msan_test.cc revision 9d60087654f89e3452841350d9eca97644edca9d
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 <stdlib.h> 23#include <stdarg.h> 24#include <stdio.h> 25#include <assert.h> 26#include <wchar.h> 27#include <math.h> 28 29#include <arpa/inet.h> 30#include <dlfcn.h> 31#include <grp.h> 32#include <unistd.h> 33#include <link.h> 34#include <limits.h> 35#include <sys/time.h> 36#include <sys/types.h> 37#include <sys/stat.h> 38#include <fcntl.h> 39#include <sys/resource.h> 40#include <sys/ioctl.h> 41#include <sys/utsname.h> 42#include <sys/mman.h> 43#include <sys/vfs.h> 44#include <dirent.h> 45#include <pwd.h> 46#include <sys/socket.h> 47#include <netdb.h> 48 49#if defined(__i386__) || defined(__x86_64__) 50# include <emmintrin.h> 51# define MSAN_HAS_M128 1 52#else 53# define MSAN_HAS_M128 0 54#endif 55 56typedef unsigned char U1; 57typedef unsigned short U2; // NOLINT 58typedef unsigned int U4; 59typedef unsigned long long U8; // NOLINT 60typedef signed char S1; 61typedef signed short S2; // NOLINT 62typedef signed int S4; 63typedef signed long long S8; // NOLINT 64#define NOINLINE __attribute__((noinline)) 65#define INLINE __attribute__((always_inline)) 66 67static bool TrackingOrigins() { 68 S8 x; 69 __msan_set_origin(&x, sizeof(x), 0x1234); 70 U4 origin = __msan_get_origin(&x); 71 __msan_set_origin(&x, sizeof(x), 0); 72 return origin == 0x1234; 73} 74 75#define EXPECT_UMR(action) \ 76 do { \ 77 __msan_set_expect_umr(1); \ 78 action; \ 79 __msan_set_expect_umr(0); \ 80 } while (0) 81 82#define EXPECT_UMR_O(action, origin) \ 83 do { \ 84 __msan_set_expect_umr(1); \ 85 action; \ 86 __msan_set_expect_umr(0); \ 87 if (TrackingOrigins()) \ 88 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 89 } while (0) 90 91#define EXPECT_UMR_S(action, stack_origin) \ 92 do { \ 93 __msan_set_expect_umr(1); \ 94 action; \ 95 __msan_set_expect_umr(0); \ 96 U4 id = __msan_get_umr_origin(); \ 97 const char *str = __msan_get_origin_descr_if_stack(id); \ 98 if (!str || strcmp(str, stack_origin)) { \ 99 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 100 id, stack_origin, str); \ 101 EXPECT_EQ(1, 0); \ 102 } \ 103 } while (0) 104 105#define EXPECT_POISONED(x) ExpectPoisoned(x) 106 107template<typename T> 108void ExpectPoisoned(const T& t) { 109 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 110} 111 112#define EXPECT_POISONED_O(x, origin) \ 113 ExpectPoisonedWithOrigin(x, origin) 114 115template<typename T> 116void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 117 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 118 if (TrackingOrigins()) 119 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 120} 121 122#define EXPECT_POISONED_S(x, stack_origin) \ 123 ExpectPoisonedWithStackOrigin(x, stack_origin) 124 125template<typename T> 126void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 127 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 128 U4 id = __msan_get_origin((void*)&t); 129 const char *str = __msan_get_origin_descr_if_stack(id); 130 if (!str || strcmp(str, stack_origin)) { 131 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 132 id, stack_origin, str); 133 EXPECT_EQ(1, 0); 134 } 135} 136 137#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 138 139template<typename T> 140void ExpectNotPoisoned(const T& t) { 141 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 142} 143 144static U8 poisoned_array[100]; 145template<class T> 146T *GetPoisoned(int i = 0, T val = 0) { 147 T *res = (T*)&poisoned_array[i]; 148 *res = val; 149 __msan_poison(&poisoned_array[i], sizeof(T)); 150 return res; 151} 152 153template<class T> 154T *GetPoisonedO(int i, U4 origin, T val = 0) { 155 T *res = (T*)&poisoned_array[i]; 156 *res = val; 157 __msan_poison(&poisoned_array[i], sizeof(T)); 158 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 159 return res; 160} 161 162// This function returns its parameter but in such a way that compiler 163// can not prove it. 164template<class T> 165NOINLINE 166static T Ident(T t) { 167 volatile T ret = t; 168 return ret; 169} 170 171template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 172 173static volatile int g_one = 1; 174static volatile int g_zero = 0; 175static volatile int g_0 = 0; 176static volatile int g_1 = 1; 177 178S4 a_s4[100]; 179S8 a_s8[100]; 180 181// Check that malloc poisons memory. 182// A lot of tests below depend on this. 183TEST(MemorySanitizerSanity, PoisonInMalloc) { 184 int *x = (int*)malloc(sizeof(int)); 185 EXPECT_POISONED(*x); 186 free(x); 187} 188 189TEST(MemorySanitizer, NegativeTest1) { 190 S4 *x = GetPoisoned<S4>(); 191 if (g_one) 192 *x = 0; 193 EXPECT_NOT_POISONED(*x); 194} 195 196TEST(MemorySanitizer, PositiveTest1) { 197 // Load to store. 198 EXPECT_POISONED(*GetPoisoned<S1>()); 199 EXPECT_POISONED(*GetPoisoned<S2>()); 200 EXPECT_POISONED(*GetPoisoned<S4>()); 201 EXPECT_POISONED(*GetPoisoned<S8>()); 202 203 // S->S conversions. 204 EXPECT_POISONED(*GetPoisoned<S1>()); 205 EXPECT_POISONED(*GetPoisoned<S1>()); 206 EXPECT_POISONED(*GetPoisoned<S1>()); 207 208 EXPECT_POISONED(*GetPoisoned<S2>()); 209 EXPECT_POISONED(*GetPoisoned<S2>()); 210 EXPECT_POISONED(*GetPoisoned<S2>()); 211 212 EXPECT_POISONED(*GetPoisoned<S4>()); 213 EXPECT_POISONED(*GetPoisoned<S4>()); 214 EXPECT_POISONED(*GetPoisoned<S4>()); 215 216 EXPECT_POISONED(*GetPoisoned<S8>()); 217 EXPECT_POISONED(*GetPoisoned<S8>()); 218 EXPECT_POISONED(*GetPoisoned<S8>()); 219 220 // ZExt 221 EXPECT_POISONED(*GetPoisoned<U1>()); 222 EXPECT_POISONED(*GetPoisoned<U1>()); 223 EXPECT_POISONED(*GetPoisoned<U1>()); 224 EXPECT_POISONED(*GetPoisoned<U2>()); 225 EXPECT_POISONED(*GetPoisoned<U2>()); 226 EXPECT_POISONED(*GetPoisoned<U4>()); 227 228 // Unary ops. 229 EXPECT_POISONED(- *GetPoisoned<S4>()); 230 231 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 232 233 234 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 235 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 236} 237 238TEST(MemorySanitizer, Phi1) { 239 S4 c; 240 if (g_one) { 241 c = *GetPoisoned<S4>(); 242 } else { 243 break_optimization(0); 244 c = 0; 245 } 246 EXPECT_POISONED(c); 247} 248 249TEST(MemorySanitizer, Phi2) { 250 S4 i = *GetPoisoned<S4>(); 251 S4 n = g_one; 252 EXPECT_UMR(for (; i < g_one; i++);); 253 EXPECT_POISONED(i); 254} 255 256NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 257NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 258NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 259 260TEST(MemorySanitizer, ArgTest) { 261 Arg1ExpectUMR(*GetPoisoned<S4>()); 262 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 263 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 264} 265 266 267TEST(MemorySanitizer, CallAndRet) { 268 if (!__msan_has_dynamic_component()) return; 269 ReturnPoisoned<S1>(); 270 ReturnPoisoned<S2>(); 271 ReturnPoisoned<S4>(); 272 ReturnPoisoned<S8>(); 273 274 EXPECT_POISONED(ReturnPoisoned<S1>()); 275 EXPECT_POISONED(ReturnPoisoned<S2>()); 276 EXPECT_POISONED(ReturnPoisoned<S4>()); 277 EXPECT_POISONED(ReturnPoisoned<S8>()); 278} 279 280// malloc() in the following test may be optimized to produce a compile-time 281// undef value. Check that we trap on the volatile assignment anyway. 282TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 283 S4 *x = (int*)malloc(sizeof(S4)); 284 EXPECT_POISONED(*x); 285 free(x); 286} 287 288TEST(MemorySanitizer, Malloc) { 289 S4 *x = (int*)Ident(malloc(sizeof(S4))); 290 EXPECT_POISONED(*x); 291 free(x); 292} 293 294TEST(MemorySanitizer, Realloc) { 295 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 296 EXPECT_POISONED(x[0]); 297 x[0] = 1; 298 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 299 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 300 EXPECT_POISONED(x[1]); 301 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 302 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 303 EXPECT_POISONED(x[2]); 304 EXPECT_POISONED(x[1]); 305 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 306 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 307 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 308 EXPECT_POISONED(x[1]); 309 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 310 EXPECT_POISONED(x[1]); 311 EXPECT_POISONED(x[2]); 312 free(x); 313} 314 315TEST(MemorySanitizer, Calloc) { 316 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 317 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 318 // EXPECT_EQ(0, *x); 319 free(x); 320} 321 322TEST(MemorySanitizer, AndOr) { 323 U4 *p = GetPoisoned<U4>(); 324 // We poison two bytes in the midle of a 4-byte word to make the test 325 // correct regardless of endianness. 