2079 EXPECT_EQ(buff[0], 'a'); 2080 EXPECT_EQ(buff[1], 'b'); 2081 EXPECT_EQ(buff[2], 'c'); 2082 } 2083 2084 TEST(MemorySanitizer, wcsrtombs) { 2085 const wchar_t *x = L"abc"; 2086 const wchar_t *p = x; 2087 char buff[10]; 2088 mbstate_t mbs; 2089 memset(&mbs, 0, sizeof(mbs)); 2090 int res = wcsrtombs(buff, &p, 4, &mbs); 2091 EXPECT_EQ(res, 3); 2092 EXPECT_EQ(buff[0], 'a'); 2093 EXPECT_EQ(buff[1], 'b'); 2094 EXPECT_EQ(buff[2], 'c'); 2095 EXPECT_EQ(buff[3], '\0'); 2096 EXPECT_POISONED(buff[4]); 2097 } 2098 2099 TEST(MemorySanitizer, wcsnrtombs) { 2100 const wchar_t *x = L"abc"; 2101 const wchar_t *p = x; 2102 char buff[10]; 2103 mbstate_t mbs; 2104 memset(&mbs, 0, sizeof(mbs)); 2105 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 2106 EXPECT_EQ(res, 2); 2107 EXPECT_EQ(buff[0], 'a'); 2108 EXPECT_EQ(buff[1], 'b'); 2109 EXPECT_POISONED(buff[2]); 2110 } 2111 2112 TEST(MemorySanitizer, wcrtomb) { 2113 wchar_t x = L'a'; 2114 char buff[10]; 2115 mbstate_t mbs; 2116 memset(&mbs, 0, sizeof(mbs)); 2117 size_t res = wcrtomb(buff, x, &mbs); 2118 EXPECT_EQ(res, (size_t)1); 2119 EXPECT_EQ(buff[0], 'a'); 2120 } 2121 2122 TEST(MemorySanitizer, wctomb) { 2123 wchar_t x = L'a'; 2124 char buff[10]; 2125 wctomb(nullptr, x); 2126 int res = wctomb(buff, x); 2127 EXPECT_EQ(res, 1); 2128 EXPECT_EQ(buff[0], 'a'); 2129 EXPECT_POISONED(buff[1]); 2130 } 2131 2132 TEST(MemorySanitizer, wmemset) { 2133 wchar_t x[25]; 2134 break_optimization(x); 2135 EXPECT_POISONED(x[0]); 2136 wmemset(x, L'A', 10); 2137 EXPECT_EQ(x[0], L'A'); 2138 EXPECT_EQ(x[9], L'A'); 2139 EXPECT_POISONED(x[10]); 2140 } 2141 2142 TEST(MemorySanitizer, mbtowc) { 2143 const char *x = "abc"; 2144 wchar_t wx; 2145 int res = mbtowc(&wx, x, 3); 2146 EXPECT_GT(res, 0); 2147 EXPECT_NOT_POISONED(wx); 2148 } 2149 2150 TEST(MemorySanitizer, mbrtowc) { 2151 mbstate_t mbs = {}; 2152 2153 wchar_t wc; 2154 size_t res = mbrtowc(&wc, "\377", 1, &mbs); 2155 EXPECT_EQ(res, -1ULL); 2156 2157 res = mbrtowc(&wc, "abc", 3, &mbs); 2158 EXPECT_GT(res, 0ULL); 2159 EXPECT_NOT_POISONED(wc); 2160 } 2161 2162 TEST(MemorySanitizer, wcsftime) { 2163 wchar_t x[100]; 2164 time_t t = time(NULL); 2165 struct tm tms; 2166 struct tm *tmres = localtime_r(&t, &tms); 2167 ASSERT_NE((void *)0, tmres); 2168 size_t res = wcsftime(x, sizeof(x) / sizeof(x[0]), L"%Y-%m-%d", tmres); 2169 EXPECT_GT(res, 0UL); 2170 EXPECT_EQ(res, wcslen(x)); 2171 } 2172 2173 TEST(MemorySanitizer, gettimeofday) { 2174 struct timeval tv; 2175 struct timezone tz; 2176 break_optimization(&tv); 2177 break_optimization(&tz); 2178 ASSERT_EQ(16U, sizeof(tv)); 2179 ASSERT_EQ(8U, sizeof(tz)); 2180 EXPECT_POISONED(tv.tv_sec); 2181 EXPECT_POISONED(tv.tv_usec); 2182 EXPECT_POISONED(tz.tz_minuteswest); 2183 EXPECT_POISONED(tz.tz_dsttime); 2184 ASSERT_EQ(0, gettimeofday(&tv, &tz)); 2185 EXPECT_NOT_POISONED(tv.tv_sec); 2186 EXPECT_NOT_POISONED(tv.tv_usec); 2187 EXPECT_NOT_POISONED(tz.tz_minuteswest); 2188 EXPECT_NOT_POISONED(tz.tz_dsttime); 2189 } 2190 2191 TEST(MemorySanitizer, clock_gettime) { 2192 struct timespec tp; 2193 EXPECT_POISONED(tp.tv_sec); 2194 EXPECT_POISONED(tp.tv_nsec); 2195 ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &tp)); 2196 EXPECT_NOT_POISONED(tp.tv_sec); 2197 EXPECT_NOT_POISONED(tp.tv_nsec); 2198 } 2199 2200 TEST(MemorySanitizer, clock_getres) { 2201 struct timespec tp; 2202 EXPECT_POISONED(tp.tv_sec); 2203 EXPECT_POISONED(tp.tv_nsec); 2204 ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, 0)); 2205 EXPECT_POISONED(tp.tv_sec); 2206 EXPECT_POISONED(tp.tv_nsec); 2207 ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, &tp)); 2208 EXPECT_NOT_POISONED(tp.tv_sec); 2209 EXPECT_NOT_POISONED(tp.tv_nsec); 2210 } 2211 2212 TEST(MemorySanitizer, getitimer) { 2213 struct itimerval it1, it2; 2214 int res; 2215 EXPECT_POISONED(it1.it_interval.tv_sec); 2216 EXPECT_POISONED(it1.it_interval.tv_usec); 2217 EXPECT_POISONED(it1.it_value.tv_sec); 2218 EXPECT_POISONED(it1.it_value.tv_usec); 2219 res = getitimer(ITIMER_VIRTUAL, &it1); 2220 ASSERT_EQ(0, res); 2221 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 2222 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 2223 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 2224 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 2225 2226 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 2227 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 2228 2229 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 2230 ASSERT_EQ(0, res); 2231 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 2232 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 2233 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 2234 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 2235 2236 // Check that old_value can be 0, and disable the timer. 2237 memset(&it1, 0, sizeof(it1)); 2238 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 2239 ASSERT_EQ(0, res); 2240 } 2241 2242 TEST(MemorySanitizer, setitimer_null) { 2243 setitimer(ITIMER_VIRTUAL, 0, 0); 2244 // Not testing the return value, since it the behaviour seems to differ 2245 // between libc implementations and POSIX. 2246 // Should never crash, though. 2247 } 2248 2249 TEST(MemorySanitizer, time) { 2250 time_t t; 2251 EXPECT_POISONED(t); 2252 time_t t2 = time(&t); 2253 ASSERT_NE(t2, (time_t)-1); 2254 EXPECT_NOT_POISONED(t); 2255 } 2256 2257 TEST(MemorySanitizer, strptime) { 2258 struct tm time; 2259 char *p = strptime("11/1/2013-05:39", "%m/%d/%Y-%H:%M", &time); 2260 ASSERT_TRUE(p != NULL); 2261 EXPECT_NOT_POISONED(time.tm_sec); 2262 EXPECT_NOT_POISONED(time.tm_hour); 2263 EXPECT_NOT_POISONED(time.tm_year); 2264 } 2265 2266 TEST(MemorySanitizer, localtime) { 2267 time_t t = 123; 2268 struct tm *time = localtime(&t); 2269 ASSERT_TRUE(time != NULL); 2270 EXPECT_NOT_POISONED(time->tm_sec); 2271 EXPECT_NOT_POISONED(time->tm_hour); 2272 EXPECT_NOT_POISONED(time->tm_year); 2273 EXPECT_NOT_POISONED(time->tm_isdst); 2274 EXPECT_NE(0U, strlen(time->tm_zone)); 2275 } 2276 2277 TEST(MemorySanitizer, localtime_r) { 2278 time_t t = 123; 2279 struct tm time; 2280 struct tm *res = localtime_r(&t, &time); 2281 ASSERT_TRUE(res != NULL); 2282 EXPECT_NOT_POISONED(time.tm_sec); 2283 EXPECT_NOT_POISONED(time.tm_hour); 2284 EXPECT_NOT_POISONED(time.tm_year); 2285 EXPECT_NOT_POISONED(time.tm_isdst); 2286 EXPECT_NE(0U, strlen(time.tm_zone)); 2287 } 2288 2289 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2290 /* Creates a temporary file with contents similar to /etc/fstab to be used 2291 with getmntent{_r}. */ 2292 class TempFstabFile { 2293 public: 2294 TempFstabFile() : fd (-1) { } 2295 ~TempFstabFile() { 2296 if (fd >= 0) 2297 close (fd); 2298 } 2299 2300 bool Create(void) { 2301 snprintf(tmpfile, sizeof(tmpfile), "/tmp/msan.getmntent.tmp.XXXXXX"); 2302 2303 fd = mkstemp(tmpfile); 2304 if (fd == -1) 2305 return false; 2306 2307 const char entry[] = "/dev/root / ext4 errors=remount-ro 0 1"; 2308 size_t entrylen = sizeof(entry); 2309 2310 size_t bytesWritten = write(fd, entry, entrylen); 2311 if (entrylen != bytesWritten) 2312 return false; 2313 2314 return true; 2315 } 2316 2317 const char* FileName(void) { 2318 return tmpfile; 2319 } 2320 2321 private: 2322 char tmpfile[128]; 2323 int fd; 2324 }; 2325 #endif 2326 2327 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2328 TEST(MemorySanitizer, getmntent) { 2329 TempFstabFile fstabtmp; 2330 ASSERT_TRUE(fstabtmp.Create()); 2331 FILE *fp = setmntent(fstabtmp.FileName(), "r"); 2332 2333 struct mntent *mnt = getmntent(fp); 2334 ASSERT_TRUE(mnt != NULL); 2335 ASSERT_NE(0U, strlen(mnt->mnt_fsname)); 2336 ASSERT_NE(0U, strlen(mnt->mnt_dir)); 2337 ASSERT_NE(0U, strlen(mnt->mnt_type)); 2338 ASSERT_NE(0U, strlen(mnt->mnt_opts)); 2339 EXPECT_NOT_POISONED(mnt->mnt_freq); 2340 EXPECT_NOT_POISONED(mnt->mnt_passno); 2341 fclose(fp); 2342 } 2343 #endif 2344 2345 #ifdef __GLIBC__ 2346 TEST(MemorySanitizer, getmntent_r) { 2347 TempFstabFile fstabtmp; 2348 ASSERT_TRUE(fstabtmp.Create()); 2349 FILE *fp = setmntent(fstabtmp.FileName(), "r"); 2350 2351 struct mntent mntbuf; 2352 char buf[1000]; 2353 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 2354 ASSERT_TRUE(mnt != NULL); 2355 ASSERT_NE(0U, strlen(mnt->mnt_fsname)); 2356 ASSERT_NE(0U, strlen(mnt->mnt_dir)); 2357 ASSERT_NE(0U, strlen(mnt->mnt_type)); 2358 ASSERT_NE(0U, strlen(mnt->mnt_opts)); 2359 EXPECT_NOT_POISONED(mnt->mnt_freq); 2360 EXPECT_NOT_POISONED(mnt->mnt_passno); 2361 fclose(fp); 2362 } 2363 #endif 2364 2365 #if !defined(__NetBSD__) 2366 TEST(MemorySanitizer, ether) { 2367 const char *asc = "11:22:33:44:55:66"; 2368 struct ether_addr *paddr = ether_aton(asc); 2369 EXPECT_NOT_POISONED(*paddr); 2370 2371 struct ether_addr addr; 2372 paddr = ether_aton_r(asc, &addr); 2373 ASSERT_EQ(paddr, &addr); 2374 EXPECT_NOT_POISONED(addr); 2375 2376 char *s = ether_ntoa(&addr); 2377 ASSERT_NE(0U, strlen(s)); 2378 2379 char buf[100]; 2380 s = ether_ntoa_r(&addr, buf); 2381 ASSERT_EQ(s, buf); 2382 ASSERT_NE(0U, strlen(buf)); 2383 } 2384 #endif 2385 2386 TEST(MemorySanitizer, mmap) { 2387 const int size = 4096; 2388 void *p1, *p2; 2389 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 2390 __msan_poison(p1, size); 2391 munmap(p1, size); 2392 for (int i = 0; i < 1000; i++) { 2393 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 2394 if (p2 == p1) 2395 break; 2396 else 2397 munmap(p2, size); 2398 } 2399 if (p1 == p2) { 2400 EXPECT_NOT_POISONED(*(char*)p2); 2401 munmap(p2, size); 2402 } 2403 } 2404 2405 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2406 // FIXME: enable and add ecvt. 2407 // FIXME: check why msandr does nt handle fcvt. 2408 TEST(MemorySanitizer, fcvt) { 2409 int a, b; 2410 break_optimization(&a); 2411 break_optimization(&b); 2412 EXPECT_POISONED(a); 2413 EXPECT_POISONED(b); 2414 char *str = fcvt(12345.6789, 10, &a, &b); 2415 EXPECT_NOT_POISONED(a); 2416 EXPECT_NOT_POISONED(b); 2417 ASSERT_NE(nullptr, str); 2418 EXPECT_NOT_POISONED(str[0]); 2419 ASSERT_NE(0U, strlen(str)); 2420 } 2421 #endif 2422 2423 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 2424 TEST(MemorySanitizer, fcvt_long) { 2425 int a, b; 2426 break_optimization(&a); 2427 break_optimization(&b); 2428 EXPECT_POISONED(a); 2429 EXPECT_POISONED(b); 2430 char *str = fcvt(111111112345.6789, 10, &a, &b); 2431 EXPECT_NOT_POISONED(a); 2432 EXPECT_NOT_POISONED(b); 2433 ASSERT_NE(nullptr, str); 2434 EXPECT_NOT_POISONED(str[0]); 2435 ASSERT_NE(0U, strlen(str)); 2436 } 2437 #endif 2438 2439 TEST(MemorySanitizer, memchr) { 2440 char x[10]; 2441 break_optimization(x); 2442 EXPECT_POISONED(x[0]); 2443 x[2] = '2'; 2444 void *res; 2445 EXPECT_UMR(res = memchr(x, '2', 10)); 2446 EXPECT_NOT_POISONED(res); 2447 x[0] = '0'; 2448 x[1] = '1'; 2449 res = memchr(x, '2', 10); 2450 EXPECT_EQ(&x[2], res); 2451 EXPECT_UMR(res = memchr(x, '3', 10)); 2452 EXPECT_NOT_POISONED(res); 2453 } 2454 2455 TEST(MemorySanitizer, memrchr) { 