msan_test.cc revision fc81346321671489e2864f0614bf44b6af5d9bdb
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/sysinfo.h> 45#include <sys/utsname.h> 46#include <sys/mman.h> 47#include <sys/vfs.h> 48#include <dirent.h> 49#include <pwd.h> 50#include <sys/socket.h> 51#include <netdb.h> 52#include <wordexp.h> 53 54#if defined(__i386__) || defined(__x86_64__) 55# include <emmintrin.h> 56# define MSAN_HAS_M128 1 57#else 58# define MSAN_HAS_M128 0 59#endif 60 61static const int kPageSize = 4096; 62 63typedef unsigned char U1; 64typedef unsigned short U2; // NOLINT 65typedef unsigned int U4; 66typedef unsigned long long U8; // NOLINT 67typedef signed char S1; 68typedef signed short S2; // NOLINT 69typedef signed int S4; 70typedef signed long long S8; // NOLINT 71#define NOINLINE __attribute__((noinline)) 72#define INLINE __attribute__((always_inline)) 73 74static bool TrackingOrigins() { 75 S8 x; 76 __msan_set_origin(&x, sizeof(x), 0x1234); 77 U4 origin = __msan_get_origin(&x); 78 __msan_set_origin(&x, sizeof(x), 0); 79 return origin == 0x1234; 80} 81 82#define EXPECT_UMR(action) \ 83 do { \ 84 __msan_set_expect_umr(1); \ 85 action; \ 86 __msan_set_expect_umr(0); \ 87 } while (0) 88 89#define EXPECT_UMR_O(action, origin) \ 90 do { \ 91 __msan_set_expect_umr(1); \ 92 action; \ 93 __msan_set_expect_umr(0); \ 94 if (TrackingOrigins()) \ 95 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 96 } while (0) 97 98#define EXPECT_UMR_S(action, stack_origin) \ 99 do { \ 100 __msan_set_expect_umr(1); \ 101 action; \ 102 __msan_set_expect_umr(0); \ 103 U4 id = __msan_get_umr_origin(); \ 104 const char *str = __msan_get_origin_descr_if_stack(id); \ 105 if (!str || strcmp(str, stack_origin)) { \ 106 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 107 id, stack_origin, str); \ 108 EXPECT_EQ(1, 0); \ 109 } \ 110 } while (0) 111 112#define EXPECT_POISONED(x) ExpectPoisoned(x) 113 114template<typename T> 115void ExpectPoisoned(const T& t) { 116 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 117} 118 119#define EXPECT_POISONED_O(x, origin) \ 120 ExpectPoisonedWithOrigin(x, origin) 121 122template<typename T> 123void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 124 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 125 if (TrackingOrigins()) 126 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 127} 128 129#define EXPECT_POISONED_S(x, stack_origin) \ 130 ExpectPoisonedWithStackOrigin(x, stack_origin) 131 132template<typename T> 133void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 134 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 135 U4 id = __msan_get_origin((void*)&t); 136 const char *str = __msan_get_origin_descr_if_stack(id); 137 if (!str || strcmp(str, stack_origin)) { 138 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 139 id, stack_origin, str); 140 EXPECT_EQ(1, 0); 141 } 142} 143 144#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 145 146template<typename T> 147void ExpectNotPoisoned(const T& t) { 148 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 149} 150 151static U8 poisoned_array[100]; 152template<class T> 153T *GetPoisoned(int i = 0, T val = 0) { 154 T *res = (T*)&poisoned_array[i]; 155 *res = val; 156 __msan_poison(&poisoned_array[i], sizeof(T)); 157 return res; 158} 159 160template<class T> 161T *GetPoisonedO(int i, U4 origin, T val = 0) { 162 T *res = (T*)&poisoned_array[i]; 163 *res = val; 164 __msan_poison(&poisoned_array[i], sizeof(T)); 165 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 166 return res; 167} 168 169// This function returns its parameter but in such a way that compiler 170// can not prove it. 171template<class T> 172NOINLINE 173static T Ident(T t) { 174 volatile T ret = t; 175 return ret; 176} 177 178template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 179 180static volatile int g_one = 1; 181static volatile int g_zero = 0; 182static volatile int g_0 = 0; 183static volatile int g_1 = 1; 184 185S4 a_s4[100]; 186S8 a_s8[100]; 187 188// Check that malloc poisons memory. 189// A lot of tests below depend on this. 190TEST(MemorySanitizerSanity, PoisonInMalloc) { 191 int *x = (int*)malloc(sizeof(int)); 192 EXPECT_POISONED(*x); 193 free(x); 194} 195 196TEST(MemorySanitizer, NegativeTest1) { 197 S4 *x = GetPoisoned<S4>(); 198 if (g_one) 199 *x = 0; 200 EXPECT_NOT_POISONED(*x); 201} 202 203TEST(MemorySanitizer, PositiveTest1) { 204 // Load to store. 205 EXPECT_POISONED(*GetPoisoned<S1>()); 206 EXPECT_POISONED(*GetPoisoned<S2>()); 207 EXPECT_POISONED(*GetPoisoned<S4>()); 208 EXPECT_POISONED(*GetPoisoned<S8>()); 209 210 // S->S conversions. 211 EXPECT_POISONED(*GetPoisoned<S1>()); 212 EXPECT_POISONED(*GetPoisoned<S1>()); 213 EXPECT_POISONED(*GetPoisoned<S1>()); 214 215 EXPECT_POISONED(*GetPoisoned<S2>()); 216 EXPECT_POISONED(*GetPoisoned<S2>()); 217 EXPECT_POISONED(*GetPoisoned<S2>()); 218 219 EXPECT_POISONED(*GetPoisoned<S4>()); 220 EXPECT_POISONED(*GetPoisoned<S4>()); 221 EXPECT_POISONED(*GetPoisoned<S4>()); 222 223 EXPECT_POISONED(*GetPoisoned<S8>()); 224 EXPECT_POISONED(*GetPoisoned<S8>()); 225 EXPECT_POISONED(*GetPoisoned<S8>()); 226 227 // ZExt 228 EXPECT_POISONED(*GetPoisoned<U1>()); 229 EXPECT_POISONED(*GetPoisoned<U1>()); 230 EXPECT_POISONED(*GetPoisoned<U1>()); 231 EXPECT_POISONED(*GetPoisoned<U2>()); 232 EXPECT_POISONED(*GetPoisoned<U2>()); 233 EXPECT_POISONED(*GetPoisoned<U4>()); 234 235 // Unary ops. 236 EXPECT_POISONED(- *GetPoisoned<S4>()); 237 238 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 239 240 241 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 242 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 243} 244 245TEST(MemorySanitizer, Phi1) { 246 S4 c; 247 if (g_one) { 248 c = *GetPoisoned<S4>(); 249 } else { 250 break_optimization(0); 251 c = 0; 252 } 253 EXPECT_POISONED(c); 254} 255 256TEST(MemorySanitizer, Phi2) { 257 S4 i = *GetPoisoned<S4>(); 258 S4 n = g_one; 259 EXPECT_UMR(for (; i < g_one; i++);); 260 EXPECT_POISONED(i); 261} 262 263NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 264NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 265NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 266 267TEST(MemorySanitizer, ArgTest) { 268 Arg1ExpectUMR(*GetPoisoned<S4>()); 269 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 270 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 271} 272 273 274TEST(MemorySanitizer, CallAndRet) { 275 if (!__msan_has_dynamic_component()) return; 276 ReturnPoisoned<S1>(); 277 ReturnPoisoned<S2>(); 278 ReturnPoisoned<S4>(); 279 ReturnPoisoned<S8>(); 280 281 EXPECT_POISONED(ReturnPoisoned<S1>()); 282 EXPECT_POISONED(ReturnPoisoned<S2>()); 283 EXPECT_POISONED(ReturnPoisoned<S4>()); 284 EXPECT_POISONED(ReturnPoisoned<S8>()); 285} 286 287// malloc() in the following test may be optimized to produce a compile-time 288// undef value. Check that we trap on the volatile assignment anyway. 289TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 290 S4 *x = (int*)malloc(sizeof(S4)); 291 EXPECT_POISONED(*x); 292 free(x); 293} 294 295TEST(MemorySanitizer, Malloc) { 296 S4 *x = (int*)Ident(malloc(sizeof(S4))); 297 EXPECT_POISONED(*x); 298 free(x); 299} 300 301TEST(MemorySanitizer, Realloc) { 302 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 303 EXPECT_POISONED(x[0]); 304 x[0] = 1; 305 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 306 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 307 EXPECT_POISONED(x[1]); 308 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 309 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 310 EXPECT_POISONED(x[2]); 311 EXPECT_POISONED(x[1]); 312 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 313 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 314 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 315 EXPECT_POISONED(x[1]); 316 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 317 EXPECT_POISONED(x[1]); 318 EXPECT_POISONED(x[2]); 319 free(x); 320} 321 322TEST(MemorySanitizer, Calloc) { 323 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 324 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 325 // EXPECT_EQ(0, *x); 326 free(x); 327} 328 329TEST(MemorySanitizer, AndOr) { 330 U4 *p = GetPoisoned<U4>(); 331 // We poison two bytes in the midle of a 4-byte word to make the test 332 // correct regardless of endianness. 333 ((U1*)p)[1] = 0; 334 ((U1*)p)[2] = 0xff; 335 EXPECT_NOT_POISONED(*p & 0x00ffff00); 336 EXPECT_NOT_POISONED(*p & 0x00ff0000); 337 EXPECT_NOT_POISONED(*p & 0x0000ff00); 338 EXPECT_POISONED(*p & 0xff000000); 339 EXPECT_POISONED(*p & 0x000000ff); 340 EXPECT_POISONED(*p & 0x0000ffff); 341 EXPECT_POISONED(*p & 0xffff0000); 342 343 EXPECT_NOT_POISONED(*p | 0xff0000ff); 344 EXPECT_NOT_POISONED(*p | 0xff00ffff); 345 EXPECT_NOT_POISONED(*p | 0xffff00ff); 346 EXPECT_POISONED(*p | 0xff000000); 347 EXPECT_POISONED(*p | 0x000000ff); 348 EXPECT_POISONED(*p | 0x0000ffff); 349 EXPECT_POISONED(*p | 0xffff0000); 350 351 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 352} 353 354template<class T> 355static bool applyNot(T value, T shadow) { 356 __msan_partial_poison(&value, &shadow, sizeof(T)); 357 return !value; 358} 359 360TEST(MemorySanitizer, Not) { 361 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 362 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 363 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 364 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 365 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 366 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 367 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 368 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 369 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 370 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 371 372 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 373 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 374 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 375 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 376 377 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 378 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 379} 380 381TEST(MemorySanitizer, Shift) { 382 U4 *up = GetPoisoned<U4>(); 383 ((U1*)up)[0] = 0; 384 ((U1*)up)[3] = 0xff; 385 EXPECT_NOT_POISONED(*up >> 30); 386 EXPECT_NOT_POISONED(*up >> 24); 387 EXPECT_POISONED(*up >> 23); 388 EXPECT_POISONED(*up >> 10); 389 390 EXPECT_NOT_POISONED(*up << 30); 391 EXPECT_NOT_POISONED(*up << 24); 392 EXPECT_POISONED(*up << 23); 393 EXPECT_POISONED(*up << 10); 394 395 S4 *sp = (S4*)up; 396 EXPECT_NOT_POISONED(*sp >> 30); 397 EXPECT_NOT_POISONED(*sp >> 24); 398 EXPECT_POISONED(*sp >> 23); 399 EXPECT_POISONED(*sp >> 10); 400 401 sp = GetPoisoned<S4>(); 402 ((S1*)sp)[1] = 0; 403 ((S1*)sp)[2] = 0; 404 EXPECT_POISONED(*sp >> 31); 405 406 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 407 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 408} 409 410NOINLINE static int GetPoisonedZero() { 411 int *zero = new