msan_test.cc revision 450eee655289a622ab9acf87d863f38991b184c9
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#include <malloc.h> 30 31#include <arpa/inet.h> 32#include <dlfcn.h> 33#include <grp.h> 34#include <unistd.h> 35#include <link.h> 36#include <limits.h> 37#include <sys/time.h> 38#include <poll.h> 39#include <sys/types.h> 40#include <sys/stat.h> 41#include <fcntl.h> 42#include <sys/resource.h> 43#include <sys/ioctl.h> 44#include <sys/statvfs.h> 45#include <sys/sysinfo.h> 46#include <sys/utsname.h> 47#include <sys/mman.h> 48#include <sys/vfs.h> 49#include <dirent.h> 50#include <pwd.h> 51#include <sys/socket.h> 52#include <netdb.h> 53#include <wordexp.h> 54#include <mntent.h> 55#include <netinet/ether.h> 56 57#if defined(__i386__) || defined(__x86_64__) 58# include <emmintrin.h> 59# define MSAN_HAS_M128 1 60#else 61# define MSAN_HAS_M128 0 62#endif 63 64static const int kPageSize = 4096; 65 66typedef unsigned char U1; 67typedef unsigned short U2; // NOLINT 68typedef unsigned int U4; 69typedef unsigned long long U8; // NOLINT 70typedef signed char S1; 71typedef signed short S2; // NOLINT 72typedef signed int S4; 73typedef signed long long S8; // NOLINT 74#define NOINLINE __attribute__((noinline)) 75#define INLINE __attribute__((always_inline)) 76 77static bool TrackingOrigins() { 78 S8 x; 79 __msan_set_origin(&x, sizeof(x), 0x1234); 80 U4 origin = __msan_get_origin(&x); 81 __msan_set_origin(&x, sizeof(x), 0); 82 return origin == 0x1234; 83} 84 85#define EXPECT_UMR(action) \ 86 do { \ 87 __msan_set_expect_umr(1); \ 88 action; \ 89 __msan_set_expect_umr(0); \ 90 } while (0) 91 92#define EXPECT_UMR_O(action, origin) \ 93 do { \ 94 __msan_set_expect_umr(1); \ 95 action; \ 96 __msan_set_expect_umr(0); \ 97 if (TrackingOrigins()) \ 98 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 99 } while (0) 100 101#define EXPECT_UMR_S(action, stack_origin) \ 102 do { \ 103 __msan_set_expect_umr(1); \ 104 action; \ 105 __msan_set_expect_umr(0); \ 106 U4 id = __msan_get_umr_origin(); \ 107 const char *str = __msan_get_origin_descr_if_stack(id); \ 108 if (!str || strcmp(str, stack_origin)) { \ 109 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 110 id, stack_origin, str); \ 111 EXPECT_EQ(1, 0); \ 112 } \ 113 } while (0) 114 115#define EXPECT_POISONED(x) ExpectPoisoned(x) 116 117template<typename T> 118void ExpectPoisoned(const T& t) { 119 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 120} 121 122#define EXPECT_POISONED_O(x, origin) \ 123 ExpectPoisonedWithOrigin(x, origin) 124 125template<typename T> 126void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 127 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 128 if (TrackingOrigins()) 129 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 130} 131 132#define EXPECT_POISONED_S(x, stack_origin) \ 133 ExpectPoisonedWithStackOrigin(x, stack_origin) 134 135template<typename T> 136void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 137 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 138 U4 id = __msan_get_origin((void*)&t); 139 const char *str = __msan_get_origin_descr_if_stack(id); 140 if (!str || strcmp(str, stack_origin)) { 141 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 142 id, stack_origin, str); 143 EXPECT_EQ(1, 0); 144 } 145} 146 147#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 148 149template<typename T> 150void ExpectNotPoisoned(const T& t) { 151 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 152} 153 154static U8 poisoned_array[100]; 155template<class T> 156T *GetPoisoned(int i = 0, T val = 0) { 157 T *res = (T*)&poisoned_array[i]; 158 *res = val; 159 __msan_poison(&poisoned_array[i], sizeof(T)); 160 return res; 161} 162 163template<class T> 164T *GetPoisonedO(int i, U4 origin, T val = 0) { 165 T *res = (T*)&poisoned_array[i]; 166 *res = val; 167 __msan_poison(&poisoned_array[i], sizeof(T)); 168 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 169 return res; 170} 171 172// This function returns its parameter but in such a way that compiler 173// can not prove it. 174template<class T> 175NOINLINE 176static T Ident(T t) { 177 volatile T ret = t; 178 return ret; 179} 180 181template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 182 183static volatile int g_one = 1; 184static volatile int g_zero = 0; 185static volatile int g_0 = 0; 186static volatile int g_1 = 1; 187 188S4 a_s4[100]; 189S8 a_s8[100]; 190 191// Check that malloc poisons memory. 192// A lot of tests below depend on this. 193TEST(MemorySanitizerSanity, PoisonInMalloc) { 194 int *x = (int*)malloc(sizeof(int)); 195 EXPECT_POISONED(*x); 196 free(x); 197} 198 199TEST(MemorySanitizer, NegativeTest1) { 200 S4 *x = GetPoisoned<S4>(); 201 if (g_one) 202 *x = 0; 203 EXPECT_NOT_POISONED(*x); 204} 205 206TEST(MemorySanitizer, PositiveTest1) { 207 // Load to store. 208 EXPECT_POISONED(*GetPoisoned<S1>()); 209 EXPECT_POISONED(*GetPoisoned<S2>()); 210 EXPECT_POISONED(*GetPoisoned<S4>()); 211 EXPECT_POISONED(*GetPoisoned<S8>()); 212 213 // S->S conversions. 214 EXPECT_POISONED(*GetPoisoned<S1>()); 215 EXPECT_POISONED(*GetPoisoned<S1>()); 216 EXPECT_POISONED(*GetPoisoned<S1>()); 217 218 EXPECT_POISONED(*GetPoisoned<S2>()); 219 EXPECT_POISONED(*GetPoisoned<S2>()); 220 EXPECT_POISONED(*GetPoisoned<S2>()); 221 222 EXPECT_POISONED(*GetPoisoned<S4>()); 223 EXPECT_POISONED(*GetPoisoned<S4>()); 224 EXPECT_POISONED(*GetPoisoned<S4>()); 225 226 EXPECT_POISONED(*GetPoisoned<S8>()); 227 EXPECT_POISONED(*GetPoisoned<S8>()); 228 EXPECT_POISONED(*GetPoisoned<S8>()); 229 230 // ZExt 231 EXPECT_POISONED(*GetPoisoned<U1>()); 232 EXPECT_POISONED(*GetPoisoned<U1>()); 233 EXPECT_POISONED(*GetPoisoned<U1>()); 234 EXPECT_POISONED(*GetPoisoned<U2>()); 235 EXPECT_POISONED(*GetPoisoned<U2>()); 236 EXPECT_POISONED(*GetPoisoned<U4>()); 237 238 // Unary ops. 239 EXPECT_POISONED(- *GetPoisoned<S4>()); 240 241 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 242 243 244 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 245 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 246} 247 248TEST(MemorySanitizer, Phi1) { 249 S4 c; 250 if (g_one) { 251 c = *GetPoisoned<S4>(); 252 } else { 253 break_optimization(0); 254 c = 0; 255 } 256 EXPECT_POISONED(c); 257} 258 259TEST(MemorySanitizer, Phi2) { 260 S4 i = *GetPoisoned<S4>(); 261 S4 n = g_one; 262 EXPECT_UMR(for (; i < g_one; i++);); 263 EXPECT_POISONED(i); 264} 265 266NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 267NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 268NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 269 270TEST(MemorySanitizer, ArgTest) { 271 Arg1ExpectUMR(*GetPoisoned<S4>()); 272 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 273 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 274} 275 276 277TEST(MemorySanitizer, CallAndRet) { 278 if (!__msan_has_dynamic_component()) return; 279 ReturnPoisoned<S1>(); 280 ReturnPoisoned<S2>(); 281 ReturnPoisoned<S4>(); 282 ReturnPoisoned<S8>(); 283 284 EXPECT_POISONED(ReturnPoisoned<S1>()); 285 EXPECT_POISONED(ReturnPoisoned<S2>()); 286 EXPECT_POISONED(ReturnPoisoned<S4>()); 287 EXPECT_POISONED(ReturnPoisoned<S8>()); 288} 289 290// malloc() in the following test may be optimized to produce a compile-time 291// undef value. Check that we trap on the volatile assignment anyway. 292TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 293 S4 *x = (int*)malloc(sizeof(S4)); 294 EXPECT_POISONED(*x); 295 free(x); 296} 297 298TEST(MemorySanitizer, Malloc) { 299 S4 *x = (int*)Ident(malloc(sizeof(S4))); 300 EXPECT_POISONED(*x); 301 free(x); 302} 303 304TEST(MemorySanitizer, Realloc) { 305 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 306 EXPECT_POISONED(x[0]); 307 x[0] = 1; 308 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 309 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 310 EXPECT_POISONED(x[1]); 311 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 312 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 313 EXPECT_POISONED(x[2]); 314 EXPECT_POISONED(x[1]); 315 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 316 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 317 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 318 EXPECT_POISONED(x[1]); 319 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 320 EXPECT_POISONED(x[1]); 321 EXPECT_POISONED(x[2]); 322 free(x); 323} 324 325TEST(MemorySanitizer, Calloc) { 326 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 327 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 328 // EXPECT_EQ(0, *x); 329 free(x); 330} 331 332TEST(MemorySanitizer, AndOr) { 333 U4 *p = GetPoisoned<U4>(); 334 // We poison two bytes in the midle of a 4-byte word to make the test 335 // correct regardless of endianness. 336 ((U1*)p)[1] = 0; 337 ((U1*)p)[2] = 0xff; 338 EXPECT_NOT_POISONED(*p & 0x00ffff00); 339 EXPECT_NOT_POISONED(*p & 0x00ff0000); 340 EXPECT_NOT_POISONED(*p & 0x0000ff00); 341 EXPECT_POISONED(*p & 0xff000000); 342 EXPECT_POISONED(*p & 0x000000ff); 343 EXPECT_POISONED(*p & 0x0000ffff); 344 EXPECT_POISONED(*p & 0xffff0000); 345 346 EXPECT_NOT_POISONED(*p | 0xff0000ff); 347 EXPECT_NOT_POISONED(*p | 0xff00ffff); 348 EXPECT_NOT_POISONED(*p | 0xffff00ff); 349 EXPECT_POISONED(*p | 0xff000000); 350 EXPECT_POISONED(*p | 0x000000ff); 351 EXPECT_POISONED(*p | 0x0000ffff); 352 EXPECT_POISONED(*p | 0xffff0000); 353 354 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 355} 356 357template<class T> 358static bool applyNot(T value, T shadow) { 359 __msan_partial_poison(&value, &shadow, sizeof(T)); 360 return !value; 361} 362 363TEST(MemorySanitizer, Not) { 364 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 365 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 366 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 367 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 368 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 369 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 370 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 371 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 372 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 373 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 374 375 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 376 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 377 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 378 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 379 380 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 381 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 382} 383 384TEST(MemorySanitizer, Shift) { 385 U4 *up = GetPoisoned<U4>(); 386 ((U1*)up)[0] = 0; 387 ((U1*)up)[3] = 0xff; 388 EXPECT_NOT_POISONED(*up >> 30); 389 EXPECT_NOT_POISONED(*up >> 24); 390 EXPECT_POISONED(*up >> 23); 391 EXPECT_POISONED(*up >> 10); 392 393 EXPECT_NOT_POISONED(*up << 30); 394 EXPECT_NOT_POISONED(*up << 24); 395 EXPECT_POISONED(*up << 23); 396 EXPECT_POISONED(*up << 10); 397 398 S4 *sp = (S4*)up; 399 EXPECT_NOT_POISONED(*sp >> 30); 400 EXPECT_NOT_POISONED(*sp >> 24); 401 EXPECT_POISONED(*sp >> 23); 402 EXPECT_POISONED(*sp >> 10); 403 404 sp = GetPoisoned<S4>(); 405 ((S1*)sp)[1] = 0; 406 ((S1*)sp)[2] = 0; 407 EXPECT_POISONED(*sp >> 31); 408 409 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 410 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 411} 412 413NOINLINE static int GetPoisonedZero() { 414 int *zero = new int; 415 *zero = 0; 416 __msan_poison(zero, sizeof(*zero)); 417 int res = *zero; 418 delete zero; 419 return res; 420} 421 422TEST(MemorySanitizer, LoadFromDirtyAddress) { 423 int *a = new int; 424 *a = 0; 425 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 426 delete a; 427} 428 429TEST(MemorySanitizer, StoreToDirtyAddress) { 430 int *a = new int; 431 EXPECT_UMR(a[GetPoisonedZero()] = 0); 432 break_optimization(a); 433 delete a; 434} 435 436 437NOINLINE void StackTestFunc() { 438 S4 p4; 439 S4 ok4 = 1; 440 S2 p2; 441 S2 ok2 = 1; 442 S1 p1; 443 S1 ok1 = 1; 444 break_optimization(&p4); 445 break_optimization(&ok4); 446 break_optimization(&p2); 447 break_optimization(&ok2); 448 break_optimization(&p1); 449 break_optimization(&ok1); 450 451 EXPECT_POISONED(p4); 452 EXPECT_POISONED(p2); 453 EXPECT_POISONED(p1); 454 EXPECT_NOT_POISONED(ok1); 455 EXPECT_NOT_POISONED(ok2); 456 EXPECT_NOT_POISONED(ok4); 457} 458 459TEST(MemorySanitizer, StackTest) { 460 StackTestFunc(); 461} 462 463NOINLINE void StackStressFunc() { 464 int foo[10000]; 465 break_optimization(foo); 466} 467 468TEST(MemorySanitizer, DISABLED_StackStressTest) { 469 for (int i = 0; i < 1000000; i++) 470 StackStressFunc(); 471} 472 473template<class T> 474void TestFloatingPoint() { 475 static volatile T v; 476 static T g[100]; 477 break_optimization(&g); 478 T *x = GetPoisoned<T>(); 479 T *y = GetPoisoned<T>(1); 480 EXPECT_POISONED(*x); 481 EXPECT_POISONED((long long)*x); 482 EXPECT_POISONED((int)*x); 483 g[0] = *x; 484 g[1] = *x + *y; 485 g[2] = *x - *y; 486 g[3] = *x * *y; 487} 488 489TEST(MemorySanitizer, FloatingPointTest) { 490 TestFloatingPoint<float>(); 491 TestFloatingPoint<double>(); 492} 493 494TEST(MemorySanitizer, DynMem) { 495 S4 x = 0; 496 S4 *y = GetPoisoned<S4>(); 497 memcpy(y, &x, g_one * sizeof(S4)); 498 EXPECT_NOT_POISONED(*y); 499} 500 501static char *DynRetTestStr; 502 503TEST(MemorySanitizer, DynRet) { 504 if (!