2456 char x[10]; 2457 break_optimization(x); 2458 EXPECT_POISONED(x[0]); 2459 x[9] = '9'; 2460 void *res; 2461 EXPECT_UMR(res = memrchr(x, '9', 10)); 2462 EXPECT_NOT_POISONED(res); 2463 x[0] = '0'; 2464 x[1] = '1'; 2465 res = memrchr(x, '0', 2); 2466 EXPECT_EQ(&x[0], res); 2467 EXPECT_UMR(res = memrchr(x, '7', 10)); 2468 EXPECT_NOT_POISONED(res); 2469 } 2470 2471 TEST(MemorySanitizer, frexp) { 2472 int x; 2473 x = *GetPoisoned<int>(); 2474 double r = frexp(1.1, &x); 2475 EXPECT_NOT_POISONED(r); 2476 EXPECT_NOT_POISONED(x); 2477 2478 x = *GetPoisoned<int>(); 2479 float rf = frexpf(1.1, &x); 2480 EXPECT_NOT_POISONED(rf); 2481 EXPECT_NOT_POISONED(x); 2482 2483 x = *GetPoisoned<int>(); 2484 double rl = frexpl(1.1, &x); 2485 EXPECT_NOT_POISONED(rl); 2486 EXPECT_NOT_POISONED(x); 2487 } 2488 2489 namespace { 2490 2491 static int cnt; 2492 2493 void SigactionHandler(int signo, siginfo_t* si, void* uc) { 2494 ASSERT_EQ(signo, SIGPROF); 2495 ASSERT_TRUE(si != NULL); 2496 EXPECT_NOT_POISONED(si->si_errno); 2497 EXPECT_NOT_POISONED(si->si_pid); 2498 #ifdef _UC_MACHINE_PC 2499 EXPECT_NOT_POISONED(_UC_MACHINE_PC((ucontext_t*)uc)); 2500 #else 2501 # if __linux__ 2502 # if defined(__x86_64__) 2503 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 2504 # elif defined(__i386__) 2505 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 2506 # endif 2507 # endif 2508 #endif 2509 ++cnt; 2510 } 2511 2512 TEST(MemorySanitizer, sigaction) { 2513 struct sigaction act = {}; 2514 struct sigaction oldact = {}; 2515 struct sigaction origact = {}; 2516 2517 sigaction(SIGPROF, 0, &origact); 2518 2519 act.sa_flags |= SA_SIGINFO; 2520 act.sa_sigaction = &SigactionHandler; 2521 sigaction(SIGPROF, &act, 0); 2522 2523 kill(getpid(), SIGPROF); 2524 2525 act.sa_flags &= ~SA_SIGINFO; 2526 act.sa_handler = SIG_DFL; 2527 sigaction(SIGPROF, &act, 0); 2528 2529 act.sa_flags &= ~SA_SIGINFO; 2530 act.sa_handler = SIG_IGN; 2531 sigaction(SIGPROF, &act, &oldact); 2532 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 2533 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 2534 kill(getpid(), SIGPROF); 2535 2536 act.sa_flags |= SA_SIGINFO; 2537 act.sa_sigaction = &SigactionHandler; 2538 sigaction(SIGPROF, &act, &oldact); 2539 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 2540 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 2541 kill(getpid(), SIGPROF); 2542 2543 act.sa_flags &= ~SA_SIGINFO; 2544 act.sa_handler = SIG_DFL; 2545 sigaction(SIGPROF, &act, &oldact); 2546 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 2547 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 2548 EXPECT_EQ(2, cnt); 2549 2550 sigaction(SIGPROF, &origact, 0); 2551 } 2552 2553 } // namespace 2554 2555 2556 TEST(MemorySanitizer, sigemptyset) { 2557 sigset_t s; 2558 EXPECT_POISONED(s); 2559 int res = sigemptyset(&s); 2560 ASSERT_EQ(0, res); 2561 EXPECT_NOT_POISONED(s); 2562 } 2563 2564 TEST(MemorySanitizer, sigfillset) { 2565 sigset_t s; 2566 EXPECT_POISONED(s); 2567 int res = sigfillset(&s); 2568 ASSERT_EQ(0, res); 2569 EXPECT_NOT_POISONED(s); 2570 } 2571 2572 TEST(MemorySanitizer, sigpending) { 2573 sigset_t s; 2574 EXPECT_POISONED(s); 2575 int res = sigpending(&s); 2576 ASSERT_EQ(0, res); 2577 EXPECT_NOT_POISONED(s); 2578 } 2579 2580 TEST(MemorySanitizer, sigprocmask) { 2581 sigset_t s; 2582 EXPECT_POISONED(s); 2583 int res = sigprocmask(SIG_BLOCK, 0, &s); 2584 ASSERT_EQ(0, res); 2585 EXPECT_NOT_POISONED(s); 2586 } 2587 2588 TEST(MemorySanitizer, pthread_sigmask) { 2589 sigset_t s; 2590 EXPECT_POISONED(s); 2591 int res = pthread_sigmask(SIG_BLOCK, 0, &s); 2592 ASSERT_EQ(0, res); 2593 EXPECT_NOT_POISONED(s); 2594 } 2595 2596 struct StructWithDtor { 2597 ~StructWithDtor(); 2598 }; 2599 2600 NOINLINE StructWithDtor::~StructWithDtor() { 2601 break_optimization(0); 2602 } 2603 2604 TEST(MemorySanitizer, Invoke) { 2605 StructWithDtor s; // Will cause the calls to become invokes. 2606 EXPECT_NOT_POISONED(0); 2607 EXPECT_POISONED(*GetPoisoned<int>()); 2608 EXPECT_NOT_POISONED(0); 2609 EXPECT_POISONED(*GetPoisoned<int>()); 2610 EXPECT_POISONED(ReturnPoisoned<S4>()); 2611 } 2612 2613 TEST(MemorySanitizer, ptrtoint) { 2614 // Test that shadow is propagated through pointer-to-integer conversion. 2615 unsigned char c = 0; 2616 __msan_poison(&c, 1); 2617 uintptr_t u = (uintptr_t)c << 8; 2618 EXPECT_NOT_POISONED(u & 0xFF00FF); 2619 EXPECT_POISONED(u & 0xFF00); 2620 2621 break_optimization(&u); 2622 void* p = (void*)u; 2623 2624 break_optimization(&p); 2625 EXPECT_POISONED(p); 2626 EXPECT_NOT_POISONED(((uintptr_t)p) & 0xFF00FF); 2627 EXPECT_POISONED(((uintptr_t)p) & 0xFF00); 2628 } 2629 2630 static void vaargsfn2(int guard, ...) { 2631 va_list vl; 2632 va_start(vl, guard); 2633 EXPECT_NOT_POISONED(va_arg(vl, int)); 2634 EXPECT_NOT_POISONED(va_arg(vl, int)); 2635 EXPECT_NOT_POISONED(va_arg(vl, int)); 2636 EXPECT_POISONED(va_arg(vl, double)); 2637 va_end(vl); 2638 } 2639 2640 static void vaargsfn(int guard, ...) { 2641 va_list vl; 2642 va_start(vl, guard); 2643 EXPECT_NOT_POISONED(va_arg(vl, int)); 2644 EXPECT_POISONED(va_arg(vl, int)); 2645 // The following call will overwrite __msan_param_tls. 2646 // Checks after it test that arg shadow was somehow saved across the call. 2647 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 2648 EXPECT_NOT_POISONED(va_arg(vl, int)); 2649 EXPECT_POISONED(va_arg(vl, int)); 2650 va_end(vl); 2651 } 2652 2653 TEST(MemorySanitizer, VAArgTest) { 2654 int* x = GetPoisoned<int>(); 2655 int* y = GetPoisoned<int>(4); 2656 vaargsfn(1, 13, *x, 42, *y); 2657 } 2658 2659 static void vaargsfn_many(int guard, ...) { 2660 va_list vl; 2661 va_start(vl, guard); 2662 EXPECT_NOT_POISONED(va_arg(vl, int)); 2663 EXPECT_POISONED(va_arg(vl, int)); 2664 EXPECT_NOT_POISONED(va_arg(vl, int)); 2665 EXPECT_NOT_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_POISONED(va_arg(vl, int)); 2672 va_end(vl); 2673 } 2674 2675 TEST(MemorySanitizer, VAArgManyTest) { 2676 int* x = GetPoisoned<int>(); 2677 int* y = GetPoisoned<int>(4); 2678 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 2679 } 2680 2681 static void vaargsfn_manyfix(int g1, int g2, int g3, int g4, int g5, int g6, int g7, int g8, int g9, ...) { 2682 va_list vl; 2683 va_start(vl, g9); 2684 EXPECT_NOT_POISONED(va_arg(vl, int)); 2685 EXPECT_POISONED(va_arg(vl, int)); 2686 va_end(vl); 2687 } 2688 2689 TEST(MemorySanitizer, VAArgManyFixTest) { 2690 int* x = GetPoisoned<int>(); 2691 int* y = GetPoisoned<int>(); 2692 vaargsfn_manyfix(1, *x, 3, 4, 5, 6, 7, 8, 9, 10, *y); 2693 } 2694 2695 static void vaargsfn_pass2(va_list vl) { 2696 EXPECT_NOT_POISONED(va_arg(vl, int)); 2697 EXPECT_NOT_POISONED(va_arg(vl, int)); 2698 EXPECT_POISONED(va_arg(vl, int)); 2699 } 2700 2701 static void vaargsfn_pass(int guard, ...) { 2702 va_list vl; 2703 va_start(vl, guard); 2704 EXPECT_POISONED(va_arg(vl, int)); 2705 vaargsfn_pass2(vl); 2706 va_end(vl); 2707 } 2708 2709 TEST(MemorySanitizer, VAArgPass) { 2710 int* x = GetPoisoned<int>(); 2711 int* y = GetPoisoned<int>(4); 2712 vaargsfn_pass(1, *x, 2, 3, *y); 2713 } 2714 2715 static void vaargsfn_copy2(va_list vl) { 2716 EXPECT_NOT_POISONED(va_arg(vl, int)); 2717 EXPECT_POISONED(va_arg(vl, int)); 2718 } 2719 2720 static void vaargsfn_copy(int guard, ...) { 2721 va_list vl; 2722 va_start(vl, guard); 2723 EXPECT_NOT_POISONED(va_arg(vl, int)); 2724 EXPECT_POISONED(va_arg(vl, int)); 2725 va_list vl2; 2726 va_copy(vl2, vl); 2727 vaargsfn_copy2(vl2); 2728 EXPECT_NOT_POISONED(va_arg(vl, int)); 2729 EXPECT_POISONED(va_arg(vl, int)); 2730 va_end(vl); 2731 } 2732 2733 TEST(MemorySanitizer, VAArgCopy) { 2734 int* x = GetPoisoned<int>(); 2735 int* y = GetPoisoned<int>(4); 2736 vaargsfn_copy(1, 2, *x, 3, *y); 2737 } 2738 2739 static void vaargsfn_ptr(int guard, ...) { 2740 va_list vl; 2741 va_start(vl, guard); 2742 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2743 EXPECT_POISONED(va_arg(vl, int*)); 2744 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2745 EXPECT_POISONED(va_arg(vl, double*)); 2746 va_end(vl); 2747 } 2748 2749 TEST(MemorySanitizer, VAArgPtr) { 2750 int** x = GetPoisoned<int*>(); 2751 double** y = GetPoisoned<double*>(8); 2752 int z; 2753 vaargsfn_ptr(1, &z, *x, &z, *y); 2754 } 2755 2756 static void vaargsfn_overflow(int guard, ...) { 2757 va_list vl; 2758 va_start(vl, guard); 2759 EXPECT_NOT_POISONED(va_arg(vl, int)); 2760 EXPECT_NOT_POISONED(va_arg(vl, int)); 2761 EXPECT_POISONED(va_arg(vl, int)); 2762 EXPECT_NOT_POISONED(va_arg(vl, int)); 2763 EXPECT_NOT_POISONED(va_arg(vl, int)); 2764 EXPECT_NOT_POISONED(va_arg(vl, int)); 2765 2766 EXPECT_NOT_POISONED(va_arg(vl, double)); 2767 EXPECT_NOT_POISONED(va_arg(vl, double)); 2768 EXPECT_NOT_POISONED(va_arg(vl, double)); 2769 EXPECT_POISONED(va_arg(vl, double)); 2770 EXPECT_NOT_POISONED(va_arg(vl, double)); 2771 EXPECT_POISONED(va_arg(vl, int*)); 2772 EXPECT_NOT_POISONED(va_arg(vl, double)); 2773 EXPECT_NOT_POISONED(va_arg(vl, double)); 2774 2775 EXPECT_POISONED(va_arg(vl, int)); 2776 EXPECT_POISONED(va_arg(vl, double)); 2777 EXPECT_POISONED(va_arg(vl, int*)); 2778 2779 EXPECT_NOT_POISONED(va_arg(vl, int)); 2780 EXPECT_NOT_POISONED(va_arg(vl, double)); 2781 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2782 2783 EXPECT_POISONED(va_arg(vl, int)); 2784 EXPECT_POISONED(va_arg(vl, double)); 2785 EXPECT_POISONED(va_arg(vl, int*)); 2786 2787 va_end(vl); 2788 } 2789 2790 TEST(MemorySanitizer, VAArgOverflow) { 2791 int* x = GetPoisoned<int>(); 2792 double* y = GetPoisoned<double>(8); 2793 int** p = GetPoisoned<int*>(16); 2794 int z; 2795 vaargsfn_overflow(1, 2796 1, 2, *x, 4, 5, 6, 2797 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2798 // the following args will overflow for sure 2799 *x, *y, *p, 2800 7, 9.9, &z, 2801 *x, *y, *p); 2802 } 2803 2804 static void vaargsfn_tlsoverwrite2(int guard, ...) { 2805 va_list vl; 2806 va_start(vl, guard); 2807 for (int i = 0; i < 20; ++i) 2808 EXPECT_NOT_POISONED(va_arg(vl, int)); 2809 va_end(vl); 2810 } 2811 2812 static void vaargsfn_tlsoverwrite(int guard, ...) { 2813 // This call will overwrite TLS contents unless it's backed up somewhere. 