int; 412 *zero = 0; 413 __msan_poison(zero, sizeof(*zero)); 414 int res = *zero; 415 delete zero; 416 return res; 417} 418 419TEST(MemorySanitizer, LoadFromDirtyAddress) { 420 int *a = new int; 421 *a = 0; 422 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 423 delete a; 424} 425 426TEST(MemorySanitizer, StoreToDirtyAddress) { 427 int *a = new int; 428 EXPECT_UMR(a[GetPoisonedZero()] = 0); 429 break_optimization(a); 430 delete a; 431} 432 433 434NOINLINE void StackTestFunc() { 435 S4 p4; 436 S4 ok4 = 1; 437 S2 p2; 438 S2 ok2 = 1; 439 S1 p1; 440 S1 ok1 = 1; 441 break_optimization(&p4); 442 break_optimization(&ok4); 443 break_optimization(&p2); 444 break_optimization(&ok2); 445 break_optimization(&p1); 446 break_optimization(&ok1); 447 448 EXPECT_POISONED(p4); 449 EXPECT_POISONED(p2); 450 EXPECT_POISONED(p1); 451 EXPECT_NOT_POISONED(ok1); 452 EXPECT_NOT_POISONED(ok2); 453 EXPECT_NOT_POISONED(ok4); 454} 455 456TEST(MemorySanitizer, StackTest) { 457 StackTestFunc(); 458} 459 460NOINLINE void StackStressFunc() { 461 int foo[10000]; 462 break_optimization(foo); 463} 464 465TEST(MemorySanitizer, DISABLED_StackStressTest) { 466 for (int i = 0; i < 1000000; i++) 467 StackStressFunc(); 468} 469 470template<class T> 471void TestFloatingPoint() { 472 static volatile T v; 473 static T g[100]; 474 break_optimization(&g); 475 T *x = GetPoisoned<T>(); 476 T *y = GetPoisoned<T>(1); 477 EXPECT_POISONED(*x); 478 EXPECT_POISONED((long long)*x); 479 EXPECT_POISONED((int)*x); 480 g[0] = *x; 481 g[1] = *x + *y; 482 g[2] = *x - *y; 483 g[3] = *x * *y; 484} 485 486TEST(MemorySanitizer, FloatingPointTest) { 487 TestFloatingPoint<float>(); 488 TestFloatingPoint<double>(); 489} 490 491TEST(MemorySanitizer, DynMem) { 492 S4 x = 0; 493 S4 *y = GetPoisoned<S4>(); 494 memcpy(y, &x, g_one * sizeof(S4)); 495 EXPECT_NOT_POISONED(*y); 496} 497 498static char *DynRetTestStr; 499 500TEST(MemorySanitizer, DynRet) { 501 if (!__msan_has_dynamic_component()) return; 502 ReturnPoisoned<S8>(); 503 EXPECT_NOT_POISONED(clearenv()); 504} 505 506 507TEST(MemorySanitizer, DynRet1) { 508 if (!__msan_has_dynamic_component()) return; 509 ReturnPoisoned<S8>(); 510} 511 512struct LargeStruct { 513 S4 x[10]; 514}; 515 516NOINLINE 517LargeStruct LargeRetTest() { 518 LargeStruct res; 519 res.x[0] = *GetPoisoned<S4>(); 520 res.x[1] = *GetPoisoned<S4>(); 521 res.x[2] = *GetPoisoned<S4>(); 522 res.x[3] = *GetPoisoned<S4>(); 523 res.x[4] = *GetPoisoned<S4>(); 524 res.x[5] = *GetPoisoned<S4>(); 525 res.x[6] = *GetPoisoned<S4>(); 526 res.x[7] = *GetPoisoned<S4>(); 527 res.x[8] = *GetPoisoned<S4>(); 528 res.x[9] = *GetPoisoned<S4>(); 529 return res; 530} 531 532TEST(MemorySanitizer, strcmp) { 533 char s1[10]; 534 char s2[10]; 535 strncpy(s1, "foo", 10); 536 s2[0] = 'f'; 537 s2[1] = 'n'; 538 EXPECT_GT(strcmp(s1, s2), 0); 539 s2[1] = 'o'; 540 int res; 541 EXPECT_UMR(res = strcmp(s1, s2)); 542 EXPECT_NOT_POISONED(res); 543 EXPECT_EQ(strncmp(s1, s2, 1), 0); 544} 545 546TEST(MemorySanitizer, LargeRet) { 547 LargeStruct a = LargeRetTest(); 548 EXPECT_POISONED(a.x[0]); 549 EXPECT_POISONED(a.x[9]); 550} 551 552TEST(MemorySanitizer, strerror) { 553 char *buf = strerror(EINVAL); 554 EXPECT_NOT_POISONED(strlen(buf)); 555 buf = strerror(123456); 556 EXPECT_NOT_POISONED(strlen(buf)); 557} 558 559TEST(MemorySanitizer, strerror_r) { 560 errno = 0; 561 char buf[1000]; 562 char *res = strerror_r(EINVAL, buf, sizeof(buf)); 563 ASSERT_EQ(0, errno); 564 if (!res) res = buf; // POSIX version success. 565 EXPECT_NOT_POISONED(strlen(res)); 566} 567 568TEST(MemorySanitizer, fread) { 569 char *x = new char[32]; 570 FILE *f = fopen("/proc/self/stat", "r"); 571 assert(f); 572 fread(x, 1, 32, f); 573 EXPECT_NOT_POISONED(x[0]); 574 EXPECT_NOT_POISONED(x[16]); 575 EXPECT_NOT_POISONED(x[31]); 576 fclose(f); 577 delete x; 578} 579 580TEST(MemorySanitizer, read) { 581 char *x = new char[32]; 582 int fd = open("/proc/self/stat", O_RDONLY); 583 assert(fd > 0); 584 int sz = read(fd, x, 32); 585 assert(sz == 32); 586 EXPECT_NOT_POISONED(x[0]); 587 EXPECT_NOT_POISONED(x[16]); 588 EXPECT_NOT_POISONED(x[31]); 589 close(fd); 590 delete x; 591} 592 593TEST(MemorySanitizer, pread) { 594 char *x = new char[32]; 595 int fd = open("/proc/self/stat", O_RDONLY); 596 assert(fd > 0); 597 int sz = pread(fd, x, 32, 0); 598 assert(sz == 32); 599 EXPECT_NOT_POISONED(x[0]); 600 EXPECT_NOT_POISONED(x[16]); 601 EXPECT_NOT_POISONED(x[31]); 602 close(fd); 603 delete x; 604} 605 606TEST(MemorySanitizer, readv) { 607 char buf[2011]; 608 struct iovec iov[2]; 609 iov[0].iov_base = buf + 1; 610 iov[0].iov_len = 5; 611 iov[1].iov_base = buf + 10; 612 iov[1].iov_len = 2000; 613 int fd = open("/proc/self/stat", O_RDONLY); 614 assert(fd > 0); 615 int sz = readv(fd, iov, 2); 616 ASSERT_LT(sz, 5 + 2000); 617 ASSERT_GT(sz, iov[0].iov_len); 618 EXPECT_POISONED(buf[0]); 619 EXPECT_NOT_POISONED(buf[1]); 620 EXPECT_NOT_POISONED(buf[5]); 621 EXPECT_POISONED(buf[6]); 622 EXPECT_POISONED(buf[9]); 623 EXPECT_NOT_POISONED(buf[10]); 624 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 625 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 626 close(fd); 627} 628 629TEST(MemorySanitizer, preadv) { 630 char buf[2011]; 631 struct iovec iov[2]; 632 iov[0].iov_base = buf + 1; 633 iov[0].iov_len = 5; 634 iov[1].iov_base = buf + 10; 635 iov[1].iov_len = 2000; 636 int fd = open("/proc/self/stat", O_RDONLY); 637 assert(fd > 0); 638 int sz = preadv(fd, iov, 2, 3); 639 ASSERT_LT(sz, 5 + 2000); 640 ASSERT_GT(sz, iov[0].iov_len); 641 EXPECT_POISONED(buf[0]); 642 EXPECT_NOT_POISONED(buf[1]); 643 EXPECT_NOT_POISONED(buf[5]); 644 EXPECT_POISONED(buf[6]); 645 EXPECT_POISONED(buf[9]); 646 EXPECT_NOT_POISONED(buf[10]); 647 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 648 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 649 close(fd); 650} 651 652// FIXME: fails now. 653TEST(MemorySanitizer, DISABLED_ioctl) { 654 struct winsize ws; 655 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 656 EXPECT_NOT_POISONED(ws.ws_col); 657} 658 659TEST(MemorySanitizer, readlink) { 660 char *x = new char[1000]; 661 readlink("/proc/self/exe", x, 1000); 662 EXPECT_NOT_POISONED(x[0]); 663 delete [] x; 664} 665 666 667TEST(MemorySanitizer, stat) { 668 struct stat* st = new struct stat; 669 int res = stat("/proc/self/stat", st); 670 assert(!res); 671 EXPECT_NOT_POISONED(st->st_dev); 672 EXPECT_NOT_POISONED(st->st_mode); 673 EXPECT_NOT_POISONED(st->st_size); 674} 675 676TEST(MemorySanitizer, fstatat) { 677 struct stat* st = new struct stat; 678 int dirfd = open("/proc/self", O_RDONLY); 679 assert(dirfd > 0); 680 int res = fstatat(dirfd, "stat", st, 0); 681 assert(!res); 682 EXPECT_NOT_POISONED(st->st_dev); 683 EXPECT_NOT_POISONED(st->st_mode); 684 EXPECT_NOT_POISONED(st->st_size); 685 close(dirfd); 686} 687 688TEST(MemorySanitizer, statfs) { 689 struct statfs* st = new struct statfs; 690 int res = statfs("/", st); 691 assert(!res); 692 EXPECT_NOT_POISONED(st->f_type); 693 EXPECT_NOT_POISONED(st->f_bfree); 694 EXPECT_NOT_POISONED(st->f_namelen); 695} 696 697TEST(MemorySanitizer, pipe) { 698 int* pipefd = new int[2]; 699 int res = pipe(pipefd); 700 assert(!res); 701 EXPECT_NOT_POISONED(pipefd[0]); 702 EXPECT_NOT_POISONED(pipefd[1]); 703 close(pipefd[0]); 704 close(pipefd[1]); 705} 706 707TEST(MemorySanitizer, pipe2) { 708 int* pipefd = new int[2]; 709 int res = pipe2(pipefd, O_NONBLOCK); 710 assert(!res); 711 EXPECT_NOT_POISONED(pipefd[0]); 712 EXPECT_NOT_POISONED(pipefd[1]); 713 close(pipefd[0]); 714 close(pipefd[1]); 715} 716 717TEST(MemorySanitizer, socketpair) { 718 int sv[2]; 719 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 720 assert(!res); 721 EXPECT_NOT_POISONED(sv[0]); 722 EXPECT_NOT_POISONED(sv[1]); 723 close(sv[0]); 724 close(sv[1]); 725} 726 727TEST(MemorySanitizer, poll) { 728 int* pipefd = new int[2]; 729 int res = pipe(pipefd); 730 ASSERT_EQ(0, res); 731 732 char data = 42; 733 res = write(pipefd[1], &data, 1); 734 ASSERT_EQ(1, res); 735 736 pollfd fds[2]; 737 fds[0].fd = pipefd[0]; 738 fds[0].events = POLLIN; 739 fds[1].fd = pipefd[1]; 740 fds[1].events = POLLIN; 741 res = poll(fds, 2, 500); 742 ASSERT_EQ(1, res); 743 EXPECT_NOT_POISONED(fds[0].revents); 744 EXPECT_NOT_POISONED(fds[1].revents); 745 746 close(pipefd[0]); 747 close(pipefd[1]); 748} 749 750TEST(MemorySanitizer, ppoll) { 751 int* pipefd = new int[2]; 752 int res = pipe(pipefd); 753 ASSERT_EQ(0, res); 754 755 char data = 42; 756 res = write(pipefd[1], &data, 1); 757 ASSERT_EQ(1, res); 758 759 pollfd fds[2]; 760 fds[0].fd = pipefd[0]; 761 fds[0].events = POLLIN; 762 fds[1].fd = pipefd[1]; 763 fds[1].events = POLLIN; 764 sigset_t ss; 765 sigemptyset(&ss); 766 res = ppoll(fds, 2, NULL, &ss); 767 ASSERT_EQ(1, res); 768 EXPECT_NOT_POISONED(fds[0].revents); 769 EXPECT_NOT_POISONED(fds[1].revents); 770 771 close(pipefd[0]); 772 close(pipefd[1]); 773} 774 775TEST(MemorySanitizer, poll_positive) { 776 int* pipefd = new int[2]; 777 int res = pipe(pipefd); 778 ASSERT_EQ(0, res); 779 780 pollfd fds[2]; 781 fds[0].fd = pipefd[0]; 782 fds[0].events = POLLIN; 783 // fds[1].fd uninitialized 784 fds[1].events = POLLIN; 785 EXPECT_UMR(poll(fds, 2, 0)); 786 787 close(pipefd[0]); 788 close(pipefd[1]); 789} 790 791TEST(MemorySanitizer, bind_getsockname) { 792 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 793 794 struct sockaddr_in sai; 795 memset(&sai, 0, sizeof(sai)); 796 sai.sin_family = AF_UNIX; 797 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 798 799 assert(!res); 800 char buf[200]; 801 socklen_t addrlen; 802 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 803 804 addrlen = sizeof(buf); 805 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 806 EXPECT_NOT_POISONED(addrlen); 807 EXPECT_NOT_POISONED(buf[0]); 808 EXPECT_NOT_POISONED(buf[addrlen - 1]); 809 EXPECT_POISONED(buf[addrlen]); 810 close(sock); 811} 812 813TEST(MemorySanitizer, accept) { 814 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 815 ASSERT_LT(0, listen_socket); 816 817 struct sockaddr_in sai; 818 sai.sin_family = AF_INET; 819 sai.sin_port = 0; 820 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 821 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 822 ASSERT_EQ(0, res); 823 824 res = listen(listen_socket, 1); 825 ASSERT_EQ(0, res); 826 827 socklen_t sz = sizeof(sai); 828 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 829 ASSERT_EQ(0, res); 830 ASSERT_EQ(sizeof(sai), sz); 831 832 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 833 ASSERT_LT(0, connect_socket); 834 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 835 ASSERT_EQ(0, res); 836 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 837 ASSERT_EQ(-1, res); 838 ASSERT_EQ(EINPROGRESS, errno); 839 840 __msan_poison(&sai, sizeof(sai)); 841 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 842 ASSERT_LT(0, new_sock); 843 ASSERT_EQ(sizeof(sai), sz); 844 EXPECT_NOT_POISONED(sai); 845 846 __msan_poison(&sai, sizeof(sai)); 847 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 