__msan_has_dynamic_component()) return; 505 ReturnPoisoned<S8>(); 506 EXPECT_NOT_POISONED(clearenv()); 507} 508 509 510TEST(MemorySanitizer, DynRet1) { 511 if (!__msan_has_dynamic_component()) return; 512 ReturnPoisoned<S8>(); 513} 514 515struct LargeStruct { 516 S4 x[10]; 517}; 518 519NOINLINE 520LargeStruct LargeRetTest() { 521 LargeStruct res; 522 res.x[0] = *GetPoisoned<S4>(); 523 res.x[1] = *GetPoisoned<S4>(); 524 res.x[2] = *GetPoisoned<S4>(); 525 res.x[3] = *GetPoisoned<S4>(); 526 res.x[4] = *GetPoisoned<S4>(); 527 res.x[5] = *GetPoisoned<S4>(); 528 res.x[6] = *GetPoisoned<S4>(); 529 res.x[7] = *GetPoisoned<S4>(); 530 res.x[8] = *GetPoisoned<S4>(); 531 res.x[9] = *GetPoisoned<S4>(); 532 return res; 533} 534 535TEST(MemorySanitizer, strcmp) { 536 char s1[10]; 537 char s2[10]; 538 strncpy(s1, "foo", 10); 539 s2[0] = 'f'; 540 s2[1] = 'n'; 541 EXPECT_GT(strcmp(s1, s2), 0); 542 s2[1] = 'o'; 543 int res; 544 EXPECT_UMR(res = strcmp(s1, s2)); 545 EXPECT_NOT_POISONED(res); 546 EXPECT_EQ(strncmp(s1, s2, 1), 0); 547} 548 549TEST(MemorySanitizer, LargeRet) { 550 LargeStruct a = LargeRetTest(); 551 EXPECT_POISONED(a.x[0]); 552 EXPECT_POISONED(a.x[9]); 553} 554 555TEST(MemorySanitizer, strerror) { 556 char *buf = strerror(EINVAL); 557 EXPECT_NOT_POISONED(strlen(buf)); 558 buf = strerror(123456); 559 EXPECT_NOT_POISONED(strlen(buf)); 560} 561 562TEST(MemorySanitizer, strerror_r) { 563 errno = 0; 564 char buf[1000]; 565 char *res = strerror_r(EINVAL, buf, sizeof(buf)); 566 ASSERT_EQ(0, errno); 567 if (!res) res = buf; // POSIX version success. 568 EXPECT_NOT_POISONED(strlen(res)); 569} 570 571TEST(MemorySanitizer, fread) { 572 char *x = new char[32]; 573 FILE *f = fopen("/proc/self/stat", "r"); 574 assert(f); 575 fread(x, 1, 32, f); 576 EXPECT_NOT_POISONED(x[0]); 577 EXPECT_NOT_POISONED(x[16]); 578 EXPECT_NOT_POISONED(x[31]); 579 fclose(f); 580 delete x; 581} 582 583TEST(MemorySanitizer, read) { 584 char *x = new char[32]; 585 int fd = open("/proc/self/stat", O_RDONLY); 586 assert(fd > 0); 587 int sz = read(fd, x, 32); 588 assert(sz == 32); 589 EXPECT_NOT_POISONED(x[0]); 590 EXPECT_NOT_POISONED(x[16]); 591 EXPECT_NOT_POISONED(x[31]); 592 close(fd); 593 delete x; 594} 595 596TEST(MemorySanitizer, pread) { 597 char *x = new char[32]; 598 int fd = open("/proc/self/stat", O_RDONLY); 599 assert(fd > 0); 600 int sz = pread(fd, x, 32, 0); 601 assert(sz == 32); 602 EXPECT_NOT_POISONED(x[0]); 603 EXPECT_NOT_POISONED(x[16]); 604 EXPECT_NOT_POISONED(x[31]); 605 close(fd); 606 delete x; 607} 608 609TEST(MemorySanitizer, readv) { 610 char buf[2011]; 611 struct iovec iov[2]; 612 iov[0].iov_base = buf + 1; 613 iov[0].iov_len = 5; 614 iov[1].iov_base = buf + 10; 615 iov[1].iov_len = 2000; 616 int fd = open("/proc/self/stat", O_RDONLY); 617 assert(fd > 0); 618 int sz = readv(fd, iov, 2); 619 ASSERT_LT(sz, 5 + 2000); 620 ASSERT_GT(sz, iov[0].iov_len); 621 EXPECT_POISONED(buf[0]); 622 EXPECT_NOT_POISONED(buf[1]); 623 EXPECT_NOT_POISONED(buf[5]); 624 EXPECT_POISONED(buf[6]); 625 EXPECT_POISONED(buf[9]); 626 EXPECT_NOT_POISONED(buf[10]); 627 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 628 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 629 close(fd); 630} 631 632TEST(MemorySanitizer, preadv) { 633 char buf[2011]; 634 struct iovec iov[2]; 635 iov[0].iov_base = buf + 1; 636 iov[0].iov_len = 5; 637 iov[1].iov_base = buf + 10; 638 iov[1].iov_len = 2000; 639 int fd = open("/proc/self/stat", O_RDONLY); 640 assert(fd > 0); 641 int sz = preadv(fd, iov, 2, 3); 642 ASSERT_LT(sz, 5 + 2000); 643 ASSERT_GT(sz, iov[0].iov_len); 644 EXPECT_POISONED(buf[0]); 645 EXPECT_NOT_POISONED(buf[1]); 646 EXPECT_NOT_POISONED(buf[5]); 647 EXPECT_POISONED(buf[6]); 648 EXPECT_POISONED(buf[9]); 649 EXPECT_NOT_POISONED(buf[10]); 650 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 651 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 652 close(fd); 653} 654 655// FIXME: fails now. 656TEST(MemorySanitizer, DISABLED_ioctl) { 657 struct winsize ws; 658 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 659 EXPECT_NOT_POISONED(ws.ws_col); 660} 661 662TEST(MemorySanitizer, readlink) { 663 char *x = new char[1000]; 664 readlink("/proc/self/exe", x, 1000); 665 EXPECT_NOT_POISONED(x[0]); 666 delete [] x; 667} 668 669 670TEST(MemorySanitizer, stat) { 671 struct stat* st = new struct stat; 672 int res = stat("/proc/self/stat", st); 673 assert(!res); 674 EXPECT_NOT_POISONED(st->st_dev); 675 EXPECT_NOT_POISONED(st->st_mode); 676 EXPECT_NOT_POISONED(st->st_size); 677} 678 679TEST(MemorySanitizer, fstatat) { 680 struct stat* st = new struct stat; 681 int dirfd = open("/proc/self", O_RDONLY); 682 assert(dirfd > 0); 683 int res = fstatat(dirfd, "stat", st, 0); 684 assert(!res); 685 EXPECT_NOT_POISONED(st->st_dev); 686 EXPECT_NOT_POISONED(st->st_mode); 687 EXPECT_NOT_POISONED(st->st_size); 688 close(dirfd); 689} 690 691TEST(MemorySanitizer, statfs) { 692 struct statfs st; 693 int res = statfs("/", &st); 694 assert(!res); 695 EXPECT_NOT_POISONED(st.f_type); 696 EXPECT_NOT_POISONED(st.f_bfree); 697 EXPECT_NOT_POISONED(st.f_namelen); 698} 699 700TEST(MemorySanitizer, statvfs) { 701 struct statvfs st; 702 int res = statvfs("/", &st); 703 assert(!res); 704 EXPECT_NOT_POISONED(st.f_bsize); 705 EXPECT_NOT_POISONED(st.f_blocks); 706 EXPECT_NOT_POISONED(st.f_bfree); 707 EXPECT_NOT_POISONED(st.f_namemax); 708} 709 710TEST(MemorySanitizer, fstatvfs) { 711 struct statvfs st; 712 int fd = open("/", O_RDONLY | O_DIRECTORY); 713 int res = fstatvfs(fd, &st); 714 assert(!res); 715 EXPECT_NOT_POISONED(st.f_bsize); 716 EXPECT_NOT_POISONED(st.f_blocks); 717 EXPECT_NOT_POISONED(st.f_bfree); 718 EXPECT_NOT_POISONED(st.f_namemax); 719 close(fd); 720} 721 722TEST(MemorySanitizer, pipe) { 723 int* pipefd = new int[2]; 724 int res = pipe(pipefd); 725 assert(!res); 726 EXPECT_NOT_POISONED(pipefd[0]); 727 EXPECT_NOT_POISONED(pipefd[1]); 728 close(pipefd[0]); 729 close(pipefd[1]); 730} 731 732TEST(MemorySanitizer, pipe2) { 733 int* pipefd = new int[2]; 734 int res = pipe2(pipefd, O_NONBLOCK); 735 assert(!res); 736 EXPECT_NOT_POISONED(pipefd[0]); 737 EXPECT_NOT_POISONED(pipefd[1]); 738 close(pipefd[0]); 739 close(pipefd[1]); 740} 741 742TEST(MemorySanitizer, socketpair) { 743 int sv[2]; 744 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 745 assert(!res); 746 EXPECT_NOT_POISONED(sv[0]); 747 EXPECT_NOT_POISONED(sv[1]); 748 close(sv[0]); 749 close(sv[1]); 750} 751 752TEST(MemorySanitizer, poll) { 753 int* pipefd = new int[2]; 754 int res = pipe(pipefd); 755 ASSERT_EQ(0, res); 756 757 char data = 42; 758 res = write(pipefd[1], &data, 1); 759 ASSERT_EQ(1, res); 760 761 pollfd fds[2]; 762 fds[0].fd = pipefd[0]; 763 fds[0].events = POLLIN; 764 fds[1].fd = pipefd[1]; 765 fds[1].events = POLLIN; 766 res = poll(fds, 2, 500); 767 ASSERT_EQ(1, res); 768 EXPECT_NOT_POISONED(fds[0].revents); 769 EXPECT_NOT_POISONED(fds[1].revents); 770 771 close(pipefd[0]); 772 close(pipefd[1]); 773} 774 775TEST(MemorySanitizer, ppoll) { 776 int* pipefd = new int[2]; 777 int res = pipe(pipefd); 778 ASSERT_EQ(0, res); 779 780 char data = 42; 781 res = write(pipefd[1], &data, 1); 782 ASSERT_EQ(1, res); 783 784 pollfd fds[2]; 785 fds[0].fd = pipefd[0]; 786 fds[0].events = POLLIN; 787 fds[1].fd = pipefd[1]; 788 fds[1].events = POLLIN; 789 sigset_t ss; 790 sigemptyset(&ss); 791 res = ppoll(fds, 2, NULL, &ss); 792 ASSERT_EQ(1, res); 793 EXPECT_NOT_POISONED(fds[0].revents); 794 EXPECT_NOT_POISONED(fds[1].revents); 795 796 close(pipefd[0]); 797 close(pipefd[1]); 798} 799 800TEST(MemorySanitizer, poll_positive) { 801 int* pipefd = new int[2]; 802 int res = pipe(pipefd); 803 ASSERT_EQ(0, res); 804 805 pollfd fds[2]; 806 fds[0].fd = pipefd[0]; 807 fds[0].events = POLLIN; 808 // fds[1].fd uninitialized 809 fds[1].events = POLLIN; 810 EXPECT_UMR(poll(fds, 2, 0)); 811 812 close(pipefd[0]); 813 close(pipefd[1]); 814} 815 816TEST(MemorySanitizer, bind_getsockname) { 817 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 818 819 struct sockaddr_in sai; 820 memset(&sai, 0, sizeof(sai)); 821 sai.sin_family = AF_UNIX; 822 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 823 824 assert(!res); 825 char buf[200]; 826 socklen_t addrlen; 827 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 828 829 addrlen = sizeof(buf); 830 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 831 EXPECT_NOT_POISONED(addrlen); 832 EXPECT_NOT_POISONED(buf[0]); 833 EXPECT_NOT_POISONED(buf[addrlen - 1]); 834 EXPECT_POISONED(buf[addrlen]); 835 close(sock); 836} 837 838TEST(MemorySanitizer, accept) { 839 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 840 ASSERT_LT(0, listen_socket); 841 842 struct sockaddr_in sai; 843 memset(&sai, 0, sizeof(sai)); 844 sai.sin_family = AF_INET; 845 sai.sin_port = 0; 846 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 847 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 848 ASSERT_EQ(0, res); 849 850 res = listen(listen_socket, 1); 851 ASSERT_EQ(0, res); 852 853 socklen_t sz = sizeof(sai); 854 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 855 ASSERT_EQ(0, res); 856 ASSERT_EQ(sizeof(sai), sz); 857 858 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 859 ASSERT_LT(0, connect_socket); 860 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 861 ASSERT_EQ(0, res); 862 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 863 ASSERT_EQ(-1, res); 864 ASSERT_EQ(EINPROGRESS, errno); 865 866 __msan_poison(&sai, sizeof(sai)); 867 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 868 ASSERT_LT(0, new_sock); 869 ASSERT_EQ(sizeof(sai), sz); 870 EXPECT_NOT_POISONED(sai); 871 872 __msan_poison(&sai, sizeof(sai)); 873 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 874 ASSERT_EQ(0, res); 875 ASSERT_EQ(sizeof(sai), sz); 876 EXPECT_NOT_POISONED(sai); 877 878 close(new_sock); 879 close(connect_socket); 880 close(listen_socket); 881} 882 883TEST(MemorySanitizer, getaddrinfo) { 884 struct addrinfo *ai; 885 struct addrinfo hints; 886 memset(&hints, 0, sizeof(hints)); 887 hints.ai_family = AF_INET; 888 int res = getaddrinfo("localhost", NULL, &hints, &ai); 