msan_test.cc revision 57a1095fca7b95db8a0ec87fce7a6f0e331a5b99
1//===-- msan_test.cc ------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of MemorySanitizer. 11// 12// MemorySanitizer unit tests. 13//===----------------------------------------------------------------------===// 14 15#ifndef MSAN_EXTERNAL_TEST_CONFIG 16#include "msan_test_config.h" 17#endif // MSAN_EXTERNAL_TEST_CONFIG 18 19#include "sanitizer/msan_interface.h" 20#include "msandr_test_so.h" 21 22#include <inttypes.h> 23#include <stdlib.h> 24#include <stdarg.h> 25#include <stdio.h> 26#include <assert.h> 27#include <wchar.h> 28#include <math.h> 29 30#include <arpa/inet.h> 31#include <dlfcn.h> 32#include <grp.h> 33#include <unistd.h> 34#include <link.h> 35#include <limits.h> 36#include <sys/time.h> 37#include <sys/types.h> 38#include <sys/stat.h> 39#include <fcntl.h> 40#include <sys/resource.h> 41#include <sys/ioctl.h> 42#include <sys/sysinfo.h> 43#include <sys/utsname.h> 44#include <sys/mman.h> 45#include <sys/vfs.h> 46#include <dirent.h> 47#include <pwd.h> 48#include <sys/socket.h> 49#include <netdb.h> 50 51#if defined(__i386__) || defined(__x86_64__) 52# include <emmintrin.h> 53# define MSAN_HAS_M128 1 54#else 55# define MSAN_HAS_M128 0 56#endif 57 58typedef unsigned char U1; 59typedef unsigned short U2; // NOLINT 60typedef unsigned int U4; 61typedef unsigned long long U8; // NOLINT 62typedef signed char S1; 63typedef signed short S2; // NOLINT 64typedef signed int S4; 65typedef signed long long S8; // NOLINT 66#define NOINLINE __attribute__((noinline)) 67#define INLINE __attribute__((always_inline)) 68 69static bool TrackingOrigins() { 70 S8 x; 71 __msan_set_origin(&x, sizeof(x), 0x1234); 72 U4 origin = __msan_get_origin(&x); 73 __msan_set_origin(&x, sizeof(x), 0); 74 return origin == 0x1234; 75} 76 77#define EXPECT_UMR(action) \ 78 do { \ 79 __msan_set_expect_umr(1); \ 80 action; \ 81 __msan_set_expect_umr(0); \ 82 } while (0) 83 84#define EXPECT_UMR_O(action, origin) \ 85 do { \ 86 __msan_set_expect_umr(1); \ 87 action; \ 88 __msan_set_expect_umr(0); \ 89 if (TrackingOrigins()) \ 90 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 91 } while (0) 92 93#define EXPECT_UMR_S(action, stack_origin) \ 94 do { \ 95 __msan_set_expect_umr(1); \ 96 action; \ 97 __msan_set_expect_umr(0); \ 98 U4 id = __msan_get_umr_origin(); \ 99 const char *str = __msan_get_origin_descr_if_stack(id); \ 100 if (!str || strcmp(str, stack_origin)) { \ 101 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 102 id, stack_origin, str); \ 103 EXPECT_EQ(1, 0); \ 104 } \ 105 } while (0) 106 107#define EXPECT_POISONED(x) ExpectPoisoned(x) 108 109template<typename T> 110void ExpectPoisoned(const T& t) { 111 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 112} 113 114#define EXPECT_POISONED_O(x, origin) \ 115 ExpectPoisonedWithOrigin(x, origin) 116 117template<typename T> 118void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 119 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 120 if (TrackingOrigins()) 121 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 122} 123 124#define EXPECT_POISONED_S(x, stack_origin) \ 125 ExpectPoisonedWithStackOrigin(x, stack_origin) 126 127template<typename T> 128void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 129 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 130 U4 id = __msan_get_origin((void*)&t); 131 const char *str = __msan_get_origin_descr_if_stack(id); 132 if (!str || strcmp(str, stack_origin)) { 133 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 134 id, stack_origin, str); 135 EXPECT_EQ(1, 0); 136 } 137} 138 139#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 140 141template<typename T> 142void ExpectNotPoisoned(const T& t) { 143 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 144} 145 146static U8 poisoned_array[100]; 147template<class T> 148T *GetPoisoned(int i = 0, T val = 0) { 149 T *res = (T*)&poisoned_array[i]; 150 *res = val; 151 __msan_poison(&poisoned_array[i], sizeof(T)); 152 return res; 153} 154 155template<class T> 156T *GetPoisonedO(int i, U4 origin, T val = 0) { 157 T *res = (T*)&poisoned_array[i]; 158 *res = val; 159 __msan_poison(&poisoned_array[i], sizeof(T)); 160 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 161 return res; 162} 163 164// This function returns its parameter but in such a way that compiler 165// can not prove it. 166template<class T> 167NOINLINE 168static T Ident(T t) { 169 volatile T ret = t; 170 return ret; 171} 172 173template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 174 175static volatile int g_one = 1; 176static volatile int g_zero = 0; 177static volatile int g_0 = 0; 178static volatile int g_1 = 1; 179 180S4 a_s4[100]; 181S8 a_s8[100]; 182 183// Check that malloc poisons memory. 184// A lot of tests below depend on this. 185TEST(MemorySanitizerSanity, PoisonInMalloc) { 186 int *x = (int*)malloc(sizeof(int)); 187 EXPECT_POISONED(*x); 188 free(x); 189} 190 191TEST(MemorySanitizer, NegativeTest1) { 192 S4 *x = GetPoisoned<S4>(); 193 if (g_one) 194 *x = 0; 195 EXPECT_NOT_POISONED(*x); 196} 197 198TEST(MemorySanitizer, PositiveTest1) { 199 // Load to store. 200 EXPECT_POISONED(*GetPoisoned<S1>()); 201 EXPECT_POISONED(*GetPoisoned<S2>()); 202 EXPECT_POISONED(*GetPoisoned<S4>()); 203 EXPECT_POISONED(*GetPoisoned<S8>()); 204 205 // S->S conversions. 206 EXPECT_POISONED(*GetPoisoned<S1>()); 207 EXPECT_POISONED(*GetPoisoned<S1>()); 208 EXPECT_POISONED(*GetPoisoned<S1>()); 209 210 EXPECT_POISONED(*GetPoisoned<S2>()); 211 EXPECT_POISONED(*GetPoisoned<S2>()); 212 EXPECT_POISONED(*GetPoisoned<S2>()); 213 214 EXPECT_POISONED(*GetPoisoned<S4>()); 215 EXPECT_POISONED(*GetPoisoned<S4>()); 216 EXPECT_POISONED(*GetPoisoned<S4>()); 217 218 EXPECT_POISONED(*GetPoisoned<S8>()); 219 EXPECT_POISONED(*GetPoisoned<S8>()); 220 EXPECT_POISONED(*GetPoisoned<S8>()); 221 222 // ZExt 223 EXPECT_POISONED(*GetPoisoned<U1>()); 224 EXPECT_POISONED(*GetPoisoned<U1>()); 225 EXPECT_POISONED(*GetPoisoned<U1>()); 226 EXPECT_POISONED(*GetPoisoned<U2>()); 227 EXPECT_POISONED(*GetPoisoned<U2>()); 228 EXPECT_POISONED(*GetPoisoned<U4>()); 229 230 // Unary ops. 231 EXPECT_POISONED(- *GetPoisoned<S4>()); 232 233 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 234 235 236 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 237 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 238} 239 240TEST(MemorySanitizer, Phi1) { 241 S4 c; 242 if (g_one) { 243 c = *GetPoisoned<S4>(); 244 } else { 245 break_optimization(0); 246 c = 0; 247 } 248 EXPECT_POISONED(c); 249} 250 251TEST(MemorySanitizer, Phi2) { 252 S4 i = *GetPoisoned<S4>(); 253 S4 n = g_one; 254 EXPECT_UMR(for (; i < g_one; i++);); 255 EXPECT_POISONED(i); 256} 257 258NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 259NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 260NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 261 262TEST(MemorySanitizer, ArgTest) { 263 Arg1ExpectUMR(*GetPoisoned<S4>()); 264 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 265 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 266} 267 268 269TEST(MemorySanitizer, CallAndRet) { 270 if (!__msan_has_dynamic_component()) return; 271 ReturnPoisoned<S1>(); 272 ReturnPoisoned<S2>(); 273 ReturnPoisoned<S4>(); 274 ReturnPoisoned<S8>(); 275 276 EXPECT_POISONED(ReturnPoisoned<S1>()); 277 EXPECT_POISONED(ReturnPoisoned<S2>()); 278 EXPECT_POISONED(ReturnPoisoned<S4>()); 279 EXPECT_POISONED(ReturnPoisoned<S8>()); 280} 281 282// malloc() in the following test may be optimized to produce a compile-time 283// undef value. Check that we trap on the volatile assignment anyway. 284TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 285 S4 *x = (int*)malloc(sizeof(S4)); 286 EXPECT_POISONED(*x); 287 free(x); 288} 289 290TEST(MemorySanitizer, Malloc) { 291 S4 *x = (int*)Ident(malloc(sizeof(S4))); 292 EXPECT_POISONED(*x); 293 free(x); 294} 295 296TEST(MemorySanitizer, Realloc) { 297 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 298 EXPECT_POISONED(x[0]); 299 x[0] = 1; 300 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 301 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 302 EXPECT_POISONED(x[1]); 303 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 304 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 305 EXPECT_POISONED(x[2]); 306 EXPECT_POISONED(x[1]); 307 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 308 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 309 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 310 EXPECT_POISONED(x[1]); 311 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 312 EXPECT_POISONED(x[1]); 313 EXPECT_POISONED(x[2]); 314 free(x); 315} 316 317TEST(MemorySanitizer, Calloc) { 318 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 319 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 320 // EXPECT_EQ(0, *x); 321 free(x); 322} 323 324TEST(MemorySanitizer, AndOr) { 325 U4 *p = GetPoisoned<U4>(); 326 // We poison two bytes in the midle of a 4-byte word to make the test 327 // correct regardless of endianness. 