msan_test.cc revision cf39032f101dfb3b97b1dfc7b6d03f5d89dff266
1//===-- msan_test.cc ------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of MemorySanitizer. 11// 12// MemorySanitizer unit tests. 13//===----------------------------------------------------------------------===// 14 15#ifndef MSAN_EXTERNAL_TEST_CONFIG 16#include "msan_test_config.h" 17#endif // MSAN_EXTERNAL_TEST_CONFIG 18 19#include "sanitizer/msan_interface.h" 20#include "msandr_test_so.h" 21 22#include <inttypes.h> 23#include <stdlib.h> 24#include <stdarg.h> 25#include <stdio.h> 26#include <assert.h> 27#include <wchar.h> 28#include <math.h> 29#include <malloc.h> 30 31#include <arpa/inet.h> 32#include <dlfcn.h> 33#include <grp.h> 34#include <unistd.h> 35#include <link.h> 36#include <limits.h> 37#include <sys/time.h> 38#include <poll.h> 39#include <sys/types.h> 40#include <sys/stat.h> 41#include <fcntl.h> 42#include <sys/resource.h> 43#include <sys/ioctl.h> 44#include <sys/sysinfo.h> 45#include <sys/utsname.h> 46#include <sys/mman.h> 47#include <sys/vfs.h> 48#include <dirent.h> 49#include <pwd.h> 50#include <sys/socket.h> 51#include <netdb.h> 52#include <wordexp.h> 53 54#if defined(__i386__) || defined(__x86_64__) 55# include <emmintrin.h> 56# define MSAN_HAS_M128 1 57#else 58# define MSAN_HAS_M128 0 59#endif 60 61static const int kPageSize = 4096; 62 63typedef unsigned char U1; 64typedef unsigned short U2; // NOLINT 65typedef unsigned int U4; 66typedef unsigned long long U8; // NOLINT 67typedef signed char S1; 68typedef signed short S2; // NOLINT 69typedef signed int S4; 70typedef signed long long S8; // NOLINT 71#define NOINLINE __attribute__((noinline)) 72#define INLINE __attribute__((always_inline)) 73 74static bool TrackingOrigins() { 75 S8 x; 76 __msan_set_origin(&x, sizeof(x), 0x1234); 77 U4 origin = __msan_get_origin(&x); 78 __msan_set_origin(&x, sizeof(x), 0); 79 return origin == 0x1234; 80} 81 82#define EXPECT_UMR(action) \ 83 do { \ 84 __msan_set_expect_umr(1); \ 85 action; \ 86 __msan_set_expect_umr(0); \ 87 } while (0) 88 89#define EXPECT_UMR_O(action, origin) \ 90 do { \ 91 __msan_set_expect_umr(1); \ 92 action; \ 93 __msan_set_expect_umr(0); \ 94 if (TrackingOrigins()) \ 95 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 96 } while (0) 97 98#define EXPECT_UMR_S(action, stack_origin) \ 99 do { \ 100 __msan_set_expect_umr(1); \ 101 action; \ 102 __msan_set_expect_umr(0); \ 103 U4 id = __msan_get_umr_origin(); \ 104 const char *str = __msan_get_origin_descr_if_stack(id); \ 105 if (!str || strcmp(str, stack_origin)) { \ 106 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 107 id, stack_origin, str); \ 108 EXPECT_EQ(1, 0); \ 109 } \ 110 } while (0) 111 112#define EXPECT_POISONED(x) ExpectPoisoned(x) 113 114template<typename T> 115void ExpectPoisoned(const T& t) { 116 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 117} 118 119#define EXPECT_POISONED_O(x, origin) \ 120 ExpectPoisonedWithOrigin(x, origin) 121 122template<typename T> 123void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 124 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 125 if (TrackingOrigins()) 126 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 127} 128 129#define EXPECT_POISONED_S(x, stack_origin) \ 130 ExpectPoisonedWithStackOrigin(x, stack_origin) 131 132template<typename T> 133void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 134 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 135 U4 id = __msan_get_origin((void*)&t); 136 const char *str = __msan_get_origin_descr_if_stack(id); 137 if (!str || strcmp(str, stack_origin)) { 138 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 139 id, stack_origin, str); 140 EXPECT_EQ(1, 0); 141 } 142} 143 144#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 145 146template<typename T> 147void ExpectNotPoisoned(const T& t) { 148 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 149} 150 151static U8 poisoned_array[100]; 152template<class T> 153T *GetPoisoned(int i = 0, T val = 0) { 154 T *res = (T*)&poisoned_array[i]; 155 *res = val; 156 __msan_poison(&poisoned_array[i], sizeof(T)); 157 return res; 158} 159 160template<class T> 161T *GetPoisonedO(int i, U4 origin, T val = 0) { 162 T *res = (T*)&poisoned_array[i]; 163 *res = val; 164 __msan_poison(&poisoned_array[i], sizeof(T)); 165 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 166 return res; 167} 168 169// This function returns its parameter but in such a way that compiler 170// can not prove it. 171template<class T> 172NOINLINE 173static T Ident(T t) { 174 volatile T ret = t; 175 return ret; 176} 177 178template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 179 180static volatile int g_one = 1; 181static volatile int g_zero = 0; 182static volatile int g_0 = 0; 183static volatile int g_1 = 1; 184 185S4 a_s4[100]; 186S8 a_s8[100]; 187 188// Check that malloc poisons memory. 189// A lot of tests below depend on this. 190TEST(MemorySanitizerSanity, PoisonInMalloc) { 191 int *x = (int*)malloc(sizeof(int)); 192 EXPECT_POISONED(*x); 193 free(x); 194} 195 196TEST(MemorySanitizer, NegativeTest1) { 197 S4 *x = GetPoisoned<S4>(); 198 if (g_one) 199 *x = 0; 200 EXPECT_NOT_POISONED(*x); 201} 202 203TEST(MemorySanitizer, PositiveTest1) { 204 // Load to store. 205 EXPECT_POISONED(*GetPoisoned<S1>()); 206 EXPECT_POISONED(*GetPoisoned<S2>()); 207 EXPECT_POISONED(*GetPoisoned<S4>()); 208 EXPECT_POISONED(*GetPoisoned<S8>()); 209 210 // S->S conversions. 211 EXPECT_POISONED(*GetPoisoned<S1>()); 212 EXPECT_POISONED(*GetPoisoned<S1>()); 213 EXPECT_POISONED(*GetPoisoned<S1>()); 214 215 EXPECT_POISONED(*GetPoisoned<S2>()); 216 EXPECT_POISONED(*GetPoisoned<S2>()); 217 EXPECT_POISONED(*GetPoisoned<S2>()); 218 219 EXPECT_POISONED(*GetPoisoned<S4>()); 220 EXPECT_POISONED(*GetPoisoned<S4>()); 221 EXPECT_POISONED(*GetPoisoned<S4>()); 222 223 EXPECT_POISONED(*GetPoisoned<S8>()); 224 EXPECT_POISONED(*GetPoisoned<S8>()); 225 EXPECT_POISONED(*GetPoisoned<S8>()); 226 227 // ZExt 228 EXPECT_POISONED(*GetPoisoned<U1>()); 229 EXPECT_POISONED(*GetPoisoned<U1>()); 230 EXPECT_POISONED(*GetPoisoned<U1>()); 231 EXPECT_POISONED(*GetPoisoned<U2>()); 232 EXPECT_POISONED(*GetPoisoned<U2>()); 233 EXPECT_POISONED(*GetPoisoned<U4>()); 234 235 // Unary ops. 236 EXPECT_POISONED(- *GetPoisoned<S4>()); 237 238 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 239 240 241 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 242 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 243} 244 245TEST(MemorySanitizer, Phi1) { 246 S4 c; 247 if (g_one) { 248 c = *GetPoisoned<S4>(); 249 } else { 250 break_optimization(0); 251 c = 0; 252 } 253 EXPECT_POISONED(c); 254} 255 256TEST(MemorySanitizer, Phi2) { 257 S4 i = *GetPoisoned<S4>(); 258 S4 n = g_one; 259 EXPECT_UMR(for (; i < g_one; i++);); 260 EXPECT_POISONED(i); 261} 262 263NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 264NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 265NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 266 267TEST(MemorySanitizer, ArgTest) { 268 Arg1ExpectUMR(*GetPoisoned<S4>()); 269 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 270 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 271} 272 273 274TEST(MemorySanitizer, CallAndRet) { 275 if (!