msan_test.cc revision 3c531dfb0f06a53826bd55e1cae949abb03a6d6d
1//===-- msan_test.cc ------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of MemorySanitizer. 11// 12// MemorySanitizer unit tests. 13//===----------------------------------------------------------------------===// 14 15#ifndef MSAN_EXTERNAL_TEST_CONFIG 16#include "msan_test_config.h" 17#endif // MSAN_EXTERNAL_TEST_CONFIG 18 19#include "sanitizer/msan_interface.h" 20#include "msandr_test_so.h" 21 22#include <inttypes.h> 23#include <stdlib.h> 24#include <stdarg.h> 25#include <stdio.h> 26#include <assert.h> 27#include <wchar.h> 28#include <math.h> 29 30#include <arpa/inet.h> 31#include <dlfcn.h> 32#include <grp.h> 33#include <unistd.h> 34#include <link.h> 35#include <limits.h> 36#include <sys/time.h> 37#include <poll.h> 38#include <sys/types.h> 39#include <sys/stat.h> 40#include <fcntl.h> 41#include <sys/resource.h> 42#include <sys/ioctl.h> 43#include <sys/sysinfo.h> 44#include <sys/utsname.h> 45#include <sys/mman.h> 46#include <sys/vfs.h> 47#include <dirent.h> 48#include <pwd.h> 49#include <sys/socket.h> 50#include <netdb.h> 51 52#if defined(__i386__) || defined(__x86_64__) 53# include <emmintrin.h> 54# define MSAN_HAS_M128 1 55#else 56# define MSAN_HAS_M128 0 57#endif 58 59typedef unsigned char U1; 60typedef unsigned short U2; // NOLINT 61typedef unsigned int U4; 62typedef unsigned long long U8; // NOLINT 63typedef signed char S1; 64typedef signed short S2; // NOLINT 65typedef signed int S4; 66typedef signed long long S8; // NOLINT 67#define NOINLINE __attribute__((noinline)) 68#define INLINE __attribute__((always_inline)) 69 70static bool TrackingOrigins() { 71 S8 x; 72 __msan_set_origin(&x, sizeof(x), 0x1234); 73 U4 origin = __msan_get_origin(&x); 74 __msan_set_origin(&x, sizeof(x), 0); 75 return origin == 0x1234; 76} 77 78#define EXPECT_UMR(action) \ 79 do { \ 80 __msan_set_expect_umr(1); \ 81 action; \ 82 __msan_set_expect_umr(0); \ 83 } while (0) 84 85#define EXPECT_UMR_O(action, origin) \ 86 do { \ 87 __msan_set_expect_umr(1); \ 88 action; \ 89 __msan_set_expect_umr(0); \ 90 if (TrackingOrigins()) \ 91 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 92 } while (0) 93 94#define EXPECT_UMR_S(action, stack_origin) \ 95 do { \ 96 __msan_set_expect_umr(1); \ 97 action; \ 98 __msan_set_expect_umr(0); \ 99 U4 id = __msan_get_umr_origin(); \ 100 const char *str = __msan_get_origin_descr_if_stack(id); \ 101 if (!str || strcmp(str, stack_origin)) { \ 102 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 103 id, stack_origin, str); \ 104 EXPECT_EQ(1, 0); \ 105 } \ 106 } while (0) 107 108#define EXPECT_POISONED(x) ExpectPoisoned(x) 109 110template<typename T> 111void ExpectPoisoned(const T& t) { 112 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 113} 114 115#define EXPECT_POISONED_O(x, origin) \ 116 ExpectPoisonedWithOrigin(x, origin) 117 118template<typename T> 119void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 120 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 121 if (TrackingOrigins()) 122 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 123} 124 125#define EXPECT_POISONED_S(x, stack_origin) \ 126 ExpectPoisonedWithStackOrigin(x, stack_origin) 127 128template<typename T> 129void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 130 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 131 U4 id = __msan_get_origin((void*)&t); 132 const char *str = __msan_get_origin_descr_if_stack(id); 133 if (!str || strcmp(str, stack_origin)) { 134 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 135 id, stack_origin, str); 136 EXPECT_EQ(1, 0); 137 } 138} 139 140#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 141 142template<typename T> 143void ExpectNotPoisoned(const T& t) { 144 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 145} 146 147static U8 poisoned_array[100]; 148template<class T> 149T *GetPoisoned(int i = 0, T val = 0) { 150 T *res = (T*)&poisoned_array[i]; 151 *res = val; 152 __msan_poison(&poisoned_array[i], sizeof(T)); 153 return res; 154} 155 156template<class T> 157T *GetPoisonedO(int i, U4 origin, T val = 0) { 158 T *res = (T*)&poisoned_array[i]; 159 *res = val; 160 __msan_poison(&poisoned_array[i], sizeof(T)); 161 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 162 return res; 163} 164 165// This function returns its parameter but in such a way that compiler 166// can not prove it. 167template<class T> 168NOINLINE 169static T Ident(T t) { 170 volatile T ret = t; 171 return ret; 172} 173 174template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 175 176static volatile int g_one = 1; 177static volatile int g_zero = 0; 178static volatile int g_0 = 0; 179static volatile int g_1 = 1; 180 181S4 a_s4[100]; 182S8 a_s8[100]; 183 184// Check that malloc poisons memory. 185// A lot of tests below depend on this. 186TEST(MemorySanitizerSanity, PoisonInMalloc) { 187 int *x = (int*)malloc(sizeof(int)); 188 EXPECT_POISONED(*x); 189 free(x); 190} 191 192TEST(MemorySanitizer, NegativeTest1) { 193 S4 *x = GetPoisoned<S4>(); 194 if (g_one) 195 *x = 0; 196 EXPECT_NOT_POISONED(*x); 197} 198 199TEST(MemorySanitizer, PositiveTest1) { 200 // Load to store. 201 EXPECT_POISONED(*GetPoisoned<S1>()); 202 EXPECT_POISONED(*GetPoisoned<S2>()); 203 EXPECT_POISONED(*GetPoisoned<S4>()); 204 EXPECT_POISONED(*GetPoisoned<S8>()); 205 206 // S->S conversions. 207 EXPECT_POISONED(*GetPoisoned<S1>()); 208 EXPECT_POISONED(*GetPoisoned<S1>()); 209 EXPECT_POISONED(*GetPoisoned<S1>()); 210 211 EXPECT_POISONED(*GetPoisoned<S2>()); 212 EXPECT_POISONED(*GetPoisoned<S2>()); 213 EXPECT_POISONED(*GetPoisoned<S2>()); 214 215 EXPECT_POISONED(*GetPoisoned<S4>()); 216 EXPECT_POISONED(*GetPoisoned<S4>()); 217 EXPECT_POISONED(*GetPoisoned<S4>()); 218 219 EXPECT_POISONED(*GetPoisoned<S8>()); 220 EXPECT_POISONED(*GetPoisoned<S8>()); 221 EXPECT_POISONED(*GetPoisoned<S8>()); 222 223 // ZExt 224 EXPECT_POISONED(*GetPoisoned<U1>()); 225 EXPECT_POISONED(*GetPoisoned<U1>()); 226 EXPECT_POISONED(*GetPoisoned<U1>()); 227 EXPECT_POISONED(*GetPoisoned<U2>()); 228 EXPECT_POISONED(*GetPoisoned<U2>()); 229 EXPECT_POISONED(*GetPoisoned<U4>()); 230 231 // Unary ops. 232 EXPECT_POISONED(- *GetPoisoned<S4>()); 233 234 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 235 236 237 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 238 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 239} 240 241TEST(MemorySanitizer, Phi1) { 242 S4 c; 243 if (g_one) { 244 c = *GetPoisoned<S4>(); 245 } else { 246 break_optimization(0); 247 c = 0; 248 } 249 EXPECT_POISONED(c); 250} 251 252TEST(MemorySanitizer, Phi2) { 253 S4 i = *GetPoisoned<S4>(); 254 S4 n = g_one; 255 EXPECT_UMR(for (; i < g_one; i++);); 256 EXPECT_POISONED(i); 257} 258 259NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 260NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 261NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 262 263TEST(MemorySanitizer, ArgTest) { 264 Arg1ExpectUMR(*GetPoisoned<S4>()); 265 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 266 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 267} 268 269 270TEST(MemorySanitizer, CallAndRet) { 271 if (!__msan_has_dynamic_component()) return; 272 ReturnPoisoned<S1>(); 273 ReturnPoisoned<S2>(); 274 ReturnPoisoned<S4>(); 275 ReturnPoisoned<S8>(); 276 277 EXPECT_POISONED(ReturnPoisoned<S1>()); 278 EXPECT_POISONED(ReturnPoisoned<S2>()); 279 EXPECT_POISONED(ReturnPoisoned<S4>()); 280 EXPECT_POISONED(ReturnPoisoned<S8>()); 281} 282 283// malloc() in the following test may be optimized to produce a compile-time 284// undef value. Check that we trap on the volatile assignment anyway. 285TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 286 S4 *x = (int*)malloc(sizeof(S4)); 287 EXPECT_POISONED(*x); 288 free(x); 289} 290 291TEST(MemorySanitizer, Malloc) { 292 S4 *x = (int*)Ident(malloc(sizeof(S4))); 293 EXPECT_POISONED(*x); 294 free(x); 295} 296 297TEST(MemorySanitizer, Realloc) { 298 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 299 EXPECT_POISONED(x[0]); 300 x[0] = 1; 301 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 302 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 303 EXPECT_POISONED(x[1]); 304 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 305 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 306 EXPECT_POISONED(x[2]); 307 EXPECT_POISONED(x[1]); 308 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 309 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 310 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 311 EXPECT_POISONED(x[1]); 312 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 313 EXPECT_POISONED(x[1]); 314 EXPECT_POISONED(x[2]); 315 free(x); 316} 317 318TEST(MemorySanitizer, Calloc) { 319 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 320 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 321 // EXPECT_EQ(0, *x); 322 free(x); 323} 324 325TEST(MemorySanitizer, AndOr) { 326 U4 *p = GetPoisoned<U4>(); 327 // We poison two bytes in the midle of a 4-byte word to make the test 328 // correct regardless of endianness. 