889 ASSERT_EQ(0, res); 890 EXPECT_NOT_POISONED(*ai); 891 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 892 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 893} 894 895TEST(MemorySanitizer, getnameinfo) { 896 struct sockaddr_in sai; 897 memset(&sai, 0, sizeof(sai)); 898 sai.sin_family = AF_INET; 899 sai.sin_port = 80; 900 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 901 char host[500]; 902 char serv[500]; 903 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 904 sizeof(host), serv, sizeof(serv), 0); 905 ASSERT_EQ(0, res); 906 EXPECT_NOT_POISONED(host[0]); 907 EXPECT_POISONED(host[sizeof(host) - 1]); 908 909 ASSERT_NE(0, strlen(host)); 910 EXPECT_NOT_POISONED(serv[0]); 911 EXPECT_POISONED(serv[sizeof(serv) - 1]); 912 ASSERT_NE(0, strlen(serv)); 913} 914 915#define EXPECT_HOSTENT_NOT_POISONED(he) \ 916 do { \ 917 EXPECT_NOT_POISONED(*(he)); \ 918 ASSERT_NE((void *) 0, (he)->h_name); \ 919 ASSERT_NE((void *) 0, (he)->h_aliases); \ 920 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 921 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 922 char **p = (he)->h_aliases; \ 923 while (*p) { \ 924 EXPECT_NOT_POISONED(strlen(*p)); \ 925 ++p; \ 926 } \ 927 char **q = (he)->h_addr_list; \ 928 while (*q) { \ 929 EXPECT_NOT_POISONED(*q[0]); \ 930 ++q; \ 931 } \ 932 EXPECT_NOT_POISONED(*q); \ 933 } while (0) 934 935TEST(MemorySanitizer, gethostent) { 936 struct hostent *he = gethostent(); 937 ASSERT_NE((void *)NULL, he); 938 EXPECT_HOSTENT_NOT_POISONED(he); 939} 940 941#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 942 943TEST(MemorySanitizer, gethostbyname) { 944 struct hostent *he = gethostbyname("localhost"); 945 ASSERT_NE((void *)NULL, he); 946 EXPECT_HOSTENT_NOT_POISONED(he); 947} 948 949#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 950 951TEST(MemorySanitizer, recvmsg) { 952 int server_socket = socket(AF_INET, SOCK_DGRAM, 0); 953 ASSERT_LT(0, server_socket); 954 955 struct sockaddr_in sai; 956 memset(&sai, 0, sizeof(sai)); 957 sai.sin_family = AF_INET; 958 sai.sin_port = 0; 959 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 960 int res = bind(server_socket, (struct sockaddr *)&sai, sizeof(sai)); 961 ASSERT_EQ(0, res); 962 963 socklen_t sz = sizeof(sai); 964 res = getsockname(server_socket, (struct sockaddr *)&sai, &sz); 965 ASSERT_EQ(0, res); 966 ASSERT_EQ(sizeof(sai), sz); 967 968 969 int client_socket = socket(AF_INET, SOCK_DGRAM, 0); 970 ASSERT_LT(0, client_socket); 971 972 struct sockaddr_in client_sai; 973 memset(&client_sai, 0, sizeof(client_sai)); 974 client_sai.sin_family = AF_INET; 975 client_sai.sin_port = 0; 976 client_sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 977 res = bind(client_socket, (struct sockaddr *)&client_sai, sizeof(client_sai)); 978 ASSERT_EQ(0, res); 979 980 sz = sizeof(client_sai); 981 res = getsockname(client_socket, (struct sockaddr *)&client_sai, &sz); 982 ASSERT_EQ(0, res); 983 ASSERT_EQ(sizeof(client_sai), sz); 984 985 986 const char *s = "message text"; 987 struct iovec iov; 988 iov.iov_base = (void *)s; 989 iov.iov_len = strlen(s) + 1; 990 struct msghdr msg; 991 memset(&msg, 0, sizeof(msg)); 992 msg.msg_name = &sai; 993 msg.msg_namelen = sizeof(sai); 994 msg.msg_iov = &iov; 995 msg.msg_iovlen = 1; 996 res = sendmsg(client_socket, &msg, 0); 997 ASSERT_LT(0, res); 998 999 1000 char buf[1000]; 1001 struct iovec recv_iov; 1002 recv_iov.iov_base = (void *)&buf; 1003 recv_iov.iov_len = sizeof(buf); 1004 struct sockaddr_in recv_sai; 1005 struct msghdr recv_msg; 1006 memset(&recv_msg, 0, sizeof(recv_msg)); 1007 recv_msg.msg_name = &recv_sai; 1008 recv_msg.msg_namelen = sizeof(recv_sai); 1009 recv_msg.msg_iov = &recv_iov; 1010 recv_msg.msg_iovlen = 1; 1011 res = recvmsg(server_socket, &recv_msg, 0); 1012 ASSERT_LT(0, res); 1013 1014 ASSERT_EQ(sizeof(recv_sai), recv_msg.msg_namelen); 1015 EXPECT_NOT_POISONED(*(struct sockaddr_in *)recv_msg.msg_name); 1016 EXPECT_STREQ(s, buf); 1017 1018 close(server_socket); 1019 close(client_socket); 1020} 1021 1022TEST(MemorySanitizer, gethostbyname2) { 1023 struct hostent *he = gethostbyname2("localhost", AF_INET); 1024 ASSERT_NE((void *)NULL, he); 1025 EXPECT_HOSTENT_NOT_POISONED(he); 1026} 1027 1028TEST(MemorySanitizer, gethostbyaddr) { 1029 in_addr_t addr = inet_addr("127.0.0.1"); 1030 EXPECT_NOT_POISONED(addr); 1031 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 1032 ASSERT_NE((void *)NULL, he); 1033 EXPECT_HOSTENT_NOT_POISONED(he); 1034} 1035 1036TEST(MemorySanitizer, gethostent_r) { 1037 char buf[2000]; 1038 struct hostent he; 1039 struct hostent *result; 1040 int err; 1041 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 1042 ASSERT_EQ(0, res); 1043 EXPECT_NOT_POISONED(result); 1044 ASSERT_NE((void *)NULL, result); 1045 EXPECT_HOSTENT_NOT_POISONED(result); 1046 EXPECT_NOT_POISONED(err); 1047} 1048 1049TEST(MemorySanitizer, gethostbyname_r) { 1050 char buf[2000]; 1051 struct hostent he; 1052 struct hostent *result; 1053 int err; 1054 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 1055 ASSERT_EQ(0, res); 1056 EXPECT_NOT_POISONED(result); 1057 ASSERT_NE((void *)NULL, result); 1058 EXPECT_HOSTENT_NOT_POISONED(result); 1059 EXPECT_NOT_POISONED(err); 1060} 1061 1062TEST(MemorySanitizer, gethostbyname2_r) { 1063 char buf[2000]; 1064 struct hostent he; 1065 struct hostent *result; 1066 int err; 1067 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 1068 &result, &err); 1069 ASSERT_EQ(0, res); 1070 EXPECT_NOT_POISONED(result); 1071 ASSERT_NE((void *)NULL, result); 1072 EXPECT_HOSTENT_NOT_POISONED(result); 1073 EXPECT_NOT_POISONED(err); 1074} 1075 1076TEST(MemorySanitizer, gethostbyaddr_r) { 1077 char buf[2000]; 1078 struct hostent he; 1079 struct hostent *result; 1080 int err; 1081 in_addr_t addr = inet_addr("127.0.0.1"); 1082 EXPECT_NOT_POISONED(addr); 1083 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 1084 &result, &err); 1085 ASSERT_EQ(0, res); 1086 EXPECT_NOT_POISONED(result); 1087 ASSERT_NE((void *)NULL, result); 1088 EXPECT_HOSTENT_NOT_POISONED(result); 1089 EXPECT_NOT_POISONED(err); 1090} 1091 1092TEST(MemorySanitizer, getsockopt) { 1093 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 1094 struct linger l[2]; 1095 socklen_t sz = sizeof(l[0]); 1096 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 1097 ASSERT_EQ(0, res); 1098 ASSERT_EQ(sizeof(l[0]), sz); 1099 EXPECT_NOT_POISONED(l[0]); 1100 EXPECT_POISONED(*(char *)(l + 1)); 1101} 1102 1103TEST(MemorySanitizer, getcwd) { 1104 char path[PATH_MAX + 1]; 1105 char* res = getcwd(path, sizeof(path)); 1106 assert(res); 1107 EXPECT_NOT_POISONED(path[0]); 1108} 1109 1110TEST(MemorySanitizer, getcwd_gnu) { 1111 char* res = getcwd(NULL, 0); 1112 assert(res); 1113 EXPECT_NOT_POISONED(res[0]); 1114 free(res); 1115} 1116 1117TEST(MemorySanitizer, get_current_dir_name) { 1118 char* res = get_current_dir_name(); 1119 assert(res); 1120 EXPECT_NOT_POISONED(res[0]); 1121 free(res); 1122} 1123 1124TEST(MemorySanitizer, confstr) { 1125 char buf[3]; 1126 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1127 ASSERT_GT(res, sizeof(buf)); 1128 EXPECT_NOT_POISONED(buf[0]); 1129 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1130 1131 char buf2[1000]; 1132 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1133 ASSERT_LT(res, sizeof(buf2)); 1134 EXPECT_NOT_POISONED(buf2[0]); 1135 EXPECT_NOT_POISONED(buf2[res - 1]); 1136 EXPECT_POISONED(buf2[res]); 1137 ASSERT_EQ(res, strlen(buf2) + 1); 1138} 1139 1140TEST(MemorySanitizer, readdir) { 1141 DIR *dir = opendir("."); 1142 struct dirent *d = readdir(dir); 1143 assert(d); 1144 EXPECT_NOT_POISONED(d->d_name[0]); 1145 closedir(dir); 1146} 1147 1148TEST(MemorySanitizer, readdir_r) { 1149 DIR *dir = opendir("."); 1150 struct dirent d; 1151 struct dirent *pd; 1152 int res = readdir_r(dir, &d, &pd); 1153 assert(!res); 1154 EXPECT_NOT_POISONED(pd); 1155 EXPECT_NOT_POISONED(d.d_name[0]); 1156 closedir(dir); 1157} 1158 1159TEST(MemorySanitizer, realpath) { 1160 const char* relpath = "."; 1161 char path[PATH_MAX + 1]; 1162 char* res = realpath(relpath, path); 1163 assert(res); 1164 EXPECT_NOT_POISONED(path[0]); 1165} 1166 1167TEST(MemorySanitizer, realpath_null) { 1168 const char* relpath = "."; 1169 char* res = realpath(relpath, NULL); 1170 printf("%d, %s\n", errno, strerror(errno)); 1171 assert(res); 1172 EXPECT_NOT_POISONED(res[0]); 1173 free(res); 1174} 1175 1176TEST(MemorySanitizer, canonicalize_file_name) { 1177 const char* relpath = "."; 1178 char* res = canonicalize_file_name(relpath); 1179 assert(res); 1180 EXPECT_NOT_POISONED(res[0]); 1181 free(res); 1182} 1183 1184extern char **environ; 1185 1186TEST(MemorySanitizer, setenv) { 1187 setenv("AAA", "BBB", 1); 1188 for (char **envp = environ; *envp; ++envp) { 1189 EXPECT_NOT_POISONED(*envp); 1190 EXPECT_NOT_POISONED(*envp[0]); 1191 } 1192} 1193 1194TEST(MemorySanitizer, putenv) { 1195 char s[] = "AAA=BBB"; 1196 putenv(s); 1197 for (char **envp = environ; *envp; ++envp) { 1198 EXPECT_NOT_POISONED(*envp); 1199 EXPECT_NOT_POISONED(*envp[0]); 1200 } 1201} 1202 1203TEST(MemorySanitizer, memcpy) { 1204 char* x = new char[2]; 1205 char* y = new char[2]; 1206 x[0] = 1; 1207 x[1] = *GetPoisoned<char>(); 1208 memcpy(y, x, 2); 1209 EXPECT_NOT_POISONED(y[0]); 1210 EXPECT_POISONED(y[1]); 1211} 1212 1213void TestUnalignedMemcpy(int left, int right, bool src_is_aligned) { 1214 const int sz = 20; 1215 char *dst = (char *)malloc(sz); 1216 U4 origin = __msan_get_origin(dst); 1217 1218 char *src = (char *)malloc(sz); 1219 memset(src, 0, sz); 1220 1221 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); 1222 for (int i = 0; i < left; ++i) 1223 EXPECT_POISONED_O(dst[i], origin); 1224 for (int i = 0; i < right; ++i) 1225 EXPECT_POISONED_O(dst[sz - i - 1], origin); 1226 EXPECT_NOT_POISONED(dst[left]); 1227 EXPECT_NOT_POISONED(dst[sz - right - 1]); 1228 1229 free(dst); 1230 free(src); 1231} 1232 1233TEST(MemorySanitizer, memcpy_unaligned) { 1234 for (int i = 0; i < 4; ++i) { 1235 for (int j = 0; j < 4; ++j) { 1236 TestUnalignedMemcpy(i, j, true); 1237 TestUnalignedMemcpy(i, j, false); 1238 } 1239 } 1240} 1241 1242TEST(MemorySanitizer, memmove) { 1243 char* x = new char[2]; 1244 char* y = new char[2]; 1245 x[0] = 1; 1246 x[1] = *GetPoisoned<char>(); 1247 memmove(y, x, 2); 1248 EXPECT_NOT_POISONED(y[0]); 1249 EXPECT_POISONED(y[1]); 1250} 1251 1252TEST(MemorySanitizer, bcopy) { 1253 char* x = new char[2]; 1254 char* y = new char[2]; 1255 x[0] = 1; 1256 x[1] = *GetPoisoned<char>(); 1257 bcopy(x, y, 2); 1258 EXPECT_NOT_POISONED(y[0]); 1259 EXPECT_POISONED(y[1]); 1260} 1261 1262TEST(MemorySanitizer, strdup) { 1263 char buf[4] = "abc"; 1264 __msan_poison(buf + 2, sizeof(*buf)); 1265 char *x = strdup(buf); 1266 EXPECT_NOT_POISONED(x[0]); 1267 EXPECT_NOT_POISONED(x[1]); 1268 EXPECT_POISONED(x[2]); 1269 EXPECT_NOT_POISONED(x[3]); 1270 free(x); 1271} 1272 1273TEST(MemorySanitizer, strndup) { 1274 char buf[4] = "abc"; 1275 __msan_poison(buf + 2, sizeof(*buf)); 1276 char *x = strndup(buf, 3); 1277 EXPECT_NOT_POISONED(x[0]); 1278 EXPECT_NOT_POISONED(x[1]); 1279 EXPECT_POISONED(x[2]); 1280 EXPECT_NOT_POISONED(x[3]); 1281 free(x); 1282} 1283 1284TEST(MemorySanitizer, strndup_short) { 1285 char buf[4] = "abc"; 1286 __msan_poison(buf + 1, sizeof(*buf)); 1287 __msan_poison(buf + 2, sizeof(*buf)); 1288 char *x = strndup(buf, 2); 1289 EXPECT_NOT_POISONED(x[0]); 1290 EXPECT_POISONED(x[1]); 1291 EXPECT_NOT_POISONED(x[2]); 1292 free(x); 1293} 1294 1295 1296template<class T, int size> 1297void TestOverlapMemmove() { 1298 T *x = new T[size]; 1299 assert(size >= 3); 1300 x[2] = 0; 1301 memmove(x, x + 1, (size - 1) * sizeof(T)); 1302 EXPECT_NOT_POISONED(x[1]); 1303 if (!