326 ((U1*)p)[1] = 0; 327 ((U1*)p)[2] = 0xff; 328 EXPECT_NOT_POISONED(*p & 0x00ffff00); 329 EXPECT_NOT_POISONED(*p & 0x00ff0000); 330 EXPECT_NOT_POISONED(*p & 0x0000ff00); 331 EXPECT_POISONED(*p & 0xff000000); 332 EXPECT_POISONED(*p & 0x000000ff); 333 EXPECT_POISONED(*p & 0x0000ffff); 334 EXPECT_POISONED(*p & 0xffff0000); 335 336 EXPECT_NOT_POISONED(*p | 0xff0000ff); 337 EXPECT_NOT_POISONED(*p | 0xff00ffff); 338 EXPECT_NOT_POISONED(*p | 0xffff00ff); 339 EXPECT_POISONED(*p | 0xff000000); 340 EXPECT_POISONED(*p | 0x000000ff); 341 EXPECT_POISONED(*p | 0x0000ffff); 342 EXPECT_POISONED(*p | 0xffff0000); 343 344 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 345} 346 347template<class T> 348static bool applyNot(T value, T shadow) { 349 __msan_partial_poison(&value, &shadow, sizeof(T)); 350 return !value; 351} 352 353TEST(MemorySanitizer, Not) { 354 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 355 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 356 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 357 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 358 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 359 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 360 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 361 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 362 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 363 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 364 365 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 366 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 367 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 368 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 369 370 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 371 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 372} 373 374TEST(MemorySanitizer, Shift) { 375 U4 *up = GetPoisoned<U4>(); 376 ((U1*)up)[0] = 0; 377 ((U1*)up)[3] = 0xff; 378 EXPECT_NOT_POISONED(*up >> 30); 379 EXPECT_NOT_POISONED(*up >> 24); 380 EXPECT_POISONED(*up >> 23); 381 EXPECT_POISONED(*up >> 10); 382 383 EXPECT_NOT_POISONED(*up << 30); 384 EXPECT_NOT_POISONED(*up << 24); 385 EXPECT_POISONED(*up << 23); 386 EXPECT_POISONED(*up << 10); 387 388 S4 *sp = (S4*)up; 389 EXPECT_NOT_POISONED(*sp >> 30); 390 EXPECT_NOT_POISONED(*sp >> 24); 391 EXPECT_POISONED(*sp >> 23); 392 EXPECT_POISONED(*sp >> 10); 393 394 sp = GetPoisoned<S4>(); 395 ((S1*)sp)[1] = 0; 396 ((S1*)sp)[2] = 0; 397 EXPECT_POISONED(*sp >> 31); 398 399 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 400 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 401} 402 403NOINLINE static int GetPoisonedZero() { 404 int *zero = new int; 405 *zero = 0; 406 __msan_poison(zero, sizeof(*zero)); 407 int res = *zero; 408 delete zero; 409 return res; 410} 411 412TEST(MemorySanitizer, LoadFromDirtyAddress) { 413 int *a = new int; 414 *a = 0; 415 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 416 delete a; 417} 418 419TEST(MemorySanitizer, StoreToDirtyAddress) { 420 int *a = new int; 421 EXPECT_UMR(a[GetPoisonedZero()] = 0); 422 break_optimization(a); 423 delete a; 424} 425 426 427NOINLINE void StackTestFunc() { 428 S4 p4; 429 S4 ok4 = 1; 430 S2 p2; 431 S2 ok2 = 1; 432 S1 p1; 433 S1 ok1 = 1; 434 break_optimization(&p4); 435 break_optimization(&ok4); 436 break_optimization(&p2); 437 break_optimization(&ok2); 438 break_optimization(&p1); 439 break_optimization(&ok1); 440 441 EXPECT_POISONED(p4); 442 EXPECT_POISONED(p2); 443 EXPECT_POISONED(p1); 444 EXPECT_NOT_POISONED(ok1); 445 EXPECT_NOT_POISONED(ok2); 446 EXPECT_NOT_POISONED(ok4); 447} 448 449TEST(MemorySanitizer, StackTest) { 450 StackTestFunc(); 451} 452 453NOINLINE void StackStressFunc() { 454 int foo[10000]; 455 break_optimization(foo); 456} 457 458TEST(MemorySanitizer, DISABLED_StackStressTest) { 459 for (int i = 0; i < 1000000; i++) 460 StackStressFunc(); 461} 462 463template<class T> 464void TestFloatingPoint() { 465 static volatile T v; 466 static T g[100]; 467 break_optimization(&g); 468 T *x = GetPoisoned<T>(); 469 T *y = GetPoisoned<T>(1); 470 EXPECT_POISONED(*x); 471 EXPECT_POISONED((long long)*x); 472 EXPECT_POISONED((int)*x); 473 g[0] = *x; 474 g[1] = *x + *y; 475 g[2] = *x - *y; 476 g[3] = *x * *y; 477} 478 479TEST(MemorySanitizer, FloatingPointTest) { 480 TestFloatingPoint<float>(); 481 TestFloatingPoint<double>(); 482} 483 484TEST(MemorySanitizer, DynMem) { 485 S4 x = 0; 486 S4 *y = GetPoisoned<S4>(); 487 memcpy(y, &x, g_one * sizeof(S4)); 488 EXPECT_NOT_POISONED(*y); 489} 490 491static char *DynRetTestStr; 492 493TEST(MemorySanitizer, DynRet) { 494 if (!__msan_has_dynamic_component()) return; 495 ReturnPoisoned<S8>(); 496 EXPECT_NOT_POISONED(clearenv()); 497} 498 499 500TEST(MemorySanitizer, DynRet1) { 501 if (!__msan_has_dynamic_component()) return; 502 ReturnPoisoned<S8>(); 503} 504 505struct LargeStruct { 506 S4 x[10]; 507}; 508 509NOINLINE 510LargeStruct LargeRetTest() { 511 LargeStruct res; 512 res.x[0] = *GetPoisoned<S4>(); 513 res.x[1] = *GetPoisoned<S4>(); 514 res.x[2] = *GetPoisoned<S4>(); 515 res.x[3] = *GetPoisoned<S4>(); 516 res.x[4] = *GetPoisoned<S4>(); 517 res.x[5] = *GetPoisoned<S4>(); 518 res.x[6] = *GetPoisoned<S4>(); 519 res.x[7] = *GetPoisoned<S4>(); 520 res.x[8] = *GetPoisoned<S4>(); 521 res.x[9] = *GetPoisoned<S4>(); 522 return res; 523} 524 525TEST(MemorySanitizer, LargeRet) { 526 LargeStruct a = LargeRetTest(); 527 EXPECT_POISONED(a.x[0]); 528 EXPECT_POISONED(a.x[9]); 529} 530 531TEST(MemorySanitizer, fread) { 532 char *x = new char[32]; 533 FILE *f = fopen("/proc/self/stat", "r"); 534 assert(f); 535 fread(x, 1, 32, f); 536 EXPECT_NOT_POISONED(x[0]); 537 EXPECT_NOT_POISONED(x[16]); 538 EXPECT_NOT_POISONED(x[31]); 539 fclose(f); 540 delete x; 541} 542 543TEST(MemorySanitizer, read) { 544 char *x = new char[32]; 545 int fd = open("/proc/self/stat", O_RDONLY); 546 assert(fd > 0); 547 int sz = read(fd, x, 32); 548 assert(sz == 32); 549 EXPECT_NOT_POISONED(x[0]); 550 EXPECT_NOT_POISONED(x[16]); 551 EXPECT_NOT_POISONED(x[31]); 552 close(fd); 553 delete x; 554} 555 556TEST(MemorySanitizer, pread) { 557 char *x = new char[32]; 558 int fd = open("/proc/self/stat", O_RDONLY); 559 assert(fd > 0); 560 int sz = pread(fd, x, 32, 0); 561 assert(sz == 32); 562 EXPECT_NOT_POISONED(x[0]); 563 EXPECT_NOT_POISONED(x[16]); 564 EXPECT_NOT_POISONED(x[31]); 565 close(fd); 566 delete x; 567} 568 569TEST(MemorySanitizer, readv) { 570 char buf[2011]; 571 struct iovec iov[2]; 572 iov[0].iov_base = buf + 1; 573 iov[0].iov_len = 5; 574 iov[1].iov_base = buf + 10; 575 iov[1].iov_len = 2000; 576 int fd = open("/proc/self/stat", O_RDONLY); 577 assert(fd > 0); 578 int sz = readv(fd, iov, 2); 579 ASSERT_LT(sz, 5 + 2000); 580 ASSERT_GT(sz, iov[0].iov_len); 581 EXPECT_POISONED(buf[0]); 582 EXPECT_NOT_POISONED(buf[1]); 583 EXPECT_NOT_POISONED(buf[5]); 584 EXPECT_POISONED(buf[6]); 585 EXPECT_POISONED(buf[9]); 586 EXPECT_NOT_POISONED(buf[10]); 587 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 588 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 589 close(fd); 590} 591 592TEST(MemorySanitizer, preadv) { 593 char buf[2011]; 594 struct iovec iov[2]; 595 iov[0].iov_base = buf + 1; 596 iov[0].iov_len = 5; 597 iov[1].iov_base = buf + 10; 598 iov[1].iov_len = 2000; 599 int fd = open("/proc/self/stat", O_RDONLY); 600 assert(fd > 0); 601 int sz = preadv(fd, iov, 2, 3); 602 ASSERT_LT(sz, 5 + 2000); 603 ASSERT_GT(sz, iov[0].iov_len); 604 EXPECT_POISONED(buf[0]); 605 EXPECT_NOT_POISONED(buf[1]); 606 EXPECT_NOT_POISONED(buf[5]); 607 EXPECT_POISONED(buf[6]); 608 EXPECT_POISONED(buf[9]); 609 EXPECT_NOT_POISONED(buf[10]); 610 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 611 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 612 close(fd); 613} 614 615// FIXME: fails now. 616TEST(MemorySanitizer, DISABLED_ioctl) { 617 struct winsize ws; 618 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 619 EXPECT_NOT_POISONED(ws.ws_col); 620} 621 622TEST(MemorySanitizer, readlink) { 623 char *x = new char[1000]; 624 readlink("/proc/self/exe", x, 1000); 625 EXPECT_NOT_POISONED(x[0]); 626 delete [] x; 627} 628 629 630TEST(MemorySanitizer, stat) { 631 struct stat* st = new struct stat; 632 int res = stat("/proc/self/stat", st); 633 assert(!res); 634 EXPECT_NOT_POISONED(st->st_dev); 635 EXPECT_NOT_POISONED(st->st_mode); 636 EXPECT_NOT_POISONED(st->st_size); 637} 638 639TEST(MemorySanitizer, statfs) { 640 struct statfs* st = new struct statfs; 641 int res = statfs("/", st); 642 assert(!res); 643 EXPECT_NOT_POISONED(st->f_type); 644 EXPECT_NOT_POISONED(st->f_bfree); 645 EXPECT_NOT_POISONED(st->f_namelen); 646} 647 648TEST(MemorySanitizer, pipe) { 649 int* pipefd = new int[2]; 650 int res = pipe(pipefd); 651 assert(!res); 652 EXPECT_NOT_POISONED(pipefd[0]); 653 EXPECT_NOT_POISONED(pipefd[1]); 654 close(pipefd[0]); 655 close(pipefd[1]); 656} 657 658TEST(MemorySanitizer, pipe2) { 659 int* pipefd = new int[2]; 660 int res = pipe2(pipefd, O_NONBLOCK); 661 assert(!res); 662 EXPECT_NOT_POISONED(pipefd[0]); 663 EXPECT_NOT_POISONED(pipefd[1]); 664 close(pipefd[0]); 665 close(pipefd[1]); 666} 667 668TEST(MemorySanitizer, socketpair) { 669 int sv[2]; 670 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 671 assert(!res); 672 EXPECT_NOT_POISONED(sv[0]); 673 EXPECT_NOT_POISONED(sv[1]); 674 close(sv[0]); 675 close(sv[1]); 676} 677 678TEST(MemorySanitizer, bind_getsockname) { 679 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 680 681 struct sockaddr_in sai; 682 memset(&sai, 0, sizeof(sai)); 683 sai.sin_family = AF_UNIX; 684 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 685 686 assert(!res); 687 char buf[200]; 688 socklen_t addrlen; 689 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 690 691 addrlen = sizeof(buf); 692 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 693 EXPECT_NOT_POISONED(addrlen); 694 EXPECT_NOT_POISONED(buf[0]); 695 EXPECT_NOT_POISONED(buf[addrlen - 1]); 696 EXPECT_POISONED(buf[addrlen]); 697 close(sock); 