2814 vaargsfn_tlsoverwrite2(2, 2815 42, 42, 42, 42, 42, 2816 42, 42, 42, 42, 42, 2817 42, 42, 42, 42, 42, 2818 42, 42, 42, 42, 42); // 20x 2819 va_list vl; 2820 va_start(vl, guard); 2821 for (int i = 0; i < 20; ++i) 2822 EXPECT_POISONED(va_arg(vl, int)); 2823 va_end(vl); 2824 } 2825 2826 TEST(MemorySanitizer, VAArgTLSOverwrite) { 2827 int* x = GetPoisoned<int>(); 2828 vaargsfn_tlsoverwrite(1, 2829 *x, *x, *x, *x, *x, 2830 *x, *x, *x, *x, *x, 2831 *x, *x, *x, *x, *x, 2832 *x, *x, *x, *x, *x); // 20x 2833 2834 } 2835 2836 struct StructByVal { 2837 int a, b, c, d, e, f; 2838 }; 2839 2840 static void vaargsfn_structbyval(int guard, ...) { 2841 va_list vl; 2842 va_start(vl, guard); 2843 { 2844 StructByVal s = va_arg(vl, StructByVal); 2845 EXPECT_NOT_POISONED(s.a); 2846 EXPECT_POISONED(s.b); 2847 EXPECT_NOT_POISONED(s.c); 2848 EXPECT_POISONED(s.d); 2849 EXPECT_NOT_POISONED(s.e); 2850 EXPECT_POISONED(s.f); 2851 } 2852 { 2853 StructByVal s = va_arg(vl, StructByVal); 2854 EXPECT_NOT_POISONED(s.a); 2855 EXPECT_POISONED(s.b); 2856 EXPECT_NOT_POISONED(s.c); 2857 EXPECT_POISONED(s.d); 2858 EXPECT_NOT_POISONED(s.e); 2859 EXPECT_POISONED(s.f); 2860 } 2861 va_end(vl); 2862 } 2863 2864 TEST(MemorySanitizer, VAArgStructByVal) { 2865 StructByVal s; 2866 s.a = 1; 2867 s.b = *GetPoisoned<int>(); 2868 s.c = 2; 2869 s.d = *GetPoisoned<int>(); 2870 s.e = 3; 2871 s.f = *GetPoisoned<int>(); 2872 vaargsfn_structbyval(0, s, s); 2873 } 2874 2875 NOINLINE void StructByValTestFunc(struct StructByVal s) { 2876 EXPECT_NOT_POISONED(s.a); 2877 EXPECT_POISONED(s.b); 2878 EXPECT_NOT_POISONED(s.c); 2879 EXPECT_POISONED(s.d); 2880 EXPECT_NOT_POISONED(s.e); 2881 EXPECT_POISONED(s.f); 2882 } 2883 2884 NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2885 StructByValTestFunc(s); 2886 } 2887 2888 NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2889 StructByValTestFunc(s); 2890 } 2891 2892 TEST(MemorySanitizer, StructByVal) { 2893 // Large aggregates are passed as "byval" pointer argument in LLVM. 2894 struct StructByVal s; 2895 s.a = 1; 2896 s.b = *GetPoisoned<int>(); 2897 s.c = 2; 2898 s.d = *GetPoisoned<int>(); 2899 s.e = 3; 2900 s.f = *GetPoisoned<int>(); 2901 StructByValTestFunc(s); 2902 StructByValTestFunc1(s); 2903 StructByValTestFunc2(0, s); 2904 } 2905 2906 2907 #if MSAN_HAS_M128 2908 NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2909 NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2910 TEST(MemorySanitizer, m128) { 2911 __m128i a = _mm_set1_epi16(0x1234); 2912 __m128i b = _mm_set1_epi16(0x7890); 2913 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2914 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2915 } 2916 // FIXME: add more tests for __m128i. 2917 #endif // MSAN_HAS_M128 2918 2919 // We should not complain when copying this poisoned hole. 2920 struct StructWithHole { 2921 U4 a; 2922 // 4-byte hole. 2923 U8 b; 2924 }; 2925 2926 NOINLINE StructWithHole ReturnStructWithHole() { 2927 StructWithHole res; 2928 __msan_poison(&res, sizeof(res)); 2929 res.a = 1; 2930 res.b = 2; 2931 return res; 2932 } 2933 2934 TEST(MemorySanitizer, StructWithHole) { 2935 StructWithHole a = ReturnStructWithHole(); 2936 break_optimization(&a); 2937 } 2938 2939 template <class T> 2940 NOINLINE T ReturnStruct() { 2941 T res; 2942 __msan_poison(&res, sizeof(res)); 2943 res.a = 1; 2944 return res; 2945 } 2946 2947 template <class T> 2948 NOINLINE void TestReturnStruct() { 2949 T s1 = ReturnStruct<T>(); 2950 EXPECT_NOT_POISONED(s1.a); 2951 EXPECT_POISONED(s1.b); 2952 } 2953 2954 struct SSS1 { 2955 int a, b, c; 2956 }; 2957 struct SSS2 { 2958 int b, a, c; 2959 }; 2960 struct SSS3 { 2961 int b, c, a; 2962 }; 2963 struct SSS4 { 2964 int c, b, a; 2965 }; 2966 2967 struct SSS5 { 2968 int a; 2969 float b; 2970 }; 2971 struct SSS6 { 2972 int a; 2973 double b; 2974 }; 2975 struct SSS7 { 2976 S8 b; 2977 int a; 2978 }; 2979 struct SSS8 { 2980 S2 b; 2981 S8 a; 2982 }; 2983 2984 TEST(MemorySanitizer, IntStruct3) { 2985 TestReturnStruct<SSS1>(); 2986 TestReturnStruct<SSS2>(); 2987 TestReturnStruct<SSS3>(); 2988 TestReturnStruct<SSS4>(); 2989 TestReturnStruct<SSS5>(); 2990 TestReturnStruct<SSS6>(); 2991 TestReturnStruct<SSS7>(); 2992 TestReturnStruct<SSS8>(); 2993 } 2994 2995 struct LongStruct { 2996 U1 a1, b1; 2997 U2 a2, b2; 2998 U4 a4, b4; 2999 U8 a8, b8; 3000 }; 3001 3002 NOINLINE LongStruct ReturnLongStruct1() { 3003 LongStruct res; 3004 __msan_poison(&res, sizeof(res)); 3005 res.a1 = res.a2 = res.a4 = res.a8 = 111; 3006 // leaves b1, .., b8 poisoned. 3007 return res; 3008 } 3009 3010 NOINLINE LongStruct ReturnLongStruct2() { 3011 LongStruct res; 3012 __msan_poison(&res, sizeof(res)); 3013 res.b1 = res.b2 = res.b4 = res.b8 = 111; 3014 // leaves a1, .., a8 poisoned. 3015 return res; 3016 } 3017 3018 TEST(MemorySanitizer, LongStruct) { 3019 LongStruct s1 = ReturnLongStruct1(); 3020 __msan_print_shadow(&s1, sizeof(s1)); 3021 EXPECT_NOT_POISONED(s1.a1); 3022 EXPECT_NOT_POISONED(s1.a2); 3023 EXPECT_NOT_POISONED(s1.a4); 3024 EXPECT_NOT_POISONED(s1.a8); 3025 3026 EXPECT_POISONED(s1.b1); 3027 EXPECT_POISONED(s1.b2); 3028 EXPECT_POISONED(s1.b4); 3029 EXPECT_POISONED(s1.b8); 3030 3031 LongStruct s2 = ReturnLongStruct2(); 3032 __msan_print_shadow(&s2, sizeof(s2)); 3033 EXPECT_NOT_POISONED(s2.b1); 3034 EXPECT_NOT_POISONED(s2.b2); 3035 EXPECT_NOT_POISONED(s2.b4); 3036 EXPECT_NOT_POISONED(s2.b8); 3037 3038 EXPECT_POISONED(s2.a1); 3039 EXPECT_POISONED(s2.a2); 3040 EXPECT_POISONED(s2.a4); 3041 EXPECT_POISONED(s2.a8); 3042 } 3043 3044 #if defined(__FreeBSD__) || defined(__NetBSD__) 3045 #define MSAN_TEST_PRLIMIT 0 3046 #elif defined(__GLIBC__) 3047 #define MSAN_TEST_PRLIMIT __GLIBC_PREREQ(2, 13) 3048 #else 3049 #define MSAN_TEST_PRLIMIT 1 3050 #endif 3051 3052 TEST(MemorySanitizer, getrlimit) { 3053 struct rlimit limit; 3054 __msan_poison(&limit, sizeof(limit)); 3055 int result = getrlimit(RLIMIT_DATA, &limit); 3056 ASSERT_EQ(result, 0); 3057 EXPECT_NOT_POISONED(limit.rlim_cur); 3058 EXPECT_NOT_POISONED(limit.rlim_max); 3059 3060 #if MSAN_TEST_PRLIMIT 3061 struct rlimit limit2; 3062 __msan_poison(&limit2, sizeof(limit2)); 3063 result = prlimit(getpid(), RLIMIT_DATA, &limit, &limit2); 3064 ASSERT_EQ(result, 0); 3065 EXPECT_NOT_POISONED(limit2.rlim_cur); 3066 EXPECT_NOT_POISONED(limit2.rlim_max); 3067 3068 __msan_poison(&limit, sizeof(limit)); 3069 result = prlimit(getpid(), RLIMIT_DATA, nullptr, &limit); 3070 ASSERT_EQ(result, 0); 3071 EXPECT_NOT_POISONED(limit.rlim_cur); 3072 EXPECT_NOT_POISONED(limit.rlim_max); 3073 3074 result = prlimit(getpid(), RLIMIT_DATA, &limit, nullptr); 3075 ASSERT_EQ(result, 0); 3076 #endif 3077 } 3078 3079 TEST(MemorySanitizer, getrusage) { 3080 struct rusage usage; 3081 __msan_poison(&usage, sizeof(usage)); 3082 int result = getrusage(RUSAGE_SELF, &usage); 3083 ASSERT_EQ(result, 0); 3084 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 3085 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 3086 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 3087 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 3088 EXPECT_NOT_POISONED(usage.ru_maxrss); 3089 EXPECT_NOT_POISONED(usage.ru_minflt); 3090 EXPECT_NOT_POISONED(usage.ru_majflt); 3091 EXPECT_NOT_POISONED(usage.ru_inblock); 3092 EXPECT_NOT_POISONED(usage.ru_oublock); 3093 EXPECT_NOT_POISONED(usage.ru_nvcsw); 3094 EXPECT_NOT_POISONED(usage.ru_nivcsw); 3095 } 3096 3097 #if defined(__FreeBSD__) || defined(__NetBSD__) 3098 static void GetProgramPath(char *buf, size_t sz) { 3099 #if defined(__FreeBSD__) 3100 int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 }; 3101 #elif defined(__NetBSD__) 3102 int mib[4] = { CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME}; 3103 #endif 3104 int res = sysctl(mib, 4, buf, &sz, NULL, 0); 3105 ASSERT_EQ(0, res); 3106 } 3107 #elif defined(__GLIBC__) || defined(MUSL) 3108 static void GetProgramPath(char *buf, size_t sz) { 3109 extern char *program_invocation_name; 3110 int res = snprintf(buf, sz, "%s", program_invocation_name); 3111 ASSERT_GE(res, 0); 3112 ASSERT_LT((size_t)res, sz); 3113 } 3114 #else 3115 # error "TODO: port this" 3116 #endif 3117 3118 static void dladdr_testfn() {} 3119 3120 TEST(MemorySanitizer, dladdr) { 3121 Dl_info info; 3122 __msan_poison(&info, sizeof(info)); 3123 int result = dladdr((const void*)dladdr_testfn, &info); 3124 ASSERT_NE(result, 0); 3125 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 3126 if (info.dli_fname) 3127 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 3128 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 3129 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 3130 if (info.dli_sname) 3131 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 3132 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 3133 } 3134 3135 #ifndef MSAN_TEST_DISABLE_DLOPEN 3136 3137 static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 3138 (*(int *)data)++; 3139 EXPECT_NOT_POISONED(info->dlpi_addr); 3140 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 3141 EXPECT_NOT_POISONED(info->dlpi_phnum); 3142 for (int i = 0; i < info->dlpi_phnum; ++i) 3143 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 3144 return 0; 3145 } 3146 3147 // Compute the path to our loadable DSO. We assume it's in the same 3148 // directory. Only use string routines that we intercept so far to do this. 3149 static void GetPathToLoadable(char *buf, size_t sz) { 3150 char program_path[kMaxPathLength]; 3151 GetProgramPath(program_path, sizeof(program_path)); 3152 3153 const char *last_slash = strrchr(program_path, '/'); 3154 ASSERT_NE(nullptr, last_slash); 3155 size_t dir_len = (size_t)(last_slash - program_path); 3156 #if defined(__x86_64__) 3157 static const char basename[] = "libmsan_loadable.x86_64.so"; 3158 #elif defined(__MIPSEB__) || defined(MIPSEB) 3159 static const char basename[] = "libmsan_loadable.mips64.so"; 3160 #elif defined(__mips64) 3161 static const char basename[] = "libmsan_loadable.mips64el.so"; 3162 #elif defined(__aarch64__) 3163 static const char basename[] = "libmsan_loadable.aarch64.so"; 3164 #elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 3165 static const char basename[] = "libmsan_loadable.powerpc64.so"; 3166 #elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 3167 static const char basename[] = "libmsan_loadable.powerpc64le.so"; 3168 #endif 3169 int res = snprintf(buf, sz, "%.*s/%s", 3170 (int)dir_len, program_path, basename); 3171 ASSERT_GE(res, 0); 3172 ASSERT_LT((size_t)res, sz); 3173 } 3174 3175 TEST(MemorySanitizer, dl_iterate_phdr) { 3176 char path[kMaxPathLength]; 3177 GetPathToLoadable(path, sizeof(path)); 3178 3179 // Having at least one dlopen'ed library in the process makes this more 3180 // entertaining. 3181 void *lib = dlopen(path, RTLD_LAZY); 3182 ASSERT_NE((void*)0, lib); 3183 3184 int count = 0; 3185 int result = dl_iterate_phdr(dl_phdr_callback, &count); 3186 ASSERT_GT(count, 0); 3187 3188 dlclose(lib); 3189 } 3190 3191 TEST(MemorySanitizer, dlopen) { 3192 char path[kMaxPathLength]; 3193 GetPathToLoadable(path, sizeof(path)); 3194 3195 // We need to clear shadow for globals when doing dlopen. In order to test 3196 // this, we have to poison the shadow for the DSO before we load it. In 3197 // general this is difficult, but the loader tends to reload things in the 3198 // same place, so we open, close, and then reopen. The global should always 3199 // start out clean after dlopen. 3200 for (int i = 0; i < 2; i++) { 3201 void *lib = dlopen(path, RTLD_LAZY); 3202 if (lib == NULL) { 3203 printf("dlerror: %s\n", dlerror()); 3204 ASSERT_TRUE(lib != NULL); 3205 } 3206 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 3207 ASSERT_TRUE(get_dso_global != NULL); 3208 void **dso_global = get_dso_global(); 3209 EXPECT_NOT_POISONED(*dso_global); 3210 __msan_poison(dso_global, sizeof(*dso_global)); 3211 EXPECT_POISONED(*dso_global); 3212 dlclose(lib); 3213 } 3214 } 3215 3216 // Regression test for a crash in dlopen() interceptor. 