__msan_has_dynamic_component()) { 1304 // FIXME: under DR we will lose this information 1305 // because accesses in memmove will unpoisin the shadow. 1306 // We need to use our own memove implementation instead of libc's. 1307 EXPECT_POISONED(x[0]); 1308 EXPECT_POISONED(x[2]); 1309 } 1310 delete [] x; 1311} 1312 1313TEST(MemorySanitizer, overlap_memmove) { 1314 TestOverlapMemmove<U1, 10>(); 1315 TestOverlapMemmove<U1, 1000>(); 1316 TestOverlapMemmove<U8, 4>(); 1317 TestOverlapMemmove<U8, 1000>(); 1318} 1319 1320TEST(MemorySanitizer, strcpy) { // NOLINT 1321 char* x = new char[3]; 1322 char* y = new char[3]; 1323 x[0] = 'a'; 1324 x[1] = *GetPoisoned<char>(1, 1); 1325 x[2] = 0; 1326 strcpy(y, x); // NOLINT 1327 EXPECT_NOT_POISONED(y[0]); 1328 EXPECT_POISONED(y[1]); 1329 EXPECT_NOT_POISONED(y[2]); 1330} 1331 1332TEST(MemorySanitizer, strncpy) { // NOLINT 1333 char* x = new char[3]; 1334 char* y = new char[3]; 1335 x[0] = 'a'; 1336 x[1] = *GetPoisoned<char>(1, 1); 1337 x[2] = 0; 1338 strncpy(y, x, 2); // NOLINT 1339 EXPECT_NOT_POISONED(y[0]); 1340 EXPECT_POISONED(y[1]); 1341 EXPECT_POISONED(y[2]); 1342} 1343 1344TEST(MemorySanitizer, stpcpy) { // NOLINT 1345 char* x = new char[3]; 1346 char* y = new char[3]; 1347 x[0] = 'a'; 1348 x[1] = *GetPoisoned<char>(1, 1); 1349 x[2] = 0; 1350 char *res = stpcpy(y, x); // NOLINT 1351 ASSERT_EQ(res, y + 2); 1352 EXPECT_NOT_POISONED(y[0]); 1353 EXPECT_POISONED(y[1]); 1354 EXPECT_NOT_POISONED(y[2]); 1355} 1356 1357TEST(MemorySanitizer, strtol) { 1358 char *e; 1359 assert(1 == strtol("1", &e, 10)); 1360 EXPECT_NOT_POISONED((S8) e); 1361} 1362 1363TEST(MemorySanitizer, strtoll) { 1364 char *e; 1365 assert(1 == strtoll("1", &e, 10)); 1366 EXPECT_NOT_POISONED((S8) e); 1367} 1368 1369TEST(MemorySanitizer, strtoul) { 1370 char *e; 1371 assert(1 == strtoul("1", &e, 10)); 1372 EXPECT_NOT_POISONED((S8) e); 1373} 1374 1375TEST(MemorySanitizer, strtoull) { 1376 char *e; 1377 assert(1 == strtoull("1", &e, 10)); 1378 EXPECT_NOT_POISONED((S8) e); 1379} 1380 1381TEST(MemorySanitizer, strtoimax) { 1382 char *e; 1383 assert(1 == strtoimax("1", &e, 10)); 1384 EXPECT_NOT_POISONED((S8) e); 1385} 1386 1387TEST(MemorySanitizer, strtoumax) { 1388 char *e; 1389 assert(1 == strtoumax("1", &e, 10)); 1390 EXPECT_NOT_POISONED((S8) e); 1391} 1392 1393TEST(MemorySanitizer, strtod) { 1394 char *e; 1395 assert(0 != strtod("1.5", &e)); 1396 EXPECT_NOT_POISONED((S8) e); 1397} 1398 1399#ifdef __GLIBC__ 1400extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1401TEST(MemorySanitizer, __strtod_l) { 1402 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); 1403 char *e; 1404 assert(0 != __strtod_l("1.5", &e, loc)); 1405 EXPECT_NOT_POISONED((S8) e); 1406 freelocale(loc); 1407} 1408#endif // __GLIBC__ 1409 1410TEST(MemorySanitizer, strtof) { 1411 char *e; 1412 assert(0 != strtof("1.5", &e)); 1413 EXPECT_NOT_POISONED((S8) e); 1414} 1415 1416TEST(MemorySanitizer, strtold) { 1417 char *e; 1418 assert(0 != strtold("1.5", &e)); 1419 EXPECT_NOT_POISONED((S8) e); 1420} 1421 1422TEST(MemorySanitizer, modf) { 1423 double x, y; 1424 x = modf(2.1, &y); 1425 EXPECT_NOT_POISONED(y); 1426} 1427 1428TEST(MemorySanitizer, modff) { 1429 float x, y; 1430 x = modff(2.1, &y); 1431 EXPECT_NOT_POISONED(y); 1432} 1433 1434TEST(MemorySanitizer, modfl) { 1435 long double x, y; 1436 x = modfl(2.1, &y); 1437 EXPECT_NOT_POISONED(y); 1438} 1439 1440TEST(MemorySanitizer, sprintf) { // NOLINT 1441 char buff[10]; 1442 break_optimization(buff); 1443 EXPECT_POISONED(buff[0]); 1444 int res = sprintf(buff, "%d", 1234567); // NOLINT 1445 assert(res == 7); 1446 assert(buff[0] == '1'); 1447 assert(buff[1] == '2'); 1448 assert(buff[2] == '3'); 1449 assert(buff[6] == '7'); 1450 assert(buff[7] == 0); 1451 EXPECT_POISONED(buff[8]); 1452} 1453 1454TEST(MemorySanitizer, snprintf) { 1455 char buff[10]; 1456 break_optimization(buff); 1457 EXPECT_POISONED(buff[0]); 1458 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1459 assert(res == 7); 1460 assert(buff[0] == '1'); 1461 assert(buff[1] == '2'); 1462 assert(buff[2] == '3'); 1463 assert(buff[6] == '7'); 1464 assert(buff[7] == 0); 1465 EXPECT_POISONED(buff[8]); 1466} 1467 1468TEST(MemorySanitizer, swprintf) { 1469 wchar_t buff[10]; 1470 assert(sizeof(wchar_t) == 4); 1471 break_optimization(buff); 1472 EXPECT_POISONED(buff[0]); 1473 int res = swprintf(buff, 9, L"%d", 1234567); 1474 assert(res == 7); 1475 assert(buff[0] == '1'); 1476 assert(buff[1] == '2'); 1477 assert(buff[2] == '3'); 1478 assert(buff[6] == '7'); 1479 assert(buff[7] == 0); 1480 EXPECT_POISONED(buff[8]); 1481} 1482 1483TEST(MemorySanitizer, asprintf) { // NOLINT 1484 char *pbuf; 1485 EXPECT_POISONED(pbuf); 1486 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1487 assert(res == 7); 1488 EXPECT_NOT_POISONED(pbuf); 1489 assert(pbuf[0] == '1'); 1490 assert(pbuf[1] == '2'); 1491 assert(pbuf[2] == '3'); 1492 assert(pbuf[6] == '7'); 1493 assert(pbuf[7] == 0); 1494 free(pbuf); 1495} 1496 1497TEST(MemorySanitizer, mbstowcs) { 1498 const char *x = "abc"; 1499 wchar_t buff[10]; 1500 int res = mbstowcs(buff, x, 2); 1501 EXPECT_EQ(2, res); 1502 EXPECT_EQ(L'a', buff[0]); 1503 EXPECT_EQ(L'b', buff[1]); 1504 EXPECT_POISONED(buff[2]); 1505 res = mbstowcs(buff, x, 10); 1506 EXPECT_EQ(3, res); 1507 EXPECT_NOT_POISONED(buff[3]); 1508} 1509 1510TEST(MemorySanitizer, wcstombs) { 1511 const wchar_t *x = L"abc"; 1512 char buff[10]; 1513 int res = wcstombs(buff, x, 4); 1514 EXPECT_EQ(res, 3); 1515 EXPECT_EQ(buff[0], 'a'); 1516 EXPECT_EQ(buff[1], 'b'); 1517 EXPECT_EQ(buff[2], 'c'); 1518} 1519 1520TEST(MemorySanitizer, wcsrtombs) { 1521 const wchar_t *x = L"abc"; 1522 const wchar_t *p = x; 1523 char buff[10]; 1524 mbstate_t mbs; 1525 memset(&mbs, 0, sizeof(mbs)); 1526 int res = wcsrtombs(buff, &p, 4, &mbs); 1527 EXPECT_EQ(res, 3); 1528 EXPECT_EQ(buff[0], 'a'); 1529 EXPECT_EQ(buff[1], 'b'); 1530 EXPECT_EQ(buff[2], 'c'); 1531 EXPECT_EQ(buff[3], '\0'); 1532 EXPECT_POISONED(buff[4]); 1533} 1534 1535TEST(MemorySanitizer, wcsnrtombs) { 1536 const wchar_t *x = L"abc"; 1537 const wchar_t *p = x; 1538 char buff[10]; 1539 mbstate_t mbs; 1540 memset(&mbs, 0, sizeof(mbs)); 1541 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1542 EXPECT_EQ(res, 2); 1543 EXPECT_EQ(buff[0], 'a'); 1544 EXPECT_EQ(buff[1], 'b'); 1545 EXPECT_POISONED(buff[2]); 1546} 1547 1548TEST(MemorySanitizer, mbtowc) { 1549 const char *x = "abc"; 1550 wchar_t wx; 1551 int res = mbtowc(&wx, x, 3); 1552 EXPECT_GT(res, 0); 1553 EXPECT_NOT_POISONED(wx); 1554} 1555 1556TEST(MemorySanitizer, mbrtowc) { 1557 const char *x = "abc"; 1558 wchar_t wx; 1559 mbstate_t mbs; 1560 memset(&mbs, 0, sizeof(mbs)); 1561 int res = mbrtowc(&wx, x, 3, &mbs); 1562 EXPECT_GT(res, 0); 1563 EXPECT_NOT_POISONED(wx); 1564} 1565 1566TEST(MemorySanitizer, gettimeofday) { 1567 struct timeval tv; 1568 struct timezone tz; 1569 break_optimization(&tv); 1570 break_optimization(&tz); 1571 assert(sizeof(tv) == 16); 1572 assert(sizeof(tz) == 8); 1573 EXPECT_POISONED(tv.tv_sec); 1574 EXPECT_POISONED(tv.tv_usec); 1575 EXPECT_POISONED(tz.tz_minuteswest); 1576 EXPECT_POISONED(tz.tz_dsttime); 1577 assert(0 == gettimeofday(&tv, &tz)); 1578 EXPECT_NOT_POISONED(tv.tv_sec); 1579 EXPECT_NOT_POISONED(tv.tv_usec); 1580 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1581 EXPECT_NOT_POISONED(tz.tz_dsttime); 1582} 1583 1584TEST(MemorySanitizer, clock_gettime) { 1585 struct timespec tp; 1586 EXPECT_POISONED(tp.tv_sec); 1587 EXPECT_POISONED(tp.tv_nsec); 1588 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1589 EXPECT_NOT_POISONED(tp.tv_sec); 1590 EXPECT_NOT_POISONED(tp.tv_nsec); 1591} 1592 1593TEST(MemorySanitizer, clock_getres) { 1594 struct timespec tp; 1595 EXPECT_POISONED(tp.tv_sec); 1596 EXPECT_POISONED(tp.tv_nsec); 1597 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1598 EXPECT_POISONED(tp.tv_sec); 1599 EXPECT_POISONED(tp.tv_nsec); 1600 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1601 EXPECT_NOT_POISONED(tp.tv_sec); 1602 EXPECT_NOT_POISONED(tp.tv_nsec); 1603} 1604 1605TEST(MemorySanitizer, getitimer) { 1606 struct itimerval it1, it2; 1607 int res; 1608 EXPECT_POISONED(it1.it_interval.tv_sec); 1609 EXPECT_POISONED(it1.it_interval.tv_usec); 1610 EXPECT_POISONED(it1.it_value.tv_sec); 1611 EXPECT_POISONED(it1.it_value.tv_usec); 1612 res = getitimer(ITIMER_VIRTUAL, &it1); 1613 assert(!res); 1614 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1615 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1616 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1617 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1618 1619 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1620 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1621 1622 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1623 assert(!res); 1624 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1625 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1626 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1627 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1628 1629 // Check that old_value can be 0, and disable the timer. 1630 memset(&it1, 0, sizeof(it1)); 1631 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1632 assert(!res); 1633} 1634 1635TEST(MemorySanitizer, setitimer_null) { 1636 setitimer(ITIMER_VIRTUAL, 0, 0); 1637 // Not testing the return value, since it the behaviour seems to differ 1638 // between libc implementations and POSIX. 1639 // Should never crash, though. 1640} 1641 1642TEST(MemorySanitizer, time) { 1643 time_t t; 1644 EXPECT_POISONED(t); 1645 time_t t2 = time(&t); 1646 assert(t2 != (time_t)-1); 1647 EXPECT_NOT_POISONED(t); 1648} 1649 1650TEST(MemorySanitizer, localtime) { 1651 time_t t = 123; 1652 struct tm *time = localtime(&t); 1653 assert(time != 0); 1654 EXPECT_NOT_POISONED(time->tm_sec); 1655 EXPECT_NOT_POISONED(time->tm_hour); 1656 EXPECT_NOT_POISONED(time->tm_year); 1657 EXPECT_NOT_POISONED(time->tm_isdst); 1658 EXPECT_NE(0, strlen(time->tm_zone)); 1659} 1660 1661TEST(MemorySanitizer, localtime_r) { 1662 time_t t = 123; 1663 struct tm time; 1664 struct tm *res = localtime_r(&t, &time); 1665 assert(res != 0); 1666 EXPECT_NOT_POISONED(time.tm_sec); 1667 EXPECT_NOT_POISONED(time.tm_hour); 1668 EXPECT_NOT_POISONED(time.tm_year); 1669 EXPECT_NOT_POISONED(time.tm_isdst); 1670 EXPECT_NE(0, strlen(time.tm_zone)); 1671} 1672 1673TEST(MemorySanitizer, getmntent) { 1674 FILE *fp = setmntent("/etc/fstab", "r"); 1675 struct mntent *mnt = getmntent(fp); 1676 ASSERT_NE((void *)0, mnt); 1677 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1678 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1679 ASSERT_NE(0, strlen(mnt->mnt_type)); 1680 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1681 EXPECT_NOT_POISONED(mnt->mnt_freq); 1682 EXPECT_NOT_POISONED(mnt->mnt_passno); 1683 fclose(fp); 1684} 1685 1686TEST(MemorySanitizer, getmntent_r) { 1687 FILE *fp = setmntent("/etc/fstab", "r"); 1688 struct mntent mntbuf; 1689 char buf[1000]; 1690 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 1691 ASSERT_NE((void *)0, mnt); 1692 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1693 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1694 ASSERT_NE(0, strlen(mnt->mnt_type)); 1695 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1696 EXPECT_NOT_POISONED(mnt->mnt_freq); 1697 EXPECT_NOT_POISONED(mnt->mnt_passno); 1698 fclose(fp); 1699} 1700 1701TEST(MemorySanitizer, ether) { 1702 const char *asc = "11:22:33:44:55:66"; 1703 struct ether_addr *paddr = ether_aton(asc); 1704 EXPECT_NOT_POISONED(*paddr); 1705 1706 struct ether_addr addr; 1707 paddr = ether_aton_r(asc, &addr); 1708 ASSERT_EQ(paddr, &addr); 1709 EXPECT_NOT_POISONED(addr); 1710 1711 char *s = ether_ntoa(&addr); 1712 ASSERT_NE(0, strlen(s)); 