698} 699 700TEST(MemorySanitizer, accept) { 701 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 702 ASSERT_LT(0, listen_socket); 703 704 struct sockaddr_in sai; 705 sai.sin_family = AF_INET; 706 sai.sin_port = 0; 707 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 708 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 709 ASSERT_EQ(0, res); 710 711 res = listen(listen_socket, 1); 712 ASSERT_EQ(0, res); 713 714 socklen_t sz = sizeof(sai); 715 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 716 ASSERT_EQ(0, res); 717 ASSERT_EQ(sizeof(sai), sz); 718 719 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 720 ASSERT_LT(0, connect_socket); 721 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 722 ASSERT_EQ(0, res); 723 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 724 ASSERT_EQ(-1, res); 725 ASSERT_EQ(EINPROGRESS, errno); 726 727 __msan_poison(&sai, sizeof(sai)); 728 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 729 ASSERT_LT(0, new_sock); 730 ASSERT_EQ(sizeof(sai), sz); 731 EXPECT_NOT_POISONED(sai); 732 733 __msan_poison(&sai, sizeof(sai)); 734 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 735 ASSERT_EQ(0, res); 736 ASSERT_EQ(sizeof(sai), sz); 737 EXPECT_NOT_POISONED(sai); 738 739 close(new_sock); 740 close(connect_socket); 741 close(listen_socket); 742} 743 744TEST(MemorySanitizer, getaddrinfo) { 745 struct addrinfo *ai; 746 struct addrinfo hints; 747 memset(&hints, 0, sizeof(hints)); 748 hints.ai_family = AF_INET; 749 int res = getaddrinfo("localhost", NULL, &hints, &ai); 750 ASSERT_EQ(0, res); 751 EXPECT_NOT_POISONED(*ai); 752 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 753 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 754} 755 756#define EXPECT_HOSTENT_NOT_POISONED(he) \ 757 do { \ 758 EXPECT_NOT_POISONED(*(he)); \ 759 ASSERT_NE((void *) 0, (he)->h_name); \ 760 ASSERT_NE((void *) 0, (he)->h_aliases); \ 761 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 762 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 763 char **p = (he)->h_aliases; \ 764 while (*p) { \ 765 EXPECT_NOT_POISONED(strlen(*p)); \ 766 ++p; \ 767 } \ 768 char **q = (he)->h_addr_list; \ 769 while (*q) { \ 770 EXPECT_NOT_POISONED(*q[0]); \ 771 ++q; \ 772 } \ 773 EXPECT_NOT_POISONED(*q); \ 774 } while (0) 775 776TEST(MemorySanitizer, gethostent) { 777 struct hostent *he = gethostent(); 778 ASSERT_NE((void *)NULL, he); 779 EXPECT_HOSTENT_NOT_POISONED(he); 780} 781 782TEST(MemorySanitizer, gethostbyname) { 783 struct hostent *he = gethostbyname("localhost"); 784 ASSERT_NE((void *)NULL, he); 785 EXPECT_HOSTENT_NOT_POISONED(he); 786} 787 788TEST(MemorySanitizer, gethostbyname2) { 789 struct hostent *he = gethostbyname2("localhost", AF_INET); 790 ASSERT_NE((void *)NULL, he); 791 EXPECT_HOSTENT_NOT_POISONED(he); 792} 793 794TEST(MemorySanitizer, gethostbyaddr) { 795 in_addr_t addr = inet_addr("127.0.0.1"); 796 EXPECT_NOT_POISONED(addr); 797 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 798 ASSERT_NE((void *)NULL, he); 799 EXPECT_HOSTENT_NOT_POISONED(he); 800} 801 802TEST(MemorySanitizer, gethostent_r) { 803 char buf[2000]; 804 struct hostent he; 805 struct hostent *result; 806 int err; 807 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 808 ASSERT_EQ(0, res); 809 EXPECT_NOT_POISONED(result); 810 ASSERT_NE((void *)NULL, result); 811 EXPECT_HOSTENT_NOT_POISONED(result); 812 EXPECT_NOT_POISONED(err); 813} 814 815TEST(MemorySanitizer, gethostbyname_r) { 816 char buf[2000]; 817 struct hostent he; 818 struct hostent *result; 819 int err; 820 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 821 ASSERT_EQ(0, res); 822 EXPECT_NOT_POISONED(result); 823 ASSERT_NE((void *)NULL, result); 824 EXPECT_HOSTENT_NOT_POISONED(result); 825 EXPECT_NOT_POISONED(err); 826} 827 828TEST(MemorySanitizer, gethostbyname2_r) { 829 char buf[2000]; 830 struct hostent he; 831 struct hostent *result; 832 int err; 833 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 834 &result, &err); 835 ASSERT_EQ(0, res); 836 EXPECT_NOT_POISONED(result); 837 ASSERT_NE((void *)NULL, result); 838 EXPECT_HOSTENT_NOT_POISONED(result); 839 EXPECT_NOT_POISONED(err); 840} 841 842TEST(MemorySanitizer, gethostbyaddr_r) { 843 char buf[2000]; 844 struct hostent he; 845 struct hostent *result; 846 int err; 847 in_addr_t addr = inet_addr("127.0.0.1"); 848 EXPECT_NOT_POISONED(addr); 849 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 850 &result, &err); 851 ASSERT_EQ(0, res); 852 EXPECT_NOT_POISONED(result); 853 ASSERT_NE((void *)NULL, result); 854 EXPECT_HOSTENT_NOT_POISONED(result); 855 EXPECT_NOT_POISONED(err); 856} 857 858TEST(MemorySanitizer, getsockopt) { 859 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 860 struct linger l[2]; 861 socklen_t sz = sizeof(l[0]); 862 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 863 ASSERT_EQ(0, res); 864 ASSERT_EQ(sizeof(l[0]), sz); 865 EXPECT_NOT_POISONED(l[0]); 866 EXPECT_POISONED(*(char *)(l + 1)); 867} 868 869TEST(MemorySanitizer, getcwd) { 870 char path[PATH_MAX + 1]; 871 char* res = getcwd(path, sizeof(path)); 872 assert(res); 873 EXPECT_NOT_POISONED(path[0]); 874} 875 876TEST(MemorySanitizer, getcwd_gnu) { 877 char* res = getcwd(NULL, 0); 878 assert(res); 879 EXPECT_NOT_POISONED(res[0]); 880 free(res); 881} 882 883TEST(MemorySanitizer, readdir) { 884 DIR *dir = opendir("."); 885 struct dirent *d = readdir(dir); 886 assert(d); 887 EXPECT_NOT_POISONED(d->d_name[0]); 888 closedir(dir); 889} 890 891TEST(MemorySanitizer, realpath) { 892 const char* relpath = "."; 893 char path[PATH_MAX + 1]; 894 char* res = realpath(relpath, path); 895 assert(res); 896 EXPECT_NOT_POISONED(path[0]); 897} 898 899TEST(MemorySanitizer, memcpy) { 900 char* x = new char[2]; 901 char* y = new char[2]; 902 x[0] = 1; 903 x[1] = *GetPoisoned<char>(); 904 memcpy(y, x, 2); 905 EXPECT_NOT_POISONED(y[0]); 906 EXPECT_POISONED(y[1]); 907} 908 909TEST(MemorySanitizer, memmove) { 910 char* x = new char[2]; 911 char* y = new char[2]; 912 x[0] = 1; 913 x[1] = *GetPoisoned<char>(); 914 memmove(y, x, 2); 915 EXPECT_NOT_POISONED(y[0]); 916 EXPECT_POISONED(y[1]); 917} 918 919TEST(MemorySanitizer, strdup) { 920 char buf[4] = "abc"; 921 __msan_poison(buf + 2, sizeof(*buf)); 922 char *x = strdup(buf); 923 EXPECT_NOT_POISONED(x[0]); 924 EXPECT_NOT_POISONED(x[1]); 925 EXPECT_POISONED(x[2]); 926 EXPECT_NOT_POISONED(x[3]); 927 free(x); 928} 929 930TEST(MemorySanitizer, strndup) { 931 char buf[4] = "abc"; 932 __msan_poison(buf + 2, sizeof(*buf)); 933 char *x = strndup(buf, 3); 934 EXPECT_NOT_POISONED(x[0]); 935 EXPECT_NOT_POISONED(x[1]); 936 EXPECT_POISONED(x[2]); 937 EXPECT_NOT_POISONED(x[3]); 938 free(x); 939} 940 941TEST(MemorySanitizer, strndup_short) { 942 char buf[4] = "abc"; 943 __msan_poison(buf + 1, sizeof(*buf)); 944 __msan_poison(buf + 2, sizeof(*buf)); 945 char *x = strndup(buf, 2); 946 EXPECT_NOT_POISONED(x[0]); 947 EXPECT_POISONED(x[1]); 948 EXPECT_NOT_POISONED(x[2]); 949 free(x); 950} 951 952 953template<class T, int size> 954void TestOverlapMemmove() { 955 T *x = new T[size]; 956 assert(size >= 3); 957 x[2] = 0; 958 memmove(x, x + 1, (size - 1) * sizeof(T)); 959 EXPECT_NOT_POISONED(x[1]); 960 if (!__msan_has_dynamic_component()) { 961 // FIXME: under DR we will lose this information 962 // because accesses in memmove will unpoisin the shadow. 963 // We need to use our own memove implementation instead of libc's. 964 EXPECT_POISONED(x[0]); 965 EXPECT_POISONED(x[2]); 966 } 967 delete [] x; 968} 969 970TEST(MemorySanitizer, overlap_memmove) { 971 TestOverlapMemmove<U1, 10>(); 972 TestOverlapMemmove<U1, 1000>(); 973 TestOverlapMemmove<U8, 4>(); 974 TestOverlapMemmove<U8, 1000>(); 975} 976 977TEST(MemorySanitizer, strcpy) { // NOLINT 978 char* x = new char[3]; 979 char* y = new char[3]; 980 x[0] = 'a'; 981 x[1] = *GetPoisoned<char>(1, 1); 982 x[2] = 0; 983 strcpy(y, x); // NOLINT 984 EXPECT_NOT_POISONED(y[0]); 985 EXPECT_POISONED(y[1]); 986 EXPECT_NOT_POISONED(y[2]); 987} 988 989TEST(MemorySanitizer, strncpy) { // NOLINT 990 char* x = new char[3]; 991 char* y = new char[3]; 992 x[0] = 'a'; 993 x[1] = *GetPoisoned<char>(1, 1); 994 x[2] = 0; 995 strncpy(y, x, 2); // NOLINT 996 EXPECT_NOT_POISONED(y[0]); 997 EXPECT_POISONED(y[1]); 998 EXPECT_POISONED(y[2]); 999} 1000 1001TEST(MemorySanitizer, strtol) { 1002 char *e; 1003 assert(1 == strtol("1", &e, 10)); 1004 EXPECT_NOT_POISONED((S8) e); 1005} 1006 1007TEST(MemorySanitizer, strtoll) { 1008 char *e; 1009 assert(1 == strtoll("1", &e, 10)); 1010 EXPECT_NOT_POISONED((S8) e); 1011} 1012 1013TEST(MemorySanitizer, strtoul) { 1014 char *e; 1015 assert(1 == strtoul("1", &e, 10)); 1016 EXPECT_NOT_POISONED((S8) e); 1017} 1018 1019TEST(MemorySanitizer, strtoull) { 1020 char *e; 1021 assert(1 == strtoull("1", &e, 10)); 1022 EXPECT_NOT_POISONED((S8) e); 1023} 1024 1025TEST(MemorySanitizer, strtod) { 1026 char *e; 1027 assert(0 != strtod("1.5", &e)); 1028 EXPECT_NOT_POISONED((S8) e); 1029} 1030 1031TEST(MemorySanitizer, strtof) { 1032 char *e; 1033 assert(0 != strtof("1.5", &e)); 1034 EXPECT_NOT_POISONED((S8) e); 1035} 1036 1037TEST(MemorySanitizer, strtold) { 1038 char *e; 1039 assert(0 != strtold("1.5", &e)); 1040 EXPECT_NOT_POISONED((S8) e); 1041} 1042 1043TEST(MemorySanitizer, modf) { 1044 double x, y; 1045 x = modf(2.1, &y); 1046 EXPECT_NOT_POISONED(y); 