848 ASSERT_EQ(0, res); 849 ASSERT_EQ(sizeof(sai), sz); 850 EXPECT_NOT_POISONED(sai); 851 852 close(new_sock); 853 close(connect_socket); 854 close(listen_socket); 855} 856 857TEST(MemorySanitizer, getaddrinfo) { 858 struct addrinfo *ai; 859 struct addrinfo hints; 860 memset(&hints, 0, sizeof(hints)); 861 hints.ai_family = AF_INET; 862 int res = getaddrinfo("localhost", NULL, &hints, &ai); 863 ASSERT_EQ(0, res); 864 EXPECT_NOT_POISONED(*ai); 865 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 866 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 867} 868 869TEST(MemorySanitizer, getnameinfo) { 870 struct sockaddr_in sai; 871 sai.sin_family = AF_INET; 872 sai.sin_port = 80; 873 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 874 char host[500]; 875 char serv[500]; 876 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 877 sizeof(host), serv, sizeof(serv), 0); 878 ASSERT_EQ(0, res); 879 EXPECT_NOT_POISONED(host[0]); 880 EXPECT_POISONED(host[sizeof(host) - 1]); 881 882 ASSERT_NE(0, strlen(host)); 883 EXPECT_NOT_POISONED(serv[0]); 884 EXPECT_POISONED(serv[sizeof(serv) - 1]); 885 ASSERT_NE(0, strlen(serv)); 886} 887 888#define EXPECT_HOSTENT_NOT_POISONED(he) \ 889 do { \ 890 EXPECT_NOT_POISONED(*(he)); \ 891 ASSERT_NE((void *) 0, (he)->h_name); \ 892 ASSERT_NE((void *) 0, (he)->h_aliases); \ 893 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 894 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 895 char **p = (he)->h_aliases; \ 896 while (*p) { \ 897 EXPECT_NOT_POISONED(strlen(*p)); \ 898 ++p; \ 899 } \ 900 char **q = (he)->h_addr_list; \ 901 while (*q) { \ 902 EXPECT_NOT_POISONED(*q[0]); \ 903 ++q; \ 904 } \ 905 EXPECT_NOT_POISONED(*q); \ 906 } while (0) 907 908TEST(MemorySanitizer, gethostent) { 909 struct hostent *he = gethostent(); 910 ASSERT_NE((void *)NULL, he); 911 EXPECT_HOSTENT_NOT_POISONED(he); 912} 913 914#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 915 916TEST(MemorySanitizer, gethostbyname) { 917 struct hostent *he = gethostbyname("localhost"); 918 ASSERT_NE((void *)NULL, he); 919 EXPECT_HOSTENT_NOT_POISONED(he); 920} 921 922#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 923 924TEST(MemorySanitizer, gethostbyname2) { 925 struct hostent *he = gethostbyname2("localhost", AF_INET); 926 ASSERT_NE((void *)NULL, he); 927 EXPECT_HOSTENT_NOT_POISONED(he); 928} 929 930TEST(MemorySanitizer, gethostbyaddr) { 931 in_addr_t addr = inet_addr("127.0.0.1"); 932 EXPECT_NOT_POISONED(addr); 933 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 934 ASSERT_NE((void *)NULL, he); 935 EXPECT_HOSTENT_NOT_POISONED(he); 936} 937 938TEST(MemorySanitizer, gethostent_r) { 939 char buf[2000]; 940 struct hostent he; 941 struct hostent *result; 942 int err; 943 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 944 ASSERT_EQ(0, res); 945 EXPECT_NOT_POISONED(result); 946 ASSERT_NE((void *)NULL, result); 947 EXPECT_HOSTENT_NOT_POISONED(result); 948 EXPECT_NOT_POISONED(err); 949} 950 951TEST(MemorySanitizer, gethostbyname_r) { 952 char buf[2000]; 953 struct hostent he; 954 struct hostent *result; 955 int err; 956 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 957 ASSERT_EQ(0, res); 958 EXPECT_NOT_POISONED(result); 959 ASSERT_NE((void *)NULL, result); 960 EXPECT_HOSTENT_NOT_POISONED(result); 961 EXPECT_NOT_POISONED(err); 962} 963 964TEST(MemorySanitizer, gethostbyname2_r) { 965 char buf[2000]; 966 struct hostent he; 967 struct hostent *result; 968 int err; 969 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 970 &result, &err); 971 ASSERT_EQ(0, res); 972 EXPECT_NOT_POISONED(result); 973 ASSERT_NE((void *)NULL, result); 974 EXPECT_HOSTENT_NOT_POISONED(result); 975 EXPECT_NOT_POISONED(err); 976} 977 978TEST(MemorySanitizer, gethostbyaddr_r) { 979 char buf[2000]; 980 struct hostent he; 981 struct hostent *result; 982 int err; 983 in_addr_t addr = inet_addr("127.0.0.1"); 984 EXPECT_NOT_POISONED(addr); 985 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 986 &result, &err); 987 ASSERT_EQ(0, res); 988 EXPECT_NOT_POISONED(result); 989 ASSERT_NE((void *)NULL, result); 990 EXPECT_HOSTENT_NOT_POISONED(result); 991 EXPECT_NOT_POISONED(err); 992} 993 994TEST(MemorySanitizer, getsockopt) { 995 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 996 struct linger l[2]; 997 socklen_t sz = sizeof(l[0]); 998 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 999 ASSERT_EQ(0, res); 1000 ASSERT_EQ(sizeof(l[0]), sz); 1001 EXPECT_NOT_POISONED(l[0]); 1002 EXPECT_POISONED(*(char *)(l + 1)); 1003} 1004 1005TEST(MemorySanitizer, getcwd) { 1006 char path[PATH_MAX + 1]; 1007 char* res = getcwd(path, sizeof(path)); 1008 assert(res); 1009 EXPECT_NOT_POISONED(path[0]); 1010} 1011 1012TEST(MemorySanitizer, getcwd_gnu) { 1013 char* res = getcwd(NULL, 0); 1014 assert(res); 1015 EXPECT_NOT_POISONED(res[0]); 1016 free(res); 1017} 1018 1019TEST(MemorySanitizer, get_current_dir_name) { 1020 char* res = get_current_dir_name(); 1021 assert(res); 1022 EXPECT_NOT_POISONED(res[0]); 1023 free(res); 1024} 1025 1026TEST(MemorySanitizer, confstr) { 1027 char buf[3]; 1028 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1029 ASSERT_GT(res, sizeof(buf)); 1030 EXPECT_NOT_POISONED(buf[0]); 1031 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1032 1033 char buf2[1000]; 1034 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1035 ASSERT_LT(res, sizeof(buf2)); 1036 EXPECT_NOT_POISONED(buf2[0]); 1037 EXPECT_NOT_POISONED(buf2[res - 1]); 1038 EXPECT_POISONED(buf2[res]); 1039 ASSERT_EQ(res, strlen(buf2) + 1); 1040} 1041 1042TEST(MemorySanitizer, readdir) { 1043 DIR *dir = opendir("."); 1044 struct dirent *d = readdir(dir); 1045 assert(d); 1046 EXPECT_NOT_POISONED(d->d_name[0]); 1047 closedir(dir); 1048} 1049 1050TEST(MemorySanitizer, readdir_r) { 1051 DIR *dir = opendir("."); 1052 struct dirent d; 1053 struct dirent *pd; 1054 int res = readdir_r(dir, &d, &pd); 1055 assert(!res); 1056 EXPECT_NOT_POISONED(pd); 1057 EXPECT_NOT_POISONED(d.d_name[0]); 1058 closedir(dir); 1059} 1060 1061TEST(MemorySanitizer, realpath) { 1062 const char* relpath = "."; 1063 char path[PATH_MAX + 1]; 1064 char* res = realpath(relpath, path); 1065 assert(res); 1066 EXPECT_NOT_POISONED(path[0]); 1067} 1068 1069TEST(MemorySanitizer, realpath_null) { 1070 const char* relpath = "."; 1071 char* res = realpath(relpath, NULL); 1072 printf("%d, %s\n", errno, strerror(errno)); 1073 assert(res); 1074 EXPECT_NOT_POISONED(res[0]); 1075 free(res); 1076} 1077 1078TEST(MemorySanitizer, canonicalize_file_name) { 1079 const char* relpath = "."; 1080 char* res = canonicalize_file_name(relpath); 1081 assert(res); 1082 EXPECT_NOT_POISONED(res[0]); 1083 free(res); 1084} 1085 1086extern char **environ; 1087 1088TEST(MemorySanitizer, setenv) { 1089 setenv("AAA", "BBB", 1); 1090 for (char **envp = environ; *envp; ++envp) { 1091 EXPECT_NOT_POISONED(*envp); 1092 EXPECT_NOT_POISONED(*envp[0]); 1093 } 1094} 1095 1096TEST(MemorySanitizer, putenv) { 1097 char s[] = "AAA=BBB"; 1098 putenv(s); 1099 for (char **envp = environ; *envp; ++envp) { 1100 EXPECT_NOT_POISONED(*envp); 1101 EXPECT_NOT_POISONED(*envp[0]); 1102 } 1103} 1104 1105TEST(MemorySanitizer, memcpy) { 1106 char* x = new char[2]; 1107 char* y = new char[2]; 1108 x[0] = 1; 1109 x[1] = *GetPoisoned<char>(); 1110 memcpy(y, x, 2); 1111 EXPECT_NOT_POISONED(y[0]); 1112 EXPECT_POISONED(y[1]); 1113} 1114 1115TEST(MemorySanitizer, memmove) { 1116 char* x = new char[2]; 1117 char* y = new char[2]; 1118 x[0] = 1; 1119 x[1] = *GetPoisoned<char>(); 1120 memmove(y, x, 2); 1121 EXPECT_NOT_POISONED(y[0]); 1122 EXPECT_POISONED(y[1]); 1123} 1124 1125TEST(MemorySanitizer, bcopy) { 1126 char* x = new char[2]; 1127 char* y = new char[2]; 1128 x[0] = 1; 1129 x[1] = *GetPoisoned<char>(); 1130 bcopy(x, y, 2); 1131 EXPECT_NOT_POISONED(y[0]); 1132 EXPECT_POISONED(y[1]); 1133} 1134 1135TEST(MemorySanitizer, strdup) { 1136 char buf[4] = "abc"; 1137 __msan_poison(buf + 2, sizeof(*buf)); 1138 char *x = strdup(buf); 1139 EXPECT_NOT_POISONED(x[0]); 1140 EXPECT_NOT_POISONED(x[1]); 1141 EXPECT_POISONED(x[2]); 1142 EXPECT_NOT_POISONED(x[3]); 1143 free(x); 1144} 1145 1146TEST(MemorySanitizer, strndup) { 1147 char buf[4] = "abc"; 1148 __msan_poison(buf + 2, sizeof(*buf)); 1149 char *x = strndup(buf, 3); 1150 EXPECT_NOT_POISONED(x[0]); 1151 EXPECT_NOT_POISONED(x[1]); 1152 EXPECT_POISONED(x[2]); 1153 EXPECT_NOT_POISONED(x[3]); 1154 free(x); 1155} 1156 1157TEST(MemorySanitizer, strndup_short) { 1158 char buf[4] = "abc"; 1159 __msan_poison(buf + 1, sizeof(*buf)); 1160 __msan_poison(buf + 2, sizeof(*buf)); 1161 char *x = strndup(buf, 2); 1162 EXPECT_NOT_POISONED(x[0]); 1163 EXPECT_POISONED(x[1]); 1164 EXPECT_NOT_POISONED(x[2]); 1165 free(x); 1166} 1167 1168 1169template<class T, int size> 1170void TestOverlapMemmove() { 1171 T *x = new T[size]; 1172 assert(size >= 3); 1173 x[2] = 0; 1174 memmove(x, x + 1, (size - 1) * sizeof(T)); 1175 EXPECT_NOT_POISONED(x[1]); 1176 if (!__msan_has_dynamic_component()) { 1177 // FIXME: under DR we will lose this information 1178 // because accesses in memmove will unpoisin the shadow. 1179 // We need to use our own memove implementation instead of libc's. 1180 EXPECT_POISONED(x[0]); 1181 EXPECT_POISONED(x[2]); 1182 } 1183 delete [] x; 1184} 1185 1186TEST(MemorySanitizer, overlap_memmove) { 1187 TestOverlapMemmove<U1, 10>(); 1188 TestOverlapMemmove<U1, 1000>(); 1189 TestOverlapMemmove<U8, 4>(); 1190 TestOverlapMemmove<U8, 1000>(); 1191} 1192 1193TEST(MemorySanitizer, strcpy) { // NOLINT 1194 char* x = new char[3]; 1195 char* y = new char[3]; 1196 x[0] = 'a'; 1197 x[1] = *GetPoisoned<char>(1, 1); 1198 x[2] = 0; 1199 strcpy(y, x); // NOLINT 1200 EXPECT_NOT_POISONED(y[0]); 1201 EXPECT_POISONED(y[1]); 1202 EXPECT_NOT_POISONED(y[2]); 1203} 1204 1205TEST(MemorySanitizer, strncpy) { // NOLINT 1206 char* x = new char[3]; 1207 char* y = new char[3]; 1208 x[0] = 'a'; 1209 x[1] = *GetPoisoned<char>(1, 1); 1210 x[2] = 0; 1211 strncpy(y, x, 2); // NOLINT 1212 EXPECT_NOT_POISONED(y[0]); 1213 EXPECT_POISONED(y[1]); 1214 EXPECT_POISONED(y[2]); 1215} 1216 1217TEST(MemorySanitizer, stpcpy) { // NOLINT 1218 char* x = new char[3]; 1219 char* y = new char[3]; 1220 x[0] = 'a'; 1221 x[1] = *GetPoisoned<char>(1, 1); 1222 x[2] = 0; 1223 char *res = stpcpy(y, x); // NOLINT 1224 ASSERT_EQ(res, y + 2); 1225 EXPECT_NOT_POISONED(y[0]); 1226 EXPECT_POISONED(y[1]); 1227 EXPECT_NOT_POISONED(y[2]); 1228} 1229 1230TEST(MemorySanitizer, strtol) { 1231 char *e; 1232 assert(1 == strtol("1", &e, 10)); 1233 EXPECT_NOT_POISONED((S8) e); 1234} 1235 1236TEST(MemorySanitizer, strtoll) { 1237 char *e; 1238 assert(1 == strtoll("1", &e, 10)); 1239 EXPECT_NOT_POISONED((S8) e); 1240} 1241 1242TEST(MemorySanitizer, strtoul) { 1243 char *e; 1244 assert(1 == strtoul("1", &e, 10)); 1245 EXPECT_NOT_POISONED((S8) e); 1246} 1247 1248TEST(MemorySanitizer, strtoull) { 1249 char *e; 1250 assert(1 == strtoull("1", &e, 10)); 1251 EXPECT_NOT_POISONED((S8) e); 1252} 1253 1254TEST(MemorySanitizer, strtoimax) { 