__msan_has_dynamic_component()) return; 276 ReturnPoisoned<S1>(); 277 ReturnPoisoned<S2>(); 278 ReturnPoisoned<S4>(); 279 ReturnPoisoned<S8>(); 280 281 EXPECT_POISONED(ReturnPoisoned<S1>()); 282 EXPECT_POISONED(ReturnPoisoned<S2>()); 283 EXPECT_POISONED(ReturnPoisoned<S4>()); 284 EXPECT_POISONED(ReturnPoisoned<S8>()); 285} 286 287// malloc() in the following test may be optimized to produce a compile-time 288// undef value. Check that we trap on the volatile assignment anyway. 289TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 290 S4 *x = (int*)malloc(sizeof(S4)); 291 EXPECT_POISONED(*x); 292 free(x); 293} 294 295TEST(MemorySanitizer, Malloc) { 296 S4 *x = (int*)Ident(malloc(sizeof(S4))); 297 EXPECT_POISONED(*x); 298 free(x); 299} 300 301TEST(MemorySanitizer, Realloc) { 302 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 303 EXPECT_POISONED(x[0]); 304 x[0] = 1; 305 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 306 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 307 EXPECT_POISONED(x[1]); 308 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 309 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 310 EXPECT_POISONED(x[2]); 311 EXPECT_POISONED(x[1]); 312 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 313 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 314 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 315 EXPECT_POISONED(x[1]); 316 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 317 EXPECT_POISONED(x[1]); 318 EXPECT_POISONED(x[2]); 319 free(x); 320} 321 322TEST(MemorySanitizer, Calloc) { 323 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 324 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 325 // EXPECT_EQ(0, *x); 326 free(x); 327} 328 329TEST(MemorySanitizer, AndOr) { 330 U4 *p = GetPoisoned<U4>(); 331 // We poison two bytes in the midle of a 4-byte word to make the test 332 // correct regardless of endianness. 333 ((U1*)p)[1] = 0; 334 ((U1*)p)[2] = 0xff; 335 EXPECT_NOT_POISONED(*p & 0x00ffff00); 336 EXPECT_NOT_POISONED(*p & 0x00ff0000); 337 EXPECT_NOT_POISONED(*p & 0x0000ff00); 338 EXPECT_POISONED(*p & 0xff000000); 339 EXPECT_POISONED(*p & 0x000000ff); 340 EXPECT_POISONED(*p & 0x0000ffff); 341 EXPECT_POISONED(*p & 0xffff0000); 342 343 EXPECT_NOT_POISONED(*p | 0xff0000ff); 344 EXPECT_NOT_POISONED(*p | 0xff00ffff); 345 EXPECT_NOT_POISONED(*p | 0xffff00ff); 346 EXPECT_POISONED(*p | 0xff000000); 347 EXPECT_POISONED(*p | 0x000000ff); 348 EXPECT_POISONED(*p | 0x0000ffff); 349 EXPECT_POISONED(*p | 0xffff0000); 350 351 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 352} 353 354template<class T> 355static bool applyNot(T value, T shadow) { 356 __msan_partial_poison(&value, &shadow, sizeof(T)); 357 return !value; 358} 359 360TEST(MemorySanitizer, Not) { 361 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 362 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 363 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 364 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 365 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 366 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 367 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 368 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 369 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 370 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 371 372 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 373 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 374 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 375 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 376 377 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 378 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 379} 380 381TEST(MemorySanitizer, Shift) { 382 U4 *up = GetPoisoned<U4>(); 383 ((U1*)up)[0] = 0; 384 ((U1*)up)[3] = 0xff; 385 EXPECT_NOT_POISONED(*up >> 30); 386 EXPECT_NOT_POISONED(*up >> 24); 387 EXPECT_POISONED(*up >> 23); 388 EXPECT_POISONED(*up >> 10); 389 390 EXPECT_NOT_POISONED(*up << 30); 391 EXPECT_NOT_POISONED(*up << 24); 392 EXPECT_POISONED(*up << 23); 393 EXPECT_POISONED(*up << 10); 394 395 S4 *sp = (S4*)up; 396 EXPECT_NOT_POISONED(*sp >> 30); 397 EXPECT_NOT_POISONED(*sp >> 24); 398 EXPECT_POISONED(*sp >> 23); 399 EXPECT_POISONED(*sp >> 10); 400 401 sp = GetPoisoned<S4>(); 402 ((S1*)sp)[1] = 0; 403 ((S1*)sp)[2] = 0; 404 EXPECT_POISONED(*sp >> 31); 405 406 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 407 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 408} 409 410NOINLINE static int GetPoisonedZero() { 411 int *zero = new int; 412 *zero = 0; 413 __msan_poison(zero, sizeof(*zero)); 414 int res = *zero; 415 delete zero; 416 return res; 417} 418 419TEST(MemorySanitizer, LoadFromDirtyAddress) { 420 int *a = new int; 421 *a = 0; 422 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 423 delete a; 424} 425 426TEST(MemorySanitizer, StoreToDirtyAddress) { 427 int *a = new int; 428 EXPECT_UMR(a[GetPoisonedZero()] = 0); 429 break_optimization(a); 430 delete a; 431} 432 433 434NOINLINE void StackTestFunc() { 435 S4 p4; 436 S4 ok4 = 1; 437 S2 p2; 438 S2 ok2 = 1; 439 S1 p1; 440 S1 ok1 = 1; 441 break_optimization(&p4); 442 break_optimization(&ok4); 443 break_optimization(&p2); 444 break_optimization(&ok2); 445 break_optimization(&p1); 446 break_optimization(&ok1); 447 448 EXPECT_POISONED(p4); 449 EXPECT_POISONED(p2); 450 EXPECT_POISONED(p1); 451 EXPECT_NOT_POISONED(ok1); 452 EXPECT_NOT_POISONED(ok2); 453 EXPECT_NOT_POISONED(ok4); 454} 455 456TEST(MemorySanitizer, StackTest) { 457 StackTestFunc(); 458} 459 460NOINLINE void StackStressFunc() { 461 int foo[10000]; 462 break_optimization(foo); 463} 464 465TEST(MemorySanitizer, DISABLED_StackStressTest) { 466 for (int i = 0; i < 1000000; i++) 467 StackStressFunc(); 468} 469 470template<class T> 471void TestFloatingPoint() { 472 static volatile T v; 473 static T g[100]; 474 break_optimization(&g); 475 T *x = GetPoisoned<T>(); 476 T *y = GetPoisoned<T>(1); 477 EXPECT_POISONED(*x); 478 EXPECT_POISONED((long long)*x); 479 EXPECT_POISONED((int)*x); 480 g[0] = *x; 481 g[1] = *x + *y; 482 g[2] = *x - *y; 483 g[3] = *x * *y; 484} 485 486TEST(MemorySanitizer, FloatingPointTest) { 487 TestFloatingPoint<float>(); 488 TestFloatingPoint<double>(); 489} 490 491TEST(MemorySanitizer, DynMem) { 492 S4 x = 0; 493 S4 *y = GetPoisoned<S4>(); 494 memcpy(y, &x, g_one * sizeof(S4)); 495 EXPECT_NOT_POISONED(*y); 496} 497 498static char *DynRetTestStr; 499 500TEST(MemorySanitizer, DynRet) { 501 if (!__msan_has_dynamic_component()) return; 502 ReturnPoisoned<S8>(); 503 EXPECT_NOT_POISONED(clearenv()); 504} 505 506 507TEST(MemorySanitizer, DynRet1) { 508 if (!__msan_has_dynamic_component()) return; 509 ReturnPoisoned<S8>(); 510} 511 512struct LargeStruct { 513 S4 x[10]; 514}; 515 516NOINLINE 517LargeStruct LargeRetTest() { 518 LargeStruct res; 519 res.x[0] = *GetPoisoned<S4>(); 520 res.x[1] = *GetPoisoned<S4>(); 521 res.x[2] = *GetPoisoned<S4>(); 522 res.x[3] = *GetPoisoned<S4>(); 523 res.x[4] = *GetPoisoned<S4>(); 524 res.x[5] = *GetPoisoned<S4>(); 525 res.x[6] = *GetPoisoned<S4>(); 526 res.x[7] = *GetPoisoned<S4>(); 527 res.x[8] = *GetPoisoned<S4>(); 528 res.x[9] = *GetPoisoned<S4>(); 529 return res; 530} 531 532TEST(MemorySanitizer, strcmp) { 533 char s1[10]; 534 char s2[10]; 535 strncpy(s1, "foo", 10); 536 s2[0] = 'f'; 537 s2[1] = 'n'; 538 EXPECT_GT(strcmp(s1, s2), 0); 539 s2[1] = 'o'; 540 int res; 541 EXPECT_UMR(res = strcmp(s1, s2)); 542 EXPECT_NOT_POISONED(res); 543 EXPECT_EQ(strncmp(s1, s2, 1), 0); 544} 545 546TEST(MemorySanitizer, LargeRet) { 547 LargeStruct a = LargeRetTest(); 548 EXPECT_POISONED(a.x[0]); 549 EXPECT_POISONED(a.x[9]); 550} 551 552TEST(MemorySanitizer, strerror) { 553 char *buf = strerror(EINVAL); 554 EXPECT_NOT_POISONED(strlen(buf)); 555 buf = strerror(123456); 556 EXPECT_NOT_POISONED(strlen(buf)); 557} 558 559TEST(MemorySanitizer, strerror_r) { 560 errno = 0; 561 char buf[1000]; 562 char *res = strerror_r(EINVAL, buf, sizeof(buf)); 563 ASSERT_EQ(0, errno); 564 if (!res) res = buf; // POSIX version success. 