1047} 1048 1049TEST(MemorySanitizer, modff) { 1050 float x, y; 1051 x = modff(2.1, &y); 1052 EXPECT_NOT_POISONED(y); 1053} 1054 1055TEST(MemorySanitizer, modfl) { 1056 long double x, y; 1057 x = modfl(2.1, &y); 1058 EXPECT_NOT_POISONED(y); 1059} 1060 1061TEST(MemorySanitizer, sprintf) { // NOLINT 1062 char buff[10]; 1063 break_optimization(buff); 1064 EXPECT_POISONED(buff[0]); 1065 int res = sprintf(buff, "%d", 1234567); // NOLINT 1066 assert(res == 7); 1067 assert(buff[0] == '1'); 1068 assert(buff[1] == '2'); 1069 assert(buff[2] == '3'); 1070 assert(buff[6] == '7'); 1071 assert(buff[7] == 0); 1072 EXPECT_POISONED(buff[8]); 1073} 1074 1075TEST(MemorySanitizer, snprintf) { 1076 char buff[10]; 1077 break_optimization(buff); 1078 EXPECT_POISONED(buff[0]); 1079 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1080 assert(res == 7); 1081 assert(buff[0] == '1'); 1082 assert(buff[1] == '2'); 1083 assert(buff[2] == '3'); 1084 assert(buff[6] == '7'); 1085 assert(buff[7] == 0); 1086 EXPECT_POISONED(buff[8]); 1087} 1088 1089TEST(MemorySanitizer, swprintf) { 1090 wchar_t buff[10]; 1091 assert(sizeof(wchar_t) == 4); 1092 break_optimization(buff); 1093 EXPECT_POISONED(buff[0]); 1094 int res = swprintf(buff, 9, L"%d", 1234567); 1095 assert(res == 7); 1096 assert(buff[0] == '1'); 1097 assert(buff[1] == '2'); 1098 assert(buff[2] == '3'); 1099 assert(buff[6] == '7'); 1100 assert(buff[7] == 0); 1101 EXPECT_POISONED(buff[8]); 1102} 1103 1104TEST(MemorySanitizer, asprintf) { // NOLINT 1105 char *pbuf; 1106 EXPECT_POISONED(pbuf); 1107 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1108 assert(res == 7); 1109 EXPECT_NOT_POISONED(pbuf); 1110 assert(pbuf[0] == '1'); 1111 assert(pbuf[1] == '2'); 1112 assert(pbuf[2] == '3'); 1113 assert(pbuf[6] == '7'); 1114 assert(pbuf[7] == 0); 1115 free(pbuf); 1116} 1117 1118TEST(MemorySanitizer, wcstombs) { 1119 const wchar_t *x = L"abc"; 1120 char buff[10]; 1121 int res = wcstombs(buff, x, 4); 1122 EXPECT_EQ(res, 3); 1123 EXPECT_EQ(buff[0], 'a'); 1124 EXPECT_EQ(buff[1], 'b'); 1125 EXPECT_EQ(buff[2], 'c'); 1126} 1127 1128TEST(MemorySanitizer, gettimeofday) { 1129 struct timeval tv; 1130 struct timezone tz; 1131 break_optimization(&tv); 1132 break_optimization(&tz); 1133 assert(sizeof(tv) == 16); 1134 assert(sizeof(tz) == 8); 1135 EXPECT_POISONED(tv.tv_sec); 1136 EXPECT_POISONED(tv.tv_usec); 1137 EXPECT_POISONED(tz.tz_minuteswest); 1138 EXPECT_POISONED(tz.tz_dsttime); 1139 assert(0 == gettimeofday(&tv, &tz)); 1140 EXPECT_NOT_POISONED(tv.tv_sec); 1141 EXPECT_NOT_POISONED(tv.tv_usec); 1142 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1143 EXPECT_NOT_POISONED(tz.tz_dsttime); 1144} 1145 1146TEST(MemorySanitizer, clock_gettime) { 1147 struct timespec tp; 1148 EXPECT_POISONED(tp.tv_sec); 1149 EXPECT_POISONED(tp.tv_nsec); 1150 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1151 EXPECT_NOT_POISONED(tp.tv_sec); 1152 EXPECT_NOT_POISONED(tp.tv_nsec); 1153} 1154 1155TEST(MemorySanitizer, clock_getres) { 1156 struct timespec tp; 1157 EXPECT_POISONED(tp.tv_sec); 1158 EXPECT_POISONED(tp.tv_nsec); 1159 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1160 EXPECT_POISONED(tp.tv_sec); 1161 EXPECT_POISONED(tp.tv_nsec); 1162 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1163 EXPECT_NOT_POISONED(tp.tv_sec); 1164 EXPECT_NOT_POISONED(tp.tv_nsec); 1165} 1166 1167TEST(MemorySanitizer, getitimer) { 1168 struct itimerval it1, it2; 1169 int res; 1170 EXPECT_POISONED(it1.it_interval.tv_sec); 1171 EXPECT_POISONED(it1.it_interval.tv_usec); 1172 EXPECT_POISONED(it1.it_value.tv_sec); 1173 EXPECT_POISONED(it1.it_value.tv_usec); 1174 res = getitimer(ITIMER_VIRTUAL, &it1); 1175 assert(!res); 1176 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1177 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1178 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1179 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1180 1181 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1182 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1183 1184 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1185 assert(!res); 1186 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1187 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1188 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1189 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1190 1191 // Check that old_value can be 0, and disable the timer. 1192 memset(&it1, 0, sizeof(it1)); 1193 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1194 assert(!res); 1195} 1196 1197TEST(MemorySanitizer, time) { 1198 time_t t; 1199 EXPECT_POISONED(t); 1200 time_t t2 = time(&t); 1201 assert(t2 != (time_t)-1); 1202 EXPECT_NOT_POISONED(t); 1203} 1204 1205TEST(MemorySanitizer, localtime) { 1206 time_t t = 123; 1207 struct tm *time = localtime(&t); 1208 assert(time != 0); 1209 EXPECT_NOT_POISONED(time->tm_sec); 1210 EXPECT_NOT_POISONED(time->tm_hour); 1211 EXPECT_NOT_POISONED(time->tm_year); 1212 EXPECT_NOT_POISONED(time->tm_isdst); 1213} 1214 1215TEST(MemorySanitizer, localtime_r) { 1216 time_t t = 123; 1217 struct tm time; 1218 struct tm *res = localtime_r(&t, &time); 1219 assert(res != 0); 1220 EXPECT_NOT_POISONED(time.tm_sec); 1221 EXPECT_NOT_POISONED(time.tm_hour); 1222 EXPECT_NOT_POISONED(time.tm_year); 1223 EXPECT_NOT_POISONED(time.tm_isdst); 1224} 1225 1226TEST(MemorySanitizer, mmap) { 1227 const int size = 4096; 1228 void *p1, *p2; 1229 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1230 __msan_poison(p1, size); 1231 munmap(p1, size); 1232 for (int i = 0; i < 1000; i++) { 1233 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1234 if (p2 == p1) 1235 break; 1236 else 1237 munmap(p2, size); 1238 } 1239 if (p1 == p2) { 1240 EXPECT_NOT_POISONED(*(char*)p2); 1241 munmap(p2, size); 1242 } 1243} 1244 1245// FIXME: enable and add ecvt. 1246// FIXME: check why msandr does nt handle fcvt. 1247TEST(MemorySanitizer, fcvt) { 1248 int a, b; 1249 break_optimization(&a); 1250 break_optimization(&b); 1251 EXPECT_POISONED(a); 1252 EXPECT_POISONED(b); 1253 char *str = fcvt(12345.6789, 10, &a, &b); 1254 EXPECT_NOT_POISONED(a); 1255 EXPECT_NOT_POISONED(b); 1256} 1257 1258TEST(MemorySanitizer, frexp) { 1259 int x; 1260 x = *GetPoisoned<int>(); 1261 double r = frexp(1.1, &x); 1262 EXPECT_NOT_POISONED(r); 1263 EXPECT_NOT_POISONED(x); 1264 1265 x = *GetPoisoned<int>(); 1266 float rf = frexpf(1.1, &x); 1267 EXPECT_NOT_POISONED(rf); 1268 EXPECT_NOT_POISONED(x); 1269 1270 x = *GetPoisoned<int>(); 1271 double rl = frexpl(1.1, &x); 1272 EXPECT_NOT_POISONED(rl); 1273 EXPECT_NOT_POISONED(x); 1274} 1275 1276namespace { 1277 1278static int cnt; 1279 1280void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1281 assert(signo == SIGPROF); 1282 assert(si); 1283 EXPECT_NOT_POISONED(si->si_errno); 1284 EXPECT_NOT_POISONED(si->si_pid); 1285#if __linux__ 1286# if defined(__x86_64__) 1287 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1288# elif defined(__i386__) 1289 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1290# endif 1291#endif 1292 ++cnt; 1293} 1294 1295TEST(MemorySanitizer, sigaction) { 1296 struct sigaction act = {}; 1297 struct sigaction oldact = {}; 1298 struct sigaction origact = {}; 1299 1300 sigaction(SIGPROF, 0, &origact); 1301 1302 act.sa_flags |= SA_SIGINFO; 1303 act.sa_sigaction = &SigactionHandler; 1304 sigaction(SIGPROF, &act, 0); 1305 1306 kill(getpid(), SIGPROF); 1307 1308 act.sa_flags &= ~SA_SIGINFO; 1309 act.sa_handler = SIG_DFL; 1310 sigaction(SIGPROF, &act, 0); 1311 1312 act.sa_flags &= ~SA_SIGINFO; 1313 act.sa_handler = SIG_IGN; 1314 sigaction(SIGPROF, &act, &oldact); 1315 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1316 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1317 kill(getpid(), SIGPROF); 1318 1319 act.sa_flags |= SA_SIGINFO; 1320 act.sa_sigaction = &SigactionHandler; 1321 sigaction(SIGPROF, &act, &oldact); 1322 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1323 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1324 kill(getpid(), SIGPROF); 1325 1326 act.sa_flags &= ~SA_SIGINFO; 1327 act.sa_handler = SIG_DFL; 1328 sigaction(SIGPROF, &act, &oldact); 1329 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1330 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1331 EXPECT_EQ(2, cnt); 1332 1333 sigaction(SIGPROF, &origact, 0); 1334} 1335 1336} // namespace 1337 1338struct StructWithDtor { 1339 ~StructWithDtor(); 1340}; 1341 1342NOINLINE StructWithDtor::~StructWithDtor() { 1343 break_optimization(0); 1344} 1345 1346TEST(MemorySanitizer, Invoke) { 1347 StructWithDtor s; // Will cause the calls to become invokes. 1348 EXPECT_NOT_POISONED(0); 1349 EXPECT_POISONED(*GetPoisoned<int>()); 1350 EXPECT_NOT_POISONED(0); 1351 EXPECT_POISONED(*GetPoisoned<int>()); 1352 EXPECT_POISONED(ReturnPoisoned<S4>()); 1353} 1354 1355TEST(MemorySanitizer, ptrtoint) { 1356 // Test that shadow is propagated through pointer-to-integer conversion. 