1255 char *e; 1256 assert(1 == strtoimax("1", &e, 10)); 1257 EXPECT_NOT_POISONED((S8) e); 1258} 1259 1260TEST(MemorySanitizer, strtoumax) { 1261 char *e; 1262 assert(1 == strtoumax("1", &e, 10)); 1263 EXPECT_NOT_POISONED((S8) e); 1264} 1265 1266TEST(MemorySanitizer, strtod) { 1267 char *e; 1268 assert(0 != strtod("1.5", &e)); 1269 EXPECT_NOT_POISONED((S8) e); 1270} 1271 1272#ifdef __GLIBC__ 1273extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1274TEST(MemorySanitizer, __strtod_l) { 1275 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); 1276 char *e; 1277 assert(0 != __strtod_l("1.5", &e, loc)); 1278 EXPECT_NOT_POISONED((S8) e); 1279 freelocale(loc); 1280} 1281#endif // __GLIBC__ 1282 1283TEST(MemorySanitizer, strtof) { 1284 char *e; 1285 assert(0 != strtof("1.5", &e)); 1286 EXPECT_NOT_POISONED((S8) e); 1287} 1288 1289TEST(MemorySanitizer, strtold) { 1290 char *e; 1291 assert(0 != strtold("1.5", &e)); 1292 EXPECT_NOT_POISONED((S8) e); 1293} 1294 1295TEST(MemorySanitizer, modf) { 1296 double x, y; 1297 x = modf(2.1, &y); 1298 EXPECT_NOT_POISONED(y); 1299} 1300 1301TEST(MemorySanitizer, modff) { 1302 float x, y; 1303 x = modff(2.1, &y); 1304 EXPECT_NOT_POISONED(y); 1305} 1306 1307TEST(MemorySanitizer, modfl) { 1308 long double x, y; 1309 x = modfl(2.1, &y); 1310 EXPECT_NOT_POISONED(y); 1311} 1312 1313TEST(MemorySanitizer, sprintf) { // NOLINT 1314 char buff[10]; 1315 break_optimization(buff); 1316 EXPECT_POISONED(buff[0]); 1317 int res = sprintf(buff, "%d", 1234567); // NOLINT 1318 assert(res == 7); 1319 assert(buff[0] == '1'); 1320 assert(buff[1] == '2'); 1321 assert(buff[2] == '3'); 1322 assert(buff[6] == '7'); 1323 assert(buff[7] == 0); 1324 EXPECT_POISONED(buff[8]); 1325} 1326 1327TEST(MemorySanitizer, snprintf) { 1328 char buff[10]; 1329 break_optimization(buff); 1330 EXPECT_POISONED(buff[0]); 1331 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1332 assert(res == 7); 1333 assert(buff[0] == '1'); 1334 assert(buff[1] == '2'); 1335 assert(buff[2] == '3'); 1336 assert(buff[6] == '7'); 1337 assert(buff[7] == 0); 1338 EXPECT_POISONED(buff[8]); 1339} 1340 1341TEST(MemorySanitizer, swprintf) { 1342 wchar_t buff[10]; 1343 assert(sizeof(wchar_t) == 4); 1344 break_optimization(buff); 1345 EXPECT_POISONED(buff[0]); 1346 int res = swprintf(buff, 9, L"%d", 1234567); 1347 assert(res == 7); 1348 assert(buff[0] == '1'); 1349 assert(buff[1] == '2'); 1350 assert(buff[2] == '3'); 1351 assert(buff[6] == '7'); 1352 assert(buff[7] == 0); 1353 EXPECT_POISONED(buff[8]); 1354} 1355 1356TEST(MemorySanitizer, asprintf) { // NOLINT 1357 char *pbuf; 1358 EXPECT_POISONED(pbuf); 1359 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1360 assert(res == 7); 1361 EXPECT_NOT_POISONED(pbuf); 1362 assert(pbuf[0] == '1'); 1363 assert(pbuf[1] == '2'); 1364 assert(pbuf[2] == '3'); 1365 assert(pbuf[6] == '7'); 1366 assert(pbuf[7] == 0); 1367 free(pbuf); 1368} 1369 1370TEST(MemorySanitizer, mbstowcs) { 1371 const char *x = "abc"; 1372 wchar_t buff[10]; 1373 int res = mbstowcs(buff, x, 2); 1374 EXPECT_EQ(2, res); 1375 EXPECT_EQ(L'a', buff[0]); 1376 EXPECT_EQ(L'b', buff[1]); 1377 EXPECT_POISONED(buff[2]); 1378 res = mbstowcs(buff, x, 10); 1379 EXPECT_EQ(3, res); 1380 EXPECT_NOT_POISONED(buff[3]); 1381} 1382 1383TEST(MemorySanitizer, wcstombs) { 1384 const wchar_t *x = L"abc"; 1385 char buff[10]; 1386 int res = wcstombs(buff, x, 4); 1387 EXPECT_EQ(res, 3); 1388 EXPECT_EQ(buff[0], 'a'); 1389 EXPECT_EQ(buff[1], 'b'); 1390 EXPECT_EQ(buff[2], 'c'); 1391} 1392 1393TEST(MemorySanitizer, wcsrtombs) { 1394 const wchar_t *x = L"abc"; 1395 const wchar_t *p = x; 1396 char buff[10]; 1397 mbstate_t mbs; 1398 memset(&mbs, 0, sizeof(mbs)); 1399 int res = wcsrtombs(buff, &p, 4, &mbs); 1400 EXPECT_EQ(res, 3); 1401 EXPECT_EQ(buff[0], 'a'); 1402 EXPECT_EQ(buff[1], 'b'); 1403 EXPECT_EQ(buff[2], 'c'); 1404 EXPECT_EQ(buff[3], '\0'); 1405 EXPECT_POISONED(buff[4]); 1406} 1407 1408TEST(MemorySanitizer, wcsnrtombs) { 1409 const wchar_t *x = L"abc"; 1410 const wchar_t *p = x; 1411 char buff[10]; 1412 mbstate_t mbs; 1413 memset(&mbs, 0, sizeof(mbs)); 1414 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1415 EXPECT_EQ(res, 2); 1416 EXPECT_EQ(buff[0], 'a'); 1417 EXPECT_EQ(buff[1], 'b'); 1418 EXPECT_POISONED(buff[2]); 1419} 1420 1421TEST(MemorySanitizer, mbtowc) { 1422 const char *x = "abc"; 1423 wchar_t wx; 1424 int res = mbtowc(&wx, x, 3); 1425 EXPECT_GT(res, 0); 1426 EXPECT_NOT_POISONED(wx); 1427} 1428 1429TEST(MemorySanitizer, mbrtowc) { 1430 const char *x = "abc"; 1431 wchar_t wx; 1432 mbstate_t mbs; 1433 memset(&mbs, 0, sizeof(mbs)); 1434 int res = mbrtowc(&wx, x, 3, &mbs); 1435 EXPECT_GT(res, 0); 1436 EXPECT_NOT_POISONED(wx); 1437} 1438 1439TEST(MemorySanitizer, gettimeofday) { 1440 struct timeval tv; 1441 struct timezone tz; 1442 break_optimization(&tv); 1443 break_optimization(&tz); 1444 assert(sizeof(tv) == 16); 1445 assert(sizeof(tz) == 8); 1446 EXPECT_POISONED(tv.tv_sec); 1447 EXPECT_POISONED(tv.tv_usec); 1448 EXPECT_POISONED(tz.tz_minuteswest); 1449 EXPECT_POISONED(tz.tz_dsttime); 1450 assert(0 == gettimeofday(&tv, &tz)); 1451 EXPECT_NOT_POISONED(tv.tv_sec); 1452 EXPECT_NOT_POISONED(tv.tv_usec); 1453 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1454 EXPECT_NOT_POISONED(tz.tz_dsttime); 1455} 1456 1457TEST(MemorySanitizer, clock_gettime) { 1458 struct timespec tp; 1459 EXPECT_POISONED(tp.tv_sec); 1460 EXPECT_POISONED(tp.tv_nsec); 1461 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1462 EXPECT_NOT_POISONED(tp.tv_sec); 1463 EXPECT_NOT_POISONED(tp.tv_nsec); 1464} 1465 1466TEST(MemorySanitizer, clock_getres) { 1467 struct timespec tp; 1468 EXPECT_POISONED(tp.tv_sec); 1469 EXPECT_POISONED(tp.tv_nsec); 1470 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1471 EXPECT_POISONED(tp.tv_sec); 1472 EXPECT_POISONED(tp.tv_nsec); 1473 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1474 EXPECT_NOT_POISONED(tp.tv_sec); 1475 EXPECT_NOT_POISONED(tp.tv_nsec); 1476} 1477 1478TEST(MemorySanitizer, getitimer) { 1479 struct itimerval it1, it2; 1480 int res; 1481 EXPECT_POISONED(it1.it_interval.tv_sec); 1482 EXPECT_POISONED(it1.it_interval.tv_usec); 1483 EXPECT_POISONED(it1.it_value.tv_sec); 1484 EXPECT_POISONED(it1.it_value.tv_usec); 1485 res = getitimer(ITIMER_VIRTUAL, &it1); 1486 assert(!res); 1487 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1488 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1489 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1490 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1491 1492 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1493 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1494 1495 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1496 assert(!res); 1497 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1498 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1499 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1500 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1501 1502 // Check that old_value can be 0, and disable the timer. 1503 memset(&it1, 0, sizeof(it1)); 1504 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1505 assert(!res); 1506} 1507 1508TEST(MemorySanitizer, setitimer_null) { 1509 setitimer(ITIMER_VIRTUAL, 0, 0); 1510 // Not testing the return value, since it the behaviour seems to differ 1511 // between libc implementations and POSIX. 1512 // Should never crash, though. 1513} 1514 1515TEST(MemorySanitizer, time) { 1516 time_t t; 1517 EXPECT_POISONED(t); 1518 time_t t2 = time(&t); 1519 assert(t2 != (time_t)-1); 1520 EXPECT_NOT_POISONED(t); 1521} 1522 1523TEST(MemorySanitizer, localtime) { 1524 time_t t = 123; 1525 struct tm *time = localtime(&t); 1526 assert(time != 0); 1527 EXPECT_NOT_POISONED(time->tm_sec); 1528 EXPECT_NOT_POISONED(time->tm_hour); 1529 EXPECT_NOT_POISONED(time->tm_year); 1530 EXPECT_NOT_POISONED(time->tm_isdst); 1531 EXPECT_NE(0, strlen(time->tm_zone)); 1532} 1533 1534TEST(MemorySanitizer, localtime_r) { 1535 time_t t = 123; 1536 struct tm time; 1537 struct tm *res = localtime_r(&t, &time); 1538 assert(res != 0); 1539 EXPECT_NOT_POISONED(time.tm_sec); 1540 EXPECT_NOT_POISONED(time.tm_hour); 1541 EXPECT_NOT_POISONED(time.tm_year); 1542 EXPECT_NOT_POISONED(time.tm_isdst); 1543 EXPECT_NE(0, strlen(time.tm_zone)); 1544} 1545 1546TEST(MemorySanitizer, mmap) { 1547 const int size = 4096; 1548 void *p1, *p2; 1549 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1550 __msan_poison(p1, size); 1551 munmap(p1, size); 1552 for (int i = 0; i < 1000; i++) { 1553 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1554 if (p2 == p1) 1555 break; 1556 else 1557 munmap(p2, size); 1558 } 1559 if (p1 == p2) { 1560 EXPECT_NOT_POISONED(*(char*)p2); 1561 munmap(p2, size); 1562 } 1563} 1564 1565// FIXME: enable and add ecvt. 1566// FIXME: check why msandr does nt handle fcvt. 1567TEST(MemorySanitizer, fcvt) { 1568 int a, b; 1569 break_optimization(&a); 1570 break_optimization(&b); 1571 EXPECT_POISONED(a); 1572 EXPECT_POISONED(b); 1573 char *str = fcvt(12345.6789, 10, &a, &b); 1574 EXPECT_NOT_POISONED(a); 1575 EXPECT_NOT_POISONED(b); 1576} 1577 1578TEST(MemorySanitizer, frexp) { 1579 int x; 1580 x = *GetPoisoned<int>(); 1581 double r = frexp(1.1, &x); 1582 EXPECT_NOT_POISONED(r); 1583 EXPECT_NOT_POISONED(x); 1584 1585 x = *GetPoisoned<int>(); 1586 float rf = frexpf(1.1, &x); 1587 EXPECT_NOT_POISONED(rf); 1588 EXPECT_NOT_POISONED(x); 1589 1590 x = *GetPoisoned<int>(); 1591 double rl = frexpl(1.1, &x); 1592 EXPECT_NOT_POISONED(rl); 1593 EXPECT_NOT_POISONED(x); 1594} 1595 1596namespace { 1597 1598static int cnt; 1599 1600void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1601 assert(signo == SIGPROF); 1602 assert(si); 1603 EXPECT_NOT_POISONED(si->si_errno); 1604 EXPECT_NOT_POISONED(si->si_pid); 1605#if __linux__ 1606# if defined(__x86_64__) 1607 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1608# elif defined(__i386__) 1609 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1610# endif 1611#endif 1612 ++cnt; 1613} 1614 1615TEST(MemorySanitizer, sigaction) { 1616 struct sigaction act = {}; 1617 struct sigaction oldact = {}; 1618 struct sigaction origact = {}; 1619 1620 sigaction(SIGPROF, 0, &origact); 1621 1622 act.sa_flags |= SA_SIGINFO; 1623 act.sa_sigaction = &SigactionHandler; 1624 sigaction(SIGPROF, &act, 0); 1625 1626 kill(getpid(), SIGPROF); 1627 1628 act.sa_flags &= ~SA_SIGINFO; 1629 act.sa_handler = SIG_DFL; 1630 sigaction(SIGPROF, &act, 0); 1631 1632 act.sa_flags &= ~SA_SIGINFO; 1633 act.sa_handler = SIG_IGN; 1634 sigaction(SIGPROF, &act, &oldact); 1635 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1636 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1637 kill(getpid(), SIGPROF); 1638 1639 act.sa_flags |= SA_SIGINFO; 1640 act.sa_sigaction = &SigactionHandler; 1641 sigaction(SIGPROF, &act, &oldact); 1642 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1643 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1644 kill(getpid(), SIGPROF); 1645 1646 act.sa_flags &= ~SA_SIGINFO; 1647 act.sa_handler = SIG_DFL; 1648 sigaction(SIGPROF, &act, &oldact); 1649 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1650 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1651 EXPECT_EQ(2, cnt); 1652 1653 sigaction(SIGPROF, &origact, 0); 1654} 1655 1656} // namespace 1657 1658 1659TEST(MemorySanitizer, sigemptyset) { 1660 sigset_t s; 1661 EXPECT_POISONED(s); 1662 int res = sigemptyset(&s); 1663 ASSERT_EQ(0, res); 1664 EXPECT_NOT_POISONED(s); 1665} 1666 1667TEST(MemorySanitizer, sigfillset) { 1668 sigset_t s; 1669 EXPECT_POISONED(s); 1670 int res = sigfillset(&s); 1671 ASSERT_EQ(0, res); 1672 EXPECT_NOT_POISONED(s); 1673} 1674 1675TEST(MemorySanitizer, sigpending) { 1676 sigset_t s; 1677 EXPECT_POISONED(s); 1678 int res = sigpending(&s); 1679 ASSERT_EQ(0, res); 1680 EXPECT_NOT_POISONED(s); 1681} 1682 1683TEST(MemorySanitizer, sigprocmask) { 1684 sigset_t s; 1685 EXPECT_POISONED(s); 1686 int res = sigprocmask(SIG_BLOCK, 0, &s); 1687 ASSERT_EQ(0, res); 1688 EXPECT_NOT_POISONED(s); 1689} 1690 1691struct StructWithDtor { 1692 ~StructWithDtor(); 1693}; 1694 1695NOINLINE StructWithDtor::~StructWithDtor() { 1696 break_optimization(0); 1697} 1698 1699TEST(MemorySanitizer, Invoke) { 1700 StructWithDtor s; // Will cause the calls to become invokes. 