328 ((U1*)p)[1] = 0; 329 ((U1*)p)[2] = 0xff; 330 EXPECT_NOT_POISONED(*p & 0x00ffff00); 331 EXPECT_NOT_POISONED(*p & 0x00ff0000); 332 EXPECT_NOT_POISONED(*p & 0x0000ff00); 333 EXPECT_POISONED(*p & 0xff000000); 334 EXPECT_POISONED(*p & 0x000000ff); 335 EXPECT_POISONED(*p & 0x0000ffff); 336 EXPECT_POISONED(*p & 0xffff0000); 337 338 EXPECT_NOT_POISONED(*p | 0xff0000ff); 339 EXPECT_NOT_POISONED(*p | 0xff00ffff); 340 EXPECT_NOT_POISONED(*p | 0xffff00ff); 341 EXPECT_POISONED(*p | 0xff000000); 342 EXPECT_POISONED(*p | 0x000000ff); 343 EXPECT_POISONED(*p | 0x0000ffff); 344 EXPECT_POISONED(*p | 0xffff0000); 345 346 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 347} 348 349template<class T> 350static bool applyNot(T value, T shadow) { 351 __msan_partial_poison(&value, &shadow, sizeof(T)); 352 return !value; 353} 354 355TEST(MemorySanitizer, Not) { 356 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 357 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 358 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 359 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 360 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 361 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 362 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 363 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 364 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 365 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 366 367 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 368 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 369 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 370 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 371 372 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 373 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 374} 375 376TEST(MemorySanitizer, Shift) { 377 U4 *up = GetPoisoned<U4>(); 378 ((U1*)up)[0] = 0; 379 ((U1*)up)[3] = 0xff; 380 EXPECT_NOT_POISONED(*up >> 30); 381 EXPECT_NOT_POISONED(*up >> 24); 382 EXPECT_POISONED(*up >> 23); 383 EXPECT_POISONED(*up >> 10); 384 385 EXPECT_NOT_POISONED(*up << 30); 386 EXPECT_NOT_POISONED(*up << 24); 387 EXPECT_POISONED(*up << 23); 388 EXPECT_POISONED(*up << 10); 389 390 S4 *sp = (S4*)up; 391 EXPECT_NOT_POISONED(*sp >> 30); 392 EXPECT_NOT_POISONED(*sp >> 24); 393 EXPECT_POISONED(*sp >> 23); 394 EXPECT_POISONED(*sp >> 10); 395 396 sp = GetPoisoned<S4>(); 397 ((S1*)sp)[1] = 0; 398 ((S1*)sp)[2] = 0; 399 EXPECT_POISONED(*sp >> 31); 400 401 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 402 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 403} 404 405NOINLINE static int GetPoisonedZero() { 406 int *zero = new int; 407 *zero = 0; 408 __msan_poison(zero, sizeof(*zero)); 409 int res = *zero; 410 delete zero; 411 return res; 412} 413 414TEST(MemorySanitizer, LoadFromDirtyAddress) { 415 int *a = new int; 416 *a = 0; 417 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 418 delete a; 419} 420 421TEST(MemorySanitizer, StoreToDirtyAddress) { 422 int *a = new int; 423 EXPECT_UMR(a[GetPoisonedZero()] = 0); 424 break_optimization(a); 425 delete a; 426} 427 428 429NOINLINE void StackTestFunc() { 430 S4 p4; 431 S4 ok4 = 1; 432 S2 p2; 433 S2 ok2 = 1; 434 S1 p1; 435 S1 ok1 = 1; 436 break_optimization(&p4); 437 break_optimization(&ok4); 438 break_optimization(&p2); 439 break_optimization(&ok2); 440 break_optimization(&p1); 441 break_optimization(&ok1); 442 443 EXPECT_POISONED(p4); 444 EXPECT_POISONED(p2); 445 EXPECT_POISONED(p1); 446 EXPECT_NOT_POISONED(ok1); 447 EXPECT_NOT_POISONED(ok2); 448 EXPECT_NOT_POISONED(ok4); 449} 450 451TEST(MemorySanitizer, StackTest) { 452 StackTestFunc(); 453} 454 455NOINLINE void StackStressFunc() { 456 int foo[10000]; 457 break_optimization(foo); 458} 459 460TEST(MemorySanitizer, DISABLED_StackStressTest) { 461 for (int i = 0; i < 1000000; i++) 462 StackStressFunc(); 463} 464 465template<class T> 466void TestFloatingPoint() { 467 static volatile T v; 468 static T g[100]; 469 break_optimization(&g); 470 T *x = GetPoisoned<T>(); 471 T *y = GetPoisoned<T>(1); 472 EXPECT_POISONED(*x); 473 EXPECT_POISONED((long long)*x); 474 EXPECT_POISONED((int)*x); 475 g[0] = *x; 476 g[1] = *x + *y; 477 g[2] = *x - *y; 478 g[3] = *x * *y; 479} 480 481TEST(MemorySanitizer, FloatingPointTest) { 482 TestFloatingPoint<float>(); 483 TestFloatingPoint<double>(); 484} 485 486TEST(MemorySanitizer, DynMem) { 487 S4 x = 0; 488 S4 *y = GetPoisoned<S4>(); 489 memcpy(y, &x, g_one * sizeof(S4)); 490 EXPECT_NOT_POISONED(*y); 491} 492 493static char *DynRetTestStr; 494 495TEST(MemorySanitizer, DynRet) { 496 if (!__msan_has_dynamic_component()) return; 497 ReturnPoisoned<S8>(); 498 EXPECT_NOT_POISONED(clearenv()); 499} 500 501 502TEST(MemorySanitizer, DynRet1) { 503 if (!__msan_has_dynamic_component()) return; 504 ReturnPoisoned<S8>(); 505} 506 507struct LargeStruct { 508 S4 x[10]; 509}; 510 511NOINLINE 512LargeStruct LargeRetTest() { 513 LargeStruct res; 514 res.x[0] = *GetPoisoned<S4>(); 515 res.x[1] = *GetPoisoned<S4>(); 516 res.x[2] = *GetPoisoned<S4>(); 517 res.x[3] = *GetPoisoned<S4>(); 518 res.x[4] = *GetPoisoned<S4>(); 519 res.x[5] = *GetPoisoned<S4>(); 520 res.x[6] = *GetPoisoned<S4>(); 521 res.x[7] = *GetPoisoned<S4>(); 522 res.x[8] = *GetPoisoned<S4>(); 523 res.x[9] = *GetPoisoned<S4>(); 524 return res; 525} 526 527TEST(MemorySanitizer, LargeRet) { 528 LargeStruct a = LargeRetTest(); 529 EXPECT_POISONED(a.x[0]); 530 EXPECT_POISONED(a.x[9]); 531} 532 533TEST(MemorySanitizer, fread) { 534 char *x = new char[32]; 535 FILE *f = fopen("/proc/self/stat", "r"); 536 assert(f); 537 fread(x, 1, 32, f); 538 EXPECT_NOT_POISONED(x[0]); 539 EXPECT_NOT_POISONED(x[16]); 540 EXPECT_NOT_POISONED(x[31]); 541 fclose(f); 542 delete x; 543} 544 545TEST(MemorySanitizer, read) { 546 char *x = new char[32]; 547 int fd = open("/proc/self/stat", O_RDONLY); 548 assert(fd > 0); 549 int sz = read(fd, x, 32); 550 assert(sz == 32); 551 EXPECT_NOT_POISONED(x[0]); 552 EXPECT_NOT_POISONED(x[16]); 553 EXPECT_NOT_POISONED(x[31]); 554 close(fd); 555 delete x; 556} 557 558TEST(MemorySanitizer, pread) { 559 char *x = new char[32]; 560 int fd = open("/proc/self/stat", O_RDONLY); 561 assert(fd > 0); 562 int sz = pread(fd, x, 32, 0); 563 assert(sz == 32); 564 EXPECT_NOT_POISONED(x[0]); 565 EXPECT_NOT_POISONED(x[16]); 566 EXPECT_NOT_POISONED(x[31]); 567 close(fd); 568 delete x; 569} 570 571TEST(MemorySanitizer, readv) { 572 char buf[2011]; 573 struct iovec iov[2]; 574 iov[0].iov_base = buf + 1; 575 iov[0].iov_len = 5; 576 iov[1].iov_base = buf + 10; 577 iov[1].iov_len = 2000; 578 int fd = open("/proc/self/stat", O_RDONLY); 579 assert(fd > 0); 580 int sz = readv(fd, iov, 2); 581 ASSERT_LT(sz, 5 + 2000); 582 ASSERT_GT(sz, iov[0].iov_len); 583 EXPECT_POISONED(buf[0]); 584 EXPECT_NOT_POISONED(buf[1]); 585 EXPECT_NOT_POISONED(buf[5]); 586 EXPECT_POISONED(buf[6]); 587 EXPECT_POISONED(buf[9]); 588 EXPECT_NOT_POISONED(buf[10]); 589 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 590 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 591 close(fd); 592} 593 594TEST(MemorySanitizer, preadv) { 595 char buf[2011]; 596 struct iovec iov[2]; 597 iov[0].iov_base = buf + 1; 598 iov[0].iov_len = 5; 599 iov[1].iov_base = buf + 10; 600 iov[1].iov_len = 2000; 601 int fd = open("/proc/self/stat", O_RDONLY); 602 assert(fd > 0); 603 int sz = preadv(fd, iov, 2, 3); 604 ASSERT_LT(sz, 5 + 2000); 605 ASSERT_GT(sz, iov[0].iov_len); 606 EXPECT_POISONED(buf[0]); 607 EXPECT_NOT_POISONED(buf[1]); 608 EXPECT_NOT_POISONED(buf[5]); 609 EXPECT_POISONED(buf[6]); 610 EXPECT_POISONED(buf[9]); 611 EXPECT_NOT_POISONED(buf[10]); 612 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 613 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 614 close(fd); 615} 616 617// FIXME: fails now. 618TEST(MemorySanitizer, DISABLED_ioctl) { 619 struct winsize ws; 620 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 621 EXPECT_NOT_POISONED(ws.ws_col); 622} 623 624TEST(MemorySanitizer, readlink) { 625 char *x = new char[1000]; 626 readlink("/proc/self/exe", x, 1000); 627 EXPECT_NOT_POISONED(x[0]); 628 delete [] x; 629} 630 631 632TEST(MemorySanitizer, stat) { 633 struct stat* st = new struct stat; 634 int res = stat("/proc/self/stat", st); 635 assert(!res); 636 EXPECT_NOT_POISONED(st->st_dev); 637 EXPECT_NOT_POISONED(st->st_mode); 638 EXPECT_NOT_POISONED(st->st_size); 639} 640 641TEST(MemorySanitizer, statfs) { 642 struct statfs* st = new struct statfs; 643 int res = statfs("/", st); 644 assert(!res); 645 EXPECT_NOT_POISONED(st->f_type); 646 EXPECT_NOT_POISONED(st->f_bfree); 647 EXPECT_NOT_POISONED(st->f_namelen); 648} 649 650TEST(MemorySanitizer, pipe) { 651 int* pipefd = new int[2]; 652 int res = pipe(pipefd); 653 assert(!res); 654 EXPECT_NOT_POISONED(pipefd[0]); 655 EXPECT_NOT_POISONED(pipefd[1]); 656 close(pipefd[0]); 657 close(pipefd[1]); 658} 659 660TEST(MemorySanitizer, pipe2) { 661 int* pipefd = new int[2]; 662 int res = pipe2(pipefd, O_NONBLOCK); 663 assert(!res); 664 EXPECT_NOT_POISONED(pipefd[0]); 665 EXPECT_NOT_POISONED(pipefd[1]); 666 close(pipefd[0]); 667 close(pipefd[1]); 668} 669 670TEST(MemorySanitizer, socketpair) { 671 int sv[2]; 672 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 673 assert(!res); 674 EXPECT_NOT_POISONED(sv[0]); 675 EXPECT_NOT_POISONED(sv[1]); 676 close(sv[0]); 677 close(sv[1]); 678} 679 680TEST(MemorySanitizer, bind_getsockname) { 681 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 682 683 struct sockaddr_in sai; 684 memset(&sai, 0, sizeof(sai)); 685 sai.sin_family = AF_UNIX; 686 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 687 688 assert(!res); 689 char buf[200]; 690 socklen_t addrlen; 691 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 692 693 addrlen = sizeof(buf); 694 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 695 EXPECT_NOT_POISONED(addrlen); 696 EXPECT_NOT_POISONED(buf[0]); 697 EXPECT_NOT_POISONED(buf[addrlen - 1]); 698 EXPECT_POISONED(buf[addrlen]); 699 close(sock); 700} 701 702TEST(MemorySanitizer, accept) { 703 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 704 ASSERT_LT(0, listen_socket); 705 706 struct sockaddr_in sai; 707 sai.sin_family = AF_INET; 708 sai.sin_port = 0; 709 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 710 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 711 ASSERT_EQ(0, res); 712 713 res = listen(listen_socket, 1); 714 ASSERT_EQ(0, res); 715 716 socklen_t sz = sizeof(sai); 717 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 718 ASSERT_EQ(0, res); 719 ASSERT_EQ(sizeof(sai), sz); 720 721 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 722 ASSERT_LT(0, connect_socket); 723 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 724 ASSERT_EQ(0, res); 725 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 