msan_test.cc revision 5c48a8c4a8b3f7cd3f03f26c6aadc0ee606fc9b7
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, strcmp) { 528 char s1[10]; 529 char s2[10]; 530 strncpy(s1, "foo", 10); 531 s2[0] = 'f'; 532 s2[1] = 'n'; 533 EXPECT_GT(strcmp(s1, s2), 0); 534 s2[1] = 'o'; 535 int res; 536 EXPECT_UMR(res = strcmp(s1, s2)); 537 EXPECT_NOT_POISONED(res); 538 EXPECT_EQ(strncmp(s1, s2, 1), 0); 539} 540 541TEST(MemorySanitizer, LargeRet) { 542 LargeStruct a = LargeRetTest(); 543 EXPECT_POISONED(a.x[0]); 544 EXPECT_POISONED(a.x[9]); 545} 546 547TEST(MemorySanitizer, fread) { 548 char *x = new char[32]; 549 FILE *f = fopen("/proc/self/stat", "r"); 550 assert(f); 551 fread(x, 1, 32, f); 552 EXPECT_NOT_POISONED(x[0]); 553 EXPECT_NOT_POISONED(x[16]); 554 EXPECT_NOT_POISONED(x[31]); 555 fclose(f); 556 delete x; 557} 558 559TEST(MemorySanitizer, read) { 560 char *x = new char[32]; 561 int fd = open("/proc/self/stat", O_RDONLY); 562 assert(fd > 0); 563 int sz = read(fd, x, 32); 564 assert(sz == 32); 565 EXPECT_NOT_POISONED(x[0]); 566 EXPECT_NOT_POISONED(x[16]); 567 EXPECT_NOT_POISONED(x[31]); 568 close(fd); 569 delete x; 570} 571 572TEST(MemorySanitizer, pread) { 573 char *x = new char[32]; 574 int fd = open("/proc/self/stat", O_RDONLY); 575 assert(fd > 0); 576 int sz = pread(fd, x, 32, 0); 577 assert(sz == 32); 578 EXPECT_NOT_POISONED(x[0]); 579 EXPECT_NOT_POISONED(x[16]); 580 EXPECT_NOT_POISONED(x[31]); 581 close(fd); 582 delete x; 583} 584 585TEST(MemorySanitizer, readv) { 586 char buf[2011]; 587 struct iovec iov[2]; 588 iov[0].iov_base = buf + 1; 589 iov[0].iov_len = 5; 590 iov[1].iov_base = buf + 10; 591 iov[1].iov_len = 2000; 592 int fd = open("/proc/self/stat", O_RDONLY); 593 assert(fd > 0); 594 int sz = readv(fd, iov, 2); 595 ASSERT_LT(sz, 5 + 2000); 596 ASSERT_GT(sz, iov[0].iov_len); 597 EXPECT_POISONED(buf[0]); 598 EXPECT_NOT_POISONED(buf[1]); 599 EXPECT_NOT_POISONED(buf[5]); 600 EXPECT_POISONED(buf[6]); 601 EXPECT_POISONED(buf[9]); 602 EXPECT_NOT_POISONED(buf[10]); 603 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 604 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 605 close(fd); 606} 607 608TEST(MemorySanitizer, preadv) { 609 char buf[2011]; 610 struct iovec iov[2]; 611 iov[0].iov_base = buf + 1; 612 iov[0].iov_len = 5; 613 iov[1].iov_base = buf + 10; 614 iov[1].iov_len = 2000; 615 int fd = open("/proc/self/stat", O_RDONLY); 616 assert(fd > 0); 617 int sz = preadv(fd, iov, 2, 3); 618 ASSERT_LT(sz, 5 + 2000); 619 ASSERT_GT(sz, iov[0].iov_len); 620 EXPECT_POISONED(buf[0]); 621 EXPECT_NOT_POISONED(buf[1]); 622 EXPECT_NOT_POISONED(buf[5]); 623 EXPECT_POISONED(buf[6]); 624 EXPECT_POISONED(buf[9]); 625 EXPECT_NOT_POISONED(buf[10]); 626 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 627 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 628 close(fd); 629} 630 631// FIXME: fails now. 632TEST(MemorySanitizer, DISABLED_ioctl) { 633 struct winsize ws; 634 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 635 EXPECT_NOT_POISONED(ws.ws_col); 636} 637 638TEST(MemorySanitizer, readlink) { 639 char *x = new char[1000]; 640 readlink("/proc/self/exe", x, 1000); 641 EXPECT_NOT_POISONED(x[0]); 642 delete [] x; 643} 644 645 646TEST(MemorySanitizer, stat) { 647 struct stat* st = new struct stat; 648 int res = stat("/proc/self/stat", st); 649 assert(!res); 650 EXPECT_NOT_POISONED(st->st_dev); 651 EXPECT_NOT_POISONED(st->st_mode); 652 EXPECT_NOT_POISONED(st->st_size); 653} 654 655TEST(MemorySanitizer, statfs) { 656 struct statfs* st = new struct statfs; 657 int res = statfs("/", st); 658 assert(!res); 659 EXPECT_NOT_POISONED(st->f_type); 660 EXPECT_NOT_POISONED(st->f_bfree); 661 EXPECT_NOT_POISONED(st->f_namelen); 662} 663 664TEST(MemorySanitizer, pipe) { 665 int* pipefd = new int[2]; 666 int res = pipe(pipefd); 667 assert(!res); 668 EXPECT_NOT_POISONED(pipefd[0]); 669 EXPECT_NOT_POISONED(pipefd[1]); 670 close(pipefd[0]); 671 close(pipefd[1]); 672} 673 674TEST(MemorySanitizer, pipe2) { 675 int* pipefd = new int[2]; 676 int res = pipe2(pipefd, O_NONBLOCK); 677 assert(!res); 678 EXPECT_NOT_POISONED(pipefd[0]); 679 EXPECT_NOT_POISONED(pipefd[1]); 680 close(pipefd[0]); 681 close(pipefd[1]); 682} 683 684TEST(MemorySanitizer, socketpair) { 685 int sv[2]; 686 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 687 assert(!res); 688 EXPECT_NOT_POISONED(sv[0]); 689 EXPECT_NOT_POISONED(sv[1]); 690 close(sv[0]); 691 close(sv[1]); 692} 693 694TEST(MemorySanitizer, bind_getsockname) { 695 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 696 697 struct sockaddr_in sai; 698 memset(&sai, 0, sizeof(sai)); 699 sai.sin_family = AF_UNIX; 700 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 701 702 assert(!res); 703 char buf[200]; 704 socklen_t addrlen; 705 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 706 707 addrlen = sizeof(buf); 708 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 709 EXPECT_NOT_POISONED(addrlen); 710 EXPECT_NOT_POISONED(buf[0]); 711 EXPECT_NOT_POISONED(buf[addrlen - 1]); 712 EXPECT_POISONED(buf[addrlen]); 713 close(sock); 714} 715 716TEST(MemorySanitizer, accept) { 717 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 718 ASSERT_LT(0, listen_socket); 719 720 struct sockaddr_in sai; 721 sai.sin_family = AF_INET; 722 sai.sin_port = 0; 723 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 724 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 725 ASSERT_EQ(0, res); 726 727 res = listen(listen_socket, 1); 728 ASSERT_EQ(0, res); 729 730 socklen_t sz = sizeof(sai); 731 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 732 ASSERT_EQ(0, res); 733 ASSERT_EQ(sizeof(sai), sz); 734 735 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 736 ASSERT_LT(0, connect_socket); 737 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 738 ASSERT_EQ(0, res); 739 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 740 ASSERT_EQ(-1, res); 741 ASSERT_EQ(EINPROGRESS, errno); 742 743 __msan_poison(&sai, sizeof(sai)); 744 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 745 ASSERT_LT(0, new_sock); 746 ASSERT_EQ(sizeof(sai), sz); 747 EXPECT_NOT_POISONED(sai); 748 749 __msan_poison(&sai, sizeof(sai)); 750 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 751 ASSERT_EQ(0, res); 752 ASSERT_EQ(sizeof(sai), sz); 753 EXPECT_NOT_POISONED(sai); 754 755 close(new_sock); 756 close(connect_socket); 757 close(listen_socket); 758} 759 760TEST(MemorySanitizer, getaddrinfo) { 761 struct addrinfo *ai; 762 struct addrinfo hints; 763 memset(&hints, 0, sizeof(hints)); 764 hints.ai_family = AF_INET; 765 int res = getaddrinfo("localhost", NULL, &hints, &ai); 766 ASSERT_EQ(0, res); 767 EXPECT_NOT_POISONED(*ai); 768 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 769 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 770} 771 772TEST(MemorySanitizer, getnameinfo) { 773 struct sockaddr_in sai; 774 sai.sin_family = AF_INET; 775 sai.sin_port = 80; 776 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 777 char host[500]; 778 char serv[500]; 779 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 780 sizeof(host), serv, sizeof(serv), 0); 781 ASSERT_EQ(0, res); 782 EXPECT_NOT_POISONED(host[0]); 783 EXPECT_POISONED(host[sizeof(host) - 1]); 784 785 ASSERT_NE(0, strlen(host)); 786 EXPECT_NOT_POISONED(serv[0]); 787 EXPECT_POISONED(serv[sizeof(serv) - 1]); 788 ASSERT_NE(0, strlen(serv)); 789} 790 791#define EXPECT_HOSTENT_NOT_POISONED(he) \ 792 do { \ 793 EXPECT_NOT_POISONED(*(he)); \ 794 ASSERT_NE((void *) 0, (he)->h_name); \ 795 ASSERT_NE((void *) 0, (he)->h_aliases); \ 796 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 797 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 798 char **p = (he)->h_aliases; \ 799 while (*p) { \ 800 EXPECT_NOT_POISONED(strlen(*p)); \ 801 ++p; \ 802 } \ 803 char **q = (he)->h_addr_list; \ 804 while (*q) { \ 805 EXPECT_NOT_POISONED(*q[0]); \ 806 ++q; \ 807 } \ 808 EXPECT_NOT_POISONED(*q); \ 809 } while (0) 810 811TEST(MemorySanitizer, gethostent) { 812 struct hostent *he = gethostent(); 813 ASSERT_NE((void *)NULL, he); 814 EXPECT_HOSTENT_NOT_POISONED(he); 815} 816 817#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 818 819TEST(MemorySanitizer, gethostbyname) { 820 struct hostent *he = gethostbyname("localhost"); 821 ASSERT_NE((void *)NULL, he); 822 EXPECT_HOSTENT_NOT_POISONED(he); 823} 824 825#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 826 827TEST(MemorySanitizer, gethostbyname2) { 828 struct hostent *he = gethostbyname2("localhost", AF_INET); 829 ASSERT_NE((void *)NULL, he); 830 EXPECT_HOSTENT_NOT_POISONED(he); 831} 832 833TEST(MemorySanitizer, gethostbyaddr) { 834 in_addr_t addr = inet_addr("127.0.0.1"); 835 EXPECT_NOT_POISONED(addr); 836 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 837 ASSERT_NE((void *)NULL, he); 838 EXPECT_HOSTENT_NOT_POISONED(he); 839} 840 841TEST(MemorySanitizer, gethostent_r) { 842 char buf[2000]; 843 struct hostent he; 844 struct hostent *result; 845 int err; 846 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 847 ASSERT_EQ(0, res); 848 EXPECT_NOT_POISONED(result); 849 ASSERT_NE((void *)NULL, result); 850 EXPECT_HOSTENT_NOT_POISONED(result); 851 EXPECT_NOT_POISONED(err); 852} 853 854TEST(MemorySanitizer, gethostbyname_r) { 855 char buf[2000]; 856 struct hostent he; 857 struct hostent *result; 858 int err; 859 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &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, gethostbyname2_r) { 868 char buf[2000]; 869 struct hostent he; 870 struct hostent *result; 871 int err; 872 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 873 &result, &err); 874 ASSERT_EQ(0, res); 875 EXPECT_NOT_POISONED(result); 876 ASSERT_NE((void *)NULL, result); 877 EXPECT_HOSTENT_NOT_POISONED(result); 878 EXPECT_NOT_POISONED(err); 879} 880 881TEST(MemorySanitizer, gethostbyaddr_r) { 882 char buf[2000]; 883 struct hostent he; 884 struct hostent *result; 885 int err; 886 in_addr_t addr = inet_addr("127.0.0.1"); 887 EXPECT_NOT_POISONED(addr); 888 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 889 &result, &err); 890 ASSERT_EQ(0, res); 891 EXPECT_NOT_POISONED(result); 892 ASSERT_NE((void *)NULL, result); 893 EXPECT_HOSTENT_NOT_POISONED(result); 894 EXPECT_NOT_POISONED(err); 895} 896 897TEST(MemorySanitizer, getsockopt) { 898 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 899 struct linger l[2]; 900 socklen_t sz = sizeof(l[0]); 901 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 902 ASSERT_EQ(0, res); 903 ASSERT_EQ(sizeof(l[0]), sz); 904 EXPECT_NOT_POISONED(l[0]); 905 EXPECT_POISONED(*(char *)(l + 1)); 906} 907 908TEST(MemorySanitizer, getcwd) { 909 char path[PATH_MAX + 1]; 910 char* res = getcwd(path, sizeof(path)); 911 assert(res); 912 EXPECT_NOT_POISONED(path[0]); 913} 914 915TEST(MemorySanitizer, getcwd_gnu) { 916 char* res = getcwd(NULL, 0); 917 assert(res); 918 EXPECT_NOT_POISONED(res[0]); 919 free(res); 920} 921 922TEST(MemorySanitizer, get_current_dir_name) { 923 char* res = get_current_dir_name(); 924 assert(res); 925 EXPECT_NOT_POISONED(res[0]); 926 free(res); 927} 928 929TEST(MemorySanitizer, confstr) { 930 char buf[3]; 931 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 932 ASSERT_GT(res, sizeof(buf)); 933 EXPECT_NOT_POISONED(buf[0]); 934 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 935 936 char buf2[1000]; 937 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 938 ASSERT_LT(res, sizeof(buf2)); 939 EXPECT_NOT_POISONED(buf2[0]); 940 EXPECT_NOT_POISONED(buf2[res - 1]); 941 EXPECT_POISONED(buf2[res]); 942 ASSERT_EQ(res, strlen(buf2) + 1); 943} 944 945TEST(MemorySanitizer, readdir) { 946 DIR *dir = opendir("."); 947 struct dirent *d = readdir(dir); 948 assert(d); 949 EXPECT_NOT_POISONED(d->d_name[0]); 950 closedir(dir); 951} 952 953TEST(MemorySanitizer, readdir_r) { 954 DIR *dir = opendir("."); 955 struct dirent d; 956 struct dirent *pd; 957 int res = readdir_r(dir, &d, &pd); 958 assert(!res); 959 EXPECT_NOT_POISONED(pd); 960 EXPECT_NOT_POISONED(d.d_name[0]); 961 closedir(dir); 962} 963 964TEST(MemorySanitizer, realpath) { 965 const char* relpath = "."; 966 char path[PATH_MAX + 1]; 967 char* res = realpath(relpath, path); 968 assert(res); 969 EXPECT_NOT_POISONED(path[0]); 970} 971 972TEST(MemorySanitizer, realpath_null) { 973 const char* relpath = "."; 974 char* res = realpath(relpath, NULL); 975 printf("%d, %s\n", errno, strerror(errno)); 976 assert(res); 977 EXPECT_NOT_POISONED(res[0]); 978 free(res); 979} 980 981TEST(MemorySanitizer, canonicalize_file_name) { 982 const char* relpath = "."; 983 char* res = canonicalize_file_name(relpath); 984 assert(res); 985 EXPECT_NOT_POISONED(res[0]); 986 free(res); 987} 988 989extern char **environ; 990 991TEST(MemorySanitizer, setenv) { 992 setenv("AAA", "BBB", 1); 993 for (char **envp = environ; *envp; ++envp) { 994 EXPECT_NOT_POISONED(*envp); 995 EXPECT_NOT_POISONED(*envp[0]); 996 } 997} 998 999TEST(MemorySanitizer, putenv) { 1000 char s[] = "AAA=BBB"; 1001 putenv(s); 1002 for (char **envp = environ; *envp; ++envp) { 1003 EXPECT_NOT_POISONED(*envp); 1004 EXPECT_NOT_POISONED(*envp[0]); 1005 } 1006} 1007 1008TEST(MemorySanitizer, memcpy) { 1009 char* x = new char[2]; 1010 char* y = new char[2]; 1011 x[0] = 1; 1012 x[1] = *GetPoisoned<char>(); 1013 memcpy(y, x, 2); 1014 EXPECT_NOT_POISONED(y[0]); 1015 EXPECT_POISONED(y[1]); 1016} 1017 1018TEST(MemorySanitizer, memmove) { 1019 char* x = new char[2]; 1020 char* y = new char[2]; 1021 x[0] = 1; 1022 x[1] = *GetPoisoned<char>(); 1023 memmove(y, x, 2); 1024 EXPECT_NOT_POISONED(y[0]); 1025 EXPECT_POISONED(y[1]); 1026} 1027 1028TEST(MemorySanitizer, bcopy) { 1029 char* x = new char[2]; 1030 char* y = new char[2]; 1031 x[0] = 1; 1032 x[1] = *GetPoisoned<char>(); 1033 bcopy(x, y, 2); 1034 EXPECT_NOT_POISONED(y[0]); 1035 EXPECT_POISONED(y[1]); 1036} 1037 1038TEST(MemorySanitizer, strdup) { 1039 char buf[4] = "abc"; 1040 __msan_poison(buf + 2, sizeof(*buf)); 1041 char *x = strdup(buf); 1042 EXPECT_NOT_POISONED(x[0]); 1043 EXPECT_NOT_POISONED(x[1]); 1044 EXPECT_POISONED(x[2]); 1045 EXPECT_NOT_POISONED(x[3]); 1046 free(x); 1047} 1048 1049TEST(MemorySanitizer, strndup) { 1050 char buf[4] = "abc"; 1051 __msan_poison(buf + 2, sizeof(*buf)); 1052 char *x = strndup(buf, 3); 1053 EXPECT_NOT_POISONED(x[0]); 1054 EXPECT_NOT_POISONED(x[1]); 1055 EXPECT_POISONED(x[2]); 1056 EXPECT_NOT_POISONED(x[3]); 1057 free(x); 1058} 1059 1060TEST(MemorySanitizer, strndup_short) { 1061 char buf[4] = "abc"; 1062 __msan_poison(buf + 1, sizeof(*buf)); 1063 __msan_poison(buf + 2, sizeof(*buf)); 1064 char *x = strndup(buf, 2); 1065 EXPECT_NOT_POISONED(x[0]); 1066 EXPECT_POISONED(x[1]); 1067 EXPECT_NOT_POISONED(x[2]); 1068 free(x); 1069} 1070 1071 1072template<class T, int size> 1073void TestOverlapMemmove() { 1074 T *x = new T[size]; 1075 assert(size >= 3); 1076 x[2] = 0; 1077 memmove(x, x + 1, (size - 1) * sizeof(T)); 1078 EXPECT_NOT_POISONED(x[1]); 1079 if (!__msan_has_dynamic_component()) { 1080 // FIXME: under DR we will lose this information 1081 // because accesses in memmove will unpoisin the shadow. 1082 // We need to use our own memove implementation instead of libc's. 1083 EXPECT_POISONED(x[0]); 1084 EXPECT_POISONED(x[2]); 1085 } 1086 delete [] x; 1087} 1088 1089TEST(MemorySanitizer, overlap_memmove) { 1090 TestOverlapMemmove<U1, 10>(); 1091 TestOverlapMemmove<U1, 1000>(); 1092 TestOverlapMemmove<U8, 4>(); 1093 TestOverlapMemmove<U8, 1000>(); 1094} 1095 1096TEST(MemorySanitizer, strcpy) { // NOLINT 1097 char* x = new char[3]; 1098 char* y = new char[3]; 1099 x[0] = 'a'; 1100 x[1] = *GetPoisoned<char>(1, 1); 1101 x[2] = 0; 1102 strcpy(y, x); // NOLINT 1103 EXPECT_NOT_POISONED(y[0]); 1104 EXPECT_POISONED(y[1]); 1105 EXPECT_NOT_POISONED(y[2]); 1106} 1107 1108TEST(MemorySanitizer, strncpy) { // NOLINT 1109 char* x = new char[3]; 1110 char* y = new char[3]; 1111 x[0] = 'a'; 1112 x[1] = *GetPoisoned<char>(1, 1); 1113 x[2] = 0; 1114 strncpy(y, x, 2); // NOLINT 1115 EXPECT_NOT_POISONED(y[0]); 1116 EXPECT_POISONED(y[1]); 1117 EXPECT_POISONED(y[2]); 1118} 1119 1120TEST(MemorySanitizer, stpcpy) { // NOLINT 1121 char* x = new char[3]; 1122 char* y = new char[3]; 1123 x[0] = 'a'; 1124 x[1] = *GetPoisoned<char>(1, 1); 1125 x[2] = 0; 1126 char *res = stpcpy(y, x); // NOLINT 1127 ASSERT_EQ(res, y + 2); 1128 EXPECT_NOT_POISONED(y[0]); 1129 EXPECT_POISONED(y[1]); 1130 EXPECT_NOT_POISONED(y[2]); 1131} 1132 1133TEST(MemorySanitizer, strtol) { 1134 char *e; 1135 assert(1 == strtol("1", &e, 10)); 1136 EXPECT_NOT_POISONED((S8) e); 1137} 1138 1139TEST(MemorySanitizer, strtoll) { 1140 char *e; 1141 assert(1 == strtoll("1", &e, 10)); 1142 EXPECT_NOT_POISONED((S8) e); 1143} 1144 1145TEST(MemorySanitizer, strtoul) { 1146 char *e; 1147 assert(1 == strtoul("1", &e, 10)); 1148 EXPECT_NOT_POISONED((S8) e); 1149} 1150 1151TEST(MemorySanitizer, strtoull) { 1152 char *e; 1153 assert(1 == strtoull("1", &e, 10)); 1154 EXPECT_NOT_POISONED((S8) e); 1155} 1156 