1701 EXPECT_NOT_POISONED(0); 1702 EXPECT_POISONED(*GetPoisoned<int>()); 1703 EXPECT_NOT_POISONED(0); 1704 EXPECT_POISONED(*GetPoisoned<int>()); 1705 EXPECT_POISONED(ReturnPoisoned<S4>()); 1706} 1707 1708TEST(MemorySanitizer, ptrtoint) { 1709 // Test that shadow is propagated through pointer-to-integer conversion. 1710 void* p = (void*)0xABCD; 1711 __msan_poison(((char*)&p) + 1, sizeof(p)); 1712 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1713 1714 void* q = (void*)0xABCD; 1715 __msan_poison(&q, sizeof(q) - 1); 1716 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1717} 1718 1719static void vaargsfn2(int guard, ...) { 1720 va_list vl; 1721 va_start(vl, guard); 1722 EXPECT_NOT_POISONED(va_arg(vl, int)); 1723 EXPECT_NOT_POISONED(va_arg(vl, int)); 1724 EXPECT_NOT_POISONED(va_arg(vl, int)); 1725 EXPECT_POISONED(va_arg(vl, double)); 1726 va_end(vl); 1727} 1728 1729static void vaargsfn(int guard, ...) { 1730 va_list vl; 1731 va_start(vl, guard); 1732 EXPECT_NOT_POISONED(va_arg(vl, int)); 1733 EXPECT_POISONED(va_arg(vl, int)); 1734 // The following call will overwrite __msan_param_tls. 1735 // Checks after it test that arg shadow was somehow saved across the call. 1736 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1737 EXPECT_NOT_POISONED(va_arg(vl, int)); 1738 EXPECT_POISONED(va_arg(vl, int)); 1739 va_end(vl); 1740} 1741 1742TEST(MemorySanitizer, VAArgTest) { 1743 int* x = GetPoisoned<int>(); 1744 int* y = GetPoisoned<int>(4); 1745 vaargsfn(1, 13, *x, 42, *y); 1746} 1747 1748static void vaargsfn_many(int guard, ...) { 1749 va_list vl; 1750 va_start(vl, guard); 1751 EXPECT_NOT_POISONED(va_arg(vl, int)); 1752 EXPECT_POISONED(va_arg(vl, int)); 1753 EXPECT_NOT_POISONED(va_arg(vl, int)); 1754 EXPECT_NOT_POISONED(va_arg(vl, int)); 1755 EXPECT_NOT_POISONED(va_arg(vl, int)); 1756 EXPECT_NOT_POISONED(va_arg(vl, int)); 1757 EXPECT_NOT_POISONED(va_arg(vl, int)); 1758 EXPECT_NOT_POISONED(va_arg(vl, int)); 1759 EXPECT_NOT_POISONED(va_arg(vl, int)); 1760 EXPECT_POISONED(va_arg(vl, int)); 1761 va_end(vl); 1762} 1763 1764TEST(MemorySanitizer, VAArgManyTest) { 1765 int* x = GetPoisoned<int>(); 1766 int* y = GetPoisoned<int>(4); 1767 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1768} 1769 1770static void vaargsfn_pass2(va_list vl) { 1771 EXPECT_NOT_POISONED(va_arg(vl, int)); 1772 EXPECT_NOT_POISONED(va_arg(vl, int)); 1773 EXPECT_POISONED(va_arg(vl, int)); 1774} 1775 1776static void vaargsfn_pass(int guard, ...) { 1777 va_list vl; 1778 va_start(vl, guard); 1779 EXPECT_POISONED(va_arg(vl, int)); 1780 vaargsfn_pass2(vl); 1781 va_end(vl); 1782} 1783 1784TEST(MemorySanitizer, VAArgPass) { 1785 int* x = GetPoisoned<int>(); 1786 int* y = GetPoisoned<int>(4); 1787 vaargsfn_pass(1, *x, 2, 3, *y); 1788} 1789 1790static void vaargsfn_copy2(va_list vl) { 1791 EXPECT_NOT_POISONED(va_arg(vl, int)); 1792 EXPECT_POISONED(va_arg(vl, int)); 1793} 1794 1795static void vaargsfn_copy(int guard, ...) { 1796 va_list vl; 1797 va_start(vl, guard); 1798 EXPECT_NOT_POISONED(va_arg(vl, int)); 1799 EXPECT_POISONED(va_arg(vl, int)); 1800 va_list vl2; 1801 va_copy(vl2, vl); 1802 vaargsfn_copy2(vl2); 1803 EXPECT_NOT_POISONED(va_arg(vl, int)); 1804 EXPECT_POISONED(va_arg(vl, int)); 1805 va_end(vl); 1806} 1807 1808TEST(MemorySanitizer, VAArgCopy) { 1809 int* x = GetPoisoned<int>(); 1810 int* y = GetPoisoned<int>(4); 1811 vaargsfn_copy(1, 2, *x, 3, *y); 1812} 1813 1814static void vaargsfn_ptr(int guard, ...) { 1815 va_list vl; 1816 va_start(vl, guard); 1817 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1818 EXPECT_POISONED(va_arg(vl, int*)); 1819 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1820 EXPECT_POISONED(va_arg(vl, double*)); 1821 va_end(vl); 1822} 1823 1824TEST(MemorySanitizer, VAArgPtr) { 1825 int** x = GetPoisoned<int*>(); 1826 double** y = GetPoisoned<double*>(8); 1827 int z; 1828 vaargsfn_ptr(1, &z, *x, &z, *y); 1829} 1830 1831static void vaargsfn_overflow(int guard, ...) { 1832 va_list vl; 1833 va_start(vl, guard); 1834 EXPECT_NOT_POISONED(va_arg(vl, int)); 1835 EXPECT_NOT_POISONED(va_arg(vl, int)); 1836 EXPECT_POISONED(va_arg(vl, int)); 1837 EXPECT_NOT_POISONED(va_arg(vl, int)); 1838 EXPECT_NOT_POISONED(va_arg(vl, int)); 1839 EXPECT_NOT_POISONED(va_arg(vl, int)); 1840 1841 EXPECT_NOT_POISONED(va_arg(vl, double)); 1842 EXPECT_NOT_POISONED(va_arg(vl, double)); 1843 EXPECT_NOT_POISONED(va_arg(vl, double)); 1844 EXPECT_POISONED(va_arg(vl, double)); 1845 EXPECT_NOT_POISONED(va_arg(vl, double)); 1846 EXPECT_POISONED(va_arg(vl, int*)); 1847 EXPECT_NOT_POISONED(va_arg(vl, double)); 1848 EXPECT_NOT_POISONED(va_arg(vl, double)); 1849 1850 EXPECT_POISONED(va_arg(vl, int)); 1851 EXPECT_POISONED(va_arg(vl, double)); 1852 EXPECT_POISONED(va_arg(vl, int*)); 1853 1854 EXPECT_NOT_POISONED(va_arg(vl, int)); 1855 EXPECT_NOT_POISONED(va_arg(vl, double)); 1856 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1857 1858 EXPECT_POISONED(va_arg(vl, int)); 1859 EXPECT_POISONED(va_arg(vl, double)); 1860 EXPECT_POISONED(va_arg(vl, int*)); 1861 1862 va_end(vl); 1863} 1864 1865TEST(MemorySanitizer, VAArgOverflow) { 1866 int* x = GetPoisoned<int>(); 1867 double* y = GetPoisoned<double>(8); 1868 int** p = GetPoisoned<int*>(16); 1869 int z; 1870 vaargsfn_overflow(1, 1871 1, 2, *x, 4, 5, 6, 1872 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1873 // the following args will overflow for sure 1874 *x, *y, *p, 1875 7, 9.9, &z, 1876 *x, *y, *p); 1877} 1878 1879static void vaargsfn_tlsoverwrite2(int guard, ...) { 1880 va_list vl; 1881 va_start(vl, guard); 1882 for (int i = 0; i < 20; ++i) 1883 EXPECT_NOT_POISONED(va_arg(vl, int)); 1884 va_end(vl); 1885} 1886 1887static void vaargsfn_tlsoverwrite(int guard, ...) { 1888 // This call will overwrite TLS contents unless it's backed up somewhere. 1889 vaargsfn_tlsoverwrite2(2, 1890 42, 42, 42, 42, 42, 1891 42, 42, 42, 42, 42, 1892 42, 42, 42, 42, 42, 1893 42, 42, 42, 42, 42); // 20x 1894 va_list vl; 1895 va_start(vl, guard); 1896 for (int i = 0; i < 20; ++i) 1897 EXPECT_POISONED(va_arg(vl, int)); 1898 va_end(vl); 1899} 1900 1901TEST(MemorySanitizer, VAArgTLSOverwrite) { 1902 int* x = GetPoisoned<int>(); 1903 vaargsfn_tlsoverwrite(1, 1904 *x, *x, *x, *x, *x, 1905 *x, *x, *x, *x, *x, 1906 *x, *x, *x, *x, *x, 1907 *x, *x, *x, *x, *x); // 20x 1908 1909} 1910 1911struct StructByVal { 1912 int a, b, c, d, e, f; 1913}; 1914 1915NOINLINE void StructByValTestFunc(struct StructByVal s) { 1916 EXPECT_NOT_POISONED(s.a); 1917 EXPECT_POISONED(s.b); 1918 EXPECT_NOT_POISONED(s.c); 1919 EXPECT_POISONED(s.d); 1920 EXPECT_NOT_POISONED(s.e); 1921 EXPECT_POISONED(s.f); 1922} 1923 1924NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1925 StructByValTestFunc(s); 1926} 1927 1928NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1929 StructByValTestFunc(s); 1930} 1931 1932TEST(MemorySanitizer, StructByVal) { 1933 // Large aggregates are passed as "byval" pointer argument in LLVM. 1934 struct StructByVal s; 1935 s.a = 1; 1936 s.b = *GetPoisoned<int>(); 1937 s.c = 2; 1938 s.d = *GetPoisoned<int>(); 1939 s.e = 3; 1940 s.f = *GetPoisoned<int>(); 1941 StructByValTestFunc(s); 1942 StructByValTestFunc1(s); 1943 StructByValTestFunc2(0, s); 1944} 1945 1946 1947#if MSAN_HAS_M128 1948NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1949NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1950TEST(MemorySanitizer, m128) { 1951 __m128i a = _mm_set1_epi16(0x1234); 1952 __m128i b = _mm_set1_epi16(0x7890); 1953 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1954 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1955} 1956// FIXME: add more tests for __m128i. 1957#endif // MSAN_HAS_M128 1958 1959// We should not complain when copying this poisoned hole. 1960struct StructWithHole { 1961 U4 a; 1962 // 4-byte hole. 1963 U8 b; 1964}; 1965 1966NOINLINE StructWithHole ReturnStructWithHole() { 1967 StructWithHole res; 1968 __msan_poison(&res, sizeof(res)); 1969 res.a = 1; 1970 res.b = 2; 1971 return res; 1972} 1973 1974TEST(MemorySanitizer, StructWithHole) { 1975 StructWithHole a = ReturnStructWithHole(); 1976 break_optimization(&a); 1977} 1978 1979template <class T> 1980NOINLINE T ReturnStruct() { 1981 T res; 1982 __msan_poison(&res, sizeof(res)); 1983 res.a = 1; 1984 return res; 1985} 1986 1987template <class T> 1988NOINLINE void TestReturnStruct() { 1989 T s1 = ReturnStruct<T>(); 1990 EXPECT_NOT_POISONED(s1.a); 1991 EXPECT_POISONED(s1.b); 1992} 1993 1994struct SSS1 { 1995 int a, b, c; 1996}; 1997struct SSS2 { 1998 int b, a, c; 1999}; 2000struct SSS3 { 2001 int b, c, a; 2002}; 2003struct SSS4 { 2004 int c, b, a; 2005}; 2006 2007struct SSS5 { 2008 int a; 2009 float b; 2010}; 2011struct SSS6 { 2012 int a; 2013 double b; 2014}; 2015struct SSS7 { 2016 S8 b; 2017 int a; 2018}; 2019struct SSS8 { 2020 S2 b; 2021 S8 a; 2022}; 2023 2024TEST(MemorySanitizer, IntStruct3) { 2025 TestReturnStruct<SSS1>(); 2026 TestReturnStruct<SSS2>(); 2027 TestReturnStruct<SSS3>(); 2028 TestReturnStruct<SSS4>(); 2029 TestReturnStruct<SSS5>(); 2030 TestReturnStruct<SSS6>(); 2031 TestReturnStruct<SSS7>(); 2032 TestReturnStruct<SSS8>(); 2033} 2034 2035struct LongStruct { 2036 U1 a1, b1; 2037 U2 a2, b2; 2038 U4 a4, b4; 2039 U8 a8, b8; 2040}; 2041 2042NOINLINE LongStruct ReturnLongStruct1() { 2043 LongStruct res; 2044 __msan_poison(&res, sizeof(res)); 2045 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2046 // leaves b1, .., b8 poisoned. 2047 return res; 2048} 2049 2050NOINLINE LongStruct ReturnLongStruct2() { 2051 LongStruct res; 2052 __msan_poison(&res, sizeof(res)); 2053 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2054 // leaves a1, .., a8 poisoned. 