msan_test.cc revision 4197fa23ada9682343a15b68dde08c0249db172a
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#include <sys/ipc.h> 57#include <sys/shm.h> 58 59#if defined(__i386__) || defined(__x86_64__) 60# include <emmintrin.h> 61# define MSAN_HAS_M128 1 62#else 63# define MSAN_HAS_M128 0 64#endif 65 66static const int kPageSize = 4096; 67 68typedef unsigned char U1; 69typedef unsigned short U2; // NOLINT 70typedef unsigned int U4; 71typedef unsigned long long U8; // NOLINT 72typedef signed char S1; 73typedef signed short S2; // NOLINT 74typedef signed int S4; 75typedef signed long long S8; // NOLINT 76#define NOINLINE __attribute__((noinline)) 77#define INLINE __attribute__((always_inline)) 78 79static bool TrackingOrigins() { 80 S8 x; 81 __msan_set_origin(&x, sizeof(x), 0x1234); 82 U4 origin = __msan_get_origin(&x); 83 __msan_set_origin(&x, sizeof(x), 0); 84 return origin == 0x1234; 85} 86 87#define EXPECT_UMR(action) \ 88 do { \ 89 __msan_set_expect_umr(1); \ 90 action; \ 91 __msan_set_expect_umr(0); \ 92 } while (0) 93 94#define EXPECT_UMR_O(action, origin) \ 95 do { \ 96 __msan_set_expect_umr(1); \ 97 action; \ 98 __msan_set_expect_umr(0); \ 99 if (TrackingOrigins()) \ 100 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 101 } while (0) 102 103#define EXPECT_UMR_S(action, stack_origin) \ 104 do { \ 105 __msan_set_expect_umr(1); \ 106 action; \ 107 __msan_set_expect_umr(0); \ 108 U4 id = __msan_get_umr_origin(); \ 109 const char *str = __msan_get_origin_descr_if_stack(id); \ 110 if (!str || strcmp(str, stack_origin)) { \ 111 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 112 id, stack_origin, str); \ 113 EXPECT_EQ(1, 0); \ 114 } \ 115 } while (0) 116 117#define EXPECT_POISONED(x) ExpectPoisoned(x) 118 119template<typename T> 120void ExpectPoisoned(const T& t) { 121 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 122} 123 124#define EXPECT_POISONED_O(x, origin) \ 125 ExpectPoisonedWithOrigin(x, origin) 126 127template<typename T> 128void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 129 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 130 if (TrackingOrigins()) 131 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 132} 133 134#define EXPECT_POISONED_S(x, stack_origin) \ 135 ExpectPoisonedWithStackOrigin(x, stack_origin) 136 137template<typename T> 138void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 139 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 140 U4 id = __msan_get_origin((void*)&t); 141 const char *str = __msan_get_origin_descr_if_stack(id); 142 if (!str || strcmp(str, stack_origin)) { 143 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 144 id, stack_origin, str); 145 EXPECT_EQ(1, 0); 146 } 147} 148 149#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 150 151template<typename T> 152void ExpectNotPoisoned(const T& t) { 153 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 154} 155 156static U8 poisoned_array[100]; 157template<class T> 158T *GetPoisoned(int i = 0, T val = 0) { 159 T *res = (T*)&poisoned_array[i]; 160 *res = val; 161 __msan_poison(&poisoned_array[i], sizeof(T)); 162 return res; 163} 164 165template<class T> 166T *GetPoisonedO(int i, U4 origin, T val = 0) { 167 T *res = (T*)&poisoned_array[i]; 168 *res = val; 169 __msan_poison(&poisoned_array[i], sizeof(T)); 170 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 171 return res; 172} 173 174// This function returns its parameter but in such a way that compiler 175// can not prove it. 176template<class T> 177NOINLINE 178static T Ident(T t) { 179 volatile T ret = t; 180 return ret; 181} 182 183template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 184 185static volatile int g_one = 1; 186static volatile int g_zero = 0; 187static volatile int g_0 = 0; 188static volatile int g_1 = 1; 189 190S4 a_s4[100]; 191S8 a_s8[100]; 192 193// Check that malloc poisons memory. 194// A lot of tests below depend on this. 195TEST(MemorySanitizerSanity, PoisonInMalloc) { 196 int *x = (int*)malloc(sizeof(int)); 197 EXPECT_POISONED(*x); 198 free(x); 199} 200 201TEST(MemorySanitizer, NegativeTest1) { 202 S4 *x = GetPoisoned<S4>(); 203 if (g_one) 204 *x = 0; 205 EXPECT_NOT_POISONED(*x); 206} 207 208TEST(MemorySanitizer, PositiveTest1) { 209 // Load to store. 210 EXPECT_POISONED(*GetPoisoned<S1>()); 211 EXPECT_POISONED(*GetPoisoned<S2>()); 212 EXPECT_POISONED(*GetPoisoned<S4>()); 213 EXPECT_POISONED(*GetPoisoned<S8>()); 214 215 // S->S conversions. 216 EXPECT_POISONED(*GetPoisoned<S1>()); 217 EXPECT_POISONED(*GetPoisoned<S1>()); 218 EXPECT_POISONED(*GetPoisoned<S1>()); 219 220 EXPECT_POISONED(*GetPoisoned<S2>()); 221 EXPECT_POISONED(*GetPoisoned<S2>()); 222 EXPECT_POISONED(*GetPoisoned<S2>()); 223 224 EXPECT_POISONED(*GetPoisoned<S4>()); 225 EXPECT_POISONED(*GetPoisoned<S4>()); 226 EXPECT_POISONED(*GetPoisoned<S4>()); 227 228 EXPECT_POISONED(*GetPoisoned<S8>()); 229 EXPECT_POISONED(*GetPoisoned<S8>()); 230 EXPECT_POISONED(*GetPoisoned<S8>()); 231 232 // ZExt 233 EXPECT_POISONED(*GetPoisoned<U1>()); 234 EXPECT_POISONED(*GetPoisoned<U1>()); 235 EXPECT_POISONED(*GetPoisoned<U1>()); 236 EXPECT_POISONED(*GetPoisoned<U2>()); 237 EXPECT_POISONED(*GetPoisoned<U2>()); 238 EXPECT_POISONED(*GetPoisoned<U4>()); 239 240 // Unary ops. 241 EXPECT_POISONED(- *GetPoisoned<S4>()); 242 243 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 244 245 246 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 247 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 248} 249 250TEST(MemorySanitizer, Phi1) { 251 S4 c; 252 if (g_one) { 253 c = *GetPoisoned<S4>(); 254 } else { 255 break_optimization(0); 256 c = 0; 257 } 258 EXPECT_POISONED(c); 259} 260 261TEST(MemorySanitizer, Phi2) { 262 S4 i = *GetPoisoned<S4>(); 263 S4 n = g_one; 264 EXPECT_UMR(for (; i < g_one; i++);); 265 EXPECT_POISONED(i); 266} 267 268NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 269NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 270NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 271 272TEST(MemorySanitizer, ArgTest) { 273 Arg1ExpectUMR(*GetPoisoned<S4>()); 274 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 275 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 276} 277 278 279TEST(MemorySanitizer, CallAndRet) { 280 if (!__msan_has_dynamic_component()) return; 281 ReturnPoisoned<S1>(); 282 ReturnPoisoned<S2>(); 283 ReturnPoisoned<S4>(); 284 ReturnPoisoned<S8>(); 285 286 EXPECT_POISONED(ReturnPoisoned<S1>()); 287 EXPECT_POISONED(ReturnPoisoned<S2>()); 288 EXPECT_POISONED(ReturnPoisoned<S4>()); 289 EXPECT_POISONED(ReturnPoisoned<S8>()); 290} 291 292// malloc() in the following test may be optimized to produce a compile-time 293// undef value. Check that we trap on the volatile assignment anyway. 294TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 295 S4 *x = (int*)malloc(sizeof(S4)); 296 EXPECT_POISONED(*x); 297 free(x); 298} 299 300TEST(MemorySanitizer, Malloc) { 301 S4 *x = (int*)Ident(malloc(sizeof(S4))); 302 EXPECT_POISONED(*x); 303 free(x); 304} 305 306TEST(MemorySanitizer, Realloc) { 307 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 308 EXPECT_POISONED(x[0]); 309 x[0] = 1; 310 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 311 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 312 EXPECT_POISONED(x[1]); 313 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 314 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 315 EXPECT_POISONED(x[2]); 316 EXPECT_POISONED(x[1]); 317 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 318 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 319 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 320 EXPECT_POISONED(x[1]); 321 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 322 EXPECT_POISONED(x[1]); 323 EXPECT_POISONED(x[2]); 324 free(x); 325} 326 327TEST(MemorySanitizer, Calloc) { 328 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 329 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 330 // EXPECT_EQ(0, *x); 331 free(x); 332} 333 334TEST(MemorySanitizer, AndOr) { 335 U4 *p = GetPoisoned<U4>(); 336 // We poison two bytes in the midle of a 4-byte word to make the test 337 // correct regardless of endianness. 338 ((U1*)p)[1] = 0; 339 ((U1*)p)[2] = 0xff; 340 EXPECT_NOT_POISONED(*p & 0x00ffff00); 341 EXPECT_NOT_POISONED(*p & 0x00ff0000); 342 EXPECT_NOT_POISONED(*p & 0x0000ff00); 343 EXPECT_POISONED(*p & 0xff000000); 344 EXPECT_POISONED(*p & 0x000000ff); 345 EXPECT_POISONED(*p & 0x0000ffff); 346 EXPECT_POISONED(*p & 0xffff0000); 347 348 EXPECT_NOT_POISONED(*p | 0xff0000ff); 349 EXPECT_NOT_POISONED(*p | 0xff00ffff); 350 EXPECT_NOT_POISONED(*p | 0xffff00ff); 351 EXPECT_POISONED(*p | 0xff000000); 352 EXPECT_POISONED(*p | 0x000000ff); 353 EXPECT_POISONED(*p | 0x0000ffff); 354 EXPECT_POISONED(*p | 0xffff0000); 355 356 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 357} 358 359template<class T> 360static bool applyNot(T value, T shadow) { 361 __msan_partial_poison(&value, &shadow, sizeof(T)); 362 return !value; 363} 364 365TEST(MemorySanitizer, Not) { 366 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 367 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 368 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 369 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 370 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 371 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 372 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 373 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 374 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 375 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 376 377 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 378 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 379 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 380 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 381 382 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 383 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 384} 385 386TEST(MemorySanitizer, Shift) { 387 U4 *up = GetPoisoned<U4>(); 388 ((U1*)up)[0] = 0; 389 ((U1*)up)[3] = 0xff; 390 EXPECT_NOT_POISONED(*up >> 30); 391 EXPECT_NOT_POISONED(*up >> 24); 392 EXPECT_POISONED(*up >> 23); 393 EXPECT_POISONED(*up >> 10); 394 395 EXPECT_NOT_POISONED(*up << 30); 396 EXPECT_NOT_POISONED(*up << 24); 397 EXPECT_POISONED(*up << 23); 398 EXPECT_POISONED(*up << 10); 399 400 S4 *sp = (S4*)up; 401 EXPECT_NOT_POISONED(*sp >> 30); 402 EXPECT_NOT_POISONED(*sp >> 24); 403 EXPECT_POISONED(*sp >> 23); 404 EXPECT_POISONED(*sp >> 10); 405 406 sp = GetPoisoned<S4>(); 407 ((S1*)sp)[1] = 0; 408 ((S1*)sp)[2] = 0; 409 EXPECT_POISONED(*sp >> 31); 410 411 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 412 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 413} 414 415NOINLINE static int GetPoisonedZero() { 416 int *zero = new int; 417 *zero = 0; 418 __msan_poison(zero, sizeof(*zero)); 419 int res = *zero; 420 delete zero; 421 return res; 422} 423 424TEST(MemorySanitizer, LoadFromDirtyAddress) { 425 int *a = new int; 426 *a = 0; 427 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 428 delete a; 429} 430 431TEST(MemorySanitizer, StoreToDirtyAddress) { 432 int *a = new int; 433 EXPECT_UMR(a[GetPoisonedZero()] = 0); 434 break_optimization(a); 435 delete a; 436} 437 438 439NOINLINE void StackTestFunc() { 440 S4 p4; 441 S4 ok4 = 1; 442 S2 p2; 443 S2 ok2 = 1; 444 S1 p1; 445 S1 ok1 = 1; 446 break_optimization(&p4); 447 break_optimization(&ok4); 448 break_optimization(&p2); 449 break_optimization(&ok2); 450 break_optimization(&p1); 451 break_optimization(&ok1); 452 453 EXPECT_POISONED(p4); 454 EXPECT_POISONED(p2); 455 EXPECT_POISONED(p1); 456 EXPECT_NOT_POISONED(ok1); 457 EXPECT_NOT_POISONED(ok2); 458 EXPECT_NOT_POISONED(ok4); 459} 460 461TEST(MemorySanitizer, StackTest) { 462 StackTestFunc(); 463} 464 465NOINLINE void StackStressFunc() { 466 int foo[10000]; 467 break_optimization(foo); 468} 469 470TEST(MemorySanitizer, DISABLED_StackStressTest) { 471 for (int i = 0; i < 1000000; i++) 472 StackStressFunc(); 473} 474 475template<class T> 476void TestFloatingPoint() { 477 static volatile T v; 478 static T g[100]; 479 break_optimization(&g); 480 T *x = GetPoisoned<T>(); 481 T *y = GetPoisoned<T>(1); 482 EXPECT_POISONED(*x); 483 EXPECT_POISONED((long long)*x); 484 EXPECT_POISONED((int)*x); 485 g[0] = *x; 486 g[1] = *x + *y; 487 g[2] = *x - *y; 488 g[3] = *x * *y; 489} 490 491TEST(MemorySanitizer, FloatingPointTest) { 492 TestFloatingPoint<float>(); 493 TestFloatingPoint<double>(); 494} 495 496TEST(MemorySanitizer, DynMem) { 497 S4 x = 0; 498 S4 *y = GetPoisoned<S4>(); 499 memcpy(y, &x, g_one * sizeof(S4)); 500 EXPECT_NOT_POISONED(*y); 501} 502 503static char *DynRetTestStr; 504 505TEST(MemorySanitizer, DynRet) { 506 if (!