726 ASSERT_EQ(-1, res); 727 ASSERT_EQ(EINPROGRESS, errno); 728 729 __msan_poison(&sai, sizeof(sai)); 730 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 731 ASSERT_LT(0, new_sock); 732 ASSERT_EQ(sizeof(sai), sz); 733 EXPECT_NOT_POISONED(sai); 734 735 __msan_poison(&sai, sizeof(sai)); 736 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 737 ASSERT_EQ(0, res); 738 ASSERT_EQ(sizeof(sai), sz); 739 EXPECT_NOT_POISONED(sai); 740 741 close(new_sock); 742 close(connect_socket); 743 close(listen_socket); 744} 745 746TEST(MemorySanitizer, getaddrinfo) { 747 struct addrinfo *ai; 748 struct addrinfo hints; 749 memset(&hints, 0, sizeof(hints)); 750 hints.ai_family = AF_INET; 751 int res = getaddrinfo("localhost", NULL, &hints, &ai); 752 ASSERT_EQ(0, res); 753 EXPECT_NOT_POISONED(*ai); 754 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 755 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 756} 757 758TEST(MemorySanitizer, getnameinfo) { 759 struct sockaddr_in sai; 760 sai.sin_family = AF_INET; 761 sai.sin_port = 80; 762 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 763 char host[500]; 764 char serv[500]; 765 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 766 sizeof(host), serv, sizeof(serv), 0); 767 ASSERT_EQ(0, res); 768 EXPECT_NOT_POISONED(host[0]); 769 EXPECT_POISONED(host[sizeof(host) - 1]); 770 771 ASSERT_NE(0, strlen(host)); 772 EXPECT_NOT_POISONED(serv[0]); 773 EXPECT_POISONED(serv[sizeof(serv) - 1]); 774 ASSERT_NE(0, strlen(serv)); 775} 776 777#define EXPECT_HOSTENT_NOT_POISONED(he) \ 778 do { \ 779 EXPECT_NOT_POISONED(*(he)); \ 780 ASSERT_NE((void *) 0, (he)->h_name); \ 781 ASSERT_NE((void *) 0, (he)->h_aliases); \ 782 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 783 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 784 char **p = (he)->h_aliases; \ 785 while (*p) { \ 786 EXPECT_NOT_POISONED(strlen(*p)); \ 787 ++p; \ 788 } \ 789 char **q = (he)->h_addr_list; \ 790 while (*q) { \ 791 EXPECT_NOT_POISONED(*q[0]); \ 792 ++q; \ 793 } \ 794 EXPECT_NOT_POISONED(*q); \ 795 } while (0) 796 797TEST(MemorySanitizer, gethostent) { 798 struct hostent *he = gethostent(); 799 ASSERT_NE((void *)NULL, he); 800 EXPECT_HOSTENT_NOT_POISONED(he); 801} 802 803#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 804 805TEST(MemorySanitizer, gethostbyname) { 806 struct hostent *he = gethostbyname("localhost"); 807 ASSERT_NE((void *)NULL, he); 808 EXPECT_HOSTENT_NOT_POISONED(he); 809} 810 811#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 812 813TEST(MemorySanitizer, gethostbyname2) { 814 struct hostent *he = gethostbyname2("localhost", AF_INET); 815 ASSERT_NE((void *)NULL, he); 816 EXPECT_HOSTENT_NOT_POISONED(he); 817} 818 819TEST(MemorySanitizer, gethostbyaddr) { 820 in_addr_t addr = inet_addr("127.0.0.1"); 821 EXPECT_NOT_POISONED(addr); 822 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 823 ASSERT_NE((void *)NULL, he); 824 EXPECT_HOSTENT_NOT_POISONED(he); 825} 826 827TEST(MemorySanitizer, gethostent_r) { 828 char buf[2000]; 829 struct hostent he; 830 struct hostent *result; 831 int err; 832 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 833 ASSERT_EQ(0, res); 834 EXPECT_NOT_POISONED(result); 835 ASSERT_NE((void *)NULL, result); 836 EXPECT_HOSTENT_NOT_POISONED(result); 837 EXPECT_NOT_POISONED(err); 838} 839 840TEST(MemorySanitizer, gethostbyname_r) { 841 char buf[2000]; 842 struct hostent he; 843 struct hostent *result; 844 int err; 845 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 846 ASSERT_EQ(0, res); 847 EXPECT_NOT_POISONED(result); 848 ASSERT_NE((void *)NULL, result); 849 EXPECT_HOSTENT_NOT_POISONED(result); 850 EXPECT_NOT_POISONED(err); 851} 852 853TEST(MemorySanitizer, gethostbyname2_r) { 854 char buf[2000]; 855 struct hostent he; 856 struct hostent *result; 857 int err; 858 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 859 &result, &err); 860 ASSERT_EQ(0, res); 861 EXPECT_NOT_POISONED(result); 862 ASSERT_NE((void *)NULL, result); 863 EXPECT_HOSTENT_NOT_POISONED(result); 864 EXPECT_NOT_POISONED(err); 865} 866 867TEST(MemorySanitizer, gethostbyaddr_r) { 868 char buf[2000]; 869 struct hostent he; 870 struct hostent *result; 871 int err; 872 in_addr_t addr = inet_addr("127.0.0.1"); 873 EXPECT_NOT_POISONED(addr); 874 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 875 &result, &err); 876 ASSERT_EQ(0, res); 877 EXPECT_NOT_POISONED(result); 878 ASSERT_NE((void *)NULL, result); 879 EXPECT_HOSTENT_NOT_POISONED(result); 880 EXPECT_NOT_POISONED(err); 881} 882 883TEST(MemorySanitizer, getsockopt) { 884 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 885 struct linger l[2]; 886 socklen_t sz = sizeof(l[0]); 887 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 888 ASSERT_EQ(0, res); 889 ASSERT_EQ(sizeof(l[0]), sz); 890 EXPECT_NOT_POISONED(l[0]); 891 EXPECT_POISONED(*(char *)(l + 1)); 892} 893 894TEST(MemorySanitizer, getcwd) { 895 char path[PATH_MAX + 1]; 896 char* res = getcwd(path, sizeof(path)); 897 assert(res); 898 EXPECT_NOT_POISONED(path[0]); 899} 900 901TEST(MemorySanitizer, getcwd_gnu) { 902 char* res = getcwd(NULL, 0); 903 assert(res); 904 EXPECT_NOT_POISONED(res[0]); 905 free(res); 906} 907 908TEST(MemorySanitizer, get_current_dir_name) { 909 char* res = get_current_dir_name(); 910 assert(res); 911 EXPECT_NOT_POISONED(res[0]); 912 free(res); 913} 914 915TEST(MemorySanitizer, readdir) { 916 DIR *dir = opendir("."); 917 struct dirent *d = readdir(dir); 918 assert(d); 919 EXPECT_NOT_POISONED(d->d_name[0]); 920 closedir(dir); 921} 922 923TEST(MemorySanitizer, readdir_r) { 924 DIR *dir = opendir("."); 925 struct dirent d; 926 struct dirent *pd; 927 int res = readdir_r(dir, &d, &pd); 928 assert(!res); 929 EXPECT_NOT_POISONED(pd); 930 EXPECT_NOT_POISONED(d.d_name[0]); 931 closedir(dir); 932} 933 934TEST(MemorySanitizer, realpath) { 935 const char* relpath = "."; 936 char path[PATH_MAX + 1]; 937 char* res = realpath(relpath, path); 938 assert(res); 939 EXPECT_NOT_POISONED(path[0]); 940} 941 942TEST(MemorySanitizer, realpath_null) { 943 const char* relpath = "."; 944 char* res = realpath(relpath, NULL); 945 printf("%d, %s\n", errno, strerror(errno)); 946 assert(res); 947 EXPECT_NOT_POISONED(res[0]); 948 free(res); 949} 950 951TEST(MemorySanitizer, canonicalize_file_name) { 952 const char* relpath = "."; 953 char* res = canonicalize_file_name(relpath); 954 assert(res); 955 EXPECT_NOT_POISONED(res[0]); 956 free(res); 957} 958 959TEST(MemorySanitizer, memcpy) { 960 char* x = new char[2]; 961 char* y = new char[2]; 962 x[0] = 1; 963 x[1] = *GetPoisoned<char>(); 964 memcpy(y, x, 2); 965 EXPECT_NOT_POISONED(y[0]); 966 EXPECT_POISONED(y[1]); 967} 968 969TEST(MemorySanitizer, memmove) { 970 char* x = new char[2]; 971 char* y = new char[2]; 972 x[0] = 1; 973 x[1] = *GetPoisoned<char>(); 974 memmove(y, x, 2); 975 EXPECT_NOT_POISONED(y[0]); 976 EXPECT_POISONED(y[1]); 977} 978 979TEST(MemorySanitizer, bcopy) { 980 char* x = new char[2]; 981 char* y = new char[2]; 982 x[0] = 1; 983 x[1] = *GetPoisoned<char>(); 984 bcopy(x, y, 2); 985 EXPECT_NOT_POISONED(y[0]); 986 EXPECT_POISONED(y[1]); 987} 988 989TEST(MemorySanitizer, strdup) { 990 char buf[4] = "abc"; 991 __msan_poison(buf + 2, sizeof(*buf)); 992 char *x = strdup(buf); 993 EXPECT_NOT_POISONED(x[0]); 994 EXPECT_NOT_POISONED(x[1]); 995 EXPECT_POISONED(x[2]); 996 EXPECT_NOT_POISONED(x[3]); 997 free(x); 998} 999 1000TEST(MemorySanitizer, strndup) { 1001 char buf[4] = "abc"; 1002 __msan_poison(buf + 2, sizeof(*buf)); 1003 char *x = strndup(buf, 3); 1004 EXPECT_NOT_POISONED(x[0]); 1005 EXPECT_NOT_POISONED(x[1]); 1006 EXPECT_POISONED(x[2]); 1007 EXPECT_NOT_POISONED(x[3]); 1008 free(x); 1009} 1010 1011TEST(MemorySanitizer, strndup_short) { 1012 char buf[4] = "abc"; 1013 __msan_poison(buf + 1, sizeof(*buf)); 1014 __msan_poison(buf + 2, sizeof(*buf)); 1015 char *x = strndup(buf, 2); 1016 EXPECT_NOT_POISONED(x[0]); 1017 EXPECT_POISONED(x[1]); 1018 EXPECT_NOT_POISONED(x[2]); 1019 free(x); 1020} 1021 1022 1023template<class T, int size> 1024void TestOverlapMemmove() { 1025 T *x = new T[size]; 1026 assert(size >= 3); 1027 x[2] = 0; 1028 memmove(x, x + 1, (size - 1) * sizeof(T)); 1029 EXPECT_NOT_POISONED(x[1]); 1030 if (!__msan_has_dynamic_component()) { 1031 // FIXME: under DR we will lose this information 1032 // because accesses in memmove will unpoisin the shadow. 1033 // We need to use our own memove implementation instead of libc's. 1034 EXPECT_POISONED(x[0]); 1035 EXPECT_POISONED(x[2]); 1036 } 1037 delete [] x; 1038} 1039 1040TEST(MemorySanitizer, overlap_memmove) { 1041 TestOverlapMemmove<U1, 10>(); 1042 TestOverlapMemmove<U1, 1000>(); 1043 TestOverlapMemmove<U8, 4>(); 1044 TestOverlapMemmove<U8, 1000>(); 1045} 1046 1047TEST(MemorySanitizer, strcpy) { // NOLINT 1048 char* x = new char[3]; 1049 char* y = new char[3]; 1050 x[0] = 'a'; 1051 x[1] = *GetPoisoned<char>(1, 1); 1052 x[2] = 0; 1053 strcpy(y, x); // NOLINT 1054 EXPECT_NOT_POISONED(y[0]); 1055 EXPECT_POISONED(y[1]); 1056 EXPECT_NOT_POISONED(y[2]); 1057} 1058 1059TEST(MemorySanitizer, strncpy) { // NOLINT 1060 char* x = new char[3]; 1061 char* y = new char[3]; 1062 x[0] = 'a'; 1063 x[1] = *GetPoisoned<char>(1, 1); 1064 x[2] = 0; 1065 strncpy(y, x, 2); // NOLINT 1066 EXPECT_NOT_POISONED(y[0]); 1067 EXPECT_POISONED(y[1]); 1068 EXPECT_POISONED(y[2]); 1069} 1070 1071TEST(MemorySanitizer, stpcpy) { // NOLINT 1072 char* x = new char[3]; 1073 char* y = new char[3]; 1074 x[0] = 'a'; 1075 x[1] = *GetPoisoned<char>(1, 1); 1076 x[2] = 0; 1077 char *res = stpcpy(y, x); // NOLINT 1078 ASSERT_EQ(res, y + 2); 1079 EXPECT_NOT_POISONED(y[0]); 1080 EXPECT_POISONED(y[1]); 1081 EXPECT_NOT_POISONED(y[2]); 1082} 1083 1084TEST(MemorySanitizer, strtol) { 1085 char *e; 1086 assert(1 == strtol("1", &e, 10)); 1087 EXPECT_NOT_POISONED((S8) e); 1088} 1089 1090TEST(MemorySanitizer, strtoll) { 1091 char *e; 1092 assert(1 == strtoll("1", &e, 