329 ((U1*)p)[1] = 0; 330 ((U1*)p)[2] = 0xff; 331 EXPECT_NOT_POISONED(*p & 0x00ffff00); 332 EXPECT_NOT_POISONED(*p & 0x00ff0000); 333 EXPECT_NOT_POISONED(*p & 0x0000ff00); 334 EXPECT_POISONED(*p & 0xff000000); 335 EXPECT_POISONED(*p & 0x000000ff); 336 EXPECT_POISONED(*p & 0x0000ffff); 337 EXPECT_POISONED(*p & 0xffff0000); 338 339 EXPECT_NOT_POISONED(*p | 0xff0000ff); 340 EXPECT_NOT_POISONED(*p | 0xff00ffff); 341 EXPECT_NOT_POISONED(*p | 0xffff00ff); 342 EXPECT_POISONED(*p | 0xff000000); 343 EXPECT_POISONED(*p | 0x000000ff); 344 EXPECT_POISONED(*p | 0x0000ffff); 345 EXPECT_POISONED(*p | 0xffff0000); 346 347 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 348} 349 350template<class T> 351static bool applyNot(T value, T shadow) { 352 __msan_partial_poison(&value, &shadow, sizeof(T)); 353 return !value; 354} 355 356TEST(MemorySanitizer, Not) { 357 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 358 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 359 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 360 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 361 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 362 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 363 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 364 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 365 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 366 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 367 368 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 369 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 370 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 371 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 372 373 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 374 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 375} 376 377TEST(MemorySanitizer, Shift) { 378 U4 *up = GetPoisoned<U4>(); 379 ((U1*)up)[0] = 0; 380 ((U1*)up)[3] = 0xff; 381 EXPECT_NOT_POISONED(*up >> 30); 382 EXPECT_NOT_POISONED(*up >> 24); 383 EXPECT_POISONED(*up >> 23); 384 EXPECT_POISONED(*up >> 10); 385 386 EXPECT_NOT_POISONED(*up << 30); 387 EXPECT_NOT_POISONED(*up << 24); 388 EXPECT_POISONED(*up << 23); 389 EXPECT_POISONED(*up << 10); 390 391 S4 *sp = (S4*)up; 392 EXPECT_NOT_POISONED(*sp >> 30); 393 EXPECT_NOT_POISONED(*sp >> 24); 394 EXPECT_POISONED(*sp >> 23); 395 EXPECT_POISONED(*sp >> 10); 396 397 sp = GetPoisoned<S4>(); 398 ((S1*)sp)[1] = 0; 399 ((S1*)sp)[2] = 0; 400 EXPECT_POISONED(*sp >> 31); 401 402 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 403 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 404} 405 406NOINLINE static int GetPoisonedZero() { 407 int *zero = new int; 408 *zero = 0; 409 __msan_poison(zero, sizeof(*zero)); 410 int res = *zero; 411 delete zero; 412 return res; 413} 414 415TEST(MemorySanitizer, LoadFromDirtyAddress) { 416 int *a = new int; 417 *a = 0; 418 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 419 delete a; 420} 421 422TEST(MemorySanitizer, StoreToDirtyAddress) { 423 int *a = new int; 424 EXPECT_UMR(a[GetPoisonedZero()] = 0); 425 break_optimization(a); 426 delete a; 427} 428 429 430NOINLINE void StackTestFunc() { 431 S4 p4; 432 S4 ok4 = 1; 433 S2 p2; 434 S2 ok2 = 1; 435 S1 p1; 436 S1 ok1 = 1; 437 break_optimization(&p4); 438 break_optimization(&ok4); 439 break_optimization(&p2); 440 break_optimization(&ok2); 441 break_optimization(&p1); 442 break_optimization(&ok1); 443 444 EXPECT_POISONED(p4); 445 EXPECT_POISONED(p2); 446 EXPECT_POISONED(p1); 447 EXPECT_NOT_POISONED(ok1); 448 EXPECT_NOT_POISONED(ok2); 449 EXPECT_NOT_POISONED(ok4); 450} 451 452TEST(MemorySanitizer, StackTest) { 453 StackTestFunc(); 454} 455 456NOINLINE void StackStressFunc() { 457 int foo[10000]; 458 break_optimization(foo); 459} 460 461TEST(MemorySanitizer, DISABLED_StackStressTest) { 462 for (int i = 0; i < 1000000; i++) 463 StackStressFunc(); 464} 465 466template<class T> 467void TestFloatingPoint() { 468 static volatile T v; 469 static T g[100]; 470 break_optimization(&g); 471 T *x = GetPoisoned<T>(); 472 T *y = GetPoisoned<T>(1); 473 EXPECT_POISONED(*x); 474 EXPECT_POISONED((long long)*x); 475 EXPECT_POISONED((int)*x); 476 g[0] = *x; 477 g[1] = *x + *y; 478 g[2] = *x - *y; 479 g[3] = *x * *y; 480} 481 482TEST(MemorySanitizer, FloatingPointTest) { 483 TestFloatingPoint<float>(); 484 TestFloatingPoint<double>(); 485} 486 487TEST(MemorySanitizer, DynMem) { 488 S4 x = 0; 489 S4 *y = GetPoisoned<S4>(); 490 memcpy(y, &x, g_one * sizeof(S4)); 491 EXPECT_NOT_POISONED(*y); 492} 493 494static char *DynRetTestStr; 495 496TEST(MemorySanitizer, DynRet) { 497 if (!__msan_has_dynamic_component()) return; 498 ReturnPoisoned<S8>(); 499 EXPECT_NOT_POISONED(clearenv()); 500} 501 502 503TEST(MemorySanitizer, DynRet1) { 504 if (!__msan_has_dynamic_component()) return; 505 ReturnPoisoned<S8>(); 506} 507 508struct LargeStruct { 509 S4 x[10]; 510}; 511 512NOINLINE 513LargeStruct LargeRetTest() { 514 LargeStruct res; 515 res.x[0] = *GetPoisoned<S4>(); 516 res.x[1] = *GetPoisoned<S4>(); 517 res.x[2] = *GetPoisoned<S4>(); 518 res.x[3] = *GetPoisoned<S4>(); 519 res.x[4] = *GetPoisoned<S4>(); 520 res.x[5] = *GetPoisoned<S4>(); 521 res.x[6] = *GetPoisoned<S4>(); 522 res.x[7] = *GetPoisoned<S4>(); 523 res.x[8] = *GetPoisoned<S4>(); 524 res.x[9] = *GetPoisoned<S4>(); 525 return res; 526} 527 528TEST(MemorySanitizer, strcmp) { 529 char s1[10]; 530 char s2[10]; 531 strncpy(s1, "foo", 10); 532 s2[0] = 'f'; 533 s2[1] = 'n'; 534 EXPECT_GT(strcmp(s1, s2), 0); 535 s2[1] = 'o'; 536 int res; 537 EXPECT_UMR(res = strcmp(s1, s2)); 538 EXPECT_NOT_POISONED(res); 539 EXPECT_EQ(strncmp(s1, s2, 1), 0); 540} 541 542TEST(MemorySanitizer, LargeRet) { 543 LargeStruct a = LargeRetTest(); 544 EXPECT_POISONED(a.x[0]); 545 EXPECT_POISONED(a.x[9]); 546} 547 548TEST(MemorySanitizer, strerror) { 549 char *buf = strerror(EINVAL); 550 EXPECT_NOT_POISONED(strlen(buf)); 551 buf = strerror(123456); 552 EXPECT_NOT_POISONED(strlen(buf)); 553} 554 555TEST(MemorySanitizer, strerror_r) { 556 errno = 0; 557 char buf[1000]; 558 char *res = strerror_r(EINVAL, buf, sizeof(buf)); 559 ASSERT_EQ(0, errno); 560 if (!res) res = buf; // POSIX version success. 561 EXPECT_NOT_POISONED(strlen(res)); 562} 563 564TEST(MemorySanitizer, fread) { 565 char *x = new char[32]; 566 FILE *f = fopen("/proc/self/stat", "r"); 567 assert(f); 568 fread(x, 1, 32, f); 569 EXPECT_NOT_POISONED(x[0]); 570 EXPECT_NOT_POISONED(x[16]); 571 EXPECT_NOT_POISONED(x[31]); 572 fclose(f); 573 delete x; 574} 575 576TEST(MemorySanitizer, read) { 577 char *x = new char[32]; 578 int fd = open("/proc/self/stat", O_RDONLY); 579 assert(fd > 0); 580 int sz = read(fd, x, 32); 581 assert(sz == 32); 582 EXPECT_NOT_POISONED(x[0]); 583 EXPECT_NOT_POISONED(x[16]); 584 EXPECT_NOT_POISONED(x[31]); 585 close(fd); 586 delete x; 587} 588 589TEST(MemorySanitizer, pread) { 590 char *x = new char[32]; 591 int fd = open("/proc/self/stat", O_RDONLY); 592 assert(fd > 0); 593 int sz = pread(fd, x, 32, 0); 594 assert(sz == 32); 595 EXPECT_NOT_POISONED(x[0]); 596 EXPECT_NOT_POISONED(x[16]); 597 EXPECT_NOT_POISONED(x[31]); 598 close(fd); 599 delete x; 600} 601 602TEST(MemorySanitizer, readv) { 603 char buf[2011]; 604 struct iovec iov[2]; 605 iov[0].iov_base = buf + 1; 606 iov[0].iov_len = 5; 607 iov[1].iov_base = buf + 10; 608 iov[1].iov_len = 2000; 609 int fd = open("/proc/self/stat", O_RDONLY); 610 assert(fd > 0); 611 int sz = readv(fd, iov, 2); 612 ASSERT_LT(sz, 5 + 2000); 613 ASSERT_GT(sz, iov[0].iov_len); 614 EXPECT_POISONED(buf[0]); 615 EXPECT_NOT_POISONED(buf[1]); 616 EXPECT_NOT_POISONED(buf[5]); 617 EXPECT_POISONED(buf[6]); 618 EXPECT_POISONED(buf[9]); 619 EXPECT_NOT_POISONED(buf[10]); 620 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 621 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 622 close(fd); 623} 624 625TEST(MemorySanitizer, preadv) { 626 char buf[2011]; 627 struct iovec iov[2]; 628 iov[0].iov_base = buf + 1; 629 iov[0].iov_len = 5; 630 iov[1].iov_base = buf + 10; 631 iov[1].iov_len = 2000; 632 int fd = open("/proc/self/stat", O_RDONLY); 633 assert(fd > 0); 634 int sz = preadv(fd, iov, 2, 3); 635 ASSERT_LT(sz, 5 + 2000); 636 ASSERT_GT(sz, iov[0].iov_len); 637 EXPECT_POISONED(buf[0]); 638 EXPECT_NOT_POISONED(buf[1]); 639 EXPECT_NOT_POISONED(buf[5]); 640 EXPECT_POISONED(buf[6]); 641 EXPECT_POISONED(buf[9]); 642 EXPECT_NOT_POISONED(buf[10]); 643 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 644 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 645 close(fd); 646} 647 648// FIXME: fails now. 649TEST(MemorySanitizer, DISABLED_ioctl) { 650 struct winsize ws; 651 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 652 EXPECT_NOT_POISONED(ws.ws_col); 653} 654 655TEST(MemorySanitizer, readlink) { 656 char *x = new char[1000]; 657 readlink("/proc/self/exe", x, 1000); 658 EXPECT_NOT_POISONED(x[0]); 659 delete [] x; 660} 661 662 663TEST(MemorySanitizer, stat) { 664 struct stat* st = new struct stat; 665 int res = stat("/proc/self/stat", st); 666 assert(!res); 667 EXPECT_NOT_POISONED(st->st_dev); 668 EXPECT_NOT_POISONED(st->st_mode); 669 EXPECT_NOT_POISONED(st->st_size); 670} 671 672TEST(MemorySanitizer, statfs) { 673 struct statfs* st = new struct statfs; 674 int res = statfs("/", st); 675 assert(!res); 676 EXPECT_NOT_POISONED(st->f_type); 677 EXPECT_NOT_POISONED(st->f_bfree); 678 EXPECT_NOT_POISONED(st->f_namelen); 679} 680 681TEST(MemorySanitizer, pipe) { 682 int* pipefd = new int[2]; 683 int res = pipe(pipefd); 684 assert(!res); 685 EXPECT_NOT_POISONED(pipefd[0]); 686 EXPECT_NOT_POISONED(pipefd[1]); 687 close(pipefd[0]); 688 close(pipefd[1]); 689} 690 691TEST(MemorySanitizer, pipe2) { 692 int* pipefd = new int[2]; 693 int res = pipe2(pipefd, O_NONBLOCK); 694 assert(!res); 695 EXPECT_NOT_POISONED(pipefd[0]); 696 EXPECT_NOT_POISONED(pipefd[1]); 697 close(pipefd[0]); 698 close(pipefd[1]); 699} 700 701TEST(MemorySanitizer, socketpair) { 702 int sv[2]; 703 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 704 assert(!res); 705 EXPECT_NOT_POISONED(sv[0]); 706 EXPECT_NOT_POISONED(sv[1]); 707 close(sv[0]); 708 close(sv[1]); 709} 710 711TEST(MemorySanitizer, poll) { 712 int* pipefd = new int[2]; 713 int res = pipe(pipefd); 714 ASSERT_EQ(0, res); 715 716 char data = 42; 717 res = write(pipefd[1], &data, 1); 718 ASSERT_EQ(1, res); 719 720 pollfd fds[2]; 721 fds[0].fd = pipefd[0]; 722 fds[0].events = POLLIN; 723 fds[1].fd = pipefd[1]; 724 fds[1].events = POLLIN; 725 res = poll(fds, 2, 500); 726 ASSERT_EQ(1, res); 727 EXPECT_NOT_POISONED(fds[0].revents); 728 EXPECT_NOT_POISONED(fds[1].revents); 729 730 close(pipefd[0]); 731 close(pipefd[1]); 732} 733 734TEST(MemorySanitizer, poll_positive) { 735 int* pipefd = new int[2]; 736 int res = pipe(pipefd); 737 ASSERT_EQ(0, res); 738 739 pollfd fds[2]; 740 fds[0].fd = pipefd[0]; 741 fds[0].events = POLLIN; 742 // fds[1].fd uninitialized 743 fds[1].events = POLLIN; 744 EXPECT_UMR(poll(fds, 2, 0)); 745 746 close(pipefd[0]); 747 close(pipefd[1]); 748} 749 750TEST(MemorySanitizer, bind_getsockname) { 751 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 752 753 struct sockaddr_in sai; 754 memset(&sai, 0, sizeof(sai)); 755 sai.sin_family = AF_UNIX; 756 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 757 758 assert(!res); 759 char buf[200]; 760 socklen_t addrlen; 761 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 762 763 addrlen = sizeof(buf); 764 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 765 EXPECT_NOT_POISONED(addrlen); 766 EXPECT_NOT_POISONED(buf[0]); 767 EXPECT_NOT_POISONED(buf[addrlen - 1]); 768 EXPECT_POISONED(buf[addrlen]); 769 close(sock); 770} 771 772TEST(MemorySanitizer, accept) { 773 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 774 ASSERT_LT(0, listen_socket); 775 776 struct sockaddr_in sai; 777 sai.sin_family = AF_INET; 778 sai.sin_port = 0; 779 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 780 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 781 ASSERT_EQ(0, res); 782 783 res = listen(listen_socket, 1); 784 ASSERT_EQ(0, res); 785 786 socklen_t sz = sizeof(sai); 787 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 788 ASSERT_EQ(0, res); 789 ASSERT_EQ(sizeof(sai), sz); 790 791 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 792 ASSERT_LT(0, connect_socket); 793 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 794 ASSERT_EQ(0, res); 795 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 796 ASSERT_EQ(-1, res); 797 ASSERT_EQ(EINPROGRESS, errno); 798 799 __msan_poison(&sai, sizeof(sai)); 800 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 801 ASSERT_LT(0, new_sock); 802 ASSERT_EQ(sizeof(sai), sz); 803 EXPECT_NOT_POISONED(sai); 804 805 __msan_poison(&sai, sizeof(sai)); 806 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 807 ASSERT_EQ(0, res); 808 ASSERT_EQ(sizeof(sai), sz); 809 EXPECT_NOT_POISONED(sai); 810 811 close(new_sock); 812 close(connect_socket); 813 close(listen_socket); 814} 815 816TEST(MemorySanitizer, getaddrinfo) { 817 struct addrinfo *ai; 818 struct addrinfo hints; 819 memset(&hints, 0, sizeof(hints)); 820 hints.ai_family = AF_INET; 821 int res = getaddrinfo("localhost", NULL, &hints, &ai); 822 ASSERT_EQ(0, res); 823 EXPECT_NOT_POISONED(*ai); 824 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 825 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 826} 827 828TEST(MemorySanitizer, getnameinfo) { 829 struct sockaddr_in sai; 830 sai.sin_family = AF_INET; 831 sai.sin_port = 80; 832 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 833 char host[500]; 834 char serv[500]; 835 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 836 sizeof(host), serv, sizeof(serv), 0); 837 ASSERT_EQ(0, res); 838 EXPECT_NOT_POISONED(host[0]); 839 EXPECT_POISONED(host[sizeof(host) - 1]); 840 841 ASSERT_NE(0, strlen(host)); 842 EXPECT_NOT_POISONED(serv[0]); 843 EXPECT_POISONED(serv[sizeof(serv) - 1]); 844 ASSERT_NE(0, strlen(serv)); 845} 846 847#define EXPECT_HOSTENT_NOT_POISONED(he) \ 848 do { \ 849 EXPECT_NOT_POISONED(*(he)); \ 850 ASSERT_NE((void *) 0, (he)->h_name); \ 851 ASSERT_NE((void *) 0, (he)->h_aliases); \ 852 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 853 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 854 char **p = (he)->h_aliases; \ 855 while (*p) { \ 856 EXPECT_NOT_POISONED(strlen(*p)); \ 857 ++p; \ 858 } \ 859 char **q = (he)->h_addr_list; \ 860 while (*q) { \ 861 EXPECT_NOT_POISONED(*q[0]); \ 862 ++q; \ 863 } \ 864 EXPECT_NOT_POISONED(*q); \ 865 } while (0) 866 867TEST(MemorySanitizer, gethostent) { 868 struct hostent *he = gethostent(); 869 ASSERT_NE((void *)NULL, he); 870 EXPECT_HOSTENT_NOT_POISONED(he); 871} 872 873#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 874 875TEST(MemorySanitizer, gethostbyname) { 876 struct hostent *he = gethostbyname("localhost"); 877 ASSERT_NE((void *)NULL, he); 878 EXPECT_HOSTENT_NOT_POISONED(he); 879} 880 881#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 882 883TEST(MemorySanitizer, gethostbyname2) { 884 struct hostent *he = gethostbyname2("localhost", AF_INET); 885 ASSERT_NE((void *)NULL, he); 886 EXPECT_HOSTENT_NOT_POISONED(he); 887} 888 889TEST(MemorySanitizer, gethostbyaddr) { 890 in_addr_t addr = inet_addr("127.0.0.1"); 891 EXPECT_NOT_POISONED(addr); 892 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 893 ASSERT_NE((void *)NULL, he); 894 EXPECT_HOSTENT_NOT_POISONED(he); 895} 896 897TEST(MemorySanitizer, gethostent_r) { 898 char buf[2000]; 899 struct hostent he; 900 struct hostent *result; 901 int err; 902 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 903 ASSERT_EQ(0, res); 904 EXPECT_NOT_POISONED(result); 905 ASSERT_NE((void *)NULL, result); 906 EXPECT_HOSTENT_NOT_POISONED(result); 907 EXPECT_NOT_POISONED(err); 908} 909 910TEST(MemorySanitizer, gethostbyname_r) { 911 char buf[2000]; 912 struct hostent he; 913 struct hostent *result; 914 int err; 915 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 916 ASSERT_EQ(0, res); 917 EXPECT_NOT_POISONED(result); 918 ASSERT_NE((void *)NULL, result); 919 EXPECT_HOSTENT_NOT_POISONED(result); 920 EXPECT_NOT_POISONED(err); 921} 922 923TEST(MemorySanitizer, gethostbyname2_r) { 924 char buf[2000]; 925 struct hostent he; 926 struct hostent *result; 927 int err; 928 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 929 &result, &err); 930 ASSERT_EQ(0, res); 931 EXPECT_NOT_POISONED(result); 932 ASSERT_NE((void *)NULL, result); 933 EXPECT_HOSTENT_NOT_POISONED(result); 934 EXPECT_NOT_POISONED(err); 935} 936 937TEST(MemorySanitizer, gethostbyaddr_r) { 938 char buf[2000]; 939 struct hostent he; 940 struct hostent *result; 941 int err; 942 in_addr_t addr = inet_addr("127.0.0.1"); 943 EXPECT_NOT_POISONED(addr); 944 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 945 &result, &err); 946 ASSERT_EQ(0, res); 947 EXPECT_NOT_POISONED(result); 948 ASSERT_NE((void *)NULL, result); 949 EXPECT_HOSTENT_NOT_POISONED(result); 950 EXPECT_NOT_POISONED(err); 951} 952 953TEST(MemorySanitizer, getsockopt) { 954 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 955 struct linger l[2]; 956 socklen_t sz = sizeof(l[0]); 957 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 958 ASSERT_EQ(0, res); 959 ASSERT_EQ(sizeof(l[0]), sz); 960 EXPECT_NOT_POISONED(l[0]); 961 EXPECT_POISONED(*(char *)(l + 1)); 962} 963 964TEST(MemorySanitizer, getcwd) { 965 char path[PATH_MAX + 1]; 966 char* res = getcwd(path, sizeof(path)); 967 assert(res); 968 EXPECT_NOT_POISONED(path[0]); 969} 970 971TEST(MemorySanitizer, getcwd_gnu) { 972 char* res = getcwd(NULL, 0); 973 assert(res); 974 EXPECT_NOT_POISONED(res[0]); 975 free(res); 976} 977 978TEST(MemorySanitizer, get_current_dir_name) { 979 char* res = get_current_dir_name(); 980 assert(res); 981 EXPECT_NOT_POISONED(res[0]); 982 free(res); 983} 984 985TEST(MemorySanitizer, confstr) { 986 char buf[3]; 987 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 988 ASSERT_GT(res, sizeof(buf)); 989 EXPECT_NOT_POISONED(buf[0]); 990 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 991 992 char buf2[1000]; 993 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 994 ASSERT_LT(res, sizeof(buf2)); 995 EXPECT_NOT_POISONED(buf2[0]); 996 EXPECT_NOT_POISONED(buf2[res - 1]); 997 EXPECT_POISONED(buf2[res]); 998 ASSERT_EQ(res, strlen(buf2) + 1); 999} 1000 1001TEST(MemorySanitizer, readdir) { 1002 DIR *dir = opendir("."); 1003 struct dirent *d = readdir(dir); 1004 assert(d); 1005 EXPECT_NOT_POISONED(d->d_name[0]); 1006 closedir(dir); 1007} 1008 1009TEST(MemorySanitizer, readdir_r) { 1010 DIR *dir = opendir("."); 1011 struct dirent d; 1012 struct dirent *pd; 1013 int res = readdir_r(dir, &d, &pd); 1014 assert(!res); 1015 EXPECT_NOT_POISONED(pd); 1016 EXPECT_NOT_POISONED(d.d_name[0]); 1017 closedir(dir); 1018} 1019 1020TEST(MemorySanitizer, realpath) { 1021 const char* relpath = "."; 1022 char path[PATH_MAX + 1]; 1023 char* res = realpath(relpath, path); 1024 assert(res); 1025 EXPECT_NOT_POISONED(path[0]); 1026} 1027 1028TEST(MemorySanitizer, realpath_null) { 1029 const char* relpath = "."; 1030 char* res = realpath(relpath, NULL); 1031 printf("%d, %s\n", errno, strerror(errno)); 1032 assert(res); 1033 EXPECT_NOT_POISONED(res[0]); 1034 free(res); 1035} 1036 1037TEST(MemorySanitizer, canonicalize_file_name) { 1038 const char* relpath = "."; 1039 char* res = canonicalize_file_name(relpath); 1040 assert(res); 1041 EXPECT_NOT_POISONED(res[0]); 1042 free(res); 1043} 1044 1045extern char **environ; 1046 1047TEST(MemorySanitizer, setenv) { 1048 setenv("AAA", "BBB", 1); 1049 for (char **envp = environ; *envp; ++envp) { 1050 EXPECT_NOT_POISONED(*envp); 1051 EXPECT_NOT_POISONED(*envp[0]); 1052 } 1053} 1054 1055TEST(MemorySanitizer, putenv) { 1056 char s[] = "AAA=BBB"; 1057 putenv(s); 1058 for (char **envp = environ; *envp; ++envp) { 1059 EXPECT_NOT_POISONED(*envp); 1060 EXPECT_NOT_POISONED(*envp[0]); 1061 } 1062} 1063 1064TEST(MemorySanitizer, memcpy) { 1065 char* x = new char[2]; 1066 char* y = new char[2]; 1067 x[0] = 1; 1068 x[1] = *GetPoisoned<char>(); 1069 memcpy(y, x, 2); 1070 EXPECT_NOT_POISONED(y[0]); 1071 EXPECT_POISONED(y[1]); 1072} 1073 1074TEST(MemorySanitizer, memmove) { 1075 char* x = new char[2]; 1076 char* y = new char[2]; 1077 x[0] = 1; 1078 x[1] = *GetPoisoned<char>(); 1079 memmove(y, x, 2); 1080 EXPECT_NOT_POISONED(y[0]); 1081 EXPECT_POISONED(y[1]); 1082} 1083 1084TEST(MemorySanitizer, bcopy) { 1085 char* x = new char[2]; 1086 char* y = new char[2]; 1087 x[0] = 1; 1088 x[1] = *GetPoisoned<char>(); 1089 bcopy(x, y, 2); 1090 EXPECT_NOT_POISONED(y[0]); 1091 EXPECT_POISONED(y[1]); 1092} 1093 1094TEST(MemorySanitizer, strdup) { 1095 char buf[4] = "abc"; 1096 __msan_poison(buf + 2, sizeof(*buf)); 1097 char *x = strdup(buf); 1098 EXPECT_NOT_POISONED(x[0]); 1099 EXPECT_NOT_POISONED(x[1]); 1100 EXPECT_POISONED(x[2]); 1101 EXPECT_NOT_POISONED(x[3]); 1102 free(x); 1103} 1104 1105TEST(MemorySanitizer, strndup) { 1106 char buf[4] = "abc"; 1107 __msan_poison(buf + 2, sizeof(*buf)); 1108 char *x = strndup(buf, 3); 1109 EXPECT_NOT_POISONED(x[0]); 1110 EXPECT_NOT_POISONED(x[1]); 1111 EXPECT_POISONED(x[2]); 1112 EXPECT_NOT_POISONED(x[3]); 1113 free(x); 1114} 1115 1116TEST(MemorySanitizer, strndup_short) { 1117 char buf[4] = "abc"; 1118 __msan_poison(buf + 1, sizeof(*buf)); 1119 __msan_poison(buf + 2, sizeof(*buf)); 1120 char *x = strndup(buf, 2); 1121 EXPECT_NOT_POISONED(x[0]); 1122 EXPECT_POISONED(x[1]); 1123 EXPECT_NOT_POISONED(x[2]); 1124 free(x); 1125} 1126 1127 1128template<class T, int size> 1129void TestOverlapMemmove() { 1130 T *x = new T[size]; 1131 assert(size >= 3); 1132 x[2] = 0; 1133 memmove(x, x + 1, (size - 1) * sizeof(T)); 1134 EXPECT_NOT_POISONED(x[1]); 1135 if (!__msan_has_dynamic_component()) { 1136 // FIXME: under DR we will lose this information 1137 // because accesses in memmove will unpoisin the shadow. 