__msan_has_dynamic_component()) return; 507 ReturnPoisoned<S8>(); 508 EXPECT_NOT_POISONED(clearenv()); 509} 510 511 512TEST(MemorySanitizer, DynRet1) { 513 if (!__msan_has_dynamic_component()) return; 514 ReturnPoisoned<S8>(); 515} 516 517struct LargeStruct { 518 S4 x[10]; 519}; 520 521NOINLINE 522LargeStruct LargeRetTest() { 523 LargeStruct res; 524 res.x[0] = *GetPoisoned<S4>(); 525 res.x[1] = *GetPoisoned<S4>(); 526 res.x[2] = *GetPoisoned<S4>(); 527 res.x[3] = *GetPoisoned<S4>(); 528 res.x[4] = *GetPoisoned<S4>(); 529 res.x[5] = *GetPoisoned<S4>(); 530 res.x[6] = *GetPoisoned<S4>(); 531 res.x[7] = *GetPoisoned<S4>(); 532 res.x[8] = *GetPoisoned<S4>(); 533 res.x[9] = *GetPoisoned<S4>(); 534 return res; 535} 536 537TEST(MemorySanitizer, strcmp) { 538 char s1[10]; 539 char s2[10]; 540 strncpy(s1, "foo", 10); 541 s2[0] = 'f'; 542 s2[1] = 'n'; 543 EXPECT_GT(strcmp(s1, s2), 0); 544 s2[1] = 'o'; 545 int res; 546 EXPECT_UMR(res = strcmp(s1, s2)); 547 EXPECT_NOT_POISONED(res); 548 EXPECT_EQ(strncmp(s1, s2, 1), 0); 549} 550 551TEST(MemorySanitizer, LargeRet) { 552 LargeStruct a = LargeRetTest(); 553 EXPECT_POISONED(a.x[0]); 554 EXPECT_POISONED(a.x[9]); 555} 556 557TEST(MemorySanitizer, strerror) { 558 char *buf = strerror(EINVAL); 559 EXPECT_NOT_POISONED(strlen(buf)); 560 buf = strerror(123456); 561 EXPECT_NOT_POISONED(strlen(buf)); 562} 563 564TEST(MemorySanitizer, strerror_r) { 565 errno = 0; 566 char buf[1000]; 567 char *res = strerror_r(EINVAL, buf, sizeof(buf)); 568 ASSERT_EQ(0, errno); 569 if (!res) res = buf; // POSIX version success. 570 EXPECT_NOT_POISONED(strlen(res)); 571} 572 573TEST(MemorySanitizer, fread) { 574 char *x = new char[32]; 575 FILE *f = fopen("/proc/self/stat", "r"); 576 assert(f); 577 fread(x, 1, 32, f); 578 EXPECT_NOT_POISONED(x[0]); 579 EXPECT_NOT_POISONED(x[16]); 580 EXPECT_NOT_POISONED(x[31]); 581 fclose(f); 582 delete x; 583} 584 585TEST(MemorySanitizer, read) { 586 char *x = new char[32]; 587 int fd = open("/proc/self/stat", O_RDONLY); 588 assert(fd > 0); 589 int sz = read(fd, x, 32); 590 assert(sz == 32); 591 EXPECT_NOT_POISONED(x[0]); 592 EXPECT_NOT_POISONED(x[16]); 593 EXPECT_NOT_POISONED(x[31]); 594 close(fd); 595 delete x; 596} 597 598TEST(MemorySanitizer, pread) { 599 char *x = new char[32]; 600 int fd = open("/proc/self/stat", O_RDONLY); 601 assert(fd > 0); 602 int sz = pread(fd, x, 32, 0); 603 assert(sz == 32); 604 EXPECT_NOT_POISONED(x[0]); 605 EXPECT_NOT_POISONED(x[16]); 606 EXPECT_NOT_POISONED(x[31]); 607 close(fd); 608 delete x; 609} 610 611TEST(MemorySanitizer, readv) { 612 char buf[2011]; 613 struct iovec iov[2]; 614 iov[0].iov_base = buf + 1; 615 iov[0].iov_len = 5; 616 iov[1].iov_base = buf + 10; 617 iov[1].iov_len = 2000; 618 int fd = open("/proc/self/stat", O_RDONLY); 619 assert(fd > 0); 620 int sz = readv(fd, iov, 2); 621 ASSERT_LT(sz, 5 + 2000); 622 ASSERT_GT(sz, iov[0].iov_len); 623 EXPECT_POISONED(buf[0]); 624 EXPECT_NOT_POISONED(buf[1]); 625 EXPECT_NOT_POISONED(buf[5]); 626 EXPECT_POISONED(buf[6]); 627 EXPECT_POISONED(buf[9]); 628 EXPECT_NOT_POISONED(buf[10]); 629 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 630 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 631 close(fd); 632} 633 634TEST(MemorySanitizer, preadv) { 635 char buf[2011]; 636 struct iovec iov[2]; 637 iov[0].iov_base = buf + 1; 638 iov[0].iov_len = 5; 639 iov[1].iov_base = buf + 10; 640 iov[1].iov_len = 2000; 641 int fd = open("/proc/self/stat", O_RDONLY); 642 assert(fd > 0); 643 int sz = preadv(fd, iov, 2, 3); 644 ASSERT_LT(sz, 5 + 2000); 645 ASSERT_GT(sz, iov[0].iov_len); 646 EXPECT_POISONED(buf[0]); 647 EXPECT_NOT_POISONED(buf[1]); 648 EXPECT_NOT_POISONED(buf[5]); 649 EXPECT_POISONED(buf[6]); 650 EXPECT_POISONED(buf[9]); 651 EXPECT_NOT_POISONED(buf[10]); 652 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 653 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 654 close(fd); 655} 656 657// FIXME: fails now. 658TEST(MemorySanitizer, DISABLED_ioctl) { 659 struct winsize ws; 660 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 661 EXPECT_NOT_POISONED(ws.ws_col); 662} 663 664TEST(MemorySanitizer, readlink) { 665 char *x = new char[1000]; 666 readlink("/proc/self/exe", x, 1000); 667 EXPECT_NOT_POISONED(x[0]); 668 delete [] x; 669} 670 671 672TEST(MemorySanitizer, stat) { 673 struct stat* st = new struct stat; 674 int res = stat("/proc/self/stat", st); 675 assert(!res); 676 EXPECT_NOT_POISONED(st->st_dev); 677 EXPECT_NOT_POISONED(st->st_mode); 678 EXPECT_NOT_POISONED(st->st_size); 679} 680 681TEST(MemorySanitizer, fstatat) { 682 struct stat* st = new struct stat; 683 int dirfd = open("/proc/self", O_RDONLY); 684 assert(dirfd > 0); 685 int res = fstatat(dirfd, "stat", st, 0); 686 assert(!res); 687 EXPECT_NOT_POISONED(st->st_dev); 688 EXPECT_NOT_POISONED(st->st_mode); 689 EXPECT_NOT_POISONED(st->st_size); 690 close(dirfd); 691} 692 693TEST(MemorySanitizer, statfs) { 694 struct statfs st; 695 int res = statfs("/", &st); 696 assert(!res); 697 EXPECT_NOT_POISONED(st.f_type); 698 EXPECT_NOT_POISONED(st.f_bfree); 699 EXPECT_NOT_POISONED(st.f_namelen); 700} 701 702TEST(MemorySanitizer, statvfs) { 703 struct statvfs st; 704 int res = statvfs("/", &st); 705 assert(!res); 706 EXPECT_NOT_POISONED(st.f_bsize); 707 EXPECT_NOT_POISONED(st.f_blocks); 708 EXPECT_NOT_POISONED(st.f_bfree); 709 EXPECT_NOT_POISONED(st.f_namemax); 710} 711 712TEST(MemorySanitizer, fstatvfs) { 713 struct statvfs st; 714 int fd = open("/", O_RDONLY | O_DIRECTORY); 715 int res = fstatvfs(fd, &st); 716 assert(!res); 717 EXPECT_NOT_POISONED(st.f_bsize); 718 EXPECT_NOT_POISONED(st.f_blocks); 719 EXPECT_NOT_POISONED(st.f_bfree); 720 EXPECT_NOT_POISONED(st.f_namemax); 721 close(fd); 722} 723 724TEST(MemorySanitizer, pipe) { 725 int* pipefd = new int[2]; 726 int res = pipe(pipefd); 727 assert(!res); 728 EXPECT_NOT_POISONED(pipefd[0]); 729 EXPECT_NOT_POISONED(pipefd[1]); 730 close(pipefd[0]); 731 close(pipefd[1]); 732} 733 734TEST(MemorySanitizer, pipe2) { 735 int* pipefd = new int[2]; 736 int res = pipe2(pipefd, O_NONBLOCK); 737 assert(!res); 738 EXPECT_NOT_POISONED(pipefd[0]); 739 EXPECT_NOT_POISONED(pipefd[1]); 740 close(pipefd[0]); 741 close(pipefd[1]); 742} 743 744TEST(MemorySanitizer, socketpair) { 745 int sv[2]; 746 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 747 assert(!res); 748 EXPECT_NOT_POISONED(sv[0]); 749 EXPECT_NOT_POISONED(sv[1]); 750 close(sv[0]); 751 close(sv[1]); 752} 753 754TEST(MemorySanitizer, poll) { 755 int* pipefd = new int[2]; 756 int res = pipe(pipefd); 757 ASSERT_EQ(0, res); 758 759 char data = 42; 760 res = write(pipefd[1], &data, 1); 761 ASSERT_EQ(1, res); 762 763 pollfd fds[2]; 764 fds[0].fd = pipefd[0]; 765 fds[0].events = POLLIN; 766 fds[1].fd = pipefd[1]; 767 fds[1].events = POLLIN; 768 res = poll(fds, 2, 500); 769 ASSERT_EQ(1, res); 770 EXPECT_NOT_POISONED(fds[0].revents); 771 EXPECT_NOT_POISONED(fds[1].revents); 772 773 close(pipefd[0]); 774 close(pipefd[1]); 775} 776 777TEST(MemorySanitizer, ppoll) { 778 int* pipefd = new int[2]; 779 int res = pipe(pipefd); 780 ASSERT_EQ(0, res); 781 782 char data = 42; 783 res = write(pipefd[1], &data, 1); 784 ASSERT_EQ(1, res); 785 786 pollfd fds[2]; 787 fds[0].fd = pipefd[0]; 788 fds[0].events = POLLIN; 789 fds[1].fd = pipefd[1]; 790 fds[1].events = POLLIN; 791 sigset_t ss; 792 sigemptyset(&ss); 793 res = ppoll(fds, 2, NULL, &ss); 794 ASSERT_EQ(1, res); 795 EXPECT_NOT_POISONED(fds[0].revents); 796 EXPECT_NOT_POISONED(fds[1].revents); 797 798 close(pipefd[0]); 799 close(pipefd[1]); 800} 801 802TEST(MemorySanitizer, poll_positive) { 803 int* pipefd = new int[2]; 804 int res = pipe(pipefd); 805 ASSERT_EQ(0, res); 806 807 pollfd fds[2]; 808 fds[0].fd = pipefd[0]; 809 fds[0].events = POLLIN; 810 // fds[1].fd uninitialized 811 fds[1].events = POLLIN; 812 EXPECT_UMR(poll(fds, 2, 0)); 813 814 close(pipefd[0]); 815 close(pipefd[1]); 816} 817 818TEST(MemorySanitizer, bind_getsockname) { 819 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 820 821 struct sockaddr_in sai; 822 memset(&sai, 0, sizeof(sai)); 823 sai.sin_family = AF_UNIX; 824 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 825 826 assert(!res); 827 char buf[200]; 828 socklen_t addrlen; 829 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 830 831 addrlen = sizeof(buf); 832 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 833 EXPECT_NOT_POISONED(addrlen); 834 EXPECT_NOT_POISONED(buf[0]); 835 EXPECT_NOT_POISONED(buf[addrlen - 1]); 836 EXPECT_POISONED(buf[addrlen]); 837 close(sock); 838} 839 840TEST(MemorySanitizer, accept) { 841 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 842 ASSERT_LT(0, listen_socket); 843 844 struct sockaddr_in sai; 845 memset(&sai, 0, sizeof(sai)); 846 sai.sin_family = AF_INET; 847 sai.sin_port = 0; 848 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 849 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 850 ASSERT_EQ(0, res); 851 852 res = listen(listen_socket, 1); 853 ASSERT_EQ(0, res); 854 855 socklen_t sz = sizeof(sai); 856 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 857 ASSERT_EQ(0, res); 858 ASSERT_EQ(sizeof(sai), sz); 859 860 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 861 ASSERT_LT(0, connect_socket); 862 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 863 ASSERT_EQ(0, res); 864 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 865 ASSERT_EQ(-1, res); 866 ASSERT_EQ(EINPROGRESS, errno); 867 868 __msan_poison(&sai, sizeof(sai)); 869 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 870 ASSERT_LT(0, new_sock); 871 ASSERT_EQ(sizeof(sai), sz); 872 EXPECT_NOT_POISONED(sai); 873 874 __msan_poison(&sai, sizeof(sai)); 875 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 876 ASSERT_EQ(0, res); 877 ASSERT_EQ(sizeof(sai), sz); 878 EXPECT_NOT_POISONED(sai); 879 880 close(new_sock); 881 close(connect_socket); 882 close(listen_socket); 883} 884 885TEST(MemorySanitizer, getaddrinfo) { 886 struct addrinfo *ai; 887 struct addrinfo hints; 888 memset(&hints, 0, sizeof(hints)); 889 hints.ai_family = AF_INET; 890 int res = getaddrinfo("localhost", NULL, &hints, &ai); 891 ASSERT_EQ(0, res); 892 EXPECT_NOT_POISONED(*ai); 893 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 894 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 895} 896 897TEST(MemorySanitizer, getnameinfo) { 898 struct sockaddr_in sai; 899 memset(&sai, 0, sizeof(sai)); 900 sai.sin_family = AF_INET; 901 sai.sin_port = 80; 902 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 903 char host[500]; 904 char serv[500]; 905 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 906 sizeof(host), serv, sizeof(serv), 0); 907 ASSERT_EQ(0, res); 908 EXPECT_NOT_POISONED(host[0]); 909 EXPECT_POISONED(host[sizeof(host) - 1]); 910 911 ASSERT_NE(0, strlen(host)); 912 EXPECT_NOT_POISONED(serv[0]); 913 EXPECT_POISONED(serv[sizeof(serv) - 1]); 914 ASSERT_NE(0, strlen(serv)); 915} 916 917#define EXPECT_HOSTENT_NOT_POISONED(he) \ 918 do { \ 919 EXPECT_NOT_POISONED(*(he)); \ 920 ASSERT_NE((void *) 0, (he)->h_name); \ 921 ASSERT_NE((void *) 0, (he)->h_aliases); \ 922 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 923 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 924 char **p = (he)->h_aliases; \ 925 while (*p) { \ 926 EXPECT_NOT_POISONED(strlen(*p)); \ 927 ++p; \ 928 } \ 929 char **q = (he)->h_addr_list; \ 930 while (*q) { \ 931 EXPECT_NOT_POISONED(*q[0]); \ 932 ++q; \ 933 } \ 934 EXPECT_NOT_POISONED(*q); \ 935 } while (0) 936 937TEST(MemorySanitizer, gethostent) { 938 struct hostent *he = gethostent(); 939 ASSERT_NE((void *)NULL, he); 940 EXPECT_HOSTENT_NOT_POISONED(he); 941} 942 943#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 944 945TEST(MemorySanitizer, gethostbyname) { 946 struct hostent *he = gethostbyname("localhost"); 947 ASSERT_NE((void *)NULL, he); 948 EXPECT_HOSTENT_NOT_POISONED(he); 949} 950 951#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 952 953TEST(MemorySanitizer, recvmsg) { 954 int server_socket = socket(AF_INET, SOCK_DGRAM, 0); 955 ASSERT_LT(0, server_socket); 956 957 struct sockaddr_in sai; 958 memset(&sai, 0, sizeof(sai)); 959 sai.sin_family = AF_INET; 960 sai.sin_port = 0; 961 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 962 int res = bind(server_socket, (struct sockaddr *)&sai, sizeof(sai)); 963 ASSERT_EQ(0, res); 964 965 socklen_t sz = sizeof(sai); 966 res = getsockname(server_socket, (struct sockaddr *)&sai, &sz); 967 ASSERT_EQ(0, res); 968 ASSERT_EQ(sizeof(sai), sz); 969 970 971 int client_socket = socket(AF_INET, SOCK_DGRAM, 0); 972 ASSERT_LT(0, client_socket); 973 974 struct sockaddr_in client_sai; 975 memset(&client_sai, 0, sizeof(client_sai)); 976 client_sai.sin_family = AF_INET; 977 client_sai.sin_port = 0; 978 client_sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 979 res = bind(client_socket, (struct sockaddr *)&client_sai, sizeof(client_sai)); 980 ASSERT_EQ(0, res); 981 982 sz = sizeof(client_sai); 983 res = getsockname(client_socket, (struct sockaddr *)&client_sai, &sz); 984 ASSERT_EQ(0, res); 985 ASSERT_EQ(sizeof(client_sai), sz); 986 987 988 const char *s = "message text"; 989 struct iovec iov; 990 iov.iov_base = (void *)s; 991 iov.iov_len = strlen(s) + 1; 992 struct msghdr msg; 993 memset(&msg, 0, sizeof(msg)); 994 msg.msg_name = &sai; 995 msg.msg_namelen = sizeof(sai); 996 msg.msg_iov = &iov; 997 msg.msg_iovlen = 1; 998 res = sendmsg(client_socket, &msg, 0); 999 ASSERT_LT(0, res); 1000 1001 1002 char buf[1000]; 1003 struct iovec recv_iov; 1004 recv_iov.iov_base = (void *)&buf; 1005 recv_iov.iov_len = sizeof(buf); 1006 struct sockaddr_in recv_sai; 1007 struct msghdr recv_msg; 1008 memset(&recv_msg, 0, sizeof(recv_msg)); 1009 recv_msg.msg_name = &recv_sai; 1010 recv_msg.msg_namelen = sizeof(recv_sai); 1011 recv_msg.msg_iov = &recv_iov; 1012 recv_msg.msg_iovlen = 1; 1013 res = recvmsg(server_socket, &recv_msg, 0); 1014 ASSERT_LT(0, res); 1015 1016 ASSERT_EQ(sizeof(recv_sai), recv_msg.msg_namelen); 1017 EXPECT_NOT_POISONED(*(struct sockaddr_in *)recv_msg.msg_name); 1018 EXPECT_STREQ(s, buf); 1019 1020 close(server_socket); 1021 close(client_socket); 1022} 1023 1024TEST(MemorySanitizer, gethostbyname2) { 1025 struct hostent *he = gethostbyname2("localhost", AF_INET); 1026 ASSERT_NE((void *)NULL, he); 1027 EXPECT_HOSTENT_NOT_POISONED(he); 1028} 1029 1030TEST(MemorySanitizer, gethostbyaddr) { 1031 in_addr_t addr = inet_addr("127.0.0.1"); 1032 EXPECT_NOT_POISONED(addr); 1033 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 1034 ASSERT_NE((void *)NULL, he); 1035 EXPECT_HOSTENT_NOT_POISONED(he); 1036} 1037 1038TEST(MemorySanitizer, gethostent_r) { 1039 char buf[2000]; 1040 struct hostent he; 1041 struct hostent *result; 1042 int err; 1043 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 1044 ASSERT_EQ(0, res); 1045 EXPECT_NOT_POISONED(result); 1046 ASSERT_NE((void *)NULL, result); 1047 EXPECT_HOSTENT_NOT_POISONED(result); 1048 EXPECT_NOT_POISONED(err); 1049} 1050 1051TEST(MemorySanitizer, gethostbyname_r) { 1052 char buf[2000]; 1053 struct hostent he; 1054 struct hostent *result; 1055 int err; 1056 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 1057 ASSERT_EQ(0, res); 1058 EXPECT_NOT_POISONED(result); 1059 ASSERT_NE((void *)NULL, result); 1060 EXPECT_HOSTENT_NOT_POISONED(result); 1061 EXPECT_NOT_POISONED(err); 1062} 1063 1064TEST(MemorySanitizer, gethostbyname2_r) { 1065 char buf[2000]; 1066 struct hostent he; 1067 struct hostent *result; 1068 int err; 1069 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 1070 &result, &err); 1071 ASSERT_EQ(0, res); 1072 EXPECT_NOT_POISONED(result); 1073 ASSERT_NE((void *)NULL, result); 1074 EXPECT_HOSTENT_NOT_POISONED(result); 1075 EXPECT_NOT_POISONED(err); 1076} 1077 1078TEST(MemorySanitizer, gethostbyaddr_r) { 1079 char buf[2000]; 1080 struct hostent he; 1081 struct hostent *result; 1082 int err; 1083 in_addr_t addr = inet_addr("127.0.0.1"); 1084 EXPECT_NOT_POISONED(addr); 1085 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 1086 &result, &err); 1087 ASSERT_EQ(0, res); 1088 EXPECT_NOT_POISONED(result); 1089 ASSERT_NE((void *)NULL, result); 1090 EXPECT_HOSTENT_NOT_POISONED(result); 1091 EXPECT_NOT_POISONED(err); 1092} 1093 1094TEST(MemorySanitizer, getsockopt) { 1095 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 1096 struct linger l[2]; 1097 socklen_t sz = sizeof(l[0]); 1098 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 1099 ASSERT_EQ(0, res); 1100 ASSERT_EQ(sizeof(l[0]), sz); 1101 EXPECT_NOT_POISONED(l[0]); 1102 EXPECT_POISONED(*(char *)(l + 1)); 1103} 1104 1105TEST(MemorySanitizer, getcwd) { 1106 char path[PATH_MAX + 1]; 1107 char* res = getcwd(path, sizeof(path)); 1108 assert(res); 1109 EXPECT_NOT_POISONED(path[0]); 1110} 1111 1112TEST(MemorySanitizer, getcwd_gnu) { 1113 char* res = getcwd(NULL, 0); 1114 assert(res); 1115 EXPECT_NOT_POISONED(res[0]); 1116 free(res); 1117} 1118 1119TEST(MemorySanitizer, get_current_dir_name) { 1120 char* res = get_current_dir_name(); 1121 assert(res); 1122 EXPECT_NOT_POISONED(res[0]); 1123 free(res); 1124} 1125 1126TEST(MemorySanitizer, shmctl) { 1127 int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT); 1128 ASSERT_GT(id, -1); 1129 1130 struct shmid_ds ds; 1131 int res = shmctl(id, IPC_STAT, &ds); 1132 ASSERT_GT(res, -1); 1133 EXPECT_NOT_POISONED(ds); 1134 1135 struct shminfo si; 1136 res = shmctl(id, IPC_INFO, (struct shmid_ds *)&si); 1137 ASSERT_GT(res, -1); 1138 EXPECT_NOT_POISONED(si); 1139 1140 struct shm_info s_i; 1141 res = shmctl(id, SHM_INFO, (struct shmid_ds *)&s_i); 1142 ASSERT_GT(res, -1); 1143 EXPECT_NOT_POISONED(s_i); 1144 1145 res = shmctl(id, IPC_RMID, 0); 1146 ASSERT_GT(res, -1); 1147} 1148 1149TEST(MemorySanitizer, shmat) { 1150 void *p = mmap(NULL, 4096, PROT_READ | PROT_WRITE, 1151 MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); 1152 ASSERT_NE(MAP_FAILED, p); 1153 1154 ((char *)p)[10] = *GetPoisoned<U1>(); 1155 ((char *)p)[4095] = *GetPoisoned<U1>(); 1156 1157 int res = munmap(p, 4096); 1158 ASSERT_EQ(0, res); 1159 1160 int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT); 1161 ASSERT_GT(id, -1); 1162 1163 void *q = shmat(id, p, 0); 1164 ASSERT_EQ(p, q); 1165 1166 EXPECT_NOT_POISONED(((char *)q)[0]); 1167 EXPECT_NOT_POISONED(((char *)q)[10]); 1168 EXPECT_NOT_POISONED(((char *)q)[4095]); 1169 1170 res = shmdt(q); 1171 ASSERT_EQ(0, res); 1172 1173 res = shmctl(id, IPC_RMID, 0); 1174 ASSERT_GT(res, -1); 1175} 1176 1177TEST(MemorySanitizer, random_r) { 1178 int32_t x; 1179 char z[64]; 1180 memset(z, 0, sizeof(z)); 1181 1182 struct random_data buf; 1183 memset(&buf, 0, sizeof(buf)); 1184 1185 int res = initstate_r(0, z, sizeof(z), &buf); 1186 ASSERT_EQ(0, res); 1187 1188 res = random_r(&buf, &x); 1189 ASSERT_EQ(0, res); 1190 EXPECT_NOT_POISONED(x); 1191} 1192 1193TEST(MemorySanitizer, confstr) { 1194 char buf[3]; 1195 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1196 ASSERT_GT(res, sizeof(buf)); 1197 EXPECT_NOT_POISONED(buf[0]); 1198 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1199 1200 char buf2[1000]; 1201 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1202 ASSERT_LT(res, sizeof(buf2)); 1203 EXPECT_NOT_POISONED(buf2[0]); 1204 EXPECT_NOT_POISONED(buf2[res - 1]); 1205 EXPECT_POISONED(buf2[res]); 1206 ASSERT_EQ(res, strlen(buf2) + 1); 1207} 1208 1209TEST(MemorySanitizer, readdir) { 1210 DIR *dir = opendir("."); 1211 struct dirent *d = readdir(dir); 1212 assert(d); 1213 EXPECT_NOT_POISONED(d->d_name[0]); 1214 closedir(dir); 1215} 1216 1217TEST(MemorySanitizer, readdir_r) { 1218 DIR *dir = opendir("."); 1219 struct dirent d; 1220 struct dirent *pd; 1221 int res = readdir_r(dir, &d, &pd); 1222 assert(!res); 1223 EXPECT_NOT_POISONED(pd); 1224 EXPECT_NOT_POISONED(d.d_name[0]); 1225 closedir(dir); 1226} 1227 1228TEST(MemorySanitizer, realpath) { 1229 const char* relpath = "."; 1230 char path[PATH_MAX + 1]; 1231 char* res = realpath(relpath, path); 1232 assert(res); 1233 EXPECT_NOT_POISONED(path[0]); 1234} 1235 1236TEST(MemorySanitizer, realpath_null) { 1237 const char* relpath = "."; 1238 char* res = realpath(relpath, NULL); 1239 printf("%d, %s\n", errno, strerror(errno)); 1240 assert(res); 1241 EXPECT_NOT_POISONED(res[0]); 1242 free(res); 1243} 1244 1245TEST(MemorySanitizer, canonicalize_file_name) { 1246 const char* relpath = "."; 1247 char* res = canonicalize_file_name(relpath); 1248 assert(res); 1249 EXPECT_NOT_POISONED(res[0]); 1250 free(res); 1251} 1252 1253extern char **environ; 1254 1255TEST(MemorySanitizer, setenv) { 1256 setenv("AAA", "BBB", 1); 1257 for (char **envp = environ; *envp; ++envp) { 1258 EXPECT_NOT_POISONED(*envp); 1259 EXPECT_NOT_POISONED(*envp[0]); 1260 } 1261} 1262 1263TEST(MemorySanitizer, putenv) { 1264 char s[] = "AAA=BBB"; 1265 putenv(s); 1266 for (char **envp = environ; *envp; ++envp) { 1267 EXPECT_NOT_POISONED(*envp); 1268 EXPECT_NOT_POISONED(*envp[0]); 1269 } 1270} 1271 1272TEST(MemorySanitizer, memcpy) { 1273 char* x = new char[2]; 1274 char* y = new char[2]; 1275 x[0] = 1; 1276 x[1] = *GetPoisoned<char>(); 1277 memcpy(y, x, 2); 1278 EXPECT_NOT_POISONED(y[0]); 1279 EXPECT_POISONED(y[1]); 1280} 1281 1282void TestUnalignedMemcpy(int left, int right, bool src_is_aligned) { 1283 const int sz = 20; 1284 char *dst = (char *)malloc(sz); 1285 U4 origin = __msan_get_origin(dst); 1286 1287 char *src = (char *)malloc(sz); 1288 memset(src, 0, sz); 1289 1290 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); 1291 for (int i = 0; i < left; ++i) 1292 EXPECT_POISONED_O(dst[i], origin); 1293 for (int i = 0; i < right; ++i) 1294 EXPECT_POISONED_O(dst[sz - i - 1], origin); 1295 EXPECT_NOT_POISONED(dst[left]); 1296 EXPECT_NOT_POISONED(dst[sz - right - 1]); 1297 1298 free(dst); 1299 free(src); 1300} 1301 1302TEST(MemorySanitizer, memcpy_unaligned) { 1303 for (int i = 0; i < 10; ++i) { 1304 for (int j = 0; j < 10; ++j) { 1305 TestUnalignedMemcpy(i, j, true); 1306 TestUnalignedMemcpy(i, j, false); 1307 } 1308 } 1309} 1310 1311TEST(MemorySanitizer, memmove) { 1312 char* x = new char[2]; 1313 char* y = new char[2]; 1314 x[0] = 1; 1315 x[1] = *GetPoisoned<char>(); 1316 memmove(y, x, 2); 1317 EXPECT_NOT_POISONED(y[0]); 1318 EXPECT_POISONED(y[1]); 1319} 1320 1321TEST(MemorySanitizer, memccpy_nomatch) { 1322 char* x = new char[5]; 1323 char* y = new char[5]; 1324 strcpy(x, "abc"); 1325 memccpy(y, x, 'd', 4); 1326 EXPECT_NOT_POISONED(y[0]); 1327 EXPECT_NOT_POISONED(y[1]); 1328 EXPECT_NOT_POISONED(y[2]); 1329 EXPECT_NOT_POISONED(y[3]); 1330 EXPECT_POISONED(y[4]); 1331 delete[] x; 1332 delete[] y; 1333} 1334 1335TEST(MemorySanitizer, memccpy_match) { 1336 char* x = new char[5]; 1337 char* y = new char[5]; 1338 strcpy(x, "abc"); 1339 memccpy(y, x, 'b', 4); 1340 EXPECT_NOT_POISONED(y[0]); 1341 EXPECT_NOT_POISONED(y[1]); 1342 EXPECT_POISONED(y[2]); 1343 EXPECT_POISONED(y[3]); 1344 EXPECT_POISONED(y[4]); 1345 delete[] x; 1346 delete[] y; 1347} 1348 1349TEST(MemorySanitizer, memccpy_nomatch_positive) { 1350 char* x = new char[5]; 1351 char* y = new char[5]; 1352 strcpy(x, "abc"); 1353 EXPECT_UMR(memccpy(y, x, 'd', 5)); 1354 delete[] x; 1355 delete[] y; 1356} 1357 1358TEST(MemorySanitizer, memccpy_match_positive) { 1359 char* x = new char[5]; 1360 char* y = new char[5]; 1361 x[0] = 'a'; 1362 x[2] = 'b'; 1363 EXPECT_UMR(memccpy(y, x, 'b', 5)); 1364 delete[] x; 1365 delete[] y; 1366} 1367 1368TEST(MemorySanitizer, bcopy) { 1369 char* x = new char[2]; 1370 char* y = new char[2]; 1371 x[0] = 1; 1372 x[1] = *GetPoisoned<char>(); 1373 bcopy(x, y, 2); 1374 EXPECT_NOT_POISONED(y[0]); 1375 EXPECT_POISONED(y[1]); 1376} 1377 1378TEST(MemorySanitizer, strdup) { 1379 char buf[4] = "abc"; 1380 __msan_poison(buf + 2, sizeof(*buf)); 1381 char *x = strdup(buf); 1382 EXPECT_NOT_POISONED(x[0]); 1383 EXPECT_NOT_POISONED(x[1]); 1384 EXPECT_POISONED(x[2]); 1385 EXPECT_NOT_POISONED(x[3]); 1386 free(x); 1387} 1388 1389TEST(MemorySanitizer, strndup) { 1390 char buf[4] = "abc"; 1391 __msan_poison(buf + 2, sizeof(*buf)); 1392 char *x = strndup(buf, 3); 1393 EXPECT_NOT_POISONED(x[0]); 1394 EXPECT_NOT_POISONED(x[1]); 1395 EXPECT_POISONED(x[2]); 1396 EXPECT_NOT_POISONED(x[3]); 1397 free(x); 1398} 1399 1400TEST(MemorySanitizer, strndup_short) { 1401 char buf[4] = "abc"; 1402 __msan_poison(buf + 1, sizeof(*buf)); 1403 __msan_poison(buf + 2, sizeof(*buf)); 1404 char *x = strndup(buf, 2); 1405 EXPECT_NOT_POISONED(x[0]); 1406 EXPECT_POISONED(x[1]); 1407 EXPECT_NOT_POISONED(x[2]); 1408 free(x); 1409} 1410 1411 1412template<class T, int size> 1413void TestOverlapMemmove() { 1414 T *x = new T[size]; 1415 assert(size >= 3); 1416 x[2] = 0; 1417 memmove(x, x + 1, (size - 1) * sizeof(T)); 1418 EXPECT_NOT_POISONED(x[1]); 1419 if (!__msan_has_dynamic_component()) { 1420 // FIXME: under DR we will lose this information 1421 // because accesses in memmove will unpoisin the shadow. 