msan_test.cc revision 67505a8a0cf9621243ed21b67dfa041224c78e4b
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, readdir) { 930 DIR *dir = opendir("."); 931 struct dirent *d = readdir(dir); 932 assert(d); 933 EXPECT_NOT_POISONED(d->d_name[0]); 934 closedir(dir); 935} 936 937TEST(MemorySanitizer, readdir_r) { 938 DIR *dir = opendir("."); 939 struct dirent d; 940 struct dirent *pd; 941 int res = readdir_r(dir, &d, &pd); 942 assert(!res); 943 EXPECT_NOT_POISONED(pd); 944 EXPECT_NOT_POISONED(d.d_name[0]); 945 closedir(dir); 946} 947 948TEST(MemorySanitizer, realpath) { 949 const char* relpath = "."; 950 char path[PATH_MAX + 1]; 951 char* res = realpath(relpath, path); 952 assert(res); 953 EXPECT_NOT_POISONED(path[0]); 954} 955 956TEST(MemorySanitizer, realpath_null) { 957 const char* relpath = "."; 958 char* res = realpath(relpath, NULL); 959 printf("%d, %s\n", errno, strerror(errno)); 960 assert(res); 961 EXPECT_NOT_POISONED(res[0]); 962 free(res); 963} 964 965TEST(MemorySanitizer, canonicalize_file_name) { 966 const char* relpath = "."; 967 char* res = canonicalize_file_name(relpath); 968 assert(res); 969 EXPECT_NOT_POISONED(res[0]); 970 free(res); 971} 972 973TEST(MemorySanitizer, memcpy) { 974 char* x = new char[2]; 975 char* y = new char[2]; 976 x[0] = 1; 977 x[1] = *GetPoisoned<char>(); 978 memcpy(y, x, 2); 979 EXPECT_NOT_POISONED(y[0]); 980 EXPECT_POISONED(y[1]); 981} 982 983TEST(MemorySanitizer, memmove) { 984 char* x = new char[2]; 985 char* y = new char[2]; 986 x[0] = 1; 987 x[1] = *GetPoisoned<char>(); 988 memmove(y, x, 2); 989 EXPECT_NOT_POISONED(y[0]); 990 EXPECT_POISONED(y[1]); 991} 992 993TEST(MemorySanitizer, bcopy) { 994 char* x = new char[2]; 995 char* y = new char[2]; 996 x[0] = 1; 997 x[1] = *GetPoisoned<char>(); 998 bcopy(x, y, 2); 999 EXPECT_NOT_POISONED(y[0]); 1000 EXPECT_POISONED(y[1]); 1001} 1002 1003TEST(MemorySanitizer, strdup) { 1004 char buf[4] = "abc"; 1005 __msan_poison(buf + 2, sizeof(*buf)); 1006 char *x = strdup(buf); 1007 EXPECT_NOT_POISONED(x[0]); 1008 EXPECT_NOT_POISONED(x[1]); 1009 EXPECT_POISONED(x[2]); 1010 EXPECT_NOT_POISONED(x[3]); 1011 free(x); 1012} 1013 1014TEST(MemorySanitizer, strndup) { 1015 char buf[4] = "abc"; 1016 __msan_poison(buf + 2, sizeof(*buf)); 1017 char *x = strndup(buf, 3); 1018 EXPECT_NOT_POISONED(x[0]); 1019 EXPECT_NOT_POISONED(x[1]); 1020 EXPECT_POISONED(x[2]); 1021 EXPECT_NOT_POISONED(x[3]); 1022 free(x); 1023} 1024 1025TEST(MemorySanitizer, strndup_short) { 1026 char buf[4] = "abc"; 1027 __msan_poison(buf + 1, sizeof(*buf)); 1028 __msan_poison(buf + 2, sizeof(*buf)); 1029 char *x = strndup(buf, 2); 1030 EXPECT_NOT_POISONED(x[0]); 1031 EXPECT_POISONED(x[1]); 1032 EXPECT_NOT_POISONED(x[2]); 1033 free(x); 1034} 1035 1036 1037template<class T, int size> 1038void TestOverlapMemmove() { 1039 T *x = new T[size]; 1040 assert(size >= 3); 1041 x[2] = 0; 1042 memmove(x, x + 1, (size - 1) * sizeof(T)); 1043 EXPECT_NOT_POISONED(x[1]); 1044 if (!__msan_has_dynamic_component()) { 1045 // FIXME: under DR we will lose this information 1046 // because accesses in memmove will unpoisin the shadow. 1047 // We need to use our own memove implementation instead of libc's. 1048 EXPECT_POISONED(x[0]); 1049 EXPECT_POISONED(x[2]); 1050 } 1051 delete [] x; 1052} 1053 1054TEST(MemorySanitizer, overlap_memmove) { 1055 TestOverlapMemmove<U1, 10>(); 1056 TestOverlapMemmove<U1, 1000>(); 1057 TestOverlapMemmove<U8, 4>(); 1058 TestOverlapMemmove<U8, 1000>(); 1059} 1060 1061TEST(MemorySanitizer, strcpy) { // NOLINT 1062 char* x = new char[3]; 1063 char* y = new char[3]; 1064 x[0] = 'a'; 1065 x[1] = *GetPoisoned<char>(1, 1); 1066 x[2] = 0; 1067 strcpy(y, x); // NOLINT 1068 EXPECT_NOT_POISONED(y[0]); 1069 EXPECT_POISONED(y[1]); 1070 EXPECT_NOT_POISONED(y[2]); 1071} 1072 1073TEST(MemorySanitizer, strncpy) { // NOLINT 1074 char* x = new char[3]; 1075 char* y = new char[3]; 1076 x[0] = 'a'; 1077 x[1] = *GetPoisoned<char>(1, 1); 1078 x[2] = 0; 1079 strncpy(y, x, 2); // NOLINT 1080 EXPECT_NOT_POISONED(y[0]); 1081 EXPECT_POISONED(y[1]); 1082 EXPECT_POISONED(y[2]); 1083} 1084 1085TEST(MemorySanitizer, stpcpy) { // NOLINT 1086 char* x = new char[3]; 1087 char* y = new char[3]; 1088 x[0] = 'a'; 1089 x[1] = *GetPoisoned<char>(1, 1); 1090 x[2] = 0; 1091 char *res = stpcpy(y, x); // NOLINT 1092 ASSERT_EQ(res, y + 2); 1093 EXPECT_NOT_POISONED(y[0]); 1094 EXPECT_POISONED(y[1]); 1095 EXPECT_NOT_POISONED(y[2]); 1096} 1097 1098TEST(MemorySanitizer, strtol) { 1099 char *e; 1100 assert(1 == strtol("1", &e, 10)); 1101 EXPECT_NOT_POISONED((S8) e); 1102} 1103 1104TEST(MemorySanitizer, strtoll) { 1105 char *e; 1106 assert(1 == strtoll("1", &e, 10)); 1107 EXPECT_NOT_POISONED((S8) e); 1108} 1109 1110TEST(MemorySanitizer, strtoul) { 1111 char *e; 1112 assert(1 == strtoul("1", &e, 10)); 1113 EXPECT_NOT_POISONED((S8) e); 1114} 1115 1116TEST(MemorySanitizer, strtoull) { 1117 char *e; 1118 assert(1 == strtoull("1", &e, 10)); 1119 EXPECT_NOT_POISONED((S8) e); 1120} 1121 1122TEST(MemorySanitizer, strtoimax) { 1123 char *e; 1124 assert(1 == strtoimax("1", &e, 10)); 1125 EXPECT_NOT_POISONED((S8) e); 1126} 1127 1128TEST(MemorySanitizer, strtoumax) { 1129 char *e; 1130 assert(1 == strtoumax("1", &e, 10)); 1131 EXPECT_NOT_POISONED((S8) e); 1132} 1133 1134TEST(MemorySanitizer, strtod) { 1135 char *e; 1136 assert(0 != strtod("1.5", &e)); 1137 EXPECT_NOT_POISONED((S8) e); 1138} 1139 1140TEST(MemorySanitizer, strtof) { 1141 char *e; 1142 assert(0 != strtof("1.5", &e)); 1143 EXPECT_NOT_POISONED((S8) e); 1144} 1145 1146TEST(MemorySanitizer, strtold) { 1147 char *e; 1148 assert(0 != strtold("1.5", &e)); 1149 EXPECT_NOT_POISONED((S8) e); 1150} 1151 1152TEST(MemorySanitizer, modf) { 1153 double x, y; 1154 x = modf(2.1, &y); 1155 EXPECT_NOT_POISONED(y); 1156} 1157 1158TEST(MemorySanitizer, modff) { 1159 float x, y; 1160 x = modff(2.1, &y); 1161 EXPECT_NOT_POISONED(y); 1162} 1163 1164TEST(MemorySanitizer, modfl) { 1165 long double x, y; 1166 x = modfl(2.1, &y); 1167 EXPECT_NOT_POISONED(y); 1168} 1169 1170TEST(MemorySanitizer, sprintf) { // NOLINT 1171 char buff[10]; 1172 break_optimization(buff); 1173 EXPECT_POISONED(buff[0]); 1174 int res = sprintf(buff, "%d", 1234567); // NOLINT 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, snprintf) { 1185 char buff[10]; 1186 break_optimization(buff); 1187 EXPECT_POISONED(buff[0]); 1188 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1189 assert(res == 7); 1190 assert(buff[0] == '1'); 1191 assert(buff[1] == '2'); 1192 assert(buff[2] == '3'); 1193 assert(buff[6] == '7'); 1194 assert(buff[7] == 0); 1195 EXPECT_POISONED(buff[8]); 1196} 1197 1198TEST(MemorySanitizer, swprintf) { 1199 wchar_t buff[10]; 1200 assert(sizeof(wchar_t) == 4); 1201 break_optimization(buff); 1202 EXPECT_POISONED(buff[0]); 1203 int res = swprintf(buff, 9, L"%d", 1234567); 1204 assert(res == 7); 1205 assert(buff[0] == '1'); 1206 assert(buff[1] == '2'); 1207 assert(buff[2] == '3'); 1208 assert(buff[6] == '7'); 1209 assert(buff[7] == 0); 1210 EXPECT_POISONED(buff[8]); 1211} 1212 1213TEST(MemorySanitizer, asprintf) { // NOLINT 1214 char *pbuf; 1215 EXPECT_POISONED(pbuf); 1216 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1217 assert(res == 7); 1218 EXPECT_NOT_POISONED(pbuf); 1219 assert(pbuf[0] == '1'); 1220 assert(pbuf[1] == '2'); 1221 assert(pbuf[2] == '3'); 1222 assert(pbuf[6] == '7'); 1223 assert(pbuf[7] == 0); 1224 free(pbuf); 1225} 1226 1227TEST(MemorySanitizer, mbstowcs) { 1228 const char *x = "abc"; 1229 wchar_t buff[10]; 1230 int res = mbstowcs(buff, x, 2); 1231 EXPECT_EQ(2, res); 1232 EXPECT_EQ(L'a', buff[0]); 1233 EXPECT_EQ(L'b', buff[1]); 1234 EXPECT_POISONED(buff[2]); 1235 res = mbstowcs(buff, x, 10); 1236 EXPECT_EQ(3, res); 1237 EXPECT_NOT_POISONED(buff[3]); 1238} 1239 1240TEST(MemorySanitizer, wcstombs) { 1241 const wchar_t *x = L"abc"; 1242 char buff[10]; 1243 int res = wcstombs(buff, x, 4); 1244 EXPECT_EQ(res, 3); 1245 EXPECT_EQ(buff[0], 'a'); 1246 EXPECT_EQ(buff[1], 'b'); 1247 EXPECT_EQ(buff[2], 'c'); 1248} 1249 1250TEST(MemorySanitizer, wcsrtombs) { 1251 const wchar_t *x = L"abc"; 1252 const wchar_t *p = x; 1253 char buff[10]; 1254 mbstate_t mbs; 1255 memset(&mbs, 0, sizeof(mbs)); 1256 int res = wcsrtombs(buff, &p, 4, &mbs); 1257 EXPECT_EQ(res, 3); 1258 EXPECT_EQ(buff[0], 'a'); 1259 EXPECT_EQ(buff[1], 'b'); 1260 EXPECT_EQ(buff[2], 'c'); 1261 EXPECT_EQ(buff[3], '\0'); 1262 EXPECT_POISONED(buff[4]); 1263} 1264 1265TEST(MemorySanitizer, wcsnrtombs) { 1266 const wchar_t *x = L"abc"; 1267 const wchar_t *p = x; 1268 char buff[10]; 1269 mbstate_t mbs; 1270 memset(&mbs, 0, sizeof(mbs)); 1271 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1272 EXPECT_EQ(res, 2); 1273 EXPECT_EQ(buff[0], 'a'); 1274 EXPECT_EQ(buff[1], 'b'); 1275 EXPECT_POISONED(buff[2]); 1276} 1277 1278TEST(MemorySanitizer, mbtowc) { 1279 const char *x = "abc"; 1280 wchar_t wx; 1281 int res = mbtowc(&wx, x, 3); 1282 EXPECT_GT(res, 0); 1283 EXPECT_NOT_POISONED(wx); 1284} 1285 1286TEST(MemorySanitizer, mbrtowc) { 1287 const char *x = "abc"; 1288 wchar_t wx; 1289 mbstate_t mbs; 1290 memset(&mbs, 0, sizeof(mbs)); 1291 int res = mbrtowc(&wx, x, 3, &mbs); 1292 EXPECT_GT(res, 0); 1293 EXPECT_NOT_POISONED(wx); 1294} 1295 1296TEST(MemorySanitizer, gettimeofday) { 1297 struct timeval tv; 1298 struct timezone tz; 1299 break_optimization(&tv); 1300 break_optimization(&tz); 1301 assert(sizeof(tv) == 16); 1302 assert(sizeof(tz) == 8); 1303 EXPECT_POISONED(tv.tv_sec); 1304 EXPECT_POISONED(tv.tv_usec); 1305 EXPECT_POISONED(tz.tz_minuteswest); 1306 EXPECT_POISONED(tz.tz_dsttime); 1307 assert(0 == gettimeofday(&tv, &tz)); 1308 EXPECT_NOT_POISONED(tv.tv_sec); 1309 EXPECT_NOT_POISONED(tv.tv_usec); 1310 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1311 EXPECT_NOT_POISONED(tz.tz_dsttime); 1312} 1313 1314TEST(MemorySanitizer, clock_gettime) { 1315 struct timespec tp; 1316 EXPECT_POISONED(tp.tv_sec); 1317 EXPECT_POISONED(tp.tv_nsec); 1318 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1319 EXPECT_NOT_POISONED(tp.tv_sec); 1320 EXPECT_NOT_POISONED(tp.tv_nsec); 1321} 1322 1323TEST(MemorySanitizer, clock_getres) { 1324 struct timespec tp; 1325 EXPECT_POISONED(tp.tv_sec); 1326 EXPECT_POISONED(tp.tv_nsec); 1327 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1328 EXPECT_POISONED(tp.tv_sec); 1329 EXPECT_POISONED(tp.tv_nsec); 1330 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1331 EXPECT_NOT_POISONED(tp.tv_sec); 1332 EXPECT_NOT_POISONED(tp.tv_nsec); 1333} 1334 1335TEST(MemorySanitizer, getitimer) { 1336 struct itimerval it1, it2; 1337 int res; 1338 EXPECT_POISONED(it1.it_interval.tv_sec); 1339 EXPECT_POISONED(it1.it_interval.tv_usec); 1340 EXPECT_POISONED(it1.it_value.tv_sec); 1341 EXPECT_POISONED(it1.it_value.tv_usec); 1342 res = getitimer(ITIMER_VIRTUAL, &it1); 1343 assert(!res); 1344 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1345 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1346 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1347 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1348 1349 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1350 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1351 1352 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1353 assert(!res); 1354 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1355 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1356 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1357 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1358 1359 // Check that old_value can be 0, and disable the timer. 1360 memset(&it1, 0, sizeof(it1)); 1361 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1362 assert(!res); 1363} 1364 1365TEST(MemorySanitizer, time) { 1366 time_t t; 1367 EXPECT_POISONED(t); 1368 time_t t2 = time(&t); 1369 assert(t2 != (time_t)-1); 1370 EXPECT_NOT_POISONED(t); 1371} 1372 1373TEST(MemorySanitizer, localtime) { 1374 time_t t = 123; 1375 struct tm *time = localtime(&t); 1376 assert(time != 0); 1377 EXPECT_NOT_POISONED(time->tm_sec); 1378 EXPECT_NOT_POISONED(time->tm_hour); 1379 EXPECT_NOT_POISONED(time->tm_year); 1380 EXPECT_NOT_POISONED(time->tm_isdst); 1381} 1382 1383TEST(MemorySanitizer, localtime_r) { 1384 time_t t = 123; 1385 struct tm time; 1386 struct tm *res = localtime_r(&t, &time); 1387 assert(res != 0); 1388 EXPECT_NOT_POISONED(time.tm_sec); 1389 EXPECT_NOT_POISONED(time.tm_hour); 1390 EXPECT_NOT_POISONED(time.tm_year); 1391 EXPECT_NOT_POISONED(time.tm_isdst); 1392} 1393 1394TEST(MemorySanitizer, mmap) { 1395 const int size = 4096; 1396 void *p1, *p2; 1397 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1398 __msan_poison(p1, size); 1399 munmap(p1, size); 1400 for (int i = 0; i < 1000; i++) { 1401 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1402 if (p2 == p1) 1403 break; 1404 else 1405 munmap(p2, size); 1406 } 1407 if (p1 == p2) { 1408 EXPECT_NOT_POISONED(*(char*)p2); 1409 munmap(p2, size); 1410 } 1411} 1412 1413// FIXME: enable and add ecvt. 1414// FIXME: check why msandr does nt handle fcvt. 1415TEST(MemorySanitizer, fcvt) { 1416 int a, b; 1417 break_optimization(&a); 1418 break_optimization(&b); 1419 EXPECT_POISONED(a); 1420 EXPECT_POISONED(b); 1421 char *str = fcvt(12345.6789, 10, &a, &b); 1422 EXPECT_NOT_POISONED(a); 1423 EXPECT_NOT_POISONED(b); 1424} 1425 1426TEST(MemorySanitizer, frexp) { 1427 int x; 1428 x = *GetPoisoned<int>(); 1429 double r = frexp(1.1, &x); 1430 EXPECT_NOT_POISONED(r); 1431 EXPECT_NOT_POISONED(x); 1432 1433 x = *GetPoisoned<int>(); 1434 float rf = frexpf(1.1, &x); 1435 EXPECT_NOT_POISONED(rf); 1436 EXPECT_NOT_POISONED(x); 