1357 void* p = (void*)0xABCD; 1358 __msan_poison(((char*)&p) + 1, sizeof(p)); 1359 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1360 1361 void* q = (void*)0xABCD; 1362 __msan_poison(&q, sizeof(q) - 1); 1363 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1364} 1365 1366static void vaargsfn2(int guard, ...) { 1367 va_list vl; 1368 va_start(vl, guard); 1369 EXPECT_NOT_POISONED(va_arg(vl, int)); 1370 EXPECT_NOT_POISONED(va_arg(vl, int)); 1371 EXPECT_NOT_POISONED(va_arg(vl, int)); 1372 EXPECT_POISONED(va_arg(vl, double)); 1373 va_end(vl); 1374} 1375 1376static void vaargsfn(int guard, ...) { 1377 va_list vl; 1378 va_start(vl, guard); 1379 EXPECT_NOT_POISONED(va_arg(vl, int)); 1380 EXPECT_POISONED(va_arg(vl, int)); 1381 // The following call will overwrite __msan_param_tls. 1382 // Checks after it test that arg shadow was somehow saved across the call. 1383 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1384 EXPECT_NOT_POISONED(va_arg(vl, int)); 1385 EXPECT_POISONED(va_arg(vl, int)); 1386 va_end(vl); 1387} 1388 1389TEST(MemorySanitizer, VAArgTest) { 1390 int* x = GetPoisoned<int>(); 1391 int* y = GetPoisoned<int>(4); 1392 vaargsfn(1, 13, *x, 42, *y); 1393} 1394 1395static void vaargsfn_many(int guard, ...) { 1396 va_list vl; 1397 va_start(vl, guard); 1398 EXPECT_NOT_POISONED(va_arg(vl, int)); 1399 EXPECT_POISONED(va_arg(vl, int)); 1400 EXPECT_NOT_POISONED(va_arg(vl, int)); 1401 EXPECT_NOT_POISONED(va_arg(vl, int)); 1402 EXPECT_NOT_POISONED(va_arg(vl, int)); 1403 EXPECT_NOT_POISONED(va_arg(vl, int)); 1404 EXPECT_NOT_POISONED(va_arg(vl, int)); 1405 EXPECT_NOT_POISONED(va_arg(vl, int)); 1406 EXPECT_NOT_POISONED(va_arg(vl, int)); 1407 EXPECT_POISONED(va_arg(vl, int)); 1408 va_end(vl); 1409} 1410 1411TEST(MemorySanitizer, VAArgManyTest) { 1412 int* x = GetPoisoned<int>(); 1413 int* y = GetPoisoned<int>(4); 1414 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1415} 1416 1417static void vaargsfn_pass2(va_list vl) { 1418 EXPECT_NOT_POISONED(va_arg(vl, int)); 1419 EXPECT_NOT_POISONED(va_arg(vl, int)); 1420 EXPECT_POISONED(va_arg(vl, int)); 1421} 1422 1423static void vaargsfn_pass(int guard, ...) { 1424 va_list vl; 1425 va_start(vl, guard); 1426 EXPECT_POISONED(va_arg(vl, int)); 1427 vaargsfn_pass2(vl); 1428 va_end(vl); 1429} 1430 1431TEST(MemorySanitizer, VAArgPass) { 1432 int* x = GetPoisoned<int>(); 1433 int* y = GetPoisoned<int>(4); 1434 vaargsfn_pass(1, *x, 2, 3, *y); 1435} 1436 1437static void vaargsfn_copy2(va_list vl) { 1438 EXPECT_NOT_POISONED(va_arg(vl, int)); 1439 EXPECT_POISONED(va_arg(vl, int)); 1440} 1441 1442static void vaargsfn_copy(int guard, ...) { 1443 va_list vl; 1444 va_start(vl, guard); 1445 EXPECT_NOT_POISONED(va_arg(vl, int)); 1446 EXPECT_POISONED(va_arg(vl, int)); 1447 va_list vl2; 1448 va_copy(vl2, vl); 1449 vaargsfn_copy2(vl2); 1450 EXPECT_NOT_POISONED(va_arg(vl, int)); 1451 EXPECT_POISONED(va_arg(vl, int)); 1452 va_end(vl); 1453} 1454 1455TEST(MemorySanitizer, VAArgCopy) { 1456 int* x = GetPoisoned<int>(); 1457 int* y = GetPoisoned<int>(4); 1458 vaargsfn_copy(1, 2, *x, 3, *y); 1459} 1460 1461static void vaargsfn_ptr(int guard, ...) { 1462 va_list vl; 1463 va_start(vl, guard); 1464 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1465 EXPECT_POISONED(va_arg(vl, int*)); 1466 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1467 EXPECT_POISONED(va_arg(vl, double*)); 1468 va_end(vl); 1469} 1470 1471TEST(MemorySanitizer, VAArgPtr) { 1472 int** x = GetPoisoned<int*>(); 1473 double** y = GetPoisoned<double*>(8); 1474 int z; 1475 vaargsfn_ptr(1, &z, *x, &z, *y); 1476} 1477 1478static void vaargsfn_overflow(int guard, ...) { 1479 va_list vl; 1480 va_start(vl, guard); 1481 EXPECT_NOT_POISONED(va_arg(vl, int)); 1482 EXPECT_NOT_POISONED(va_arg(vl, int)); 1483 EXPECT_POISONED(va_arg(vl, int)); 1484 EXPECT_NOT_POISONED(va_arg(vl, int)); 1485 EXPECT_NOT_POISONED(va_arg(vl, int)); 1486 EXPECT_NOT_POISONED(va_arg(vl, int)); 1487 1488 EXPECT_NOT_POISONED(va_arg(vl, double)); 1489 EXPECT_NOT_POISONED(va_arg(vl, double)); 1490 EXPECT_NOT_POISONED(va_arg(vl, double)); 1491 EXPECT_POISONED(va_arg(vl, double)); 1492 EXPECT_NOT_POISONED(va_arg(vl, double)); 1493 EXPECT_POISONED(va_arg(vl, int*)); 1494 EXPECT_NOT_POISONED(va_arg(vl, double)); 1495 EXPECT_NOT_POISONED(va_arg(vl, double)); 1496 1497 EXPECT_POISONED(va_arg(vl, int)); 1498 EXPECT_POISONED(va_arg(vl, double)); 1499 EXPECT_POISONED(va_arg(vl, int*)); 1500 1501 EXPECT_NOT_POISONED(va_arg(vl, int)); 1502 EXPECT_NOT_POISONED(va_arg(vl, double)); 1503 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1504 1505 EXPECT_POISONED(va_arg(vl, int)); 1506 EXPECT_POISONED(va_arg(vl, double)); 1507 EXPECT_POISONED(va_arg(vl, int*)); 1508 1509 va_end(vl); 1510} 1511 1512TEST(MemorySanitizer, VAArgOverflow) { 1513 int* x = GetPoisoned<int>(); 1514 double* y = GetPoisoned<double>(8); 1515 int** p = GetPoisoned<int*>(16); 1516 int z; 1517 vaargsfn_overflow(1, 1518 1, 2, *x, 4, 5, 6, 1519 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1520 // the following args will overflow for sure 1521 *x, *y, *p, 1522 7, 9.9, &z, 1523 *x, *y, *p); 1524} 1525 1526static void vaargsfn_tlsoverwrite2(int guard, ...) { 1527 va_list vl; 1528 va_start(vl, guard); 1529 EXPECT_NOT_POISONED(va_arg(vl, int)); 1530 va_end(vl); 1531} 1532 1533static void vaargsfn_tlsoverwrite(int guard, ...) { 1534 // This call will overwrite TLS contents unless it's backed up somewhere. 1535 vaargsfn_tlsoverwrite2(2, 42); 1536 va_list vl; 1537 va_start(vl, guard); 1538 EXPECT_POISONED(va_arg(vl, int)); 1539 va_end(vl); 1540} 1541 1542TEST(MemorySanitizer, VAArgTLSOverwrite) { 1543 int* x = GetPoisoned<int>(); 1544 vaargsfn_tlsoverwrite(1, *x); 1545} 1546 1547struct StructByVal { 1548 int a, b, c, d, e, f; 1549}; 1550 1551NOINLINE void StructByValTestFunc(struct StructByVal s) { 1552 EXPECT_NOT_POISONED(s.a); 1553 EXPECT_POISONED(s.b); 1554 EXPECT_NOT_POISONED(s.c); 1555 EXPECT_POISONED(s.d); 1556 EXPECT_NOT_POISONED(s.e); 1557 EXPECT_POISONED(s.f); 1558} 1559 1560NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1561 StructByValTestFunc(s); 1562} 1563 1564NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1565 StructByValTestFunc(s); 1566} 1567 1568TEST(MemorySanitizer, StructByVal) { 1569 // Large aggregates are passed as "byval" pointer argument in LLVM. 1570 struct StructByVal s; 1571 s.a = 1; 1572 s.b = *GetPoisoned<int>(); 1573 s.c = 2; 1574 s.d = *GetPoisoned<int>(); 1575 s.e = 3; 1576 s.f = *GetPoisoned<int>(); 1577 StructByValTestFunc(s); 1578 StructByValTestFunc1(s); 1579 StructByValTestFunc2(0, s); 1580} 1581 1582 1583#if MSAN_HAS_M128 1584NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1585NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1586TEST(MemorySanitizer, m128) { 1587 __m128i a = _mm_set1_epi16(0x1234); 1588 __m128i b = _mm_set1_epi16(0x7890); 1589 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1590 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1591} 1592// FIXME: add more tests for __m128i. 1593#endif // MSAN_HAS_M128 1594 1595// We should not complain when copying this poisoned hole. 1596struct StructWithHole { 1597 U4 a; 1598 // 4-byte hole. 1599 U8 b; 1600}; 1601 1602NOINLINE StructWithHole ReturnStructWithHole() { 1603 StructWithHole res; 1604 __msan_poison(&res, sizeof(res)); 1605 res.a = 1; 1606 res.b = 2; 1607 return res; 1608} 1609 1610TEST(MemorySanitizer, StructWithHole) { 1611 StructWithHole a = ReturnStructWithHole(); 1612 break_optimization(&a); 1613} 1614 1615template <class T> 1616NOINLINE T ReturnStruct() { 1617 T res; 1618 __msan_poison(&res, sizeof(res)); 1619 res.a = 1; 1620 return res; 1621} 1622 1623template <class T> 1624NOINLINE void TestReturnStruct() { 1625 T s1 = ReturnStruct<T>(); 1626 EXPECT_NOT_POISONED(s1.a); 1627 EXPECT_POISONED(s1.b); 1628} 1629 1630struct SSS1 { 1631 int a, b, c; 1632}; 1633struct SSS2 { 1634 int b, a, c; 1635}; 1636struct SSS3 { 1637 int b, c, a; 1638}; 1639struct SSS4 { 1640 int c, b, a; 1641}; 1642 1643struct SSS5 { 1644 int a; 1645 float b; 1646}; 1647struct SSS6 { 1648 int a; 1649 double b; 1650}; 1651struct SSS7 { 1652 S8 b; 1653 int a; 1654}; 1655struct SSS8 { 1656 S2 b; 1657 S8 a; 1658}; 1659 1660TEST(MemorySanitizer, IntStruct3) { 1661 TestReturnStruct<SSS1>(); 1662 TestReturnStruct<SSS2>(); 1663 TestReturnStruct<SSS3>(); 1664 TestReturnStruct<SSS4>(); 1665 TestReturnStruct<SSS5>(); 1666 TestReturnStruct<SSS6>(); 1667 TestReturnStruct<SSS7>(); 1668 TestReturnStruct<SSS8>(); 1669} 1670 1671struct LongStruct { 1672 U1 a1, b1; 1673 U2 a2, b2; 1674 U4 a4, b4; 1675 U8 a8, b8; 1676}; 1677 1678NOINLINE LongStruct ReturnLongStruct1() { 1679 LongStruct res; 1680 __msan_poison(&res, sizeof(res)); 1681 res.a1 = res.a2 = res.a4 = res.a8 = 111; 1682 // leaves b1, .., b8 poisoned. 1683 return res; 1684} 1685 1686NOINLINE LongStruct ReturnLongStruct2() { 1687 LongStruct res; 1688 __msan_poison(&res, sizeof(res)); 1689 res.b1 = res.b2 = res.b4 = res.b8 = 111; 1690 // leaves a1, .., a8 poisoned. 