2055 return res; 2056} 2057 2058TEST(MemorySanitizer, LongStruct) { 2059 LongStruct s1 = ReturnLongStruct1(); 2060 __msan_print_shadow(&s1, sizeof(s1)); 2061 EXPECT_NOT_POISONED(s1.a1); 2062 EXPECT_NOT_POISONED(s1.a2); 2063 EXPECT_NOT_POISONED(s1.a4); 2064 EXPECT_NOT_POISONED(s1.a8); 2065 2066 EXPECT_POISONED(s1.b1); 2067 EXPECT_POISONED(s1.b2); 2068 EXPECT_POISONED(s1.b4); 2069 EXPECT_POISONED(s1.b8); 2070 2071 LongStruct s2 = ReturnLongStruct2(); 2072 __msan_print_shadow(&s2, sizeof(s2)); 2073 EXPECT_NOT_POISONED(s2.b1); 2074 EXPECT_NOT_POISONED(s2.b2); 2075 EXPECT_NOT_POISONED(s2.b4); 2076 EXPECT_NOT_POISONED(s2.b8); 2077 2078 EXPECT_POISONED(s2.a1); 2079 EXPECT_POISONED(s2.a2); 2080 EXPECT_POISONED(s2.a4); 2081 EXPECT_POISONED(s2.a8); 2082} 2083 2084TEST(MemorySanitizer, getrlimit) { 2085 struct rlimit limit; 2086 __msan_poison(&limit, sizeof(limit)); 2087 int result = getrlimit(RLIMIT_DATA, &limit); 2088 assert(result == 0); 2089 EXPECT_NOT_POISONED(limit.rlim_cur); 2090 EXPECT_NOT_POISONED(limit.rlim_max); 2091} 2092 2093TEST(MemorySanitizer, getrusage) { 2094 struct rusage usage; 2095 __msan_poison(&usage, sizeof(usage)); 2096 int result = getrusage(RUSAGE_SELF, &usage); 2097 assert(result == 0); 2098 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2099 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2100 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2101 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2102 EXPECT_NOT_POISONED(usage.ru_maxrss); 2103 EXPECT_NOT_POISONED(usage.ru_minflt); 2104 EXPECT_NOT_POISONED(usage.ru_majflt); 2105 EXPECT_NOT_POISONED(usage.ru_inblock); 2106 EXPECT_NOT_POISONED(usage.ru_oublock); 2107 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2108 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2109} 2110 2111#ifdef __GLIBC__ 2112extern char *program_invocation_name; 2113#else // __GLIBC__ 2114# error "TODO: port this" 2115#endif 2116 2117static void dladdr_testfn() {} 2118 2119TEST(MemorySanitizer, dladdr) { 2120 Dl_info info; 2121 __msan_poison(&info, sizeof(info)); 2122 int result = dladdr((const void*)dladdr_testfn, &info); 2123 assert(result != 0); 2124 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2125 if (info.dli_fname) 2126 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2127 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2128 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2129 if (info.dli_sname) 2130 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2131 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2132} 2133 2134#ifndef MSAN_TEST_DISABLE_DLOPEN 2135 2136static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2137 (*(int *)data)++; 2138 EXPECT_NOT_POISONED(info->dlpi_addr); 2139 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2140 EXPECT_NOT_POISONED(info->dlpi_phnum); 2141 for (int i = 0; i < info->dlpi_phnum; ++i) 2142 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2143 return 0; 2144} 2145 2146// Compute the path to our loadable DSO. We assume it's in the same 2147// directory. Only use string routines that we intercept so far to do this. 2148static int PathToLoadable(char *buf, size_t sz) { 2149 const char *basename = "libmsan_loadable.x86_64.so"; 2150 char *argv0 = program_invocation_name; 2151 char *last_slash = strrchr(argv0, '/'); 2152 assert(last_slash); 2153 int res = 2154 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2155 return res < sz ? 0 : res; 2156} 2157 2158TEST(MemorySanitizer, dl_iterate_phdr) { 2159 char path[4096]; 2160 int res = PathToLoadable(path, sizeof(path)); 2161 assert(!res); 2162 2163 // Having at least one dlopen'ed library in the process makes this more 2164 // entertaining. 2165 void *lib = dlopen(path, RTLD_LAZY); 2166 ASSERT_NE((void*)0, lib); 2167 2168 int count = 0; 2169 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2170 assert(count > 0); 2171 2172 dlclose(lib); 2173} 2174 2175 2176TEST(MemorySanitizer, dlopen) { 2177 char path[4096]; 2178 int res = PathToLoadable(path, sizeof(path)); 2179 assert(!res); 2180 2181 // We need to clear shadow for globals when doing dlopen. In order to test 2182 // this, we have to poison the shadow for the DSO before we load it. In 2183 // general this is difficult, but the loader tends to reload things in the 2184 // same place, so we open, close, and then reopen. The global should always 2185 // start out clean after dlopen. 2186 for (int i = 0; i < 2; i++) { 2187 void *lib = dlopen(path, RTLD_LAZY); 2188 if (lib == NULL) { 2189 printf("dlerror: %s\n", dlerror()); 2190 assert(lib != NULL); 2191 } 2192 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2193 assert(get_dso_global); 2194 void **dso_global = get_dso_global(); 2195 EXPECT_NOT_POISONED(*dso_global); 2196 __msan_poison(dso_global, sizeof(*dso_global)); 2197 EXPECT_POISONED(*dso_global); 2198 dlclose(lib); 2199 } 2200} 2201 2202// Regression test for a crash in dlopen() interceptor. 2203TEST(MemorySanitizer, dlopenFailed) { 2204 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2205 void *lib = dlopen(path, RTLD_LAZY); 2206 ASSERT_EQ(0, lib); 2207} 2208 2209#endif // MSAN_TEST_DISABLE_DLOPEN 2210 2211TEST(MemorySanitizer, sched_getaffinity) { 2212 cpu_set_t mask; 2213 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2214 ASSERT_EQ(0, res); 2215 EXPECT_NOT_POISONED(mask); 2216} 2217 2218TEST(MemorySanitizer, scanf) { 2219 const char *input = "42 hello"; 2220 int* d = new int; 2221 char* s = new char[7]; 2222 int res = sscanf(input, "%d %5s", d, s); 2223 printf("res %d\n", res); 2224 assert(res == 2); 2225 EXPECT_NOT_POISONED(*d); 2226 EXPECT_NOT_POISONED(s[0]); 2227 EXPECT_NOT_POISONED(s[1]); 2228 EXPECT_NOT_POISONED(s[2]); 2229 EXPECT_NOT_POISONED(s[3]); 2230 EXPECT_NOT_POISONED(s[4]); 2231 EXPECT_NOT_POISONED(s[5]); 2232 EXPECT_POISONED(s[6]); 2233 delete s; 2234 delete d; 2235} 2236 2237static void *SimpleThread_threadfn(void* data) { 2238 return new int; 2239} 2240 2241TEST(MemorySanitizer, SimpleThread) { 2242 pthread_t t; 2243 void *p; 2244 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2245 assert(!res); 2246 EXPECT_NOT_POISONED(t); 2247 res = pthread_join(t, &p); 2248 assert(!res); 2249 EXPECT_NOT_POISONED(p); 2250 delete (int*)p; 2251} 2252 2253static void *SmallStackThread_threadfn(void* data) { 2254 return 0; 2255} 2256 2257TEST(MemorySanitizer, SmallStackThread) { 2258 pthread_attr_t attr; 2259 pthread_t t; 2260 void *p; 2261 int res; 2262 res = pthread_attr_init(&attr); 2263 ASSERT_EQ(0, res); 2264 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2265 ASSERT_EQ(0, res); 2266 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2267 ASSERT_EQ(0, res); 2268 res = pthread_join(t, &p); 2269 ASSERT_EQ(0, res); 2270 res = pthread_attr_destroy(&attr); 2271 ASSERT_EQ(0, res); 2272} 2273 2274TEST(MemorySanitizer, PreAllocatedStackThread) { 2275 pthread_attr_t attr; 2276 pthread_t t; 2277 int res; 2278 res = pthread_attr_init(&attr); 2279 ASSERT_EQ(0, res); 2280 void *stack; 2281 const size_t kStackSize = 64 * 1024; 2282 res = posix_memalign(&stack, 4096, kStackSize); 2283 ASSERT_EQ(0, res); 2284 res = pthread_attr_setstack(&attr, stack, kStackSize); 2285 ASSERT_EQ(0, res); 2286 // A small self-allocated stack can not be extended by the tool. 2287 // In this case pthread_create is expected to fail. 2288 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2289 EXPECT_NE(0, res); 2290 res = pthread_attr_destroy(&attr); 2291 ASSERT_EQ(0, res); 2292} 2293 2294TEST(MemorySanitizer, pthread_getschedparam) { 2295 int policy; 2296 struct sched_param param; 2297 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2298 ASSERT_EQ(0, res); 2299 EXPECT_NOT_POISONED(policy); 2300 EXPECT_NOT_POISONED(param.sched_priority); 2301} 2302 2303TEST(MemorySanitizer, pthread_key_create) { 2304 pthread_key_t key; 2305 int res = pthread_key_create(&key, NULL); 2306 assert(!res); 2307 EXPECT_NOT_POISONED(key); 2308 res = pthread_key_delete(key); 2309 assert(!res); 2310} 2311 2312namespace { 2313struct SignalCondArg { 2314 pthread_cond_t* cond; 2315 pthread_mutex_t* mu; 2316 bool broadcast; 2317}; 2318 2319void *SignalCond(void *param) { 2320 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2321 pthread_mutex_lock(arg->mu); 2322 if (arg->broadcast) 2323 pthread_cond_broadcast(arg->cond); 2324 else 2325 pthread_cond_signal(arg->cond); 2326 pthread_mutex_unlock(arg->mu); 2327 return 0; 2328} 2329} // namespace 2330 2331TEST(MemorySanitizer, pthread_cond_wait) { 2332 pthread_cond_t cond; 2333 pthread_mutex_t mu; 2334 SignalCondArg args = {&cond, &mu, false}; 2335 pthread_cond_init(&cond, 0); 2336 pthread_mutex_init(&mu, 0); 2337 pthread_mutex_lock(&mu); 2338 2339 // signal 2340 pthread_t thr; 2341 pthread_create(&thr, 0, SignalCond, &args); 2342 int res = pthread_cond_wait(&cond, &mu); 2343 assert(!res); 2344 pthread_join(thr, 0); 2345 2346 // broadcast 2347 args.broadcast = true; 2348 pthread_create(&thr, 0, SignalCond, &args); 2349 res = pthread_cond_wait(&cond, &mu); 2350 assert(!res); 2351 pthread_join(thr, 0); 2352 2353 pthread_mutex_unlock(&mu); 2354 pthread_mutex_destroy(&mu); 2355 pthread_cond_destroy(&cond); 2356} 2357 2358TEST(MemorySanitizer, posix_memalign) { 2359 void *p; 2360 EXPECT_POISONED(p); 2361 int res = posix_memalign(&p, 4096, 13); 2362 ASSERT_EQ(0, res); 2363 EXPECT_NOT_POISONED(p); 2364 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2365 free(p); 2366} 2367 2368TEST(MemorySanitizer, memalign) { 2369 void *p = memalign(4096, 13); 2370 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2371 free(p); 2372} 2373 2374TEST(MemorySanitizer, valloc) { 2375 void *a = valloc(100); 2376 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2377 free(a); 2378} 2379 2380TEST(MemorySanitizer, pvalloc) { 2381 void *p = pvalloc(kPageSize + 100); 2382 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2383 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2384 free(p); 2385 2386 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2387 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2388 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2389 free(p); 2390} 2391 2392TEST(MemorySanitizer, inet_pton) { 2393 const char *s = "1:0:0:0:0:0:0:8"; 2394 unsigned char buf[sizeof(struct in6_addr)]; 2395 int res = inet_pton(AF_INET6, s, buf); 2396 ASSERT_EQ(1, res); 2397 EXPECT_NOT_POISONED(buf[0]); 2398 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2399 2400 char s_out[INET6_ADDRSTRLEN]; 2401 EXPECT_POISONED(s_out[3]); 2402 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2403 ASSERT_NE((void*)0, q); 2404 EXPECT_NOT_POISONED(s_out[3]); 2405} 2406 2407TEST(MemorySanitizer, inet_aton) { 2408 const char *s = "127.0.0.1"; 2409 struct in_addr in[2]; 2410 int res = inet_aton(s, in); 2411 ASSERT_NE(0, res); 2412 EXPECT_NOT_POISONED(in[0]); 2413 EXPECT_POISONED(*(char *)(in + 1)); 2414} 2415 2416TEST(MemorySanitizer, uname) { 2417 struct utsname u; 2418 int res = uname(&u); 2419 assert(!res); 2420 EXPECT_NOT_POISONED(strlen(u.sysname)); 