1138 // We need to use our own memove implementation instead of libc's. 1139 EXPECT_POISONED(x[0]); 1140 EXPECT_POISONED(x[2]); 1141 } 1142 delete [] x; 1143} 1144 1145TEST(MemorySanitizer, overlap_memmove) { 1146 TestOverlapMemmove<U1, 10>(); 1147 TestOverlapMemmove<U1, 1000>(); 1148 TestOverlapMemmove<U8, 4>(); 1149 TestOverlapMemmove<U8, 1000>(); 1150} 1151 1152TEST(MemorySanitizer, strcpy) { // NOLINT 1153 char* x = new char[3]; 1154 char* y = new char[3]; 1155 x[0] = 'a'; 1156 x[1] = *GetPoisoned<char>(1, 1); 1157 x[2] = 0; 1158 strcpy(y, x); // NOLINT 1159 EXPECT_NOT_POISONED(y[0]); 1160 EXPECT_POISONED(y[1]); 1161 EXPECT_NOT_POISONED(y[2]); 1162} 1163 1164TEST(MemorySanitizer, strncpy) { // NOLINT 1165 char* x = new char[3]; 1166 char* y = new char[3]; 1167 x[0] = 'a'; 1168 x[1] = *GetPoisoned<char>(1, 1); 1169 x[2] = 0; 1170 strncpy(y, x, 2); // NOLINT 1171 EXPECT_NOT_POISONED(y[0]); 1172 EXPECT_POISONED(y[1]); 1173 EXPECT_POISONED(y[2]); 1174} 1175 1176TEST(MemorySanitizer, stpcpy) { // NOLINT 1177 char* x = new char[3]; 1178 char* y = new char[3]; 1179 x[0] = 'a'; 1180 x[1] = *GetPoisoned<char>(1, 1); 1181 x[2] = 0; 1182 char *res = stpcpy(y, x); // NOLINT 1183 ASSERT_EQ(res, y + 2); 1184 EXPECT_NOT_POISONED(y[0]); 1185 EXPECT_POISONED(y[1]); 1186 EXPECT_NOT_POISONED(y[2]); 1187} 1188 1189TEST(MemorySanitizer, strtol) { 1190 char *e; 1191 assert(1 == strtol("1", &e, 10)); 1192 EXPECT_NOT_POISONED((S8) e); 1193} 1194 1195TEST(MemorySanitizer, strtoll) { 1196 char *e; 1197 assert(1 == strtoll("1", &e, 10)); 1198 EXPECT_NOT_POISONED((S8) e); 1199} 1200 1201TEST(MemorySanitizer, strtoul) { 1202 char *e; 1203 assert(1 == strtoul("1", &e, 10)); 1204 EXPECT_NOT_POISONED((S8) e); 1205} 1206 1207TEST(MemorySanitizer, strtoull) { 1208 char *e; 1209 assert(1 == strtoull("1", &e, 10)); 1210 EXPECT_NOT_POISONED((S8) e); 1211} 1212 1213TEST(MemorySanitizer, strtoimax) { 1214 char *e; 1215 assert(1 == strtoimax("1", &e, 10)); 1216 EXPECT_NOT_POISONED((S8) e); 1217} 1218 1219TEST(MemorySanitizer, strtoumax) { 1220 char *e; 1221 assert(1 == strtoumax("1", &e, 10)); 1222 EXPECT_NOT_POISONED((S8) e); 1223} 1224 1225TEST(MemorySanitizer, strtod) { 1226 char *e; 1227 assert(0 != strtod("1.5", &e)); 1228 EXPECT_NOT_POISONED((S8) e); 1229} 1230 1231TEST(MemorySanitizer, strtof) { 1232 char *e; 1233 assert(0 != strtof("1.5", &e)); 1234 EXPECT_NOT_POISONED((S8) e); 1235} 1236 1237TEST(MemorySanitizer, strtold) { 1238 char *e; 1239 assert(0 != strtold("1.5", &e)); 1240 EXPECT_NOT_POISONED((S8) e); 1241} 1242 1243TEST(MemorySanitizer, modf) { 1244 double x, y; 1245 x = modf(2.1, &y); 1246 EXPECT_NOT_POISONED(y); 1247} 1248 1249TEST(MemorySanitizer, modff) { 1250 float x, y; 1251 x = modff(2.1, &y); 1252 EXPECT_NOT_POISONED(y); 1253} 1254 1255TEST(MemorySanitizer, modfl) { 1256 long double x, y; 1257 x = modfl(2.1, &y); 1258 EXPECT_NOT_POISONED(y); 1259} 1260 1261TEST(MemorySanitizer, sprintf) { // NOLINT 1262 char buff[10]; 1263 break_optimization(buff); 1264 EXPECT_POISONED(buff[0]); 1265 int res = sprintf(buff, "%d", 1234567); // NOLINT 1266 assert(res == 7); 1267 assert(buff[0] == '1'); 1268 assert(buff[1] == '2'); 1269 assert(buff[2] == '3'); 1270 assert(buff[6] == '7'); 1271 assert(buff[7] == 0); 1272 EXPECT_POISONED(buff[8]); 1273} 1274 1275TEST(MemorySanitizer, snprintf) { 1276 char buff[10]; 1277 break_optimization(buff); 1278 EXPECT_POISONED(buff[0]); 1279 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1280 assert(res == 7); 1281 assert(buff[0] == '1'); 1282 assert(buff[1] == '2'); 1283 assert(buff[2] == '3'); 1284 assert(buff[6] == '7'); 1285 assert(buff[7] == 0); 1286 EXPECT_POISONED(buff[8]); 1287} 1288 1289TEST(MemorySanitizer, swprintf) { 1290 wchar_t buff[10]; 1291 assert(sizeof(wchar_t) == 4); 1292 break_optimization(buff); 1293 EXPECT_POISONED(buff[0]); 1294 int res = swprintf(buff, 9, L"%d", 1234567); 1295 assert(res == 7); 1296 assert(buff[0] == '1'); 1297 assert(buff[1] == '2'); 1298 assert(buff[2] == '3'); 1299 assert(buff[6] == '7'); 1300 assert(buff[7] == 0); 1301 EXPECT_POISONED(buff[8]); 1302} 1303 1304TEST(MemorySanitizer, asprintf) { // NOLINT 1305 char *pbuf; 1306 EXPECT_POISONED(pbuf); 1307 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1308 assert(res == 7); 1309 EXPECT_NOT_POISONED(pbuf); 1310 assert(pbuf[0] == '1'); 1311 assert(pbuf[1] == '2'); 1312 assert(pbuf[2] == '3'); 1313 assert(pbuf[6] == '7'); 1314 assert(pbuf[7] == 0); 1315 free(pbuf); 1316} 1317 1318TEST(MemorySanitizer, mbstowcs) { 1319 const char *x = "abc"; 1320 wchar_t buff[10]; 1321 int res = mbstowcs(buff, x, 2); 1322 EXPECT_EQ(2, res); 1323 EXPECT_EQ(L'a', buff[0]); 1324 EXPECT_EQ(L'b', buff[1]); 1325 EXPECT_POISONED(buff[2]); 1326 res = mbstowcs(buff, x, 10); 1327 EXPECT_EQ(3, res); 1328 EXPECT_NOT_POISONED(buff[3]); 1329} 1330 1331TEST(MemorySanitizer, wcstombs) { 1332 const wchar_t *x = L"abc"; 1333 char buff[10]; 1334 int res = wcstombs(buff, x, 4); 1335 EXPECT_EQ(res, 3); 1336 EXPECT_EQ(buff[0], 'a'); 1337 EXPECT_EQ(buff[1], 'b'); 1338 EXPECT_EQ(buff[2], 'c'); 1339} 1340 1341TEST(MemorySanitizer, wcsrtombs) { 1342 const wchar_t *x = L"abc"; 1343 const wchar_t *p = x; 1344 char buff[10]; 1345 mbstate_t mbs; 1346 memset(&mbs, 0, sizeof(mbs)); 1347 int res = wcsrtombs(buff, &p, 4, &mbs); 1348 EXPECT_EQ(res, 3); 1349 EXPECT_EQ(buff[0], 'a'); 1350 EXPECT_EQ(buff[1], 'b'); 1351 EXPECT_EQ(buff[2], 'c'); 1352 EXPECT_EQ(buff[3], '\0'); 1353 EXPECT_POISONED(buff[4]); 1354} 1355 1356TEST(MemorySanitizer, wcsnrtombs) { 1357 const wchar_t *x = L"abc"; 1358 const wchar_t *p = x; 1359 char buff[10]; 1360 mbstate_t mbs; 1361 memset(&mbs, 0, sizeof(mbs)); 1362 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1363 EXPECT_EQ(res, 2); 1364 EXPECT_EQ(buff[0], 'a'); 1365 EXPECT_EQ(buff[1], 'b'); 1366 EXPECT_POISONED(buff[2]); 1367} 1368 1369TEST(MemorySanitizer, mbtowc) { 1370 const char *x = "abc"; 1371 wchar_t wx; 1372 int res = mbtowc(&wx, x, 3); 1373 EXPECT_GT(res, 0); 1374 EXPECT_NOT_POISONED(wx); 1375} 1376 1377TEST(MemorySanitizer, mbrtowc) { 1378 const char *x = "abc"; 1379 wchar_t wx; 1380 mbstate_t mbs; 1381 memset(&mbs, 0, sizeof(mbs)); 1382 int res = mbrtowc(&wx, x, 3, &mbs); 1383 EXPECT_GT(res, 0); 1384 EXPECT_NOT_POISONED(wx); 1385} 1386 1387TEST(MemorySanitizer, gettimeofday) { 1388 struct timeval tv; 1389 struct timezone tz; 1390 break_optimization(&tv); 1391 break_optimization(&tz); 1392 assert(sizeof(tv) == 16); 1393 assert(sizeof(tz) == 8); 1394 EXPECT_POISONED(tv.tv_sec); 1395 EXPECT_POISONED(tv.tv_usec); 1396 EXPECT_POISONED(tz.tz_minuteswest); 1397 EXPECT_POISONED(tz.tz_dsttime); 1398 assert(0 == gettimeofday(&tv, &tz)); 1399 EXPECT_NOT_POISONED(tv.tv_sec); 1400 EXPECT_NOT_POISONED(tv.tv_usec); 1401 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1402 EXPECT_NOT_POISONED(tz.tz_dsttime); 1403} 1404 1405TEST(MemorySanitizer, clock_gettime) { 1406 struct timespec tp; 1407 EXPECT_POISONED(tp.tv_sec); 1408 EXPECT_POISONED(tp.tv_nsec); 1409 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1410 EXPECT_NOT_POISONED(tp.tv_sec); 1411 EXPECT_NOT_POISONED(tp.tv_nsec); 1412} 1413 1414TEST(MemorySanitizer, clock_getres) { 1415 struct timespec tp; 1416 EXPECT_POISONED(tp.tv_sec); 1417 EXPECT_POISONED(tp.tv_nsec); 1418 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1419 EXPECT_POISONED(tp.tv_sec); 1420 EXPECT_POISONED(tp.tv_nsec); 1421 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1422 EXPECT_NOT_POISONED(tp.tv_sec); 1423 EXPECT_NOT_POISONED(tp.tv_nsec); 1424} 1425 1426TEST(MemorySanitizer, getitimer) { 1427 struct itimerval it1, it2; 1428 int res; 1429 EXPECT_POISONED(it1.it_interval.tv_sec); 1430 EXPECT_POISONED(it1.it_interval.tv_usec); 1431 EXPECT_POISONED(it1.it_value.tv_sec); 1432 EXPECT_POISONED(it1.it_value.tv_usec); 1433 res = getitimer(ITIMER_VIRTUAL, &it1); 1434 assert(!res); 1435 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1436 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1437 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1438 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1439 1440 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1441 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1442 1443 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1444 assert(!res); 1445 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1446 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1447 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1448 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1449 1450 // Check that old_value can be 0, and disable the timer. 1451 memset(&it1, 0, sizeof(it1)); 1452 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1453 assert(!res); 1454} 1455 1456TEST(MemorySanitizer, setitimer_null) { 1457 setitimer(ITIMER_VIRTUAL, 0, 0); 1458 // Not testing the return value, since it the behaviour seems to differ 1459 // between libc implementations and POSIX. 1460 // Should never crash, though. 1461} 1462 1463TEST(MemorySanitizer, time) { 1464 time_t t; 1465 EXPECT_POISONED(t); 1466 time_t t2 = time(&t); 1467 assert(t2 != (time_t)-1); 1468 EXPECT_NOT_POISONED(t); 1469} 1470 1471TEST(MemorySanitizer, localtime) { 1472 time_t t = 123; 1473 struct tm *time = localtime(&t); 1474 assert(time != 0); 1475 EXPECT_NOT_POISONED(time->tm_sec); 1476 EXPECT_NOT_POISONED(time->tm_hour); 1477 EXPECT_NOT_POISONED(time->tm_year); 1478 EXPECT_NOT_POISONED(time->tm_isdst); 1479} 1480 1481TEST(MemorySanitizer, localtime_r) { 1482 time_t t = 123; 1483 struct tm time; 1484 struct tm *res = localtime_r(&t, &time); 1485 assert(res != 0); 1486 EXPECT_NOT_POISONED(time.tm_sec); 1487 EXPECT_NOT_POISONED(time.tm_hour); 1488 EXPECT_NOT_POISONED(time.tm_year); 1489 EXPECT_NOT_POISONED(time.tm_isdst); 1490} 1491 1492TEST(MemorySanitizer, mmap) { 1493 const int size = 4096; 1494 void *p1, *p2; 1495 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1496 __msan_poison(p1, size); 1497 munmap(p1, size); 1498 for (int i = 0; i < 1000; i++) { 1499 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1500 if (p2 == p1) 1501 break; 1502 else 1503 munmap(p2, size); 1504 } 1505 if (p1 == p2) { 1506 EXPECT_NOT_POISONED(*(char*)p2); 1507 munmap(p2, size); 1508 } 1509} 1510 1511// FIXME: enable and add ecvt. 1512// FIXME: check why msandr does nt handle fcvt. 1513TEST(MemorySanitizer, fcvt) { 1514 int a, b; 1515 break_optimization(&a); 1516 break_optimization(&b); 1517 EXPECT_POISONED(a); 1518 EXPECT_POISONED(b); 1519 char *str = fcvt(12345.6789, 10, &a, &b); 1520 EXPECT_NOT_POISONED(a); 1521 EXPECT_NOT_POISONED(b); 1522} 1523 1524TEST(MemorySanitizer, frexp) { 1525 int x; 1526 x = *GetPoisoned<int>(); 1527 double r = frexp(1.1, &x); 1528 EXPECT_NOT_POISONED(r); 1529 EXPECT_NOT_POISONED(x); 1530 1531 x = *GetPoisoned<int>(); 1532 float rf = frexpf(1.1, &x); 1533 EXPECT_NOT_POISONED(rf); 1534 EXPECT_NOT_POISONED(x); 1535 1536 x = *GetPoisoned<int>(); 1537 double rl = frexpl(1.1, &x); 1538 EXPECT_NOT_POISONED(rl); 1539 EXPECT_NOT_POISONED(x); 1540} 1541 1542namespace { 1543 1544static int cnt; 1545 1546void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1547 assert(signo == SIGPROF); 1548 assert(si); 1549 EXPECT_NOT_POISONED(si->si_errno); 1550 EXPECT_NOT_POISONED(si->si_pid); 1551#if __linux__ 1552# if defined(__x86_64__) 1553 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1554# elif