1691 return res; 1692} 1693 1694TEST(MemorySanitizer, LongStruct) { 1695 LongStruct s1 = ReturnLongStruct1(); 1696 __msan_print_shadow(&s1, sizeof(s1)); 1697 EXPECT_NOT_POISONED(s1.a1); 1698 EXPECT_NOT_POISONED(s1.a2); 1699 EXPECT_NOT_POISONED(s1.a4); 1700 EXPECT_NOT_POISONED(s1.a8); 1701 1702 EXPECT_POISONED(s1.b1); 1703 EXPECT_POISONED(s1.b2); 1704 EXPECT_POISONED(s1.b4); 1705 EXPECT_POISONED(s1.b8); 1706 1707 LongStruct s2 = ReturnLongStruct2(); 1708 __msan_print_shadow(&s2, sizeof(s2)); 1709 EXPECT_NOT_POISONED(s2.b1); 1710 EXPECT_NOT_POISONED(s2.b2); 1711 EXPECT_NOT_POISONED(s2.b4); 1712 EXPECT_NOT_POISONED(s2.b8); 1713 1714 EXPECT_POISONED(s2.a1); 1715 EXPECT_POISONED(s2.a2); 1716 EXPECT_POISONED(s2.a4); 1717 EXPECT_POISONED(s2.a8); 1718} 1719 1720TEST(MemorySanitizer, getrlimit) { 1721 struct rlimit limit; 1722 __msan_poison(&limit, sizeof(limit)); 1723 int result = getrlimit(RLIMIT_DATA, &limit); 1724 assert(result == 0); 1725 EXPECT_NOT_POISONED(limit.rlim_cur); 1726 EXPECT_NOT_POISONED(limit.rlim_max); 1727} 1728 1729TEST(MemorySanitizer, getrusage) { 1730 struct rusage usage; 1731 __msan_poison(&usage, sizeof(usage)); 1732 int result = getrusage(RUSAGE_SELF, &usage); 1733 assert(result == 0); 1734 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 1735 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 1736 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 1737 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 1738 EXPECT_NOT_POISONED(usage.ru_maxrss); 1739 EXPECT_NOT_POISONED(usage.ru_minflt); 1740 EXPECT_NOT_POISONED(usage.ru_majflt); 1741 EXPECT_NOT_POISONED(usage.ru_inblock); 1742 EXPECT_NOT_POISONED(usage.ru_oublock); 1743 EXPECT_NOT_POISONED(usage.ru_nvcsw); 1744 EXPECT_NOT_POISONED(usage.ru_nivcsw); 1745} 1746 1747#ifdef __GLIBC__ 1748extern char *program_invocation_name; 1749#else // __GLIBC__ 1750# error "TODO: port this" 1751#endif 1752 1753// Compute the path to our loadable DSO. We assume it's in the same 1754// directory. Only use string routines that we intercept so far to do this. 1755static int PathToLoadable(char *buf, size_t sz) { 1756 const char *basename = "libmsan_loadable.x86_64.so"; 1757 char *argv0 = program_invocation_name; 1758 char *last_slash = strrchr(argv0, '/'); 1759 assert(last_slash); 1760 int res = 1761 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 1762 return res < sz ? 0 : res; 1763} 1764 1765static void dladdr_testfn() {} 1766 1767TEST(MemorySanitizer, dladdr) { 1768 Dl_info info; 1769 __msan_poison(&info, sizeof(info)); 1770 int result = dladdr((const void*)dladdr_testfn, &info); 1771 assert(result != 0); 1772 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 1773 if (info.dli_fname) 1774 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 1775 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 1776 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 1777 if (info.dli_sname) 1778 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 1779 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 1780} 1781 1782static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 1783 (*(int *)data)++; 1784 EXPECT_NOT_POISONED(info->dlpi_addr); 1785 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 1786 EXPECT_NOT_POISONED(info->dlpi_phnum); 1787 for (int i = 0; i < info->dlpi_phnum; ++i) 1788 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 1789 return 0; 1790} 1791 1792TEST(MemorySanitizer, dl_iterate_phdr) { 1793 char path[4096]; 1794 int res = PathToLoadable(path, sizeof(path)); 1795 assert(!res); 1796 1797 // Having at least one dlopen'ed library in the process makes this more 1798 // entertaining. 1799 void *lib = dlopen(path, RTLD_LAZY); 1800 ASSERT_NE((void*)0, lib); 1801 1802 int count = 0; 1803 int result = dl_iterate_phdr(dl_phdr_callback, &count); 1804 assert(count > 0); 1805 1806 dlclose(lib); 1807} 1808 1809 1810TEST(MemorySanitizer, dlopen) { 1811 char path[4096]; 1812 int res = PathToLoadable(path, sizeof(path)); 1813 assert(!res); 1814 1815 // We need to clear shadow for globals when doing dlopen. In order to test 1816 // this, we have to poison the shadow for the DSO before we load it. In 1817 // general this is difficult, but the loader tends to reload things in the 1818 // same place, so we open, close, and then reopen. The global should always 1819 // start out clean after dlopen. 1820 for (int i = 0; i < 2; i++) { 1821 void *lib = dlopen(path, RTLD_LAZY); 1822 if (lib == NULL) { 1823 printf("dlerror: %s\n", dlerror()); 1824 assert(lib != NULL); 1825 } 1826 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 1827 assert(get_dso_global); 1828 void **dso_global = get_dso_global(); 1829 EXPECT_NOT_POISONED(*dso_global); 1830 __msan_poison(dso_global, sizeof(*dso_global)); 1831 EXPECT_POISONED(*dso_global); 1832 dlclose(lib); 1833 } 1834} 1835 1836// Regression test for a crash in dlopen() interceptor. 1837TEST(MemorySanitizer, dlopenFailed) { 1838 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 1839 void *lib = dlopen(path, RTLD_LAZY); 1840 ASSERT_EQ(0, lib); 1841} 1842 1843TEST(MemorySanitizer, scanf) { 1844 const char *input = "42 hello"; 1845 int* d = new int; 1846 char* s = new char[7]; 1847 int res = sscanf(input, "%d %5s", d, s); 1848 printf("res %d\n", res); 1849 assert(res == 2); 1850 EXPECT_NOT_POISONED(*d); 1851 EXPECT_NOT_POISONED(s[0]); 1852 EXPECT_NOT_POISONED(s[1]); 1853 EXPECT_NOT_POISONED(s[2]); 1854 EXPECT_NOT_POISONED(s[3]); 1855 EXPECT_NOT_POISONED(s[4]); 1856 EXPECT_NOT_POISONED(s[5]); 1857 EXPECT_POISONED(s[6]); 1858 delete s; 1859 delete d; 1860} 1861 1862static void *SimpleThread_threadfn(void* data) { 1863 return new int; 1864} 1865 1866TEST(MemorySanitizer, SimpleThread) { 1867 pthread_t t; 1868 void *p; 1869 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 1870 assert(!res); 1871 EXPECT_NOT_POISONED(t); 1872 res = pthread_join(t, &p); 1873 assert(!res); 1874 if (!__msan_has_dynamic_component()) // FIXME: intercept pthread_join (?). 1875 __msan_unpoison(&p, sizeof(p)); 1876 delete (int*)p; 1877} 1878 1879static void *SmallStackThread_threadfn(void* data) { 1880 return 0; 1881} 1882 1883TEST(MemorySanitizer, SmallStackThread) { 1884 pthread_attr_t attr; 1885 pthread_t t; 1886 void *p; 1887 int res; 1888 res = pthread_attr_init(&attr); 1889 ASSERT_EQ(0, res); 1890 res = pthread_attr_setstacksize(&attr, 64 * 1024); 1891 ASSERT_EQ(0, res); 1892 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 1893 ASSERT_EQ(0, res); 1894 res = pthread_join(t, &p); 1895 ASSERT_EQ(0, res); 1896 res = pthread_attr_destroy(&attr); 1897 ASSERT_EQ(0, res); 1898} 1899 1900TEST(MemorySanitizer, PreAllocatedStackThread) { 1901 pthread_attr_t attr; 1902 pthread_t t; 1903 int res; 1904 res = pthread_attr_init(&attr); 1905 ASSERT_EQ(0, res); 1906 void *stack; 1907 const size_t kStackSize = 64 * 1024; 1908 res = posix_memalign(&stack, 4096, kStackSize); 1909 ASSERT_EQ(0, res); 1910 res = pthread_attr_setstack(&attr, stack, kStackSize); 1911 ASSERT_EQ(0, res); 1912 // A small self-allocated stack can not be extended by the tool. 1913 // In this case pthread_create is expected to fail. 1914 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 1915 EXPECT_NE(0, res); 1916 res = pthread_attr_destroy(&attr); 1917 ASSERT_EQ(0, res); 1918} 1919 1920TEST(MemorySanitizer, pthread_getschedparam) { 1921 int policy; 1922 struct sched_param param; 1923 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 1924 ASSERT_EQ(0, res); 1925 EXPECT_NOT_POISONED(policy); 1926 EXPECT_NOT_POISONED(param.sched_priority); 1927} 1928 1929TEST(MemorySanitizer, posix_memalign) { 1930 void *p; 1931 EXPECT_POISONED(p); 1932 int res = posix_memalign(&p, 4096, 13); 1933 ASSERT_EQ(0, res); 1934 EXPECT_NOT_POISONED(p); 1935 free(p); 1936} 1937 1938TEST(MemorySanitizer, inet_pton) { 1939 const char *s = "1:0:0:0:0:0:0:8"; 1940 unsigned char buf[sizeof(struct in6_addr)]; 1941 int res = inet_pton(AF_INET6, s, buf); 1942 ASSERT_EQ(1, res); 1943 EXPECT_NOT_POISONED(buf[0]); 1944 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 1945 1946 char s_out[INET6_ADDRSTRLEN]; 1947 EXPECT_POISONED(s_out[3]); 1948 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 1949 ASSERT_NE((void*)0, q); 1950 EXPECT_NOT_POISONED(s_out[3]); 1951} 1952 1953TEST(MemorySanitizer, inet_aton) { 1954 const char *s = "127.0.0.1"; 1955 struct in_addr in[2]; 1956 int res = inet_aton(s, in); 1957 ASSERT_NE(0, res); 1958 EXPECT_NOT_POISONED(in[0]); 1959 EXPECT_POISONED(*(char *)(in + 1)); 1960} 1961 1962TEST(MemorySanitizer, uname) { 1963 struct utsname u; 1964 int res = uname(&u); 1965 assert(!res); 1966 EXPECT_NOT_POISONED(strlen(u.sysname)); 1967 EXPECT_NOT_POISONED(strlen(u.nodename)); 1968 EXPECT_NOT_POISONED(strlen(u.release)); 1969 EXPECT_NOT_POISONED(strlen(u.version)); 1970 EXPECT_NOT_POISONED(strlen(u.machine)); 1971} 1972 1973TEST(MemorySanitizer, gethostname) { 1974 char buf[100]; 1975 int res = gethostname(buf, 100); 1976 assert(!res); 1977 EXPECT_NOT_POISONED(strlen(buf)); 1978} 1979 1980TEST(MemorySanitizer, getpwuid) { 1981 struct passwd *p = getpwuid(0); // root 1982 assert(p); 1983 EXPECT_NOT_POISONED(p->pw_name); 1984 assert(p->pw_name); 1985 EXPECT_NOT_POISONED(p->pw_name[0]); 1986 EXPECT_NOT_POISONED(p->pw_uid); 1987 assert(p->pw_uid == 0); 1988} 1989 1990TEST(MemorySanitizer, getpwnam_r) { 1991 struct passwd pwd; 1992 struct passwd *pwdres; 1993 char buf[10000]; 1994 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 1995 assert(!res); 1996 EXPECT_NOT_POISONED(pwd.pw_name); 1997 assert(pwd.pw_name); 1998 EXPECT_NOT_POISONED(pwd.pw_name[0]); 1999 EXPECT_NOT_POISONED(pwd.pw_uid); 2000 assert(pwd.pw_uid == 0); 2001} 2002 2003TEST(MemorySanitizer, getpwnam_r_positive) { 2004 struct passwd pwd; 2005 struct passwd *pwdres; 2006 char s[5]; 2007 strncpy(s, "abcd", 5); 2008 __msan_poison(s, 5); 2009 char buf[10000]; 2010 int res; 2011 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2012} 2013 