1422 // We need to use our own memove implementation instead of libc's. 1423 EXPECT_POISONED(x[0]); 1424 EXPECT_POISONED(x[2]); 1425 } 1426 delete [] x; 1427} 1428 1429TEST(MemorySanitizer, overlap_memmove) { 1430 TestOverlapMemmove<U1, 10>(); 1431 TestOverlapMemmove<U1, 1000>(); 1432 TestOverlapMemmove<U8, 4>(); 1433 TestOverlapMemmove<U8, 1000>(); 1434} 1435 1436TEST(MemorySanitizer, strcpy) { // NOLINT 1437 char* x = new char[3]; 1438 char* y = new char[3]; 1439 x[0] = 'a'; 1440 x[1] = *GetPoisoned<char>(1, 1); 1441 x[2] = 0; 1442 strcpy(y, x); // NOLINT 1443 EXPECT_NOT_POISONED(y[0]); 1444 EXPECT_POISONED(y[1]); 1445 EXPECT_NOT_POISONED(y[2]); 1446} 1447 1448TEST(MemorySanitizer, strncpy) { // NOLINT 1449 char* x = new char[3]; 1450 char* y = new char[3]; 1451 x[0] = 'a'; 1452 x[1] = *GetPoisoned<char>(1, 1); 1453 x[2] = 0; 1454 strncpy(y, x, 2); // NOLINT 1455 EXPECT_NOT_POISONED(y[0]); 1456 EXPECT_POISONED(y[1]); 1457 EXPECT_POISONED(y[2]); 1458} 1459 1460TEST(MemorySanitizer, stpcpy) { // NOLINT 1461 char* x = new char[3]; 1462 char* y = new char[3]; 1463 x[0] = 'a'; 1464 x[1] = *GetPoisoned<char>(1, 1); 1465 x[2] = 0; 1466 char *res = stpcpy(y, x); // NOLINT 1467 ASSERT_EQ(res, y + 2); 1468 EXPECT_NOT_POISONED(y[0]); 1469 EXPECT_POISONED(y[1]); 1470 EXPECT_NOT_POISONED(y[2]); 1471} 1472 1473TEST(MemorySanitizer, strtol) { 1474 char *e; 1475 assert(1 == strtol("1", &e, 10)); 1476 EXPECT_NOT_POISONED((S8) e); 1477} 1478 1479TEST(MemorySanitizer, strtoll) { 1480 char *e; 1481 assert(1 == strtoll("1", &e, 10)); 1482 EXPECT_NOT_POISONED((S8) e); 1483} 1484 1485TEST(MemorySanitizer, strtoul) { 1486 char *e; 1487 assert(1 == strtoul("1", &e, 10)); 1488 EXPECT_NOT_POISONED((S8) e); 1489} 1490 1491TEST(MemorySanitizer, strtoull) { 1492 char *e; 1493 assert(1 == strtoull("1", &e, 10)); 1494 EXPECT_NOT_POISONED((S8) e); 1495} 1496 1497TEST(MemorySanitizer, strtoimax) { 1498 char *e; 1499 assert(1 == strtoimax("1", &e, 10)); 1500 EXPECT_NOT_POISONED((S8) e); 1501} 1502 1503TEST(MemorySanitizer, strtoumax) { 1504 char *e; 1505 assert(1 == strtoumax("1", &e, 10)); 1506 EXPECT_NOT_POISONED((S8) e); 1507} 1508 1509TEST(MemorySanitizer, strtod) { 1510 char *e; 1511 assert(0 != strtod("1.5", &e)); 1512 EXPECT_NOT_POISONED((S8) e); 1513} 1514 1515#ifdef __GLIBC__ 1516extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1517TEST(MemorySanitizer, __strtod_l) { 1518 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); 1519 char *e; 1520 assert(0 != __strtod_l("1.5", &e, loc)); 1521 EXPECT_NOT_POISONED((S8) e); 1522 freelocale(loc); 1523} 1524#endif // __GLIBC__ 1525 1526TEST(MemorySanitizer, strtof) { 1527 char *e; 1528 assert(0 != strtof("1.5", &e)); 1529 EXPECT_NOT_POISONED((S8) e); 1530} 1531 1532TEST(MemorySanitizer, strtold) { 1533 char *e; 1534 assert(0 != strtold("1.5", &e)); 1535 EXPECT_NOT_POISONED((S8) e); 1536} 1537 1538TEST(MemorySanitizer, modf) { 1539 double x, y; 1540 x = modf(2.1, &y); 1541 EXPECT_NOT_POISONED(y); 1542} 1543 1544TEST(MemorySanitizer, modff) { 1545 float x, y; 1546 x = modff(2.1, &y); 1547 EXPECT_NOT_POISONED(y); 1548} 1549 1550TEST(MemorySanitizer, modfl) { 1551 long double x, y; 1552 x = modfl(2.1, &y); 1553 EXPECT_NOT_POISONED(y); 1554} 1555 1556TEST(MemorySanitizer, sincos) { 1557 double s, c; 1558 sincos(0.2, &s, &c); 1559 EXPECT_NOT_POISONED(s); 1560 EXPECT_NOT_POISONED(c); 1561} 1562 1563TEST(MemorySanitizer, sincosf) { 1564 float s, c; 1565 sincosf(0.2, &s, &c); 1566 EXPECT_NOT_POISONED(s); 1567 EXPECT_NOT_POISONED(c); 1568} 1569 1570TEST(MemorySanitizer, sincosl) { 1571 long double s, c; 1572 sincosl(0.2, &s, &c); 1573 EXPECT_NOT_POISONED(s); 1574 EXPECT_NOT_POISONED(c); 1575} 1576 1577TEST(MemorySanitizer, remquo) { 1578 int quo; 1579 double res = remquo(29.0, 3.0, &quo); 1580 ASSERT_NE(0.0, res); 1581 EXPECT_NOT_POISONED(quo); 1582} 1583 1584TEST(MemorySanitizer, remquof) { 1585 int quo; 1586 float res = remquof(29.0, 3.0, &quo); 1587 ASSERT_NE(0.0, res); 1588 EXPECT_NOT_POISONED(quo); 1589} 1590 1591TEST(MemorySanitizer, remquol) { 1592 int quo; 1593 long double res = remquof(29.0, 3.0, &quo); 1594 ASSERT_NE(0.0, res); 1595 EXPECT_NOT_POISONED(quo); 1596} 1597 1598TEST(MemorySanitizer, lgamma) { 1599 double res = lgamma(1.1); 1600 ASSERT_NE(0.0, res); 1601 EXPECT_NOT_POISONED(signgam); 1602} 1603 1604TEST(MemorySanitizer, lgammaf) { 1605 float res = lgammaf(1.1); 1606 ASSERT_NE(0.0, res); 1607 EXPECT_NOT_POISONED(signgam); 1608} 1609 1610TEST(MemorySanitizer, lgammal) { 1611 long double res = lgammal(1.1); 1612 ASSERT_NE(0.0, res); 1613 EXPECT_NOT_POISONED(signgam); 1614} 1615 1616TEST(MemorySanitizer, lgamma_r) { 1617 int sgn; 1618 double res = lgamma_r(1.1, &sgn); 1619 ASSERT_NE(0.0, res); 1620 EXPECT_NOT_POISONED(sgn); 1621} 1622 1623TEST(MemorySanitizer, lgammaf_r) { 1624 int sgn; 1625 float res = lgammaf_r(1.1, &sgn); 1626 ASSERT_NE(0.0, res); 1627 EXPECT_NOT_POISONED(sgn); 1628} 1629 1630TEST(MemorySanitizer, lgammal_r) { 1631 int sgn; 1632 long double res = lgammal_r(1.1, &sgn); 1633 ASSERT_NE(0.0, res); 1634 EXPECT_NOT_POISONED(sgn); 1635} 1636 1637TEST(MemorySanitizer, drand48_r) { 1638 struct drand48_data buf; 1639 srand48_r(0, &buf); 1640 double d; 1641 drand48_r(&buf, &d); 1642 EXPECT_NOT_POISONED(d); 1643} 1644 1645TEST(MemorySanitizer, lrand48_r) { 1646 struct drand48_data buf; 1647 srand48_r(0, &buf); 1648 long d; 1649 lrand48_r(&buf, &d); 1650 EXPECT_NOT_POISONED(d); 1651} 1652 1653TEST(MemorySanitizer, sprintf) { // NOLINT 1654 char buff[10]; 1655 break_optimization(buff); 1656 EXPECT_POISONED(buff[0]); 1657 int res = sprintf(buff, "%d", 1234567); // NOLINT 1658 assert(res == 7); 1659 assert(buff[0] == '1'); 1660 assert(buff[1] == '2'); 1661 assert(buff[2] == '3'); 1662 assert(buff[6] == '7'); 1663 assert(buff[7] == 0); 1664 EXPECT_POISONED(buff[8]); 1665} 1666 1667TEST(MemorySanitizer, snprintf) { 1668 char buff[10]; 1669 break_optimization(buff); 1670 EXPECT_POISONED(buff[0]); 1671 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1672 assert(res == 7); 1673 assert(buff[0] == '1'); 1674 assert(buff[1] == '2'); 1675 assert(buff[2] == '3'); 1676 assert(buff[6] == '7'); 1677 assert(buff[7] == 0); 1678 EXPECT_POISONED(buff[8]); 1679} 1680 1681TEST(MemorySanitizer, swprintf) { 1682 wchar_t buff[10]; 1683 assert(sizeof(wchar_t) == 4); 1684 break_optimization(buff); 1685 EXPECT_POISONED(buff[0]); 1686 int res = swprintf(buff, 9, L"%d", 1234567); 1687 assert(res == 7); 1688 assert(buff[0] == '1'); 1689 assert(buff[1] == '2'); 1690 assert(buff[2] == '3'); 1691 assert(buff[6] == '7'); 1692 assert(buff[7] == 0); 1693 EXPECT_POISONED(buff[8]); 1694} 1695 1696TEST(MemorySanitizer, asprintf) { // NOLINT 1697 char *pbuf; 1698 EXPECT_POISONED(pbuf); 1699 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1700 assert(res == 7); 1701 EXPECT_NOT_POISONED(pbuf); 1702 assert(pbuf[0] == '1'); 1703 assert(pbuf[1] == '2'); 1704 assert(pbuf[2] == '3'); 1705 assert(pbuf[6] == '7'); 1706 assert(pbuf[7] == 0); 1707 free(pbuf); 1708} 1709 1710TEST(MemorySanitizer, mbstowcs) { 1711 const char *x = "abc"; 1712 wchar_t buff[10]; 1713 int res = mbstowcs(buff, x, 2); 1714 EXPECT_EQ(2, res); 1715 EXPECT_EQ(L'a', buff[0]); 1716 EXPECT_EQ(L'b', buff[1]); 1717 EXPECT_POISONED(buff[2]); 1718 res = mbstowcs(buff, x, 10); 1719 EXPECT_EQ(3, res); 1720 EXPECT_NOT_POISONED(buff[3]); 1721} 1722 1723TEST(MemorySanitizer, wcstombs) { 1724 const wchar_t *x = L"abc"; 1725 char buff[10]; 1726 int res = wcstombs(buff, x, 4); 1727 EXPECT_EQ(res, 3); 1728 EXPECT_EQ(buff[0], 'a'); 1729 EXPECT_EQ(buff[1], 'b'); 1730 EXPECT_EQ(buff[2], 'c'); 1731} 1732 1733TEST(MemorySanitizer, wcsrtombs) { 1734 const wchar_t *x = L"abc"; 1735 const wchar_t *p = x; 1736 char buff[10]; 1737 mbstate_t mbs; 1738 memset(&mbs, 0, sizeof(mbs)); 1739 int res = wcsrtombs(buff, &p, 4, &mbs); 1740 EXPECT_EQ(res, 3); 1741 EXPECT_EQ(buff[0], 'a'); 1742 EXPECT_EQ(buff[1], 'b'); 1743 EXPECT_EQ(buff[2], 'c'); 1744 EXPECT_EQ(buff[3], '\0'); 1745 EXPECT_POISONED(buff[4]); 1746} 1747 1748TEST(MemorySanitizer, wcsnrtombs) { 1749 const wchar_t *x = L"abc"; 1750 const wchar_t *p = x; 1751 char buff[10]; 1752 mbstate_t mbs; 1753 memset(&mbs, 0, sizeof(mbs)); 1754 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1755 EXPECT_EQ(res, 2); 1756 EXPECT_EQ(buff[0], 'a'); 1757 EXPECT_EQ(buff[1], 'b'); 1758 EXPECT_POISONED(buff[2]); 1759} 1760 1761TEST(MemorySanitizer, mbtowc) { 1762 const char *x = "abc"; 1763 wchar_t wx; 1764 int res = mbtowc(&wx, x, 3); 1765 EXPECT_GT(res, 0); 1766 EXPECT_NOT_POISONED(wx); 1767} 1768 1769TEST(MemorySanitizer, mbrtowc) { 1770 const char *x = "abc"; 1771 wchar_t wx; 1772 mbstate_t mbs; 1773 memset(&mbs, 0, sizeof(mbs)); 1774 int res = mbrtowc(&wx, x, 3, &mbs); 1775 EXPECT_GT(res, 0); 1776 EXPECT_NOT_POISONED(wx); 1777} 1778 1779TEST(MemorySanitizer, gettimeofday) { 1780 struct timeval tv; 1781 struct timezone tz; 1782 break_optimization(&tv); 1783 break_optimization(&tz); 1784 assert(sizeof(tv) == 16); 1785 assert(sizeof(tz) == 8); 1786 EXPECT_POISONED(tv.tv_sec); 1787 EXPECT_POISONED(tv.tv_usec); 1788 EXPECT_POISONED(tz.tz_minuteswest); 1789 EXPECT_POISONED(tz.tz_dsttime); 1790 assert(0 == gettimeofday(&tv, &tz)); 1791 EXPECT_NOT_POISONED(tv.tv_sec); 1792 EXPECT_NOT_POISONED(tv.tv_usec); 1793 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1794 EXPECT_NOT_POISONED(tz.tz_dsttime); 1795} 1796 1797TEST(MemorySanitizer, clock_gettime) { 1798 struct timespec tp; 1799 EXPECT_POISONED(tp.tv_sec); 1800 EXPECT_POISONED(tp.tv_nsec); 1801 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1802 EXPECT_NOT_POISONED(tp.tv_sec); 1803 EXPECT_NOT_POISONED(tp.tv_nsec); 1804} 1805 1806TEST(MemorySanitizer, clock_getres) { 1807 struct timespec tp; 1808 EXPECT_POISONED(tp.tv_sec); 1809 EXPECT_POISONED(tp.tv_nsec); 1810 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1811 EXPECT_POISONED(tp.tv_sec); 1812 EXPECT_POISONED(tp.tv_nsec); 1813 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1814 EXPECT_NOT_POISONED(tp.tv_sec); 1815 EXPECT_NOT_POISONED(tp.tv_nsec); 1816} 1817 1818TEST(MemorySanitizer, getitimer) { 1819 struct itimerval it1, it2; 1820 int res; 1821 EXPECT_POISONED(it1.it_interval.tv_sec); 1822 EXPECT_POISONED(it1.it_interval.tv_usec); 1823 EXPECT_POISONED(it1.it_value.tv_sec); 1824 EXPECT_POISONED(it1.it_value.tv_usec); 1825 res = getitimer(ITIMER_VIRTUAL, &it1); 1826 assert(!res); 1827 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1828 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1829 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1830 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1831 1832 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1833 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1834 1835 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1836 assert(!res); 1837 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1838 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1839 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1840 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1841 1842 // Check that old_value can be 0, and disable the timer. 1843 memset(&it1, 0, sizeof(it1)); 1844 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1845 assert(!res); 1846} 1847 1848TEST(MemorySanitizer, setitimer_null) { 1849 setitimer(ITIMER_VIRTUAL, 0, 0); 1850 // Not testing the return value, since it the behaviour seems to differ 1851 // between libc implementations and POSIX. 1852 // Should never crash, though. 