1437 1438 x = *GetPoisoned<int>(); 1439 double rl = frexpl(1.1, &x); 1440 EXPECT_NOT_POISONED(rl); 1441 EXPECT_NOT_POISONED(x); 1442} 1443 1444namespace { 1445 1446static int cnt; 1447 1448void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1449 assert(signo == SIGPROF); 1450 assert(si); 1451 EXPECT_NOT_POISONED(si->si_errno); 1452 EXPECT_NOT_POISONED(si->si_pid); 1453#if __linux__ 1454# if defined(__x86_64__) 1455 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1456# elif defined(__i386__) 1457 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1458# endif 1459#endif 1460 ++cnt; 1461} 1462 1463TEST(MemorySanitizer, sigaction) { 1464 struct sigaction act = {}; 1465 struct sigaction oldact = {}; 1466 struct sigaction origact = {}; 1467 1468 sigaction(SIGPROF, 0, &origact); 1469 1470 act.sa_flags |= SA_SIGINFO; 1471 act.sa_sigaction = &SigactionHandler; 1472 sigaction(SIGPROF, &act, 0); 1473 1474 kill(getpid(), SIGPROF); 1475 1476 act.sa_flags &= ~SA_SIGINFO; 1477 act.sa_handler = SIG_DFL; 1478 sigaction(SIGPROF, &act, 0); 1479 1480 act.sa_flags &= ~SA_SIGINFO; 1481 act.sa_handler = SIG_IGN; 1482 sigaction(SIGPROF, &act, &oldact); 1483 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1484 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1485 kill(getpid(), SIGPROF); 1486 1487 act.sa_flags |= SA_SIGINFO; 1488 act.sa_sigaction = &SigactionHandler; 1489 sigaction(SIGPROF, &act, &oldact); 1490 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1491 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1492 kill(getpid(), SIGPROF); 1493 1494 act.sa_flags &= ~SA_SIGINFO; 1495 act.sa_handler = SIG_DFL; 1496 sigaction(SIGPROF, &act, &oldact); 1497 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1498 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1499 EXPECT_EQ(2, cnt); 1500 1501 sigaction(SIGPROF, &origact, 0); 1502} 1503 1504} // namespace 1505 1506struct StructWithDtor { 1507 ~StructWithDtor(); 1508}; 1509 1510NOINLINE StructWithDtor::~StructWithDtor() { 1511 break_optimization(0); 1512} 1513 1514TEST(MemorySanitizer, Invoke) { 1515 StructWithDtor s; // Will cause the calls to become invokes. 1516 EXPECT_NOT_POISONED(0); 1517 EXPECT_POISONED(*GetPoisoned<int>()); 1518 EXPECT_NOT_POISONED(0); 1519 EXPECT_POISONED(*GetPoisoned<int>()); 1520 EXPECT_POISONED(ReturnPoisoned<S4>()); 1521} 1522 1523TEST(MemorySanitizer, ptrtoint) { 1524 // Test that shadow is propagated through pointer-to-integer conversion. 1525 void* p = (void*)0xABCD; 1526 __msan_poison(((char*)&p) + 1, sizeof(p)); 1527 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1528 1529 void* q = (void*)0xABCD; 1530 __msan_poison(&q, sizeof(q) - 1); 1531 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1532} 1533 1534static void vaargsfn2(int guard, ...) { 1535 va_list vl; 1536 va_start(vl, guard); 1537 EXPECT_NOT_POISONED(va_arg(vl, int)); 1538 EXPECT_NOT_POISONED(va_arg(vl, int)); 1539 EXPECT_NOT_POISONED(va_arg(vl, int)); 1540 EXPECT_POISONED(va_arg(vl, double)); 1541 va_end(vl); 1542} 1543 1544static void vaargsfn(int guard, ...) { 1545 va_list vl; 1546 va_start(vl, guard); 1547 EXPECT_NOT_POISONED(va_arg(vl, int)); 1548 EXPECT_POISONED(va_arg(vl, int)); 1549 // The following call will overwrite __msan_param_tls. 1550 // Checks after it test that arg shadow was somehow saved across the call. 1551 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1552 EXPECT_NOT_POISONED(va_arg(vl, int)); 1553 EXPECT_POISONED(va_arg(vl, int)); 1554 va_end(vl); 1555} 1556 1557TEST(MemorySanitizer, VAArgTest) { 1558 int* x = GetPoisoned<int>(); 1559 int* y = GetPoisoned<int>(4); 1560 vaargsfn(1, 13, *x, 42, *y); 1561} 1562 1563static void vaargsfn_many(int guard, ...) { 1564 va_list vl; 1565 va_start(vl, guard); 1566 EXPECT_NOT_POISONED(va_arg(vl, int)); 1567 EXPECT_POISONED(va_arg(vl, int)); 1568 EXPECT_NOT_POISONED(va_arg(vl, int)); 1569 EXPECT_NOT_POISONED(va_arg(vl, int)); 1570 EXPECT_NOT_POISONED(va_arg(vl, int)); 1571 EXPECT_NOT_POISONED(va_arg(vl, int)); 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, int)); 1576 va_end(vl); 1577} 1578 1579TEST(MemorySanitizer, VAArgManyTest) { 1580 int* x = GetPoisoned<int>(); 1581 int* y = GetPoisoned<int>(4); 1582 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1583} 1584 1585static void vaargsfn_pass2(va_list vl) { 1586 EXPECT_NOT_POISONED(va_arg(vl, int)); 1587 EXPECT_NOT_POISONED(va_arg(vl, int)); 1588 EXPECT_POISONED(va_arg(vl, int)); 1589} 1590 1591static void vaargsfn_pass(int guard, ...) { 1592 va_list vl; 1593 va_start(vl, guard); 1594 EXPECT_POISONED(va_arg(vl, int)); 1595 vaargsfn_pass2(vl); 1596 va_end(vl); 1597} 1598 1599TEST(MemorySanitizer, VAArgPass) { 1600 int* x = GetPoisoned<int>(); 1601 int* y = GetPoisoned<int>(4); 1602 vaargsfn_pass(1, *x, 2, 3, *y); 1603} 1604 1605static void vaargsfn_copy2(va_list vl) { 1606 EXPECT_NOT_POISONED(va_arg(vl, int)); 1607 EXPECT_POISONED(va_arg(vl, int)); 1608} 1609 1610static void vaargsfn_copy(int guard, ...) { 1611 va_list vl; 1612 va_start(vl, guard); 1613 EXPECT_NOT_POISONED(va_arg(vl, int)); 1614 EXPECT_POISONED(va_arg(vl, int)); 1615 va_list vl2; 1616 va_copy(vl2, vl); 1617 vaargsfn_copy2(vl2); 1618 EXPECT_NOT_POISONED(va_arg(vl, int)); 1619 EXPECT_POISONED(va_arg(vl, int)); 1620 va_end(vl); 1621} 1622 1623TEST(MemorySanitizer, VAArgCopy) { 1624 int* x = GetPoisoned<int>(); 1625 int* y = GetPoisoned<int>(4); 1626 vaargsfn_copy(1, 2, *x, 3, *y); 1627} 1628 1629static void vaargsfn_ptr(int guard, ...) { 1630 va_list vl; 1631 va_start(vl, guard); 1632 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1633 EXPECT_POISONED(va_arg(vl, int*)); 1634 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1635 EXPECT_POISONED(va_arg(vl, double*)); 1636 va_end(vl); 1637} 1638 1639TEST(MemorySanitizer, VAArgPtr) { 1640 int** x = GetPoisoned<int*>(); 1641 double** y = GetPoisoned<double*>(8); 1642 int z; 1643 vaargsfn_ptr(1, &z, *x, &z, *y); 1644} 1645 1646static void vaargsfn_overflow(int guard, ...) { 1647 va_list vl; 1648 va_start(vl, guard); 1649 EXPECT_NOT_POISONED(va_arg(vl, int)); 1650 EXPECT_NOT_POISONED(va_arg(vl, int)); 1651 EXPECT_POISONED(va_arg(vl, int)); 1652 EXPECT_NOT_POISONED(va_arg(vl, int)); 1653 EXPECT_NOT_POISONED(va_arg(vl, int)); 1654 EXPECT_NOT_POISONED(va_arg(vl, int)); 1655 1656 EXPECT_NOT_POISONED(va_arg(vl, double)); 1657 EXPECT_NOT_POISONED(va_arg(vl, double)); 1658 EXPECT_NOT_POISONED(va_arg(vl, double)); 1659 EXPECT_POISONED(va_arg(vl, double)); 1660 EXPECT_NOT_POISONED(va_arg(vl, double)); 1661 EXPECT_POISONED(va_arg(vl, int*)); 1662 EXPECT_NOT_POISONED(va_arg(vl, double)); 1663 EXPECT_NOT_POISONED(va_arg(vl, double)); 1664 1665 EXPECT_POISONED(va_arg(vl, int)); 1666 EXPECT_POISONED(va_arg(vl, double)); 1667 EXPECT_POISONED(va_arg(vl, int*)); 