1157TEST(MemorySanitizer, strtoimax) { 1158 char *e; 1159 assert(1 == strtoimax("1", &e, 10)); 1160 EXPECT_NOT_POISONED((S8) e); 1161} 1162 1163TEST(MemorySanitizer, strtoumax) { 1164 char *e; 1165 assert(1 == strtoumax("1", &e, 10)); 1166 EXPECT_NOT_POISONED((S8) e); 1167} 1168 1169TEST(MemorySanitizer, strtod) { 1170 char *e; 1171 assert(0 != strtod("1.5", &e)); 1172 EXPECT_NOT_POISONED((S8) e); 1173} 1174 1175TEST(MemorySanitizer, strtof) { 1176 char *e; 1177 assert(0 != strtof("1.5", &e)); 1178 EXPECT_NOT_POISONED((S8) e); 1179} 1180 1181TEST(MemorySanitizer, strtold) { 1182 char *e; 1183 assert(0 != strtold("1.5", &e)); 1184 EXPECT_NOT_POISONED((S8) e); 1185} 1186 1187TEST(MemorySanitizer, modf) { 1188 double x, y; 1189 x = modf(2.1, &y); 1190 EXPECT_NOT_POISONED(y); 1191} 1192 1193TEST(MemorySanitizer, modff) { 1194 float x, y; 1195 x = modff(2.1, &y); 1196 EXPECT_NOT_POISONED(y); 1197} 1198 1199TEST(MemorySanitizer, modfl) { 1200 long double x, y; 1201 x = modfl(2.1, &y); 1202 EXPECT_NOT_POISONED(y); 1203} 1204 1205TEST(MemorySanitizer, sprintf) { // NOLINT 1206 char buff[10]; 1207 break_optimization(buff); 1208 EXPECT_POISONED(buff[0]); 1209 int res = sprintf(buff, "%d", 1234567); // NOLINT 1210 assert(res == 7); 1211 assert(buff[0] == '1'); 1212 assert(buff[1] == '2'); 1213 assert(buff[2] == '3'); 1214 assert(buff[6] == '7'); 1215 assert(buff[7] == 0); 1216 EXPECT_POISONED(buff[8]); 1217} 1218 1219TEST(MemorySanitizer, snprintf) { 1220 char buff[10]; 1221 break_optimization(buff); 1222 EXPECT_POISONED(buff[0]); 1223 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1224 assert(res == 7); 1225 assert(buff[0] == '1'); 1226 assert(buff[1] == '2'); 1227 assert(buff[2] == '3'); 1228 assert(buff[6] == '7'); 1229 assert(buff[7] == 0); 1230 EXPECT_POISONED(buff[8]); 1231} 1232 1233TEST(MemorySanitizer, swprintf) { 1234 wchar_t buff[10]; 1235 assert(sizeof(wchar_t) == 4); 1236 break_optimization(buff); 1237 EXPECT_POISONED(buff[0]); 1238 int res = swprintf(buff, 9, L"%d", 1234567); 1239 assert(res == 7); 1240 assert(buff[0] == '1'); 1241 assert(buff[1] == '2'); 1242 assert(buff[2] == '3'); 1243 assert(buff[6] == '7'); 1244 assert(buff[7] == 0); 1245 EXPECT_POISONED(buff[8]); 1246} 1247 1248TEST(MemorySanitizer, asprintf) { // NOLINT 1249 char *pbuf; 1250 EXPECT_POISONED(pbuf); 1251 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1252 assert(res == 7); 1253 EXPECT_NOT_POISONED(pbuf); 1254 assert(pbuf[0] == '1'); 1255 assert(pbuf[1] == '2'); 1256 assert(pbuf[2] == '3'); 1257 assert(pbuf[6] == '7'); 1258 assert(pbuf[7] == 0); 1259 free(pbuf); 1260} 1261 1262TEST(MemorySanitizer, mbstowcs) { 1263 const char *x = "abc"; 1264 wchar_t buff[10]; 1265 int res = mbstowcs(buff, x, 2); 1266 EXPECT_EQ(2, res); 1267 EXPECT_EQ(L'a', buff[0]); 1268 EXPECT_EQ(L'b', buff[1]); 1269 EXPECT_POISONED(buff[2]); 1270 res = mbstowcs(buff, x, 10); 1271 EXPECT_EQ(3, res); 1272 EXPECT_NOT_POISONED(buff[3]); 1273} 1274 1275TEST(MemorySanitizer, wcstombs) { 1276 const wchar_t *x = L"abc"; 1277 char buff[10]; 1278 int res = wcstombs(buff, x, 4); 1279 EXPECT_EQ(res, 3); 1280 EXPECT_EQ(buff[0], 'a'); 1281 EXPECT_EQ(buff[1], 'b'); 1282 EXPECT_EQ(buff[2], 'c'); 1283} 1284 1285TEST(MemorySanitizer, wcsrtombs) { 1286 const wchar_t *x = L"abc"; 1287 const wchar_t *p = x; 1288 char buff[10]; 1289 mbstate_t mbs; 1290 memset(&mbs, 0, sizeof(mbs)); 1291 int res = wcsrtombs(buff, &p, 4, &mbs); 1292 EXPECT_EQ(res, 3); 1293 EXPECT_EQ(buff[0], 'a'); 1294 EXPECT_EQ(buff[1], 'b'); 1295 EXPECT_EQ(buff[2], 'c'); 1296 EXPECT_EQ(buff[3], '\0'); 1297 EXPECT_POISONED(buff[4]); 1298} 1299 1300TEST(MemorySanitizer, wcsnrtombs) { 1301 const wchar_t *x = L"abc"; 1302 const wchar_t *p = x; 1303 char buff[10]; 1304 mbstate_t mbs; 1305 memset(&mbs, 0, sizeof(mbs)); 1306 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1307 EXPECT_EQ(res, 2); 1308 EXPECT_EQ(buff[0], 'a'); 1309 EXPECT_EQ(buff[1], 'b'); 1310 EXPECT_POISONED(buff[2]); 1311} 1312 1313TEST(MemorySanitizer, mbtowc) { 1314 const char *x = "abc"; 1315 wchar_t wx; 1316 int res = mbtowc(&wx, x, 3); 1317 EXPECT_GT(res, 0); 1318 EXPECT_NOT_POISONED(wx); 1319} 1320 1321TEST(MemorySanitizer, mbrtowc) { 1322 const char *x = "abc"; 1323 wchar_t wx; 1324 mbstate_t mbs; 1325 memset(&mbs, 0, sizeof(mbs)); 1326 int res = mbrtowc(&wx, x, 3, &mbs); 1327 EXPECT_GT(res, 0); 1328 EXPECT_NOT_POISONED(wx); 1329} 1330 1331TEST(MemorySanitizer, gettimeofday) { 1332 struct timeval tv; 1333 struct timezone tz; 1334 break_optimization(&tv); 1335 break_optimization(&tz); 1336 assert(sizeof(tv) == 16); 1337 assert(sizeof(tz) == 8); 1338 EXPECT_POISONED(tv.tv_sec); 1339 EXPECT_POISONED(tv.tv_usec); 1340 EXPECT_POISONED(tz.tz_minuteswest); 1341 EXPECT_POISONED(tz.tz_dsttime); 1342 assert(0 == gettimeofday(&tv, &tz)); 1343 EXPECT_NOT_POISONED(tv.tv_sec); 1344 EXPECT_NOT_POISONED(tv.tv_usec); 1345 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1346 EXPECT_NOT_POISONED(tz.tz_dsttime); 1347} 1348 1349TEST(MemorySanitizer, clock_gettime) { 1350 struct timespec tp; 1351 EXPECT_POISONED(tp.tv_sec); 1352 EXPECT_POISONED(tp.tv_nsec); 1353 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1354 EXPECT_NOT_POISONED(tp.tv_sec); 1355 EXPECT_NOT_POISONED(tp.tv_nsec); 1356} 1357 1358TEST(MemorySanitizer, clock_getres) { 1359 struct timespec tp; 1360 EXPECT_POISONED(tp.tv_sec); 1361 EXPECT_POISONED(tp.tv_nsec); 1362 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1363 EXPECT_POISONED(tp.tv_sec); 1364 EXPECT_POISONED(tp.tv_nsec); 1365 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1366 EXPECT_NOT_POISONED(tp.tv_sec); 1367 EXPECT_NOT_POISONED(tp.tv_nsec); 1368} 1369 1370TEST(MemorySanitizer, getitimer) { 1371 struct itimerval it1, it2; 1372 int res; 1373 EXPECT_POISONED(it1.it_interval.tv_sec); 1374 EXPECT_POISONED(it1.it_interval.tv_usec); 1375 EXPECT_POISONED(it1.it_value.tv_sec); 1376 EXPECT_POISONED(it1.it_value.tv_usec); 1377 res = getitimer(ITIMER_VIRTUAL, &it1); 1378 assert(!res); 1379 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1380 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1381 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1382 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1383 1384 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1385 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1386 1387 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1388 assert(!res); 1389 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1390 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1391 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1392 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1393 1394 // Check that old_value can be 0, and disable the timer. 1395 memset(&it1, 0, sizeof(it1)); 1396 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1397 assert(!res); 1398} 1399 1400TEST(MemorySanitizer, time) { 1401 time_t t; 1402 EXPECT_POISONED(t); 1403 time_t t2 = time(&t); 1404 assert(t2 != (time_t)-1); 1405 EXPECT_NOT_POISONED(t); 1406} 1407 1408TEST(MemorySanitizer, localtime) { 1409 time_t t = 123; 1410 struct tm *time = localtime(&t); 1411 assert(time != 0); 1412 EXPECT_NOT_POISONED(time->tm_sec); 1413 EXPECT_NOT_POISONED(time->tm_hour); 1414 EXPECT_NOT_POISONED(time->tm_year); 1415 EXPECT_NOT_POISONED(time->tm_isdst); 1416} 1417 1418TEST(MemorySanitizer, localtime_r) { 1419 time_t t = 123; 1420 struct tm time; 1421 struct tm *res = localtime_r(&t, &time); 1422 assert(res != 0); 1423 EXPECT_NOT_POISONED(time.tm_sec); 1424 EXPECT_NOT_POISONED(time.tm_hour); 1425 EXPECT_NOT_POISONED(time.tm_year); 1426 EXPECT_NOT_POISONED(time.tm_isdst); 1427} 1428 1429TEST(MemorySanitizer, mmap) { 1430 const int size = 4096; 1431 void *p1, *p2; 1432 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1433 __msan_poison(p1, size); 1434 munmap(p1, size); 1435 for (int i = 0; i < 1000; i++) { 1436 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1437 if (p2 == p1) 1438 break; 1439 else 1440 munmap(p2, size); 1441 } 1442 if (p1 == p2) { 1443 EXPECT_NOT_POISONED(*(char*)p2); 1444 munmap(p2, size); 1445 } 1446} 1447 1448// FIXME: enable and add ecvt. 1449// FIXME: check why msandr does nt handle fcvt. 1450TEST(MemorySanitizer, fcvt) { 1451 int a, b; 1452 break_optimization(&a); 1453 break_optimization(&b); 1454 EXPECT_POISONED(a); 1455 EXPECT_POISONED(b); 1456 char *str = fcvt(12345.6789, 10, &a, &b); 1457 EXPECT_NOT_POISONED(a); 1458 EXPECT_NOT_POISONED(b); 