defined(__i386__) 1555 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1556# endif 1557#endif 1558 ++cnt; 1559} 1560 1561TEST(MemorySanitizer, sigaction) { 1562 struct sigaction act = {}; 1563 struct sigaction oldact = {}; 1564 struct sigaction origact = {}; 1565 1566 sigaction(SIGPROF, 0, &origact); 1567 1568 act.sa_flags |= SA_SIGINFO; 1569 act.sa_sigaction = &SigactionHandler; 1570 sigaction(SIGPROF, &act, 0); 1571 1572 kill(getpid(), SIGPROF); 1573 1574 act.sa_flags &= ~SA_SIGINFO; 1575 act.sa_handler = SIG_DFL; 1576 sigaction(SIGPROF, &act, 0); 1577 1578 act.sa_flags &= ~SA_SIGINFO; 1579 act.sa_handler = SIG_IGN; 1580 sigaction(SIGPROF, &act, &oldact); 1581 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1582 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1583 kill(getpid(), SIGPROF); 1584 1585 act.sa_flags |= SA_SIGINFO; 1586 act.sa_sigaction = &SigactionHandler; 1587 sigaction(SIGPROF, &act, &oldact); 1588 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1589 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1590 kill(getpid(), SIGPROF); 1591 1592 act.sa_flags &= ~SA_SIGINFO; 1593 act.sa_handler = SIG_DFL; 1594 sigaction(SIGPROF, &act, &oldact); 1595 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1596 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1597 EXPECT_EQ(2, cnt); 1598 1599 sigaction(SIGPROF, &origact, 0); 1600} 1601 1602} // namespace 1603 1604struct StructWithDtor { 1605 ~StructWithDtor(); 1606}; 1607 1608NOINLINE StructWithDtor::~StructWithDtor() { 1609 break_optimization(0); 1610} 1611 1612TEST(MemorySanitizer, Invoke) { 1613 StructWithDtor s; // Will cause the calls to become invokes. 1614 EXPECT_NOT_POISONED(0); 1615 EXPECT_POISONED(*GetPoisoned<int>()); 1616 EXPECT_NOT_POISONED(0); 1617 EXPECT_POISONED(*GetPoisoned<int>()); 1618 EXPECT_POISONED(ReturnPoisoned<S4>()); 1619} 1620 1621TEST(MemorySanitizer, ptrtoint) { 1622 // Test that shadow is propagated through pointer-to-integer conversion. 1623 void* p = (void*)0xABCD; 1624 __msan_poison(((char*)&p) + 1, sizeof(p)); 1625 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1626 1627 void* q = (void*)0xABCD; 1628 __msan_poison(&q, sizeof(q) - 1); 1629 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1630} 1631 1632static void vaargsfn2(int guard, ...) { 1633 va_list vl; 1634 va_start(vl, guard); 1635 EXPECT_NOT_POISONED(va_arg(vl, int)); 1636 EXPECT_NOT_POISONED(va_arg(vl, int)); 1637 EXPECT_NOT_POISONED(va_arg(vl, int)); 1638 EXPECT_POISONED(va_arg(vl, double)); 1639 va_end(vl); 1640} 1641 1642static void vaargsfn(int guard, ...) { 1643 va_list vl; 1644 va_start(vl, guard); 1645 EXPECT_NOT_POISONED(va_arg(vl, int)); 1646 EXPECT_POISONED(va_arg(vl, int)); 1647 // The following call will overwrite __msan_param_tls. 1648 // Checks after it test that arg shadow was somehow saved across the call. 1649 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1650 EXPECT_NOT_POISONED(va_arg(vl, int)); 1651 EXPECT_POISONED(va_arg(vl, int)); 1652 va_end(vl); 1653} 1654 1655TEST(MemorySanitizer, VAArgTest) { 1656 int* x = GetPoisoned<int>(); 1657 int* y = GetPoisoned<int>(4); 1658 vaargsfn(1, 13, *x, 42, *y); 1659} 1660 1661static void vaargsfn_many(int guard, ...) { 1662 va_list vl; 1663 va_start(vl, guard); 1664 EXPECT_NOT_POISONED(va_arg(vl, int)); 1665 EXPECT_POISONED(va_arg(vl, int)); 1666 EXPECT_NOT_POISONED(va_arg(vl, int)); 1667 EXPECT_NOT_POISONED(va_arg(vl, int)); 1668 EXPECT_NOT_POISONED(va_arg(vl, int)); 1669 EXPECT_NOT_POISONED(va_arg(vl, int)); 1670 EXPECT_NOT_POISONED(va_arg(vl, int)); 1671 EXPECT_NOT_POISONED(va_arg(vl, int)); 1672 EXPECT_NOT_POISONED(va_arg(vl, int)); 1673 EXPECT_POISONED(va_arg(vl, int)); 1674 va_end(vl); 1675} 1676 1677TEST(MemorySanitizer, VAArgManyTest) { 1678 int* x = GetPoisoned<int>(); 1679 int* y = GetPoisoned<int>(4); 1680 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1681} 1682 1683static void vaargsfn_pass2(va_list vl) { 1684 EXPECT_NOT_POISONED(va_arg(vl, int)); 1685 EXPECT_NOT_POISONED(va_arg(vl, int)); 1686 EXPECT_POISONED(va_arg(vl, int)); 1687} 1688 1689static void vaargsfn_pass(int guard, ...) { 1690 va_list vl; 1691 va_start(vl, guard); 1692 EXPECT_POISONED(va_arg(vl, int)); 1693 vaargsfn_pass2(vl); 1694 va_end(vl); 1695} 1696 1697TEST(MemorySanitizer, VAArgPass) { 1698 int* x = GetPoisoned<int>(); 1699 int* y = GetPoisoned<int>(4); 1700 vaargsfn_pass(1, *x, 2, 3, *y); 1701} 1702 1703static void vaargsfn_copy2(va_list vl) { 1704 EXPECT_NOT_POISONED(va_arg(vl, int)); 1705 EXPECT_POISONED(va_arg(vl, int)); 1706} 1707 1708static void vaargsfn_copy(int guard, ...) { 1709 va_list vl; 1710 va_start(vl, guard); 1711 EXPECT_NOT_POISONED(va_arg(vl, int)); 1712 EXPECT_POISONED(va_arg(vl, int)); 1713 va_list vl2; 1714 va_copy(vl2, vl); 1715 vaargsfn_copy2(vl2); 1716 EXPECT_NOT_POISONED(va_arg(vl, int)); 1717 EXPECT_POISONED(va_arg(vl, int)); 1718 va_end(vl); 1719} 1720 1721TEST(MemorySanitizer, VAArgCopy) { 1722 int* x = GetPoisoned<int>(); 1723 int* y = GetPoisoned<int>(4); 1724 vaargsfn_copy(1, 2, *x, 3, *y); 1725} 1726 1727static void vaargsfn_ptr(int guard, ...) { 1728 va_list vl; 1729 va_start(vl, guard); 1730 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1731 EXPECT_POISONED(va_arg(vl, int*)); 1732 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1733 EXPECT_POISONED(va_arg(vl, double*)); 1734 va_end(vl); 1735} 1736 1737TEST(MemorySanitizer, VAArgPtr) { 1738 int** x = GetPoisoned<int*>(); 1739 double** y = GetPoisoned<double*>(8); 1740 int z; 1741 vaargsfn_ptr(1, &z, *x, &z, *y); 1742} 1743 1744static void vaargsfn_overflow(int guard, ...) { 1745 va_list vl; 1746 va_start(vl, guard); 1747 EXPECT_NOT_POISONED(va_arg(vl, int)); 1748 EXPECT_NOT_POISONED(va_arg(vl, int)); 1749 EXPECT_POISONED(va_arg(vl, int)); 1750 EXPECT_NOT_POISONED(va_arg(vl, int)); 1751 EXPECT_NOT_POISONED(va_arg(vl, int)); 1752 EXPECT_NOT_POISONED(va_arg(vl, int)); 1753 1754 EXPECT_NOT_POISONED(va_arg(vl, double)); 1755 EXPECT_NOT_POISONED(va_arg(vl, double)); 1756 EXPECT_NOT_POISONED(va_arg(vl, double)); 1757 EXPECT_POISONED(va_arg(vl, double)); 1758 EXPECT_NOT_POISONED(va_arg(vl, double)); 1759 EXPECT_POISONED(va_arg(vl, int*)); 1760 EXPECT_NOT_POISONED(va_arg(vl, double)); 1761 EXPECT_NOT_POISONED(va_arg(vl, double)); 1762 1763 EXPECT_POISONED(va_arg(vl, int)); 1764 EXPECT_POISONED(va_arg(vl, double)); 1765 EXPECT_POISONED(va_arg(vl, int*)); 1766 1767 EXPECT_NOT_POISONED(va_arg(vl, int)); 1768 EXPECT_NOT_POISONED(va_arg(vl, double)); 1769 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1770 1771 EXPECT_POISONED(va_arg(vl, int)); 1772 EXPECT_POISONED(va_arg(vl, double)); 1773 EXPECT_POISONED(va_arg(vl, int*)); 1774 1775 va_end(vl); 1776} 1777 1778TEST(MemorySanitizer, VAArgOverflow) { 1779 int* x = GetPoisoned<int>(); 1780 double* y = GetPoisoned<double>(8); 1781 int** p = GetPoisoned<int*>(16); 1782 int z; 1783 vaargsfn_overflow(1, 1784 1, 2, *x, 4, 5, 6, 1785 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1786 // the following args will overflow for sure 1787 *x, *y, *p, 1788 7, 9.9, &z, 1789 *x, *y, *p); 1790} 1791 1792static void vaargsfn_tlsoverwrite2(int guard, ...) { 1793 va_list vl; 1794 va_start(vl, guard); 1795 for (int i = 0; i < 20; ++i) 1796 EXPECT_NOT_POISONED(va_arg(vl, int)); 1797 va_end(vl); 1798} 1799 1800static void vaargsfn_tlsoverwrite(int guard, ...) { 1801 // This call will overwrite TLS contents unless it's backed up somewhere. 1802 vaargsfn_tlsoverwrite2(2, 1803 42, 42, 42, 42, 42, 1804 42, 42, 42, 42, 42, 1805 42, 42, 42, 42, 42, 1806 42, 42, 42, 42, 42); // 20x 1807 va_list vl; 1808 va_start(vl, guard); 1809 for (int i = 0; i < 20; ++i) 1810 EXPECT_POISONED(va_arg(vl, int)); 1811 va_end(vl); 1812} 1813 1814TEST(MemorySanitizer, VAArgTLSOverwrite) { 1815 int* x = GetPoisoned<int>(); 1816 vaargsfn_tlsoverwrite(1, 1817 *x, *x, *x, *x, *x, 1818 *x, *x, *x, *x, *x, 1819 *x, *x, *x, *x, *x, 1820 *x, *x, *x, *x, *x); // 20x 1821 1822} 1823 1824struct StructByVal { 1825 int a, b, c, d, e, f; 1826}; 1827 1828NOINLINE void StructByValTestFunc(struct StructByVal s) { 1829 EXPECT_NOT_POISONED(s.a); 1830 EXPECT_POISONED(s.b); 1831 EXPECT_NOT_POISONED(s.c); 1832 EXPECT_POISONED(s.d); 1833 EXPECT_NOT_POISONED(s.e); 1834 EXPECT_POISONED(s.f); 1835} 1836 1837NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1838 StructByValTestFunc(s); 1839} 1840 1841NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1842 StructByValTestFunc(s); 1843} 1844 1845TEST(MemorySanitizer, StructByVal) { 1846 // Large aggregates are passed as "byval" pointer argument in LLVM. 1847 struct StructByVal s; 1848 s.a = 1; 1849 s.b = *GetPoisoned<int>(); 1850 s.c = 2; 1851 s.d = *GetPoisoned<int>(); 1852 s.e = 3; 1853 s.f = *GetPoisoned<int>(); 1854 StructByValTestFunc(s); 1855 StructByValTestFunc1(s); 1856 StructByValTestFunc2(0, s); 1857} 1858 1859 1860#if MSAN_HAS_M128 1861NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1862NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1863TEST(MemorySanitizer, m128) { 1864 __m128i a = _mm_set1_epi16(0x1234); 1865 __m128i b = _mm_set1_epi16(0x7890); 1866 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1867 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1868} 1869// FIXME: add more tests for __m128i. 1870#endif // MSAN_HAS_M128 1871 1872// We should not complain when copying this poisoned hole. 1873struct StructWithHole { 1874 U4 a; 1875 // 4-byte hole. 1876 U8 b; 1877}; 1878 1879NOINLINE StructWithHole ReturnStructWithHole() { 1880 StructWithHole res; 1881 __msan_poison(&res, sizeof(res)); 1882 res.a = 1; 1883 res.b = 2; 1884 return res; 1885} 1886 1887TEST(MemorySanitizer, StructWithHole) { 1888 StructWithHole a = ReturnStructWithHole(); 1889 break_optimization(&a); 1890} 1891 1892template <class T> 1893NOINLINE T ReturnStruct() { 1894 T res; 1895 __msan_poison(&res, sizeof(res)); 1896 res.a = 1; 1897 return res; 1898} 1899 1900template <class T> 1901NOINLINE void TestReturnStruct() { 1902 T s1 = ReturnStruct<T>(); 1903 EXPECT_NOT_POISONED(s1.a); 1904 EXPECT_POISONED(s1.b); 1905} 1906 1907struct SSS1 { 1908 int a, b, c; 1909}; 1910struct SSS2 { 1911 int b, a, c; 1912}; 1913struct SSS3 { 1914 int b, c, a; 1915}; 1916struct SSS4 { 1917 int c, b, a; 1918}; 1919 1920struct SSS5 { 1921 int a; 1922 float b; 1923}; 1924struct SSS6 { 1925 int a; 1926 double b; 1927}; 1928struct SSS7 { 1929 S8 b; 1930 int a; 1931}; 1932struct SSS8 { 1933 S2 b; 1934 S8 a; 1935}; 1936 1937TEST(MemorySanitizer, IntStruct3) { 1938 TestReturnStruct<SSS1>(); 1939 TestReturnStruct<SSS2>(); 1940 TestReturnStruct<SSS3>(); 1941 TestReturnStruct<SSS4>(); 1942 TestReturnStruct<SSS5>(); 1943 TestReturnStruct<SSS6>(); 1944 TestReturnStruct<SSS7>(); 1945 TestReturnStruct<SSS8>(); 1946} 1947 1948struct LongStruct { 1949 U1 a1, b1; 1950 U2 a2, b2; 1951 U4 a4, b4; 1952 U8 a8, b8; 1953}; 1954 1955NOINLINE LongStruct ReturnLongStruct1() { 1956 LongStruct res; 1957 __msan_poison(&res, sizeof(res)); 1958 res.a1 = res.a2 = res.a4 = res.a8 = 111; 1959 // leaves b1, .., b8 poisoned. 