565 EXPECT_NOT_POISONED(strlen(res)); 566} 567 568TEST(MemorySanitizer, fread) { 569 char *x = new char[32]; 570 FILE *f = fopen("/proc/self/stat", "r"); 571 assert(f); 572 fread(x, 1, 32, f); 573 EXPECT_NOT_POISONED(x[0]); 574 EXPECT_NOT_POISONED(x[16]); 575 EXPECT_NOT_POISONED(x[31]); 576 fclose(f); 577 delete x; 578} 579 580TEST(MemorySanitizer, read) { 581 char *x = new char[32]; 582 int fd = open("/proc/self/stat", O_RDONLY); 583 assert(fd > 0); 584 int sz = read(fd, x, 32); 585 assert(sz == 32); 586 EXPECT_NOT_POISONED(x[0]); 587 EXPECT_NOT_POISONED(x[16]); 588 EXPECT_NOT_POISONED(x[31]); 589 close(fd); 590 delete x; 591} 592 593TEST(MemorySanitizer, pread) { 594 char *x = new char[32]; 595 int fd = open("/proc/self/stat", O_RDONLY); 596 assert(fd > 0); 597 int sz = pread(fd, x, 32, 0); 598 assert(sz == 32); 599 EXPECT_NOT_POISONED(x[0]); 600 EXPECT_NOT_POISONED(x[16]); 601 EXPECT_NOT_POISONED(x[31]); 602 close(fd); 603 delete x; 604} 605 606TEST(MemorySanitizer, readv) { 607 char buf[2011]; 608 struct iovec iov[2]; 609 iov[0].iov_base = buf + 1; 610 iov[0].iov_len = 5; 611 iov[1].iov_base = buf + 10; 612 iov[1].iov_len = 2000; 613 int fd = open("/proc/self/stat", O_RDONLY); 614 assert(fd > 0); 615 int sz = readv(fd, iov, 2); 616 ASSERT_LT(sz, 5 + 2000); 617 ASSERT_GT(sz, iov[0].iov_len); 618 EXPECT_POISONED(buf[0]); 619 EXPECT_NOT_POISONED(buf[1]); 620 EXPECT_NOT_POISONED(buf[5]); 621 EXPECT_POISONED(buf[6]); 622 EXPECT_POISONED(buf[9]); 623 EXPECT_NOT_POISONED(buf[10]); 624 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 625 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 626 close(fd); 627} 628 629TEST(MemorySanitizer, preadv) { 630 char buf[2011]; 631 struct iovec iov[2]; 632 iov[0].iov_base = buf + 1; 633 iov[0].iov_len = 5; 634 iov[1].iov_base = buf + 10; 635 iov[1].iov_len = 2000; 636 int fd = open("/proc/self/stat", O_RDONLY); 637 assert(fd > 0); 638 int sz = preadv(fd, iov, 2, 3); 639 ASSERT_LT(sz, 5 + 2000); 640 ASSERT_GT(sz, iov[0].iov_len); 641 EXPECT_POISONED(buf[0]); 642 EXPECT_NOT_POISONED(buf[1]); 643 EXPECT_NOT_POISONED(buf[5]); 644 EXPECT_POISONED(buf[6]); 645 EXPECT_POISONED(buf[9]); 646 EXPECT_NOT_POISONED(buf[10]); 647 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 648 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 649 close(fd); 650} 651 652// FIXME: fails now. 653TEST(MemorySanitizer, DISABLED_ioctl) { 654 struct winsize ws; 655 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 656 EXPECT_NOT_POISONED(ws.ws_col); 657} 658 659TEST(MemorySanitizer, readlink) { 660 char *x = new char[1000]; 661 readlink("/proc/self/exe", x, 1000); 662 EXPECT_NOT_POISONED(x[0]); 663 delete [] x; 664} 665 666 667TEST(MemorySanitizer, stat) { 668 struct stat* st = new struct stat; 669 int res = stat("/proc/self/stat", st); 670 assert(!res); 671 EXPECT_NOT_POISONED(st->st_dev); 672 EXPECT_NOT_POISONED(st->st_mode); 673 EXPECT_NOT_POISONED(st->st_size); 674} 675 676TEST(MemorySanitizer, fstatat) { 677 struct stat* st = new struct stat; 678 int dirfd = open("/proc/self", O_RDONLY); 679 assert(dirfd > 0); 680 int res = fstatat(dirfd, "stat", st, 0); 681 assert(!res); 682 EXPECT_NOT_POISONED(st->st_dev); 683 EXPECT_NOT_POISONED(st->st_mode); 684 EXPECT_NOT_POISONED(st->st_size); 685 close(dirfd); 686} 687 688TEST(MemorySanitizer, statfs) { 689 struct statfs* st = new struct statfs; 690 int res = statfs("/", st); 691 assert(!res); 692 EXPECT_NOT_POISONED(st->f_type); 693 EXPECT_NOT_POISONED(st->f_bfree); 694 EXPECT_NOT_POISONED(st->f_namelen); 695} 696 697TEST(MemorySanitizer, pipe) { 698 int* pipefd = new int[2]; 699 int res = pipe(pipefd); 700 assert(!res); 701 EXPECT_NOT_POISONED(pipefd[0]); 702 EXPECT_NOT_POISONED(pipefd[1]); 703 close(pipefd[0]); 704 close(pipefd[1]); 705} 706 707TEST(MemorySanitizer, pipe2) { 708 int* pipefd = new int[2]; 709 int res = pipe2(pipefd, O_NONBLOCK); 710 assert(!res); 711 EXPECT_NOT_POISONED(pipefd[0]); 712 EXPECT_NOT_POISONED(pipefd[1]); 713 close(pipefd[0]); 714 close(pipefd[1]); 715} 716 717TEST(MemorySanitizer, socketpair) { 718 int sv[2]; 719 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 720 assert(!res); 721 EXPECT_NOT_POISONED(sv[0]); 722 EXPECT_NOT_POISONED(sv[1]); 723 close(sv[0]); 724 close(sv[1]); 725} 726 727TEST(MemorySanitizer, poll) { 728 int* pipefd = new int[2]; 729 int res = pipe(pipefd); 730 ASSERT_EQ(0, res); 731 732 char data = 42; 733 res = write(pipefd[1], &data, 1); 734 ASSERT_EQ(1, res); 735 736 pollfd fds[2]; 737 fds[0].fd = pipefd[0]; 738 fds[0].events = POLLIN; 739 fds[1].fd = pipefd[1]; 740 fds[1].events = POLLIN; 741 res = poll(fds, 2, 500); 742 ASSERT_EQ(1, res); 743 EXPECT_NOT_POISONED(fds[0].revents); 744 EXPECT_NOT_POISONED(fds[1].revents); 745 746 close(pipefd[0]); 747 close(pipefd[1]); 748} 749 750TEST(MemorySanitizer, ppoll) { 751 int* pipefd = new int[2]; 752 int res = pipe(pipefd); 753 ASSERT_EQ(0, res); 754 755 char data = 42; 756 res = write(pipefd[1], &data, 1); 757 ASSERT_EQ(1, res); 758 759 pollfd fds[2]; 760 fds[0].fd = pipefd[0]; 761 fds[0].events = POLLIN; 762 fds[1].fd = pipefd[1]; 763 fds[1].events = POLLIN; 764 sigset_t ss; 765 sigemptyset(&ss); 766 res = ppoll(fds, 2, NULL, &ss); 767 ASSERT_EQ(1, res); 768 EXPECT_NOT_POISONED(fds[0].revents); 769 EXPECT_NOT_POISONED(fds[1].revents); 770 771 close(pipefd[0]); 772 close(pipefd[1]); 773} 774 775TEST(MemorySanitizer, poll_positive) { 776 int* pipefd = new int[2]; 777 int res = pipe(pipefd); 778 ASSERT_EQ(0, res); 779 780 pollfd fds[2]; 781 fds[0].fd = pipefd[0]; 782 fds[0].events = POLLIN; 783 // fds[1].fd uninitialized 784 fds[1].events = POLLIN; 785 EXPECT_UMR(poll(fds, 2, 0)); 786 787 close(pipefd[0]); 788 close(pipefd[1]); 789} 790 791TEST(MemorySanitizer, bind_getsockname) { 792 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 793 794 struct sockaddr_in sai; 795 memset(&sai, 0, sizeof(sai)); 796 sai.sin_family = AF_UNIX; 797 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 798 799 assert(!res); 800 char buf[200]; 801 socklen_t addrlen; 802 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 803 804 addrlen = sizeof(buf); 805 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 806 EXPECT_NOT_POISONED(addrlen); 807 EXPECT_NOT_POISONED(buf[0]); 808 EXPECT_NOT_POISONED(buf[addrlen - 1]); 809 EXPECT_POISONED(buf[addrlen]); 810 close(sock); 811} 812 813TEST(MemorySanitizer, accept) { 814 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 815 ASSERT_LT(0, listen_socket); 816 817 struct sockaddr_in sai; 818 sai.sin_family = AF_INET; 819 sai.sin_port = 0; 820 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 821 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 822 ASSERT_EQ(0, res); 823 824 res = listen(listen_socket, 1); 825 ASSERT_EQ(0, res); 826 827 socklen_t sz = sizeof(sai); 828 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 829 ASSERT_EQ(0, res); 830 ASSERT_EQ(sizeof(sai), sz); 831 832 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 833 ASSERT_LT(0, connect_socket); 834 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 835 ASSERT_EQ(0, res); 836 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 