1459} 1460 1461TEST(MemorySanitizer, frexp) { 1462 int x; 1463 x = *GetPoisoned<int>(); 1464 double r = frexp(1.1, &x); 1465 EXPECT_NOT_POISONED(r); 1466 EXPECT_NOT_POISONED(x); 1467 1468 x = *GetPoisoned<int>(); 1469 float rf = frexpf(1.1, &x); 1470 EXPECT_NOT_POISONED(rf); 1471 EXPECT_NOT_POISONED(x); 1472 1473 x = *GetPoisoned<int>(); 1474 double rl = frexpl(1.1, &x); 1475 EXPECT_NOT_POISONED(rl); 1476 EXPECT_NOT_POISONED(x); 1477} 1478 1479namespace { 1480 1481static int cnt; 1482 1483void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1484 assert(signo == SIGPROF); 1485 assert(si); 1486 EXPECT_NOT_POISONED(si->si_errno); 1487 EXPECT_NOT_POISONED(si->si_pid); 1488#if __linux__ 1489# if defined(__x86_64__) 1490 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1491# elif defined(__i386__) 1492 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1493# endif 1494#endif 1495 ++cnt; 1496} 1497 1498TEST(MemorySanitizer, sigaction) { 1499 struct sigaction act = {}; 1500 struct sigaction oldact = {}; 1501 struct sigaction origact = {}; 1502 1503 sigaction(SIGPROF, 0, &origact); 1504 1505 act.sa_flags |= SA_SIGINFO; 1506 act.sa_sigaction = &SigactionHandler; 1507 sigaction(SIGPROF, &act, 0); 1508 1509 kill(getpid(), SIGPROF); 1510 1511 act.sa_flags &= ~SA_SIGINFO; 1512 act.sa_handler = SIG_DFL; 1513 sigaction(SIGPROF, &act, 0); 1514 1515 act.sa_flags &= ~SA_SIGINFO; 1516 act.sa_handler = SIG_IGN; 1517 sigaction(SIGPROF, &act, &oldact); 1518 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1519 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1520 kill(getpid(), SIGPROF); 1521 1522 act.sa_flags |= SA_SIGINFO; 1523 act.sa_sigaction = &SigactionHandler; 1524 sigaction(SIGPROF, &act, &oldact); 1525 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1526 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1527 kill(getpid(), SIGPROF); 1528 1529 act.sa_flags &= ~SA_SIGINFO; 1530 act.sa_handler = SIG_DFL; 1531 sigaction(SIGPROF, &act, &oldact); 1532 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1533 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1534 EXPECT_EQ(2, cnt); 1535 1536 sigaction(SIGPROF, &origact, 0); 1537} 1538 1539} // namespace 1540 1541struct StructWithDtor { 1542 ~StructWithDtor(); 1543}; 1544 1545NOINLINE StructWithDtor::~StructWithDtor() { 1546 break_optimization(0); 1547} 1548 1549TEST(MemorySanitizer, Invoke) { 1550 StructWithDtor s; // Will cause the calls to become invokes. 1551 EXPECT_NOT_POISONED(0); 1552 EXPECT_POISONED(*GetPoisoned<int>()); 1553 EXPECT_NOT_POISONED(0); 1554 EXPECT_POISONED(*GetPoisoned<int>()); 1555 EXPECT_POISONED(ReturnPoisoned<S4>()); 1556} 1557 1558TEST(MemorySanitizer, ptrtoint) { 1559 // Test that shadow is propagated through pointer-to-integer conversion. 1560 void* p = (void*)0xABCD; 1561 __msan_poison(((char*)&p) + 1, sizeof(p)); 1562 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1563 1564 void* q = (void*)0xABCD; 1565 __msan_poison(&q, sizeof(q) - 1); 1566 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1567} 1568 1569static void vaargsfn2(int guard, ...) { 1570 va_list vl; 1571 va_start(vl, guard); 1572 EXPECT_NOT_POISONED(va_arg(vl, int)); 1573 EXPECT_NOT_POISONED(va_arg(vl, int)); 1574 EXPECT_NOT_POISONED(va_arg(vl, int)); 1575 EXPECT_POISONED(va_arg(vl, double)); 1576 va_end(vl); 1577} 1578 1579static void vaargsfn(int guard, ...) { 1580 va_list vl; 1581 va_start(vl, guard); 1582 EXPECT_NOT_POISONED(va_arg(vl, int)); 1583 EXPECT_POISONED(va_arg(vl, int)); 1584 // The following call will overwrite __msan_param_tls. 1585 // Checks after it test that arg shadow was somehow saved across the call. 1586 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1587 EXPECT_NOT_POISONED(va_arg(vl, int)); 1588 EXPECT_POISONED(va_arg(vl, int)); 1589 va_end(vl); 1590} 1591 1592TEST(MemorySanitizer, VAArgTest) { 1593 int* x = GetPoisoned<int>(); 1594 int* y = GetPoisoned<int>(4); 1595 vaargsfn(1, 13, *x, 42, *y); 1596} 1597 1598static void vaargsfn_many(int guard, ...) { 1599 va_list vl; 1600 va_start(vl, guard); 1601 EXPECT_NOT_POISONED(va_arg(vl, int)); 1602 EXPECT_POISONED(va_arg(vl, int)); 1603 EXPECT_NOT_POISONED(va_arg(vl, int)); 1604 EXPECT_NOT_POISONED(va_arg(vl, int)); 1605 EXPECT_NOT_POISONED(va_arg(vl, int)); 1606 EXPECT_NOT_POISONED(va_arg(vl, int)); 1607 EXPECT_NOT_POISONED(va_arg(vl, int)); 1608 EXPECT_NOT_POISONED(va_arg(vl, int)); 1609 EXPECT_NOT_POISONED(va_arg(vl, int)); 1610 EXPECT_POISONED(va_arg(vl, int)); 1611 va_end(vl); 1612} 1613 1614TEST(MemorySanitizer, VAArgManyTest) { 1615 int* x = GetPoisoned<int>(); 1616 int* y = GetPoisoned<int>(4); 1617 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1618} 1619 1620static void vaargsfn_pass2(va_list vl) { 1621 EXPECT_NOT_POISONED(va_arg(vl, int)); 1622 EXPECT_NOT_POISONED(va_arg(vl, int)); 1623 EXPECT_POISONED(va_arg(vl, int)); 1624} 1625 1626static void vaargsfn_pass(int guard, ...) { 1627 va_list vl; 1628 va_start(vl, guard); 1629 EXPECT_POISONED(va_arg(vl, int)); 1630 vaargsfn_pass2(vl); 1631 va_end(vl); 1632} 1633 1634TEST(MemorySanitizer, VAArgPass) { 1635 int* x = GetPoisoned<int>(); 1636 int* y = GetPoisoned<int>(4); 1637 vaargsfn_pass(1, *x, 2, 3, *y); 1638} 1639 1640static void vaargsfn_copy2(va_list vl) { 1641 EXPECT_NOT_POISONED(va_arg(vl, int)); 1642 EXPECT_POISONED(va_arg(vl, int)); 1643} 1644 1645static void vaargsfn_copy(int guard, ...) { 1646 va_list vl; 1647 va_start(vl, guard); 1648 EXPECT_NOT_POISONED(va_arg(vl, int)); 1649 EXPECT_POISONED(va_arg(vl, int)); 1650 va_list vl2; 1651 va_copy(vl2, vl); 1652 vaargsfn_copy2(vl2); 1653 EXPECT_NOT_POISONED(va_arg(vl, int)); 1654 EXPECT_POISONED(va_arg(vl, int)); 1655 va_end(vl); 1656} 1657 1658TEST(MemorySanitizer, VAArgCopy) { 1659 int* x = GetPoisoned<int>(); 1660 int* y = GetPoisoned<int>(4); 1661 vaargsfn_copy(1, 2, *x, 3, *y); 1662} 1663 1664static void vaargsfn_ptr(int guard, ...) { 1665 va_list vl; 1666 va_start(vl, guard); 1667 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1668 EXPECT_POISONED(va_arg(vl, int*)); 1669 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1670 EXPECT_POISONED(va_arg(vl, double*)); 1671 va_end(vl); 1672} 1673 1674TEST(MemorySanitizer, VAArgPtr) { 1675 int** x = GetPoisoned<int*>(); 1676 double** y = GetPoisoned<double*>(8); 1677 int z; 1678 vaargsfn_ptr(1, &z, *x, &z, *y); 1679} 1680 1681static void vaargsfn_overflow(int guard, ...) { 1682 va_list vl; 1683 va_start(vl, guard); 1684 EXPECT_NOT_POISONED(va_arg(vl, int)); 1685 EXPECT_NOT_POISONED(va_arg(vl, int)); 1686 EXPECT_POISONED(va_arg(vl, int)); 1687 EXPECT_NOT_POISONED(va_arg(vl, int)); 1688 EXPECT_NOT_POISONED(va_arg(vl, int)); 1689 EXPECT_NOT_POISONED(va_arg(vl, int)); 1690 1691 EXPECT_NOT_POISONED(va_arg(vl, double)); 1692 EXPECT_NOT_POISONED(va_arg(vl, double)); 1693 EXPECT_NOT_POISONED(va_arg(vl, double)); 1694 EXPECT_POISONED(va_arg(vl, double)); 1695 EXPECT_NOT_POISONED(va_arg(vl, double)); 1696 EXPECT_POISONED(va_arg(vl, int*)); 1697 EXPECT_NOT_POISONED(va_arg(vl, double)); 1698 EXPECT_NOT_POISONED(va_arg(vl, double)); 1699 1700 EXPECT_POISONED(va_arg(vl, int)); 1701 EXPECT_POISONED(va_arg(vl, double)); 1702 EXPECT_POISONED(va_arg(vl, int*)); 1703 1704 EXPECT_NOT_POISONED(va_arg(vl, int)); 1705 EXPECT_NOT_POISONED(va_arg(vl, double)); 1706 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1707 1708 EXPECT_POISONED(va_arg(vl, int)); 1709 EXPECT_POISONED(va_arg(vl, double)); 1710 EXPECT_POISONED(va_arg(vl, int*)); 1711 1712 va_end(vl); 1713} 1714 1715TEST(MemorySanitizer, VAArgOverflow) { 1716 int* x = GetPoisoned<int>(); 1717 double* y = GetPoisoned<double>(8); 1718 int** p = GetPoisoned<int*>(16); 1719 int z; 1720 vaargsfn_overflow(1, 1721 1, 2, *x, 4, 5, 6, 1722 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1723 // the following args will overflow for sure 1724 *x, *y, *p, 1725 7, 9.9, &z, 1726 *x, *y, *p); 1727} 1728 1729static void vaargsfn_tlsoverwrite2(int guard, ...) { 1730 va_list vl; 1731 va_start(vl, guard); 1732 EXPECT_NOT_POISONED(va_arg(vl, int)); 1733 va_end(vl); 1734} 1735 1736static void vaargsfn_tlsoverwrite(int guard, ...) { 1737 // This call will overwrite TLS contents unless it's backed up somewhere. 