2421 EXPECT_NOT_POISONED(strlen(u.nodename)); 2422 EXPECT_NOT_POISONED(strlen(u.release)); 2423 EXPECT_NOT_POISONED(strlen(u.version)); 2424 EXPECT_NOT_POISONED(strlen(u.machine)); 2425} 2426 2427TEST(MemorySanitizer, gethostname) { 2428 char buf[100]; 2429 int res = gethostname(buf, 100); 2430 assert(!res); 2431 EXPECT_NOT_POISONED(strlen(buf)); 2432} 2433 2434TEST(MemorySanitizer, sysinfo) { 2435 struct sysinfo info; 2436 int res = sysinfo(&info); 2437 assert(!res); 2438 EXPECT_NOT_POISONED(info); 2439} 2440 2441TEST(MemorySanitizer, getpwuid) { 2442 struct passwd *p = getpwuid(0); // root 2443 assert(p); 2444 EXPECT_NOT_POISONED(p->pw_name); 2445 assert(p->pw_name); 2446 EXPECT_NOT_POISONED(p->pw_name[0]); 2447 EXPECT_NOT_POISONED(p->pw_uid); 2448 assert(p->pw_uid == 0); 2449} 2450 2451TEST(MemorySanitizer, getpwnam_r) { 2452 struct passwd pwd; 2453 struct passwd *pwdres; 2454 char buf[10000]; 2455 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2456 assert(!res); 2457 EXPECT_NOT_POISONED(pwd.pw_name); 2458 assert(pwd.pw_name); 2459 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2460 EXPECT_NOT_POISONED(pwd.pw_uid); 2461 assert(pwd.pw_uid == 0); 2462} 2463 2464TEST(MemorySanitizer, getpwnam_r_positive) { 2465 struct passwd pwd; 2466 struct passwd *pwdres; 2467 char s[5]; 2468 strncpy(s, "abcd", 5); 2469 __msan_poison(s, 5); 2470 char buf[10000]; 2471 int res; 2472 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2473} 2474 2475TEST(MemorySanitizer, getgrnam_r) { 2476 struct group grp; 2477 struct group *grpres; 2478 char buf[10000]; 2479 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2480 assert(!res); 2481 EXPECT_NOT_POISONED(grp.gr_name); 2482 assert(grp.gr_name); 2483 EXPECT_NOT_POISONED(grp.gr_name[0]); 2484 EXPECT_NOT_POISONED(grp.gr_gid); 2485} 2486 2487TEST(MemorySanitizer, getgroups) { 2488 int n = getgroups(0, 0); 2489 gid_t *gids = new gid_t[n]; 2490 int res = getgroups(n, gids); 2491 ASSERT_EQ(n, res); 2492 for (int i = 0; i < n; ++i) 2493 EXPECT_NOT_POISONED(gids[i]); 2494} 2495 2496TEST(MemorySanitizer, wordexp) { 2497 wordexp_t w; 2498 int res = wordexp("a b c", &w, 0); 2499 ASSERT_EQ(0, res); 2500 ASSERT_EQ(3, w.we_wordc); 2501 ASSERT_STREQ("a", w.we_wordv[0]); 2502 ASSERT_STREQ("b", w.we_wordv[1]); 2503 ASSERT_STREQ("c", w.we_wordv[2]); 2504} 2505 2506template<class T> 2507static bool applySlt(T value, T shadow) { 2508 __msan_partial_poison(&value, &shadow, sizeof(T)); 2509 volatile bool zzz = true; 2510 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2511 // a shift-and-trunc to get at the highest bit. 2512 volatile bool v = value < 0 || zzz; 2513 return v; 2514} 2515 2516TEST(MemorySanitizer, SignedCompareWithZero) { 2517 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2518 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2519 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2520 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2521 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2522 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2523} 2524 2525template <class T, class S> 2526static T poisoned(T Va, S Sa) { 2527 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2528 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2529 T a; 2530 a = Va; 2531 __msan_partial_poison(&a, &Sa, sizeof(T)); 2532 return a; 2533} 2534 2535TEST(MemorySanitizer, ICmpRelational) { 2536 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2537 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2538 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2539 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2540 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2541 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2542 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2543 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2544 poisoned(-1, 0xFFFFFFFFU)); 2545 2546 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2547 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2548 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2549 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2550 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2551 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2552 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2553 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2554 poisoned(-1, 0xFFFFFFFFU)); 2555 2556 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2557 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2558 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2559 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2560 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2561 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2562 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2563 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2564 poisoned(-1, 0xFFFFFFFFU)); 2565 2566 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2567 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2568 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2569 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2570 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2571 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2572 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2573 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2574 poisoned(-1, 0xFFFFFFFFU)); 2575 2576 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2577 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2578 2579 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2580} 2581 2582#if MSAN_HAS_M128 2583TEST(MemorySanitizer, ICmpVectorRelational) { 2584 EXPECT_NOT_POISONED( 2585 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2586 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2587 EXPECT_NOT_POISONED( 2588 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2589 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2590 EXPECT_POISONED( 2591 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2592 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2593 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2594 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2595} 2596#endif 2597 2598// Volatile bitfield store is implemented as load-mask-store 2599// Test that we don't warn on the store of (uninitialized) padding. 2600struct VolatileBitfieldStruct { 2601 volatile unsigned x : 1; 2602 unsigned y : 1; 2603}; 2604 2605TEST(MemorySanitizer, VolatileBitfield) { 2606 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2607 S->x = 1; 2608 EXPECT_NOT_POISONED((unsigned)S->x); 2609 EXPECT_POISONED((unsigned)S->y); 2610} 2611 2612TEST(MemorySanitizer, UnalignedLoad) { 2613 char x[32]; 2614 memset(x + 8, 0, 16); 2615 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2616 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2617 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2618 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2619 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2620 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2621 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2622 2623 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2624 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2625 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2626 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2627 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2628 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2629 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2630 2631 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2632 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2633 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2634 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2635 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2636 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2637 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2638 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2639 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2640} 2641 2642TEST(MemorySanitizer, UnalignedStore16) { 2643 char x[5]; 2644 U2 y = 0; 2645 __msan_poison(&y, 1); 2646 __sanitizer_unaligned_store16(x + 1, y); 2647 EXPECT_POISONED(x[0]); 2648 EXPECT_POISONED(x[1]); 2649 EXPECT_NOT_POISONED(x[2]); 2650 EXPECT_POISONED(x[3]); 2651 EXPECT_POISONED(x[4]); 2652} 2653 2654TEST(MemorySanitizer, UnalignedStore32) { 2655 char x[8]; 2656 U4 y4 = 0; 2657 __msan_poison(&y4, 2); 2658 __sanitizer_unaligned_store32(x+3, y4); 2659 EXPECT_POISONED(x[0]); 2660 EXPECT_POISONED(x[1]); 2661 EXPECT_POISONED(x[2]); 2662 EXPECT_POISONED(x[3]); 2663 EXPECT_POISONED(x[4]); 2664 EXPECT_NOT_POISONED(x[5]); 2665 EXPECT_NOT_POISONED(x[6]); 2666 EXPECT_POISONED(x[7]); 2667} 2668 2669TEST(MemorySanitizer, UnalignedStore64) { 2670 char x[16]; 2671 U8 y = 0; 2672 __msan_poison(&y, 3); 2673 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2674 __sanitizer_unaligned_store64(x+3, y); 2675 EXPECT_POISONED(x[0]); 2676 EXPECT_POISONED(x[1]); 2677 EXPECT_POISONED(x[2]); 2678 EXPECT_POISONED(x[3]); 2679 EXPECT_POISONED(x[4]); 2680 EXPECT_POISONED(x[5]); 2681 EXPECT_NOT_POISONED(x[6]); 2682 EXPECT_NOT_POISONED(x[7]); 2683 EXPECT_NOT_POISONED(x[8]); 2684 EXPECT_POISONED(x[9]); 2685 EXPECT_NOT_POISONED(x[10]); 2686 EXPECT_POISONED(x[11]); 2687} 2688 2689TEST(MemorySanitizerDr, StoreInDSOTest) { 2690 if (!__msan_has_dynamic_component()) return; 2691 char* s = new char[10]; 2692 dso_memfill(s, 9); 2693 EXPECT_NOT_POISONED(s[5]); 2694 EXPECT_POISONED(s[9]); 2695} 2696 2697int return_poisoned_int() { 2698 return ReturnPoisoned<U8>(); 2699} 2700 2701TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2702 if (!__msan_has_dynamic_component()) return; 2703 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2704} 2705 2706NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2707 EXPECT_POISONED(x); 2708 EXPECT_POISONED(y); 2709 EXPECT_POISONED(z); 2710 return 0; 2711} 2712 2713static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2714 EXPECT_NOT_POISONED(x); 2715 EXPECT_NOT_POISONED(y); 2716 EXPECT_NOT_POISONED(z); 2717 return 0; 2718} 2719 2720TEST(MemorySanitizerDr, CallFromDSOTest) { 2721 if (!__msan_has_dynamic_component()) return; 2722 S8* x = GetPoisoned<S8>(); 2723 S8* y = GetPoisoned<S8>(); 2724 S8* z = GetPoisoned<S8>(); 2725 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2726 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2727} 2728 2729static void StackStoreInDSOFn(int* x, int* y) { 2730 EXPECT_NOT_POISONED(*x); 2731 EXPECT_NOT_POISONED(*y); 2732} 2733 2734TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2735 if (!