1713 1714 char buf[100]; 1715 s = ether_ntoa_r(&addr, buf); 1716 ASSERT_EQ(s, buf); 1717 ASSERT_NE(0, strlen(buf)); 1718} 1719 1720TEST(MemorySanitizer, mmap) { 1721 const int size = 4096; 1722 void *p1, *p2; 1723 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1724 __msan_poison(p1, size); 1725 munmap(p1, size); 1726 for (int i = 0; i < 1000; i++) { 1727 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1728 if (p2 == p1) 1729 break; 1730 else 1731 munmap(p2, size); 1732 } 1733 if (p1 == p2) { 1734 EXPECT_NOT_POISONED(*(char*)p2); 1735 munmap(p2, size); 1736 } 1737} 1738 1739// FIXME: enable and add ecvt. 1740// FIXME: check why msandr does nt handle fcvt. 1741TEST(MemorySanitizer, fcvt) { 1742 int a, b; 1743 break_optimization(&a); 1744 break_optimization(&b); 1745 EXPECT_POISONED(a); 1746 EXPECT_POISONED(b); 1747 char *str = fcvt(12345.6789, 10, &a, &b); 1748 EXPECT_NOT_POISONED(a); 1749 EXPECT_NOT_POISONED(b); 1750} 1751 1752TEST(MemorySanitizer, frexp) { 1753 int x; 1754 x = *GetPoisoned<int>(); 1755 double r = frexp(1.1, &x); 1756 EXPECT_NOT_POISONED(r); 1757 EXPECT_NOT_POISONED(x); 1758 1759 x = *GetPoisoned<int>(); 1760 float rf = frexpf(1.1, &x); 1761 EXPECT_NOT_POISONED(rf); 1762 EXPECT_NOT_POISONED(x); 1763 1764 x = *GetPoisoned<int>(); 1765 double rl = frexpl(1.1, &x); 1766 EXPECT_NOT_POISONED(rl); 1767 EXPECT_NOT_POISONED(x); 1768} 1769 1770namespace { 1771 1772static int cnt; 1773 1774void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1775 assert(signo == SIGPROF); 1776 assert(si); 1777 EXPECT_NOT_POISONED(si->si_errno); 1778 EXPECT_NOT_POISONED(si->si_pid); 1779#if __linux__ 1780# if defined(__x86_64__) 1781 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1782# elif defined(__i386__) 1783 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1784# endif 1785#endif 1786 ++cnt; 1787} 1788 1789TEST(MemorySanitizer, sigaction) { 1790 struct sigaction act = {}; 1791 struct sigaction oldact = {}; 1792 struct sigaction origact = {}; 1793 1794 sigaction(SIGPROF, 0, &origact); 1795 1796 act.sa_flags |= SA_SIGINFO; 1797 act.sa_sigaction = &SigactionHandler; 1798 sigaction(SIGPROF, &act, 0); 1799 1800 kill(getpid(), SIGPROF); 1801 1802 act.sa_flags &= ~SA_SIGINFO; 1803 act.sa_handler = SIG_DFL; 1804 sigaction(SIGPROF, &act, 0); 1805 1806 act.sa_flags &= ~SA_SIGINFO; 1807 act.sa_handler = SIG_IGN; 1808 sigaction(SIGPROF, &act, &oldact); 1809 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1810 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1811 kill(getpid(), SIGPROF); 1812 1813 act.sa_flags |= SA_SIGINFO; 1814 act.sa_sigaction = &SigactionHandler; 1815 sigaction(SIGPROF, &act, &oldact); 1816 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1817 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1818 kill(getpid(), SIGPROF); 1819 1820 act.sa_flags &= ~SA_SIGINFO; 1821 act.sa_handler = SIG_DFL; 1822 sigaction(SIGPROF, &act, &oldact); 1823 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1824 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1825 EXPECT_EQ(2, cnt); 1826 1827 sigaction(SIGPROF, &origact, 0); 1828} 1829 1830} // namespace 1831 1832 1833TEST(MemorySanitizer, sigemptyset) { 1834 sigset_t s; 1835 EXPECT_POISONED(s); 1836 int res = sigemptyset(&s); 1837 ASSERT_EQ(0, res); 1838 EXPECT_NOT_POISONED(s); 1839} 1840 1841TEST(MemorySanitizer, sigfillset) { 1842 sigset_t s; 1843 EXPECT_POISONED(s); 1844 int res = sigfillset(&s); 1845 ASSERT_EQ(0, res); 1846 EXPECT_NOT_POISONED(s); 1847} 1848 1849TEST(MemorySanitizer, sigpending) { 1850 sigset_t s; 1851 EXPECT_POISONED(s); 1852 int res = sigpending(&s); 1853 ASSERT_EQ(0, res); 1854 EXPECT_NOT_POISONED(s); 1855} 1856 1857TEST(MemorySanitizer, sigprocmask) { 1858 sigset_t s; 1859 EXPECT_POISONED(s); 1860 int res = sigprocmask(SIG_BLOCK, 0, &s); 1861 ASSERT_EQ(0, res); 1862 EXPECT_NOT_POISONED(s); 1863} 1864 1865struct StructWithDtor { 1866 ~StructWithDtor(); 1867}; 1868 1869NOINLINE StructWithDtor::~StructWithDtor() { 1870 break_optimization(0); 1871} 1872 1873TEST(MemorySanitizer, Invoke) { 1874 StructWithDtor s; // Will cause the calls to become invokes. 1875 EXPECT_NOT_POISONED(0); 1876 EXPECT_POISONED(*GetPoisoned<int>()); 1877 EXPECT_NOT_POISONED(0); 1878 EXPECT_POISONED(*GetPoisoned<int>()); 1879 EXPECT_POISONED(ReturnPoisoned<S4>()); 1880} 1881 1882TEST(MemorySanitizer, ptrtoint) { 1883 // Test that shadow is propagated through pointer-to-integer conversion. 1884 void* p = (void*)0xABCD; 1885 __msan_poison(((char*)&p) + 1, sizeof(p)); 1886 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1887 1888 void* q = (void*)0xABCD; 1889 __msan_poison(&q, sizeof(q) - 1); 1890 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1891} 1892 1893static void vaargsfn2(int guard, ...) { 1894 va_list vl; 1895 va_start(vl, guard); 1896 EXPECT_NOT_POISONED(va_arg(vl, int)); 1897 EXPECT_NOT_POISONED(va_arg(vl, int)); 1898 EXPECT_NOT_POISONED(va_arg(vl, int)); 1899 EXPECT_POISONED(va_arg(vl, double)); 1900 va_end(vl); 1901} 1902 1903static void vaargsfn(int guard, ...) { 1904 va_list vl; 1905 va_start(vl, guard); 1906 EXPECT_NOT_POISONED(va_arg(vl, int)); 1907 EXPECT_POISONED(va_arg(vl, int)); 1908 // The following call will overwrite __msan_param_tls. 1909 // Checks after it test that arg shadow was somehow saved across the call. 1910 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1911 EXPECT_NOT_POISONED(va_arg(vl, int)); 1912 EXPECT_POISONED(va_arg(vl, int)); 1913 va_end(vl); 1914} 1915 1916TEST(MemorySanitizer, VAArgTest) { 1917 int* x = GetPoisoned<int>(); 1918 int* y = GetPoisoned<int>(4); 1919 vaargsfn(1, 13, *x, 42, *y); 1920} 1921 1922static void vaargsfn_many(int guard, ...) { 1923 va_list vl; 1924 va_start(vl, guard); 1925 EXPECT_NOT_POISONED(va_arg(vl, int)); 1926 EXPECT_POISONED(va_arg(vl, int)); 1927 EXPECT_NOT_POISONED(va_arg(vl, int)); 1928 EXPECT_NOT_POISONED(va_arg(vl, int)); 1929 EXPECT_NOT_POISONED(va_arg(vl, int)); 1930 EXPECT_NOT_POISONED(va_arg(vl, int)); 1931 EXPECT_NOT_POISONED(va_arg(vl, int)); 1932 EXPECT_NOT_POISONED(va_arg(vl, int)); 1933 EXPECT_NOT_POISONED(va_arg(vl, int)); 1934 EXPECT_POISONED(va_arg(vl, int)); 1935 va_end(vl); 1936} 1937 1938TEST(MemorySanitizer, VAArgManyTest) { 1939 int* x = GetPoisoned<int>(); 1940 int* y = GetPoisoned<int>(4); 1941 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1942} 1943 1944static void vaargsfn_pass2(va_list vl) { 1945 EXPECT_NOT_POISONED(va_arg(vl, int)); 1946 EXPECT_NOT_POISONED(va_arg(vl, int)); 1947 EXPECT_POISONED(va_arg(vl, int)); 1948} 1949 1950static void vaargsfn_pass(int guard, ...) { 1951 va_list vl; 1952 va_start(vl, guard); 1953 EXPECT_POISONED(va_arg(vl, int)); 1954 vaargsfn_pass2(vl); 1955 va_end(vl); 1956} 1957 1958TEST(MemorySanitizer, VAArgPass) { 1959 int* x = GetPoisoned<int>(); 1960 int* y = GetPoisoned<int>(4); 1961 vaargsfn_pass(1, *x, 2, 3, *y); 1962} 1963 1964static void vaargsfn_copy2(va_list vl) { 1965 EXPECT_NOT_POISONED(va_arg(vl, int)); 1966 EXPECT_POISONED(va_arg(vl, int)); 1967} 1968 1969static void vaargsfn_copy(int guard, ...) { 1970 va_list vl; 1971 va_start(vl, guard); 1972 EXPECT_NOT_POISONED(va_arg(vl, int)); 1973 EXPECT_POISONED(va_arg(vl, int)); 1974 va_list vl2; 1975 va_copy(vl2, vl); 1976 vaargsfn_copy2(vl2); 1977 EXPECT_NOT_POISONED(va_arg(vl, int)); 1978 EXPECT_POISONED(va_arg(vl, int)); 1979 va_end(vl); 1980} 1981 1982TEST(MemorySanitizer, VAArgCopy) { 1983 int* x = GetPoisoned<int>(); 1984 int* y = GetPoisoned<int>(4); 1985 vaargsfn_copy(1, 2, *x, 3, *y); 1986} 1987 1988static void vaargsfn_ptr(int guard, ...) { 1989 va_list vl; 1990 va_start(vl, guard); 1991 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1992 EXPECT_POISONED(va_arg(vl, int*)); 1993 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1994 EXPECT_POISONED(va_arg(vl, double*)); 1995 va_end(vl); 1996} 1997 1998TEST(MemorySanitizer, VAArgPtr) { 1999 int** x = GetPoisoned<int*>(); 2000 double** y = GetPoisoned<double*>(8); 2001 int z; 2002 vaargsfn_ptr(1, &z, *x, &z, *y); 2003} 2004 2005static void vaargsfn_overflow(int guard, ...) { 2006 va_list vl; 2007 va_start(vl, guard); 2008 EXPECT_NOT_POISONED(va_arg(vl, int)); 2009 EXPECT_NOT_POISONED(va_arg(vl, int)); 2010 EXPECT_POISONED(va_arg(vl, int)); 2011 EXPECT_NOT_POISONED(va_arg(vl, int)); 2012 EXPECT_NOT_POISONED(va_arg(vl, int)); 2013 EXPECT_NOT_POISONED(va_arg(vl, int)); 2014 2015 EXPECT_NOT_POISONED(va_arg(vl, double)); 2016 EXPECT_NOT_POISONED(va_arg(vl, double)); 2017 EXPECT_NOT_POISONED(va_arg(vl, double)); 2018 EXPECT_POISONED(va_arg(vl, double)); 2019 EXPECT_NOT_POISONED(va_arg(vl, double)); 2020 EXPECT_POISONED(va_arg(vl, int*)); 2021 EXPECT_NOT_POISONED(va_arg(vl, double)); 2022 EXPECT_NOT_POISONED(va_arg(vl, double)); 2023 2024 EXPECT_POISONED(va_arg(vl, int)); 2025 EXPECT_POISONED(va_arg(vl, double)); 2026 EXPECT_POISONED(va_arg(vl, int*)); 2027 2028 EXPECT_NOT_POISONED(va_arg(vl, int)); 2029 EXPECT_NOT_POISONED(va_arg(vl, double)); 2030 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2031 2032 EXPECT_POISONED(va_arg(vl, int)); 2033 EXPECT_POISONED(va_arg(vl, double)); 2034 EXPECT_POISONED(va_arg(vl, int*)); 2035 2036 va_end(vl); 2037} 2038 2039TEST(MemorySanitizer, VAArgOverflow) { 2040 int* x = GetPoisoned<int>(); 2041 double* y = GetPoisoned<double>(8); 2042 int** p = GetPoisoned<int*>(16); 2043 int z; 2044 vaargsfn_overflow(1, 2045 1, 2, *x, 4, 5, 6, 2046 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2047 // the following args will overflow for sure 2048 *x, *y, *p, 2049 7, 9.9, &z, 2050 *x, *y, *p); 2051} 2052 2053static void vaargsfn_tlsoverwrite2(int guard, ...) { 2054 va_list vl; 2055 va_start(vl, guard); 2056 for (int i = 0; i < 20; ++i) 2057 EXPECT_NOT_POISONED(va_arg(vl, int)); 2058 va_end(vl); 2059} 2060 2061static void vaargsfn_tlsoverwrite(int guard, ...) { 2062 // This call will overwrite TLS contents unless it's backed up somewhere. 2063 vaargsfn_tlsoverwrite2(2, 2064 42, 42, 42, 42, 42, 2065 42, 42, 42, 42, 42, 2066 42, 42, 42, 42, 42, 2067 42, 42, 42, 42, 42); // 20x 2068 va_list vl; 2069 va_start(vl, guard); 2070 for (int i = 0; i < 20; ++i) 2071 EXPECT_POISONED(va_arg(vl, int)); 2072 va_end(vl); 2073} 2074 2075TEST(MemorySanitizer, VAArgTLSOverwrite) { 2076 int* x = GetPoisoned<int>(); 2077 vaargsfn_tlsoverwrite(1, 2078 *x, *x, *x, *x, *x, 2079 *x, *x, *x, *x, *x, 2080 *x, *x, *x, *x, *x, 2081 *x, *x, *x, *x, *x); // 20x 2082 2083} 2084 2085struct StructByVal { 2086 int a, b, c, d, e, f; 2087}; 2088 2089NOINLINE void StructByValTestFunc(struct StructByVal s) { 2090 EXPECT_NOT_POISONED(s.a); 2091 EXPECT_POISONED(s.b); 2092 EXPECT_NOT_POISONED(s.c); 2093 EXPECT_POISONED(s.d); 2094 EXPECT_NOT_POISONED(s.e); 2095 EXPECT_POISONED(s.f); 2096} 2097 2098NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2099 StructByValTestFunc(s); 2100} 2101 2102NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2103 StructByValTestFunc(s); 2104} 2105 2106TEST(MemorySanitizer, StructByVal) { 2107 // Large aggregates are passed as "byval" pointer argument in LLVM. 2108 struct StructByVal s; 2109 s.a = 1; 2110 s.b = *GetPoisoned<int>(); 2111 s.c = 2; 2112 s.d = *GetPoisoned<int>(); 2113 s.e = 3; 2114 s.f = *GetPoisoned<int>(); 2115 StructByValTestFunc(s); 2116 StructByValTestFunc1(s); 2117 StructByValTestFunc2(0, s); 2118} 2119 2120 2121#if MSAN_HAS_M128 2122NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2123NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2124TEST(MemorySanitizer, m128) { 2125 __m128i a = _mm_set1_epi16(0x1234); 2126 __m128i b = _mm_set1_epi16(0x7890); 2127 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2128 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2129} 