837 ASSERT_EQ(-1, res); 838 ASSERT_EQ(EINPROGRESS, errno); 839 840 __msan_poison(&sai, sizeof(sai)); 841 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 842 ASSERT_LT(0, new_sock); 843 ASSERT_EQ(sizeof(sai), sz); 844 EXPECT_NOT_POISONED(sai); 845 846 __msan_poison(&sai, sizeof(sai)); 847 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 848 ASSERT_EQ(0, res); 849 ASSERT_EQ(sizeof(sai), sz); 850 EXPECT_NOT_POISONED(sai); 851 852 close(new_sock); 853 close(connect_socket); 854 close(listen_socket); 855} 856 857TEST(MemorySanitizer, getaddrinfo) { 858 struct addrinfo *ai; 859 struct addrinfo hints; 860 memset(&hints, 0, sizeof(hints)); 861 hints.ai_family = AF_INET; 862 int res = getaddrinfo("localhost", NULL, &hints, &ai); 863 ASSERT_EQ(0, res); 864 EXPECT_NOT_POISONED(*ai); 865 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 866 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 867} 868 869TEST(MemorySanitizer, getnameinfo) { 870 struct sockaddr_in sai; 871 sai.sin_family = AF_INET; 872 sai.sin_port = 80; 873 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 874 char host[500]; 875 char serv[500]; 876 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 877 sizeof(host), serv, sizeof(serv), 0); 878 ASSERT_EQ(0, res); 879 EXPECT_NOT_POISONED(host[0]); 880 EXPECT_POISONED(host[sizeof(host) - 1]); 881 882 ASSERT_NE(0, strlen(host)); 883 EXPECT_NOT_POISONED(serv[0]); 884 EXPECT_POISONED(serv[sizeof(serv) - 1]); 885 ASSERT_NE(0, strlen(serv)); 886} 887 888#define EXPECT_HOSTENT_NOT_POISONED(he) \ 889 do { \ 890 EXPECT_NOT_POISONED(*(he)); \ 891 ASSERT_NE((void *) 0, (he)->h_name); \ 892 ASSERT_NE((void *) 0, (he)->h_aliases); \ 893 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 894 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 895 char **p = (he)->h_aliases; \ 896 while (*p) { \ 897 EXPECT_NOT_POISONED(strlen(*p)); \ 898 ++p; \ 899 } \ 900 char **q = (he)->h_addr_list; \ 901 while (*q) { \ 902 EXPECT_NOT_POISONED(*q[0]); \ 903 ++q; \ 904 } \ 905 EXPECT_NOT_POISONED(*q); \ 906 } while (0) 907 908TEST(MemorySanitizer, gethostent) { 909 struct hostent *he = gethostent(); 910 ASSERT_NE((void *)NULL, he); 911 EXPECT_HOSTENT_NOT_POISONED(he); 912} 913 914#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 915 916TEST(MemorySanitizer, gethostbyname) { 917 struct hostent *he = gethostbyname("localhost"); 918 ASSERT_NE((void *)NULL, he); 919 EXPECT_HOSTENT_NOT_POISONED(he); 920} 921 922#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 923 924TEST(MemorySanitizer, gethostbyname2) { 925 struct hostent *he = gethostbyname2("localhost", AF_INET); 926 ASSERT_NE((void *)NULL, he); 927 EXPECT_HOSTENT_NOT_POISONED(he); 928} 929 930TEST(MemorySanitizer, gethostbyaddr) { 931 in_addr_t addr = inet_addr("127.0.0.1"); 932 EXPECT_NOT_POISONED(addr); 933 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 934 ASSERT_NE((void *)NULL, he); 935 EXPECT_HOSTENT_NOT_POISONED(he); 936} 937 938TEST(MemorySanitizer, gethostent_r) { 939 char buf[2000]; 940 struct hostent he; 941 struct hostent *result; 942 int err; 943 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 944 ASSERT_EQ(0, res); 945 EXPECT_NOT_POISONED(result); 946 ASSERT_NE((void *)NULL, result); 947 EXPECT_HOSTENT_NOT_POISONED(result); 948 EXPECT_NOT_POISONED(err); 949} 950 951TEST(MemorySanitizer, gethostbyname_r) { 952 char buf[2000]; 953 struct hostent he; 954 struct hostent *result; 955 int err; 956 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 957 ASSERT_EQ(0, res); 958 EXPECT_NOT_POISONED(result); 959 ASSERT_NE((void *)NULL, result); 960 EXPECT_HOSTENT_NOT_POISONED(result); 961 EXPECT_NOT_POISONED(err); 962} 963 964TEST(MemorySanitizer, gethostbyname2_r) { 965 char buf[2000]; 966 struct hostent he; 967 struct hostent *result; 968 int err; 969 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 970 &result, &err); 971 ASSERT_EQ(0, res); 972 EXPECT_NOT_POISONED(result); 973 ASSERT_NE((void *)NULL, result); 974 EXPECT_HOSTENT_NOT_POISONED(result); 975 EXPECT_NOT_POISONED(err); 976} 977 978TEST(MemorySanitizer, gethostbyaddr_r) { 979 char buf[2000]; 980 struct hostent he; 981 struct hostent *result; 982 int err; 983 in_addr_t addr = inet_addr("127.0.0.1"); 984 EXPECT_NOT_POISONED(addr); 985 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 986 &result, &err); 987 ASSERT_EQ(0, res); 988 EXPECT_NOT_POISONED(result); 989 ASSERT_NE((void *)NULL, result); 990 EXPECT_HOSTENT_NOT_POISONED(result); 991 EXPECT_NOT_POISONED(err); 992} 993 994TEST(MemorySanitizer, getsockopt) { 995 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 996 struct linger l[2]; 997 socklen_t sz = sizeof(l[0]); 998 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 999 ASSERT_EQ(0, res); 1000 ASSERT_EQ(sizeof(l[0]), sz); 1001 EXPECT_NOT_POISONED(l[0]); 1002 EXPECT_POISONED(*(char *)(l + 1)); 1003} 1004 1005TEST(MemorySanitizer, getcwd) { 1006 char path[PATH_MAX + 1]; 1007 char* res = getcwd(path, sizeof(path)); 1008 assert(res); 1009 EXPECT_NOT_POISONED(path[0]); 1010} 1011 1012TEST(MemorySanitizer, getcwd_gnu) { 1013 char* res = getcwd(NULL, 0); 1014 assert(res); 1015 EXPECT_NOT_POISONED(res[0]); 1016 free(res); 1017} 1018 1019TEST(MemorySanitizer, get_current_dir_name) { 1020 char* res = get_current_dir_name(); 1021 assert(res); 1022 EXPECT_NOT_POISONED(res[0]); 1023 free(res); 1024} 1025 1026TEST(MemorySanitizer, confstr) { 1027 char buf[3]; 1028 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1029 ASSERT_GT(res, sizeof(buf)); 1030 EXPECT_NOT_POISONED(buf[0]); 1031 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1032 1033 char buf2[1000]; 1034 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1035 ASSERT_LT(res, sizeof(buf2)); 1036 EXPECT_NOT_POISONED(buf2[0]); 1037 EXPECT_NOT_POISONED(buf2[res - 1]); 1038 EXPECT_POISONED(buf2[res]); 1039 ASSERT_EQ(res, strlen(buf2) + 1); 1040} 1041 1042TEST(MemorySanitizer, readdir) { 1043 DIR *dir = opendir("."); 1044 struct dirent *d = readdir(dir); 1045 assert(d); 1046 EXPECT_NOT_POISONED(d->d_name[0]); 1047 closedir(dir); 1048} 1049 1050TEST(MemorySanitizer, readdir_r) { 1051 DIR *dir = opendir("."); 1052 struct dirent d; 1053 struct dirent *pd; 1054 int res = readdir_r(dir, &d, &pd); 1055 assert(!res); 1056 EXPECT_NOT_POISONED(pd); 1057 EXPECT_NOT_POISONED(d.d_name[0]); 1058 closedir(dir); 1059} 1060 1061TEST(MemorySanitizer, realpath) { 1062 const char* relpath = "."; 1063 char path[PATH_MAX + 1]; 1064 char* res = realpath(relpath, path); 1065 assert(res); 1066 EXPECT_NOT_POISONED(path[0]); 1067} 1068 1069TEST(MemorySanitizer, realpath_null) { 1070 const char* relpath = "."; 1071 char* res = realpath(relpath, NULL); 1072 printf("%d, %s\n", errno, strerror(errno)); 1073 assert(res); 1074 EXPECT_NOT_POISONED(res[0]); 1075 free(res); 1076} 1077 1078TEST(MemorySanitizer, canonicalize_file_name) { 1079 const char* relpath = "."; 1080 char* res = canonicalize_file_name(relpath); 1081 assert(res); 1082 EXPECT_NOT_POISONED(res[0]); 1083 free(res); 1084} 1085 1086extern char **environ; 1087 1088TEST(MemorySanitizer, setenv) { 1089 setenv("AAA", "BBB", 1); 1090 for (char **envp = environ; *envp; ++envp) { 1091 EXPECT_NOT_POISONED(*envp); 1092 EXPECT_NOT_POISONED(*envp[0]); 1093 } 1094} 1095 1096TEST(MemorySanitizer, putenv) { 1097 char s[] = "AAA=BBB"; 1098 putenv(s); 1099 for (char **envp = environ; *envp; ++envp) { 1100 EXPECT_NOT_POISONED(*envp); 1101 EXPECT_NOT_POISONED(*envp[0]); 1102 } 1103} 1104 