3217 TEST(MemorySanitizer, dlopenFailed) { 3218 const char *path = "/libmsan_loadable_does_not_exist.so"; 3219 void *lib = dlopen(path, RTLD_LAZY); 3220 ASSERT_TRUE(lib == NULL); 3221 } 3222 3223 #endif // MSAN_TEST_DISABLE_DLOPEN 3224 3225 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 3226 TEST(MemorySanitizer, sched_getaffinity) { 3227 cpu_set_t mask; 3228 if (sched_getaffinity(getpid(), sizeof(mask), &mask) == 0) 3229 EXPECT_NOT_POISONED(mask); 3230 else { 3231 // The call to sched_getaffinity() may have failed because the Affinity 3232 // mask is too small for the number of CPUs on the system (i.e. the 3233 // system has more than 1024 CPUs). Allocate a mask large enough for 3234 // twice as many CPUs. 3235 cpu_set_t *DynAffinity; 3236 DynAffinity = CPU_ALLOC(2048); 3237 int res = sched_getaffinity(getpid(), CPU_ALLOC_SIZE(2048), DynAffinity); 3238 ASSERT_EQ(0, res); 3239 EXPECT_NOT_POISONED(*DynAffinity); 3240 } 3241 } 3242 #endif 3243 3244 TEST(MemorySanitizer, scanf) { 3245 const char *input = "42 hello"; 3246 int* d = new int; 3247 char* s = new char[7]; 3248 int res = sscanf(input, "%d %5s", d, s); 3249 printf("res %d\n", res); 3250 ASSERT_EQ(res, 2); 3251 EXPECT_NOT_POISONED(*d); 3252 EXPECT_NOT_POISONED(s[0]); 3253 EXPECT_NOT_POISONED(s[1]); 3254 EXPECT_NOT_POISONED(s[2]); 3255 EXPECT_NOT_POISONED(s[3]); 3256 EXPECT_NOT_POISONED(s[4]); 3257 EXPECT_NOT_POISONED(s[5]); 3258 EXPECT_POISONED(s[6]); 3259 delete[] s; 3260 delete d; 3261 } 3262 3263 static void *SimpleThread_threadfn(void* data) { 3264 return new int; 3265 } 3266 3267 TEST(MemorySanitizer, SimpleThread) { 3268 pthread_t t; 3269 void *p; 3270 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 3271 ASSERT_EQ(0, res); 3272 EXPECT_NOT_POISONED(t); 3273 res = pthread_join(t, &p); 3274 ASSERT_EQ(0, res); 3275 EXPECT_NOT_POISONED(p); 3276 delete (int*)p; 3277 } 3278 3279 static void *SmallStackThread_threadfn(void* data) { 3280 return 0; 3281 } 3282 3283 #ifdef PTHREAD_STACK_MIN 3284 constexpr int kThreadStackMin = PTHREAD_STACK_MIN; 3285 #else 3286 constexpr int kThreadStackMin = 0; 3287 #endif 3288 3289 TEST(MemorySanitizer, SmallStackThread) { 3290 pthread_attr_t attr; 3291 pthread_t t; 3292 void *p; 3293 int res; 3294 res = pthread_attr_init(&attr); 3295 ASSERT_EQ(0, res); 3296 res = pthread_attr_setstacksize(&attr, std::max(kThreadStackMin, 64 * 1024)); 3297 ASSERT_EQ(0, res); 3298 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 3299 ASSERT_EQ(0, res); 3300 res = pthread_join(t, &p); 3301 ASSERT_EQ(0, res); 3302 res = pthread_attr_destroy(&attr); 3303 ASSERT_EQ(0, res); 3304 } 3305 3306 TEST(MemorySanitizer, SmallPreAllocatedStackThread) { 3307 pthread_attr_t attr; 3308 pthread_t t; 3309 int res; 3310 res = pthread_attr_init(&attr); 3311 ASSERT_EQ(0, res); 3312 void *stack; 3313 const size_t kStackSize = std::max(kThreadStackMin, 32 * 1024); 3314 res = posix_memalign(&stack, 4096, kStackSize); 3315 ASSERT_EQ(0, res); 3316 res = pthread_attr_setstack(&attr, stack, kStackSize); 3317 ASSERT_EQ(0, res); 3318 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 3319 EXPECT_EQ(0, res); 3320 res = pthread_join(t, NULL); 3321 ASSERT_EQ(0, res); 3322 res = pthread_attr_destroy(&attr); 3323 ASSERT_EQ(0, res); 3324 } 3325 3326 TEST(MemorySanitizer, pthread_attr_get) { 3327 pthread_attr_t attr; 3328 int res; 3329 res = pthread_attr_init(&attr); 3330 ASSERT_EQ(0, res); 3331 { 3332 int v; 3333 res = pthread_attr_getdetachstate(&attr, &v); 3334 ASSERT_EQ(0, res); 3335 EXPECT_NOT_POISONED(v); 3336 } 3337 { 3338 size_t v; 3339 res = pthread_attr_getguardsize(&attr, &v); 3340 ASSERT_EQ(0, res); 3341 EXPECT_NOT_POISONED(v); 3342 } 3343 { 3344 struct sched_param v; 3345 res = pthread_attr_getschedparam(&attr, &v); 3346 ASSERT_EQ(0, res); 3347 EXPECT_NOT_POISONED(v); 3348 } 3349 { 3350 int v; 3351 res = pthread_attr_getschedpolicy(&attr, &v); 3352 ASSERT_EQ(0, res); 3353 EXPECT_NOT_POISONED(v); 3354 } 3355 { 3356 int v; 3357 res = pthread_attr_getinheritsched(&attr, &v); 3358 ASSERT_EQ(0, res); 3359 EXPECT_NOT_POISONED(v); 3360 } 3361 { 3362 int v; 3363 res = pthread_attr_getscope(&attr, &v); 3364 ASSERT_EQ(0, res); 3365 EXPECT_NOT_POISONED(v); 3366 } 3367 { 3368 size_t v; 3369 res = pthread_attr_getstacksize(&attr, &v); 3370 ASSERT_EQ(0, res); 3371 EXPECT_NOT_POISONED(v); 3372 } 3373 { 3374 void *v; 3375 size_t w; 3376 res = pthread_attr_getstack(&attr, &v, &w); 3377 ASSERT_EQ(0, res); 3378 EXPECT_NOT_POISONED(v); 3379 EXPECT_NOT_POISONED(w); 3380 } 3381 #ifdef __GLIBC__ 3382 { 3383 cpu_set_t v; 3384 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 3385 ASSERT_EQ(0, res); 3386 EXPECT_NOT_POISONED(v); 3387 } 3388 #endif 3389 res = pthread_attr_destroy(&attr); 3390 ASSERT_EQ(0, res); 3391 } 3392 3393 TEST(MemorySanitizer, pthread_getschedparam) { 3394 int policy; 3395 struct sched_param param; 3396 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 3397 ASSERT_EQ(0, res); 3398 EXPECT_NOT_POISONED(policy); 3399 EXPECT_NOT_POISONED(param.sched_priority); 3400 } 3401 3402 TEST(MemorySanitizer, pthread_key_create) { 3403 pthread_key_t key; 3404 int res = pthread_key_create(&key, NULL); 3405 ASSERT_EQ(0, res); 3406 EXPECT_NOT_POISONED(key); 3407 res = pthread_key_delete(key); 3408 ASSERT_EQ(0, res); 3409 } 3410 3411 namespace { 3412 struct SignalCondArg { 3413 pthread_cond_t* cond; 3414 pthread_mutex_t* mu; 3415 bool broadcast; 3416 }; 3417 3418 void *SignalCond(void *param) { 3419 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 3420 pthread_mutex_lock(arg->mu); 3421 if (arg->broadcast) 3422 pthread_cond_broadcast(arg->cond); 3423 else 3424 pthread_cond_signal(arg->cond); 3425 pthread_mutex_unlock(arg->mu); 3426 return 0; 3427 } 3428 } // namespace 3429 3430 TEST(MemorySanitizer, pthread_cond_wait) { 3431 pthread_cond_t cond; 3432 pthread_mutex_t mu; 3433 SignalCondArg args = {&cond, &mu, false}; 3434 pthread_cond_init(&cond, 0); 3435 pthread_mutex_init(&mu, 0); 3436 pthread_mutex_lock(&mu); 3437 3438 // signal 3439 pthread_t thr; 3440 pthread_create(&thr, 0, SignalCond, &args); 3441 int res = pthread_cond_wait(&cond, &mu); 3442 ASSERT_EQ(0, res); 3443 pthread_join(thr, 0); 3444 3445 // broadcast 3446 args.broadcast = true; 3447 pthread_create(&thr, 0, SignalCond, &args); 3448 res = pthread_cond_wait(&cond, &mu); 3449 ASSERT_EQ(0, res); 3450 pthread_join(thr, 0); 3451 3452 pthread_mutex_unlock(&mu); 3453 pthread_mutex_destroy(&mu); 3454 pthread_cond_destroy(&cond); 3455 } 3456 3457 TEST(MemorySanitizer, tmpnam) { 3458 char s[L_tmpnam]; 3459 char *res = tmpnam(s); 3460 ASSERT_EQ(s, res); 3461 EXPECT_NOT_POISONED(strlen(res)); 3462 } 3463 3464 TEST(MemorySanitizer, tempnam) { 3465 char *res = tempnam(NULL, "zzz"); 3466 EXPECT_NOT_POISONED(strlen(res)); 3467 free(res); 3468 } 3469 3470 TEST(MemorySanitizer, posix_memalign) { 3471 void *p; 3472 EXPECT_POISONED(p); 3473 int res = posix_memalign(&p, 4096, 13); 3474 ASSERT_EQ(0, res); 3475 EXPECT_NOT_POISONED(p); 3476 EXPECT_EQ(0U, (uintptr_t)p % 4096); 3477 free(p); 3478 } 3479 3480 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 3481 TEST(MemorySanitizer, memalign) { 3482 void *p = memalign(4096, 13); 3483 EXPECT_EQ(0U, (uintptr_t)p % 4096); 3484 free(p); 3485 } 3486 #endif 3487 3488 TEST(MemorySanitizer, valloc) { 3489 void *a = valloc(100); 3490 uintptr_t PageSize = GetPageSize(); 3491 EXPECT_EQ(0U, (uintptr_t)a % PageSize); 3492 free(a); 3493 } 3494 3495 #ifdef __GLIBC__ 3496 TEST(MemorySanitizer, pvalloc) { 3497 uintptr_t PageSize = GetPageSize(); 3498 void *p = pvalloc(PageSize + 100); 3499 EXPECT_EQ(0U, (uintptr_t)p % PageSize); 3500 EXPECT_EQ(2 * PageSize, __sanitizer_get_allocated_size(p)); 3501 free(p); 3502 3503 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 3504 EXPECT_EQ(0U, (uintptr_t)p % PageSize); 3505 EXPECT_EQ(PageSize, __sanitizer_get_allocated_size(p)); 3506 free(p); 3507 } 3508 #endif 3509 3510 TEST(MemorySanitizer, inet_pton) { 3511 const char *s = "1:0:0:0:0:0:0:8"; 3512 unsigned char buf[sizeof(struct in6_addr)]; 3513 int res = inet_pton(AF_INET6, s, buf); 3514 ASSERT_EQ(1, res); 3515 EXPECT_NOT_POISONED(buf[0]); 3516 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 3517 3518 char s_out[INET6_ADDRSTRLEN]; 3519 EXPECT_POISONED(s_out[3]); 3520 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 3521 ASSERT_NE((void*)0, q); 3522 EXPECT_NOT_POISONED(s_out[3]); 3523 } 3524 3525 TEST(MemorySanitizer, inet_aton) { 3526 const char *s = "127.0.0.1"; 3527 struct in_addr in[2]; 3528 int res = inet_aton(s, in); 3529 ASSERT_NE(0, res); 3530 EXPECT_NOT_POISONED(in[0]); 3531 EXPECT_POISONED(*(char *)(in + 1)); 3532 } 3533 3534 TEST(MemorySanitizer, uname) { 3535 struct utsname u; 3536 int res = uname(&u); 3537 ASSERT_EQ(0, res); 3538 EXPECT_NOT_POISONED(strlen(u.sysname)); 3539 EXPECT_NOT_POISONED(strlen(u.nodename)); 3540 EXPECT_NOT_POISONED(strlen(u.release)); 3541 EXPECT_NOT_POISONED(strlen(u.version)); 3542 EXPECT_NOT_POISONED(strlen(u.machine)); 3543 } 3544 3545 TEST(MemorySanitizer, gethostname) { 3546 char buf[1000]; 3547 EXPECT_EQ(-1, gethostname(buf, 1)); 3548 EXPECT_EQ(ENAMETOOLONG, errno); 3549 EXPECT_NOT_POISONED(buf[0]); 3550 EXPECT_POISONED(buf[1]); 3551 3552 __msan_poison(buf, sizeof(buf)); 3553 EXPECT_EQ(0, gethostname(buf, sizeof(buf))); 3554 EXPECT_NOT_POISONED(strlen(buf)); 3555 } 3556 3557 #if !defined(__FreeBSD__) && !defined(__NetBSD__) 3558 TEST(MemorySanitizer, sysinfo) { 3559 struct sysinfo info; 3560 int res = sysinfo(&info); 3561 ASSERT_EQ(0, res); 3562 EXPECT_NOT_POISONED(info); 3563 } 3564 #endif 3565 3566 TEST(MemorySanitizer, getpwuid) { 3567 struct passwd *p = getpwuid(0); // root 3568 ASSERT_TRUE(p != NULL); 3569 EXPECT_NOT_POISONED(p->pw_name); 3570 ASSERT_TRUE(p->pw_name != NULL); 3571 EXPECT_NOT_POISONED(p->pw_name[0]); 3572 EXPECT_NOT_POISONED(p->pw_uid); 3573 ASSERT_EQ(0U, p->pw_uid); 3574 } 3575 3576 TEST(MemorySanitizer, getpwuid_r) { 3577 struct passwd pwd; 3578 struct passwd *pwdres; 3579 char buf[10000]; 3580 int res = getpwuid_r(0, &pwd, buf, sizeof(buf), &pwdres); 3581 ASSERT_EQ(0, res); 3582 EXPECT_NOT_POISONED(pwd.pw_name); 3583 ASSERT_TRUE(pwd.pw_name != NULL); 3584 EXPECT_NOT_POISONED(pwd.pw_name[0]); 3585 EXPECT_NOT_POISONED(pwd.pw_uid); 3586 ASSERT_EQ(0U, pwd.pw_uid); 3587 EXPECT_NOT_POISONED(pwdres); 3588 } 3589 3590 TEST(MemorySanitizer, getpwnam_r) { 3591 struct passwd pwd; 3592 struct passwd *pwdres; 3593 char buf[10000]; 3594 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 3595 ASSERT_EQ(0, res); 3596 EXPECT_NOT_POISONED(pwd.pw_name); 3597 ASSERT_TRUE(pwd.pw_name != NULL); 3598 EXPECT_NOT_POISONED(pwd.pw_name[0]); 3599 EXPECT_NOT_POISONED(pwd.pw_uid); 3600 ASSERT_EQ(0U, pwd.pw_uid); 3601 EXPECT_NOT_POISONED(pwdres); 3602 } 3603 3604 TEST(MemorySanitizer, getpwnam_r_positive) { 3605 struct passwd pwd; 3606 struct passwd *pwdres; 3607 char s[5]; 3608 strncpy(s, "abcd", 5); 3609 __msan_poison(s, 5); 3610 char buf[10000]; 3611 EXPECT_UMR(getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 3612 } 3613 3614 TEST(MemorySanitizer, getgrnam_r) { 3615 struct group grp; 3616 struct group *grpres; 3617 char buf[10000]; 3618 int res = getgrnam_r(SUPERUSER_GROUP, &grp, buf, sizeof(buf), &grpres); 3619 ASSERT_EQ(0, res); 3620 // Note that getgrnam_r() returns 0 if the matching group is not found. 