1853} 1854 1855TEST(MemorySanitizer, time) { 1856 time_t t; 1857 EXPECT_POISONED(t); 1858 time_t t2 = time(&t); 1859 assert(t2 != (time_t)-1); 1860 EXPECT_NOT_POISONED(t); 1861} 1862 1863TEST(MemorySanitizer, strptime) { 1864 struct tm time; 1865 char *p = strptime("11/1/2013-05:39", "%m/%d/%Y-%H:%M", &time); 1866 assert(p != 0); 1867 EXPECT_NOT_POISONED(time.tm_sec); 1868 EXPECT_NOT_POISONED(time.tm_hour); 1869 EXPECT_NOT_POISONED(time.tm_year); 1870} 1871 1872TEST(MemorySanitizer, localtime) { 1873 time_t t = 123; 1874 struct tm *time = localtime(&t); 1875 assert(time != 0); 1876 EXPECT_NOT_POISONED(time->tm_sec); 1877 EXPECT_NOT_POISONED(time->tm_hour); 1878 EXPECT_NOT_POISONED(time->tm_year); 1879 EXPECT_NOT_POISONED(time->tm_isdst); 1880 EXPECT_NE(0, strlen(time->tm_zone)); 1881} 1882 1883TEST(MemorySanitizer, localtime_r) { 1884 time_t t = 123; 1885 struct tm time; 1886 struct tm *res = localtime_r(&t, &time); 1887 assert(res != 0); 1888 EXPECT_NOT_POISONED(time.tm_sec); 1889 EXPECT_NOT_POISONED(time.tm_hour); 1890 EXPECT_NOT_POISONED(time.tm_year); 1891 EXPECT_NOT_POISONED(time.tm_isdst); 1892 EXPECT_NE(0, strlen(time.tm_zone)); 1893} 1894 1895TEST(MemorySanitizer, getmntent) { 1896 FILE *fp = setmntent("/etc/fstab", "r"); 1897 struct mntent *mnt = getmntent(fp); 1898 ASSERT_NE((void *)0, mnt); 1899 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1900 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1901 ASSERT_NE(0, strlen(mnt->mnt_type)); 1902 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1903 EXPECT_NOT_POISONED(mnt->mnt_freq); 1904 EXPECT_NOT_POISONED(mnt->mnt_passno); 1905 fclose(fp); 1906} 1907 1908TEST(MemorySanitizer, getmntent_r) { 1909 FILE *fp = setmntent("/etc/fstab", "r"); 1910 struct mntent mntbuf; 1911 char buf[1000]; 1912 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 1913 ASSERT_NE((void *)0, mnt); 1914 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1915 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1916 ASSERT_NE(0, strlen(mnt->mnt_type)); 1917 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1918 EXPECT_NOT_POISONED(mnt->mnt_freq); 1919 EXPECT_NOT_POISONED(mnt->mnt_passno); 1920 fclose(fp); 1921} 1922 1923TEST(MemorySanitizer, ether) { 1924 const char *asc = "11:22:33:44:55:66"; 1925 struct ether_addr *paddr = ether_aton(asc); 1926 EXPECT_NOT_POISONED(*paddr); 1927 1928 struct ether_addr addr; 1929 paddr = ether_aton_r(asc, &addr); 1930 ASSERT_EQ(paddr, &addr); 1931 EXPECT_NOT_POISONED(addr); 1932 1933 char *s = ether_ntoa(&addr); 1934 ASSERT_NE(0, strlen(s)); 1935 1936 char buf[100]; 1937 s = ether_ntoa_r(&addr, buf); 1938 ASSERT_EQ(s, buf); 1939 ASSERT_NE(0, strlen(buf)); 1940} 1941 1942TEST(MemorySanitizer, mmap) { 1943 const int size = 4096; 1944 void *p1, *p2; 1945 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1946 __msan_poison(p1, size); 1947 munmap(p1, size); 1948 for (int i = 0; i < 1000; i++) { 1949 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1950 if (p2 == p1) 1951 break; 1952 else 1953 munmap(p2, size); 1954 } 1955 if (p1 == p2) { 1956 EXPECT_NOT_POISONED(*(char*)p2); 1957 munmap(p2, size); 1958 } 1959} 1960 1961// FIXME: enable and add ecvt. 1962// FIXME: check why msandr does nt handle fcvt. 1963TEST(MemorySanitizer, fcvt) { 1964 int a, b; 1965 break_optimization(&a); 1966 break_optimization(&b); 1967 EXPECT_POISONED(a); 1968 EXPECT_POISONED(b); 1969 char *str = fcvt(12345.6789, 10, &a, &b); 1970 EXPECT_NOT_POISONED(a); 1971 EXPECT_NOT_POISONED(b); 1972} 1973 1974TEST(MemorySanitizer, frexp) { 1975 int x; 1976 x = *GetPoisoned<int>(); 1977 double r = frexp(1.1, &x); 1978 EXPECT_NOT_POISONED(r); 1979 EXPECT_NOT_POISONED(x); 1980 1981 x = *GetPoisoned<int>(); 1982 float rf = frexpf(1.1, &x); 1983 EXPECT_NOT_POISONED(rf); 1984 EXPECT_NOT_POISONED(x); 1985 1986 x = *GetPoisoned<int>(); 1987 double rl = frexpl(1.1, &x); 1988 EXPECT_NOT_POISONED(rl); 1989 EXPECT_NOT_POISONED(x); 1990} 1991 1992namespace { 1993 1994static int cnt; 1995 1996void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1997 assert(signo == SIGPROF); 1998 assert(si); 1999 EXPECT_NOT_POISONED(si->si_errno); 2000 EXPECT_NOT_POISONED(si->si_pid); 2001#if __linux__ 2002# if defined(__x86_64__) 2003 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 2004# elif defined(__i386__) 2005 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 2006# endif 2007#endif 2008 ++cnt; 2009} 2010 2011TEST(MemorySanitizer, sigaction) { 2012 struct sigaction act = {}; 2013 struct sigaction oldact = {}; 2014 struct sigaction origact = {}; 2015 2016 sigaction(SIGPROF, 0, &origact); 2017 2018 act.sa_flags |= SA_SIGINFO; 2019 act.sa_sigaction = &SigactionHandler; 2020 sigaction(SIGPROF, &act, 0); 2021 2022 kill(getpid(), SIGPROF); 2023 2024 act.sa_flags &= ~SA_SIGINFO; 2025 act.sa_handler = SIG_DFL; 2026 sigaction(SIGPROF, &act, 0); 2027 2028 act.sa_flags &= ~SA_SIGINFO; 2029 act.sa_handler = SIG_IGN; 2030 sigaction(SIGPROF, &act, &oldact); 2031 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 2032 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 2033 kill(getpid(), SIGPROF); 2034 2035 act.sa_flags |= SA_SIGINFO; 2036 act.sa_sigaction = &SigactionHandler; 2037 sigaction(SIGPROF, &act, &oldact); 2038 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 2039 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 2040 kill(getpid(), SIGPROF); 2041 2042 act.sa_flags &= ~SA_SIGINFO; 2043 act.sa_handler = SIG_DFL; 2044 sigaction(SIGPROF, &act, &oldact); 2045 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 2046 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 2047 EXPECT_EQ(2, cnt); 2048 2049 sigaction(SIGPROF, &origact, 0); 2050} 2051 2052} // namespace 2053 2054 2055TEST(MemorySanitizer, sigemptyset) { 2056 sigset_t s; 2057 EXPECT_POISONED(s); 2058 int res = sigemptyset(&s); 2059 ASSERT_EQ(0, res); 2060 EXPECT_NOT_POISONED(s); 2061} 2062 2063TEST(MemorySanitizer, sigfillset) { 2064 sigset_t s; 2065 EXPECT_POISONED(s); 2066 int res = sigfillset(&s); 2067 ASSERT_EQ(0, res); 2068 EXPECT_NOT_POISONED(s); 2069} 2070 2071TEST(MemorySanitizer, sigpending) { 2072 sigset_t s; 2073 EXPECT_POISONED(s); 2074 int res = sigpending(&s); 2075 ASSERT_EQ(0, res); 2076 EXPECT_NOT_POISONED(s); 2077} 2078 2079TEST(MemorySanitizer, sigprocmask) { 2080 sigset_t s; 2081 EXPECT_POISONED(s); 2082 int res = sigprocmask(SIG_BLOCK, 0, &s); 2083 ASSERT_EQ(0, res); 2084 EXPECT_NOT_POISONED(s); 2085} 2086 2087struct StructWithDtor { 2088 ~StructWithDtor(); 2089}; 2090 2091NOINLINE StructWithDtor::~StructWithDtor() { 2092 break_optimization(0); 2093} 2094 2095TEST(MemorySanitizer, Invoke) { 2096 StructWithDtor s; // Will cause the calls to become invokes. 2097 EXPECT_NOT_POISONED(0); 2098 EXPECT_POISONED(*GetPoisoned<int>()); 2099 EXPECT_NOT_POISONED(0); 2100 EXPECT_POISONED(*GetPoisoned<int>()); 2101 EXPECT_POISONED(ReturnPoisoned<S4>()); 2102} 2103 2104TEST(MemorySanitizer, ptrtoint) { 2105 // Test that shadow is propagated through pointer-to-integer conversion. 2106 void* p = (void*)0xABCD; 2107 __msan_poison(((char*)&p) + 1, sizeof(p)); 2108 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 2109 2110 void* q = (void*)0xABCD; 2111 __msan_poison(&q, sizeof(q) - 1); 2112 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 2113} 2114 2115static void vaargsfn2(int guard, ...) { 2116 va_list vl; 2117 va_start(vl, guard); 2118 EXPECT_NOT_POISONED(va_arg(vl, int)); 2119 EXPECT_NOT_POISONED(va_arg(vl, int)); 2120 EXPECT_NOT_POISONED(va_arg(vl, int)); 2121 EXPECT_POISONED(va_arg(vl, double)); 2122 va_end(vl); 2123} 2124 2125static void vaargsfn(int guard, ...) { 2126 va_list vl; 2127 va_start(vl, guard); 2128 EXPECT_NOT_POISONED(va_arg(vl, int)); 2129 EXPECT_POISONED(va_arg(vl, int)); 2130 // The following call will overwrite __msan_param_tls. 2131 // Checks after it test that arg shadow was somehow saved across the call. 2132 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 2133 EXPECT_NOT_POISONED(va_arg(vl, int)); 2134 EXPECT_POISONED(va_arg(vl, int)); 2135 va_end(vl); 2136} 2137 2138TEST(MemorySanitizer, VAArgTest) { 2139 int* x = GetPoisoned<int>(); 2140 int* y = GetPoisoned<int>(4); 2141 vaargsfn(1, 13, *x, 42, *y); 2142} 2143 2144static void vaargsfn_many(int guard, ...) { 2145 va_list vl; 2146 va_start(vl, guard); 2147 EXPECT_NOT_POISONED(va_arg(vl, int)); 2148 EXPECT_POISONED(va_arg(vl, int)); 2149 EXPECT_NOT_POISONED(va_arg(vl, int)); 2150 EXPECT_NOT_POISONED(va_arg(vl, int)); 2151 EXPECT_NOT_POISONED(va_arg(vl, int)); 2152 EXPECT_NOT_POISONED(va_arg(vl, int)); 2153 EXPECT_NOT_POISONED(va_arg(vl, int)); 2154 EXPECT_NOT_POISONED(va_arg(vl, int)); 2155 EXPECT_NOT_POISONED(va_arg(vl, int)); 2156 EXPECT_POISONED(va_arg(vl, int)); 2157 va_end(vl); 2158} 2159 2160TEST(MemorySanitizer, VAArgManyTest) { 2161 int* x = GetPoisoned<int>(); 2162 int* y = GetPoisoned<int>(4); 2163 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 2164} 2165 2166static void vaargsfn_pass2(va_list vl) { 2167 EXPECT_NOT_POISONED(va_arg(vl, int)); 2168 EXPECT_NOT_POISONED(va_arg(vl, int)); 2169 EXPECT_POISONED(va_arg(vl, int)); 2170} 2171 2172static void vaargsfn_pass(int guard, ...) { 2173 va_list vl; 2174 va_start(vl, guard); 2175 EXPECT_POISONED(va_arg(vl, int)); 2176 vaargsfn_pass2(vl); 2177 va_end(vl); 2178} 2179 2180TEST(MemorySanitizer, VAArgPass) { 2181 int* x = GetPoisoned<int>(); 2182 int* y = GetPoisoned<int>(4); 2183 vaargsfn_pass(1, *x, 2, 3, *y); 2184} 2185 2186static void vaargsfn_copy2(va_list vl) { 2187 EXPECT_NOT_POISONED(va_arg(vl, int)); 2188 EXPECT_POISONED(va_arg(vl, int)); 2189} 2190 2191static void vaargsfn_copy(int guard, ...) { 2192 va_list vl; 2193 va_start(vl, guard); 2194 EXPECT_NOT_POISONED(va_arg(vl, int)); 2195 EXPECT_POISONED(va_arg(vl, int)); 2196 va_list vl2; 2197 va_copy(vl2, vl); 2198 vaargsfn_copy2(vl2); 2199 EXPECT_NOT_POISONED(va_arg(vl, int)); 2200 EXPECT_POISONED(va_arg(vl, int)); 2201 va_end(vl); 2202} 2203 2204TEST(MemorySanitizer, VAArgCopy) { 2205 int* x = GetPoisoned<int>(); 2206 int* y = GetPoisoned<int>(4); 2207 vaargsfn_copy(1, 2, *x, 3, *y); 2208} 2209 2210static void vaargsfn_ptr(int guard, ...) { 2211 va_list vl; 2212 va_start(vl, guard); 2213 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2214 EXPECT_POISONED(va_arg(vl, int*)); 2215 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2216 EXPECT_POISONED(va_arg(vl, double*)); 2217 va_end(vl); 2218} 2219 2220TEST(MemorySanitizer, VAArgPtr) { 2221 int** x = GetPoisoned<int*>(); 2222 double** y = GetPoisoned<double*>(8); 2223 int z; 2224 vaargsfn_ptr(1, &z, *x, &z, *y); 2225} 2226 2227static void vaargsfn_overflow(int guard, ...) { 2228 va_list vl; 2229 va_start(vl, guard); 2230 EXPECT_NOT_POISONED(va_arg(vl, int)); 2231 EXPECT_NOT_POISONED(va_arg(vl, int)); 2232 EXPECT_POISONED(va_arg(vl, int)); 2233 EXPECT_NOT_POISONED(va_arg(vl, int)); 2234 EXPECT_NOT_POISONED(va_arg(vl, int)); 2235 EXPECT_NOT_POISONED(va_arg(vl, int)); 2236 2237 EXPECT_NOT_POISONED(va_arg(vl, double)); 2238 EXPECT_NOT_POISONED(va_arg(vl, double)); 2239 EXPECT_NOT_POISONED(va_arg(vl, double)); 2240 EXPECT_POISONED(va_arg(vl, double)); 2241 EXPECT_NOT_POISONED(va_arg(vl, double)); 2242 EXPECT_POISONED(va_arg(vl, int*)); 2243 EXPECT_NOT_POISONED(va_arg(vl, double)); 2244 EXPECT_NOT_POISONED(va_arg(vl, double)); 2245 2246 EXPECT_POISONED(va_arg(vl, int)); 2247 EXPECT_POISONED(va_arg(vl, double)); 2248 EXPECT_POISONED(va_arg(vl, int*)); 2249 2250 EXPECT_NOT_POISONED(va_arg(vl, int)); 2251 EXPECT_NOT_POISONED(va_arg(vl, double)); 2252 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2253 2254 EXPECT_POISONED(va_arg(vl, int)); 2255 EXPECT_POISONED(va_arg(vl, double)); 2256 EXPECT_POISONED(va_arg(vl, int*)); 2257 2258 va_end(vl); 2259} 2260 2261TEST(MemorySanitizer, VAArgOverflow) { 2262 int* x = GetPoisoned<int>(); 2263 double* y = GetPoisoned<double>(8); 2264 int** p = GetPoisoned<int*>(16); 2265 int z; 2266 vaargsfn_overflow(1, 2267 1, 2, *x, 4, 5, 6, 2268 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2269 // the following args will overflow for sure 2270 *x, *y, *p, 2271 7, 9.9, &z, 2272 *x, *y, *p); 2273} 2274 2275static void vaargsfn_tlsoverwrite2(int guard, ...) { 2276 va_list vl; 2277 va_start(vl, guard); 2278 for (int i = 0; i < 20; ++i) 2279 EXPECT_NOT_POISONED(va_arg(vl, int)); 2280 va_end(vl); 2281} 2282 2283static void vaargsfn_tlsoverwrite(int guard, ...) { 2284 // This call will overwrite TLS contents unless it's backed up somewhere. 