2014TEST(MemorySanitizer, getgrnam_r) { 2015 struct group grp; 2016 struct group *grpres; 2017 char buf[10000]; 2018 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2019 assert(!res); 2020 EXPECT_NOT_POISONED(grp.gr_name); 2021 assert(grp.gr_name); 2022 EXPECT_NOT_POISONED(grp.gr_name[0]); 2023 EXPECT_NOT_POISONED(grp.gr_gid); 2024} 2025 2026template<class T> 2027static bool applySlt(T value, T shadow) { 2028 __msan_partial_poison(&value, &shadow, sizeof(T)); 2029 volatile bool zzz = true; 2030 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2031 // a shift-and-trunc to get at the highest bit. 2032 volatile bool v = value < 0 || zzz; 2033 return v; 2034} 2035 2036TEST(MemorySanitizer, SignedCompareWithZero) { 2037 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2038 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2039 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2040 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2041 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2042 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2043} 2044 2045template <class T, class S> 2046static T poisoned(T Va, S Sa) { 2047 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2048 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2049 T a; 2050 a = Va; 2051 __msan_partial_poison(&a, &Sa, sizeof(T)); 2052 return a; 2053} 2054 2055TEST(MemorySanitizer, ICmpRelational) { 2056 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2057 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2058 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2059 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2060 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2061 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2062 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2063 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2064 poisoned(-1, 0xFFFFFFFFU)); 2065 2066 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2067 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2068 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2069 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2070 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2071 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2072 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2073 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2074 poisoned(-1, 0xFFFFFFFFU)); 2075 2076 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2077 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2078 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2079 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2080 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2081 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2082 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2083 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2084 poisoned(-1, 0xFFFFFFFFU)); 2085 2086 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2087 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2088 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2089 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2090 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2091 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2092 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2093 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2094 poisoned(-1, 0xFFFFFFFFU)); 2095 2096 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2097 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2098 2099 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2100} 2101 2102#if MSAN_HAS_M128 2103TEST(MemorySanitizer, ICmpVectorRelational) { 2104 EXPECT_NOT_POISONED( 2105 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2106 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2107 EXPECT_NOT_POISONED( 2108 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2109 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2110 EXPECT_POISONED( 2111 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2112 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2113 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2114 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2115} 2116#endif 2117 2118// Volatile bitfield store is implemented as load-mask-store 2119// Test that we don't warn on the store of (uninitialized) padding. 2120struct VolatileBitfieldStruct { 2121 volatile unsigned x : 1; 2122 unsigned y : 1; 2123}; 2124 2125TEST(MemorySanitizer, VolatileBitfield) { 2126 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2127 S->x = 1; 2128 EXPECT_NOT_POISONED((unsigned)S->x); 2129 EXPECT_POISONED((unsigned)S->y); 2130} 2131 2132TEST(MemorySanitizer, UnalignedLoad) { 2133 char x[32]; 2134 memset(x + 8, 0, 16); 2135 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2136 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2137 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2138 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2139 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2140 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2141 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2142 2143 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2144 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2145 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2146 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2147 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2148 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2149 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2150 2151 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2152 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2153 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2154 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2155 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2156 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2157 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2158 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2159 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2160} 2161 2162TEST(MemorySanitizer, UnalignedStore16) { 2163 char x[5]; 2164 U2 y = 0; 2165 __msan_poison(&y, 1); 2166 __sanitizer_unaligned_store16(x + 1, y); 2167 EXPECT_POISONED(x[0]); 2168 EXPECT_POISONED(x[1]); 2169 EXPECT_NOT_POISONED(x[2]); 2170 EXPECT_POISONED(x[3]); 2171 EXPECT_POISONED(x[4]); 2172} 2173 2174TEST(MemorySanitizer, UnalignedStore32) { 2175 char x[8]; 2176 U4 y4 = 0; 2177 __msan_poison(&y4, 2); 2178 __sanitizer_unaligned_store32(x+3, y4); 2179 EXPECT_POISONED(x[0]); 2180 EXPECT_POISONED(x[1]); 2181 EXPECT_POISONED(x[2]); 2182 EXPECT_POISONED(x[3]); 2183 EXPECT_POISONED(x[4]); 2184 EXPECT_NOT_POISONED(x[5]); 2185 EXPECT_NOT_POISONED(x[6]); 2186 EXPECT_POISONED(x[7]); 2187} 2188 2189TEST(MemorySanitizer, UnalignedStore64) { 2190 char x[16]; 2191 U8 y = 0; 2192 __msan_poison(&y, 3); 2193 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2194 __sanitizer_unaligned_store64(x+3, y); 2195 EXPECT_POISONED(x[0]); 2196 EXPECT_POISONED(x[1]); 2197 EXPECT_POISONED(x[2]); 2198 EXPECT_POISONED(x[3]); 2199 EXPECT_POISONED(x[4]); 2200 EXPECT_POISONED(x[5]); 2201 EXPECT_NOT_POISONED(x[6]); 2202 EXPECT_NOT_POISONED(x[7]); 2203 EXPECT_NOT_POISONED(x[8]); 2204 EXPECT_POISONED(x[9]); 2205 EXPECT_NOT_POISONED(x[10]); 2206 EXPECT_POISONED(x[11]); 2207} 2208 2209TEST(MemorySanitizerDr, StoreInDSOTest) { 2210 if (!__msan_has_dynamic_component()) return; 2211 char* s = new char[10]; 2212 dso_memfill(s, 9); 2213 EXPECT_NOT_POISONED(s[5]); 2214 EXPECT_POISONED(s[9]); 2215} 2216 2217int return_poisoned_int() { 2218 return ReturnPoisoned<U8>(); 2219} 2220 2221TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2222 if (!__msan_has_dynamic_component()) return; 2223 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2224} 2225 2226NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2227 EXPECT_POISONED(x); 2228 EXPECT_POISONED(y); 2229 EXPECT_POISONED(z); 2230 return 0; 2231} 2232 2233static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2234 EXPECT_NOT_POISONED(x); 2235 EXPECT_NOT_POISONED(y); 2236 EXPECT_NOT_POISONED(z); 2237 return 0; 2238} 2239 2240TEST(MemorySanitizerDr, CallFromDSOTest) { 2241 if (!__msan_has_dynamic_component()) return; 2242 S8* x = GetPoisoned<S8>(); 2243 S8* y = GetPoisoned<S8>(); 2244 S8* z = GetPoisoned<S8>(); 2245 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2246 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2247} 2248 2249static void StackStoreInDSOFn(int* x, int* y) { 2250 EXPECT_NOT_POISONED(*x); 2251 EXPECT_NOT_POISONED(*y); 2252} 2253 2254TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2255 if (!