3621 ASSERT_NE(nullptr, grpres); 3622 EXPECT_NOT_POISONED(grp.gr_name); 3623 ASSERT_TRUE(grp.gr_name != NULL); 3624 EXPECT_NOT_POISONED(grp.gr_name[0]); 3625 EXPECT_NOT_POISONED(grp.gr_gid); 3626 EXPECT_NOT_POISONED(grpres); 3627 } 3628 3629 TEST(MemorySanitizer, getpwent) { 3630 setpwent(); 3631 struct passwd *p = getpwent(); 3632 ASSERT_TRUE(p != NULL); 3633 EXPECT_NOT_POISONED(p->pw_name); 3634 ASSERT_TRUE(p->pw_name != NULL); 3635 EXPECT_NOT_POISONED(p->pw_name[0]); 3636 EXPECT_NOT_POISONED(p->pw_uid); 3637 } 3638 3639 #ifndef MUSL 3640 TEST(MemorySanitizer, getpwent_r) { 3641 struct passwd pwd; 3642 struct passwd *pwdres; 3643 char buf[10000]; 3644 setpwent(); 3645 int res = getpwent_r(&pwd, buf, sizeof(buf), &pwdres); 3646 ASSERT_EQ(0, res); 3647 EXPECT_NOT_POISONED(pwd.pw_name); 3648 ASSERT_TRUE(pwd.pw_name != NULL); 3649 EXPECT_NOT_POISONED(pwd.pw_name[0]); 3650 EXPECT_NOT_POISONED(pwd.pw_uid); 3651 EXPECT_NOT_POISONED(pwdres); 3652 } 3653 #endif 3654 3655 #ifdef __GLIBC__ 3656 TEST(MemorySanitizer, fgetpwent) { 3657 FILE *fp = fopen("/etc/passwd", "r"); 3658 struct passwd *p = fgetpwent(fp); 3659 ASSERT_TRUE(p != NULL); 3660 EXPECT_NOT_POISONED(p->pw_name); 3661 ASSERT_TRUE(p->pw_name != NULL); 3662 EXPECT_NOT_POISONED(p->pw_name[0]); 3663 EXPECT_NOT_POISONED(p->pw_uid); 3664 fclose(fp); 3665 } 3666 #endif 3667 3668 TEST(MemorySanitizer, getgrent) { 3669 setgrent(); 3670 struct group *p = getgrent(); 3671 ASSERT_TRUE(p != NULL); 3672 EXPECT_NOT_POISONED(p->gr_name); 3673 ASSERT_TRUE(p->gr_name != NULL); 3674 EXPECT_NOT_POISONED(p->gr_name[0]); 3675 EXPECT_NOT_POISONED(p->gr_gid); 3676 } 3677 3678 #ifdef __GLIBC__ 3679 TEST(MemorySanitizer, fgetgrent) { 3680 FILE *fp = fopen("/etc/group", "r"); 3681 struct group *grp = fgetgrent(fp); 3682 ASSERT_TRUE(grp != NULL); 3683 EXPECT_NOT_POISONED(grp->gr_name); 3684 ASSERT_TRUE(grp->gr_name != NULL); 3685 EXPECT_NOT_POISONED(grp->gr_name[0]); 3686 EXPECT_NOT_POISONED(grp->gr_gid); 3687 for (char **p = grp->gr_mem; *p; ++p) { 3688 EXPECT_NOT_POISONED((*p)[0]); 3689 EXPECT_TRUE(strlen(*p) > 0); 3690 } 3691 fclose(fp); 3692 } 3693 #endif 3694 3695 #if defined(__GLIBC__) || defined(__FreeBSD__) 3696 TEST(MemorySanitizer, getgrent_r) { 3697 struct group grp; 3698 struct group *grpres; 3699 char buf[10000]; 3700 setgrent(); 3701 int res = getgrent_r(&grp, buf, sizeof(buf), &grpres); 3702 ASSERT_EQ(0, res); 3703 EXPECT_NOT_POISONED(grp.gr_name); 3704 ASSERT_TRUE(grp.gr_name != NULL); 3705 EXPECT_NOT_POISONED(grp.gr_name[0]); 3706 EXPECT_NOT_POISONED(grp.gr_gid); 3707 EXPECT_NOT_POISONED(grpres); 3708 } 3709 #endif 3710 3711 #ifdef __GLIBC__ 3712 TEST(MemorySanitizer, fgetgrent_r) { 3713 FILE *fp = fopen("/etc/group", "r"); 3714 struct group grp; 3715 struct group *grpres; 3716 char buf[10000]; 3717 setgrent(); 3718 int res = fgetgrent_r(fp, &grp, buf, sizeof(buf), &grpres); 3719 ASSERT_EQ(0, res); 3720 EXPECT_NOT_POISONED(grp.gr_name); 3721 ASSERT_TRUE(grp.gr_name != NULL); 3722 EXPECT_NOT_POISONED(grp.gr_name[0]); 3723 EXPECT_NOT_POISONED(grp.gr_gid); 3724 EXPECT_NOT_POISONED(grpres); 3725 fclose(fp); 3726 } 3727 #endif 3728 3729 TEST(MemorySanitizer, getgroups) { 3730 int n = getgroups(0, 0); 3731 gid_t *gids = new gid_t[n]; 3732 int res = getgroups(n, gids); 3733 ASSERT_EQ(n, res); 3734 for (int i = 0; i < n; ++i) 3735 EXPECT_NOT_POISONED(gids[i]); 3736 } 3737 3738 TEST(MemorySanitizer, getgroups_zero) { 3739 gid_t group; 3740 int n = getgroups(0, &group); 3741 ASSERT_GE(n, 0); 3742 } 3743 3744 TEST(MemorySanitizer, getgroups_negative) { 3745 gid_t group; 3746 int n = getgroups(-1, 0); 3747 ASSERT_EQ(-1, n); 3748 3749 n = getgroups(-1, 0); 3750 ASSERT_EQ(-1, n); 3751 } 3752 3753 TEST(MemorySanitizer, wordexp) { 3754 wordexp_t w; 3755 int res = wordexp("a b c", &w, 0); 3756 ASSERT_EQ(0, res); 3757 ASSERT_EQ(3U, w.we_wordc); 3758 ASSERT_STREQ("a", w.we_wordv[0]); 3759 ASSERT_STREQ("b", w.we_wordv[1]); 3760 ASSERT_STREQ("c", w.we_wordv[2]); 3761 } 3762 3763 template<class T> 3764 static bool applySlt(T value, T shadow) { 3765 __msan_partial_poison(&value, &shadow, sizeof(T)); 3766 volatile bool zzz = true; 3767 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 3768 // a shift-and-trunc to get at the highest bit. 3769 volatile bool v = value < 0 || zzz; 3770 return v; 3771 } 3772 3773 TEST(MemorySanitizer, SignedCompareWithZero) { 3774 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 3775 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 3776 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 3777 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 3778 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 3779 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 3780 } 3781 3782 template <class T, class S> 3783 static T poisoned(T Va, S Sa) { 3784 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 3785 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 3786 T a; 3787 a = Va; 3788 __msan_partial_poison(&a, &Sa, sizeof(T)); 3789 return a; 3790 } 3791 3792 TEST(MemorySanitizer, ICmpRelational) { 3793 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 3794 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 3795 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 3796 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 3797 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 3798 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 3799 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3800 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 3801 poisoned(-1, 0xFFFFFFFFU)); 3802 3803 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 3804 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 3805 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 3806 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 3807 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 3808 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 3809 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3810 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 3811 poisoned(-1, 0xFFFFFFFFU)); 3812 3813 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 3814 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 3815 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 3816 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 3817 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 3818 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 3819 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3820 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 3821 poisoned(-1, 0xFFFFFFFFU)); 3822 3823 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 3824 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 3825 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 3826 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 3827 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 3828 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 3829 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3830 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 3831 poisoned(-1, 0xFFFFFFFFU)); 3832 3833 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 3834 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 3835 // Note that "icmp op X, Y" is approximated with "or shadow(X), shadow(Y)" 3836 // and therefore may generate false positives in some cases, e.g. the 3837 // following one: 3838 // EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 3839 } 3840 3841 #if MSAN_HAS_M128 3842 TEST(MemorySanitizer, ICmpVectorRelational) { 3843 EXPECT_NOT_POISONED( 3844 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 3845 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 3846 EXPECT_NOT_POISONED( 3847 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 3848 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 3849 EXPECT_POISONED( 3850 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 3851 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 3852 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 3853 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 3854 } 3855 3856 TEST(MemorySanitizer, stmxcsr_ldmxcsr) { 3857 U4 x = _mm_getcsr(); 3858 EXPECT_NOT_POISONED(x); 3859 3860 _mm_setcsr(x); 3861 3862 __msan_poison(&x, sizeof(x)); 3863 U4 origin = __LINE__; 3864 __msan_set_origin(&x, sizeof(x), origin); 3865 EXPECT_UMR_O(_mm_setcsr(x), origin); 3866 } 3867 #endif 3868 3869 // Volatile bitfield store is implemented as load-mask-store 3870 // Test that we don't warn on the store of (uninitialized) padding. 