1105TEST(MemorySanitizer, memcpy) { 1106 char* x = new char[2]; 1107 char* y = new char[2]; 1108 x[0] = 1; 1109 x[1] = *GetPoisoned<char>(); 1110 memcpy(y, x, 2); 1111 EXPECT_NOT_POISONED(y[0]); 1112 EXPECT_POISONED(y[1]); 1113} 1114 1115TEST(MemorySanitizer, memmove) { 1116 char* x = new char[2]; 1117 char* y = new char[2]; 1118 x[0] = 1; 1119 x[1] = *GetPoisoned<char>(); 1120 memmove(y, x, 2); 1121 EXPECT_NOT_POISONED(y[0]); 1122 EXPECT_POISONED(y[1]); 1123} 1124 1125TEST(MemorySanitizer, bcopy) { 1126 char* x = new char[2]; 1127 char* y = new char[2]; 1128 x[0] = 1; 1129 x[1] = *GetPoisoned<char>(); 1130 bcopy(x, y, 2); 1131 EXPECT_NOT_POISONED(y[0]); 1132 EXPECT_POISONED(y[1]); 1133} 1134 1135TEST(MemorySanitizer, strdup) { 1136 char buf[4] = "abc"; 1137 __msan_poison(buf + 2, sizeof(*buf)); 1138 char *x = strdup(buf); 1139 EXPECT_NOT_POISONED(x[0]); 1140 EXPECT_NOT_POISONED(x[1]); 1141 EXPECT_POISONED(x[2]); 1142 EXPECT_NOT_POISONED(x[3]); 1143 free(x); 1144} 1145 1146TEST(MemorySanitizer, strndup) { 1147 char buf[4] = "abc"; 1148 __msan_poison(buf + 2, sizeof(*buf)); 1149 char *x = strndup(buf, 3); 1150 EXPECT_NOT_POISONED(x[0]); 1151 EXPECT_NOT_POISONED(x[1]); 1152 EXPECT_POISONED(x[2]); 1153 EXPECT_NOT_POISONED(x[3]); 1154 free(x); 1155} 1156 1157TEST(MemorySanitizer, strndup_short) { 1158 char buf[4] = "abc"; 1159 __msan_poison(buf + 1, sizeof(*buf)); 1160 __msan_poison(buf + 2, sizeof(*buf)); 1161 char *x = strndup(buf, 2); 1162 EXPECT_NOT_POISONED(x[0]); 1163 EXPECT_POISONED(x[1]); 1164 EXPECT_NOT_POISONED(x[2]); 1165 free(x); 1166} 1167 1168 1169template<class T, int size> 1170void TestOverlapMemmove() { 1171 T *x = new T[size]; 1172 assert(size >= 3); 1173 x[2] = 0; 1174 memmove(x, x + 1, (size - 1) * sizeof(T)); 1175 EXPECT_NOT_POISONED(x[1]); 1176 if (!__msan_has_dynamic_component()) { 1177 // FIXME: under DR we will lose this information 1178 // because accesses in memmove will unpoisin the shadow. 1179 // We need to use our own memove implementation instead of libc's. 1180 EXPECT_POISONED(x[0]); 1181 EXPECT_POISONED(x[2]); 1182 } 1183 delete [] x; 1184} 1185 1186TEST(MemorySanitizer, overlap_memmove) { 1187 TestOverlapMemmove<U1, 10>(); 1188 TestOverlapMemmove<U1, 1000>(); 1189 TestOverlapMemmove<U8, 4>(); 1190 TestOverlapMemmove<U8, 1000>(); 1191} 1192 1193TEST(MemorySanitizer, strcpy) { // NOLINT 1194 char* x = new char[3]; 1195 char* y = new char[3]; 1196 x[0] = 'a'; 1197 x[1] = *GetPoisoned<char>(1, 1); 1198 x[2] = 0; 1199 strcpy(y, x); // NOLINT 1200 EXPECT_NOT_POISONED(y[0]); 1201 EXPECT_POISONED(y[1]); 1202 EXPECT_NOT_POISONED(y[2]); 1203} 1204 1205TEST(MemorySanitizer, strncpy) { // NOLINT 1206 char* x = new char[3]; 1207 char* y = new char[3]; 1208 x[0] = 'a'; 1209 x[1] = *GetPoisoned<char>(1, 1); 1210 x[2] = 0; 1211 strncpy(y, x, 2); // NOLINT 1212 EXPECT_NOT_POISONED(y[0]); 1213 EXPECT_POISONED(y[1]); 1214 EXPECT_POISONED(y[2]); 1215} 1216 1217TEST(MemorySanitizer, stpcpy) { // NOLINT 1218 char* x = new char[3]; 1219 char* y = new char[3]; 1220 x[0] = 'a'; 1221 x[1] = *GetPoisoned<char>(1, 1); 1222 x[2] = 0; 1223 char *res = stpcpy(y, x); // NOLINT 1224 ASSERT_EQ(res, y + 2); 1225 EXPECT_NOT_POISONED(y[0]); 1226 EXPECT_POISONED(y[1]); 1227 EXPECT_NOT_POISONED(y[2]); 1228} 1229 1230TEST(MemorySanitizer, strtol) { 1231 char *e; 1232 assert(1 == strtol("1", &e, 10)); 1233 EXPECT_NOT_POISONED((S8) e); 1234} 1235 1236TEST(MemorySanitizer, strtoll) { 1237 char *e; 1238 assert(1 == strtoll("1", &e, 10)); 1239 EXPECT_NOT_POISONED((S8) e); 1240} 1241 1242TEST(MemorySanitizer, strtoul) { 1243 char *e; 1244 assert(1 == strtoul("1", &e, 10)); 1245 EXPECT_NOT_POISONED((S8) e); 1246} 1247 1248TEST(MemorySanitizer, strtoull) { 1249 char *e; 1250 assert(1 == strtoull("1", &e, 10)); 1251 EXPECT_NOT_POISONED((S8) e); 1252} 1253 1254TEST(MemorySanitizer, strtoimax) { 1255 char *e; 1256 assert(1 == strtoimax("1", &e, 10)); 1257 EXPECT_NOT_POISONED((S8) e); 1258} 1259 1260TEST(MemorySanitizer, strtoumax) { 1261 char *e; 1262 assert(1 == strtoumax("1", &e, 10)); 1263 EXPECT_NOT_POISONED((S8) e); 1264} 1265 1266TEST(MemorySanitizer, strtod) { 1267 char *e; 1268 assert(0 != strtod("1.5", &e)); 1269 EXPECT_NOT_POISONED((S8) e); 1270} 1271 1272TEST(MemorySanitizer, strtof) { 1273 char *e; 1274 assert(0 != strtof("1.5", &e)); 1275 EXPECT_NOT_POISONED((S8) e); 1276} 1277 1278TEST(MemorySanitizer, strtold) { 1279 char *e; 1280 assert(0 != strtold("1.5", &e)); 1281 EXPECT_NOT_POISONED((S8) e); 1282} 1283 1284TEST(MemorySanitizer, modf) { 1285 double x, y; 1286 x = modf(2.1, &y); 1287 EXPECT_NOT_POISONED(y); 1288} 1289 1290TEST(MemorySanitizer, modff) { 1291 float x, y; 1292 x = modff(2.1, &y); 1293 EXPECT_NOT_POISONED(y); 1294} 1295 1296TEST(MemorySanitizer, modfl) { 1297 long double x, y; 1298 x = modfl(2.1, &y); 1299 EXPECT_NOT_POISONED(y); 1300} 1301 1302TEST(MemorySanitizer, sprintf) { // NOLINT 1303 char buff[10]; 1304 break_optimization(buff); 1305 EXPECT_POISONED(buff[0]); 1306 int res = sprintf(buff, "%d", 1234567); // NOLINT 1307 assert(res == 7); 1308 assert(buff[0] == '1'); 1309 assert(buff[1] == '2'); 1310 assert(buff[2] == '3'); 1311 assert(buff[6] == '7'); 1312 assert(buff[7] == 0); 1313 EXPECT_POISONED(buff[8]); 1314} 1315 1316TEST(MemorySanitizer, snprintf) { 1317 char buff[10]; 1318 break_optimization(buff); 1319 EXPECT_POISONED(buff[0]); 1320 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1321 assert(res == 7); 1322 assert(buff[0] == '1'); 1323 assert(buff[1] == '2'); 1324 assert(buff[2] == '3'); 1325 assert(buff[6] == '7'); 1326 assert(buff[7] == 0); 1327 EXPECT_POISONED(buff[8]); 1328} 1329 1330TEST(MemorySanitizer, swprintf) { 1331 wchar_t buff[10]; 1332 assert(sizeof(wchar_t) == 4); 1333 break_optimization(buff); 1334 EXPECT_POISONED(buff[0]); 1335 int res = swprintf(buff, 9, L"%d", 1234567); 1336 assert(res == 7); 1337 assert(buff[0] == '1'); 1338 assert(buff[1] == '2'); 1339 assert(buff[2] == '3'); 1340 assert(buff[6] == '7'); 1341 assert(buff[7] == 0); 1342 EXPECT_POISONED(buff[8]); 1343} 1344 1345TEST(MemorySanitizer, asprintf) { // NOLINT 1346 char *pbuf; 1347 EXPECT_POISONED(pbuf); 1348 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1349 assert(res == 7); 1350 EXPECT_NOT_POISONED(pbuf); 1351 assert(pbuf[0] == '1'); 1352 assert(pbuf[1] == '2'); 1353 assert(pbuf[2] == '3'); 1354 assert(pbuf[6] == '7'); 1355 assert(pbuf[7] == 0); 1356 free(pbuf); 1357} 1358 1359TEST(MemorySanitizer, mbstowcs) { 1360 const char *x = "abc"; 1361 wchar_t buff[10]; 1362 int res = mbstowcs(buff, x, 2); 1363 EXPECT_EQ(2, res); 1364 EXPECT_EQ(L'a', buff[0]); 1365 EXPECT_EQ(L'b', buff[1]); 1366 EXPECT_POISONED(buff[2]); 1367 res = mbstowcs(buff, x, 10); 1368 EXPECT_EQ(3, res); 1369 EXPECT_NOT_POISONED(buff[3]); 1370} 1371 1372TEST(MemorySanitizer, wcstombs) { 1373 const wchar_t *x = L"abc"; 1374 char buff[10]; 1375 int res = wcstombs(buff, x, 4); 1376 EXPECT_EQ(res, 3); 1377 EXPECT_EQ(buff[0], 'a'); 1378 EXPECT_EQ(buff[1], 'b'); 1379 EXPECT_EQ(buff[2], 'c'); 1380} 1381 1382TEST(MemorySanitizer, wcsrtombs) { 1383 const wchar_t *x = L"abc"; 1384 const wchar_t *p = x; 1385 char buff[10]; 1386 mbstate_t mbs; 1387 memset(&mbs, 0, sizeof(mbs)); 1388 int res = wcsrtombs(buff, &p, 4, &mbs); 1389 EXPECT_EQ(res, 3); 1390 EXPECT_EQ(buff[0], 'a'); 1391 EXPECT_EQ(buff[1], 'b'); 1392 EXPECT_EQ(buff[2], 'c'); 1393 EXPECT_EQ(buff[3], '\0'); 1394 EXPECT_POISONED(buff[4]); 1395} 1396 1397TEST(MemorySanitizer, wcsnrtombs) { 1398 const wchar_t *x = L"abc"; 