10)); 1093 EXPECT_NOT_POISONED((S8) e); 1094} 1095 1096TEST(MemorySanitizer, strtoul) { 1097 char *e; 1098 assert(1 == strtoul("1", &e, 10)); 1099 EXPECT_NOT_POISONED((S8) e); 1100} 1101 1102TEST(MemorySanitizer, strtoull) { 1103 char *e; 1104 assert(1 == strtoull("1", &e, 10)); 1105 EXPECT_NOT_POISONED((S8) e); 1106} 1107 1108TEST(MemorySanitizer, strtoimax) { 1109 char *e; 1110 assert(1 == strtoimax("1", &e, 10)); 1111 EXPECT_NOT_POISONED((S8) e); 1112} 1113 1114TEST(MemorySanitizer, strtoumax) { 1115 char *e; 1116 assert(1 == strtoumax("1", &e, 10)); 1117 EXPECT_NOT_POISONED((S8) e); 1118} 1119 1120TEST(MemorySanitizer, strtod) { 1121 char *e; 1122 assert(0 != strtod("1.5", &e)); 1123 EXPECT_NOT_POISONED((S8) e); 1124} 1125 1126TEST(MemorySanitizer, strtof) { 1127 char *e; 1128 assert(0 != strtof("1.5", &e)); 1129 EXPECT_NOT_POISONED((S8) e); 1130} 1131 1132TEST(MemorySanitizer, strtold) { 1133 char *e; 1134 assert(0 != strtold("1.5", &e)); 1135 EXPECT_NOT_POISONED((S8) e); 1136} 1137 1138TEST(MemorySanitizer, modf) { 1139 double x, y; 1140 x = modf(2.1, &y); 1141 EXPECT_NOT_POISONED(y); 1142} 1143 1144TEST(MemorySanitizer, modff) { 1145 float x, y; 1146 x = modff(2.1, &y); 1147 EXPECT_NOT_POISONED(y); 1148} 1149 1150TEST(MemorySanitizer, modfl) { 1151 long double x, y; 1152 x = modfl(2.1, &y); 1153 EXPECT_NOT_POISONED(y); 1154} 1155 1156TEST(MemorySanitizer, sprintf) { // NOLINT 1157 char buff[10]; 1158 break_optimization(buff); 1159 EXPECT_POISONED(buff[0]); 1160 int res = sprintf(buff, "%d", 1234567); // NOLINT 1161 assert(res == 7); 1162 assert(buff[0] == '1'); 1163 assert(buff[1] == '2'); 1164 assert(buff[2] == '3'); 1165 assert(buff[6] == '7'); 1166 assert(buff[7] == 0); 1167 EXPECT_POISONED(buff[8]); 1168} 1169 1170TEST(MemorySanitizer, snprintf) { 1171 char buff[10]; 1172 break_optimization(buff); 1173 EXPECT_POISONED(buff[0]); 1174 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1175 assert(res == 7); 1176 assert(buff[0] == '1'); 1177 assert(buff[1] == '2'); 1178 assert(buff[2] == '3'); 1179 assert(buff[6] == '7'); 1180 assert(buff[7] == 0); 1181 EXPECT_POISONED(buff[8]); 1182} 1183 1184TEST(MemorySanitizer, swprintf) { 1185 wchar_t buff[10]; 1186 assert(sizeof(wchar_t) == 4); 1187 break_optimization(buff); 1188 EXPECT_POISONED(buff[0]); 1189 int res = swprintf(buff, 9, L"%d", 1234567); 1190 assert(res == 7); 1191 assert(buff[0] == '1'); 1192 assert(buff[1] == '2'); 1193 assert(buff[2] == '3'); 1194 assert(buff[6] == '7'); 1195 assert(buff[7] == 0); 1196 EXPECT_POISONED(buff[8]); 1197} 1198 1199TEST(MemorySanitizer, asprintf) { // NOLINT 1200 char *pbuf; 1201 EXPECT_POISONED(pbuf); 1202 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1203 assert(res == 7); 1204 EXPECT_NOT_POISONED(pbuf); 1205 assert(pbuf[0] == '1'); 1206 assert(pbuf[1] == '2'); 1207 assert(pbuf[2] == '3'); 1208 assert(pbuf[6] == '7'); 1209 assert(pbuf[7] == 0); 1210 free(pbuf); 1211} 1212 1213TEST(MemorySanitizer, wcstombs) { 1214 const wchar_t *x = L"abc"; 1215 char buff[10]; 1216 int res = wcstombs(buff, x, 4); 1217 EXPECT_EQ(res, 3); 1218 EXPECT_EQ(buff[0], 'a'); 1219 EXPECT_EQ(buff[1], 'b'); 1220 EXPECT_EQ(buff[2], 'c'); 1221} 1222 1223TEST(MemorySanitizer, wcsrtombs) { 1224 const wchar_t *x = L"abc"; 1225 const wchar_t *p = x; 1226 char buff[10]; 1227 mbstate_t mbs; 1228 memset(&mbs, 0, sizeof(mbs)); 1229 int res = wcsrtombs(buff, &p, 4, &mbs); 1230 EXPECT_EQ(res, 3); 1231 EXPECT_EQ(buff[0], 'a'); 1232 EXPECT_EQ(buff[1], 'b'); 1233 EXPECT_EQ(buff[2], 'c'); 1234 EXPECT_EQ(buff[3], '\0'); 1235 EXPECT_POISONED(buff[4]); 1236} 1237 1238TEST(MemorySanitizer, wcsnrtombs) { 1239 const wchar_t *x = L"abc"; 1240 const wchar_t *p = x; 1241 char buff[10]; 1242 mbstate_t mbs; 1243 memset(&mbs, 0, sizeof(mbs)); 1244 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1245 EXPECT_EQ(res, 2); 1246 EXPECT_EQ(buff[0], 'a'); 1247 EXPECT_EQ(buff[1], 'b'); 1248 EXPECT_POISONED(buff[2]); 1249} 1250 1251TEST(MemorySanitizer, mbtowc) { 1252 const char *x = "abc"; 1253 wchar_t wx; 1254 int res = mbtowc(&wx, x, 3); 1255 EXPECT_GT(res, 0); 1256 EXPECT_NOT_POISONED(wx); 1257} 1258 1259TEST(MemorySanitizer, mbrtowc) { 1260 const char *x = "abc"; 1261 wchar_t wx; 1262 mbstate_t mbs; 1263 memset(&mbs, 0, sizeof(mbs)); 1264 int res = mbrtowc(&wx, x, 3, &mbs); 1265 EXPECT_GT(res, 0); 1266 EXPECT_NOT_POISONED(wx); 1267} 1268 1269TEST(MemorySanitizer, gettimeofday) { 1270 struct timeval tv; 1271 struct timezone tz; 1272 break_optimization(&tv); 1273 break_optimization(&tz); 1274 assert(sizeof(tv) == 16); 1275 assert(sizeof(tz) == 8); 1276 EXPECT_POISONED(tv.tv_sec); 1277 EXPECT_POISONED(tv.tv_usec); 1278 EXPECT_POISONED(tz.tz_minuteswest); 1279 EXPECT_POISONED(tz.tz_dsttime); 1280 assert(0 == gettimeofday(&tv, &tz)); 1281 EXPECT_NOT_POISONED(tv.tv_sec); 1282 EXPECT_NOT_POISONED(tv.tv_usec); 1283 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1284 EXPECT_NOT_POISONED(tz.tz_dsttime); 1285} 1286 1287TEST(MemorySanitizer, clock_gettime) { 1288 struct timespec tp; 1289 EXPECT_POISONED(tp.tv_sec); 1290 EXPECT_POISONED(tp.tv_nsec); 1291 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1292 EXPECT_NOT_POISONED(tp.tv_sec); 1293 EXPECT_NOT_POISONED(tp.tv_nsec); 1294} 1295 1296TEST(MemorySanitizer, clock_getres) { 1297 struct timespec tp; 1298 EXPECT_POISONED(tp.tv_sec); 1299 EXPECT_POISONED(tp.tv_nsec); 1300 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1301 EXPECT_POISONED(tp.tv_sec); 1302 EXPECT_POISONED(tp.tv_nsec); 1303 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1304 EXPECT_NOT_POISONED(tp.tv_sec); 1305 EXPECT_NOT_POISONED(tp.tv_nsec); 1306} 1307 1308TEST(MemorySanitizer, getitimer) { 1309 struct itimerval it1, it2; 1310 int res; 1311 EXPECT_POISONED(it1.it_interval.tv_sec); 1312 EXPECT_POISONED(it1.it_interval.tv_usec); 1313 EXPECT_POISONED(it1.it_value.tv_sec); 1314 EXPECT_POISONED(it1.it_value.tv_usec); 1315 res = getitimer(ITIMER_VIRTUAL, &it1); 1316 assert(!res); 1317 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1318 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1319 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1320 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1321 1322 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1323 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1324 1325 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1326 assert(!res); 1327 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1328 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1329 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1330 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1331 1332 // Check that old_value can be 0, and disable the timer. 1333 memset(&it1, 0, sizeof(it1)); 1334 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1335 assert(!res); 1336} 1337 1338TEST(MemorySanitizer, time) { 1339 time_t t; 1340 EXPECT_POISONED(t); 1341 time_t t2 = time(&t); 1342 assert(t2 != (time_t)-1); 1343 EXPECT_NOT_POISONED(t); 1344} 1345 1346TEST(MemorySanitizer, localtime) { 1347 time_t t = 123; 1348 struct tm *time = localtime(&t); 1349 assert(time != 0); 1350 EXPECT_NOT_POISONED(time->tm_sec); 1351 EXPECT_NOT_POISONED(time->tm_hour); 1352 EXPECT_NOT_POISONED(time->tm_year); 1353 EXPECT_NOT_POISONED(time->tm_isdst); 1354} 1355 1356TEST(MemorySanitizer, localtime_r) { 1357 time_t t = 123; 1358 struct tm time; 1359 struct tm *res = localtime_r(&t, &time); 1360 assert(res != 0); 1361 EXPECT_NOT_POISONED(time.tm_sec); 1362 EXPECT_NOT_POISONED(time.tm_hour); 1363 EXPECT_NOT_POISONED(time.tm_year); 1364 EXPECT_NOT_POISONED(time.tm_isdst); 1365} 1366 1367TEST(MemorySanitizer, mmap) { 1368 const int size = 4096; 1369 void *p1, *p2; 1370 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1371 __msan_poison(p1, size); 1372 munmap(p1, size); 1373 for (int i = 0; i < 1000; i++) { 1374 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1375 if (p2 == p1) 1376 break; 1377 else 1378 munmap(p2, size); 1379 } 1380 if (p1 == p2) { 1381 EXPECT_NOT_POISONED(*(char*)p2); 1382 munmap(p2, size); 1383 } 1384} 1385 1386// FIXME: enable and add ecvt. 1387// FIXME: check why msandr does nt handle fcvt. 1388TEST(MemorySanitizer, fcvt) { 1389 int a, b; 1390 break_optimization(&a); 1391 break_optimization(&b); 1392 EXPECT_POISONED(a); 1393 EXPECT_POISONED(b); 1394 char *str = fcvt(12345.6789, 10, &a, &b); 1395 EXPECT_NOT_POISONED(a); 1396 EXPECT_NOT_POISONED(b); 1397} 1398 1399TEST(MemorySanitizer, frexp) { 1400 int x; 1401 x = *GetPoisoned<int>(); 1402 double r = frexp(1.1, &x); 1403 EXPECT_NOT_POISONED(r); 1404 EXPECT_NOT_POISONED(x); 1405 1406 x = *GetPoisoned<int>(); 1407 float rf = frexpf(1.1, &x); 1408 EXPECT_NOT_POISONED(rf); 1409 EXPECT_NOT_POISONED(x); 1410 1411 x = *GetPoisoned<int>(); 1412 double rl = frexpl(1.1, &x); 1413 EXPECT_NOT_POISONED(rl); 1414 EXPECT_NOT_POISONED(x); 1415} 1416 1417namespace { 1418 1419static int cnt; 1420 1421void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1422 assert(signo == SIGPROF); 1423 assert(si); 1424 EXPECT_NOT_POISONED(si->si_errno); 1425 EXPECT_NOT_POISONED(si->si_pid); 1426#if __linux__ 1427# if defined(__x86_64__) 1428 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1429# elif defined(__i386__) 1430 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1431# endif 1432#endif 1433 ++cnt; 1434} 1435 1436TEST(MemorySanitizer, sigaction) { 1437 struct sigaction act = {}; 1438 struct sigaction oldact = {}; 1439 struct sigaction origact = {}; 1440 1441 sigaction(SIGPROF, 0, &origact); 1442 1443 act.sa_flags |= SA_SIGINFO; 1444 act.sa_sigaction = &SigactionHandler; 1445 sigaction(SIGPROF, &act, 0); 1446 1447 kill(getpid(), SIGPROF); 1448 1449 act.sa_flags &= ~SA_SIGINFO; 1450 act.sa_handler = SIG_DFL; 1451 sigaction(SIGPROF, &act, 0); 1452 1453 act.sa_flags &= ~SA_SIGINFO; 1454 act.sa_handler = SIG_IGN; 1455 sigaction(SIGPROF, &act, &oldact); 1456 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1457 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1458 kill(getpid(), SIGPROF); 1459 1460 act.sa_flags |= SA_SIGINFO; 1461 act.sa_sigaction = &SigactionHandler; 1462 sigaction(SIGPROF, &act, &oldact); 1463 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1464 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1465 kill(getpid(), SIGPROF); 1466 1467 act.sa_flags &= ~SA_SIGINFO; 1468 act.sa_handler = SIG_DFL; 1469 sigaction(SIGPROF, &act, &oldact); 1470 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1471 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1472 EXPECT_EQ(2, cnt); 1473 1474 sigaction(SIGPROF, &origact, 0); 1475} 1476 1477} // namespace 1478 1479struct StructWithDtor { 1480 ~StructWithDtor(); 1481}; 1482 1483NOINLINE StructWithDtor::~StructWithDtor() { 1484 break_optimization(0); 1485} 1486 1487TEST(MemorySanitizer, Invoke) { 1488 StructWithDtor s; // Will cause the calls to become invokes. 