2130// FIXME: add more tests for __m128i. 2131#endif // MSAN_HAS_M128 2132 2133// We should not complain when copying this poisoned hole. 2134struct StructWithHole { 2135 U4 a; 2136 // 4-byte hole. 2137 U8 b; 2138}; 2139 2140NOINLINE StructWithHole ReturnStructWithHole() { 2141 StructWithHole res; 2142 __msan_poison(&res, sizeof(res)); 2143 res.a = 1; 2144 res.b = 2; 2145 return res; 2146} 2147 2148TEST(MemorySanitizer, StructWithHole) { 2149 StructWithHole a = ReturnStructWithHole(); 2150 break_optimization(&a); 2151} 2152 2153template <class T> 2154NOINLINE T ReturnStruct() { 2155 T res; 2156 __msan_poison(&res, sizeof(res)); 2157 res.a = 1; 2158 return res; 2159} 2160 2161template <class T> 2162NOINLINE void TestReturnStruct() { 2163 T s1 = ReturnStruct<T>(); 2164 EXPECT_NOT_POISONED(s1.a); 2165 EXPECT_POISONED(s1.b); 2166} 2167 2168struct SSS1 { 2169 int a, b, c; 2170}; 2171struct SSS2 { 2172 int b, a, c; 2173}; 2174struct SSS3 { 2175 int b, c, a; 2176}; 2177struct SSS4 { 2178 int c, b, a; 2179}; 2180 2181struct SSS5 { 2182 int a; 2183 float b; 2184}; 2185struct SSS6 { 2186 int a; 2187 double b; 2188}; 2189struct SSS7 { 2190 S8 b; 2191 int a; 2192}; 2193struct SSS8 { 2194 S2 b; 2195 S8 a; 2196}; 2197 2198TEST(MemorySanitizer, IntStruct3) { 2199 TestReturnStruct<SSS1>(); 2200 TestReturnStruct<SSS2>(); 2201 TestReturnStruct<SSS3>(); 2202 TestReturnStruct<SSS4>(); 2203 TestReturnStruct<SSS5>(); 2204 TestReturnStruct<SSS6>(); 2205 TestReturnStruct<SSS7>(); 2206 TestReturnStruct<SSS8>(); 2207} 2208 2209struct LongStruct { 2210 U1 a1, b1; 2211 U2 a2, b2; 2212 U4 a4, b4; 2213 U8 a8, b8; 2214}; 2215 2216NOINLINE LongStruct ReturnLongStruct1() { 2217 LongStruct res; 2218 __msan_poison(&res, sizeof(res)); 2219 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2220 // leaves b1, .., b8 poisoned. 2221 return res; 2222} 2223 2224NOINLINE LongStruct ReturnLongStruct2() { 2225 LongStruct res; 2226 __msan_poison(&res, sizeof(res)); 2227 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2228 // leaves a1, .., a8 poisoned. 2229 return res; 2230} 2231 2232TEST(MemorySanitizer, LongStruct) { 2233 LongStruct s1 = ReturnLongStruct1(); 2234 __msan_print_shadow(&s1, sizeof(s1)); 2235 EXPECT_NOT_POISONED(s1.a1); 2236 EXPECT_NOT_POISONED(s1.a2); 2237 EXPECT_NOT_POISONED(s1.a4); 2238 EXPECT_NOT_POISONED(s1.a8); 2239 2240 EXPECT_POISONED(s1.b1); 2241 EXPECT_POISONED(s1.b2); 2242 EXPECT_POISONED(s1.b4); 2243 EXPECT_POISONED(s1.b8); 2244 2245 LongStruct s2 = ReturnLongStruct2(); 2246 __msan_print_shadow(&s2, sizeof(s2)); 2247 EXPECT_NOT_POISONED(s2.b1); 2248 EXPECT_NOT_POISONED(s2.b2); 2249 EXPECT_NOT_POISONED(s2.b4); 2250 EXPECT_NOT_POISONED(s2.b8); 2251 2252 EXPECT_POISONED(s2.a1); 2253 EXPECT_POISONED(s2.a2); 2254 EXPECT_POISONED(s2.a4); 2255 EXPECT_POISONED(s2.a8); 2256} 2257 2258TEST(MemorySanitizer, getrlimit) { 2259 struct rlimit limit; 2260 __msan_poison(&limit, sizeof(limit)); 2261 int result = getrlimit(RLIMIT_DATA, &limit); 2262 assert(result == 0); 2263 EXPECT_NOT_POISONED(limit.rlim_cur); 2264 EXPECT_NOT_POISONED(limit.rlim_max); 2265} 2266 2267TEST(MemorySanitizer, getrusage) { 2268 struct rusage usage; 2269 __msan_poison(&usage, sizeof(usage)); 2270 int result = getrusage(RUSAGE_SELF, &usage); 2271 assert(result == 0); 2272 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2273 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2274 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2275 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2276 EXPECT_NOT_POISONED(usage.ru_maxrss); 2277 EXPECT_NOT_POISONED(usage.ru_minflt); 2278 EXPECT_NOT_POISONED(usage.ru_majflt); 2279 EXPECT_NOT_POISONED(usage.ru_inblock); 2280 EXPECT_NOT_POISONED(usage.ru_oublock); 2281 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2282 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2283} 2284 2285#ifdef __GLIBC__ 2286extern char *program_invocation_name; 2287#else // __GLIBC__ 2288# error "TODO: port this" 2289#endif 2290 2291static void dladdr_testfn() {} 2292 2293TEST(MemorySanitizer, dladdr) { 2294 Dl_info info; 2295 __msan_poison(&info, sizeof(info)); 2296 int result = dladdr((const void*)dladdr_testfn, &info); 2297 assert(result != 0); 2298 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2299 if (info.dli_fname) 2300 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2301 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2302 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2303 if (info.dli_sname) 2304 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2305 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2306} 2307 2308#ifndef MSAN_TEST_DISABLE_DLOPEN 2309 2310static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2311 (*(int *)data)++; 2312 EXPECT_NOT_POISONED(info->dlpi_addr); 2313 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2314 EXPECT_NOT_POISONED(info->dlpi_phnum); 2315 for (int i = 0; i < info->dlpi_phnum; ++i) 2316 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2317 return 0; 2318} 2319 2320// Compute the path to our loadable DSO. We assume it's in the same 2321// directory. Only use string routines that we intercept so far to do this. 2322static int PathToLoadable(char *buf, size_t sz) { 2323 const char *basename = "libmsan_loadable.x86_64.so"; 2324 char *argv0 = program_invocation_name; 2325 char *last_slash = strrchr(argv0, '/'); 2326 assert(last_slash); 2327 int res = 2328 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2329 return res < sz ? 0 : res; 2330} 2331 2332TEST(MemorySanitizer, dl_iterate_phdr) { 2333 char path[4096]; 2334 int res = PathToLoadable(path, sizeof(path)); 2335 assert(!res); 2336 2337 // Having at least one dlopen'ed library in the process makes this more 2338 // entertaining. 2339 void *lib = dlopen(path, RTLD_LAZY); 2340 ASSERT_NE((void*)0, lib); 2341 2342 int count = 0; 2343 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2344 assert(count > 0); 2345 2346 dlclose(lib); 2347} 2348 2349 2350TEST(MemorySanitizer, dlopen) { 2351 char path[4096]; 2352 int res = PathToLoadable(path, sizeof(path)); 2353 assert(!res); 2354 2355 // We need to clear shadow for globals when doing dlopen. In order to test 2356 // this, we have to poison the shadow for the DSO before we load it. In 2357 // general this is difficult, but the loader tends to reload things in the 2358 // same place, so we open, close, and then reopen. The global should always 2359 // start out clean after dlopen. 2360 for (int i = 0; i < 2; i++) { 2361 void *lib = dlopen(path, RTLD_LAZY); 2362 if (lib == NULL) { 2363 printf("dlerror: %s\n", dlerror()); 2364 assert(lib != NULL); 2365 } 2366 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2367 assert(get_dso_global); 2368 void **dso_global = get_dso_global(); 2369 EXPECT_NOT_POISONED(*dso_global); 2370 __msan_poison(dso_global, sizeof(*dso_global)); 2371 EXPECT_POISONED(*dso_global); 2372 dlclose(lib); 2373 } 2374} 2375 2376// Regression test for a crash in dlopen() interceptor. 2377TEST(MemorySanitizer, dlopenFailed) { 2378 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2379 void *lib = dlopen(path, RTLD_LAZY); 2380 ASSERT_EQ(0, lib); 2381} 2382 2383#endif // MSAN_TEST_DISABLE_DLOPEN 2384 2385TEST(MemorySanitizer, sched_getaffinity) { 2386 cpu_set_t mask; 2387 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2388 ASSERT_EQ(0, res); 2389 EXPECT_NOT_POISONED(mask); 2390} 2391 2392TEST(MemorySanitizer, scanf) { 2393 const char *input = "42 hello"; 2394 int* d = new int; 2395 char* s = new char[7]; 2396 int res = sscanf(input, "%d %5s", d, s); 2397 printf("res %d\n", res); 2398 assert(res == 2); 2399 EXPECT_NOT_POISONED(*d); 2400 EXPECT_NOT_POISONED(s[0]); 2401 EXPECT_NOT_POISONED(s[1]); 2402 EXPECT_NOT_POISONED(s[2]); 2403 EXPECT_NOT_POISONED(s[3]); 2404 EXPECT_NOT_POISONED(s[4]); 2405 EXPECT_NOT_POISONED(s[5]); 2406 EXPECT_POISONED(s[6]); 2407 delete s; 2408 delete d; 2409} 2410 2411static void *SimpleThread_threadfn(void* data) { 2412 return new int; 2413} 2414 2415TEST(MemorySanitizer, SimpleThread) { 2416 pthread_t t; 2417 void *p; 2418 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2419 assert(!res); 2420 EXPECT_NOT_POISONED(t); 2421 res = pthread_join(t, &p); 2422 assert(!res); 2423 EXPECT_NOT_POISONED(p); 2424 delete (int*)p; 2425} 2426 2427static void *SmallStackThread_threadfn(void* data) { 2428 return 0; 2429} 2430 2431TEST(MemorySanitizer, SmallStackThread) { 2432 pthread_attr_t attr; 2433 pthread_t t; 2434 void *p; 2435 int res; 2436 res = pthread_attr_init(&attr); 2437 ASSERT_EQ(0, res); 2438 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2439 ASSERT_EQ(0, res); 2440 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2441 ASSERT_EQ(0, res); 2442 res = pthread_join(t, &p); 2443 ASSERT_EQ(0, res); 2444 res = pthread_attr_destroy(&attr); 2445 ASSERT_EQ(0, res); 2446} 2447 2448TEST(MemorySanitizer, PreAllocatedStackThread) { 2449 pthread_attr_t attr; 2450 pthread_t t; 2451 int res; 2452 res = pthread_attr_init(&attr); 2453 ASSERT_EQ(0, res); 2454 void *stack; 2455 const size_t kStackSize = 64 * 1024; 2456 res = posix_memalign(&stack, 4096, kStackSize); 2457 ASSERT_EQ(0, res); 2458 res = pthread_attr_setstack(&attr, stack, kStackSize); 2459 ASSERT_EQ(0, res); 2460 // A small self-allocated stack can not be extended by the tool. 2461 // In this case pthread_create is expected to fail. 2462 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2463 EXPECT_NE(0, res); 2464 res = pthread_attr_destroy(&attr); 2465 ASSERT_EQ(0, res); 2466} 2467 2468TEST(MemorySanitizer, pthread_getschedparam) { 2469 int policy; 2470 struct sched_param param; 2471 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2472 ASSERT_EQ(0, res); 2473 EXPECT_NOT_POISONED(policy); 2474 EXPECT_NOT_POISONED(param.sched_priority); 2475} 2476 2477TEST(MemorySanitizer, pthread_key_create) { 2478 pthread_key_t key; 2479 int res = pthread_key_create(&key, NULL); 2480 assert(!res); 2481 EXPECT_NOT_POISONED(key); 2482 res = pthread_key_delete(key); 2483 assert(!res); 2484} 2485 2486namespace { 2487struct SignalCondArg { 2488 pthread_cond_t* cond; 2489 pthread_mutex_t* mu; 2490 bool broadcast; 2491}; 2492 2493void *SignalCond(void *param) { 2494 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2495 pthread_mutex_lock(arg->mu); 2496 if (arg->broadcast) 2497 pthread_cond_broadcast(arg->cond); 2498 else 2499 pthread_cond_signal(arg->cond); 2500 pthread_mutex_unlock(arg->mu); 2501 return 0; 2502} 2503} // namespace 2504 2505TEST(MemorySanitizer, pthread_cond_wait) { 2506 pthread_cond_t cond; 2507 pthread_mutex_t mu; 2508 SignalCondArg args = {&cond, &mu, false}; 2509 pthread_cond_init(&cond, 0); 2510 pthread_mutex_init(&mu, 0); 2511 pthread_mutex_lock(&mu); 2512 2513 // signal 2514 pthread_t thr; 2515 pthread_create(&thr, 0, SignalCond, &args); 2516 int res = pthread_cond_wait(&cond, &mu); 2517 assert(!res); 2518 pthread_join(thr, 0); 2519 2520 // broadcast 2521 args.broadcast = true; 2522 pthread_create(&thr, 0, SignalCond, &args); 2523 res = pthread_cond_wait(&cond, &mu); 2524 assert(!res); 2525 pthread_join(thr, 0); 2526 2527 pthread_mutex_unlock(&mu); 2528 pthread_mutex_destroy(&mu); 2529 pthread_cond_destroy(&cond); 2530} 2531 2532TEST(MemorySanitizer, posix_memalign) { 2533 void *p; 2534 EXPECT_POISONED(p); 2535 int res = posix_memalign(&p, 4096, 13); 2536 ASSERT_EQ(0, res); 2537 EXPECT_NOT_POISONED(p); 2538 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2539 free(p); 2540} 2541 2542TEST(MemorySanitizer, memalign) { 2543 void *p = memalign(4096, 13); 2544 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2545 free(p); 2546} 2547 2548TEST(MemorySanitizer, valloc) { 