2285 vaargsfn_tlsoverwrite2(2, 2286 42, 42, 42, 42, 42, 2287 42, 42, 42, 42, 42, 2288 42, 42, 42, 42, 42, 2289 42, 42, 42, 42, 42); // 20x 2290 va_list vl; 2291 va_start(vl, guard); 2292 for (int i = 0; i < 20; ++i) 2293 EXPECT_POISONED(va_arg(vl, int)); 2294 va_end(vl); 2295} 2296 2297TEST(MemorySanitizer, VAArgTLSOverwrite) { 2298 int* x = GetPoisoned<int>(); 2299 vaargsfn_tlsoverwrite(1, 2300 *x, *x, *x, *x, *x, 2301 *x, *x, *x, *x, *x, 2302 *x, *x, *x, *x, *x, 2303 *x, *x, *x, *x, *x); // 20x 2304 2305} 2306 2307struct StructByVal { 2308 int a, b, c, d, e, f; 2309}; 2310 2311NOINLINE void StructByValTestFunc(struct StructByVal s) { 2312 EXPECT_NOT_POISONED(s.a); 2313 EXPECT_POISONED(s.b); 2314 EXPECT_NOT_POISONED(s.c); 2315 EXPECT_POISONED(s.d); 2316 EXPECT_NOT_POISONED(s.e); 2317 EXPECT_POISONED(s.f); 2318} 2319 2320NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2321 StructByValTestFunc(s); 2322} 2323 2324NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2325 StructByValTestFunc(s); 2326} 2327 2328TEST(MemorySanitizer, StructByVal) { 2329 // Large aggregates are passed as "byval" pointer argument in LLVM. 2330 struct StructByVal s; 2331 s.a = 1; 2332 s.b = *GetPoisoned<int>(); 2333 s.c = 2; 2334 s.d = *GetPoisoned<int>(); 2335 s.e = 3; 2336 s.f = *GetPoisoned<int>(); 2337 StructByValTestFunc(s); 2338 StructByValTestFunc1(s); 2339 StructByValTestFunc2(0, s); 2340} 2341 2342 2343#if MSAN_HAS_M128 2344NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2345NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2346TEST(MemorySanitizer, m128) { 2347 __m128i a = _mm_set1_epi16(0x1234); 2348 __m128i b = _mm_set1_epi16(0x7890); 2349 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2350 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2351} 2352// FIXME: add more tests for __m128i. 2353#endif // MSAN_HAS_M128 2354 2355// We should not complain when copying this poisoned hole. 2356struct StructWithHole { 2357 U4 a; 2358 // 4-byte hole. 2359 U8 b; 2360}; 2361 2362NOINLINE StructWithHole ReturnStructWithHole() { 2363 StructWithHole res; 2364 __msan_poison(&res, sizeof(res)); 2365 res.a = 1; 2366 res.b = 2; 2367 return res; 2368} 2369 2370TEST(MemorySanitizer, StructWithHole) { 2371 StructWithHole a = ReturnStructWithHole(); 2372 break_optimization(&a); 2373} 2374 2375template <class T> 2376NOINLINE T ReturnStruct() { 2377 T res; 2378 __msan_poison(&res, sizeof(res)); 2379 res.a = 1; 2380 return res; 2381} 2382 2383template <class T> 2384NOINLINE void TestReturnStruct() { 2385 T s1 = ReturnStruct<T>(); 2386 EXPECT_NOT_POISONED(s1.a); 2387 EXPECT_POISONED(s1.b); 2388} 2389 2390struct SSS1 { 2391 int a, b, c; 2392}; 2393struct SSS2 { 2394 int b, a, c; 2395}; 2396struct SSS3 { 2397 int b, c, a; 2398}; 2399struct SSS4 { 2400 int c, b, a; 2401}; 2402 2403struct SSS5 { 2404 int a; 2405 float b; 2406}; 2407struct SSS6 { 2408 int a; 2409 double b; 2410}; 2411struct SSS7 { 2412 S8 b; 2413 int a; 2414}; 2415struct SSS8 { 2416 S2 b; 2417 S8 a; 2418}; 2419 2420TEST(MemorySanitizer, IntStruct3) { 2421 TestReturnStruct<SSS1>(); 2422 TestReturnStruct<SSS2>(); 2423 TestReturnStruct<SSS3>(); 2424 TestReturnStruct<SSS4>(); 2425 TestReturnStruct<SSS5>(); 2426 TestReturnStruct<SSS6>(); 2427 TestReturnStruct<SSS7>(); 2428 TestReturnStruct<SSS8>(); 2429} 2430 2431struct LongStruct { 2432 U1 a1, b1; 2433 U2 a2, b2; 2434 U4 a4, b4; 2435 U8 a8, b8; 2436}; 2437 2438NOINLINE LongStruct ReturnLongStruct1() { 2439 LongStruct res; 2440 __msan_poison(&res, sizeof(res)); 2441 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2442 // leaves b1, .., b8 poisoned. 2443 return res; 2444} 2445 2446NOINLINE LongStruct ReturnLongStruct2() { 2447 LongStruct res; 2448 __msan_poison(&res, sizeof(res)); 2449 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2450 // leaves a1, .., a8 poisoned. 2451 return res; 2452} 2453 2454TEST(MemorySanitizer, LongStruct) { 2455 LongStruct s1 = ReturnLongStruct1(); 2456 __msan_print_shadow(&s1, sizeof(s1)); 2457 EXPECT_NOT_POISONED(s1.a1); 2458 EXPECT_NOT_POISONED(s1.a2); 2459 EXPECT_NOT_POISONED(s1.a4); 2460 EXPECT_NOT_POISONED(s1.a8); 2461 2462 EXPECT_POISONED(s1.b1); 2463 EXPECT_POISONED(s1.b2); 2464 EXPECT_POISONED(s1.b4); 2465 EXPECT_POISONED(s1.b8); 2466 2467 LongStruct s2 = ReturnLongStruct2(); 2468 __msan_print_shadow(&s2, sizeof(s2)); 2469 EXPECT_NOT_POISONED(s2.b1); 2470 EXPECT_NOT_POISONED(s2.b2); 2471 EXPECT_NOT_POISONED(s2.b4); 2472 EXPECT_NOT_POISONED(s2.b8); 2473 2474 EXPECT_POISONED(s2.a1); 2475 EXPECT_POISONED(s2.a2); 2476 EXPECT_POISONED(s2.a4); 2477 EXPECT_POISONED(s2.a8); 2478} 2479 2480TEST(MemorySanitizer, getrlimit) { 2481 struct rlimit limit; 2482 __msan_poison(&limit, sizeof(limit)); 2483 int result = getrlimit(RLIMIT_DATA, &limit); 2484 assert(result == 0); 2485 EXPECT_NOT_POISONED(limit.rlim_cur); 2486 EXPECT_NOT_POISONED(limit.rlim_max); 2487} 2488 2489TEST(MemorySanitizer, getrusage) { 2490 struct rusage usage; 2491 __msan_poison(&usage, sizeof(usage)); 2492 int result = getrusage(RUSAGE_SELF, &usage); 2493 assert(result == 0); 2494 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2495 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2496 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2497 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2498 EXPECT_NOT_POISONED(usage.ru_maxrss); 2499 EXPECT_NOT_POISONED(usage.ru_minflt); 2500 EXPECT_NOT_POISONED(usage.ru_majflt); 2501 EXPECT_NOT_POISONED(usage.ru_inblock); 2502 EXPECT_NOT_POISONED(usage.ru_oublock); 2503 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2504 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2505} 2506 2507#ifdef __GLIBC__ 2508extern char *program_invocation_name; 2509#else // __GLIBC__ 2510# error "TODO: port this" 2511#endif 2512 2513static void dladdr_testfn() {} 2514 2515TEST(MemorySanitizer, dladdr) { 2516 Dl_info info; 2517 __msan_poison(&info, sizeof(info)); 2518 int result = dladdr((const void*)dladdr_testfn, &info); 2519 assert(result != 0); 2520 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2521 if (info.dli_fname) 2522 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2523 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2524 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2525 if (info.dli_sname) 2526 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2527 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2528} 2529 2530#ifndef MSAN_TEST_DISABLE_DLOPEN 2531 2532static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2533 (*(int *)data)++; 2534 EXPECT_NOT_POISONED(info->dlpi_addr); 2535 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2536 EXPECT_NOT_POISONED(info->dlpi_phnum); 2537 for (int i = 0; i < info->dlpi_phnum; ++i) 2538 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2539 return 0; 2540} 2541 2542// Compute the path to our loadable DSO. We assume it's in the same 2543// directory. Only use string routines that we intercept so far to do this. 2544static int PathToLoadable(char *buf, size_t sz) { 2545 const char *basename = "libmsan_loadable.x86_64.so"; 2546 char *argv0 = program_invocation_name; 2547 char *last_slash = strrchr(argv0, '/'); 2548 assert(last_slash); 2549 int res = 2550 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2551 return res < sz ? 0 : res; 2552} 2553 2554TEST(MemorySanitizer, dl_iterate_phdr) { 2555 char path[4096]; 2556 int res = PathToLoadable(path, sizeof(path)); 2557 assert(!res); 2558 2559 // Having at least one dlopen'ed library in the process makes this more 2560 // entertaining. 2561 void *lib = dlopen(path, RTLD_LAZY); 2562 ASSERT_NE((void*)0, lib); 2563 2564 int count = 0; 2565 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2566 assert(count > 0); 2567 2568 dlclose(lib); 2569} 2570 2571 2572TEST(MemorySanitizer, dlopen) { 2573 char path[4096]; 2574 int res = PathToLoadable(path, sizeof(path)); 2575 assert(!res); 2576 2577 // We need to clear shadow for globals when doing dlopen. In order to test 2578 // this, we have to poison the shadow for the DSO before we load it. In 2579 // general this is difficult, but the loader tends to reload things in the 2580 // same place, so we open, close, and then reopen. The global should always 2581 // start out clean after dlopen. 2582 for (int i = 0; i < 2; i++) { 2583 void *lib = dlopen(path, RTLD_LAZY); 2584 if (lib == NULL) { 2585 printf("dlerror: %s\n", dlerror()); 2586 assert(lib != NULL); 2587 } 2588 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2589 assert(get_dso_global); 2590 void **dso_global = get_dso_global(); 2591 EXPECT_NOT_POISONED(*dso_global); 2592 __msan_poison(dso_global, sizeof(*dso_global)); 2593 EXPECT_POISONED(*dso_global); 2594 dlclose(lib); 2595 } 2596} 2597 2598// Regression test for a crash in dlopen() interceptor. 2599TEST(MemorySanitizer, dlopenFailed) { 2600 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2601 void *lib = dlopen(path, RTLD_LAZY); 2602 ASSERT_EQ(0, lib); 2603} 2604 2605#endif // MSAN_TEST_DISABLE_DLOPEN 2606 2607TEST(MemorySanitizer, sched_getaffinity) { 2608 cpu_set_t mask; 2609 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2610 ASSERT_EQ(0, res); 2611 EXPECT_NOT_POISONED(mask); 2612} 2613 2614TEST(MemorySanitizer, scanf) { 2615 const char *input = "42 hello"; 2616 int* d = new int; 2617 char* s = new char[7]; 2618 int res = sscanf(input, "%d %5s", d, s); 2619 printf("res %d\n", res); 2620 assert(res == 2); 2621 EXPECT_NOT_POISONED(*d); 2622 EXPECT_NOT_POISONED(s[0]); 2623 EXPECT_NOT_POISONED(s[1]); 2624 EXPECT_NOT_POISONED(s[2]); 2625 EXPECT_NOT_POISONED(s[3]); 2626 EXPECT_NOT_POISONED(s[4]); 2627 EXPECT_NOT_POISONED(s[5]); 2628 EXPECT_POISONED(s[6]); 2629 delete s; 2630 delete d; 2631} 2632 2633static void *SimpleThread_threadfn(void* data) { 2634 return new int; 2635} 2636 2637TEST(MemorySanitizer, SimpleThread) { 2638 pthread_t t; 2639 void *p; 2640 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2641 assert(!res); 2642 EXPECT_NOT_POISONED(t); 2643 res = pthread_join(t, &p); 2644 assert(!res); 2645 EXPECT_NOT_POISONED(p); 2646 delete (int*)p; 2647} 2648 2649static void *SmallStackThread_threadfn(void* data) { 2650 return 0; 2651} 2652 2653TEST(MemorySanitizer, SmallStackThread) { 2654 pthread_attr_t attr; 2655 pthread_t t; 2656 void *p; 2657 int res; 2658 res = pthread_attr_init(&attr); 2659 ASSERT_EQ(0, res); 2660 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2661 ASSERT_EQ(0, res); 2662 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2663 ASSERT_EQ(0, res); 2664 res = pthread_join(t, &p); 2665 ASSERT_EQ(0, res); 2666 res = pthread_attr_destroy(&attr); 2667 ASSERT_EQ(0, res); 2668} 2669 2670TEST(MemorySanitizer, PreAllocatedStackThread) { 2671 pthread_attr_t attr; 2672 pthread_t t; 2673 int res; 2674 res = pthread_attr_init(&attr); 2675 ASSERT_EQ(0, res); 2676 void *stack; 2677 const size_t kStackSize = 64 * 1024; 2678 res = posix_memalign(&stack, 4096, kStackSize); 2679 ASSERT_EQ(0, res); 2680 res = pthread_attr_setstack(&attr, stack, kStackSize); 2681 ASSERT_EQ(0, res); 2682 // A small self-allocated stack can not be extended by the tool. 2683 // In this case pthread_create is expected to fail. 2684 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2685 EXPECT_NE(0, res); 2686 res = pthread_attr_destroy(&attr); 2687 ASSERT_EQ(0, res); 2688} 2689 2690TEST(MemorySanitizer, pthread_attr_get) { 2691 pthread_attr_t attr; 2692 int res; 2693 res = pthread_attr_init(&attr); 2694 ASSERT_EQ(0, res); 2695 { 2696 int v; 2697 res = pthread_attr_getdetachstate(&attr, &v); 2698 ASSERT_EQ(0, res); 2699 EXPECT_NOT_POISONED(v); 2700 } 2701 { 2702 size_t v; 2703 res = pthread_attr_getguardsize(&attr, &v); 2704 ASSERT_EQ(0, res); 2705 EXPECT_NOT_POISONED(v); 2706 } 2707 { 2708 struct sched_param v; 2709 res = pthread_attr_getschedparam(&attr, &v); 2710 ASSERT_EQ(0, res); 2711 EXPECT_NOT_POISONED(v); 2712 } 2713 { 2714 int v; 2715 res = pthread_attr_getschedpolicy(&attr, &v); 2716 ASSERT_EQ(0, res); 2717 EXPECT_NOT_POISONED(v); 2718 } 2719 { 2720 int v; 2721 res = pthread_attr_getinheritsched(&attr, &v); 2722 ASSERT_EQ(0, res); 2723 EXPECT_NOT_POISONED(v); 2724 } 2725 { 2726 int v; 2727 res = pthread_attr_getscope(&attr, &v); 2728 ASSERT_EQ(0, res); 2729 EXPECT_NOT_POISONED(v); 2730 } 2731 { 2732 size_t v; 2733 res = pthread_attr_getstacksize(&attr, &v); 2734 ASSERT_EQ(0, res); 2735 EXPECT_NOT_POISONED(v); 2736 } 2737 { 2738 void *v; 2739 size_t w; 2740 res = pthread_attr_getstack(&attr, &v, &w); 2741 ASSERT_EQ(0, res); 2742 EXPECT_NOT_POISONED(v); 2743 EXPECT_NOT_POISONED(w); 2744 } 2745 { 2746 cpu_set_t v; 2747 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 2748 ASSERT_EQ(0, res); 2749 EXPECT_NOT_POISONED(v); 2750 } 2751 res = pthread_attr_destroy(&attr); 2752 ASSERT_EQ(0, res); 2753} 2754 2755TEST(MemorySanitizer, pthread_getschedparam) { 2756 int policy; 2757 struct sched_param param; 2758 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2759 ASSERT_EQ(0, res); 2760 EXPECT_NOT_POISONED(policy); 2761 EXPECT_NOT_POISONED(param.sched_priority); 2762} 2763 2764TEST(MemorySanitizer, pthread_key_create) { 2765 pthread_key_t key; 2766 int res = pthread_key_create(&key, NULL); 2767 assert(!res); 2768 EXPECT_NOT_POISONED(key); 2769 res = pthread_key_delete(key); 2770 assert(!res); 2771} 2772 2773namespace { 2774struct SignalCondArg { 2775 pthread_cond_t* cond; 2776 pthread_mutex_t* mu; 2777 bool broadcast; 2778}; 2779 2780void *SignalCond(void *param) { 2781 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2782 pthread_mutex_lock(arg->mu); 2783 if (arg->broadcast) 2784 pthread_cond_broadcast(arg->cond); 2785 else 2786 pthread_cond_signal(arg->cond); 2787 pthread_mutex_unlock(arg->mu); 2788 return 0; 2789} 2790} // namespace 2791 2792TEST(MemorySanitizer, pthread_cond_wait) { 2793 pthread_cond_t