1960 return res; 1961} 1962 1963NOINLINE LongStruct ReturnLongStruct2() { 1964 LongStruct res; 1965 __msan_poison(&res, sizeof(res)); 1966 res.b1 = res.b2 = res.b4 = res.b8 = 111; 1967 // leaves a1, .., a8 poisoned. 1968 return res; 1969} 1970 1971TEST(MemorySanitizer, LongStruct) { 1972 LongStruct s1 = ReturnLongStruct1(); 1973 __msan_print_shadow(&s1, sizeof(s1)); 1974 EXPECT_NOT_POISONED(s1.a1); 1975 EXPECT_NOT_POISONED(s1.a2); 1976 EXPECT_NOT_POISONED(s1.a4); 1977 EXPECT_NOT_POISONED(s1.a8); 1978 1979 EXPECT_POISONED(s1.b1); 1980 EXPECT_POISONED(s1.b2); 1981 EXPECT_POISONED(s1.b4); 1982 EXPECT_POISONED(s1.b8); 1983 1984 LongStruct s2 = ReturnLongStruct2(); 1985 __msan_print_shadow(&s2, sizeof(s2)); 1986 EXPECT_NOT_POISONED(s2.b1); 1987 EXPECT_NOT_POISONED(s2.b2); 1988 EXPECT_NOT_POISONED(s2.b4); 1989 EXPECT_NOT_POISONED(s2.b8); 1990 1991 EXPECT_POISONED(s2.a1); 1992 EXPECT_POISONED(s2.a2); 1993 EXPECT_POISONED(s2.a4); 1994 EXPECT_POISONED(s2.a8); 1995} 1996 1997TEST(MemorySanitizer, getrlimit) { 1998 struct rlimit limit; 1999 __msan_poison(&limit, sizeof(limit)); 2000 int result = getrlimit(RLIMIT_DATA, &limit); 2001 assert(result == 0); 2002 EXPECT_NOT_POISONED(limit.rlim_cur); 2003 EXPECT_NOT_POISONED(limit.rlim_max); 2004} 2005 2006TEST(MemorySanitizer, getrusage) { 2007 struct rusage usage; 2008 __msan_poison(&usage, sizeof(usage)); 2009 int result = getrusage(RUSAGE_SELF, &usage); 2010 assert(result == 0); 2011 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2012 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2013 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2014 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2015 EXPECT_NOT_POISONED(usage.ru_maxrss); 2016 EXPECT_NOT_POISONED(usage.ru_minflt); 2017 EXPECT_NOT_POISONED(usage.ru_majflt); 2018 EXPECT_NOT_POISONED(usage.ru_inblock); 2019 EXPECT_NOT_POISONED(usage.ru_oublock); 2020 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2021 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2022} 2023 2024#ifdef __GLIBC__ 2025extern char *program_invocation_name; 2026#else // __GLIBC__ 2027# error "TODO: port this" 2028#endif 2029 2030static void dladdr_testfn() {} 2031 2032TEST(MemorySanitizer, dladdr) { 2033 Dl_info info; 2034 __msan_poison(&info, sizeof(info)); 2035 int result = dladdr((const void*)dladdr_testfn, &info); 2036 assert(result != 0); 2037 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2038 if (info.dli_fname) 2039 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2040 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2041 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2042 if (info.dli_sname) 2043 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2044 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2045} 2046 2047#ifndef MSAN_TEST_DISABLE_DLOPEN 2048 2049static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2050 (*(int *)data)++; 2051 EXPECT_NOT_POISONED(info->dlpi_addr); 2052 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2053 EXPECT_NOT_POISONED(info->dlpi_phnum); 2054 for (int i = 0; i < info->dlpi_phnum; ++i) 2055 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2056 return 0; 2057} 2058 2059// Compute the path to our loadable DSO. We assume it's in the same 2060// directory. Only use string routines that we intercept so far to do this. 2061static int PathToLoadable(char *buf, size_t sz) { 2062 const char *basename = "libmsan_loadable.x86_64.so"; 2063 char *argv0 = program_invocation_name; 2064 char *last_slash = strrchr(argv0, '/'); 2065 assert(last_slash); 2066 int res = 2067 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2068 return res < sz ? 0 : res; 2069} 2070 2071TEST(MemorySanitizer, dl_iterate_phdr) { 2072 char path[4096]; 2073 int res = PathToLoadable(path, sizeof(path)); 2074 assert(!res); 2075 2076 // Having at least one dlopen'ed library in the process makes this more 2077 // entertaining. 2078 void *lib = dlopen(path, RTLD_LAZY); 2079 ASSERT_NE((void*)0, lib); 2080 2081 int count = 0; 2082 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2083 assert(count > 0); 2084 2085 dlclose(lib); 2086} 2087 2088 2089TEST(MemorySanitizer, dlopen) { 2090 char path[4096]; 2091 int res = PathToLoadable(path, sizeof(path)); 2092 assert(!res); 2093 2094 // We need to clear shadow for globals when doing dlopen. In order to test 2095 // this, we have to poison the shadow for the DSO before we load it. In 2096 // general this is difficult, but the loader tends to reload things in the 2097 // same place, so we open, close, and then reopen. The global should always 2098 // start out clean after dlopen. 2099 for (int i = 0; i < 2; i++) { 2100 void *lib = dlopen(path, RTLD_LAZY); 2101 if (lib == NULL) { 2102 printf("dlerror: %s\n", dlerror()); 2103 assert(lib != NULL); 2104 } 2105 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2106 assert(get_dso_global); 2107 void **dso_global = get_dso_global(); 2108 EXPECT_NOT_POISONED(*dso_global); 2109 __msan_poison(dso_global, sizeof(*dso_global)); 2110 EXPECT_POISONED(*dso_global); 2111 dlclose(lib); 2112 } 2113} 2114 2115// Regression test for a crash in dlopen() interceptor. 2116TEST(MemorySanitizer, dlopenFailed) { 2117 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2118 void *lib = dlopen(path, RTLD_LAZY); 2119 ASSERT_EQ(0, lib); 2120} 2121 2122#endif // MSAN_TEST_DISABLE_DLOPEN 2123 2124TEST(MemorySanitizer, sched_getaffinity) { 2125 cpu_set_t mask; 2126 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2127 ASSERT_EQ(0, res); 2128 EXPECT_NOT_POISONED(mask); 2129} 2130 2131TEST(MemorySanitizer, scanf) { 2132 const char *input = "42 hello"; 2133 int* d = new int; 2134 char* s = new char[7]; 2135 int res = sscanf(input, "%d %5s", d, s); 2136 printf("res %d\n", res); 2137 assert(res == 2); 2138 EXPECT_NOT_POISONED(*d); 2139 EXPECT_NOT_POISONED(s[0]); 2140 EXPECT_NOT_POISONED(s[1]); 2141 EXPECT_NOT_POISONED(s[2]); 2142 EXPECT_NOT_POISONED(s[3]); 2143 EXPECT_NOT_POISONED(s[4]); 2144 EXPECT_NOT_POISONED(s[5]); 2145 EXPECT_POISONED(s[6]); 2146 delete s; 2147 delete d; 2148} 2149 2150static void *SimpleThread_threadfn(void* data) { 2151 return new int; 2152} 2153 2154TEST(MemorySanitizer, SimpleThread) { 2155 pthread_t t; 2156 void *p; 2157 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2158 assert(!res); 2159 EXPECT_NOT_POISONED(t); 2160 res = pthread_join(t, &p); 2161 assert(!res); 2162 EXPECT_NOT_POISONED(p); 2163 delete (int*)p; 2164} 2165 2166static void *SmallStackThread_threadfn(void* data) { 2167 return 0; 2168} 2169 2170TEST(MemorySanitizer, SmallStackThread) { 2171 pthread_attr_t attr; 2172 pthread_t t; 2173 void *p; 2174 int res; 2175 res = pthread_attr_init(&attr); 2176 ASSERT_EQ(0, res); 2177 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2178 ASSERT_EQ(0, res); 2179 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2180 ASSERT_EQ(0, res); 2181 res = pthread_join(t, &p); 2182 ASSERT_EQ(0, res); 2183 res = pthread_attr_destroy(&attr); 2184 ASSERT_EQ(0, res); 2185} 2186 2187TEST(MemorySanitizer, PreAllocatedStackThread) { 2188 pthread_attr_t attr; 2189 pthread_t t; 2190 int res; 2191 res = pthread_attr_init(&attr); 2192 ASSERT_EQ(0, res); 2193 void *stack; 2194 const size_t kStackSize = 64 * 1024; 2195 res = posix_memalign(&stack, 4096, kStackSize); 2196 ASSERT_EQ(0, res); 2197 res = pthread_attr_setstack(&attr, stack, kStackSize); 2198 ASSERT_EQ(0, res); 2199 // A small self-allocated stack can not be extended by the tool. 2200 // In this case pthread_create is expected to fail. 2201 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2202 EXPECT_NE(0, res); 2203 res = pthread_attr_destroy(&attr); 2204 ASSERT_EQ(0, res); 2205} 2206 2207TEST(MemorySanitizer, pthread_getschedparam) { 2208 int policy; 2209 struct sched_param param; 2210 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2211 ASSERT_EQ(0, res); 2212 EXPECT_NOT_POISONED(policy); 2213 EXPECT_NOT_POISONED(param.sched_priority); 2214} 2215 2216TEST(MemorySanitizer, pthread_key_create) { 2217 pthread_key_t key; 2218 int res = pthread_key_create(&key, NULL); 2219 assert(!res); 2220 EXPECT_NOT_POISONED(key); 2221 res = pthread_key_delete(key); 2222 assert(!res); 2223} 2224 2225TEST(MemorySanitizer, posix_memalign) { 2226 void *p; 2227 EXPECT_POISONED(p); 2228 int res = posix_memalign(&p, 4096, 13); 2229 ASSERT_EQ(0, res); 2230 EXPECT_NOT_POISONED(p); 2231 free(p); 2232} 2233 2234TEST(MemorySanitizer, inet_pton) { 2235 const char *s = "1:0:0:0:0:0:0:8"; 2236 unsigned char buf[sizeof(struct in6_addr)]; 2237 int res = inet_pton(AF_INET6, s, buf); 2238 ASSERT_EQ(1, res); 2239 EXPECT_NOT_POISONED(buf[0]); 2240 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2241 2242 char s_out[INET6_ADDRSTRLEN]; 2243 EXPECT_POISONED(s_out[3]); 2244 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2245 ASSERT_NE((void*)0, q); 2246 EXPECT_NOT_POISONED(s_out[3]); 2247} 2248 2249TEST(MemorySanitizer, inet_aton) { 2250 const char *s = "127.0.0.1"; 2251 struct in_addr in[2]; 2252 int res = inet_aton(s, in); 2253 ASSERT_NE(0, res); 2254 EXPECT_NOT_POISONED(in[0]); 2255 EXPECT_POISONED(*(char *)(in + 1)); 2256} 2257 2258TEST(MemorySanitizer, uname) { 2259 struct utsname u; 2260 int res = uname(&u); 2261 assert(!res); 2262 EXPECT_NOT_POISONED(strlen(u.sysname)); 2263 EXPECT_NOT_POISONED(strlen(u.nodename)); 2264 EXPECT_NOT_POISONED(strlen(u.release)); 2265 EXPECT_NOT_POISONED(strlen(u.version)); 2266 EXPECT_NOT_POISONED(strlen(u.machine)); 2267} 2268 2269TEST(MemorySanitizer, gethostname) { 2270 char buf[100]; 2271 int res = gethostname(buf, 100); 2272 assert(!res); 2273 EXPECT_NOT_POISONED(strlen(buf)); 2274} 2275 2276TEST(MemorySanitizer, sysinfo) { 2277 struct sysinfo info; 2278 int res = sysinfo(&info); 2279 assert(!res); 2280 EXPECT_NOT_POISONED(info); 2281} 2282 2283TEST(MemorySanitizer, getpwuid) { 2284 struct passwd *p = getpwuid(0); // root 2285 assert(p); 2286 EXPECT_NOT_POISONED(p->pw_name); 2287 assert(p->pw_name); 2288 EXPECT_NOT_POISONED(p->pw_name[0]); 2289 