1668 1669 EXPECT_NOT_POISONED(va_arg(vl, int)); 1670 EXPECT_NOT_POISONED(va_arg(vl, double)); 1671 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1672 1673 EXPECT_POISONED(va_arg(vl, int)); 1674 EXPECT_POISONED(va_arg(vl, double)); 1675 EXPECT_POISONED(va_arg(vl, int*)); 1676 1677 va_end(vl); 1678} 1679 1680TEST(MemorySanitizer, VAArgOverflow) { 1681 int* x = GetPoisoned<int>(); 1682 double* y = GetPoisoned<double>(8); 1683 int** p = GetPoisoned<int*>(16); 1684 int z; 1685 vaargsfn_overflow(1, 1686 1, 2, *x, 4, 5, 6, 1687 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1688 // the following args will overflow for sure 1689 *x, *y, *p, 1690 7, 9.9, &z, 1691 *x, *y, *p); 1692} 1693 1694static void vaargsfn_tlsoverwrite2(int guard, ...) { 1695 va_list vl; 1696 va_start(vl, guard); 1697 EXPECT_NOT_POISONED(va_arg(vl, int)); 1698 va_end(vl); 1699} 1700 1701static void vaargsfn_tlsoverwrite(int guard, ...) { 1702 // This call will overwrite TLS contents unless it's backed up somewhere. 1703 vaargsfn_tlsoverwrite2(2, 42); 1704 va_list vl; 1705 va_start(vl, guard); 1706 EXPECT_POISONED(va_arg(vl, int)); 1707 va_end(vl); 1708} 1709 1710TEST(MemorySanitizer, VAArgTLSOverwrite) { 1711 int* x = GetPoisoned<int>(); 1712 vaargsfn_tlsoverwrite(1, *x); 1713} 1714 1715struct StructByVal { 1716 int a, b, c, d, e, f; 1717}; 1718 1719NOINLINE void StructByValTestFunc(struct StructByVal s) { 1720 EXPECT_NOT_POISONED(s.a); 1721 EXPECT_POISONED(s.b); 1722 EXPECT_NOT_POISONED(s.c); 1723 EXPECT_POISONED(s.d); 1724 EXPECT_NOT_POISONED(s.e); 1725 EXPECT_POISONED(s.f); 1726} 1727 1728NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1729 StructByValTestFunc(s); 1730} 1731 1732NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1733 StructByValTestFunc(s); 1734} 1735 1736TEST(MemorySanitizer, StructByVal) { 1737 // Large aggregates are passed as "byval" pointer argument in LLVM. 1738 struct StructByVal s; 1739 s.a = 1; 1740 s.b = *GetPoisoned<int>(); 1741 s.c = 2; 1742 s.d = *GetPoisoned<int>(); 1743 s.e = 3; 1744 s.f = *GetPoisoned<int>(); 1745 StructByValTestFunc(s); 1746 StructByValTestFunc1(s); 1747 StructByValTestFunc2(0, s); 1748} 1749 1750 1751#if MSAN_HAS_M128 1752NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1753NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1754TEST(MemorySanitizer, m128) { 1755 __m128i a = _mm_set1_epi16(0x1234); 1756 __m128i b = _mm_set1_epi16(0x7890); 1757 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1758 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1759} 1760// FIXME: add more tests for __m128i. 1761#endif // MSAN_HAS_M128 1762 1763// We should not complain when copying this poisoned hole. 1764struct StructWithHole { 1765 U4 a; 1766 // 4-byte hole. 1767 U8 b; 1768}; 1769 1770NOINLINE StructWithHole ReturnStructWithHole() { 1771 StructWithHole res; 1772 __msan_poison(&res, sizeof(res)); 1773 res.a = 1; 1774 res.b = 2; 1775 return res; 1776} 1777 1778TEST(MemorySanitizer, StructWithHole) { 1779 StructWithHole a = ReturnStructWithHole(); 1780 break_optimization(&a); 1781} 1782 1783template <class T> 1784NOINLINE T ReturnStruct() { 1785 T res; 1786 __msan_poison(&res, sizeof(res)); 1787 res.a = 1; 1788 return res; 1789} 1790 1791template <class T> 1792NOINLINE void TestReturnStruct() { 1793 T s1 = ReturnStruct<T>(); 1794 EXPECT_NOT_POISONED(s1.a); 1795 EXPECT_POISONED(s1.b); 1796} 1797 1798struct SSS1 { 1799 int a, b, c; 1800}; 1801struct SSS2 { 1802 int b, a, c; 1803}; 1804struct SSS3 { 1805 int b, c, a; 1806}; 1807struct SSS4 { 1808 int c, b, a; 1809}; 1810 1811struct SSS5 { 1812 int a; 1813 float b; 1814}; 1815struct SSS6 { 1816 int a; 1817 double b; 1818}; 1819struct SSS7 { 1820 S8 b; 1821 int a; 1822}; 1823struct SSS8 { 1824 S2 b; 1825 S8 a; 1826}; 1827 1828TEST(MemorySanitizer, IntStruct3) { 1829 TestReturnStruct<SSS1>(); 1830 TestReturnStruct<SSS2>(); 1831 TestReturnStruct<SSS3>(); 1832 TestReturnStruct<SSS4>(); 1833 TestReturnStruct<SSS5>(); 1834 TestReturnStruct<SSS6>(); 1835 TestReturnStruct<SSS7>(); 1836 TestReturnStruct<SSS8>(); 1837} 1838 1839struct LongStruct { 1840 U1 a1, b1; 1841 U2 a2, b2; 1842 U4 a4, b4; 1843 U8 a8, b8; 1844}; 1845 1846NOINLINE LongStruct ReturnLongStruct1() { 1847 LongStruct res; 1848 __msan_poison(&res, sizeof(res)); 1849 res.a1 = res.a2 = res.a4 = res.a8 = 111; 1850 // leaves b1, .., b8 poisoned. 1851 return res; 1852} 1853 1854NOINLINE LongStruct ReturnLongStruct2() { 1855 LongStruct res; 1856 __msan_poison(&res, sizeof(res)); 1857 res.b1 = res.b2 = res.b4 = res.b8 = 111; 1858 // leaves a1, .., a8 poisoned. 1859 return res; 1860} 1861 1862TEST(MemorySanitizer, LongStruct) { 1863 LongStruct s1 = ReturnLongStruct1(); 1864 __msan_print_shadow(&s1, sizeof(s1)); 1865 EXPECT_NOT_POISONED(s1.a1); 1866 EXPECT_NOT_POISONED(s1.a2); 1867 EXPECT_NOT_POISONED(s1.a4); 1868 EXPECT_NOT_POISONED(s1.a8); 1869 1870 EXPECT_POISONED(s1.b1); 1871 EXPECT_POISONED(s1.b2); 1872 EXPECT_POISONED(s1.b4); 1873 EXPECT_POISONED(s1.b8); 1874 1875 LongStruct s2 = ReturnLongStruct2(); 1876 __msan_print_shadow(&s2, sizeof(s2)); 1877 EXPECT_NOT_POISONED(s2.b1); 1878 EXPECT_NOT_POISONED(s2.b2); 1879 EXPECT_NOT_POISONED(s2.b4); 1880 EXPECT_NOT_POISONED(s2.b8); 1881 1882 EXPECT_POISONED(s2.a1); 1883 EXPECT_POISONED(s2.a2); 1884 EXPECT_POISONED(s2.a4); 1885 EXPECT_POISONED(s2.a8); 1886} 1887 1888TEST(MemorySanitizer, getrlimit) { 1889 struct rlimit limit; 1890 __msan_poison(&limit, sizeof(limit)); 1891 int result = getrlimit(RLIMIT_DATA, &limit); 1892 assert(result == 0); 1893 EXPECT_NOT_POISONED(limit.rlim_cur); 1894 EXPECT_NOT_POISONED(limit.rlim_max); 1895} 1896 1897TEST(MemorySanitizer, getrusage) { 1898 struct rusage usage; 1899 __msan_poison(&usage, sizeof(usage)); 1900 int result = getrusage(RUSAGE_SELF, &usage); 1901 assert(result == 0); 1902 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 1903 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 1904 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 1905 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 1906 EXPECT_NOT_POISONED(usage.ru_maxrss); 1907 EXPECT_NOT_POISONED(usage.ru_minflt); 1908 EXPECT_NOT_POISONED(usage.ru_majflt); 1909 EXPECT_NOT_POISONED(usage.ru_inblock); 1910 EXPECT_NOT_POISONED(usage.ru_oublock); 1911 EXPECT_NOT_POISONED(usage.ru_nvcsw); 1912 EXPECT_NOT_POISONED(usage.ru_nivcsw); 1913} 1914 1915#ifdef __GLIBC__ 1916extern char *program_invocation_name; 1917#else // __GLIBC__ 1918# error "TODO: port this" 1919#endif 1920 1921static void dladdr_testfn() {} 1922 1923TEST(MemorySanitizer, dladdr) { 1924 Dl_info info; 1925 __msan_poison(&info, sizeof(info)); 1926 int result = dladdr((const void*)dladdr_testfn, &info); 1927 assert(result != 0); 1928 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 