1489 EXPECT_NOT_POISONED(0); 1490 EXPECT_POISONED(*GetPoisoned<int>()); 1491 EXPECT_NOT_POISONED(0); 1492 EXPECT_POISONED(*GetPoisoned<int>()); 1493 EXPECT_POISONED(ReturnPoisoned<S4>()); 1494} 1495 1496TEST(MemorySanitizer, ptrtoint) { 1497 // Test that shadow is propagated through pointer-to-integer conversion. 1498 void* p = (void*)0xABCD; 1499 __msan_poison(((char*)&p) + 1, sizeof(p)); 1500 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1501 1502 void* q = (void*)0xABCD; 1503 __msan_poison(&q, sizeof(q) - 1); 1504 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1505} 1506 1507static void vaargsfn2(int guard, ...) { 1508 va_list vl; 1509 va_start(vl, guard); 1510 EXPECT_NOT_POISONED(va_arg(vl, int)); 1511 EXPECT_NOT_POISONED(va_arg(vl, int)); 1512 EXPECT_NOT_POISONED(va_arg(vl, int)); 1513 EXPECT_POISONED(va_arg(vl, double)); 1514 va_end(vl); 1515} 1516 1517static void vaargsfn(int guard, ...) { 1518 va_list vl; 1519 va_start(vl, guard); 1520 EXPECT_NOT_POISONED(va_arg(vl, int)); 1521 EXPECT_POISONED(va_arg(vl, int)); 1522 // The following call will overwrite __msan_param_tls. 1523 // Checks after it test that arg shadow was somehow saved across the call. 1524 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1525 EXPECT_NOT_POISONED(va_arg(vl, int)); 1526 EXPECT_POISONED(va_arg(vl, int)); 1527 va_end(vl); 1528} 1529 1530TEST(MemorySanitizer, VAArgTest) { 1531 int* x = GetPoisoned<int>(); 1532 int* y = GetPoisoned<int>(4); 1533 vaargsfn(1, 13, *x, 42, *y); 1534} 1535 1536static void vaargsfn_many(int guard, ...) { 1537 va_list vl; 1538 va_start(vl, guard); 1539 EXPECT_NOT_POISONED(va_arg(vl, int)); 1540 EXPECT_POISONED(va_arg(vl, int)); 1541 EXPECT_NOT_POISONED(va_arg(vl, int)); 1542 EXPECT_NOT_POISONED(va_arg(vl, int)); 1543 EXPECT_NOT_POISONED(va_arg(vl, int)); 1544 EXPECT_NOT_POISONED(va_arg(vl, int)); 1545 EXPECT_NOT_POISONED(va_arg(vl, int)); 1546 EXPECT_NOT_POISONED(va_arg(vl, int)); 1547 EXPECT_NOT_POISONED(va_arg(vl, int)); 1548 EXPECT_POISONED(va_arg(vl, int)); 1549 va_end(vl); 1550} 1551 1552TEST(MemorySanitizer, VAArgManyTest) { 1553 int* x = GetPoisoned<int>(); 1554 int* y = GetPoisoned<int>(4); 1555 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1556} 1557 1558static void vaargsfn_pass2(va_list vl) { 1559 EXPECT_NOT_POISONED(va_arg(vl, int)); 1560 EXPECT_NOT_POISONED(va_arg(vl, int)); 1561 EXPECT_POISONED(va_arg(vl, int)); 1562} 1563 1564static void vaargsfn_pass(int guard, ...) { 1565 va_list vl; 1566 va_start(vl, guard); 1567 EXPECT_POISONED(va_arg(vl, int)); 1568 vaargsfn_pass2(vl); 1569 va_end(vl); 1570} 1571 1572TEST(MemorySanitizer, VAArgPass) { 1573 int* x = GetPoisoned<int>(); 1574 int* y = GetPoisoned<int>(4); 1575 vaargsfn_pass(1, *x, 2, 3, *y); 1576} 1577 1578static void vaargsfn_copy2(va_list vl) { 1579 EXPECT_NOT_POISONED(va_arg(vl, int)); 1580 EXPECT_POISONED(va_arg(vl, int)); 1581} 1582 1583static void vaargsfn_copy(int guard, ...) { 1584 va_list vl; 1585 va_start(vl, guard); 1586 EXPECT_NOT_POISONED(va_arg(vl, int)); 1587 EXPECT_POISONED(va_arg(vl, int)); 1588 va_list vl2; 1589 va_copy(vl2, vl); 1590 vaargsfn_copy2(vl2); 1591 EXPECT_NOT_POISONED(va_arg(vl, int)); 1592 EXPECT_POISONED(va_arg(vl, int)); 1593 va_end(vl); 1594} 1595 1596TEST(MemorySanitizer, VAArgCopy) { 1597 int* x = GetPoisoned<int>(); 1598 int* y = GetPoisoned<int>(4); 1599 vaargsfn_copy(1, 2, *x, 3, *y); 1600} 1601 1602static void vaargsfn_ptr(int guard, ...) { 1603 va_list vl; 1604 va_start(vl, guard); 1605 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1606 EXPECT_POISONED(va_arg(vl, int*)); 1607 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1608 EXPECT_POISONED(va_arg(vl, double*)); 1609 va_end(vl); 1610} 1611 1612TEST(MemorySanitizer, VAArgPtr) { 1613 int** x = GetPoisoned<int*>(); 1614 double** y = GetPoisoned<double*>(8); 1615 int z; 1616 vaargsfn_ptr(1, &z, *x, &z, *y); 1617} 1618 1619static void vaargsfn_overflow(int guard, ...) { 1620 va_list vl; 1621 va_start(vl, guard); 1622 EXPECT_NOT_POISONED(va_arg(vl, int)); 1623 EXPECT_NOT_POISONED(va_arg(vl, int)); 1624 EXPECT_POISONED(va_arg(vl, int)); 1625 EXPECT_NOT_POISONED(va_arg(vl, int)); 1626 EXPECT_NOT_POISONED(va_arg(vl, int)); 1627 EXPECT_NOT_POISONED(va_arg(vl, int)); 1628 1629 EXPECT_NOT_POISONED(va_arg(vl, double)); 1630 EXPECT_NOT_POISONED(va_arg(vl, double)); 1631 EXPECT_NOT_POISONED(va_arg(vl, double)); 1632 EXPECT_POISONED(va_arg(vl, double)); 1633 EXPECT_NOT_POISONED(va_arg(vl, double)); 1634 EXPECT_POISONED(va_arg(vl, int*)); 1635 EXPECT_NOT_POISONED(va_arg(vl, double)); 1636 EXPECT_NOT_POISONED(va_arg(vl, double)); 1637 1638 EXPECT_POISONED(va_arg(vl, int)); 1639 EXPECT_POISONED(va_arg(vl, double)); 1640 EXPECT_POISONED(va_arg(vl, int*)); 1641 1642 EXPECT_NOT_POISONED(va_arg(vl, int)); 1643 EXPECT_NOT_POISONED(va_arg(vl, double)); 1644 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1645 1646 EXPECT_POISONED(va_arg(vl, int)); 1647 EXPECT_POISONED(va_arg(vl, double)); 1648 EXPECT_POISONED(va_arg(vl, int*)); 1649 1650 va_end(vl); 1651} 1652 1653TEST(MemorySanitizer, VAArgOverflow) { 1654 int* x = GetPoisoned<int>(); 1655 double* y = GetPoisoned<double>(8); 1656 int** p = GetPoisoned<int*>(16); 1657 int z; 1658 vaargsfn_overflow(1, 1659 1, 2, *x, 4, 5, 6, 1660 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1661 // the following args will overflow for sure 1662 *x, *y, *p, 1663 7, 9.9, &z, 1664 *x, *y, *p); 1665} 1666 1667static void vaargsfn_tlsoverwrite2(int guard, ...) { 1668 va_list vl; 1669 va_start(vl, guard); 1670 EXPECT_NOT_POISONED(va_arg(vl, int)); 1671 va_end(vl); 1672} 1673 1674static void vaargsfn_tlsoverwrite(int guard, ...) { 1675 // This call will overwrite TLS contents unless it's backed up somewhere. 1676 vaargsfn_tlsoverwrite2(2, 42); 1677 va_list vl; 1678 va_start(vl, guard); 1679 EXPECT_POISONED(va_arg(vl, int)); 1680 va_end(vl); 1681} 1682 1683TEST(MemorySanitizer, VAArgTLSOverwrite) { 1684 int* x = GetPoisoned<int>(); 1685 vaargsfn_tlsoverwrite(1, *x); 1686} 1687 1688struct StructByVal { 1689 int a, b, c, d, e, f; 1690}; 1691 1692NOINLINE void StructByValTestFunc(struct StructByVal s) { 1693 EXPECT_NOT_POISONED(s.a); 1694 EXPECT_POISONED(s.b); 1695 EXPECT_NOT_POISONED(s.c); 1696 EXPECT_POISONED(s.d); 1697 EXPECT_NOT_POISONED(s.e); 1698 EXPECT_POISONED(s.f); 1699} 1700 1701NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1702 StructByValTestFunc(s); 1703} 1704 1705NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1706 StructByValTestFunc(s); 1707} 1708 1709TEST(MemorySanitizer, StructByVal) { 1710 // Large aggregates are passed as "byval" pointer argument in LLVM. 1711 struct StructByVal s; 1712 s.a = 1; 1713 s.b = *GetPoisoned<int>(); 1714 s.c = 2; 1715 s.d = *GetPoisoned<int>(); 1716 s.e = 3; 1717 s.f = *GetPoisoned<int>(); 1718 StructByValTestFunc(s); 1719 StructByValTestFunc1(s); 1720 StructByValTestFunc2(0, s); 1721} 1722 1723 1724#if MSAN_HAS_M128 1725NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1726NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1727TEST(MemorySanitizer, m128) { 1728 __m128i a = _mm_set1_epi16(0x1234); 1729 __m128i b = _mm_set1_epi16(0x7890); 1730 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1731 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1732} 1733// FIXME: add more tests for __m128i. 1734#endif // MSAN_HAS_M128 1735 1736// We should not complain when copying this poisoned hole. 1737struct StructWithHole { 1738 U4 a; 1739 // 4-byte hole. 1740 U8 b; 1741}; 1742 1743NOINLINE StructWithHole ReturnStructWithHole() { 1744 StructWithHole res; 1745 __msan_poison(&res, sizeof(res)); 1746 res.a = 1; 1747 res.b = 2; 1748 return res; 1749} 1750 1751TEST(MemorySanitizer, StructWithHole) { 1752 StructWithHole a = ReturnStructWithHole(); 1753 break_optimization(&a); 1754} 1755 1756template <class T> 1757NOINLINE T ReturnStruct() { 1758 T res; 1759 __msan_poison(&res, sizeof(res)); 1760 res.a = 1; 1761 return res; 1762} 1763 1764template <class T> 1765NOINLINE void TestReturnStruct() { 1766 T s1 = ReturnStruct<T>(); 1767 EXPECT_NOT_POISONED(s1.a); 1768 EXPECT_POISONED(s1.b); 1769} 1770 1771struct SSS1 { 1772 int a, b, c; 1773}; 1774struct SSS2 { 1775 int b, a, c; 1776}; 1777struct SSS3 { 1778 int b, c, a; 1779}; 1780struct SSS4 { 1781 int c, b, a; 1782}; 1783 1784struct SSS5 { 1785 int a; 1786 float b; 1787}; 1788struct SSS6 { 1789 int a; 1790 double b; 1791}; 1792struct SSS7 { 1793 S8 b; 1794 int a; 1795}; 1796struct SSS8 { 1797 S2 b; 1798 S8 a; 1799}; 1800 1801TEST(MemorySanitizer, IntStruct3) { 1802 TestReturnStruct<SSS1>(); 1803 TestReturnStruct<SSS2>(); 1804 TestReturnStruct<SSS3>(); 1805 TestReturnStruct<SSS4>(); 1806 TestReturnStruct<SSS5>(); 1807 TestReturnStruct<SSS6>(); 1808 TestReturnStruct<SSS7>(); 1809 TestReturnStruct<SSS8>(); 1810} 1811 1812struct LongStruct { 1813 U1 a1, b1; 1814 U2 a2, b2; 1815 U4 a4, b4; 1816 U8 a8, b8; 1817}; 1818 1819NOINLINE LongStruct ReturnLongStruct1() { 1820 LongStruct res; 1821 __msan_poison(&res, sizeof(res)); 1822 res.a1 = res.a2 = res.a4 = res.a8 = 111; 1823 // leaves b1, .., b8 poisoned. 