EXPECT_NOT_POISONED(p->pw_uid); 2290 assert(p->pw_uid == 0); 2291} 2292 2293TEST(MemorySanitizer, getpwnam_r) { 2294 struct passwd pwd; 2295 struct passwd *pwdres; 2296 char buf[10000]; 2297 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2298 assert(!res); 2299 EXPECT_NOT_POISONED(pwd.pw_name); 2300 assert(pwd.pw_name); 2301 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2302 EXPECT_NOT_POISONED(pwd.pw_uid); 2303 assert(pwd.pw_uid == 0); 2304} 2305 2306TEST(MemorySanitizer, getpwnam_r_positive) { 2307 struct passwd pwd; 2308 struct passwd *pwdres; 2309 char s[5]; 2310 strncpy(s, "abcd", 5); 2311 __msan_poison(s, 5); 2312 char buf[10000]; 2313 int res; 2314 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2315} 2316 2317TEST(MemorySanitizer, getgrnam_r) { 2318 struct group grp; 2319 struct group *grpres; 2320 char buf[10000]; 2321 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2322 assert(!res); 2323 EXPECT_NOT_POISONED(grp.gr_name); 2324 assert(grp.gr_name); 2325 EXPECT_NOT_POISONED(grp.gr_name[0]); 2326 EXPECT_NOT_POISONED(grp.gr_gid); 2327} 2328 2329TEST(MemorySanitizer, getgroups) { 2330 int n = getgroups(0, 0); 2331 gid_t *gids = new gid_t[n]; 2332 int res = getgroups(n, gids); 2333 ASSERT_EQ(n, res); 2334 for (int i = 0; i < n; ++i) 2335 EXPECT_NOT_POISONED(gids[i]); 2336} 2337 2338template<class T> 2339static bool applySlt(T value, T shadow) { 2340 __msan_partial_poison(&value, &shadow, sizeof(T)); 2341 volatile bool zzz = true; 2342 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2343 // a shift-and-trunc to get at the highest bit. 2344 volatile bool v = value < 0 || zzz; 2345 return v; 2346} 2347 2348TEST(MemorySanitizer, SignedCompareWithZero) { 2349 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2350 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2351 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2352 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2353 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2354 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2355} 2356 2357template <class T, class S> 2358static T poisoned(T Va, S Sa) { 2359 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2360 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2361 T a; 2362 a = Va; 2363 __msan_partial_poison(&a, &Sa, sizeof(T)); 2364 return a; 2365} 2366 2367TEST(MemorySanitizer, ICmpRelational) { 2368 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2369 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2370 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2371 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2372 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2373 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2374 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2375 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2376 poisoned(-1, 0xFFFFFFFFU)); 2377 2378 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2379 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2380 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2381 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2382 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2383 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2384 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2385 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2386 poisoned(-1, 0xFFFFFFFFU)); 2387 2388 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2389 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2390 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2391 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2392 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2393 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2394 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2395 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2396 poisoned(-1, 0xFFFFFFFFU)); 2397 2398 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2399 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2400 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2401 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2402 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2403 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2404 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2405 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2406 poisoned(-1, 0xFFFFFFFFU)); 2407 2408 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2409 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2410 2411 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2412} 2413 2414#if MSAN_HAS_M128 2415TEST(MemorySanitizer, ICmpVectorRelational) { 2416 EXPECT_NOT_POISONED( 2417 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2418 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2419 EXPECT_NOT_POISONED( 2420 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2421 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2422 EXPECT_POISONED( 2423 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2424 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2425 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2426 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2427} 2428#endif 2429 2430// Volatile bitfield store is implemented as load-mask-store 2431// Test that we don't warn on the store of (uninitialized) padding. 2432struct VolatileBitfieldStruct { 2433 volatile unsigned x : 1; 2434 unsigned y : 1; 2435}; 2436 2437TEST(MemorySanitizer, VolatileBitfield) { 2438 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2439 S->x = 1; 2440 EXPECT_NOT_POISONED((unsigned)S->x); 2441 EXPECT_POISONED((unsigned)S->y); 2442} 2443 2444TEST(MemorySanitizer, UnalignedLoad) { 2445 char x[32]; 2446 memset(x + 8, 0, 16); 2447 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2448 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2449 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2450 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2451 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2452 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2453 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2454 2455 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2456 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2457 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2458 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2459 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2460 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2461 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2462 2463 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2464 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2465 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2466 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2467 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2468 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2469 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2470 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2471 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2472} 2473 2474TEST(MemorySanitizer, UnalignedStore16) { 2475 char x[5]; 2476 U2 y = 0; 2477 __msan_poison(&y, 1); 2478 __sanitizer_unaligned_store16(x + 1, y); 2479 EXPECT_POISONED(x[0]); 2480 EXPECT_POISONED(x[1]); 2481 EXPECT_NOT_POISONED(x[2]); 2482 EXPECT_POISONED(x[3]); 2483 EXPECT_POISONED(x[4]); 2484} 2485 2486TEST(MemorySanitizer, UnalignedStore32) { 2487 char x[8]; 2488 U4 y4 = 0; 2489 __msan_poison(&y4, 2); 2490 __sanitizer_unaligned_store32(x+3, y4); 2491 EXPECT_POISONED(x[0]); 2492 EXPECT_POISONED(x[1]); 2493 EXPECT_POISONED(x[2]); 2494 EXPECT_POISONED(x[3]); 2495 EXPECT_POISONED(x[4]); 2496 EXPECT_NOT_POISONED(x[5]); 2497 EXPECT_NOT_POISONED(x[6]); 2498 EXPECT_POISONED(x[7]); 2499} 2500 2501TEST(MemorySanitizer, UnalignedStore64) { 2502 char x[16]; 2503 U8 y = 0; 2504 __msan_poison(&y, 3); 2505 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2506 __sanitizer_unaligned_store64(x+3, y); 2507 EXPECT_POISONED(x[0]); 2508 EXPECT_POISONED(x[1]); 2509 EXPECT_POISONED(x[2]); 2510 EXPECT_POISONED(x[3]); 2511 EXPECT_POISONED(x[4]); 2512 EXPECT_POISONED(x[5]); 2513 EXPECT_NOT_POISONED(x[6]); 2514 EXPECT_NOT_POISONED(x[7]); 2515 EXPECT_NOT_POISONED(x[8]); 2516 EXPECT_POISONED(x[9]); 2517 EXPECT_NOT_POISONED(x[10]); 2518 EXPECT_POISONED(x[11]); 2519} 2520 2521TEST(MemorySanitizerDr, StoreInDSOTest) { 2522 if (!__msan_has_dynamic_component()) return; 2523 char* s = new char[10]; 2524 dso_memfill(s, 9); 2525 EXPECT_NOT_POISONED(s[5]); 2526 EXPECT_POISONED(s[9]); 2527} 2528 2529int return_poisoned_int() { 2530 return ReturnPoisoned<U8>(); 2531} 2532 2533TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2534 if (!__msan_has_dynamic_component()) return; 2535 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2536} 2537 2538NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2539 EXPECT_POISONED(x); 2540 EXPECT_POISONED(y); 2541 EXPECT_POISONED(z); 2542 return 0; 2543} 2544 2545static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2546 EXPECT_NOT_POISONED(x); 2547 EXPECT_NOT_POISONED(y); 2548 EXPECT_NOT_POISONED(z); 2549 return 0; 2550} 2551 2552TEST(MemorySanitizerDr, CallFromDSOTest) { 2553 if (!__msan_has_dynamic_component()) return; 2554 S8* x = GetPoisoned<S8>(); 2555 S8* y = GetPoisoned<S8>(); 2556 S8* z = GetPoisoned<S8>(); 2557 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2558 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2559} 2560 2561static void StackStoreInDSOFn(int* x, int* y) { 2562 EXPECT_NOT_POISONED(*x); 2563 EXPECT_NOT_POISONED(*y); 2564} 2565 2566TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2567 if (!