1929 if (info.dli_fname) 1930 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 1931 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 1932 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 1933 if (info.dli_sname) 1934 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 1935 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 1936} 1937 1938static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 1939 (*(int *)data)++; 1940 EXPECT_NOT_POISONED(info->dlpi_addr); 1941 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 1942 EXPECT_NOT_POISONED(info->dlpi_phnum); 1943 for (int i = 0; i < info->dlpi_phnum; ++i) 1944 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 1945 return 0; 1946} 1947 1948#ifndef MSAN_TEST_DISABLE_DLOPEN 1949 1950// Compute the path to our loadable DSO. We assume it's in the same 1951// directory. Only use string routines that we intercept so far to do this. 1952static int PathToLoadable(char *buf, size_t sz) { 1953 const char *basename = "libmsan_loadable.x86_64.so"; 1954 char *argv0 = program_invocation_name; 1955 char *last_slash = strrchr(argv0, '/'); 1956 assert(last_slash); 1957 int res = 1958 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 1959 return res < sz ? 0 : res; 1960} 1961 1962TEST(MemorySanitizer, dl_iterate_phdr) { 1963 char path[4096]; 1964 int res = PathToLoadable(path, sizeof(path)); 1965 assert(!res); 1966 1967 // Having at least one dlopen'ed library in the process makes this more 1968 // entertaining. 1969 void *lib = dlopen(path, RTLD_LAZY); 1970 ASSERT_NE((void*)0, lib); 1971 1972 int count = 0; 1973 int result = dl_iterate_phdr(dl_phdr_callback, &count); 1974 assert(count > 0); 1975 1976 dlclose(lib); 1977} 1978 1979 1980TEST(MemorySanitizer, dlopen) { 1981 char path[4096]; 1982 int res = PathToLoadable(path, sizeof(path)); 1983 assert(!res); 1984 1985 // We need to clear shadow for globals when doing dlopen. In order to test 1986 // this, we have to poison the shadow for the DSO before we load it. In 1987 // general this is difficult, but the loader tends to reload things in the 1988 // same place, so we open, close, and then reopen. The global should always 1989 // start out clean after dlopen. 1990 for (int i = 0; i < 2; i++) { 1991 void *lib = dlopen(path, RTLD_LAZY); 1992 if (lib == NULL) { 1993 printf("dlerror: %s\n", dlerror()); 1994 assert(lib != NULL); 1995 } 1996 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 1997 assert(get_dso_global); 1998 void **dso_global = get_dso_global(); 1999 EXPECT_NOT_POISONED(*dso_global); 2000 __msan_poison(dso_global, sizeof(*dso_global)); 2001 EXPECT_POISONED(*dso_global); 2002 dlclose(lib); 2003 } 2004} 2005 2006// Regression test for a crash in dlopen() interceptor. 2007TEST(MemorySanitizer, dlopenFailed) { 2008 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2009 void *lib = dlopen(path, RTLD_LAZY); 2010 ASSERT_EQ(0, lib); 2011} 2012 2013#endif // MSAN_TEST_DISABLE_DLOPEN 2014 2015TEST(MemorySanitizer, scanf) { 2016 const char *input = "42 hello"; 2017 int* d = new int; 2018 char* s = new char[7]; 2019 int res = sscanf(input, "%d %5s", d, s); 2020 printf("res %d\n", res); 2021 assert(res == 2); 2022 EXPECT_NOT_POISONED(*d); 2023 EXPECT_NOT_POISONED(s[0]); 2024 EXPECT_NOT_POISONED(s[1]); 2025 EXPECT_NOT_POISONED(s[2]); 2026 EXPECT_NOT_POISONED(s[3]); 2027 EXPECT_NOT_POISONED(s[4]); 2028 EXPECT_NOT_POISONED(s[5]); 2029 EXPECT_POISONED(s[6]); 2030 delete s; 2031 delete d; 2032} 2033 2034static void *SimpleThread_threadfn(void* data) { 2035 return new int; 2036} 2037 2038TEST(MemorySanitizer, SimpleThread) { 2039 pthread_t t; 2040 void *p; 2041 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2042 assert(!res); 2043 EXPECT_NOT_POISONED(t); 2044 res = pthread_join(t, &p); 2045 assert(!res); 2046 if (!__msan_has_dynamic_component()) // FIXME: intercept pthread_join (?). 2047 __msan_unpoison(&p, sizeof(p)); 2048 delete (int*)p; 2049} 2050 2051static void *SmallStackThread_threadfn(void* data) { 2052 return 0; 2053} 2054 2055TEST(MemorySanitizer, SmallStackThread) { 2056 pthread_attr_t attr; 2057 pthread_t t; 2058 void *p; 2059 int res; 2060 res = pthread_attr_init(&attr); 2061 ASSERT_EQ(0, res); 2062 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2063 ASSERT_EQ(0, res); 2064 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2065 ASSERT_EQ(0, res); 2066 res = pthread_join(t, &p); 2067 ASSERT_EQ(0, res); 2068 res = pthread_attr_destroy(&attr); 2069 ASSERT_EQ(0, res); 2070} 2071 2072TEST(MemorySanitizer, PreAllocatedStackThread) { 2073 pthread_attr_t attr; 2074 pthread_t t; 2075 int res; 2076 res = pthread_attr_init(&attr); 2077 ASSERT_EQ(0, res); 2078 void *stack; 2079 const size_t kStackSize = 64 * 1024; 2080 res = posix_memalign(&stack, 4096, kStackSize); 2081 ASSERT_EQ(0, res); 2082 res = pthread_attr_setstack(&attr, stack, kStackSize); 2083 ASSERT_EQ(0, res); 2084 // A small self-allocated stack can not be extended by the tool. 2085 // In this case pthread_create is expected to fail. 2086 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2087 EXPECT_NE(0, res); 2088 res = pthread_attr_destroy(&attr); 2089 ASSERT_EQ(0, res); 2090} 2091 2092TEST(MemorySanitizer, pthread_getschedparam) { 2093 int policy; 2094 struct sched_param param; 2095 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2096 ASSERT_EQ(0, res); 2097 EXPECT_NOT_POISONED(policy); 2098 EXPECT_NOT_POISONED(param.sched_priority); 2099} 2100 2101TEST(MemorySanitizer, pthread_key_create) { 2102 pthread_key_t key; 2103 int res = pthread_key_create(&key, NULL); 2104 assert(!res); 2105 EXPECT_NOT_POISONED(key); 2106 res = pthread_key_delete(key); 2107 assert(!res); 2108} 2109 2110TEST(MemorySanitizer, posix_memalign) { 2111 void *p; 2112 EXPECT_POISONED(p); 2113 int res = posix_memalign(&p, 4096, 13); 2114 ASSERT_EQ(0, res); 2115 EXPECT_NOT_POISONED(p); 2116 free(p); 2117} 2118 2119TEST(MemorySanitizer, inet_pton) { 2120 const char *s = "1:0:0:0:0:0:0:8"; 2121 unsigned char buf[sizeof(struct in6_addr)]; 2122 int res = inet_pton(AF_INET6, s, buf); 2123 ASSERT_EQ(1, res); 2124 EXPECT_NOT_POISONED(buf[0]); 2125 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2126 2127 char s_out[INET6_ADDRSTRLEN]; 2128 EXPECT_POISONED(s_out[3]); 2129 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2130 ASSERT_NE((void*)0, q); 2131 EXPECT_NOT_POISONED(s_out[3]); 2132} 2133 2134TEST(MemorySanitizer, inet_aton) { 2135 const char *s = "127.0.0.1"; 2136 struct in_addr in[2]; 2137 int res = inet_aton(s, in); 2138 ASSERT_NE(0, res); 2139 EXPECT_NOT_POISONED(in[0]); 2140 EXPECT_POISONED(*(char *)(in + 1)); 2141} 2142 2143TEST(MemorySanitizer, uname) { 2144 struct utsname u; 2145 int res = uname(&u); 2146 assert(!res); 2147 EXPECT_NOT_POISONED(strlen(u.sysname)); 