1824 return res; 1825} 1826 1827NOINLINE LongStruct ReturnLongStruct2() { 1828 LongStruct res; 1829 __msan_poison(&res, sizeof(res)); 1830 res.b1 = res.b2 = res.b4 = res.b8 = 111; 1831 // leaves a1, .., a8 poisoned. 1832 return res; 1833} 1834 1835TEST(MemorySanitizer, LongStruct) { 1836 LongStruct s1 = ReturnLongStruct1(); 1837 __msan_print_shadow(&s1, sizeof(s1)); 1838 EXPECT_NOT_POISONED(s1.a1); 1839 EXPECT_NOT_POISONED(s1.a2); 1840 EXPECT_NOT_POISONED(s1.a4); 1841 EXPECT_NOT_POISONED(s1.a8); 1842 1843 EXPECT_POISONED(s1.b1); 1844 EXPECT_POISONED(s1.b2); 1845 EXPECT_POISONED(s1.b4); 1846 EXPECT_POISONED(s1.b8); 1847 1848 LongStruct s2 = ReturnLongStruct2(); 1849 __msan_print_shadow(&s2, sizeof(s2)); 1850 EXPECT_NOT_POISONED(s2.b1); 1851 EXPECT_NOT_POISONED(s2.b2); 1852 EXPECT_NOT_POISONED(s2.b4); 1853 EXPECT_NOT_POISONED(s2.b8); 1854 1855 EXPECT_POISONED(s2.a1); 1856 EXPECT_POISONED(s2.a2); 1857 EXPECT_POISONED(s2.a4); 1858 EXPECT_POISONED(s2.a8); 1859} 1860 1861TEST(MemorySanitizer, getrlimit) { 1862 struct rlimit limit; 1863 __msan_poison(&limit, sizeof(limit)); 1864 int result = getrlimit(RLIMIT_DATA, &limit); 1865 assert(result == 0); 1866 EXPECT_NOT_POISONED(limit.rlim_cur); 1867 EXPECT_NOT_POISONED(limit.rlim_max); 1868} 1869 1870TEST(MemorySanitizer, getrusage) { 1871 struct rusage usage; 1872 __msan_poison(&usage, sizeof(usage)); 1873 int result = getrusage(RUSAGE_SELF, &usage); 1874 assert(result == 0); 1875 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 1876 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 1877 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 1878 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 1879 EXPECT_NOT_POISONED(usage.ru_maxrss); 1880 EXPECT_NOT_POISONED(usage.ru_minflt); 1881 EXPECT_NOT_POISONED(usage.ru_majflt); 1882 EXPECT_NOT_POISONED(usage.ru_inblock); 1883 EXPECT_NOT_POISONED(usage.ru_oublock); 1884 EXPECT_NOT_POISONED(usage.ru_nvcsw); 1885 EXPECT_NOT_POISONED(usage.ru_nivcsw); 1886} 1887 1888#ifdef __GLIBC__ 1889extern char *program_invocation_name; 1890#else // __GLIBC__ 1891# error "TODO: port this" 1892#endif 1893 1894static void dladdr_testfn() {} 1895 1896TEST(MemorySanitizer, dladdr) { 1897 Dl_info info; 1898 __msan_poison(&info, sizeof(info)); 1899 int result = dladdr((const void*)dladdr_testfn, &info); 1900 assert(result != 0); 1901 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 1902 if (info.dli_fname) 1903 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 1904 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 1905 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 1906 if (info.dli_sname) 1907 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 1908 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 1909} 1910 1911static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 1912 (*(int *)data)++; 1913 EXPECT_NOT_POISONED(info->dlpi_addr); 1914 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 1915 EXPECT_NOT_POISONED(info->dlpi_phnum); 1916 for (int i = 0; i < info->dlpi_phnum; ++i) 1917 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 1918 return 0; 1919} 1920 1921#ifndef MSAN_TEST_DISABLE_DLOPEN 1922 1923// Compute the path to our loadable DSO. We assume it's in the same 1924// directory. Only use string routines that we intercept so far to do this. 1925static int PathToLoadable(char *buf, size_t sz) { 1926 const char *basename = "libmsan_loadable.x86_64.so"; 1927 char *argv0 = program_invocation_name; 1928 char *last_slash = strrchr(argv0, '/'); 1929 assert(last_slash); 1930 int res = 1931 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 1932 return res < sz ? 0 : res; 1933} 1934 1935TEST(MemorySanitizer, dl_iterate_phdr) { 1936 char path[4096]; 1937 int res = PathToLoadable(path, sizeof(path)); 1938 assert(!res); 1939 1940 // Having at least one dlopen'ed library in the process makes this more 1941 // entertaining. 1942 void *lib = dlopen(path, RTLD_LAZY); 1943 ASSERT_NE((void*)0, lib); 1944 1945 int count = 0; 1946 int result = dl_iterate_phdr(dl_phdr_callback, &count); 1947 assert(count > 0); 1948 1949 dlclose(lib); 1950} 1951 1952 1953TEST(MemorySanitizer, dlopen) { 1954 char path[4096]; 1955 int res = PathToLoadable(path, sizeof(path)); 1956 assert(!res); 1957 1958 // We need to clear shadow for globals when doing dlopen. In order to test 1959 // this, we have to poison the shadow for the DSO before we load it. In 1960 // general this is difficult, but the loader tends to reload things in the 1961 // same place, so we open, close, and then reopen. The global should always 1962 // start out clean after dlopen. 1963 for (int i = 0; i < 2; i++) { 1964 void *lib = dlopen(path, RTLD_LAZY); 1965 if (lib == NULL) { 1966 printf("dlerror: %s\n", dlerror()); 1967 assert(lib != NULL); 1968 } 1969 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 1970 assert(get_dso_global); 1971 void **dso_global = get_dso_global(); 1972 EXPECT_NOT_POISONED(*dso_global); 1973 __msan_poison(dso_global, sizeof(*dso_global)); 1974 EXPECT_POISONED(*dso_global); 1975 dlclose(lib); 1976 } 1977} 1978 1979// Regression test for a crash in dlopen() interceptor. 1980TEST(MemorySanitizer, dlopenFailed) { 1981 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 1982 void *lib = dlopen(path, RTLD_LAZY); 1983 ASSERT_EQ(0, lib); 1984} 1985 1986#endif // MSAN_TEST_DISABLE_DLOPEN 1987 1988TEST(MemorySanitizer, scanf) { 1989 const char *input = "42 hello"; 1990 int* d = new int; 1991 char* s = new char[7]; 1992 int res = sscanf(input, "%d %5s", d, s); 1993 printf("res %d\n", res); 1994 assert(res == 2); 1995 EXPECT_NOT_POISONED(*d); 1996 EXPECT_NOT_POISONED(s[0]); 1997 EXPECT_NOT_POISONED(s[1]); 1998 EXPECT_NOT_POISONED(s[2]); 1999 EXPECT_NOT_POISONED(s[3]); 2000 EXPECT_NOT_POISONED(s[4]); 2001 EXPECT_NOT_POISONED(s[5]); 2002 EXPECT_POISONED(s[6]); 2003 delete s; 2004 delete d; 2005} 2006 2007static void *SimpleThread_threadfn(void* data) { 2008 return new int; 2009} 2010 2011TEST(MemorySanitizer, SimpleThread) { 2012 pthread_t t; 2013 void *p; 2014 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2015 assert(!res); 2016 EXPECT_NOT_POISONED(t); 2017 res = pthread_join(t, &p); 2018 assert(!res); 2019 if (!__msan_has_dynamic_component()) // FIXME: intercept pthread_join (?). 2020 __msan_unpoison(&p, sizeof(p)); 2021 delete (int*)p; 2022} 2023 2024static void *SmallStackThread_threadfn(void* data) { 2025 return 0; 2026} 2027 2028TEST(MemorySanitizer, SmallStackThread) { 2029 pthread_attr_t attr; 2030 pthread_t t; 2031 void *p; 2032 int res; 2033 res = pthread_attr_init(&attr); 2034 ASSERT_EQ(0, res); 2035 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2036 ASSERT_EQ(0, res); 2037 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2038 ASSERT_EQ(0, res); 2039 res = pthread_join(t, &p); 2040 ASSERT_EQ(0, res); 2041 res = pthread_attr_destroy(&attr); 2042 ASSERT_EQ(0, res); 2043} 2044 2045TEST(MemorySanitizer, PreAllocatedStackThread) { 2046 pthread_attr_t attr; 2047 pthread_t t; 2048 int res; 2049 res = pthread_attr_init(&attr); 2050 ASSERT_EQ(0, res); 2051 void *stack; 2052 const size_t kStackSize = 64 * 1024; 2053 res = posix_memalign(&stack, 4096, kStackSize); 2054 ASSERT_EQ(0, res); 2055 res = pthread_attr_setstack(&attr, stack, kStackSize); 2056 ASSERT_EQ(0, res); 2057 // A small self-allocated stack can not be extended by the tool. 2058 // In this case pthread_create is expected to fail. 2059 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2060 EXPECT_NE(0, res); 2061 res = pthread_attr_destroy(&attr); 2062 ASSERT_EQ(0, res); 2063} 2064 2065TEST(MemorySanitizer, pthread_getschedparam) { 2066 int policy; 2067 struct sched_param param; 2068 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2069 ASSERT_EQ(0, res); 2070 EXPECT_NOT_POISONED(policy); 2071 EXPECT_NOT_POISONED(param.sched_priority); 2072} 2073 2074TEST(MemorySanitizer, pthread_key_create) { 2075 pthread_key_t key; 2076 int res = pthread_key_create(&key, NULL); 2077 assert(!res); 2078 EXPECT_NOT_POISONED(key); 2079 res = pthread_key_delete(key); 2080 assert(!res); 2081} 2082 2083TEST(MemorySanitizer, posix_memalign) { 2084 void *p; 2085 EXPECT_POISONED(p); 2086 int res = posix_memalign(&p, 4096, 13); 2087 ASSERT_EQ(0, res); 2088 EXPECT_NOT_POISONED(p); 2089 free(p); 2090} 2091 2092TEST(MemorySanitizer, inet_pton) { 2093 const char *s = "1:0:0:0:0:0:0:8"; 2094 unsigned char buf[sizeof(struct in6_addr)]; 2095 int res = inet_pton(AF_INET6, s, buf); 2096 ASSERT_EQ(1, res); 2097 EXPECT_NOT_POISONED(buf[0]); 2098 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2099 2100 char s_out[INET6_ADDRSTRLEN]; 2101 EXPECT_POISONED(s_out[3]); 2102 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2103 ASSERT_NE((void*)0, q); 2104 EXPECT_NOT_POISONED(s_out[3]); 2105} 2106 2107TEST(MemorySanitizer, inet_aton) { 2108 const char *s = "127.0.0.1"; 2109 struct in_addr in[2]; 2110 int res = inet_aton(s, in); 2111 ASSERT_NE(0, res); 2112 EXPECT_NOT_POISONED(in[0]); 2113 EXPECT_POISONED(*(char *)(in + 1)); 2114} 2115 2116TEST(MemorySanitizer, uname) { 2117 struct utsname u; 2118 int res = uname(&u); 2119 assert(!res); 2120 EXPECT_NOT_POISONED(strlen(u.sysname)); 2121 EXPECT_NOT_POISONED(strlen(u.nodename)); 2122 EXPECT_NOT_POISONED(strlen(u.release)); 2123 EXPECT_NOT_POISONED(strlen(u.version)); 2124 EXPECT_NOT_POISONED(strlen(u.machine)); 2125} 2126 2127TEST(MemorySanitizer, gethostname) { 2128 char buf[100]; 2129 int res = gethostname(buf, 100); 2130 assert(!res); 2131 EXPECT_NOT_POISONED(strlen(buf)); 2132} 2133 2134TEST(MemorySanitizer, sysinfo) { 2135 struct sysinfo info; 2136 int res = sysinfo(&info); 2137 assert(!res); 2138 EXPECT_NOT_POISONED(info); 2139} 