__msan_has_dynamic_component()) return; 2568 dso_stack_store(StackStoreInDSOFn, 1); 2569} 2570 2571TEST(MemorySanitizerOrigins, SetGet) { 2572 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2573 if (!TrackingOrigins()) return; 2574 int x; 2575 __msan_set_origin(&x, sizeof(x), 1234); 2576 EXPECT_EQ(1234, __msan_get_origin(&x)); 2577 __msan_set_origin(&x, sizeof(x), 5678); 2578 EXPECT_EQ(5678, __msan_get_origin(&x)); 2579 __msan_set_origin(&x, sizeof(x), 0); 2580 EXPECT_EQ(0, __msan_get_origin(&x)); 2581} 2582 2583namespace { 2584struct S { 2585 U4 dummy; 2586 U2 a; 2587 U2 b; 2588}; 2589 2590// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2591TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2592 if (!TrackingOrigins()) return; 2593 2594 S s; 2595 U4 origin = rand(); // NOLINT 2596 s.a = *GetPoisonedO<U2>(0, origin); 2597 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2598 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2599 2600 s.b = 42; 2601 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2602 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2603} 2604} // namespace 2605 2606template<class T, class BinaryOp> 2607INLINE 2608void BinaryOpOriginTest(BinaryOp op) { 2609 U4 ox = rand(); //NOLINT 2610 U4 oy = rand(); //NOLINT 2611 T *x = GetPoisonedO<T>(0, ox, 0); 2612 T *y = GetPoisonedO<T>(1, oy, 0); 2613 T *z = GetPoisonedO<T>(2, 0, 0); 2614 2615 *z = op(*x, *y); 2616 U4 origin = __msan_get_origin(z); 2617 EXPECT_POISONED_O(*z, origin); 2618 EXPECT_EQ(true, origin == ox || origin == oy); 2619 2620 // y is poisoned, x is not. 2621 *x = 10101; 2622 *y = *GetPoisonedO<T>(1, oy); 2623 break_optimization(x); 2624 __msan_set_origin(z, sizeof(*z), 0); 2625 *z = op(*x, *y); 2626 EXPECT_POISONED_O(*z, oy); 2627 EXPECT_EQ(__msan_get_origin(z), oy); 2628 2629 // x is poisoned, y is not. 2630 *x = *GetPoisonedO<T>(0, ox); 2631 *y = 10101010; 2632 break_optimization(y); 2633 __msan_set_origin(z, sizeof(*z), 0); 2634 *z = op(*x, *y); 2635 EXPECT_POISONED_O(*z, ox); 2636 EXPECT_EQ(__msan_get_origin(z), ox); 2637} 2638 2639template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2640template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2641template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2642template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2643template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2644template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2645 2646TEST(MemorySanitizerOrigins, BinaryOp) { 2647 if (!TrackingOrigins()) return; 2648 BinaryOpOriginTest<S8>(XOR<S8>); 2649 BinaryOpOriginTest<U8>(ADD<U8>); 2650 BinaryOpOriginTest<S4>(SUB<S4>); 2651 BinaryOpOriginTest<S4>(MUL<S4>); 2652 BinaryOpOriginTest<U4>(OR<U4>); 2653 BinaryOpOriginTest<U4>(AND<U4>); 2654 BinaryOpOriginTest<double>(ADD<U4>); 2655 BinaryOpOriginTest<float>(ADD<S4>); 2656 BinaryOpOriginTest<double>(ADD<double>); 2657 BinaryOpOriginTest<float>(ADD<double>); 2658} 2659 2660TEST(MemorySanitizerOrigins, Unary) { 2661 if (!TrackingOrigins()) return; 2662 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2663 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2664 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2665 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2666 2667 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2668 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2669 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2670 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2671 2672 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2673 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2674 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2675 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2676 2677 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2678 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2679 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2680 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2681 2682 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2683 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2684} 2685 2686TEST(MemorySanitizerOrigins, EQ) { 2687 if (!TrackingOrigins()) return; 2688 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2689 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2690 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2691} 2692 2693TEST(MemorySanitizerOrigins, DIV) { 2694 if (!TrackingOrigins()) return; 2695 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2696 unsigned o = __LINE__; 2697 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2698} 2699 2700TEST(MemorySanitizerOrigins, SHIFT) { 2701 if (!TrackingOrigins()) return; 2702 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2703 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2704 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2705 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2706 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2707 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2708} 2709 2710template<class T, int N> 2711void MemCpyTest() { 2712 int ox = __LINE__; 2713 T *x = new T[N]; 2714 T *y = new T[N]; 2715 T *z = new T[N]; 2716 T *q = new T[N]; 2717 __msan_poison(x, N * sizeof(T)); 2718 __msan_set_origin(x, N * sizeof(T), ox); 2719 __msan_set_origin(y, N * sizeof(T), 777777); 2720 __msan_set_origin(z, N * sizeof(T), 888888); 2721 EXPECT_NOT_POISONED(x); 2722 memcpy(y, x, N * sizeof(T)); 2723 EXPECT_POISONED_O(y[0], ox); 2724 EXPECT_POISONED_O(y[N/2], ox); 2725 EXPECT_POISONED_O(y[N-1], ox); 2726 EXPECT_NOT_POISONED(x); 2727 void *res = mempcpy(q, x, N * sizeof(T)); 2728 ASSERT_EQ(q + N, res); 2729 EXPECT_POISONED_O(q[0], ox); 2730 EXPECT_POISONED_O(q[N/2], ox); 2731 EXPECT_POISONED_O(q[N-1], ox); 2732 EXPECT_NOT_POISONED(x); 2733 memmove(z, x, N * sizeof(T)); 2734 EXPECT_POISONED_O(z[0], ox); 2735 EXPECT_POISONED_O(z[N/2], ox); 2736 EXPECT_POISONED_O(z[N-1], ox); 2737} 2738 2739TEST(MemorySanitizerOrigins, LargeMemCpy) { 2740 if (!TrackingOrigins()) return; 2741 MemCpyTest<U1, 10000>(); 2742 MemCpyTest<U8, 10000>(); 2743} 2744 2745TEST(MemorySanitizerOrigins, SmallMemCpy) { 2746 if (!TrackingOrigins()) return; 2747 MemCpyTest<U8, 1>(); 2748 MemCpyTest<U8, 2>(); 2749 MemCpyTest<U8, 3>(); 2750} 2751 2752TEST(MemorySanitizerOrigins, Select) { 2753 if (!TrackingOrigins()) return; 2754 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2755 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2756 S4 x; 2757 break_optimization(&x); 2758 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2759 2760 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2761 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2762} 2763 2764extern "C" 2765NOINLINE char AllocaTO() { 2766 int ar[100]; 2767 break_optimization(ar); 2768 return ar[10]; 2769 // fprintf(stderr, "Descr: %s\n", 2770 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2771} 2772 2773TEST(MemorySanitizerOrigins, Alloca) { 2774 if (!TrackingOrigins()) return; 2775 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2776 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2777 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2778 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2779} 2780 2781// FIXME: replace with a lit-like test. 2782TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2783 if (!TrackingOrigins()) return; 2784 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2785} 2786 2787NOINLINE int RetvalOriginTest(U4 origin) { 2788 int *a = new int; 2789 break_optimization(a); 2790 __msan_set_origin(a, sizeof(*a), origin); 2791 int res = *a; 2792 delete a; 2793 return res; 2794} 2795 2796TEST(MemorySanitizerOrigins, Retval) { 2797 if (!TrackingOrigins()) return; 2798 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2799} 2800 2801NOINLINE void ParamOriginTest(int param, U4 origin) { 2802 EXPECT_POISONED_O(param, origin); 2803} 2804 2805TEST(MemorySanitizerOrigins, Param) { 2806 if (!TrackingOrigins()) return; 2807 int *a = new int; 2808 U4 origin = __LINE__; 2809 break_optimization(a); 2810 __msan_set_origin(a, sizeof(*a), origin); 2811 ParamOriginTest(*a, origin); 2812 delete a; 2813} 2814 2815TEST(MemorySanitizerOrigins, Invoke) { 2816 if (!TrackingOrigins()) return; 2817 StructWithDtor s; // Will cause the calls to become invokes. 2818 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2819} 2820 2821TEST(MemorySanitizerOrigins, strlen) { 2822 S8 alignment; 2823 break_optimization(&alignment); 2824 char x[4] = {'a', 'b', 0, 0}; 2825 __msan_poison(&x[2], 1); 2826 U4 origin = __LINE__; 2827 __msan_set_origin(x, sizeof(x), origin); 2828 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2829} 2830 2831TEST(MemorySanitizerOrigins, wcslen) { 2832 wchar_t w[3] = {'a', 'b', 0}; 2833 U4 origin = __LINE__; 2834 __msan_set_origin(w, sizeof(w), origin); 2835 __msan_poison(&w[2], sizeof(wchar_t)); 2836 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 2837} 2838 2839#if MSAN_HAS_M128 2840TEST(MemorySanitizerOrigins, StoreIntrinsic) { 2841 __m128 x, y; 2842 U4 origin = __LINE__; 2843 __msan_set_origin(&x, sizeof(x), origin); 2844 __msan_poison(&x, sizeof(x)); 2845 __builtin_ia32_storeups((float*)&y, x); 2846 EXPECT_POISONED_O(y, origin); 2847} 2848#endif 2849 2850NOINLINE void RecursiveMalloc(int depth) { 2851 static int count; 2852 count++; 2853 if ((count % (1024 * 1024)) == 0) 2854 printf("RecursiveMalloc: %d\n", count); 2855 int *x1 = new int; 2856 int *x2 = new int; 2857 break_optimization(x1); 2858 break_optimization(x2); 2859 if (depth > 0) { 2860 RecursiveMalloc(depth-1); 2861 RecursiveMalloc(depth-1); 2862 } 2863 delete x1; 2864 delete x2; 2865} 2866 2867TEST(MemorySanitizer, CallocOverflow) { 2868 size_t kArraySize = 4096; 2869 volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 2870 volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 2871 void *p = calloc(kArraySize, kArraySize2); // Should return 0. 2872 EXPECT_EQ(0L, Ident(p)); 2873} 2874 2875TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 2876 RecursiveMalloc(22); 2877} 2878 2879TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 2880 size_t sizes[] = {0, 20, 5000, 1<<20}; 2881 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 2882 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 2883 EXPECT_EQ(alloc_size, sizes[i]); 2884 } 2885} 2886 2887TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 2888 char *array = reinterpret_cast<char*>(malloc(100)); 2889 int *int_ptr = new int; 2890 2891 EXPECT_TRUE(__msan_get_ownership(array)); 2892 EXPECT_EQ(100, __msan_get_allocated_size(array)); 2893 2894 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 2895 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 2896 2897 void *wild_addr = reinterpret_cast<void*>(0x1); 2898 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 2899 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 2900 2901 EXPECT_FALSE(__msan_get_ownership(array + 50)); 2902 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 2903 2904 // NULL is a valid argument for GetAllocatedSize but is not owned. 2905 EXPECT_FALSE(__msan_get_ownership(NULL)); 2906 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 2907 2908 free(array); 2909 EXPECT_FALSE(__msan_get_ownership(array)); 2910 EXPECT_EQ(0, __msan_get_allocated_size(array)); 2911 2912 delete int_ptr; 2913} 2914