cond; 2794 pthread_mutex_t mu; 2795 SignalCondArg args = {&cond, &mu, false}; 2796 pthread_cond_init(&cond, 0); 2797 pthread_mutex_init(&mu, 0); 2798 pthread_mutex_lock(&mu); 2799 2800 // signal 2801 pthread_t thr; 2802 pthread_create(&thr, 0, SignalCond, &args); 2803 int res = pthread_cond_wait(&cond, &mu); 2804 assert(!res); 2805 pthread_join(thr, 0); 2806 2807 // broadcast 2808 args.broadcast = true; 2809 pthread_create(&thr, 0, SignalCond, &args); 2810 res = pthread_cond_wait(&cond, &mu); 2811 assert(!res); 2812 pthread_join(thr, 0); 2813 2814 pthread_mutex_unlock(&mu); 2815 pthread_mutex_destroy(&mu); 2816 pthread_cond_destroy(&cond); 2817} 2818 2819TEST(MemorySanitizer, tmpnam) { 2820 char s[L_tmpnam]; 2821 char *res = tmpnam(s); 2822 ASSERT_EQ(s, res); 2823 EXPECT_NOT_POISONED(strlen(res)); 2824} 2825 2826TEST(MemorySanitizer, tempnam) { 2827 char *res = tempnam(NULL, "zzz"); 2828 EXPECT_NOT_POISONED(strlen(res)); 2829 free(res); 2830} 2831 2832TEST(MemorySanitizer, posix_memalign) { 2833 void *p; 2834 EXPECT_POISONED(p); 2835 int res = posix_memalign(&p, 4096, 13); 2836 ASSERT_EQ(0, res); 2837 EXPECT_NOT_POISONED(p); 2838 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2839 free(p); 2840} 2841 2842TEST(MemorySanitizer, memalign) { 2843 void *p = memalign(4096, 13); 2844 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2845 free(p); 2846} 2847 2848TEST(MemorySanitizer, valloc) { 2849 void *a = valloc(100); 2850 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2851 free(a); 2852} 2853 2854TEST(MemorySanitizer, pvalloc) { 2855 void *p = pvalloc(kPageSize + 100); 2856 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2857 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2858 free(p); 2859 2860 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2861 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2862 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2863 free(p); 2864} 2865 2866TEST(MemorySanitizer, inet_pton) { 2867 const char *s = "1:0:0:0:0:0:0:8"; 2868 unsigned char buf[sizeof(struct in6_addr)]; 2869 int res = inet_pton(AF_INET6, s, buf); 2870 ASSERT_EQ(1, res); 2871 EXPECT_NOT_POISONED(buf[0]); 2872 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2873 2874 char s_out[INET6_ADDRSTRLEN]; 2875 EXPECT_POISONED(s_out[3]); 2876 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2877 ASSERT_NE((void*)0, q); 2878 EXPECT_NOT_POISONED(s_out[3]); 2879} 2880 2881TEST(MemorySanitizer, inet_aton) { 2882 const char *s = "127.0.0.1"; 2883 struct in_addr in[2]; 2884 int res = inet_aton(s, in); 2885 ASSERT_NE(0, res); 2886 EXPECT_NOT_POISONED(in[0]); 2887 EXPECT_POISONED(*(char *)(in + 1)); 2888} 2889 2890TEST(MemorySanitizer, uname) { 2891 struct utsname u; 2892 int res = uname(&u); 2893 assert(!res); 2894 EXPECT_NOT_POISONED(strlen(u.sysname)); 2895 EXPECT_NOT_POISONED(strlen(u.nodename)); 2896 EXPECT_NOT_POISONED(strlen(u.release)); 2897 EXPECT_NOT_POISONED(strlen(u.version)); 2898 EXPECT_NOT_POISONED(strlen(u.machine)); 2899} 2900 2901TEST(MemorySanitizer, gethostname) { 2902 char buf[100]; 2903 int res = gethostname(buf, 100); 2904 assert(!res); 2905 EXPECT_NOT_POISONED(strlen(buf)); 2906} 2907 2908TEST(MemorySanitizer, sysinfo) { 2909 struct sysinfo info; 2910 int res = sysinfo(&info); 2911 assert(!res); 2912 EXPECT_NOT_POISONED(info); 2913} 2914 2915TEST(MemorySanitizer, getpwuid) { 2916 struct passwd *p = getpwuid(0); // root 2917 assert(p); 2918 EXPECT_NOT_POISONED(p->pw_name); 2919 assert(p->pw_name); 2920 EXPECT_NOT_POISONED(p->pw_name[0]); 2921 EXPECT_NOT_POISONED(p->pw_uid); 2922 assert(p->pw_uid == 0); 2923} 2924 2925TEST(MemorySanitizer, getpwnam_r) { 2926 struct passwd pwd; 2927 struct passwd *pwdres; 2928 char buf[10000]; 2929 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2930 assert(!res); 2931 EXPECT_NOT_POISONED(pwd.pw_name); 2932 assert(pwd.pw_name); 2933 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2934 EXPECT_NOT_POISONED(pwd.pw_uid); 2935 assert(pwd.pw_uid == 0); 2936} 2937 2938TEST(MemorySanitizer, getpwnam_r_positive) { 2939 struct passwd pwd; 2940 struct passwd *pwdres; 2941 char s[5]; 2942 strncpy(s, "abcd", 5); 2943 __msan_poison(s, 5); 2944 char buf[10000]; 2945 int res; 2946 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2947} 2948 2949TEST(MemorySanitizer, getgrnam_r) { 2950 struct group grp; 2951 struct group *grpres; 2952 char buf[10000]; 2953 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2954 assert(!res); 2955 EXPECT_NOT_POISONED(grp.gr_name); 2956 assert(grp.gr_name); 2957 EXPECT_NOT_POISONED(grp.gr_name[0]); 2958 EXPECT_NOT_POISONED(grp.gr_gid); 2959} 2960 2961TEST(MemorySanitizer, getgroups) { 2962 int n = getgroups(0, 0); 2963 gid_t *gids = new gid_t[n]; 2964 int res = getgroups(n, gids); 2965 ASSERT_EQ(n, res); 2966 for (int i = 0; i < n; ++i) 2967 EXPECT_NOT_POISONED(gids[i]); 2968} 2969 2970TEST(MemorySanitizer, wordexp) { 2971 wordexp_t w; 2972 int res = wordexp("a b c", &w, 0); 2973 ASSERT_EQ(0, res); 2974 ASSERT_EQ(3, w.we_wordc); 2975 ASSERT_STREQ("a", w.we_wordv[0]); 2976 ASSERT_STREQ("b", w.we_wordv[1]); 2977 ASSERT_STREQ("c", w.we_wordv[2]); 2978} 2979 2980template<class T> 2981static bool applySlt(T value, T shadow) { 2982 __msan_partial_poison(&value, &shadow, sizeof(T)); 2983 volatile bool zzz = true; 2984 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2985 // a shift-and-trunc to get at the highest bit. 2986 volatile bool v = value < 0 || zzz; 2987 return v; 2988} 2989 2990TEST(MemorySanitizer, SignedCompareWithZero) { 2991 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2992 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2993 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2994 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2995 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2996 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2997} 2998 2999template <class T, class S> 3000static T poisoned(T Va, S Sa) { 3001 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 3002 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 3003 T a; 3004 a = Va; 3005 __msan_partial_poison(&a, &Sa, sizeof(T)); 3006 return a; 3007} 3008 3009TEST(MemorySanitizer, ICmpRelational) { 3010 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 3011 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 3012 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 3013 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 3014 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 3015 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 3016 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3017 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 3018 poisoned(-1, 0xFFFFFFFFU)); 3019 3020 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 3021 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 3022 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 3023 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 3024 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 3025 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 3026 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3027 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 3028 poisoned(-1, 0xFFFFFFFFU)); 3029 3030 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 3031 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 3032 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 3033 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 3034 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 3035 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 3036 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3037 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 3038 poisoned(-1, 0xFFFFFFFFU)); 3039 3040 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 3041 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 3042 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 3043 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 3044 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 3045 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 3046 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 3047 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 3048 poisoned(-1, 0xFFFFFFFFU)); 3049 3050 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 3051 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 3052 3053 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 3054} 3055 3056#if MSAN_HAS_M128 3057TEST(MemorySanitizer, ICmpVectorRelational) { 3058 EXPECT_NOT_POISONED( 3059 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 3060 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 3061 EXPECT_NOT_POISONED( 3062 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 3063 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 3064 EXPECT_POISONED( 3065 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 3066 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 3067 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 3068 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 3069} 3070#endif 3071 3072// Volatile bitfield store is implemented as load-mask-store 3073// Test that we don't warn on the store of (uninitialized) padding. 3074struct VolatileBitfieldStruct { 3075 volatile unsigned x : 1; 3076 unsigned y : 1; 3077}; 3078 3079TEST(MemorySanitizer, VolatileBitfield) { 3080 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 3081 S->x = 1; 3082 EXPECT_NOT_POISONED((unsigned)S->x); 3083 EXPECT_POISONED((unsigned)S->y); 3084} 3085 3086TEST(MemorySanitizer, UnalignedLoad) { 3087 char x[32]; 3088 memset(x + 8, 0, 16); 3089 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 3090 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 3091 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 3092 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 3093 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 3094 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 3095 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 3096 3097 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 3098 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 3099 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 3100 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 3101 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 3102 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 3103 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 3104 3105 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 3106 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 3107 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 3108 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 3109 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 3110 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 3111 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 3112 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 3113 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 3114} 3115 3116TEST(MemorySanitizer, UnalignedStore16) { 3117 char x[5]; 3118 U2 y = 0; 3119 __msan_poison(&y, 1); 3120 __sanitizer_unaligned_store16(x + 1, y); 3121 EXPECT_POISONED(x[0]); 3122 EXPECT_POISONED(x[1]); 3123 EXPECT_NOT_POISONED(x[2]); 3124 EXPECT_POISONED(x[3]); 3125 EXPECT_POISONED(x[4]); 3126} 3127 3128TEST(MemorySanitizer, UnalignedStore32) { 3129 char x[8]; 3130 U4 y4 = 0; 3131 __msan_poison(&y4, 2); 3132 __sanitizer_unaligned_store32(x+3, y4); 3133 EXPECT_POISONED(x[0]); 3134 EXPECT_POISONED(x[1]); 3135 EXPECT_POISONED(x[2]); 3136 EXPECT_POISONED(x[3]); 3137 EXPECT_POISONED(x[4]); 3138 EXPECT_NOT_POISONED(x[5]); 3139 EXPECT_NOT_POISONED(x[6]); 3140 EXPECT_POISONED(x[7]); 3141} 3142 3143TEST(MemorySanitizer, UnalignedStore64) { 3144 char x[16]; 3145 U8 y = 0; 3146 __msan_poison(&y, 3); 3147 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 3148 __sanitizer_unaligned_store64(x+3, y); 3149 EXPECT_POISONED(x[0]); 3150 EXPECT_POISONED(x[1]); 3151 EXPECT_POISONED(x[2]); 3152 EXPECT_POISONED(x[3]); 3153 EXPECT_POISONED(x[4]); 3154 EXPECT_POISONED(x[5]); 3155 EXPECT_NOT_POISONED(x[6]); 3156 EXPECT_NOT_POISONED(x[7]); 3157 EXPECT_NOT_POISONED(x[8]); 3158 EXPECT_POISONED(x[9]); 3159 EXPECT_NOT_POISONED(x[10]); 3160 EXPECT_POISONED(x[11]); 3161} 3162 3163TEST(MemorySanitizerDr, StoreInDSOTest) { 3164 if (!__msan_has_dynamic_component()) return; 3165 char* s = new char[10]; 3166 dso_memfill(s, 9); 3167 EXPECT_NOT_POISONED(s[5]); 3168 EXPECT_POISONED(s[9]); 3169} 3170 3171int return_poisoned_int() { 3172 return ReturnPoisoned<U8>(); 3173} 3174 3175TEST(MemorySanitizerDr, ReturnFromDSOTest) { 3176 if (!