2148 EXPECT_NOT_POISONED(strlen(u.nodename)); 2149 EXPECT_NOT_POISONED(strlen(u.release)); 2150 EXPECT_NOT_POISONED(strlen(u.version)); 2151 EXPECT_NOT_POISONED(strlen(u.machine)); 2152} 2153 2154TEST(MemorySanitizer, gethostname) { 2155 char buf[100]; 2156 int res = gethostname(buf, 100); 2157 assert(!res); 2158 EXPECT_NOT_POISONED(strlen(buf)); 2159} 2160 2161TEST(MemorySanitizer, sysinfo) { 2162 struct sysinfo info; 2163 int res = sysinfo(&info); 2164 assert(!res); 2165 EXPECT_NOT_POISONED(info); 2166} 2167 2168TEST(MemorySanitizer, getpwuid) { 2169 struct passwd *p = getpwuid(0); // root 2170 assert(p); 2171 EXPECT_NOT_POISONED(p->pw_name); 2172 assert(p->pw_name); 2173 EXPECT_NOT_POISONED(p->pw_name[0]); 2174 EXPECT_NOT_POISONED(p->pw_uid); 2175 assert(p->pw_uid == 0); 2176} 2177 2178TEST(MemorySanitizer, getpwnam_r) { 2179 struct passwd pwd; 2180 struct passwd *pwdres; 2181 char buf[10000]; 2182 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2183 assert(!res); 2184 EXPECT_NOT_POISONED(pwd.pw_name); 2185 assert(pwd.pw_name); 2186 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2187 EXPECT_NOT_POISONED(pwd.pw_uid); 2188 assert(pwd.pw_uid == 0); 2189} 2190 2191TEST(MemorySanitizer, getpwnam_r_positive) { 2192 struct passwd pwd; 2193 struct passwd *pwdres; 2194 char s[5]; 2195 strncpy(s, "abcd", 5); 2196 __msan_poison(s, 5); 2197 char buf[10000]; 2198 int res; 2199 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2200} 2201 2202TEST(MemorySanitizer, getgrnam_r) { 2203 struct group grp; 2204 struct group *grpres; 2205 char buf[10000]; 2206 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2207 assert(!res); 2208 EXPECT_NOT_POISONED(grp.gr_name); 2209 assert(grp.gr_name); 2210 EXPECT_NOT_POISONED(grp.gr_name[0]); 2211 EXPECT_NOT_POISONED(grp.gr_gid); 2212} 2213 2214template<class T> 2215static bool applySlt(T value, T shadow) { 2216 __msan_partial_poison(&value, &shadow, sizeof(T)); 2217 volatile bool zzz = true; 2218 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2219 // a shift-and-trunc to get at the highest bit. 2220 volatile bool v = value < 0 || zzz; 2221 return v; 2222} 2223 2224TEST(MemorySanitizer, SignedCompareWithZero) { 2225 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2226 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2227 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2228 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2229 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2230 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2231} 2232 2233template <class T, class S> 2234static T poisoned(T Va, S Sa) { 2235 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2236 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2237 T a; 2238 a = Va; 2239 __msan_partial_poison(&a, &Sa, sizeof(T)); 2240 return a; 2241} 2242 2243TEST(MemorySanitizer, ICmpRelational) { 2244 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2245 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2246 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2247 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2248 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2249 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2250 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2251 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2252 poisoned(-1, 0xFFFFFFFFU)); 2253 2254 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2255 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2256 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2257 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2258 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2259 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2260 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2261 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2262 poisoned(-1, 0xFFFFFFFFU)); 2263 2264 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2265 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2266 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2267 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2268 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2269 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2270 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2271 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2272 poisoned(-1, 0xFFFFFFFFU)); 2273 2274 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2275 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2276 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2277 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2278 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2279 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2280 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2281 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2282 poisoned(-1, 0xFFFFFFFFU)); 2283 2284 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2285 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2286 2287 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2288} 2289 2290#if MSAN_HAS_M128 2291TEST(MemorySanitizer, ICmpVectorRelational) { 2292 EXPECT_NOT_POISONED( 2293 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2294 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2295 EXPECT_NOT_POISONED( 2296 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2297 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2298 EXPECT_POISONED( 2299 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2300 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2301 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2302 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2303} 2304#endif 2305 2306// Volatile bitfield store is implemented as load-mask-store 2307// Test that we don't warn on the store of (uninitialized) padding. 