1738 vaargsfn_tlsoverwrite2(2, 42); 1739 va_list vl; 1740 va_start(vl, guard); 1741 EXPECT_POISONED(va_arg(vl, int)); 1742 va_end(vl); 1743} 1744 1745TEST(MemorySanitizer, VAArgTLSOverwrite) { 1746 int* x = GetPoisoned<int>(); 1747 vaargsfn_tlsoverwrite(1, *x); 1748} 1749 1750struct StructByVal { 1751 int a, b, c, d, e, f; 1752}; 1753 1754NOINLINE void StructByValTestFunc(struct StructByVal s) { 1755 EXPECT_NOT_POISONED(s.a); 1756 EXPECT_POISONED(s.b); 1757 EXPECT_NOT_POISONED(s.c); 1758 EXPECT_POISONED(s.d); 1759 EXPECT_NOT_POISONED(s.e); 1760 EXPECT_POISONED(s.f); 1761} 1762 1763NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1764 StructByValTestFunc(s); 1765} 1766 1767NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1768 StructByValTestFunc(s); 1769} 1770 1771TEST(MemorySanitizer, StructByVal) { 1772 // Large aggregates are passed as "byval" pointer argument in LLVM. 1773 struct StructByVal s; 1774 s.a = 1; 1775 s.b = *GetPoisoned<int>(); 1776 s.c = 2; 1777 s.d = *GetPoisoned<int>(); 1778 s.e = 3; 1779 s.f = *GetPoisoned<int>(); 1780 StructByValTestFunc(s); 1781 StructByValTestFunc1(s); 1782 StructByValTestFunc2(0, s); 1783} 1784 1785 1786#if MSAN_HAS_M128 1787NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1788NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1789TEST(MemorySanitizer, m128) { 1790 __m128i a = _mm_set1_epi16(0x1234); 1791 __m128i b = _mm_set1_epi16(0x7890); 1792 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1793 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1794} 1795// FIXME: add more tests for __m128i. 1796#endif // MSAN_HAS_M128 1797 1798// We should not complain when copying this poisoned hole. 1799struct StructWithHole { 1800 U4 a; 1801 // 4-byte hole. 1802 U8 b; 1803}; 1804 1805NOINLINE StructWithHole ReturnStructWithHole() { 1806 StructWithHole res; 1807 __msan_poison(&res, sizeof(res)); 1808 res.a = 1; 1809 res.b = 2; 1810 return res; 1811} 1812 1813TEST(MemorySanitizer, StructWithHole) { 1814 StructWithHole a = ReturnStructWithHole(); 1815 break_optimization(&a); 1816} 1817 1818template <class T> 1819NOINLINE T ReturnStruct() { 1820 T res; 1821 __msan_poison(&res, sizeof(res)); 1822 res.a = 1; 1823 return res; 1824} 1825 1826template <class T> 1827NOINLINE void TestReturnStruct() { 1828 T s1 = ReturnStruct<T>(); 1829 EXPECT_NOT_POISONED(s1.a); 1830 EXPECT_POISONED(s1.b); 1831} 1832 1833struct SSS1 { 1834 int a, b, c; 1835}; 1836struct SSS2 { 1837 int b, a, c; 1838}; 1839struct SSS3 { 1840 int b, c, a; 1841}; 1842struct SSS4 { 1843 int c, b, a; 1844}; 1845 1846struct SSS5 { 1847 int a; 1848 float b; 1849}; 1850struct SSS6 { 1851 int a; 1852 double b; 1853}; 1854struct SSS7 { 1855 S8 b; 1856 int a; 1857}; 1858struct SSS8 { 1859 S2 b; 1860 S8 a; 1861}; 1862 1863TEST(MemorySanitizer, IntStruct3) { 1864 TestReturnStruct<SSS1>(); 1865 TestReturnStruct<SSS2>(); 1866 TestReturnStruct<SSS3>(); 1867 TestReturnStruct<SSS4>(); 1868 TestReturnStruct<SSS5>(); 1869 TestReturnStruct<SSS6>(); 1870 TestReturnStruct<SSS7>(); 1871 TestReturnStruct<SSS8>(); 1872} 1873 1874struct LongStruct { 1875 U1 a1, b1; 1876 U2 a2, b2; 1877 U4 a4, b4; 1878 U8 a8, b8; 1879}; 1880 1881NOINLINE LongStruct ReturnLongStruct1() { 1882 LongStruct res; 1883 __msan_poison(&res, sizeof(res)); 1884 res.a1 = res.a2 = res.a4 = res.a8 = 111; 1885 // leaves b1, .., b8 poisoned. 1886 return res; 1887} 1888 1889NOINLINE LongStruct ReturnLongStruct2() { 1890 LongStruct res; 1891 __msan_poison(&res, sizeof(res)); 1892 res.b1 = res.b2 = res.b4 = res.b8 = 111; 1893 // leaves a1, .., a8 poisoned. 1894 return res; 1895} 1896 1897TEST(MemorySanitizer, LongStruct) { 1898 LongStruct s1 = ReturnLongStruct1(); 1899 __msan_print_shadow(&s1, sizeof(s1)); 1900 EXPECT_NOT_POISONED(s1.a1); 1901 EXPECT_NOT_POISONED(s1.a2); 1902 EXPECT_NOT_POISONED(s1.a4); 1903 EXPECT_NOT_POISONED(s1.a8); 1904 1905 EXPECT_POISONED(s1.b1); 1906 EXPECT_POISONED(s1.b2); 1907 EXPECT_POISONED(s1.b4); 1908 EXPECT_POISONED(s1.b8); 1909 1910 LongStruct s2 = ReturnLongStruct2(); 1911 __msan_print_shadow(&s2, sizeof(s2)); 1912 EXPECT_NOT_POISONED(s2.b1); 1913 EXPECT_NOT_POISONED(s2.b2); 1914 EXPECT_NOT_POISONED(s2.b4); 1915 EXPECT_NOT_POISONED(s2.b8); 1916 1917 EXPECT_POISONED(s2.a1); 1918 EXPECT_POISONED(s2.a2); 1919 EXPECT_POISONED(s2.a4); 1920 EXPECT_POISONED(s2.a8); 1921} 1922 1923TEST(MemorySanitizer, getrlimit) { 1924 struct rlimit limit; 1925 __msan_poison(&limit, sizeof(limit)); 1926 int result = getrlimit(RLIMIT_DATA, &limit); 1927 assert(result == 0); 1928 EXPECT_NOT_POISONED(limit.rlim_cur); 1929 EXPECT_NOT_POISONED(limit.rlim_max); 1930} 1931 1932TEST(MemorySanitizer, getrusage) { 1933 struct rusage usage; 1934 __msan_poison(&usage, sizeof(usage)); 1935 int result = getrusage(RUSAGE_SELF, &usage); 1936 assert(result == 0); 1937 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 1938 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 1939 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 1940 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 1941 EXPECT_NOT_POISONED(usage.ru_maxrss); 1942 EXPECT_NOT_POISONED(usage.ru_minflt); 1943 EXPECT_NOT_POISONED(usage.ru_majflt); 1944 EXPECT_NOT_POISONED(usage.ru_inblock); 1945 EXPECT_NOT_POISONED(usage.ru_oublock); 1946 EXPECT_NOT_POISONED(usage.ru_nvcsw); 1947 EXPECT_NOT_POISONED(usage.ru_nivcsw); 1948} 1949 1950#ifdef __GLIBC__ 1951extern char *program_invocation_name; 1952#else // __GLIBC__ 1953# error "TODO: port this" 1954#endif 1955 1956static void dladdr_testfn() {} 1957 1958TEST(MemorySanitizer, dladdr) { 1959 Dl_info info; 1960 __msan_poison(&info, sizeof(info)); 1961 int result = dladdr((const void*)dladdr_testfn, &info); 1962 assert(result != 0); 1963 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 1964 if (info.dli_fname) 1965 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 1966 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 1967 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 1968 if (info.dli_sname) 1969 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 1970 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 1971} 1972 1973#ifndef MSAN_TEST_DISABLE_DLOPEN 1974 1975static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 1976 (*(int *)data)++; 1977 EXPECT_NOT_POISONED(info->dlpi_addr); 1978 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 1979 EXPECT_NOT_POISONED(info->dlpi_phnum); 1980 for (int i = 0; i < info->dlpi_phnum; ++i) 1981 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 1982 return 0; 1983} 1984 1985// Compute the path to our loadable DSO. We assume it's in the same 1986// directory. Only use string routines that we intercept so far to do this. 1987static int PathToLoadable(char *buf, size_t sz) { 1988 const char *basename = "libmsan_loadable.x86_64.so"; 1989 char *argv0 = program_invocation_name; 1990 char *last_slash = strrchr(argv0, '/'); 1991 assert(last_slash); 1992 int res = 1993 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 1994 return res < sz ? 0 : res; 1995} 1996 1997TEST(MemorySanitizer, dl_iterate_phdr) { 1998 char path[4096]; 1999 int res = PathToLoadable(path, sizeof(path)); 2000 assert(!res); 2001 2002 // Having at least one dlopen'ed library in the process makes this more 2003 // entertaining. 2004 void *lib = dlopen(path, RTLD_LAZY); 2005 ASSERT_NE((void*)0, lib); 2006 2007 int count = 0; 2008 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2009 assert(count > 0); 2010 2011 dlclose(lib); 2012} 2013 2014 2015TEST(MemorySanitizer, dlopen) { 2016 char path[4096]; 2017 int res = PathToLoadable(path, sizeof(path)); 2018 assert(!res); 2019 2020 // We need to clear shadow for globals when doing dlopen. In order to test 2021 // this, we have to poison the shadow for the DSO before we load it. In 2022 // general this is difficult, but the loader tends to reload things in the 2023 // same place, so we open, close, and then reopen. The global should always 2024 // start out clean after dlopen. 2025 for (int i = 0; i < 2; i++) { 2026 void *lib = dlopen(path, RTLD_LAZY); 2027 if (lib == NULL) { 2028 printf("dlerror: %s\n", dlerror()); 2029 assert(lib != NULL); 2030 } 2031 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2032 assert(get_dso_global); 2033 void **dso_global = get_dso_global(); 2034 EXPECT_NOT_POISONED(*dso_global); 2035 __msan_poison(dso_global, sizeof(*dso_global)); 2036 EXPECT_POISONED(*dso_global); 2037 dlclose(lib); 2038 } 2039} 2040 2041// Regression test for a crash in dlopen() interceptor. 