2549 void *a = valloc(100); 2550 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2551 free(a); 2552} 2553 2554TEST(MemorySanitizer, pvalloc) { 2555 void *p = pvalloc(kPageSize + 100); 2556 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2557 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2558 free(p); 2559 2560 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2561 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2562 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2563 free(p); 2564} 2565 2566TEST(MemorySanitizer, inet_pton) { 2567 const char *s = "1:0:0:0:0:0:0:8"; 2568 unsigned char buf[sizeof(struct in6_addr)]; 2569 int res = inet_pton(AF_INET6, s, buf); 2570 ASSERT_EQ(1, res); 2571 EXPECT_NOT_POISONED(buf[0]); 2572 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2573 2574 char s_out[INET6_ADDRSTRLEN]; 2575 EXPECT_POISONED(s_out[3]); 2576 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2577 ASSERT_NE((void*)0, q); 2578 EXPECT_NOT_POISONED(s_out[3]); 2579} 2580 2581TEST(MemorySanitizer, inet_aton) { 2582 const char *s = "127.0.0.1"; 2583 struct in_addr in[2]; 2584 int res = inet_aton(s, in); 2585 ASSERT_NE(0, res); 2586 EXPECT_NOT_POISONED(in[0]); 2587 EXPECT_POISONED(*(char *)(in + 1)); 2588} 2589 2590TEST(MemorySanitizer, uname) { 2591 struct utsname u; 2592 int res = uname(&u); 2593 assert(!res); 2594 EXPECT_NOT_POISONED(strlen(u.sysname)); 2595 EXPECT_NOT_POISONED(strlen(u.nodename)); 2596 EXPECT_NOT_POISONED(strlen(u.release)); 2597 EXPECT_NOT_POISONED(strlen(u.version)); 2598 EXPECT_NOT_POISONED(strlen(u.machine)); 2599} 2600 2601TEST(MemorySanitizer, gethostname) { 2602 char buf[100]; 2603 int res = gethostname(buf, 100); 2604 assert(!res); 2605 EXPECT_NOT_POISONED(strlen(buf)); 2606} 2607 2608TEST(MemorySanitizer, sysinfo) { 2609 struct sysinfo info; 2610 int res = sysinfo(&info); 2611 assert(!res); 2612 EXPECT_NOT_POISONED(info); 2613} 2614 2615TEST(MemorySanitizer, getpwuid) { 2616 struct passwd *p = getpwuid(0); // root 2617 assert(p); 2618 EXPECT_NOT_POISONED(p->pw_name); 2619 assert(p->pw_name); 2620 EXPECT_NOT_POISONED(p->pw_name[0]); 2621 EXPECT_NOT_POISONED(p->pw_uid); 2622 assert(p->pw_uid == 0); 2623} 2624 2625TEST(MemorySanitizer, getpwnam_r) { 2626 struct passwd pwd; 2627 struct passwd *pwdres; 2628 char buf[10000]; 2629 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2630 assert(!res); 2631 EXPECT_NOT_POISONED(pwd.pw_name); 2632 assert(pwd.pw_name); 2633 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2634 EXPECT_NOT_POISONED(pwd.pw_uid); 2635 assert(pwd.pw_uid == 0); 2636} 2637 2638TEST(MemorySanitizer, getpwnam_r_positive) { 2639 struct passwd pwd; 2640 struct passwd *pwdres; 2641 char s[5]; 2642 strncpy(s, "abcd", 5); 2643 __msan_poison(s, 5); 2644 char buf[10000]; 2645 int res; 2646 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2647} 2648 2649TEST(MemorySanitizer, getgrnam_r) { 2650 struct group grp; 2651 struct group *grpres; 2652 char buf[10000]; 2653 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2654 assert(!res); 2655 EXPECT_NOT_POISONED(grp.gr_name); 2656 assert(grp.gr_name); 2657 EXPECT_NOT_POISONED(grp.gr_name[0]); 2658 EXPECT_NOT_POISONED(grp.gr_gid); 2659} 2660 2661TEST(MemorySanitizer, getgroups) { 2662 int n = getgroups(0, 0); 2663 gid_t *gids = new gid_t[n]; 2664 int res = getgroups(n, gids); 2665 ASSERT_EQ(n, res); 2666 for (int i = 0; i < n; ++i) 2667 EXPECT_NOT_POISONED(gids[i]); 2668} 2669 2670TEST(MemorySanitizer, wordexp) { 2671 wordexp_t w; 2672 int res = wordexp("a b c", &w, 0); 2673 ASSERT_EQ(0, res); 2674 ASSERT_EQ(3, w.we_wordc); 2675 ASSERT_STREQ("a", w.we_wordv[0]); 2676 ASSERT_STREQ("b", w.we_wordv[1]); 2677 ASSERT_STREQ("c", w.we_wordv[2]); 2678} 2679 2680template<class T> 2681static bool applySlt(T value, T shadow) { 2682 __msan_partial_poison(&value, &shadow, sizeof(T)); 2683 volatile bool zzz = true; 2684 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2685 // a shift-and-trunc to get at the highest bit. 2686 volatile bool v = value < 0 || zzz; 2687 return v; 2688} 2689 2690TEST(MemorySanitizer, SignedCompareWithZero) { 2691 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2692 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2693 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2694 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2695 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2696 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2697} 2698 2699template <class T, class S> 2700static T poisoned(T Va, S Sa) { 2701 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2702 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2703 T a; 2704 a = Va; 2705 __msan_partial_poison(&a, &Sa, sizeof(T)); 2706 return a; 2707} 2708 2709TEST(MemorySanitizer, ICmpRelational) { 2710 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2711 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2712 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2713 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2714 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2715 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2716 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2717 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2718 poisoned(-1, 0xFFFFFFFFU)); 2719 2720 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2721 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2722 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2723 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2724 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2725 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2726 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2727 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2728 poisoned(-1, 0xFFFFFFFFU)); 2729 2730 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2731 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2732 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2733 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2734 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2735 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2736 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2737 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2738 poisoned(-1, 0xFFFFFFFFU)); 2739 2740 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2741 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2742 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2743 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2744 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2745 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2746 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2747 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2748 poisoned(-1, 0xFFFFFFFFU)); 2749 2750 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2751 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2752 2753 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2754} 2755 2756#if MSAN_HAS_M128 2757TEST(MemorySanitizer, ICmpVectorRelational) { 2758 EXPECT_NOT_POISONED( 2759 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2760 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2761 EXPECT_NOT_POISONED( 2762 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2763 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2764 EXPECT_POISONED( 2765 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2766 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2767 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2768 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2769} 2770#endif 2771 2772// Volatile bitfield store is implemented as load-mask-store 2773// Test that we don't warn on the store of (uninitialized) padding. 2774struct VolatileBitfieldStruct { 2775 volatile unsigned x : 1; 2776 unsigned y : 1; 2777}; 2778 2779TEST(MemorySanitizer, VolatileBitfield) { 2780 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2781 S->x = 1; 2782 EXPECT_NOT_POISONED((unsigned)S->x); 2783 EXPECT_POISONED((unsigned)S->y); 2784} 2785 2786TEST(MemorySanitizer, UnalignedLoad) { 2787 char x[32]; 2788 memset(x + 8, 0, 16); 2789 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2790 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2791 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2792 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2793 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2794 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2795 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2796 2797 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2798 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2799 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2800 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2801 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2802 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2803 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2804 2805 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2806 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2807 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2808 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2809 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2810 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2811 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2812 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2813 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2814} 2815 2816TEST(MemorySanitizer, UnalignedStore16) { 2817 char x[5]; 2818 U2 y = 0; 2819 __msan_poison(&y, 1); 2820 __sanitizer_unaligned_store16(x + 1, y); 2821 EXPECT_POISONED(x[0]); 2822 EXPECT_POISONED(x[1]); 2823 EXPECT_NOT_POISONED(x[2]); 2824 EXPECT_POISONED(x[3]); 2825 EXPECT_POISONED(x[4]); 2826} 2827 2828TEST(MemorySanitizer, UnalignedStore32) { 2829 char x[8]; 2830 U4 y4 = 0; 2831 __msan_poison(&y4, 2); 2832 __sanitizer_unaligned_store32(x+3, y4); 2833 EXPECT_POISONED(x[0]); 2834 EXPECT_POISONED(x[1]); 2835 EXPECT_POISONED(x[2]); 2836 EXPECT_POISONED(x[3]); 2837 EXPECT_POISONED(x[4]); 2838 EXPECT_NOT_POISONED(x[5]); 2839 EXPECT_NOT_POISONED(x[6]); 2840 EXPECT_POISONED(x[7]); 2841} 2842 2843TEST(MemorySanitizer, UnalignedStore64) { 2844 char x[16]; 2845 U8 y = 0; 2846 __msan_poison(&y, 3); 2847 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2848 __sanitizer_unaligned_store64(x+3, y); 2849 EXPECT_POISONED(x[0]); 2850 EXPECT_POISONED(x[1]); 2851 EXPECT_POISONED(x[2]); 2852 EXPECT_POISONED(x[3]); 2853 EXPECT_POISONED(x[4]); 2854 EXPECT_POISONED(x[5]); 2855 EXPECT_NOT_POISONED(x[6]); 2856 EXPECT_NOT_POISONED(x[7]); 2857 EXPECT_NOT_POISONED(x[8]); 2858 EXPECT_POISONED(x[9]); 2859 EXPECT_NOT_POISONED(x[10]); 2860 EXPECT_POISONED(x[11]); 2861} 2862 2863TEST(MemorySanitizerDr, StoreInDSOTest) { 2864 if (!__msan_has_dynamic_component()) return; 2865 char* s = new char[10]; 2866 dso_memfill(s, 9); 2867 EXPECT_NOT_POISONED(s[5]); 2868 EXPECT_POISONED(s[9]); 2869} 2870 2871int return_poisoned_int() { 2872 return ReturnPoisoned<U8>(); 2873} 2874 2875TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2876 if (!__msan_has_dynamic_component()) return; 2877 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2878} 2879 2880NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2881 EXPECT_POISONED(x); 2882 EXPECT_POISONED(y); 2883 EXPECT_POISONED(z); 2884 return 0; 2885} 2886 2887static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2888 EXPECT_NOT_POISONED(x); 2889 EXPECT_NOT_POISONED(y); 2890 EXPECT_NOT_POISONED(z); 2891 return 0; 2892} 2893 2894TEST(MemorySanitizerDr, CallFromDSOTest) { 2895 if (!