2140 2141TEST(MemorySanitizer, getpwuid) { 2142 struct passwd *p = getpwuid(0); // root 2143 assert(p); 2144 EXPECT_NOT_POISONED(p->pw_name); 2145 assert(p->pw_name); 2146 EXPECT_NOT_POISONED(p->pw_name[0]); 2147 EXPECT_NOT_POISONED(p->pw_uid); 2148 assert(p->pw_uid == 0); 2149} 2150 2151TEST(MemorySanitizer, getpwnam_r) { 2152 struct passwd pwd; 2153 struct passwd *pwdres; 2154 char buf[10000]; 2155 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2156 assert(!res); 2157 EXPECT_NOT_POISONED(pwd.pw_name); 2158 assert(pwd.pw_name); 2159 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2160 EXPECT_NOT_POISONED(pwd.pw_uid); 2161 assert(pwd.pw_uid == 0); 2162} 2163 2164TEST(MemorySanitizer, getpwnam_r_positive) { 2165 struct passwd pwd; 2166 struct passwd *pwdres; 2167 char s[5]; 2168 strncpy(s, "abcd", 5); 2169 __msan_poison(s, 5); 2170 char buf[10000]; 2171 int res; 2172 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2173} 2174 2175TEST(MemorySanitizer, getgrnam_r) { 2176 struct group grp; 2177 struct group *grpres; 2178 char buf[10000]; 2179 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2180 assert(!res); 2181 EXPECT_NOT_POISONED(grp.gr_name); 2182 assert(grp.gr_name); 2183 EXPECT_NOT_POISONED(grp.gr_name[0]); 2184 EXPECT_NOT_POISONED(grp.gr_gid); 2185} 2186 2187template<class T> 2188static bool applySlt(T value, T shadow) { 2189 __msan_partial_poison(&value, &shadow, sizeof(T)); 2190 volatile bool zzz = true; 2191 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2192 // a shift-and-trunc to get at the highest bit. 2193 volatile bool v = value < 0 || zzz; 2194 return v; 2195} 2196 2197TEST(MemorySanitizer, SignedCompareWithZero) { 2198 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2199 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2200 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2201 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2202 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2203 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2204} 2205 2206template <class T, class S> 2207static T poisoned(T Va, S Sa) { 2208 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2209 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2210 T a; 2211 a = Va; 2212 __msan_partial_poison(&a, &Sa, sizeof(T)); 2213 return a; 2214} 2215 2216TEST(MemorySanitizer, ICmpRelational) { 2217 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2218 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2219 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2220 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2221 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2222 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2223 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2224 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2225 poisoned(-1, 0xFFFFFFFFU)); 2226 2227 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2228 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2229 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2230 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2231 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2232 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2233 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2234 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2235 poisoned(-1, 0xFFFFFFFFU)); 2236 2237 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2238 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2239 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2240 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2241 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2242 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2243 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2244 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2245 poisoned(-1, 0xFFFFFFFFU)); 2246 2247 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2248 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2249 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2250 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2251 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2252 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2253 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2254 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2255 poisoned(-1, 0xFFFFFFFFU)); 2256 2257 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2258 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2259 2260 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2261} 2262 2263#if MSAN_HAS_M128 2264TEST(MemorySanitizer, ICmpVectorRelational) { 2265 EXPECT_NOT_POISONED( 2266 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2267 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2268 EXPECT_NOT_POISONED( 2269 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2270 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2271 EXPECT_POISONED( 2272 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2273 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2274 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2275 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2276} 2277#endif 2278 2279// Volatile bitfield store is implemented as load-mask-store 2280// Test that we don't warn on the store of (uninitialized) padding. 2281struct VolatileBitfieldStruct { 2282 volatile unsigned x : 1; 2283 unsigned y : 1; 2284}; 2285 2286TEST(MemorySanitizer, VolatileBitfield) { 2287 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2288 S->x = 1; 2289 EXPECT_NOT_POISONED((unsigned)S->x); 2290 EXPECT_POISONED((unsigned)S->y); 2291} 2292 2293TEST(MemorySanitizer, UnalignedLoad) { 2294 char x[32]; 2295 memset(x + 8, 0, 16); 2296 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2297 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2298 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2299 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2300 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2301 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2302 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2303 2304 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2305 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2306 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2307 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2308 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2309 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2310 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2311 2312 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2313 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2314 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2315 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2316 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2317 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2318 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2319 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2320 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2321} 2322 2323TEST(MemorySanitizer, UnalignedStore16) { 2324 char x[5]; 2325 U2 y = 0; 2326 __msan_poison(&y, 1); 2327 __sanitizer_unaligned_store16(x + 1, y); 2328 EXPECT_POISONED(x[0]); 2329 EXPECT_POISONED(x[1]); 2330 EXPECT_NOT_POISONED(x[2]); 2331 EXPECT_POISONED(x[3]); 2332 EXPECT_POISONED(x[4]); 2333} 2334 2335TEST(MemorySanitizer, UnalignedStore32) { 2336 char x[8]; 2337 U4 y4 = 0; 2338 __msan_poison(&y4, 2); 2339 __sanitizer_unaligned_store32(x+3, y4); 2340 EXPECT_POISONED(x[0]); 2341 EXPECT_POISONED(x[1]); 2342 EXPECT_POISONED(x[2]); 2343 EXPECT_POISONED(x[3]); 2344 EXPECT_POISONED(x[4]); 2345 EXPECT_NOT_POISONED(x[5]); 2346 EXPECT_NOT_POISONED(x[6]); 2347 EXPECT_POISONED(x[7]); 2348} 2349 2350TEST(MemorySanitizer, UnalignedStore64) { 2351 char x[16]; 2352 U8 y = 0; 2353 __msan_poison(&y, 3); 2354 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2355 __sanitizer_unaligned_store64(x+3, y); 2356 EXPECT_POISONED(x[0]); 2357 EXPECT_POISONED(x[1]); 2358 EXPECT_POISONED(x[2]); 2359 EXPECT_POISONED(x[3]); 2360 EXPECT_POISONED(x[4]); 2361 EXPECT_POISONED(x[5]); 2362 EXPECT_NOT_POISONED(x[6]); 2363 EXPECT_NOT_POISONED(x[7]); 2364 EXPECT_NOT_POISONED(x[8]); 2365 EXPECT_POISONED(x[9]); 2366 EXPECT_NOT_POISONED(x[10]); 2367 EXPECT_POISONED(x[11]); 2368} 2369 2370TEST(MemorySanitizerDr, StoreInDSOTest) { 2371 if (!__msan_has_dynamic_component()) return; 2372 char* s = new char[10]; 2373 dso_memfill(s, 9); 2374 EXPECT_NOT_POISONED(s[5]); 2375 EXPECT_POISONED(s[9]); 2376} 2377 2378int return_poisoned_int() { 2379 return ReturnPoisoned<U8>(); 2380} 2381 2382TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2383 if (!__msan_has_dynamic_component()) return; 2384 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2385} 2386 2387NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2388 EXPECT_POISONED(x); 2389 EXPECT_POISONED(y); 2390 EXPECT_POISONED(z); 2391 return 0; 2392} 2393 2394static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2395 EXPECT_NOT_POISONED(x); 2396 EXPECT_NOT_POISONED(y); 2397 EXPECT_NOT_POISONED(z); 2398 return 0; 2399} 2400 2401TEST(MemorySanitizerDr, CallFromDSOTest) { 2402 if (!__msan_has_dynamic_component()) return; 2403 S8* x = GetPoisoned<S8>(); 2404 S8* y = GetPoisoned<S8>(); 2405 S8* z = GetPoisoned<S8>(); 2406 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2407 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2408} 2409 2410static void StackStoreInDSOFn(int* x, int* y) { 2411 EXPECT_NOT_POISONED(*x); 2412 EXPECT_NOT_POISONED(*y); 2413} 2414 2415TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2416 if (!