2042TEST(MemorySanitizer, dlopenFailed) { 2043 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2044 void *lib = dlopen(path, RTLD_LAZY); 2045 ASSERT_EQ(0, lib); 2046} 2047 2048#endif // MSAN_TEST_DISABLE_DLOPEN 2049 2050TEST(MemorySanitizer, scanf) { 2051 const char *input = "42 hello"; 2052 int* d = new int; 2053 char* s = new char[7]; 2054 int res = sscanf(input, "%d %5s", d, s); 2055 printf("res %d\n", res); 2056 assert(res == 2); 2057 EXPECT_NOT_POISONED(*d); 2058 EXPECT_NOT_POISONED(s[0]); 2059 EXPECT_NOT_POISONED(s[1]); 2060 EXPECT_NOT_POISONED(s[2]); 2061 EXPECT_NOT_POISONED(s[3]); 2062 EXPECT_NOT_POISONED(s[4]); 2063 EXPECT_NOT_POISONED(s[5]); 2064 EXPECT_POISONED(s[6]); 2065 delete s; 2066 delete d; 2067} 2068 2069static void *SimpleThread_threadfn(void* data) { 2070 return new int; 2071} 2072 2073TEST(MemorySanitizer, SimpleThread) { 2074 pthread_t t; 2075 void *p; 2076 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2077 assert(!res); 2078 EXPECT_NOT_POISONED(t); 2079 res = pthread_join(t, &p); 2080 assert(!res); 2081 EXPECT_NOT_POISONED(p); 2082 delete (int*)p; 2083} 2084 2085static void *SmallStackThread_threadfn(void* data) { 2086 return 0; 2087} 2088 2089TEST(MemorySanitizer, SmallStackThread) { 2090 pthread_attr_t attr; 2091 pthread_t t; 2092 void *p; 2093 int res; 2094 res = pthread_attr_init(&attr); 2095 ASSERT_EQ(0, res); 2096 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2097 ASSERT_EQ(0, res); 2098 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2099 ASSERT_EQ(0, res); 2100 res = pthread_join(t, &p); 2101 ASSERT_EQ(0, res); 2102 res = pthread_attr_destroy(&attr); 2103 ASSERT_EQ(0, res); 2104} 2105 2106TEST(MemorySanitizer, PreAllocatedStackThread) { 2107 pthread_attr_t attr; 2108 pthread_t t; 2109 int res; 2110 res = pthread_attr_init(&attr); 2111 ASSERT_EQ(0, res); 2112 void *stack; 2113 const size_t kStackSize = 64 * 1024; 2114 res = posix_memalign(&stack, 4096, kStackSize); 2115 ASSERT_EQ(0, res); 2116 res = pthread_attr_setstack(&attr, stack, kStackSize); 2117 ASSERT_EQ(0, res); 2118 // A small self-allocated stack can not be extended by the tool. 2119 // In this case pthread_create is expected to fail. 2120 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2121 EXPECT_NE(0, res); 2122 res = pthread_attr_destroy(&attr); 2123 ASSERT_EQ(0, res); 2124} 2125 2126TEST(MemorySanitizer, pthread_getschedparam) { 2127 int policy; 2128 struct sched_param param; 2129 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2130 ASSERT_EQ(0, res); 2131 EXPECT_NOT_POISONED(policy); 2132 EXPECT_NOT_POISONED(param.sched_priority); 2133} 2134 2135TEST(MemorySanitizer, pthread_key_create) { 2136 pthread_key_t key; 2137 int res = pthread_key_create(&key, NULL); 2138 assert(!res); 2139 EXPECT_NOT_POISONED(key); 2140 res = pthread_key_delete(key); 2141 assert(!res); 2142} 2143 2144TEST(MemorySanitizer, posix_memalign) { 2145 void *p; 2146 EXPECT_POISONED(p); 2147 int res = posix_memalign(&p, 4096, 13); 2148 ASSERT_EQ(0, res); 2149 EXPECT_NOT_POISONED(p); 2150 free(p); 2151} 2152 2153TEST(MemorySanitizer, inet_pton) { 2154 const char *s = "1:0:0:0:0:0:0:8"; 2155 unsigned char buf[sizeof(struct in6_addr)]; 2156 int res = inet_pton(AF_INET6, s, buf); 2157 ASSERT_EQ(1, res); 2158 EXPECT_NOT_POISONED(buf[0]); 2159 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2160 2161 char s_out[INET6_ADDRSTRLEN]; 2162 EXPECT_POISONED(s_out[3]); 2163 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2164 ASSERT_NE((void*)0, q); 2165 EXPECT_NOT_POISONED(s_out[3]); 2166} 2167 2168TEST(MemorySanitizer, inet_aton) { 2169 const char *s = "127.0.0.1"; 2170 struct in_addr in[2]; 2171 int res = inet_aton(s, in); 2172 ASSERT_NE(0, res); 2173 EXPECT_NOT_POISONED(in[0]); 2174 EXPECT_POISONED(*(char *)(in + 1)); 2175} 2176 2177TEST(MemorySanitizer, uname) { 2178 struct utsname u; 2179 int res = uname(&u); 2180 assert(!res); 2181 EXPECT_NOT_POISONED(strlen(u.sysname)); 2182 EXPECT_NOT_POISONED(strlen(u.nodename)); 2183 EXPECT_NOT_POISONED(strlen(u.release)); 2184 EXPECT_NOT_POISONED(strlen(u.version)); 2185 EXPECT_NOT_POISONED(strlen(u.machine)); 2186} 2187 2188TEST(MemorySanitizer, gethostname) { 2189 char buf[100]; 2190 int res = gethostname(buf, 100); 2191 assert(!res); 2192 EXPECT_NOT_POISONED(strlen(buf)); 2193} 2194 2195TEST(MemorySanitizer, sysinfo) { 2196 struct sysinfo info; 2197 int res = sysinfo(&info); 2198 assert(!res); 2199 EXPECT_NOT_POISONED(info); 2200} 2201 2202TEST(MemorySanitizer, getpwuid) { 2203 struct passwd *p = getpwuid(0); // root 2204 assert(p); 2205 EXPECT_NOT_POISONED(p->pw_name); 2206 assert(p->pw_name); 2207 EXPECT_NOT_POISONED(p->pw_name[0]); 2208 EXPECT_NOT_POISONED(p->pw_uid); 2209 assert(p->pw_uid == 0); 2210} 2211 2212TEST(MemorySanitizer, getpwnam_r) { 2213 struct passwd pwd; 2214 struct passwd *pwdres; 2215 char buf[10000]; 2216 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2217 assert(!res); 2218 EXPECT_NOT_POISONED(pwd.pw_name); 2219 assert(pwd.pw_name); 2220 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2221 EXPECT_NOT_POISONED(pwd.pw_uid); 2222 assert(pwd.pw_uid == 0); 2223} 2224 2225TEST(MemorySanitizer, getpwnam_r_positive) { 2226 struct passwd pwd; 2227 struct passwd *pwdres; 2228 char s[5]; 2229 strncpy(s, "abcd", 5); 2230 __msan_poison(s, 5); 2231 char buf[10000]; 2232 int res; 2233 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2234} 2235 2236TEST(MemorySanitizer, getgrnam_r) { 2237 struct group grp; 2238 struct group *grpres; 2239 char buf[10000]; 2240 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2241 assert(!res); 2242 EXPECT_NOT_POISONED(grp.gr_name); 2243 assert(grp.gr_name); 2244 EXPECT_NOT_POISONED(grp.gr_name[0]); 2245 EXPECT_NOT_POISONED(grp.gr_gid); 2246} 2247 2248template<class T> 2249static bool applySlt(T value, T shadow) { 2250 __msan_partial_poison(&value, &shadow, sizeof(T)); 2251 volatile bool zzz = true; 2252 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2253 // a shift-and-trunc to get at the highest bit. 2254 volatile bool v = value < 0 || zzz; 2255 return v; 2256} 2257 2258TEST(MemorySanitizer, SignedCompareWithZero) { 2259 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2260 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2261 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2262 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2263 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2264 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2265} 2266 2267template <class T, class S> 2268static T poisoned(T Va, S Sa) { 2269 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2270 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2271 T a; 2272 a = Va; 2273 __msan_partial_poison(&a, &Sa, sizeof(T)); 2274 return a; 2275} 2276 2277TEST(MemorySanitizer, ICmpRelational) { 2278 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2279 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2280 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2281 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2282 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2283 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2284 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2285 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2286 poisoned(-1, 0xFFFFFFFFU)); 2287 2288 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2289 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2290 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2291 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2292 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2293 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2294 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2295 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2296 poisoned(-1, 0xFFFFFFFFU)); 2297 2298 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2299 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2300 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2301 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2302 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2303 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2304 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2305 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2306 poisoned(-1, 0xFFFFFFFFU)); 2307 2308 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2309 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2310 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2311 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2312 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2313 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2314 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2315 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2316 poisoned(-1, 0xFFFFFFFFU)); 2317 2318 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2319 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2320 2321 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2322} 2323 2324#if MSAN_HAS_M128 2325TEST(MemorySanitizer, ICmpVectorRelational) { 2326 EXPECT_NOT_POISONED( 2327 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2328 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2329 EXPECT_NOT_POISONED( 2330 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2331 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2332 EXPECT_POISONED( 2333 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2334 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2335 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2336 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2337} 2338#endif 2339 2340// Volatile bitfield store is implemented as load-mask-store 2341// Test that we don't warn on the store of (uninitialized) padding. 