1399 const wchar_t *p = x; 1400 char buff[10]; 1401 mbstate_t mbs; 1402 memset(&mbs, 0, sizeof(mbs)); 1403 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1404 EXPECT_EQ(res, 2); 1405 EXPECT_EQ(buff[0], 'a'); 1406 EXPECT_EQ(buff[1], 'b'); 1407 EXPECT_POISONED(buff[2]); 1408} 1409 1410TEST(MemorySanitizer, mbtowc) { 1411 const char *x = "abc"; 1412 wchar_t wx; 1413 int res = mbtowc(&wx, x, 3); 1414 EXPECT_GT(res, 0); 1415 EXPECT_NOT_POISONED(wx); 1416} 1417 1418TEST(MemorySanitizer, mbrtowc) { 1419 const char *x = "abc"; 1420 wchar_t wx; 1421 mbstate_t mbs; 1422 memset(&mbs, 0, sizeof(mbs)); 1423 int res = mbrtowc(&wx, x, 3, &mbs); 1424 EXPECT_GT(res, 0); 1425 EXPECT_NOT_POISONED(wx); 1426} 1427 1428TEST(MemorySanitizer, gettimeofday) { 1429 struct timeval tv; 1430 struct timezone tz; 1431 break_optimization(&tv); 1432 break_optimization(&tz); 1433 assert(sizeof(tv) == 16); 1434 assert(sizeof(tz) == 8); 1435 EXPECT_POISONED(tv.tv_sec); 1436 EXPECT_POISONED(tv.tv_usec); 1437 EXPECT_POISONED(tz.tz_minuteswest); 1438 EXPECT_POISONED(tz.tz_dsttime); 1439 assert(0 == gettimeofday(&tv, &tz)); 1440 EXPECT_NOT_POISONED(tv.tv_sec); 1441 EXPECT_NOT_POISONED(tv.tv_usec); 1442 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1443 EXPECT_NOT_POISONED(tz.tz_dsttime); 1444} 1445 1446TEST(MemorySanitizer, clock_gettime) { 1447 struct timespec tp; 1448 EXPECT_POISONED(tp.tv_sec); 1449 EXPECT_POISONED(tp.tv_nsec); 1450 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1451 EXPECT_NOT_POISONED(tp.tv_sec); 1452 EXPECT_NOT_POISONED(tp.tv_nsec); 1453} 1454 1455TEST(MemorySanitizer, clock_getres) { 1456 struct timespec tp; 1457 EXPECT_POISONED(tp.tv_sec); 1458 EXPECT_POISONED(tp.tv_nsec); 1459 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1460 EXPECT_POISONED(tp.tv_sec); 1461 EXPECT_POISONED(tp.tv_nsec); 1462 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1463 EXPECT_NOT_POISONED(tp.tv_sec); 1464 EXPECT_NOT_POISONED(tp.tv_nsec); 1465} 1466 1467TEST(MemorySanitizer, getitimer) { 1468 struct itimerval it1, it2; 1469 int res; 1470 EXPECT_POISONED(it1.it_interval.tv_sec); 1471 EXPECT_POISONED(it1.it_interval.tv_usec); 1472 EXPECT_POISONED(it1.it_value.tv_sec); 1473 EXPECT_POISONED(it1.it_value.tv_usec); 1474 res = getitimer(ITIMER_VIRTUAL, &it1); 1475 assert(!res); 1476 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1477 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1478 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1479 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1480 1481 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1482 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1483 1484 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1485 assert(!res); 1486 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1487 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1488 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1489 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1490 1491 // Check that old_value can be 0, and disable the timer. 1492 memset(&it1, 0, sizeof(it1)); 1493 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1494 assert(!res); 1495} 1496 1497TEST(MemorySanitizer, setitimer_null) { 1498 setitimer(ITIMER_VIRTUAL, 0, 0); 1499 // Not testing the return value, since it the behaviour seems to differ 1500 // between libc implementations and POSIX. 1501 // Should never crash, though. 1502} 1503 1504TEST(MemorySanitizer, time) { 1505 time_t t; 1506 EXPECT_POISONED(t); 1507 time_t t2 = time(&t); 1508 assert(t2 != (time_t)-1); 1509 EXPECT_NOT_POISONED(t); 1510} 1511 1512TEST(MemorySanitizer, localtime) { 1513 time_t t = 123; 1514 struct tm *time = localtime(&t); 1515 assert(time != 0); 1516 EXPECT_NOT_POISONED(time->tm_sec); 1517 EXPECT_NOT_POISONED(time->tm_hour); 1518 EXPECT_NOT_POISONED(time->tm_year); 1519 EXPECT_NOT_POISONED(time->tm_isdst); 1520 EXPECT_NE(0, strlen(time->tm_zone)); 1521} 1522 1523TEST(MemorySanitizer, localtime_r) { 1524 time_t t = 123; 1525 struct tm time; 1526 struct tm *res = localtime_r(&t, &time); 1527 assert(res != 0); 1528 EXPECT_NOT_POISONED(time.tm_sec); 1529 EXPECT_NOT_POISONED(time.tm_hour); 1530 EXPECT_NOT_POISONED(time.tm_year); 1531 EXPECT_NOT_POISONED(time.tm_isdst); 1532 EXPECT_NE(0, strlen(time.tm_zone)); 1533} 1534 1535TEST(MemorySanitizer, mmap) { 1536 const int size = 4096; 1537 void *p1, *p2; 1538 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1539 __msan_poison(p1, size); 1540 munmap(p1, size); 1541 for (int i = 0; i < 1000; i++) { 1542 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1543 if (p2 == p1) 1544 break; 1545 else 1546 munmap(p2, size); 1547 } 1548 if (p1 == p2) { 1549 EXPECT_NOT_POISONED(*(char*)p2); 1550 munmap(p2, size); 1551 } 1552} 1553 1554// FIXME: enable and add ecvt. 1555// FIXME: check why msandr does nt handle fcvt. 1556TEST(MemorySanitizer, fcvt) { 1557 int a, b; 1558 break_optimization(&a); 1559 break_optimization(&b); 1560 EXPECT_POISONED(a); 1561 EXPECT_POISONED(b); 1562 char *str = fcvt(12345.6789, 10, &a, &b); 1563 EXPECT_NOT_POISONED(a); 1564 EXPECT_NOT_POISONED(b); 1565} 1566 1567TEST(MemorySanitizer, frexp) { 1568 int x; 1569 x = *GetPoisoned<int>(); 1570 double r = frexp(1.1, &x); 1571 EXPECT_NOT_POISONED(r); 1572 EXPECT_NOT_POISONED(x); 1573 1574 x = *GetPoisoned<int>(); 1575 float rf = frexpf(1.1, &x); 1576 EXPECT_NOT_POISONED(rf); 1577 EXPECT_NOT_POISONED(x); 1578 1579 x = *GetPoisoned<int>(); 1580 double rl = frexpl(1.1, &x); 1581 EXPECT_NOT_POISONED(rl); 1582 EXPECT_NOT_POISONED(x); 1583} 1584 1585namespace { 1586 1587static int cnt; 1588 1589void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1590 assert(signo == SIGPROF); 1591 assert(si); 1592 EXPECT_NOT_POISONED(si->si_errno); 1593 EXPECT_NOT_POISONED(si->si_pid); 1594#if __linux__ 1595# if defined(__x86_64__) 1596 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1597# elif defined(__i386__) 1598 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1599# endif 1600#endif 1601 ++cnt; 1602} 1603 1604TEST(MemorySanitizer, sigaction) { 1605 struct sigaction act = {}; 1606 struct sigaction oldact = {}; 1607 struct sigaction origact = {}; 1608 1609 sigaction(SIGPROF, 0, &origact); 1610 1611 act.sa_flags |= SA_SIGINFO; 1612 act.sa_sigaction = &SigactionHandler; 1613 sigaction(SIGPROF, &act, 0); 1614 1615 kill(getpid(), SIGPROF); 1616 1617 act.sa_flags &= ~SA_SIGINFO; 1618 act.sa_handler = SIG_DFL; 1619 sigaction(SIGPROF, &act, 0); 1620 1621 act.sa_flags &= ~SA_SIGINFO; 1622 act.sa_handler = SIG_IGN; 1623 sigaction(SIGPROF, &act, &oldact); 1624 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1625 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1626 kill(getpid(), SIGPROF); 1627 1628 act.sa_flags |= SA_SIGINFO; 1629 act.sa_sigaction = &SigactionHandler; 1630 sigaction(SIGPROF, &act, &oldact); 1631 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1632 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1633 kill(getpid(), SIGPROF); 1634 1635 act.sa_flags &= ~SA_SIGINFO; 1636 act.sa_handler = SIG_DFL; 1637 sigaction(SIGPROF, &act, &oldact); 1638 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1639 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1640 EXPECT_EQ(2, cnt); 1641 1642 sigaction(SIGPROF, &origact, 0); 1643} 1644 1645} // namespace 1646 1647 1648TEST(MemorySanitizer, sigemptyset) { 1649 sigset_t s; 1650 EXPECT_POISONED(s); 1651 int res = sigemptyset(&s); 1652 ASSERT_EQ(0, res); 1653 EXPECT_NOT_POISONED(s); 1654} 1655 1656TEST(MemorySanitizer, sigfillset) { 1657 sigset_t s; 1658 EXPECT_POISONED(s); 1659 int res = sigfillset(&s); 1660 ASSERT_EQ(0, res); 1661 EXPECT_NOT_POISONED(s); 1662} 1663 1664TEST(MemorySanitizer, sigpending) { 1665 sigset_t s; 1666 EXPECT_POISONED(s); 1667 int res = sigpending(&s); 1668 ASSERT_EQ(0, res); 1669 EXPECT_NOT_POISONED(s); 1670} 1671 1672TEST(MemorySanitizer, sigprocmask) { 1673 sigset_t s; 1674 EXPECT_POISONED(s); 1675 int res = sigprocmask(SIG_BLOCK, 0, &s); 1676 ASSERT_EQ(0, res); 1677 EXPECT_NOT_POISONED(s); 1678} 1679 1680struct StructWithDtor { 1681 ~StructWithDtor(); 1682}; 1683 1684NOINLINE StructWithDtor::~StructWithDtor() { 1685 break_optimization(0); 1686} 1687 1688TEST(MemorySanitizer, Invoke) { 1689 StructWithDtor s; // Will cause the calls to become invokes. 