__msan_has_dynamic_component()) return; 2736 dso_stack_store(StackStoreInDSOFn, 1); 2737} 2738 2739TEST(MemorySanitizerOrigins, SetGet) { 2740 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2741 if (!TrackingOrigins()) return; 2742 int x; 2743 __msan_set_origin(&x, sizeof(x), 1234); 2744 EXPECT_EQ(1234, __msan_get_origin(&x)); 2745 __msan_set_origin(&x, sizeof(x), 5678); 2746 EXPECT_EQ(5678, __msan_get_origin(&x)); 2747 __msan_set_origin(&x, sizeof(x), 0); 2748 EXPECT_EQ(0, __msan_get_origin(&x)); 2749} 2750 2751namespace { 2752struct S { 2753 U4 dummy; 2754 U2 a; 2755 U2 b; 2756}; 2757 2758// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2759TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2760 if (!TrackingOrigins()) return; 2761 2762 S s; 2763 U4 origin = rand(); // NOLINT 2764 s.a = *GetPoisonedO<U2>(0, origin); 2765 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2766 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2767 2768 s.b = 42; 2769 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2770 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2771} 2772} // namespace 2773 2774template<class T, class BinaryOp> 2775INLINE 2776void BinaryOpOriginTest(BinaryOp op) { 2777 U4 ox = rand(); //NOLINT 2778 U4 oy = rand(); //NOLINT 2779 T *x = GetPoisonedO<T>(0, ox, 0); 2780 T *y = GetPoisonedO<T>(1, oy, 0); 2781 T *z = GetPoisonedO<T>(2, 0, 0); 2782 2783 *z = op(*x, *y); 2784 U4 origin = __msan_get_origin(z); 2785 EXPECT_POISONED_O(*z, origin); 2786 EXPECT_EQ(true, origin == ox || origin == oy); 2787 2788 // y is poisoned, x is not. 2789 *x = 10101; 2790 *y = *GetPoisonedO<T>(1, oy); 2791 break_optimization(x); 2792 __msan_set_origin(z, sizeof(*z), 0); 2793 *z = op(*x, *y); 2794 EXPECT_POISONED_O(*z, oy); 2795 EXPECT_EQ(__msan_get_origin(z), oy); 2796 2797 // x is poisoned, y is not. 2798 *x = *GetPoisonedO<T>(0, ox); 2799 *y = 10101010; 2800 break_optimization(y); 2801 __msan_set_origin(z, sizeof(*z), 0); 2802 *z = op(*x, *y); 2803 EXPECT_POISONED_O(*z, ox); 2804 EXPECT_EQ(__msan_get_origin(z), ox); 2805} 2806 2807template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2808template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2809template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2810template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2811template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2812template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2813 2814TEST(MemorySanitizerOrigins, BinaryOp) { 2815 if (!TrackingOrigins()) return; 2816 BinaryOpOriginTest<S8>(XOR<S8>); 2817 BinaryOpOriginTest<U8>(ADD<U8>); 2818 BinaryOpOriginTest<S4>(SUB<S4>); 2819 BinaryOpOriginTest<S4>(MUL<S4>); 2820 BinaryOpOriginTest<U4>(OR<U4>); 2821 BinaryOpOriginTest<U4>(AND<U4>); 2822 BinaryOpOriginTest<double>(ADD<U4>); 2823 BinaryOpOriginTest<float>(ADD<S4>); 2824 BinaryOpOriginTest<double>(ADD<double>); 2825 BinaryOpOriginTest<float>(ADD<double>); 2826} 2827 2828TEST(MemorySanitizerOrigins, Unary) { 2829 if (!TrackingOrigins()) return; 2830 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2831 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2832 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2833 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2834 2835 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2836 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2837 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2838 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2839 2840 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2841 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2842 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2843 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2844 2845 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2846 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2847 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2848 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2849 2850 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2851 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2852} 2853 2854TEST(MemorySanitizerOrigins, EQ) { 2855 if (!TrackingOrigins()) return; 2856 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2857 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2858 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2859} 2860 2861TEST(MemorySanitizerOrigins, DIV) { 2862 if (!TrackingOrigins()) return; 2863 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2864 unsigned o = __LINE__; 2865 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2866} 2867 2868TEST(MemorySanitizerOrigins, SHIFT) { 2869 if (!TrackingOrigins()) return; 2870 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2871 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2872 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2873 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2874 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2875 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2876} 2877 2878template<class T, int N> 2879void MemCpyTest() { 2880 int ox = __LINE__; 2881 T *x = new T[N]; 2882 T *y = new T[N]; 2883 T *z = new T[N]; 2884 T *q = new T[N]; 2885 __msan_poison(x, N * sizeof(T)); 2886 __msan_set_origin(x, N * sizeof(T), ox); 2887 __msan_set_origin(y, N * sizeof(T), 777777); 2888 __msan_set_origin(z, N * sizeof(T), 888888); 2889 EXPECT_NOT_POISONED(x); 2890 memcpy(y, x, N * sizeof(T)); 2891 EXPECT_POISONED_O(y[0], ox); 2892 EXPECT_POISONED_O(y[N/2], ox); 2893 EXPECT_POISONED_O(y[N-1], ox); 2894 EXPECT_NOT_POISONED(x); 2895 void *res = mempcpy(q, x, N * sizeof(T)); 2896 ASSERT_EQ(q + N, res); 2897 EXPECT_POISONED_O(q[0], ox); 2898 EXPECT_POISONED_O(q[N/2], ox); 2899 EXPECT_POISONED_O(q[N-1], ox); 2900 EXPECT_NOT_POISONED(x); 2901 memmove(z, x, N * sizeof(T)); 2902 EXPECT_POISONED_O(z[0], ox); 2903 EXPECT_POISONED_O(z[N/2], ox); 2904 EXPECT_POISONED_O(z[N-1], ox); 2905} 2906 2907TEST(MemorySanitizerOrigins, LargeMemCpy) { 2908 if (!TrackingOrigins()) return; 2909 MemCpyTest<U1, 10000>(); 2910 MemCpyTest<U8, 10000>(); 2911} 2912 2913TEST(MemorySanitizerOrigins, SmallMemCpy) { 2914 if (!TrackingOrigins()) return; 2915 MemCpyTest<U8, 1>(); 2916 MemCpyTest<U8, 2>(); 2917 MemCpyTest<U8, 3>(); 2918} 2919 2920TEST(MemorySanitizerOrigins, Select) { 2921 if (!TrackingOrigins()) return; 2922 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2923 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2924 S4 x; 2925 break_optimization(&x); 2926 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2927 2928 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2929 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2930} 2931 2932extern "C" 2933NOINLINE char AllocaTO() { 2934 int ar[100]; 2935 break_optimization(ar); 2936 return ar[10]; 2937 // fprintf(stderr, "Descr: %s\n", 2938 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2939} 2940 2941TEST(MemorySanitizerOrigins, Alloca) { 2942 if (!TrackingOrigins()) return; 2943 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2944 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2945 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2946 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2947} 2948 2949// FIXME: replace with a lit-like test. 2950TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2951 if (!TrackingOrigins()) return; 2952 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2953} 2954 2955NOINLINE int RetvalOriginTest(U4 origin) { 2956 int *a = new int; 2957 break_optimization(a); 2958 __msan_set_origin(a, sizeof(*a), origin); 2959 int res = *a; 2960 delete a; 2961 return res; 2962} 2963 2964TEST(MemorySanitizerOrigins, Retval) { 2965 if (!TrackingOrigins()) return; 2966 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2967} 2968 2969NOINLINE void ParamOriginTest(int param, U4 origin) { 2970 EXPECT_POISONED_O(param, origin); 2971} 2972 2973TEST(MemorySanitizerOrigins, Param) { 2974 if (!TrackingOrigins()) return; 2975 int *a = new int; 2976 U4 origin = __LINE__; 2977 break_optimization(a); 2978 __msan_set_origin(a, sizeof(*a), origin); 2979 ParamOriginTest(*a, origin); 2980 delete a; 2981} 2982 2983TEST(MemorySanitizerOrigins, Invoke) { 2984 if (!TrackingOrigins()) return; 2985 StructWithDtor s; // Will cause the calls to become invokes. 2986 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2987} 2988 2989TEST(MemorySanitizerOrigins, strlen) { 2990 S8 alignment; 2991 break_optimization(&alignment); 2992 char x[4] = {'a', 'b', 0, 0}; 2993 __msan_poison(&x[2], 1); 2994 U4 origin = __LINE__; 2995 __msan_set_origin(x, sizeof(x), origin); 2996 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2997} 2998 2999TEST(MemorySanitizerOrigins, wcslen) { 3000 wchar_t w[3] = {'a', 'b', 0}; 3001 U4 origin = __LINE__; 3002 __msan_set_origin(w, sizeof(w), origin); 3003 __msan_poison(&w[2], sizeof(wchar_t)); 3004 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3005} 3006 3007#if MSAN_HAS_M128 3008TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3009 __m128 x, y; 3010 U4 origin = __LINE__; 3011 __msan_set_origin(&x, sizeof(x), origin); 3012 __msan_poison(&x, sizeof(x)); 3013 __builtin_ia32_storeups((float*)&y, x); 3014 EXPECT_POISONED_O(y, origin); 3015} 3016#endif 3017 3018NOINLINE void RecursiveMalloc(int depth) { 3019 static int count; 3020 count++; 3021 if ((count % (1024 * 1024)) == 0) 3022 printf("RecursiveMalloc: %d\n", count); 3023 int *x1 = new int; 3024 int *x2 = new int; 3025 break_optimization(x1); 3026 break_optimization(x2); 3027 if (depth > 0) { 3028 RecursiveMalloc(depth-1); 3029 RecursiveMalloc(depth-1); 3030 } 3031 delete x1; 3032 delete x2; 3033} 3034 3035TEST(MemorySanitizer, Select) { 3036 int x; 3037 int volatile* p = &x; 3038 int z = *p ? 1 : 0; 3039 EXPECT_POISONED(z); 3040} 3041 3042TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3043 RecursiveMalloc(22); 3044} 3045 3046TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3047 size_t sizes[] = {0, 20, 5000, 1<<20}; 3048 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3049 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3050 EXPECT_EQ(alloc_size, sizes[i]); 3051 } 3052} 3053 3054TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3055 char *array = reinterpret_cast<char*>(malloc(100)); 3056 int *int_ptr = new int; 3057 3058 EXPECT_TRUE(__msan_get_ownership(array)); 3059 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3060 3061 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3062 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3063 3064 void *wild_addr = reinterpret_cast<void*>(0x1); 3065 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3066 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3067 3068 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3069 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3070 3071 // NULL is a valid argument for GetAllocatedSize but is not owned. 3072 EXPECT_FALSE(__msan_get_ownership(NULL)); 3073 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3074 3075 free(array); 3076 EXPECT_FALSE(__msan_get_ownership(array)); 3077 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3078 3079 delete int_ptr; 3080} 3081