2342struct VolatileBitfieldStruct { 2343 volatile unsigned x : 1; 2344 unsigned y : 1; 2345}; 2346 2347TEST(MemorySanitizer, VolatileBitfield) { 2348 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2349 S->x = 1; 2350 EXPECT_NOT_POISONED((unsigned)S->x); 2351 EXPECT_POISONED((unsigned)S->y); 2352} 2353 2354TEST(MemorySanitizer, UnalignedLoad) { 2355 char x[32]; 2356 memset(x + 8, 0, 16); 2357 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2358 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2359 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2360 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2361 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2362 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2363 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2364 2365 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2366 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2367 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2368 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2369 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2370 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2371 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2372 2373 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2374 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2375 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2376 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2377 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2378 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2379 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2380 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2381 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2382} 2383 2384TEST(MemorySanitizer, UnalignedStore16) { 2385 char x[5]; 2386 U2 y = 0; 2387 __msan_poison(&y, 1); 2388 __sanitizer_unaligned_store16(x + 1, y); 2389 EXPECT_POISONED(x[0]); 2390 EXPECT_POISONED(x[1]); 2391 EXPECT_NOT_POISONED(x[2]); 2392 EXPECT_POISONED(x[3]); 2393 EXPECT_POISONED(x[4]); 2394} 2395 2396TEST(MemorySanitizer, UnalignedStore32) { 2397 char x[8]; 2398 U4 y4 = 0; 2399 __msan_poison(&y4, 2); 2400 __sanitizer_unaligned_store32(x+3, y4); 2401 EXPECT_POISONED(x[0]); 2402 EXPECT_POISONED(x[1]); 2403 EXPECT_POISONED(x[2]); 2404 EXPECT_POISONED(x[3]); 2405 EXPECT_POISONED(x[4]); 2406 EXPECT_NOT_POISONED(x[5]); 2407 EXPECT_NOT_POISONED(x[6]); 2408 EXPECT_POISONED(x[7]); 2409} 2410 2411TEST(MemorySanitizer, UnalignedStore64) { 2412 char x[16]; 2413 U8 y = 0; 2414 __msan_poison(&y, 3); 2415 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2416 __sanitizer_unaligned_store64(x+3, y); 2417 EXPECT_POISONED(x[0]); 2418 EXPECT_POISONED(x[1]); 2419 EXPECT_POISONED(x[2]); 2420 EXPECT_POISONED(x[3]); 2421 EXPECT_POISONED(x[4]); 2422 EXPECT_POISONED(x[5]); 2423 EXPECT_NOT_POISONED(x[6]); 2424 EXPECT_NOT_POISONED(x[7]); 2425 EXPECT_NOT_POISONED(x[8]); 2426 EXPECT_POISONED(x[9]); 2427 EXPECT_NOT_POISONED(x[10]); 2428 EXPECT_POISONED(x[11]); 2429} 2430 2431TEST(MemorySanitizerDr, StoreInDSOTest) { 2432 if (!__msan_has_dynamic_component()) return; 2433 char* s = new char[10]; 2434 dso_memfill(s, 9); 2435 EXPECT_NOT_POISONED(s[5]); 2436 EXPECT_POISONED(s[9]); 2437} 2438 2439int return_poisoned_int() { 2440 return ReturnPoisoned<U8>(); 2441} 2442 2443TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2444 if (!__msan_has_dynamic_component()) return; 2445 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2446} 2447 2448NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2449 EXPECT_POISONED(x); 2450 EXPECT_POISONED(y); 2451 EXPECT_POISONED(z); 2452 return 0; 2453} 2454 2455static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2456 EXPECT_NOT_POISONED(x); 2457 EXPECT_NOT_POISONED(y); 2458 EXPECT_NOT_POISONED(z); 2459 return 0; 2460} 2461 2462TEST(MemorySanitizerDr, CallFromDSOTest) { 2463 if (!__msan_has_dynamic_component()) return; 2464 S8* x = GetPoisoned<S8>(); 2465 S8* y = GetPoisoned<S8>(); 2466 S8* z = GetPoisoned<S8>(); 2467 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2468 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2469} 2470 2471static void StackStoreInDSOFn(int* x, int* y) { 2472 EXPECT_NOT_POISONED(*x); 2473 EXPECT_NOT_POISONED(*y); 2474} 2475 2476TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2477 if (!__msan_has_dynamic_component()) return; 2478 dso_stack_store(StackStoreInDSOFn, 1); 2479} 2480 2481TEST(MemorySanitizerOrigins, SetGet) { 2482 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2483 if (!TrackingOrigins()) return; 2484 int x; 2485 __msan_set_origin(&x, sizeof(x), 1234); 2486 EXPECT_EQ(1234, __msan_get_origin(&x)); 2487 __msan_set_origin(&x, sizeof(x), 5678); 2488 EXPECT_EQ(5678, __msan_get_origin(&x)); 2489 __msan_set_origin(&x, sizeof(x), 0); 2490 EXPECT_EQ(0, __msan_get_origin(&x)); 2491} 2492 2493namespace { 2494struct S { 2495 U4 dummy; 2496 U2 a; 2497 U2 b; 2498}; 2499 2500// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2501TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2502 if (!TrackingOrigins()) return; 2503 2504 S s; 2505 U4 origin = rand(); // NOLINT 2506 s.a = *GetPoisonedO<U2>(0, origin); 2507 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2508 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2509 2510 s.b = 42; 2511 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2512 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2513} 2514} // namespace 2515 2516template<class T, class BinaryOp> 2517INLINE 2518void BinaryOpOriginTest(BinaryOp op) { 2519 U4 ox = rand(); //NOLINT 2520 U4 oy = rand(); //NOLINT 2521 T *x = GetPoisonedO<T>(0, ox, 0); 2522 T *y = GetPoisonedO<T>(1, oy, 0); 2523 T *z = GetPoisonedO<T>(2, 0, 0); 2524 2525 *z = op(*x, *y); 2526 U4 origin = __msan_get_origin(z); 2527 EXPECT_POISONED_O(*z, origin); 2528 EXPECT_EQ(true, origin == ox || origin == oy); 2529 2530 // y is poisoned, x is not. 2531 *x = 10101; 2532 *y = *GetPoisonedO<T>(1, oy); 2533 break_optimization(x); 2534 __msan_set_origin(z, sizeof(*z), 0); 2535 *z = op(*x, *y); 2536 EXPECT_POISONED_O(*z, oy); 2537 EXPECT_EQ(__msan_get_origin(z), oy); 2538 2539 // x is poisoned, y is not. 2540 *x = *GetPoisonedO<T>(0, ox); 2541 *y = 10101010; 2542 break_optimization(y); 2543 __msan_set_origin(z, sizeof(*z), 0); 2544 *z = op(*x, *y); 2545 EXPECT_POISONED_O(*z, ox); 2546 EXPECT_EQ(__msan_get_origin(z), ox); 2547} 2548 2549template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2550template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2551template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2552template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2553template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2554template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2555 2556TEST(MemorySanitizerOrigins, BinaryOp) { 2557 if (!TrackingOrigins()) return; 2558 BinaryOpOriginTest<S8>(XOR<S8>); 2559 BinaryOpOriginTest<U8>(ADD<U8>); 2560 BinaryOpOriginTest<S4>(SUB<S4>); 2561 BinaryOpOriginTest<S4>(MUL<S4>); 2562 BinaryOpOriginTest<U4>(OR<U4>); 2563 BinaryOpOriginTest<U4>(AND<U4>); 2564 BinaryOpOriginTest<double>(ADD<U4>); 2565 BinaryOpOriginTest<float>(ADD<S4>); 2566 BinaryOpOriginTest<double>(ADD<double>); 2567 BinaryOpOriginTest<float>(ADD<double>); 