1690 EXPECT_NOT_POISONED(0); 1691 EXPECT_POISONED(*GetPoisoned<int>()); 1692 EXPECT_NOT_POISONED(0); 1693 EXPECT_POISONED(*GetPoisoned<int>()); 1694 EXPECT_POISONED(ReturnPoisoned<S4>()); 1695} 1696 1697TEST(MemorySanitizer, ptrtoint) { 1698 // Test that shadow is propagated through pointer-to-integer conversion. 1699 void* p = (void*)0xABCD; 1700 __msan_poison(((char*)&p) + 1, sizeof(p)); 1701 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1702 1703 void* q = (void*)0xABCD; 1704 __msan_poison(&q, sizeof(q) - 1); 1705 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1706} 1707 1708static void vaargsfn2(int guard, ...) { 1709 va_list vl; 1710 va_start(vl, guard); 1711 EXPECT_NOT_POISONED(va_arg(vl, int)); 1712 EXPECT_NOT_POISONED(va_arg(vl, int)); 1713 EXPECT_NOT_POISONED(va_arg(vl, int)); 1714 EXPECT_POISONED(va_arg(vl, double)); 1715 va_end(vl); 1716} 1717 1718static void vaargsfn(int guard, ...) { 1719 va_list vl; 1720 va_start(vl, guard); 1721 EXPECT_NOT_POISONED(va_arg(vl, int)); 1722 EXPECT_POISONED(va_arg(vl, int)); 1723 // The following call will overwrite __msan_param_tls. 1724 // Checks after it test that arg shadow was somehow saved across the call. 1725 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1726 EXPECT_NOT_POISONED(va_arg(vl, int)); 1727 EXPECT_POISONED(va_arg(vl, int)); 1728 va_end(vl); 1729} 1730 1731TEST(MemorySanitizer, VAArgTest) { 1732 int* x = GetPoisoned<int>(); 1733 int* y = GetPoisoned<int>(4); 1734 vaargsfn(1, 13, *x, 42, *y); 1735} 1736 1737static void vaargsfn_many(int guard, ...) { 1738 va_list vl; 1739 va_start(vl, guard); 1740 EXPECT_NOT_POISONED(va_arg(vl, int)); 1741 EXPECT_POISONED(va_arg(vl, int)); 1742 EXPECT_NOT_POISONED(va_arg(vl, int)); 1743 EXPECT_NOT_POISONED(va_arg(vl, int)); 1744 EXPECT_NOT_POISONED(va_arg(vl, int)); 1745 EXPECT_NOT_POISONED(va_arg(vl, int)); 1746 EXPECT_NOT_POISONED(va_arg(vl, int)); 1747 EXPECT_NOT_POISONED(va_arg(vl, int)); 1748 EXPECT_NOT_POISONED(va_arg(vl, int)); 1749 EXPECT_POISONED(va_arg(vl, int)); 1750 va_end(vl); 1751} 1752 1753TEST(MemorySanitizer, VAArgManyTest) { 1754 int* x = GetPoisoned<int>(); 1755 int* y = GetPoisoned<int>(4); 1756 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1757} 1758 1759static void vaargsfn_pass2(va_list vl) { 1760 EXPECT_NOT_POISONED(va_arg(vl, int)); 1761 EXPECT_NOT_POISONED(va_arg(vl, int)); 1762 EXPECT_POISONED(va_arg(vl, int)); 1763} 1764 1765static void vaargsfn_pass(int guard, ...) { 1766 va_list vl; 1767 va_start(vl, guard); 1768 EXPECT_POISONED(va_arg(vl, int)); 1769 vaargsfn_pass2(vl); 1770 va_end(vl); 1771} 1772 1773TEST(MemorySanitizer, VAArgPass) { 1774 int* x = GetPoisoned<int>(); 1775 int* y = GetPoisoned<int>(4); 1776 vaargsfn_pass(1, *x, 2, 3, *y); 1777} 1778 1779static void vaargsfn_copy2(va_list vl) { 1780 EXPECT_NOT_POISONED(va_arg(vl, int)); 1781 EXPECT_POISONED(va_arg(vl, int)); 1782} 1783 1784static void vaargsfn_copy(int guard, ...) { 1785 va_list vl; 1786 va_start(vl, guard); 1787 EXPECT_NOT_POISONED(va_arg(vl, int)); 1788 EXPECT_POISONED(va_arg(vl, int)); 1789 va_list vl2; 1790 va_copy(vl2, vl); 1791 vaargsfn_copy2(vl2); 1792 EXPECT_NOT_POISONED(va_arg(vl, int)); 1793 EXPECT_POISONED(va_arg(vl, int)); 1794 va_end(vl); 1795} 1796 1797TEST(MemorySanitizer, VAArgCopy) { 1798 int* x = GetPoisoned<int>(); 1799 int* y = GetPoisoned<int>(4); 1800 vaargsfn_copy(1, 2, *x, 3, *y); 1801} 1802 1803static void vaargsfn_ptr(int guard, ...) { 1804 va_list vl; 1805 va_start(vl, guard); 1806 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1807 EXPECT_POISONED(va_arg(vl, int*)); 1808 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1809 EXPECT_POISONED(va_arg(vl, double*)); 1810 va_end(vl); 1811} 1812 1813TEST(MemorySanitizer, VAArgPtr) { 1814 int** x = GetPoisoned<int*>(); 1815 double** y = GetPoisoned<double*>(8); 1816 int z; 1817 vaargsfn_ptr(1, &z, *x, &z, *y); 1818} 1819 1820static void vaargsfn_overflow(int guard, ...) { 1821 va_list vl; 1822 va_start(vl, guard); 1823 EXPECT_NOT_POISONED(va_arg(vl, int)); 1824 EXPECT_NOT_POISONED(va_arg(vl, int)); 1825 EXPECT_POISONED(va_arg(vl, int)); 1826 EXPECT_NOT_POISONED(va_arg(vl, int)); 1827 EXPECT_NOT_POISONED(va_arg(vl, int)); 1828 EXPECT_NOT_POISONED(va_arg(vl, int)); 1829 1830 EXPECT_NOT_POISONED(va_arg(vl, double)); 1831 EXPECT_NOT_POISONED(va_arg(vl, double)); 1832 EXPECT_NOT_POISONED(va_arg(vl, double)); 1833 EXPECT_POISONED(va_arg(vl, double)); 1834 EXPECT_NOT_POISONED(va_arg(vl, double)); 1835 EXPECT_POISONED(va_arg(vl, int*)); 1836 EXPECT_NOT_POISONED(va_arg(vl, double)); 1837 EXPECT_NOT_POISONED(va_arg(vl, double)); 1838 1839 EXPECT_POISONED(va_arg(vl, int)); 1840 EXPECT_POISONED(va_arg(vl, double)); 1841 EXPECT_POISONED(va_arg(vl, int*)); 1842 1843 EXPECT_NOT_POISONED(va_arg(vl, int)); 1844 EXPECT_NOT_POISONED(va_arg(vl, double)); 1845 EXPECT_NOT_POISONED(va_arg(vl, int*)); 1846 1847 EXPECT_POISONED(va_arg(vl, int)); 1848 EXPECT_POISONED(va_arg(vl, double)); 1849 EXPECT_POISONED(va_arg(vl, int*)); 1850 1851 va_end(vl); 1852} 1853 1854TEST(MemorySanitizer, VAArgOverflow) { 1855 int* x = GetPoisoned<int>(); 1856 double* y = GetPoisoned<double>(8); 1857 int** p = GetPoisoned<int*>(16); 1858 int z; 1859 vaargsfn_overflow(1, 1860 1, 2, *x, 4, 5, 6, 1861 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 1862 // the following args will overflow for sure 1863 *x, *y, *p, 1864 7, 9.9, &z, 1865 *x, *y, *p); 1866} 1867 1868static void vaargsfn_tlsoverwrite2(int guard, ...) { 1869 va_list vl; 1870 va_start(vl, guard); 1871 for (int i = 0; i < 20; ++i) 1872 EXPECT_NOT_POISONED(va_arg(vl, int)); 1873 va_end(vl); 1874} 1875 1876static void vaargsfn_tlsoverwrite(int guard, ...) { 1877 // This call will overwrite TLS contents unless it's backed up somewhere. 