3871 struct VolatileBitfieldStruct { 3872 volatile unsigned x : 1; 3873 unsigned y : 1; 3874 }; 3875 3876 TEST(MemorySanitizer, VolatileBitfield) { 3877 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 3878 S->x = 1; 3879 EXPECT_NOT_POISONED((unsigned)S->x); 3880 EXPECT_POISONED((unsigned)S->y); 3881 } 3882 3883 TEST(MemorySanitizer, UnalignedLoad) { 3884 char x[32] __attribute__((aligned(8))); 3885 U4 origin = __LINE__; 3886 for (unsigned i = 0; i < sizeof(x) / 4; ++i) 3887 __msan_set_origin(x + 4 * i, 4, origin + i); 3888 3889 memset(x + 8, 0, 16); 3890 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 6), origin + 1); 3891 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 7), origin + 1); 3892 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 8)); 3893 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 9)); 3894 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 22)); 3895 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 23), origin + 6); 3896 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 24), origin + 6); 3897 3898 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 4), origin + 1); 3899 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 7), origin + 1); 3900 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 8)); 3901 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 9)); 3902 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 20)); 3903 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 21), origin + 6); 3904 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 24), origin + 6); 3905 3906 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x), origin); 3907 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 1), origin); 3908 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 7), origin + 1); 3909 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 8)); 3910 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 9)); 3911 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 16)); 3912 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 17), origin + 6); 3913 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 21), origin + 6); 3914 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 24), origin + 6); 3915 } 3916 3917 TEST(MemorySanitizer, UnalignedStore16) { 3918 char x[5] __attribute__((aligned(4))); 3919 U2 y2 = 0; 3920 U4 origin = __LINE__; 3921 __msan_poison(&y2, 1); 3922 __msan_set_origin(&y2, 1, origin); 3923 3924 __sanitizer_unaligned_store16(x + 1, y2); 3925 EXPECT_POISONED_O(x[0], origin); 3926 EXPECT_POISONED_O(x[1], origin); 3927 EXPECT_NOT_POISONED(x[2]); 3928 EXPECT_POISONED_O(x[3], origin); 3929 } 3930 3931 TEST(MemorySanitizer, UnalignedStore32) { 3932 char x[8] __attribute__((aligned(4))); 3933 U4 y4 = 0; 3934 U4 origin = __LINE__; 3935 __msan_poison(&y4, 2); 3936 __msan_set_origin(&y4, 2, origin); 3937 3938 __sanitizer_unaligned_store32(x + 3, y4); 3939 EXPECT_POISONED_O(x[0], origin); 3940 EXPECT_POISONED_O(x[1], origin); 3941 EXPECT_POISONED_O(x[2], origin); 3942 EXPECT_POISONED_O(x[3], origin); 3943 EXPECT_POISONED_O(x[4], origin); 3944 EXPECT_NOT_POISONED(x[5]); 3945 EXPECT_NOT_POISONED(x[6]); 3946 EXPECT_POISONED_O(x[7], origin); 3947 } 3948 3949 TEST(MemorySanitizer, UnalignedStore64) { 3950 char x[16] __attribute__((aligned(8))); 3951 U8 y8 = 0; 3952 U4 origin = __LINE__; 3953 __msan_poison(&y8, 3); 3954 __msan_poison(((char *)&y8) + sizeof(y8) - 2, 1); 3955 __msan_set_origin(&y8, 8, origin); 3956 3957 __sanitizer_unaligned_store64(x + 3, y8); 3958 EXPECT_POISONED_O(x[0], origin); 3959 EXPECT_POISONED_O(x[1], origin); 3960 EXPECT_POISONED_O(x[2], origin); 3961 EXPECT_POISONED_O(x[3], origin); 3962 EXPECT_POISONED_O(x[4], origin); 3963 EXPECT_POISONED_O(x[5], origin); 3964 EXPECT_NOT_POISONED(x[6]); 3965 EXPECT_NOT_POISONED(x[7]); 3966 EXPECT_NOT_POISONED(x[8]); 3967 EXPECT_POISONED_O(x[9], origin); 3968 EXPECT_NOT_POISONED(x[10]); 3969 EXPECT_POISONED_O(x[11], origin); 3970 } 3971 3972 TEST(MemorySanitizer, UnalignedStore16_precise) { 3973 char x[8] __attribute__((aligned(4))); 3974 U2 y = 0; 3975 U4 originx1 = __LINE__; 3976 U4 originx2 = __LINE__; 3977 U4 originy = __LINE__; 3978 __msan_poison(x, sizeof(x)); 3979 __msan_set_origin(x, 4, originx1); 3980 __msan_set_origin(x + 4, 4, originx2); 3981 __msan_poison(((char *)&y) + 1, 1); 3982 __msan_set_origin(&y, sizeof(y), originy); 3983 3984 __sanitizer_unaligned_store16(x + 3, y); 3985 EXPECT_POISONED_O(x[0], originx1); 3986 EXPECT_POISONED_O(x[1], originx1); 3987 EXPECT_POISONED_O(x[2], originx1); 3988 EXPECT_NOT_POISONED(x[3]); 3989 EXPECT_POISONED_O(x[4], originy); 3990 EXPECT_POISONED_O(x[5], originy); 3991 EXPECT_POISONED_O(x[6], originy); 3992 EXPECT_POISONED_O(x[7], originy); 3993 } 3994 3995 TEST(MemorySanitizer, UnalignedStore16_precise2) { 3996 char x[8] __attribute__((aligned(4))); 3997 U2 y = 0; 3998 U4 originx1 = __LINE__; 3999 U4 originx2 = __LINE__; 4000 U4 originy = __LINE__; 4001 __msan_poison(x, sizeof(x)); 4002 __msan_set_origin(x, 4, originx1); 4003 __msan_set_origin(x + 4, 4, originx2); 4004 __msan_poison(((char *)&y), 1); 4005 __msan_set_origin(&y, sizeof(y), originy); 4006 4007 __sanitizer_unaligned_store16(x + 3, y); 4008 EXPECT_POISONED_O(x[0], originy); 4009 EXPECT_POISONED_O(x[1], originy); 4010 EXPECT_POISONED_O(x[2], originy); 4011 EXPECT_POISONED_O(x[3], originy); 4012 EXPECT_NOT_POISONED(x[4]); 4013 EXPECT_POISONED_O(x[5], originx2); 4014 EXPECT_POISONED_O(x[6], originx2); 4015 EXPECT_POISONED_O(x[7], originx2); 4016 } 4017 4018 TEST(MemorySanitizer, UnalignedStore64_precise) { 4019 char x[12] __attribute__((aligned(8))); 4020 U8 y = 0; 4021 U4 originx1 = __LINE__; 4022 U4 originx2 = __LINE__; 4023 U4 originx3 = __LINE__; 4024 U4 originy = __LINE__; 4025 __msan_poison(x, sizeof(x)); 4026 __msan_set_origin(x, 4, originx1); 4027 __msan_set_origin(x + 4, 4, originx2); 4028 __msan_set_origin(x + 8, 4, originx3); 4029 __msan_poison(((char *)&y) + 1, 1); 4030 __msan_poison(((char *)&y) + 7, 1); 4031 __msan_set_origin(&y, sizeof(y), originy); 4032 4033 __sanitizer_unaligned_store64(x + 2, y); 4034 EXPECT_POISONED_O(x[0], originy); 4035 EXPECT_POISONED_O(x[1], originy); 4036 EXPECT_NOT_POISONED(x[2]); 4037 EXPECT_POISONED_O(x[3], originy); 4038 4039 EXPECT_NOT_POISONED(x[4]); 4040 EXPECT_NOT_POISONED(x[5]); 4041 EXPECT_NOT_POISONED(x[6]); 4042 EXPECT_NOT_POISONED(x[7]); 4043 4044 EXPECT_NOT_POISONED(x[8]); 4045 EXPECT_POISONED_O(x[9], originy); 4046 EXPECT_POISONED_O(x[10], originy); 4047 EXPECT_POISONED_O(x[11], originy); 4048 } 4049 4050 TEST(MemorySanitizer, UnalignedStore64_precise2) { 4051 char x[12] __attribute__((aligned(8))); 4052 U8 y = 0; 4053 U4 originx1 = __LINE__; 4054 U4 originx2 = __LINE__; 4055 U4 originx3 = __LINE__; 4056 U4 originy = __LINE__; 4057 __msan_poison(x, sizeof(x)); 4058 __msan_set_origin(x, 4, originx1); 4059 __msan_set_origin(x + 4, 4, originx2); 4060 __msan_set_origin(x + 8, 4, originx3); 4061 __msan_poison(((char *)&y) + 3, 3); 4062 __msan_set_origin(&y, sizeof(y), originy); 4063 4064 __sanitizer_unaligned_store64(x + 2, y); 4065 EXPECT_POISONED_O(x[0], originx1); 4066 EXPECT_POISONED_O(x[1], originx1); 4067 EXPECT_NOT_POISONED(x[2]); 4068 EXPECT_NOT_POISONED(x[3]); 4069 4070 EXPECT_NOT_POISONED(x[4]); 4071 EXPECT_POISONED_O(x[5], originy); 4072 EXPECT_POISONED_O(x[6], originy); 4073 EXPECT_POISONED_O(x[7], originy); 4074 4075 EXPECT_NOT_POISONED(x[8]); 4076 EXPECT_NOT_POISONED(x[9]); 4077 EXPECT_POISONED_O(x[10], originx3); 4078 EXPECT_POISONED_O(x[11], originx3); 4079 } 4080 4081 #if (defined(__x86_64__) && defined(__clang__)) 4082 namespace { 4083 typedef U1 V16x8 __attribute__((__vector_size__(16))); 4084 typedef U2 V8x16 __attribute__((__vector_size__(16))); 4085 typedef U4 V4x32 __attribute__((__vector_size__(16))); 4086 typedef U8 V2x64 __attribute__((__vector_size__(16))); 4087 typedef U4 V8x32 __attribute__((__vector_size__(32))); 4088 typedef U8 V4x64 __attribute__((__vector_size__(32))); 4089 typedef U4 V2x32 __attribute__((__vector_size__(8))); 4090 typedef U2 V4x16 __attribute__((__vector_size__(8))); 4091 typedef U1 V8x8 __attribute__((__vector_size__(8))); 4092 4093 V8x16 shift_sse2_left_scalar(V8x16 x, U4 y) { 4094 return _mm_slli_epi16(x, y); 4095 } 4096 4097 V8x16 shift_sse2_left(V8x16 x, V8x16 y) { 4098 return _mm_sll_epi16(x, y); 4099 } 4100 4101 TEST(VectorShiftTest, sse2_left_scalar) { 4102 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; 4103 V8x16 u = shift_sse2_left_scalar(v, 2); 4104 EXPECT_POISONED(u[0]); 4105 EXPECT_POISONED(u[1]); 4106 EXPECT_NOT_POISONED(u[0] | (3U << 2)); 4107 EXPECT_NOT_POISONED(u[1] | (7U << 2)); 4108 u[0] = u[1] = 0; 4109 EXPECT_NOT_POISONED(u); 4110 } 4111 4112 TEST(VectorShiftTest, sse2_left_scalar_by_uninit) { 4113 V8x16 v = {0, 1, 2, 3, 4, 5, 6, 7}; 4114 V8x16 u = shift_sse2_left_scalar(v, Poisoned<U4>()); 4115 EXPECT_POISONED(u[0]); 4116 EXPECT_POISONED(u[1]); 4117 EXPECT_POISONED(u[2]); 4118 EXPECT_POISONED(u[3]); 4119 EXPECT_POISONED(u[4]); 4120 EXPECT_POISONED(u[5]); 4121 EXPECT_POISONED(u[6]); 4122 EXPECT_POISONED(u[7]); 4123 } 4124 4125 TEST(VectorShiftTest, sse2_left) { 4126 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; 4127 // Top 64 bits of shift count don't affect the result. 4128 V2x64 s = {2, Poisoned<U8>()}; 4129 V8x16 u = shift_sse2_left(v, s); 4130 EXPECT_POISONED(u[0]); 4131 EXPECT_POISONED(u[1]); 4132 EXPECT_NOT_POISONED(u[0] | (3U << 2)); 4133 EXPECT_NOT_POISONED(u[1] | (7U << 2)); 4134 u[0] = u[1] = 0; 4135 EXPECT_NOT_POISONED(u); 4136 } 4137 4138 TEST(VectorShiftTest, sse2_left_by_uninit) { 4139 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; 4140 V2x64 s = {Poisoned<U8>(), Poisoned<U8>()}; 4141 V8x16 u = shift_sse2_left(v, s); 4142 EXPECT_POISONED(u[0]); 4143 EXPECT_POISONED(u[1]); 4144 EXPECT_POISONED(u[2]); 4145 EXPECT_POISONED(u[3]); 4146 EXPECT_POISONED(u[4]); 4147 EXPECT_POISONED(u[5]); 4148 EXPECT_POISONED(u[6]); 4149 EXPECT_POISONED(u[7]); 4150 } 4151 4152 #ifdef __AVX2__ 4153 V4x32 shift_avx2_left(V4x32 x, V4x32 y) { 4154 return _mm_sllv_epi32(x, y); 4155 } 4156 // This is variable vector shift that's only available starting with AVX2. 4157 // V4x32 shift_avx2_left(V4x32 x, V4x32 y) { 4158 TEST(VectorShiftTest, avx2_left) { 4159 V4x32 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3}; 4160 V4x32 s = {2, Poisoned<U4>(), 3, Poisoned<U4>()}; 4161 V4x32 u = shift_avx2_left(v, s); 4162 EXPECT_POISONED(u[0]); 4163 EXPECT_NOT_POISONED(u[0] | (~7U)); 4164 EXPECT_POISONED(u[1]); 4165 EXPECT_POISONED(u[1] | (~31U)); 4166 EXPECT_NOT_POISONED(u[2]); 4167 EXPECT_POISONED(u[3]); 4168 EXPECT_POISONED(u[3] | (~31U)); 4169 } 4170 #endif // __AVX2__ 4171 } // namespace 4172 4173 TEST(VectorPackTest, sse2_packssdw_128) { 4174 const unsigned S2_max = (1 << 15) - 1; 4175 V4x32 a = {Poisoned<U4>(0, 0xFF0000), Poisoned<U4>(0, 0xFFFF0000), 4176 S2_max + 100, 4}; 4177 V4x32 b = {Poisoned<U4>(0, 0xFF), S2_max + 10000, Poisoned<U4>(0, 0xFF00), 4178 S2_max}; 4179 4180 V8x16 c = _mm_packs_epi32(a, b); 4181 4182 EXPECT_POISONED(c[0]); 4183 EXPECT_POISONED(c[1]); 4184 EXPECT_NOT_POISONED(c[2]); 4185 EXPECT_NOT_POISONED(c[3]); 4186 EXPECT_POISONED(c[4]); 4187 EXPECT_NOT_POISONED(c[5]); 4188 EXPECT_POISONED(c[6]); 4189 EXPECT_NOT_POISONED(c[7]); 4190 4191 EXPECT_EQ(c[2], S2_max); 4192 EXPECT_EQ(c[3], 4); 4193 EXPECT_EQ(c[5], S2_max); 4194 EXPECT_EQ(c[7], S2_max); 4195 } 4196 4197 TEST(VectorPackTest, mmx_packuswb) { 4198 const unsigned U1_max = (1 << 8) - 1; 4199 V4x16 a = {Poisoned<U2>(0, 0xFF00), Poisoned<U2>(0, 0xF000U), U1_max + 100, 4200 4}; 4201 V4x16 b = {Poisoned<U2>(0, 0xFF), U1_max - 1, Poisoned<U2>(0, 0xF), U1_max}; 4202 V8x8 c = _mm_packs_pu16(a, b); 4203 4204 EXPECT_POISONED(c[0]); 4205 EXPECT_POISONED(c[1]); 4206 EXPECT_NOT_POISONED(c[2]); 4207 EXPECT_NOT_POISONED(c[3]); 4208 EXPECT_POISONED(c[4]); 4209 EXPECT_NOT_POISONED(c[5]); 4210 EXPECT_POISONED(c[6]); 4211 EXPECT_NOT_POISONED(c[7]); 4212 4213 EXPECT_EQ(c[2], U1_max); 4214 EXPECT_EQ(c[3], 4); 4215 EXPECT_EQ(c[5], U1_max - 1); 4216 EXPECT_EQ(c[7], U1_max); 4217 } 4218 4219 TEST(VectorSadTest, sse2_psad_bw) { 4220 V16x8 a = {Poisoned<U1>(), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; 4221 V16x8 b = {100, 101, 102, 103, 104, 105, 106, 107, 4222 108, 109, 110, 111, 112, 113, 114, 115}; 4223 V2x64 c = _mm_sad_epu8(a, b); 4224 4225 EXPECT_POISONED(c[0]); 4226 EXPECT_NOT_POISONED(c[1]); 4227 4228 EXPECT_EQ(800U, c[1]); 4229 } 4230 4231 TEST(VectorMaddTest, mmx_pmadd_wd) { 4232 