2568} 2569 2570TEST(MemorySanitizerOrigins, Unary) { 2571 if (!TrackingOrigins()) return; 2572 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2573 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2574 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2575 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2576 2577 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2578 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2579 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2580 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2581 2582 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2583 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2584 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2585 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2586 2587 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2588 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2589 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2590 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2591 2592 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2593 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2594} 2595 2596TEST(MemorySanitizerOrigins, EQ) { 2597 if (!TrackingOrigins()) return; 2598 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2599 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2600 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2601} 2602 2603TEST(MemorySanitizerOrigins, DIV) { 2604 if (!TrackingOrigins()) return; 2605 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2606 unsigned o = __LINE__; 2607 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2608} 2609 2610TEST(MemorySanitizerOrigins, SHIFT) { 2611 if (!TrackingOrigins()) return; 2612 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2613 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2614 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2615 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2616 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2617 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2618} 2619 2620template<class T, int N> 2621void MemCpyTest() { 2622 int ox = __LINE__; 2623 T *x = new T[N]; 2624 T *y = new T[N]; 2625 T *z = new T[N]; 2626 T *q = new T[N]; 2627 __msan_poison(x, N * sizeof(T)); 2628 __msan_set_origin(x, N * sizeof(T), ox); 2629 __msan_set_origin(y, N * sizeof(T), 777777); 2630 __msan_set_origin(z, N * sizeof(T), 888888); 2631 EXPECT_NOT_POISONED(x); 2632 memcpy(y, x, N * sizeof(T)); 2633 EXPECT_POISONED_O(y[0], ox); 2634 EXPECT_POISONED_O(y[N/2], ox); 2635 EXPECT_POISONED_O(y[N-1], ox); 2636 EXPECT_NOT_POISONED(x); 2637 void *res = mempcpy(q, x, N * sizeof(T)); 2638 ASSERT_EQ(q + N, res); 2639 EXPECT_POISONED_O(q[0], ox); 2640 EXPECT_POISONED_O(q[N/2], ox); 2641 EXPECT_POISONED_O(q[N-1], ox); 2642 EXPECT_NOT_POISONED(x); 2643 memmove(z, x, N * sizeof(T)); 2644 EXPECT_POISONED_O(z[0], ox); 2645 EXPECT_POISONED_O(z[N/2], ox); 2646 EXPECT_POISONED_O(z[N-1], ox); 2647} 2648 2649TEST(MemorySanitizerOrigins, LargeMemCpy) { 2650 if (!TrackingOrigins()) return; 2651 MemCpyTest<U1, 10000>(); 2652 MemCpyTest<U8, 10000>(); 2653} 2654 2655TEST(MemorySanitizerOrigins, SmallMemCpy) { 2656 if (!TrackingOrigins()) return; 2657 MemCpyTest<U8, 1>(); 2658 MemCpyTest<U8, 2>(); 2659 MemCpyTest<U8, 3>(); 2660} 2661 2662TEST(MemorySanitizerOrigins, Select) { 2663 if (!TrackingOrigins()) return; 2664 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2665 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2666 S4 x; 2667 break_optimization(&x); 2668 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2669 2670 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2671 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2672} 2673 2674extern "C" 2675NOINLINE char AllocaTO() { 2676 int ar[100]; 2677 break_optimization(ar); 2678 return ar[10]; 2679 // fprintf(stderr, "Descr: %s\n", 2680 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2681} 2682 2683TEST(MemorySanitizerOrigins, Alloca) { 2684 if (!TrackingOrigins()) return; 2685 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2686 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2687 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2688 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2689} 2690 2691// FIXME: replace with a lit-like test. 2692TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2693 if (!TrackingOrigins()) return; 2694 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2695} 2696 2697NOINLINE int RetvalOriginTest(U4 origin) { 2698 int *a = new int; 2699 break_optimization(a); 2700 __msan_set_origin(a, sizeof(*a), origin); 2701 int res = *a; 2702 delete a; 2703 return res; 2704} 2705 2706TEST(MemorySanitizerOrigins, Retval) { 2707 if (!TrackingOrigins()) return; 2708 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2709} 2710 2711NOINLINE void ParamOriginTest(int param, U4 origin) { 2712 EXPECT_POISONED_O(param, origin); 2713} 2714 2715TEST(MemorySanitizerOrigins, Param) { 2716 if (!TrackingOrigins()) return; 2717 int *a = new int; 2718 U4 origin = __LINE__; 2719 break_optimization(a); 2720 __msan_set_origin(a, sizeof(*a), origin); 2721 ParamOriginTest(*a, origin); 2722 delete a; 2723} 2724 2725TEST(MemorySanitizerOrigins, Invoke) { 2726 if (!TrackingOrigins()) return; 2727 StructWithDtor s; // Will cause the calls to become invokes. 2728 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2729} 2730 2731TEST(MemorySanitizerOrigins, strlen) { 2732 S8 alignment; 2733 break_optimization(&alignment); 2734 char x[4] = {'a', 'b', 0, 0}; 2735 __msan_poison(&x[2], 1); 2736 U4 origin = __LINE__; 2737 __msan_set_origin(x, sizeof(x), origin); 2738 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2739} 2740 2741TEST(MemorySanitizerOrigins, wcslen) { 2742 wchar_t w[3] = {'a', 'b', 0}; 2743 U4 origin = __LINE__; 2744 __msan_set_origin(w, sizeof(w), origin); 2745 __msan_poison(&w[2], sizeof(wchar_t)); 2746 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 2747} 2748 2749#if MSAN_HAS_M128 2750TEST(MemorySanitizerOrigins, StoreIntrinsic) { 2751 __m128 x, y; 2752 U4 origin = __LINE__; 2753 __msan_set_origin(&x, sizeof(x), origin); 2754 __msan_poison(&x, sizeof(x)); 2755 __builtin_ia32_storeups((float*)&y, x); 2756 EXPECT_POISONED_O(y, origin); 2757} 2758#endif 2759 2760NOINLINE void RecursiveMalloc(int depth) { 2761 static int count; 2762 count++; 2763 if ((count % (1024 * 1024)) == 0) 2764 printf("RecursiveMalloc: %d\n", count); 2765 int *x1 = new int; 2766 int *x2 = new int; 2767 break_optimization(x1); 2768 break_optimization(x2); 2769 if (depth > 0) { 2770 RecursiveMalloc(depth-1); 2771 RecursiveMalloc(depth-1); 2772 } 2773 delete x1; 2774 delete x2; 2775} 2776 2777TEST(MemorySanitizer, CallocOverflow) { 2778 size_t kArraySize = 4096; 2779 volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 2780 volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 2781 void *p = calloc(kArraySize, kArraySize2); // Should return 0. 2782 EXPECT_EQ(0L, Ident(p)); 2783} 2784 2785TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 2786 RecursiveMalloc(22); 2787} 2788 2789TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 2790 size_t sizes[] = {0, 20, 5000, 1<<20}; 2791 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 2792 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 2793 EXPECT_EQ(alloc_size, sizes[i]); 2794 } 2795} 2796 2797TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 2798 char *array = reinterpret_cast<char*>(malloc(100)); 2799 int *int_ptr = new int; 2800 2801 EXPECT_TRUE(__msan_get_ownership(array)); 2802 EXPECT_EQ(100, __msan_get_allocated_size(array)); 2803 2804 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 2805 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 2806 2807 void *wild_addr = reinterpret_cast<void*>(0x1); 2808 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 2809 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 2810 2811 EXPECT_FALSE(__msan_get_ownership(array + 50)); 2812 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 2813 2814 // NULL is a valid argument for GetAllocatedSize but is not owned. 2815 EXPECT_FALSE(__msan_get_ownership(NULL)); 2816 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 2817 2818 free(array); 2819 EXPECT_FALSE(__msan_get_ownership(array)); 2820 EXPECT_EQ(0, __msan_get_allocated_size(array)); 2821 2822 delete int_ptr; 2823} 2824