__msan_has_dynamic_component()) return; 2896 S8* x = GetPoisoned<S8>(); 2897 S8* y = GetPoisoned<S8>(); 2898 S8* z = GetPoisoned<S8>(); 2899 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2900 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2901} 2902 2903static void StackStoreInDSOFn(int* x, int* y) { 2904 EXPECT_NOT_POISONED(*x); 2905 EXPECT_NOT_POISONED(*y); 2906} 2907 2908TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2909 if (!__msan_has_dynamic_component()) return; 2910 dso_stack_store(StackStoreInDSOFn, 1); 2911} 2912 2913TEST(MemorySanitizerOrigins, SetGet) { 2914 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2915 if (!TrackingOrigins()) return; 2916 int x; 2917 __msan_set_origin(&x, sizeof(x), 1234); 2918 EXPECT_EQ(1234, __msan_get_origin(&x)); 2919 __msan_set_origin(&x, sizeof(x), 5678); 2920 EXPECT_EQ(5678, __msan_get_origin(&x)); 2921 __msan_set_origin(&x, sizeof(x), 0); 2922 EXPECT_EQ(0, __msan_get_origin(&x)); 2923} 2924 2925namespace { 2926struct S { 2927 U4 dummy; 2928 U2 a; 2929 U2 b; 2930}; 2931 2932// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2933TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2934 if (!TrackingOrigins()) return; 2935 2936 S s; 2937 U4 origin = rand(); // NOLINT 2938 s.a = *GetPoisonedO<U2>(0, origin); 2939 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2940 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2941 2942 s.b = 42; 2943 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2944 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2945} 2946} // namespace 2947 2948template<class T, class BinaryOp> 2949INLINE 2950void BinaryOpOriginTest(BinaryOp op) { 2951 U4 ox = rand(); //NOLINT 2952 U4 oy = rand(); //NOLINT 2953 T *x = GetPoisonedO<T>(0, ox, 0); 2954 T *y = GetPoisonedO<T>(1, oy, 0); 2955 T *z = GetPoisonedO<T>(2, 0, 0); 2956 2957 *z = op(*x, *y); 2958 U4 origin = __msan_get_origin(z); 2959 EXPECT_POISONED_O(*z, origin); 2960 EXPECT_EQ(true, origin == ox || origin == oy); 2961 2962 // y is poisoned, x is not. 2963 *x = 10101; 2964 *y = *GetPoisonedO<T>(1, oy); 2965 break_optimization(x); 2966 __msan_set_origin(z, sizeof(*z), 0); 2967 *z = op(*x, *y); 2968 EXPECT_POISONED_O(*z, oy); 2969 EXPECT_EQ(__msan_get_origin(z), oy); 2970 2971 // x is poisoned, y is not. 2972 *x = *GetPoisonedO<T>(0, ox); 2973 *y = 10101010; 2974 break_optimization(y); 2975 __msan_set_origin(z, sizeof(*z), 0); 2976 *z = op(*x, *y); 2977 EXPECT_POISONED_O(*z, ox); 2978 EXPECT_EQ(__msan_get_origin(z), ox); 2979} 2980 2981template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2982template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2983template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2984template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2985template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2986template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2987 2988TEST(MemorySanitizerOrigins, BinaryOp) { 2989 if (!TrackingOrigins()) return; 2990 BinaryOpOriginTest<S8>(XOR<S8>); 2991 BinaryOpOriginTest<U8>(ADD<U8>); 2992 BinaryOpOriginTest<S4>(SUB<S4>); 2993 BinaryOpOriginTest<S4>(MUL<S4>); 2994 BinaryOpOriginTest<U4>(OR<U4>); 2995 BinaryOpOriginTest<U4>(AND<U4>); 2996 BinaryOpOriginTest<double>(ADD<U4>); 2997 BinaryOpOriginTest<float>(ADD<S4>); 2998 BinaryOpOriginTest<double>(ADD<double>); 2999 BinaryOpOriginTest<float>(ADD<double>); 3000} 3001 3002TEST(MemorySanitizerOrigins, Unary) { 3003 if (!TrackingOrigins()) return; 3004 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3005 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3006 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3007 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3008 3009 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3010 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3011 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3012 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3013 3014 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3015 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3016 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3017 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3018 3019 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3020 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3021 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3022 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3023 3024 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3025 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 3026} 3027 3028TEST(MemorySanitizerOrigins, EQ) { 3029 if (!TrackingOrigins()) return; 3030 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 3031 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 3032 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 3033} 3034 3035TEST(MemorySanitizerOrigins, DIV) { 3036 if (!TrackingOrigins()) return; 3037 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 3038 unsigned o = __LINE__; 3039 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 3040} 3041 3042TEST(MemorySanitizerOrigins, SHIFT) { 3043 if (!TrackingOrigins()) return; 3044 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 3045 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 3046 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 3047 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 3048 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3049 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3050} 3051 3052template<class T, int N> 3053void MemCpyTest() { 3054 int ox = __LINE__; 3055 T *x = new T[N]; 3056 T *y = new T[N]; 3057 T *z = new T[N]; 3058 T *q = new T[N]; 3059 __msan_poison(x, N * sizeof(T)); 3060 __msan_set_origin(x, N * sizeof(T), ox); 3061 __msan_set_origin(y, N * sizeof(T), 777777); 3062 __msan_set_origin(z, N * sizeof(T), 888888); 3063 EXPECT_NOT_POISONED(x); 3064 memcpy(y, x, N * sizeof(T)); 3065 EXPECT_POISONED_O(y[0], ox); 3066 EXPECT_POISONED_O(y[N/2], ox); 3067 EXPECT_POISONED_O(y[N-1], ox); 3068 EXPECT_NOT_POISONED(x); 3069 void *res = mempcpy(q, x, N * sizeof(T)); 3070 ASSERT_EQ(q + N, res); 3071 EXPECT_POISONED_O(q[0], ox); 3072 EXPECT_POISONED_O(q[N/2], ox); 3073 EXPECT_POISONED_O(q[N-1], ox); 3074 EXPECT_NOT_POISONED(x); 3075 memmove(z, x, N * sizeof(T)); 3076 EXPECT_POISONED_O(z[0], ox); 3077 EXPECT_POISONED_O(z[N/2], ox); 3078 EXPECT_POISONED_O(z[N-1], ox); 3079} 3080 3081TEST(MemorySanitizerOrigins, LargeMemCpy) { 3082 if (!TrackingOrigins()) return; 3083 MemCpyTest<U1, 10000>(); 3084 MemCpyTest<U8, 10000>(); 3085} 3086 3087TEST(MemorySanitizerOrigins, SmallMemCpy) { 3088 if (!TrackingOrigins()) return; 3089 MemCpyTest<U8, 1>(); 3090 MemCpyTest<U8, 2>(); 3091 MemCpyTest<U8, 3>(); 3092} 3093 3094TEST(MemorySanitizerOrigins, Select) { 3095 if (!TrackingOrigins()) return; 3096 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 3097 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3098 S4 x; 3099 break_optimization(&x); 3100 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 3101 3102 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 3103 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 3104} 3105 3106extern "C" 3107NOINLINE char AllocaTO() { 3108 int ar[100]; 3109 break_optimization(ar); 3110 return ar[10]; 3111 // fprintf(stderr, "Descr: %s\n", 3112 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 3113} 3114 3115TEST(MemorySanitizerOrigins, Alloca) { 3116 if (!TrackingOrigins()) return; 3117 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3118 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3119 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3120 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3121} 3122 3123// FIXME: replace with a lit-like test. 3124TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 3125 if (!TrackingOrigins()) return; 3126 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 3127} 3128 3129NOINLINE int RetvalOriginTest(U4 origin) { 3130 int *a = new int; 3131 break_optimization(a); 3132 __msan_set_origin(a, sizeof(*a), origin); 3133 int res = *a; 3134 delete a; 3135 return res; 3136} 3137 3138TEST(MemorySanitizerOrigins, Retval) { 3139 if (!TrackingOrigins()) return; 3140 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3141} 3142 3143NOINLINE void ParamOriginTest(int param, U4 origin) { 3144 EXPECT_POISONED_O(param, origin); 3145} 3146 3147TEST(MemorySanitizerOrigins, Param) { 3148 if (!TrackingOrigins()) return; 3149 int *a = new int; 3150 U4 origin = __LINE__; 3151 break_optimization(a); 3152 __msan_set_origin(a, sizeof(*a), origin); 3153 ParamOriginTest(*a, origin); 3154 delete a; 3155} 3156 3157TEST(MemorySanitizerOrigins, Invoke) { 3158 if (!TrackingOrigins()) return; 3159 StructWithDtor s; // Will cause the calls to become invokes. 3160 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3161} 3162 3163TEST(MemorySanitizerOrigins, strlen) { 3164 S8 alignment; 3165 break_optimization(&alignment); 3166 char x[4] = {'a', 'b', 0, 0}; 3167 __msan_poison(&x[2], 1); 3168 U4 origin = __LINE__; 3169 __msan_set_origin(x, sizeof(x), origin); 3170 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 3171} 3172 3173TEST(MemorySanitizerOrigins, wcslen) { 3174 wchar_t w[3] = {'a', 'b', 0}; 3175 U4 origin = __LINE__; 3176 __msan_set_origin(w, sizeof(w), origin); 3177 __msan_poison(&w[2], sizeof(wchar_t)); 3178 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3179} 3180 3181#if MSAN_HAS_M128 3182TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3183 __m128 x, y; 3184 U4 origin = __LINE__; 3185 __msan_set_origin(&x, sizeof(x), origin); 3186 __msan_poison(&x, sizeof(x)); 3187 __builtin_ia32_storeups((float*)&y, x); 3188 EXPECT_POISONED_O(y, origin); 3189} 3190#endif 3191 3192NOINLINE void RecursiveMalloc(int depth) { 3193 static int count; 3194 count++; 3195 if ((count % (1024 * 1024)) == 0) 3196 printf("RecursiveMalloc: %d\n", count); 3197 int *x1 = new int; 3198 int *x2 = new int; 3199 break_optimization(x1); 3200 break_optimization(x2); 3201 if (depth > 0) { 3202 RecursiveMalloc(depth-1); 3203 RecursiveMalloc(depth-1); 3204 } 3205 delete x1; 3206 delete x2; 3207} 3208 3209TEST(MemorySanitizer, Select) { 3210 int x; 3211 int volatile* p = &x; 3212 int z = *p ? 1 : 0; 3213 EXPECT_POISONED(z); 3214} 3215 3216TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3217 RecursiveMalloc(22); 3218} 3219 3220TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3221 size_t sizes[] = {0, 20, 5000, 1<<20}; 3222 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3223 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3224 EXPECT_EQ(alloc_size, sizes[i]); 3225 } 3226} 3227 3228TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3229 char *array = reinterpret_cast<char*>(malloc(100)); 3230 int *int_ptr = new int; 3231 3232 EXPECT_TRUE(__msan_get_ownership(array)); 3233 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3234 3235 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3236 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3237 3238 void *wild_addr = reinterpret_cast<void*>(0x1); 3239 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3240 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3241 3242 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3243 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3244 3245 // NULL is a valid argument for GetAllocatedSize but is not owned. 3246 EXPECT_FALSE(__msan_get_ownership(NULL)); 3247 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3248 3249 free(array); 3250 EXPECT_FALSE(__msan_get_ownership(array)); 3251 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3252 3253 delete int_ptr; 3254} 3255