V4x16 a = {Poisoned<U2>(), 1, 2, 3}; 4233 V4x16 b = {100, 101, 102, 103}; 4234 V2x32 c = _mm_madd_pi16(a, b); 4235 4236 EXPECT_POISONED(c[0]); 4237 EXPECT_NOT_POISONED(c[1]); 4238 4239 EXPECT_EQ((unsigned)(2 * 102 + 3 * 103), c[1]); 4240 } 4241 4242 TEST(VectorCmpTest, mm_cmpneq_ps) { 4243 V4x32 c; 4244 c = _mm_cmpneq_ps(V4x32{Poisoned<U4>(), 1, 2, 3}, V4x32{4, 5, Poisoned<U4>(), 6}); 4245 EXPECT_POISONED(c[0]); 4246 EXPECT_NOT_POISONED(c[1]); 4247 EXPECT_POISONED(c[2]); 4248 EXPECT_NOT_POISONED(c[3]); 4249 4250 c = _mm_cmpneq_ps(V4x32{0, 1, 2, 3}, V4x32{4, 5, 6, 7}); 4251 EXPECT_NOT_POISONED(c); 4252 } 4253 4254 TEST(VectorCmpTest, mm_cmpneq_sd) { 4255 V2x64 c; 4256 c = _mm_cmpneq_sd(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3}); 4257 EXPECT_POISONED(c[0]); 4258 c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3}); 4259 EXPECT_POISONED(c[0]); 4260 c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{3, 4}); 4261 EXPECT_NOT_POISONED(c[0]); 4262 c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()}); 4263 EXPECT_NOT_POISONED(c[0]); 4264 c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()}); 4265 EXPECT_NOT_POISONED(c[0]); 4266 } 4267 4268 TEST(VectorCmpTest, builtin_ia32_ucomisdlt) { 4269 U4 c; 4270 c = __builtin_ia32_ucomisdlt(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3}); 4271 EXPECT_POISONED(c); 4272 c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3}); 4273 EXPECT_POISONED(c); 4274 c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{3, 4}); 4275 EXPECT_NOT_POISONED(c); 4276 c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()}); 4277 EXPECT_NOT_POISONED(c); 4278 c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()}); 4279 EXPECT_NOT_POISONED(c); 4280 } 4281 4282 #endif // defined(__x86_64__) && defined(__clang__) 4283 4284 TEST(MemorySanitizerOrigins, SetGet) { 4285 EXPECT_EQ(TrackingOrigins(), !!__msan_get_track_origins()); 4286 if (!TrackingOrigins()) return; 4287 int x; 4288 __msan_set_origin(&x, sizeof(x), 1234); 4289 EXPECT_ORIGIN(1234U, __msan_get_origin(&x)); 4290 __msan_set_origin(&x, sizeof(x), 5678); 4291 EXPECT_ORIGIN(5678U, __msan_get_origin(&x)); 4292 __msan_set_origin(&x, sizeof(x), 0); 4293 EXPECT_ORIGIN(0U, __msan_get_origin(&x)); 4294 } 4295 4296 namespace { 4297 struct S { 4298 U4 dummy; 4299 U2 a; 4300 U2 b; 4301 }; 4302 4303 TEST(MemorySanitizerOrigins, InitializedStoreDoesNotChangeOrigin) { 4304 if (!TrackingOrigins()) return; 4305 4306 S s; 4307 U4 origin = rand(); 4308 s.a = *GetPoisonedO<U2>(0, origin); 4309 EXPECT_ORIGIN(origin, __msan_get_origin(&s.a)); 4310 EXPECT_ORIGIN(origin, __msan_get_origin(&s.b)); 4311 4312 s.b = 42; 4313 EXPECT_ORIGIN(origin, __msan_get_origin(&s.a)); 4314 EXPECT_ORIGIN(origin, __msan_get_origin(&s.b)); 4315 } 4316 } // namespace 4317 4318 template<class T, class BinaryOp> 4319 ALWAYS_INLINE 4320 void BinaryOpOriginTest(BinaryOp op) { 4321 U4 ox = rand(); //NOLINT 4322 U4 oy = rand(); //NOLINT 4323 T *x = GetPoisonedO<T>(0, ox, 0); 4324 T *y = GetPoisonedO<T>(1, oy, 0); 4325 T *z = GetPoisonedO<T>(2, 0, 0); 4326 4327 *z = op(*x, *y); 4328 U4 origin = __msan_get_origin(z); 4329 EXPECT_POISONED_O(*z, origin); 4330 EXPECT_EQ(true, __msan_origin_is_descendant_or_same(origin, ox) || 4331 __msan_origin_is_descendant_or_same(origin, oy)); 4332 4333 // y is poisoned, x is not. 4334 *x = 10101; 4335 *y = *GetPoisonedO<T>(1, oy); 4336 break_optimization(x); 4337 __msan_set_origin(z, sizeof(*z), 0); 4338 *z = op(*x, *y); 4339 EXPECT_POISONED_O(*z, oy); 4340 EXPECT_ORIGIN(oy, __msan_get_origin(z)); 4341 4342 // x is poisoned, y is not. 4343 *x = *GetPoisonedO<T>(0, ox); 4344 *y = 10101010; 4345 break_optimization(y); 4346 __msan_set_origin(z, sizeof(*z), 0); 4347 *z = op(*x, *y); 4348 EXPECT_POISONED_O(*z, ox); 4349 EXPECT_ORIGIN(ox, __msan_get_origin(z)); 4350 } 4351 4352 template<class T> ALWAYS_INLINE T XOR(const T &a, const T&b) { return a ^ b; } 4353 template<class T> ALWAYS_INLINE T ADD(const T &a, const T&b) { return a + b; } 4354 template<class T> ALWAYS_INLINE T SUB(const T &a, const T&b) { return a - b; } 4355 template<class T> ALWAYS_INLINE T MUL(const T &a, const T&b) { return a * b; } 4356 template<class T> ALWAYS_INLINE T AND(const T &a, const T&b) { return a & b; } 4357 template<class T> ALWAYS_INLINE T OR (const T &a, const T&b) { return a | b; } 4358 4359 TEST(MemorySanitizerOrigins, BinaryOp) { 4360 if (!TrackingOrigins()) return; 4361 BinaryOpOriginTest<S8>(XOR<S8>); 4362 BinaryOpOriginTest<U8>(ADD<U8>); 4363 BinaryOpOriginTest<S4>(SUB<S4>); 4364 BinaryOpOriginTest<S4>(MUL<S4>); 4365 BinaryOpOriginTest<U4>(OR<U4>); 4366 BinaryOpOriginTest<U4>(AND<U4>); 4367 BinaryOpOriginTest<double>(ADD<U4>); 4368 BinaryOpOriginTest<float>(ADD<S4>); 4369 BinaryOpOriginTest<double>(ADD<double>); 4370 BinaryOpOriginTest<float>(ADD<double>); 4371 } 4372 4373 TEST(MemorySanitizerOrigins, Unary) { 4374 if (!TrackingOrigins()) return; 4375 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4376 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4377 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4378 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4379 4380 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4381 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4382 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4383 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4384 4385 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4386 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4387 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4388 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 4389 4390 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4391 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4392 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4393 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4394 4395 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 4396 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 4397 } 4398 4399 TEST(MemorySanitizerOrigins, EQ) { 4400 if (!TrackingOrigins()) return; 4401 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 4402 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 4403 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 4404 } 4405 4406 TEST(MemorySanitizerOrigins, DIV) { 4407 if (!TrackingOrigins()) return; 4408 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 4409 unsigned o = __LINE__; 4410 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 4411 } 4412 4413 TEST(MemorySanitizerOrigins, SHIFT) { 4414 if (!TrackingOrigins()) return; 4415 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 4416 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 4417 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 4418 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 4419 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 4420 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 4421 } 4422 4423 template<class T, int N> 4424 void MemCpyTest() { 4425 int ox = __LINE__; 4426 T *x = new T[N]; 4427 T *y = new T[N]; 4428 T *z = new T[N]; 4429 T *q = new T[N]; 4430 __msan_poison(x, N * sizeof(T)); 4431 __msan_set_origin(x, N * sizeof(T), ox); 4432 __msan_set_origin(y, N * sizeof(T), 777777); 4433 __msan_set_origin(z, N * sizeof(T), 888888); 4434 EXPECT_NOT_POISONED(x); 4435 memcpy(y, x, N * sizeof(T)); 4436 EXPECT_POISONED_O(y[0], ox); 4437 EXPECT_POISONED_O(y[N/2], ox); 4438 EXPECT_POISONED_O(y[N-1], ox); 4439 EXPECT_NOT_POISONED(x); 4440 #if !defined(__NetBSD__) 4441 void *res = mempcpy(q, x, N * sizeof(T)); 4442 ASSERT_EQ(q + N, res); 4443 EXPECT_POISONED_O(q[0], ox); 4444 EXPECT_POISONED_O(q[N/2], ox); 4445 EXPECT_POISONED_O(q[N-1], ox); 4446 EXPECT_NOT_POISONED(x); 4447 #endif 4448 memmove(z, x, N * sizeof(T)); 4449 EXPECT_POISONED_O(z[0], ox); 4450 EXPECT_POISONED_O(z[N/2], ox); 4451 EXPECT_POISONED_O(z[N-1], ox); 4452 } 4453 4454 TEST(MemorySanitizerOrigins, LargeMemCpy) { 4455 if (!TrackingOrigins()) return; 4456 MemCpyTest<U1, 10000>(); 4457 MemCpyTest<U8, 10000>(); 4458 } 4459 4460 TEST(MemorySanitizerOrigins, SmallMemCpy) { 4461 if (!TrackingOrigins()) return; 4462 MemCpyTest<U8, 1>(); 4463 MemCpyTest<U8, 2>(); 4464 MemCpyTest<U8, 3>(); 4465 } 4466 4467 TEST(MemorySanitizerOrigins, Select) { 4468 if (!TrackingOrigins()) return; 4469 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 4470 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 4471 S4 x; 4472 break_optimization(&x); 4473 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 4474 4475 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 4476 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 4477 } 4478 4479 NOINLINE int RetvalOriginTest(U4 origin) { 4480 int *a = new int; 4481 break_optimization(a); 4482 __msan_set_origin(a, sizeof(*a), origin); 4483 int res = *a; 4484 delete a; 4485 return res; 4486 } 4487 4488 TEST(MemorySanitizerOrigins, Retval) { 4489 if (!TrackingOrigins()) return; 4490 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 4491 } 4492 4493 NOINLINE void ParamOriginTest(int param, U4 origin) { 4494 EXPECT_POISONED_O(param, origin); 4495 } 4496 4497 TEST(MemorySanitizerOrigins, Param) { 4498 if (!TrackingOrigins()) return; 4499 int *a = new int; 4500 U4 origin = __LINE__; 4501 break_optimization(a); 4502 __msan_set_origin(a, sizeof(*a), origin); 4503 ParamOriginTest(*a, origin); 4504 delete a; 4505 } 4506 4507 TEST(MemorySanitizerOrigins, Invoke) { 4508 if (!TrackingOrigins()) return; 4509 StructWithDtor s; // Will cause the calls to become invokes. 4510 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 4511 } 4512 4513 TEST(MemorySanitizerOrigins, strlen) { 4514 S8 alignment; 4515 break_optimization(&alignment); 4516 char x[4] = {'a', 'b', 0, 0}; 4517 __msan_poison(&x[2], 1); 4518 U4 origin = __LINE__; 4519 __msan_set_origin(x, sizeof(x), origin); 4520 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 4521 } 4522 4523 TEST(MemorySanitizerOrigins, wcslen) { 4524 wchar_t w[3] = {'a', 'b', 0}; 4525 U4 origin = __LINE__; 4526 __msan_set_origin(w, sizeof(w), origin); 4527 __msan_poison(&w[2], sizeof(wchar_t)); 4528 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 4529 } 4530 4531 #if MSAN_HAS_M128 4532 TEST(MemorySanitizerOrigins, StoreIntrinsic) { 4533 __m128 x, y; 4534 U4 origin = __LINE__; 4535 __msan_set_origin(&x, sizeof(x), origin); 4536 __msan_poison(&x, sizeof(x)); 4537 _mm_storeu_ps((float*)&y, x); 4538 EXPECT_POISONED_O(y, origin); 4539 } 4540 #endif 4541 4542 NOINLINE void RecursiveMalloc(int depth) { 4543 static int count; 4544 count++; 4545 if ((count % (1024 * 1024)) == 0) 4546 printf("RecursiveMalloc: %d\n", count); 4547 int *x1 = new int; 4548 int *x2 = new int; 4549 break_optimization(x1); 4550 break_optimization(x2); 4551 if (depth > 0) { 4552 RecursiveMalloc(depth-1); 4553 RecursiveMalloc(depth-1); 4554 } 4555 delete x1; 4556 delete x2; 4557 } 4558 4559 TEST(MemorySanitizer, Select) { 4560 int x; 4561 int volatile* p = &x; 4562 int z = *p ? 