__msan_has_dynamic_component()) return; 3177 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 3178} 3179 3180NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 3181 EXPECT_POISONED(x); 3182 EXPECT_POISONED(y); 3183 EXPECT_POISONED(z); 3184 return 0; 3185} 3186 3187static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 3188 EXPECT_NOT_POISONED(x); 3189 EXPECT_NOT_POISONED(y); 3190 EXPECT_NOT_POISONED(z); 3191 return 0; 3192} 3193 3194TEST(MemorySanitizerDr, CallFromDSOTest) { 3195 if (!__msan_has_dynamic_component()) return; 3196 S8* x = GetPoisoned<S8>(); 3197 S8* y = GetPoisoned<S8>(); 3198 S8* z = GetPoisoned<S8>(); 3199 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 3200 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 3201} 3202 3203static void StackStoreInDSOFn(int* x, int* y) { 3204 EXPECT_NOT_POISONED(*x); 3205 EXPECT_NOT_POISONED(*y); 3206} 3207 3208TEST(MemorySanitizerDr, StackStoreInDSOTest) { 3209 if (!__msan_has_dynamic_component()) return; 3210 dso_stack_store(StackStoreInDSOFn, 1); 3211} 3212 3213TEST(MemorySanitizerOrigins, SetGet) { 3214 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 3215 if (!TrackingOrigins()) return; 3216 int x; 3217 __msan_set_origin(&x, sizeof(x), 1234); 3218 EXPECT_EQ(1234, __msan_get_origin(&x)); 3219 __msan_set_origin(&x, sizeof(x), 5678); 3220 EXPECT_EQ(5678, __msan_get_origin(&x)); 3221 __msan_set_origin(&x, sizeof(x), 0); 3222 EXPECT_EQ(0, __msan_get_origin(&x)); 3223} 3224 3225namespace { 3226struct S { 3227 U4 dummy; 3228 U2 a; 3229 U2 b; 3230}; 3231 3232// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 3233TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 3234 if (!TrackingOrigins()) return; 3235 3236 S s; 3237 U4 origin = rand(); // NOLINT 3238 s.a = *GetPoisonedO<U2>(0, origin); 3239 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3240 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3241 3242 s.b = 42; 3243 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3244 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3245} 3246} // namespace 3247 3248template<class T, class BinaryOp> 3249INLINE 3250void BinaryOpOriginTest(BinaryOp op) { 3251 U4 ox = rand(); //NOLINT 3252 U4 oy = rand(); //NOLINT 3253 T *x = GetPoisonedO<T>(0, ox, 0); 3254 T *y = GetPoisonedO<T>(1, oy, 0); 3255 T *z = GetPoisonedO<T>(2, 0, 0); 3256 3257 *z = op(*x, *y); 3258 U4 origin = __msan_get_origin(z); 3259 EXPECT_POISONED_O(*z, origin); 3260 EXPECT_EQ(true, origin == ox || origin == oy); 3261 3262 // y is poisoned, x is not. 3263 *x = 10101; 3264 *y = *GetPoisonedO<T>(1, oy); 3265 break_optimization(x); 3266 __msan_set_origin(z, sizeof(*z), 0); 3267 *z = op(*x, *y); 3268 EXPECT_POISONED_O(*z, oy); 3269 EXPECT_EQ(__msan_get_origin(z), oy); 3270 3271 // x is poisoned, y is not. 3272 *x = *GetPoisonedO<T>(0, ox); 3273 *y = 10101010; 3274 break_optimization(y); 3275 __msan_set_origin(z, sizeof(*z), 0); 3276 *z = op(*x, *y); 3277 EXPECT_POISONED_O(*z, ox); 3278 EXPECT_EQ(__msan_get_origin(z), ox); 3279} 3280 3281template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 3282template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 3283template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 3284template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 3285template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 3286template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 3287 3288TEST(MemorySanitizerOrigins, BinaryOp) { 3289 if (!TrackingOrigins()) return; 3290 BinaryOpOriginTest<S8>(XOR<S8>); 3291 BinaryOpOriginTest<U8>(ADD<U8>); 3292 BinaryOpOriginTest<S4>(SUB<S4>); 3293 BinaryOpOriginTest<S4>(MUL<S4>); 3294 BinaryOpOriginTest<U4>(OR<U4>); 3295 BinaryOpOriginTest<U4>(AND<U4>); 3296 BinaryOpOriginTest<double>(ADD<U4>); 3297 BinaryOpOriginTest<float>(ADD<S4>); 3298 BinaryOpOriginTest<double>(ADD<double>); 3299 BinaryOpOriginTest<float>(ADD<double>); 3300} 3301 3302TEST(MemorySanitizerOrigins, Unary) { 3303 if (!TrackingOrigins()) return; 3304 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3305 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3306 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3307 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3308 3309 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3310 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3311 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3312 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3313 3314 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3315 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3316 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3317 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3318 3319 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3320 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3321 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3322 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3323 3324 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3325 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 3326} 3327 3328TEST(MemorySanitizerOrigins, EQ) { 3329 if (!TrackingOrigins()) return; 3330 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 3331 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 3332 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 3333} 3334 3335TEST(MemorySanitizerOrigins, DIV) { 3336 if (!TrackingOrigins()) return; 3337 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 3338 unsigned o = __LINE__; 3339 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 3340} 3341 3342TEST(MemorySanitizerOrigins, SHIFT) { 3343 if (!TrackingOrigins()) return; 3344 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 3345 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 3346 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 3347 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 3348 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3349 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3350} 3351 3352template<class T, int N> 3353void MemCpyTest() { 3354 int ox = __LINE__; 3355 T *x = new T[N]; 3356 T *y = new T[N]; 3357 T *z = new T[N]; 3358 T *q = new T[N]; 3359 __msan_poison(x, N * sizeof(T)); 3360 __msan_set_origin(x, N * sizeof(T), ox); 3361 __msan_set_origin(y, N * sizeof(T), 777777); 3362 __msan_set_origin(z, N * sizeof(T), 888888); 3363 EXPECT_NOT_POISONED(x); 3364 memcpy(y, x, N * sizeof(T)); 3365 EXPECT_POISONED_O(y[0], ox); 3366 EXPECT_POISONED_O(y[N/2], ox); 3367 EXPECT_POISONED_O(y[N-1], ox); 3368 EXPECT_NOT_POISONED(x); 3369 void *res = mempcpy(q, x, N * sizeof(T)); 3370 ASSERT_EQ(q + N, res); 3371 EXPECT_POISONED_O(q[0], ox); 3372 EXPECT_POISONED_O(q[N/2], ox); 3373 EXPECT_POISONED_O(q[N-1], ox); 3374 EXPECT_NOT_POISONED(x); 3375 memmove(z, x, N * sizeof(T)); 3376 EXPECT_POISONED_O(z[0], ox); 3377 EXPECT_POISONED_O(z[N/2], ox); 3378 EXPECT_POISONED_O(z[N-1], ox); 3379} 3380 3381TEST(MemorySanitizerOrigins, LargeMemCpy) { 3382 if (!TrackingOrigins()) return; 3383 MemCpyTest<U1, 10000>(); 3384 MemCpyTest<U8, 10000>(); 3385} 3386 3387TEST(MemorySanitizerOrigins, SmallMemCpy) { 3388 if (!TrackingOrigins()) return; 3389 MemCpyTest<U8, 1>(); 3390 MemCpyTest<U8, 2>(); 3391 MemCpyTest<U8, 3>(); 3392} 3393 3394TEST(MemorySanitizerOrigins, Select) { 3395 if (!TrackingOrigins()) return; 3396 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 3397 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3398 S4 x; 3399 break_optimization(&x); 3400 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 3401 3402 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 3403 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 3404} 3405 3406extern "C" 3407NOINLINE char AllocaTO() { 3408 int ar[100]; 3409 break_optimization(ar); 3410 return ar[10]; 3411 // fprintf(stderr, "Descr: %s\n", 3412 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 3413} 3414 3415TEST(MemorySanitizerOrigins, Alloca) { 3416 if (!TrackingOrigins()) return; 3417 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3418 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3419 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3420 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3421} 3422 3423// FIXME: replace with a lit-like test. 3424TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 3425 if (!TrackingOrigins()) return; 3426 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 3427} 3428 3429NOINLINE int RetvalOriginTest(U4 origin) { 3430 int *a = new int; 3431 break_optimization(a); 3432 __msan_set_origin(a, sizeof(*a), origin); 3433 int res = *a; 3434 delete a; 3435 return res; 3436} 3437 3438TEST(MemorySanitizerOrigins, Retval) { 3439 if (!TrackingOrigins()) return; 3440 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3441} 3442 3443NOINLINE void ParamOriginTest(int param, U4 origin) { 3444 EXPECT_POISONED_O(param, origin); 3445} 3446 3447TEST(MemorySanitizerOrigins, Param) { 3448 if (!TrackingOrigins()) return; 3449 int *a = new int; 3450 U4 origin = __LINE__; 3451 break_optimization(a); 3452 __msan_set_origin(a, sizeof(*a), origin); 3453 ParamOriginTest(*a, origin); 3454 delete a; 3455} 3456 3457TEST(MemorySanitizerOrigins, Invoke) { 3458 if (!TrackingOrigins()) return; 3459 StructWithDtor s; // Will cause the calls to become invokes. 3460 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3461} 3462 3463TEST(MemorySanitizerOrigins, strlen) { 3464 S8 alignment; 3465 break_optimization(&alignment); 3466 char x[4] = {'a', 'b', 0, 0}; 3467 __msan_poison(&x[2], 1); 3468 U4 origin = __LINE__; 3469 __msan_set_origin(x, sizeof(x), origin); 3470 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 3471} 3472 3473TEST(MemorySanitizerOrigins, wcslen) { 3474 wchar_t w[3] = {'a', 'b', 0}; 3475 U4 origin = __LINE__; 3476 __msan_set_origin(w, sizeof(w), origin); 3477 __msan_poison(&w[2], sizeof(wchar_t)); 3478 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3479} 3480 3481#if MSAN_HAS_M128 3482TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3483 __m128 x, y; 3484 U4 origin = __LINE__; 3485 __msan_set_origin(&x, sizeof(x), origin); 3486 __msan_poison(&x, sizeof(x)); 3487 __builtin_ia32_storeups((float*)&y, x); 3488 EXPECT_POISONED_O(y, origin); 3489} 3490#endif 3491 3492NOINLINE void RecursiveMalloc(int depth) { 3493 static int count; 3494 count++; 3495 if ((count % (1024 * 1024)) == 0) 3496 printf("RecursiveMalloc: %d\n", count); 3497 int *x1 = new int; 3498 int *x2 = new int; 3499 break_optimization(x1); 3500 break_optimization(x2); 3501 if (depth > 0) { 3502 RecursiveMalloc(depth-1); 3503 RecursiveMalloc(depth-1); 3504 } 3505 delete x1; 3506 delete x2; 3507} 3508 3509TEST(MemorySanitizer, Select) { 3510 int x; 3511 int volatile* p = &x; 3512 int z = *p ? 1 : 0; 3513 EXPECT_POISONED(z); 3514} 3515 3516TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3517 RecursiveMalloc(22); 3518} 3519 3520TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3521 size_t sizes[] = {0, 20, 5000, 1<<20}; 3522 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3523 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3524 EXPECT_EQ(alloc_size, sizes[i]); 3525 } 3526} 3527 3528TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3529 char *array = reinterpret_cast<char*>(malloc(100)); 3530 int *int_ptr = new int; 3531 3532 EXPECT_TRUE(__msan_get_ownership(array)); 3533 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3534 3535 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3536 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3537 3538 void *wild_addr = reinterpret_cast<void*>(0x1); 3539 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3540 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3541 3542 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3543 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3544 3545 // NULL is a valid argument for GetAllocatedSize but is not owned. 3546 EXPECT_FALSE(__msan_get_ownership(NULL)); 3547 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3548 3549 free(array); 3550 EXPECT_FALSE(__msan_get_ownership(array)); 3551 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3552 3553 delete int_ptr; 3554} 3555 3556TEST(MemorySanitizer, MlockTest) { 3557 EXPECT_EQ(0, mlockall(MCL_CURRENT)); 3558 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); 3559 EXPECT_EQ(0, munlockall()); 3560 EXPECT_EQ(0, munlock((void*)0x987, 0x654)); 3561} 3562