__msan_has_dynamic_component()) return; 2417 dso_stack_store(StackStoreInDSOFn, 1); 2418} 2419 2420TEST(MemorySanitizerOrigins, SetGet) { 2421 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2422 if (!TrackingOrigins()) return; 2423 int x; 2424 __msan_set_origin(&x, sizeof(x), 1234); 2425 EXPECT_EQ(1234, __msan_get_origin(&x)); 2426 __msan_set_origin(&x, sizeof(x), 5678); 2427 EXPECT_EQ(5678, __msan_get_origin(&x)); 2428 __msan_set_origin(&x, sizeof(x), 0); 2429 EXPECT_EQ(0, __msan_get_origin(&x)); 2430} 2431 2432namespace { 2433struct S { 2434 U4 dummy; 2435 U2 a; 2436 U2 b; 2437}; 2438 2439// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2440TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2441 if (!TrackingOrigins()) return; 2442 2443 S s; 2444 U4 origin = rand(); // NOLINT 2445 s.a = *GetPoisonedO<U2>(0, origin); 2446 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2447 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2448 2449 s.b = 42; 2450 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2451 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2452} 2453} // namespace 2454 2455template<class T, class BinaryOp> 2456INLINE 2457void BinaryOpOriginTest(BinaryOp op) { 2458 U4 ox = rand(); //NOLINT 2459 U4 oy = rand(); //NOLINT 2460 T *x = GetPoisonedO<T>(0, ox, 0); 2461 T *y = GetPoisonedO<T>(1, oy, 0); 2462 T *z = GetPoisonedO<T>(2, 0, 0); 2463 2464 *z = op(*x, *y); 2465 U4 origin = __msan_get_origin(z); 2466 EXPECT_POISONED_O(*z, origin); 2467 EXPECT_EQ(true, origin == ox || origin == oy); 2468 2469 // y is poisoned, x is not. 2470 *x = 10101; 2471 *y = *GetPoisonedO<T>(1, oy); 2472 break_optimization(x); 2473 __msan_set_origin(z, sizeof(*z), 0); 2474 *z = op(*x, *y); 2475 EXPECT_POISONED_O(*z, oy); 2476 EXPECT_EQ(__msan_get_origin(z), oy); 2477 2478 // x is poisoned, y is not. 2479 *x = *GetPoisonedO<T>(0, ox); 2480 *y = 10101010; 2481 break_optimization(y); 2482 __msan_set_origin(z, sizeof(*z), 0); 2483 *z = op(*x, *y); 2484 EXPECT_POISONED_O(*z, ox); 2485 EXPECT_EQ(__msan_get_origin(z), ox); 2486} 2487 2488template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2489template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2490template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2491template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2492template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2493template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2494 2495TEST(MemorySanitizerOrigins, BinaryOp) { 2496 if (!TrackingOrigins()) return; 2497 BinaryOpOriginTest<S8>(XOR<S8>); 2498 BinaryOpOriginTest<U8>(ADD<U8>); 2499 BinaryOpOriginTest<S4>(SUB<S4>); 2500 BinaryOpOriginTest<S4>(MUL<S4>); 2501 BinaryOpOriginTest<U4>(OR<U4>); 2502 BinaryOpOriginTest<U4>(AND<U4>); 2503 BinaryOpOriginTest<double>(ADD<U4>); 2504 BinaryOpOriginTest<float>(ADD<S4>); 2505 BinaryOpOriginTest<double>(ADD<double>); 2506 BinaryOpOriginTest<float>(ADD<double>); 2507} 2508 2509TEST(MemorySanitizerOrigins, Unary) { 2510 if (!TrackingOrigins()) return; 2511 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2512 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2513 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2514 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2515 2516 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2517 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2518 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2519 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2520 2521 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2522 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2523 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2524 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2525 2526 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2527 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2528 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2529 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2530 2531 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2532 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2533} 2534 2535TEST(MemorySanitizerOrigins, EQ) { 2536 if (!TrackingOrigins()) return; 2537 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2538 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2539 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2540} 2541 2542TEST(MemorySanitizerOrigins, DIV) { 2543 if (!TrackingOrigins()) return; 2544 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2545 unsigned o = __LINE__; 2546 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2547} 2548 2549TEST(MemorySanitizerOrigins, SHIFT) { 2550 if (!TrackingOrigins()) return; 2551 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2552 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2553 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2554 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2555 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2556 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2557} 2558 2559template<class T, int N> 2560void MemCpyTest() { 2561 int ox = __LINE__; 2562 T *x = new T[N]; 2563 T *y = new T[N]; 2564 T *z = new T[N]; 2565 T *q = new T[N]; 2566 __msan_poison(x, N * sizeof(T)); 2567 __msan_set_origin(x, N * sizeof(T), ox); 2568 __msan_set_origin(y, N * sizeof(T), 777777); 2569 __msan_set_origin(z, N * sizeof(T), 888888); 2570 EXPECT_NOT_POISONED(x); 2571 memcpy(y, x, N * sizeof(T)); 2572 EXPECT_POISONED_O(y[0], ox); 2573 EXPECT_POISONED_O(y[N/2], ox); 2574 EXPECT_POISONED_O(y[N-1], ox); 2575 EXPECT_NOT_POISONED(x); 2576 void *res = mempcpy(q, x, N * sizeof(T)); 2577 ASSERT_EQ(q + N, res); 2578 EXPECT_POISONED_O(q[0], ox); 2579 EXPECT_POISONED_O(q[N/2], ox); 2580 EXPECT_POISONED_O(q[N-1], ox); 2581 EXPECT_NOT_POISONED(x); 2582 memmove(z, x, N * sizeof(T)); 2583 EXPECT_POISONED_O(z[0], ox); 2584 EXPECT_POISONED_O(z[N/2], ox); 2585 EXPECT_POISONED_O(z[N-1], ox); 2586} 2587 2588TEST(MemorySanitizerOrigins, LargeMemCpy) { 2589 if (!TrackingOrigins()) return; 2590 MemCpyTest<U1, 10000>(); 2591 MemCpyTest<U8, 10000>(); 2592} 2593 2594TEST(MemorySanitizerOrigins, SmallMemCpy) { 2595 if (!TrackingOrigins()) return; 2596 MemCpyTest<U8, 1>(); 2597 MemCpyTest<U8, 2>(); 2598 MemCpyTest<U8, 3>(); 2599} 2600 2601TEST(MemorySanitizerOrigins, Select) { 2602 if (!TrackingOrigins()) return; 2603 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2604 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2605 S4 x; 2606 break_optimization(&x); 2607 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2608 2609 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2610 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2611} 2612 2613extern "C" 2614NOINLINE char AllocaTO() { 2615 int ar[100]; 2616 break_optimization(ar); 2617 return ar[10]; 2618 // fprintf(stderr, "Descr: %s\n", 2619 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2620} 2621 2622TEST(MemorySanitizerOrigins, Alloca) { 2623 if (!TrackingOrigins()) return; 2624 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2625 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2626 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2627 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2628} 2629 2630// FIXME: replace with a lit-like test. 2631TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2632 if (!TrackingOrigins()) return; 2633 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2634} 2635 2636NOINLINE int RetvalOriginTest(U4 origin) { 2637 int *a = new int; 2638 break_optimization(a); 2639 __msan_set_origin(a, sizeof(*a), origin); 2640 int res = *a; 2641 delete a; 2642 return res; 2643} 2644 2645TEST(MemorySanitizerOrigins, Retval) { 2646 if (!TrackingOrigins()) return; 2647 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2648} 2649 2650NOINLINE void ParamOriginTest(int param, U4 origin) { 2651 EXPECT_POISONED_O(param, origin); 2652} 2653 2654TEST(MemorySanitizerOrigins, Param) { 2655 if (!TrackingOrigins()) return; 2656 int *a = new int; 2657 U4 origin = __LINE__; 2658 break_optimization(a); 2659 __msan_set_origin(a, sizeof(*a), origin); 2660 ParamOriginTest(*a, origin); 2661 delete a; 2662} 2663 2664TEST(MemorySanitizerOrigins, Invoke) { 2665 if (!TrackingOrigins()) return; 2666 StructWithDtor s; // Will cause the calls to become invokes. 2667 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2668} 2669 2670TEST(MemorySanitizerOrigins, strlen) { 2671 S8 alignment; 2672 break_optimization(&alignment); 2673 char x[4] = {'a', 'b', 0, 0}; 2674 __msan_poison(&x[2], 1); 2675 U4 origin = __LINE__; 2676 __msan_set_origin(x, sizeof(x), origin); 2677 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2678} 2679 2680TEST(MemorySanitizerOrigins, wcslen) { 2681 wchar_t w[3] = {'a', 'b', 0}; 2682 U4 origin = __LINE__; 2683 __msan_set_origin(w, sizeof(w), origin); 2684 __msan_poison(&w[2], sizeof(wchar_t)); 2685 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 2686} 2687 2688#if MSAN_HAS_M128 2689TEST(MemorySanitizerOrigins, StoreIntrinsic) { 2690 __m128 x, y; 2691 U4 origin = __LINE__; 2692 __msan_set_origin(&x, sizeof(x), origin); 2693 __msan_poison(&x, sizeof(x)); 2694 __builtin_ia32_storeups((float*)&y, x); 2695 EXPECT_POISONED_O(y, origin); 2696} 2697#endif 2698 2699NOINLINE void RecursiveMalloc(int depth) { 2700 static int count; 2701 count++; 2702 if ((count % (1024 * 1024)) == 0) 2703 printf("RecursiveMalloc: %d\n", count); 2704 int *x1 = new int; 2705 int *x2 = new int; 2706 break_optimization(x1); 2707 break_optimization(x2); 2708 if (depth > 0) { 2709 RecursiveMalloc(depth-1); 2710 RecursiveMalloc(depth-1); 2711 } 2712 delete x1; 2713 delete x2; 2714} 2715 2716TEST(MemorySanitizer, CallocOverflow) { 2717 size_t kArraySize = 4096; 2718 volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 2719 volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 2720 void *p = calloc(kArraySize, kArraySize2); // Should return 0. 2721 EXPECT_EQ(0L, Ident(p)); 2722} 2723 2724TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 2725 RecursiveMalloc(22); 2726} 2727