1 : 0; 4563 EXPECT_POISONED(z); 4564 } 4565 4566 TEST(MemorySanitizer, SelectPartial) { 4567 // Precise instrumentation of select. 4568 // Some bits of the result do not depend on select condition, and must stay 4569 // initialized even if select condition is not. These are the bits that are 4570 // equal and initialized in both left and right select arguments. 4571 U4 x = 0xFFFFABCDU; 4572 U4 x_s = 0xFFFF0000U; 4573 __msan_partial_poison(&x, &x_s, sizeof(x)); 4574 U4 y = 0xAB00U; 4575 U1 cond = true; 4576 __msan_poison(&cond, sizeof(cond)); 4577 U4 z = cond ? x : y; 4578 __msan_print_shadow(&z, sizeof(z)); 4579 EXPECT_POISONED(z & 0xFFU); 4580 EXPECT_NOT_POISONED(z & 0xFF00U); 4581 EXPECT_POISONED(z & 0xFF0000U); 4582 EXPECT_POISONED(z & 0xFF000000U); 4583 EXPECT_EQ(0xAB00U, z & 0xFF00U); 4584 } 4585 4586 TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 4587 RecursiveMalloc(22); 4588 } 4589 4590 TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 4591 size_t sizes[] = {0, 20, 5000, 1<<20}; 4592 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 4593 size_t alloc_size = __sanitizer_get_estimated_allocated_size(sizes[i]); 4594 EXPECT_EQ(alloc_size, sizes[i]); 4595 } 4596 } 4597 4598 TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 4599 char *array = reinterpret_cast<char*>(malloc(100)); 4600 int *int_ptr = new int; 4601 4602 EXPECT_TRUE(__sanitizer_get_ownership(array)); 4603 EXPECT_EQ(100U, __sanitizer_get_allocated_size(array)); 4604 4605 EXPECT_TRUE(__sanitizer_get_ownership(int_ptr)); 4606 EXPECT_EQ(sizeof(*int_ptr), __sanitizer_get_allocated_size(int_ptr)); 4607 4608 void *wild_addr = reinterpret_cast<void*>(0x1); 4609 EXPECT_FALSE(__sanitizer_get_ownership(wild_addr)); 4610 EXPECT_EQ(0U, __sanitizer_get_allocated_size(wild_addr)); 4611 4612 EXPECT_FALSE(__sanitizer_get_ownership(array + 50)); 4613 EXPECT_EQ(0U, __sanitizer_get_allocated_size(array + 50)); 4614 4615 // NULL is a valid argument for GetAllocatedSize but is not owned. 4616 EXPECT_FALSE(__sanitizer_get_ownership(NULL)); 4617 EXPECT_EQ(0U, __sanitizer_get_allocated_size(NULL)); 4618 4619 free(array); 4620 EXPECT_FALSE(__sanitizer_get_ownership(array)); 4621 EXPECT_EQ(0U, __sanitizer_get_allocated_size(array)); 4622 4623 delete int_ptr; 4624 } 4625 4626 TEST(MemorySanitizer, MlockTest) { 4627 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 4628 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 4629 EXPECT_EQ(0, munlockall()); 4630 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 4631 } 4632 4633 // Test that LargeAllocator unpoisons memory before releasing it to the OS. 4634 TEST(MemorySanitizer, LargeAllocatorUnpoisonsOnFree) { 4635 void *p = malloc(1024 * 1024); 4636 free(p); 4637 4638 typedef void *(*mmap_fn)(void *, size_t, int, int, int, off_t); 4639 mmap_fn real_mmap = (mmap_fn)dlsym(RTLD_NEXT, "mmap"); 4640 4641 // Allocate the page that was released to the OS in free() with the real mmap, 4642 // bypassing the interceptor. 4643 char *q = (char *)real_mmap(p, 4096, PROT_READ | PROT_WRITE, 4644 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); 4645 ASSERT_NE((char *)0, q); 4646 4647 ASSERT_TRUE(q <= p); 4648 ASSERT_TRUE(q + 4096 > p); 4649 4650 EXPECT_NOT_POISONED(q[0]); 4651 EXPECT_NOT_POISONED(q[10]); 4652 EXPECT_NOT_POISONED(q[100]); 4653 4654 munmap(q, 4096); 4655 } 4656 4657 #if SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 4658 TEST(MemorySanitizer, MallocUsableSizeTest) { 4659 const size_t kArraySize = 100; 4660 char *array = Ident((char*)malloc(kArraySize)); 4661 int *int_ptr = Ident(new int); 4662 EXPECT_EQ(0U, malloc_usable_size(NULL)); 4663 EXPECT_EQ(kArraySize, malloc_usable_size(array)); 4664 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); 4665 free(array); 4666 delete int_ptr; 4667 } 4668 #endif // SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 4669 4670 #ifdef __x86_64__ 4671 static bool HaveBmi() { 4672 U4 a = 0, b = 0, c = 0, d = 0; 4673 asm("cpuid\n\t" : "=a"(a), "=D"(b), "=c"(c), "=d"(d) : "a"(7)); 4674 const U4 kBmi12Mask = (1U<<3) | (1U<<8); 4675 return (b & kBmi12Mask) == kBmi12Mask; 4676 } 4677 4678 __attribute__((target("bmi,bmi2"))) 4679 static void TestBZHI() { 4680 EXPECT_NOT_POISONED( 4681 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF000000), 24)); 4682 EXPECT_POISONED( 4683 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF800000), 24)); 4684 // Second operand saturates. 4685 EXPECT_POISONED( 4686 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0x80000000), 240)); 4687 // Any poison in the second operand poisons output. 4688 EXPECT_POISONED( 4689 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 1))); 4690 EXPECT_POISONED( 4691 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0x80000000))); 4692 EXPECT_POISONED( 4693 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0xFFFFFFFF))); 4694 4695 EXPECT_NOT_POISONED( 4696 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF00000000000000ULL), 56)); 4697 EXPECT_POISONED( 4698 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF80000000000000ULL), 56)); 4699 // Second operand saturates. 4700 EXPECT_POISONED( 4701 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0x8000000000000000ULL), 240)); 4702 // Any poison in the second operand poisons output. 4703 EXPECT_POISONED( 4704 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 1))); 4705 EXPECT_POISONED( 4706 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0x8000000000000000ULL))); 4707 EXPECT_POISONED( 4708 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0xFFFFFFFF00000000ULL))); 4709 } 4710 4711 ALWAYS_INLINE U4 bextr_imm(U4 start, U4 len) { 4712 start &= 0xFF; 4713 len &= 0xFF; 4714 return (len << 8) | start; 4715 } 4716 4717 __attribute__((target("bmi,bmi2"))) 4718 static void TestBEXTR() { 4719 EXPECT_POISONED( 4720 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(0, 8))); 4721 EXPECT_POISONED( 4722 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 8))); 4723 EXPECT_NOT_POISONED( 4724 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 8))); 4725 EXPECT_NOT_POISONED( 4726 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 800))); 4727 EXPECT_POISONED( 4728 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 800))); 4729 EXPECT_NOT_POISONED( 4730 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(5, 0))); 4731 4732 EXPECT_POISONED( 4733 __builtin_ia32_bextr_u32(0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 1))); 4734 EXPECT_POISONED(__builtin_ia32_bextr_u32( 4735 0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 0x80000000))); 4736 4737 EXPECT_POISONED( 4738 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(0, 8))); 4739 EXPECT_POISONED( 4740 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 8))); 4741 EXPECT_NOT_POISONED( 4742 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 8))); 4743 EXPECT_NOT_POISONED( 4744 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 800))); 4745 EXPECT_POISONED( 4746 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 800))); 4747 EXPECT_NOT_POISONED( 4748 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(5, 0))); 4749 4750 // Poison in the top half. 4751 EXPECT_NOT_POISONED(__builtin_ia32_bextr_u64( 4752 Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 8))); 4753 EXPECT_POISONED(__builtin_ia32_bextr_u64( 4754 Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 9))); 4755 4756 EXPECT_POISONED( 4757 __builtin_ia32_bextr_u64(0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 1))); 4758 EXPECT_POISONED(__builtin_ia32_bextr_u64( 4759 0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 0x80000000))); 4760 } 4761 4762 __attribute__((target("bmi,bmi2"))) 4763 static void TestPDEP() { 4764 U4 x = Poisoned<U4>(0, 0xFF00); 4765 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF)); 4766 EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF)); 4767 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF00)); 4768 EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00)); 4769 4770 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00) & 0xFF); 4771 EXPECT_POISONED(__builtin_ia32_pdep_si(0, Poisoned<U4>(0xF, 1))); 4772 4773 U8 y = Poisoned<U8>(0, 0xFF00); 4774 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF)); 4775 EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF)); 4776 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF0000000000)); 4777 EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF000000000000)); 4778 4779 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF00) & 0xFF); 4780 EXPECT_POISONED(__builtin_ia32_pdep_di(0, Poisoned<U4>(0xF, 1))); 4781 } 4782 4783 __attribute__((target("bmi,bmi2"))) 4784 static void TestPEXT() { 4785 U4 x = Poisoned<U4>(0, 0xFF00); 4786 EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0xFF)); 4787 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1FF)); 4788 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x100)); 4789 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1000)); 4790 EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0x10000)); 4791 4792 EXPECT_POISONED(__builtin_ia32_pext_si(0xFF00, Poisoned<U4>(0xFF, 1))); 4793 4794 U8 y = Poisoned<U8>(0, 0xFF0000000000); 4795 EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0xFF00000000)); 4796 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x1FF00000000)); 4797 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x10000000000)); 4798 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x100000000000)); 4799 EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0x1000000000000)); 4800 4801 EXPECT_POISONED(__builtin_ia32_pext_di(0xFF00, Poisoned<U8>(0xFF, 1))); 4802 } 4803 4804 TEST(MemorySanitizer, Bmi) { 4805 if (HaveBmi()) { 4806 TestBZHI(); 4807 TestBEXTR(); 4808 TestPDEP(); 4809 TestPEXT(); 4810 } 4811 } 4812 #endif // defined(__x86_64__) 4813 4814 namespace { 4815 volatile long z; 4816 4817 __attribute__((noinline,optnone)) void f(long a, long b, long c, long d, long e, long f) { 4818 z = a + b + c + d + e + f; 4819 } 4820 4821 __attribute__((noinline,optnone)) void throw_stuff() { 4822 throw 5; 4823 } 4824 4825 TEST(MemorySanitizer, throw_catch) { 4826 long x; 4827 // Poison __msan_param_tls. 4828 __msan_poison(&x, sizeof(x)); 4829 f(x, x, x, x, x, x); 4830 try { 4831 // This calls __gxx_personality_v0 through some libgcc_s function. 4832 // __gxx_personality_v0 is instrumented, libgcc_s is not; as a result, 4833 // __msan_param_tls is not updated and __gxx_personality_v0 can find 4834 // leftover poison from the previous call. 4835 // A suppression in msan_ignorelist.txt makes it work. 4836 throw_stuff(); 4837 } catch (const int &e) { 4838 // pass 4839 } 4840 } 4841 } // namespace 4842