__msan_has_dynamic_component()) return; 2256 dso_stack_store(StackStoreInDSOFn, 1); 2257} 2258 2259TEST(MemorySanitizerOrigins, SetGet) { 2260 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2261 if (!TrackingOrigins()) return; 2262 int x; 2263 __msan_set_origin(&x, sizeof(x), 1234); 2264 EXPECT_EQ(1234, __msan_get_origin(&x)); 2265 __msan_set_origin(&x, sizeof(x), 5678); 2266 EXPECT_EQ(5678, __msan_get_origin(&x)); 2267 __msan_set_origin(&x, sizeof(x), 0); 2268 EXPECT_EQ(0, __msan_get_origin(&x)); 2269} 2270 2271namespace { 2272struct S { 2273 U4 dummy; 2274 U2 a; 2275 U2 b; 2276}; 2277 2278// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2279TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2280 if (!TrackingOrigins()) return; 2281 2282 S s; 2283 U4 origin = rand(); // NOLINT 2284 s.a = *GetPoisonedO<U2>(0, origin); 2285 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2286 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2287 2288 s.b = 42; 2289 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2290 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2291} 2292} // namespace 2293 2294template<class T, class BinaryOp> 2295INLINE 2296void BinaryOpOriginTest(BinaryOp op) { 2297 U4 ox = rand(); //NOLINT 2298 U4 oy = rand(); //NOLINT 2299 T *x = GetPoisonedO<T>(0, ox, 0); 2300 T *y = GetPoisonedO<T>(1, oy, 0); 2301 T *z = GetPoisonedO<T>(2, 0, 0); 2302 2303 *z = op(*x, *y); 2304 U4 origin = __msan_get_origin(z); 2305 EXPECT_POISONED_O(*z, origin); 2306 EXPECT_EQ(true, origin == ox || origin == oy); 2307 2308 // y is poisoned, x is not. 2309 *x = 10101; 2310 *y = *GetPoisonedO<T>(1, oy); 2311 break_optimization(x); 2312 __msan_set_origin(z, sizeof(*z), 0); 2313 *z = op(*x, *y); 2314 EXPECT_POISONED_O(*z, oy); 2315 EXPECT_EQ(__msan_get_origin(z), oy); 2316 2317 // x is poisoned, y is not. 2318 *x = *GetPoisonedO<T>(0, ox); 2319 *y = 10101010; 2320 break_optimization(y); 2321 __msan_set_origin(z, sizeof(*z), 0); 2322 *z = op(*x, *y); 2323 EXPECT_POISONED_O(*z, ox); 2324 EXPECT_EQ(__msan_get_origin(z), ox); 2325} 2326 2327template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2328template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2329template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2330template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2331template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2332template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2333 2334TEST(MemorySanitizerOrigins, BinaryOp) { 2335 if (!TrackingOrigins()) return; 2336 BinaryOpOriginTest<S8>(XOR<S8>); 2337 BinaryOpOriginTest<U8>(ADD<U8>); 2338 BinaryOpOriginTest<S4>(SUB<S4>); 2339 BinaryOpOriginTest<S4>(MUL<S4>); 2340 BinaryOpOriginTest<U4>(OR<U4>); 2341 BinaryOpOriginTest<U4>(AND<U4>); 2342 BinaryOpOriginTest<double>(ADD<U4>); 2343 BinaryOpOriginTest<float>(ADD<S4>); 2344 BinaryOpOriginTest<double>(ADD<double>); 2345 BinaryOpOriginTest<float>(ADD<double>); 2346} 2347 2348TEST(MemorySanitizerOrigins, Unary) { 2349 if (!TrackingOrigins()) return; 2350 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2351 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2352 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2353 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2354 2355 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2356 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2357 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2358 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2359 2360 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2361 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2362 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2363 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2364 2365 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2366 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2367 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2368 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2369 2370 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2371 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2372} 2373 2374TEST(MemorySanitizerOrigins, EQ) { 2375 if (!TrackingOrigins()) return; 2376 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2377 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2378 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2379} 2380 2381TEST(MemorySanitizerOrigins, DIV) { 2382 if (!TrackingOrigins()) return; 2383 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2384 unsigned o = __LINE__; 2385 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2386} 2387 2388TEST(MemorySanitizerOrigins, SHIFT) { 2389 if (!TrackingOrigins()) return; 2390 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2391 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2392 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2393 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2394 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2395 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2396} 2397 2398template<class T, int N> 2399void MemCpyTest() { 2400 int ox = __LINE__; 2401 T *x = new T[N]; 2402 T *y = new T[N]; 2403 T *z = new T[N]; 2404 __msan_poison(x, N * sizeof(T)); 2405 __msan_set_origin(x, N * sizeof(T), ox); 2406 __msan_set_origin(y, N * sizeof(T), 777777); 2407 __msan_set_origin(z, N * sizeof(T), 888888); 2408 EXPECT_NOT_POISONED(x); 2409 memcpy(y, x, N * sizeof(T)); 2410 EXPECT_POISONED_O(y[0], ox); 2411 EXPECT_POISONED_O(y[N/2], ox); 2412 EXPECT_POISONED_O(y[N-1], ox); 2413 EXPECT_NOT_POISONED(x); 2414 memmove(z, x, N * sizeof(T)); 2415 EXPECT_POISONED_O(z[0], ox); 2416 EXPECT_POISONED_O(z[N/2], ox); 2417 EXPECT_POISONED_O(z[N-1], ox); 2418} 2419 2420TEST(MemorySanitizerOrigins, LargeMemCpy) { 2421 if (!TrackingOrigins()) return; 2422 MemCpyTest<U1, 10000>(); 2423 MemCpyTest<U8, 10000>(); 2424} 2425 2426TEST(MemorySanitizerOrigins, SmallMemCpy) { 2427 if (!TrackingOrigins()) return; 2428 MemCpyTest<U8, 1>(); 2429 MemCpyTest<U8, 2>(); 2430 MemCpyTest<U8, 3>(); 2431} 2432 2433TEST(MemorySanitizerOrigins, Select) { 2434 if (!TrackingOrigins()) return; 2435 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2436 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2437 S4 x; 2438 break_optimization(&x); 2439 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2440 2441 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2442 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2443} 2444 2445extern "C" 2446NOINLINE char AllocaTO() { 2447 int ar[100]; 2448 break_optimization(ar); 2449 return ar[10]; 2450 // fprintf(stderr, "Descr: %s\n", 2451 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2452} 2453 2454TEST(MemorySanitizerOrigins, Alloca) { 2455 if (!TrackingOrigins()) return; 2456 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2457 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2458 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2459 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2460} 2461 2462// FIXME: replace with a lit-like test. 2463TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2464 if (!TrackingOrigins()) return; 2465 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2466} 2467 2468NOINLINE int RetvalOriginTest(U4 origin) { 2469 int *a = new int; 2470 break_optimization(a); 2471 __msan_set_origin(a, sizeof(*a), origin); 2472 int res = *a; 2473 delete a; 2474 return res; 2475} 2476 2477TEST(MemorySanitizerOrigins, Retval) { 2478 if (!TrackingOrigins()) return; 2479 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2480} 2481 2482NOINLINE void ParamOriginTest(int param, U4 origin) { 2483 EXPECT_POISONED_O(param, origin); 2484} 2485 2486TEST(MemorySanitizerOrigins, Param) { 2487 if (!TrackingOrigins()) return; 2488 int *a = new int; 2489 U4 origin = __LINE__; 2490 break_optimization(a); 2491 __msan_set_origin(a, sizeof(*a), origin); 2492 ParamOriginTest(*a, origin); 2493 delete a; 2494} 2495 2496TEST(MemorySanitizerOrigins, Invoke) { 2497 if (!TrackingOrigins()) return; 2498 StructWithDtor s; // Will cause the calls to become invokes. 2499 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2500} 2501 2502TEST(MemorySanitizerOrigins, strlen) { 2503 S8 alignment; 2504 break_optimization(&alignment); 2505 char x[4] = {'a', 'b', 0, 0}; 2506 __msan_poison(&x[2], 1); 2507 U4 origin = __LINE__; 2508 __msan_set_origin(x, sizeof(x), origin); 2509 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2510} 2511 2512TEST(MemorySanitizerOrigins, wcslen) { 2513 wchar_t w[3] = {'a', 'b', 0}; 2514 U4 origin = __LINE__; 2515 __msan_set_origin(w, sizeof(w), origin); 2516 __msan_poison(&w[2], sizeof(wchar_t)); 2517 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 2518} 2519 2520#if MSAN_HAS_M128 2521TEST(MemorySanitizerOrigins, StoreIntrinsic) { 2522 __m128 x, y; 2523 U4 origin = __LINE__; 2524 __msan_set_origin(&x, sizeof(x), origin); 2525 __msan_poison(&x, sizeof(x)); 2526 __builtin_ia32_storeups((float*)&y, x); 2527 EXPECT_POISONED_O(y, origin); 2528} 2529#endif 2530 2531NOINLINE void RecursiveMalloc(int depth) { 2532 static int count; 2533 count++; 2534 if ((count % (1024 * 1024)) == 0) 2535 printf("RecursiveMalloc: %d\n", count); 2536 int *x1 = new int; 2537 int *x2 = new int; 2538 break_optimization(x1); 2539 break_optimization(x2); 2540 if (depth > 0) { 2541 RecursiveMalloc(depth-1); 2542 RecursiveMalloc(depth-1); 2543 } 2544 delete x1; 2545 delete x2; 2546} 2547 2548TEST(MemorySanitizer, CallocOverflow) { 2549 size_t kArraySize = 4096; 2550 volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 2551 volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 2552 void *p = calloc(kArraySize, kArraySize2); // Should return 0. 2553 EXPECT_EQ(0L, Ident(p)); 2554} 2555 2556TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 2557 RecursiveMalloc(22); 2558} 2559