2308struct VolatileBitfieldStruct { 2309 volatile unsigned x : 1; 2310 unsigned y : 1; 2311}; 2312 2313TEST(MemorySanitizer, VolatileBitfield) { 2314 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2315 S->x = 1; 2316 EXPECT_NOT_POISONED((unsigned)S->x); 2317 EXPECT_POISONED((unsigned)S->y); 2318} 2319 2320TEST(MemorySanitizer, UnalignedLoad) { 2321 char x[32]; 2322 memset(x + 8, 0, 16); 2323 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2324 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2325 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2326 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2327 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2328 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2329 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2330 2331 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2332 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2333 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2334 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2335 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2336 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2337 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2338 2339 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2340 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2341 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2342 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2343 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2344 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2345 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2346 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2347 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2348} 2349 2350TEST(MemorySanitizer, UnalignedStore16) { 2351 char x[5]; 2352 U2 y = 0; 2353 __msan_poison(&y, 1); 2354 __sanitizer_unaligned_store16(x + 1, y); 2355 EXPECT_POISONED(x[0]); 2356 EXPECT_POISONED(x[1]); 2357 EXPECT_NOT_POISONED(x[2]); 2358 EXPECT_POISONED(x[3]); 2359 EXPECT_POISONED(x[4]); 2360} 2361 2362TEST(MemorySanitizer, UnalignedStore32) { 2363 char x[8]; 2364 U4 y4 = 0; 2365 __msan_poison(&y4, 2); 2366 __sanitizer_unaligned_store32(x+3, y4); 2367 EXPECT_POISONED(x[0]); 2368 EXPECT_POISONED(x[1]); 2369 EXPECT_POISONED(x[2]); 2370 EXPECT_POISONED(x[3]); 2371 EXPECT_POISONED(x[4]); 2372 EXPECT_NOT_POISONED(x[5]); 2373 EXPECT_NOT_POISONED(x[6]); 2374 EXPECT_POISONED(x[7]); 2375} 2376 2377TEST(MemorySanitizer, UnalignedStore64) { 2378 char x[16]; 2379 U8 y = 0; 2380 __msan_poison(&y, 3); 2381 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2382 __sanitizer_unaligned_store64(x+3, y); 2383 EXPECT_POISONED(x[0]); 2384 EXPECT_POISONED(x[1]); 2385 EXPECT_POISONED(x[2]); 2386 EXPECT_POISONED(x[3]); 2387 EXPECT_POISONED(x[4]); 2388 EXPECT_POISONED(x[5]); 2389 EXPECT_NOT_POISONED(x[6]); 2390 EXPECT_NOT_POISONED(x[7]); 2391 EXPECT_NOT_POISONED(x[8]); 2392 EXPECT_POISONED(x[9]); 2393 EXPECT_NOT_POISONED(x[10]); 2394 EXPECT_POISONED(x[11]); 2395} 2396 2397TEST(MemorySanitizerDr, StoreInDSOTest) { 2398 if (!__msan_has_dynamic_component()) return; 2399 char* s = new char[10]; 2400 dso_memfill(s, 9); 2401 EXPECT_NOT_POISONED(s[5]); 2402 EXPECT_POISONED(s[9]); 2403} 2404 2405int return_poisoned_int() { 2406 return ReturnPoisoned<U8>(); 2407} 2408 2409TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2410 if (!__msan_has_dynamic_component()) return; 2411 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2412} 2413 2414NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2415 EXPECT_POISONED(x); 2416 EXPECT_POISONED(y); 2417 EXPECT_POISONED(z); 2418 return 0; 2419} 2420 2421static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2422 EXPECT_NOT_POISONED(x); 2423 EXPECT_NOT_POISONED(y); 2424 EXPECT_NOT_POISONED(z); 2425 return 0; 2426} 2427 2428TEST(MemorySanitizerDr, CallFromDSOTest) { 2429 if (!__msan_has_dynamic_component()) return; 2430 S8* x = GetPoisoned<S8>(); 2431 S8* y = GetPoisoned<S8>(); 2432 S8* z = GetPoisoned<S8>(); 2433 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2434 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2435} 2436 2437static void StackStoreInDSOFn(int* x, int* y) { 2438 EXPECT_NOT_POISONED(*x); 2439 EXPECT_NOT_POISONED(*y); 2440} 2441 2442TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2443 if (!__msan_has_dynamic_component()) return; 2444 dso_stack_store(StackStoreInDSOFn, 1); 2445} 2446 2447TEST(MemorySanitizerOrigins, SetGet) { 2448 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2449 if (!TrackingOrigins()) return; 2450 int x; 2451 __msan_set_origin(&x, sizeof(x), 1234); 2452 EXPECT_EQ(1234, __msan_get_origin(&x)); 2453 __msan_set_origin(&x, sizeof(x), 5678); 2454 EXPECT_EQ(5678, __msan_get_origin(&x)); 2455 __msan_set_origin(&x, sizeof(x), 0); 2456 EXPECT_EQ(0, __msan_get_origin(&x)); 2457} 2458 2459namespace { 2460struct S { 2461 U4 dummy; 2462 U2 a; 2463 U2 b; 2464}; 2465 2466// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2467TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2468 if (!TrackingOrigins()) return; 2469 2470 S s; 2471 U4 origin = rand(); // NOLINT 2472 s.a = *GetPoisonedO<U2>(0, origin); 2473 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2474 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2475 2476 s.b = 42; 2477 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2478 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2479} 2480} // namespace 2481 2482template<class T, class BinaryOp> 2483INLINE 2484void BinaryOpOriginTest(BinaryOp op) { 2485 U4 ox = rand(); //NOLINT 2486 U4 oy = rand(); //NOLINT 2487 T *x = GetPoisonedO<T>(0, ox, 0); 2488 T *y = GetPoisonedO<T>(1, oy, 0); 2489 T *z = GetPoisonedO<T>(2, 0, 0); 2490 2491 *z = op(*x, *y); 2492 U4 origin = __msan_get_origin(z); 2493 EXPECT_POISONED_O(*z, origin); 2494 EXPECT_EQ(true, origin == ox || origin == oy); 2495 2496 // y is poisoned, x is not. 2497 *x = 10101; 2498 *y = *GetPoisonedO<T>(1, oy); 2499 break_optimization(x); 2500 __msan_set_origin(z, sizeof(*z), 0); 2501 *z = op(*x, *y); 2502 EXPECT_POISONED_O(*z, oy); 2503 EXPECT_EQ(__msan_get_origin(z), oy); 2504 2505 // x is poisoned, y is not. 2506 *x = *GetPoisonedO<T>(0, ox); 2507 *y = 10101010; 2508 break_optimization(y); 2509 __msan_set_origin(z, sizeof(*z), 0); 2510 *z = op(*x, *y); 2511 EXPECT_POISONED_O(*z, ox); 2512 EXPECT_EQ(__msan_get_origin(z), ox); 2513} 2514 2515template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2516template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2517template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2518template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2519template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2520template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2521 2522TEST(MemorySanitizerOrigins, BinaryOp) { 2523 if (!TrackingOrigins()) return; 2524 BinaryOpOriginTest<S8>(XOR<S8>); 2525 BinaryOpOriginTest<U8>(ADD<U8>); 2526 BinaryOpOriginTest<S4>(SUB<S4>); 2527 BinaryOpOriginTest<S4>(MUL<S4>); 2528 BinaryOpOriginTest<U4>(OR<U4>); 2529 BinaryOpOriginTest<U4>(AND<U4>); 2530 BinaryOpOriginTest<double>(ADD<U4>); 2531 BinaryOpOriginTest<float>(ADD<S4>); 2532 BinaryOpOriginTest<double>(ADD<double>); 2533 BinaryOpOriginTest<float>(ADD<double>); 2534} 2535 2536TEST(MemorySanitizerOrigins, Unary) { 2537 if (!TrackingOrigins()) return; 2538 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2539 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2540 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2541 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2542 2543 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2544 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2545 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2546 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2547 2548 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2549 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2550 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2551 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2552 2553 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2554 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2555 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2556 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2557 2558 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2559 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2560} 2561 2562TEST(MemorySanitizerOrigins, EQ) { 2563 if (!TrackingOrigins()) return; 2564 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2565 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2566 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2567} 2568 2569TEST(MemorySanitizerOrigins, DIV) { 2570 if (!TrackingOrigins()) return; 2571 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2572 unsigned o = __LINE__; 2573 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2574} 2575 2576TEST(MemorySanitizerOrigins, SHIFT) { 2577 if (!TrackingOrigins()) return; 2578 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2579 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2580 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2581 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2582 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2583 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2584} 2585 2586template<class T, int N> 2587void MemCpyTest() { 2588 int ox = __LINE__; 2589 T *x = new T[N]; 2590 T *y = new T[N]; 2591 T *z = new T[N]; 2592 T *q = new T[N]; 2593 __msan_poison(x, N * sizeof(T)); 2594 __msan_set_origin(x, N * sizeof(T), ox); 2595 __msan_set_origin(y, N * sizeof(T), 777777); 2596 __msan_set_origin(z, N * sizeof(T), 888888); 2597 EXPECT_NOT_POISONED(x); 2598 memcpy(y, x, N * sizeof(T)); 2599 EXPECT_POISONED_O(y[0], ox); 2600 EXPECT_POISONED_O(y[N/2], ox); 2601 EXPECT_POISONED_O(y[N-1], ox); 2602 EXPECT_NOT_POISONED(x); 2603 void *res = mempcpy(q, x, N * sizeof(T)); 2604 ASSERT_EQ(q + N, res); 2605 EXPECT_POISONED_O(q[0], ox); 2606 EXPECT_POISONED_O(q[N/2], ox); 2607 EXPECT_POISONED_O(q[N-1], ox); 2608 EXPECT_NOT_POISONED(x); 2609 memmove(z, x, N * sizeof(T)); 2610 EXPECT_POISONED_O(z[0], ox); 2611 EXPECT_POISONED_O(z[N/2], ox); 2612 EXPECT_POISONED_O(z[N-1], ox); 2613} 2614 2615TEST(MemorySanitizerOrigins, LargeMemCpy) { 2616 if (!TrackingOrigins()) return; 2617 MemCpyTest<U1, 10000>(); 2618 MemCpyTest<U8, 10000>(); 2619} 2620 2621TEST(MemorySanitizerOrigins, SmallMemCpy) { 2622 if (!TrackingOrigins()) return; 2623 MemCpyTest<U8, 1>(); 2624 MemCpyTest<U8, 2>(); 2625 MemCpyTest<U8, 3>(); 2626} 2627 2628TEST(MemorySanitizerOrigins, Select) { 2629 if (!TrackingOrigins()) return; 2630 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2631 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2632 S4 x; 2633 break_optimization(&x); 2634 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2635 2636 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2637 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2638} 2639 2640extern "C" 2641NOINLINE char AllocaTO() { 2642 int ar[100]; 2643 break_optimization(ar); 2644 return ar[10]; 2645 // fprintf(stderr, "Descr: %s\n", 2646 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2647} 2648 2649TEST(MemorySanitizerOrigins, Alloca) { 2650 if (!TrackingOrigins()) return; 2651 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2652 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2653 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2654 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2655} 2656 2657// FIXME: replace with a lit-like test. 2658TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2659 if (!TrackingOrigins()) return; 2660 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2661} 2662 2663NOINLINE int RetvalOriginTest(U4 origin) { 2664 int *a = new int; 2665 break_optimization(a); 2666 __msan_set_origin(a, sizeof(*a), origin); 2667 int res = *a; 2668 delete a; 2669 return res; 2670} 2671 2672TEST(MemorySanitizerOrigins, Retval) { 2673 if (!TrackingOrigins()) return; 2674 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2675} 2676 2677NOINLINE void ParamOriginTest(int param, U4 origin) { 2678 EXPECT_POISONED_O(param, origin); 2679} 2680 2681TEST(MemorySanitizerOrigins, Param) { 2682 if (!TrackingOrigins()) return; 2683 int *a = new int; 2684 U4 origin = __LINE__; 2685 break_optimization(a); 2686 __msan_set_origin(a, sizeof(*a), origin); 2687 ParamOriginTest(*a, origin); 2688 delete a; 2689} 2690 2691TEST(MemorySanitizerOrigins, Invoke) { 2692 if (!TrackingOrigins()) return; 2693 StructWithDtor s; // Will cause the calls to become invokes. 2694 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2695} 2696 2697TEST(MemorySanitizerOrigins, strlen) { 2698 S8 alignment; 2699 break_optimization(&alignment); 2700 char x[4] = {'a', 'b', 0, 0}; 2701 __msan_poison(&x[2], 1); 2702 U4 origin = __LINE__; 2703 __msan_set_origin(x, sizeof(x), origin); 2704 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2705} 2706 2707TEST(MemorySanitizerOrigins, wcslen) { 2708 wchar_t w[3] = {'a', 'b', 0}; 2709 U4 origin = __LINE__; 2710 __msan_set_origin(w, sizeof(w), origin); 2711 __msan_poison(&w[2], sizeof(wchar_t)); 2712 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 2713} 2714 2715#if MSAN_HAS_M128 2716TEST(MemorySanitizerOrigins, StoreIntrinsic) { 2717 __m128 x, y; 2718 U4 origin = __LINE__; 2719 __msan_set_origin(&x, sizeof(x), origin); 2720 __msan_poison(&x, sizeof(x)); 2721 __builtin_ia32_storeups((float*)&y, x); 2722 EXPECT_POISONED_O(y, origin); 2723} 2724#endif 2725 2726NOINLINE void RecursiveMalloc(int depth) { 2727 static int count; 2728 count++; 2729 if ((count % (1024 * 1024)) == 0) 2730 printf("RecursiveMalloc: %d\n", count); 2731 int *x1 = new int; 2732 int *x2 = new int; 2733 break_optimization(x1); 2734 break_optimization(x2); 2735 if (depth > 0) { 2736 RecursiveMalloc(depth-1); 2737 RecursiveMalloc(depth-1); 2738 } 2739 delete x1; 2740 delete x2; 2741} 2742 2743TEST(MemorySanitizer, CallocOverflow) { 2744 size_t kArraySize = 4096; 2745 volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 2746 volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 2747 void *p = calloc(kArraySize, kArraySize2); // Should return 0. 2748 EXPECT_EQ(0L, Ident(p)); 2749} 2750 2751TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 2752 RecursiveMalloc(22); 2753} 2754