1878 vaargsfn_tlsoverwrite2(2, 1879 42, 42, 42, 42, 42, 1880 42, 42, 42, 42, 42, 1881 42, 42, 42, 42, 42, 1882 42, 42, 42, 42, 42); // 20x 1883 va_list vl; 1884 va_start(vl, guard); 1885 for (int i = 0; i < 20; ++i) 1886 EXPECT_POISONED(va_arg(vl, int)); 1887 va_end(vl); 1888} 1889 1890TEST(MemorySanitizer, VAArgTLSOverwrite) { 1891 int* x = GetPoisoned<int>(); 1892 vaargsfn_tlsoverwrite(1, 1893 *x, *x, *x, *x, *x, 1894 *x, *x, *x, *x, *x, 1895 *x, *x, *x, *x, *x, 1896 *x, *x, *x, *x, *x); // 20x 1897 1898} 1899 1900struct StructByVal { 1901 int a, b, c, d, e, f; 1902}; 1903 1904NOINLINE void StructByValTestFunc(struct StructByVal s) { 1905 EXPECT_NOT_POISONED(s.a); 1906 EXPECT_POISONED(s.b); 1907 EXPECT_NOT_POISONED(s.c); 1908 EXPECT_POISONED(s.d); 1909 EXPECT_NOT_POISONED(s.e); 1910 EXPECT_POISONED(s.f); 1911} 1912 1913NOINLINE void StructByValTestFunc1(struct StructByVal s) { 1914 StructByValTestFunc(s); 1915} 1916 1917NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 1918 StructByValTestFunc(s); 1919} 1920 1921TEST(MemorySanitizer, StructByVal) { 1922 // Large aggregates are passed as "byval" pointer argument in LLVM. 1923 struct StructByVal s; 1924 s.a = 1; 1925 s.b = *GetPoisoned<int>(); 1926 s.c = 2; 1927 s.d = *GetPoisoned<int>(); 1928 s.e = 3; 1929 s.f = *GetPoisoned<int>(); 1930 StructByValTestFunc(s); 1931 StructByValTestFunc1(s); 1932 StructByValTestFunc2(0, s); 1933} 1934 1935 1936#if MSAN_HAS_M128 1937NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 1938NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 1939TEST(MemorySanitizer, m128) { 1940 __m128i a = _mm_set1_epi16(0x1234); 1941 __m128i b = _mm_set1_epi16(0x7890); 1942 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 1943 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 1944} 1945// FIXME: add more tests for __m128i. 1946#endif // MSAN_HAS_M128 1947 1948// We should not complain when copying this poisoned hole. 1949struct StructWithHole { 1950 U4 a; 1951 // 4-byte hole. 1952 U8 b; 1953}; 1954 1955NOINLINE StructWithHole ReturnStructWithHole() { 1956 StructWithHole res; 1957 __msan_poison(&res, sizeof(res)); 1958 res.a = 1; 1959 res.b = 2; 1960 return res; 1961} 1962 1963TEST(MemorySanitizer, StructWithHole) { 1964 StructWithHole a = ReturnStructWithHole(); 1965 break_optimization(&a); 1966} 1967 1968template <class T> 1969NOINLINE T ReturnStruct() { 1970 T res; 1971 __msan_poison(&res, sizeof(res)); 1972 res.a = 1; 1973 return res; 1974} 1975 1976template <class T> 1977NOINLINE void TestReturnStruct() { 1978 T s1 = ReturnStruct<T>(); 1979 EXPECT_NOT_POISONED(s1.a); 1980 EXPECT_POISONED(s1.b); 1981} 1982 1983struct SSS1 { 1984 int a, b, c; 1985}; 1986struct SSS2 { 1987 int b, a, c; 1988}; 1989struct SSS3 { 1990 int b, c, a; 1991}; 1992struct SSS4 { 1993 int c, b, a; 1994}; 1995 1996struct SSS5 { 1997 int a; 1998 float b; 1999}; 2000struct SSS6 { 2001 int a; 2002 double b; 2003}; 2004struct SSS7 { 2005 S8 b; 2006 int a; 2007}; 2008struct SSS8 { 2009 S2 b; 2010 S8 a; 2011}; 2012 2013TEST(MemorySanitizer, IntStruct3) { 2014 TestReturnStruct<SSS1>(); 2015 TestReturnStruct<SSS2>(); 2016 TestReturnStruct<SSS3>(); 2017 TestReturnStruct<SSS4>(); 2018 TestReturnStruct<SSS5>(); 2019 TestReturnStruct<SSS6>(); 2020 TestReturnStruct<SSS7>(); 2021 TestReturnStruct<SSS8>(); 2022} 2023 2024struct LongStruct { 2025 U1 a1, b1; 2026 U2 a2, b2; 2027 U4 a4, b4; 2028 U8 a8, b8; 2029}; 2030 2031NOINLINE LongStruct ReturnLongStruct1() { 2032 LongStruct res; 2033 __msan_poison(&res, sizeof(res)); 2034 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2035 // leaves b1, .., b8 poisoned. 2036 return res; 2037} 2038 2039NOINLINE LongStruct ReturnLongStruct2() { 2040 LongStruct res; 2041 __msan_poison(&res, sizeof(res)); 2042 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2043 // leaves a1, .., a8 poisoned. 2044 return res; 2045} 2046 2047TEST(MemorySanitizer, LongStruct) { 2048 LongStruct s1 = ReturnLongStruct1(); 2049 __msan_print_shadow(&s1, sizeof(s1)); 2050 EXPECT_NOT_POISONED(s1.a1); 2051 EXPECT_NOT_POISONED(s1.a2); 2052 EXPECT_NOT_POISONED(s1.a4); 2053 EXPECT_NOT_POISONED(s1.a8); 2054 2055 EXPECT_POISONED(s1.b1); 2056 EXPECT_POISONED(s1.b2); 2057 EXPECT_POISONED(s1.b4); 2058 EXPECT_POISONED(s1.b8); 2059 2060 LongStruct s2 = ReturnLongStruct2(); 2061 __msan_print_shadow(&s2, sizeof(s2)); 2062 EXPECT_NOT_POISONED(s2.b1); 2063 EXPECT_NOT_POISONED(s2.b2); 2064 EXPECT_NOT_POISONED(s2.b4); 2065 EXPECT_NOT_POISONED(s2.b8); 2066 2067 EXPECT_POISONED(s2.a1); 2068 EXPECT_POISONED(s2.a2); 2069 EXPECT_POISONED(s2.a4); 2070 EXPECT_POISONED(s2.a8); 2071} 2072 2073TEST(MemorySanitizer, getrlimit) { 2074 struct rlimit limit; 2075 __msan_poison(&limit, sizeof(limit)); 2076 int result = getrlimit(RLIMIT_DATA, &limit); 2077 assert(result == 0); 2078 EXPECT_NOT_POISONED(limit.rlim_cur); 2079 EXPECT_NOT_POISONED(limit.rlim_max); 2080} 2081 2082TEST(MemorySanitizer, getrusage) { 2083 struct rusage usage; 2084 __msan_poison(&usage, sizeof(usage)); 2085 int result = getrusage(RUSAGE_SELF, &usage); 2086 assert(result == 0); 2087 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2088 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2089 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2090 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2091 EXPECT_NOT_POISONED(usage.ru_maxrss); 2092 EXPECT_NOT_POISONED(usage.ru_minflt); 2093 EXPECT_NOT_POISONED(usage.ru_majflt); 2094 EXPECT_NOT_POISONED(usage.ru_inblock); 2095 EXPECT_NOT_POISONED(usage.ru_oublock); 2096 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2097 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2098} 2099 2100#ifdef __GLIBC__ 2101extern char *program_invocation_name; 2102#else // __GLIBC__ 2103# error "TODO: port this" 2104#endif 2105 2106static void dladdr_testfn() {} 2107 2108TEST(MemorySanitizer, dladdr) { 2109 Dl_info info; 2110 __msan_poison(&info, sizeof(info)); 2111 int result = dladdr((const void*)dladdr_testfn, &info); 2112 assert(result != 0); 2113 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2114 if (info.dli_fname) 2115 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2116 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2117 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2118 if (info.dli_sname) 2119 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2120 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2121} 2122 2123#ifndef MSAN_TEST_DISABLE_DLOPEN 2124 2125static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2126 (*(int *)data)++; 2127 EXPECT_NOT_POISONED(info->dlpi_addr); 2128 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2129 EXPECT_NOT_POISONED(info->dlpi_phnum); 2130 for (int i = 0; i < info->dlpi_phnum; ++i) 2131 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2132 return 0; 2133} 2134 2135// Compute the path to our loadable DSO. We assume it's in the same 2136// directory. Only use string routines that we intercept so far to do this. 2137static int PathToLoadable(char *buf, size_t sz) { 2138 const char *basename = "libmsan_loadable.x86_64.so"; 2139 char *argv0 = program_invocation_name; 2140 char *last_slash = strrchr(argv0, '/'); 2141 assert(last_slash); 2142 int res = 2143 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2144 return res < sz ? 0 : res; 2145} 2146 2147TEST(MemorySanitizer, dl_iterate_phdr) { 2148 char path[4096]; 2149 int res = PathToLoadable(path, sizeof(path)); 2150 assert(!res); 2151 2152 // Having at least one dlopen'ed library in the process makes this more 2153 // entertaining. 2154 void *lib = dlopen(path, RTLD_LAZY); 2155 ASSERT_NE((void*)0, lib); 2156 2157 int count = 0; 2158 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2159 assert(count > 0); 2160 2161 dlclose(lib); 2162} 2163 2164 2165TEST(MemorySanitizer, dlopen) { 2166 char path[4096]; 2167 int res = PathToLoadable(path, sizeof(path)); 2168 assert(!res); 2169 2170 // We need to clear shadow for globals when doing dlopen. In order to test 2171 // this, we have to poison the shadow for the DSO before we load it. In 2172 // general this is difficult, but the loader tends to reload things in the 2173 // same place, so we open, close, and then reopen. The global should always 2174 // start out clean after dlopen. 2175 for (int i = 0; i < 2; i++) { 2176 void *lib = dlopen(path, RTLD_LAZY); 2177 if (lib == NULL) { 2178 printf("dlerror: %s\n", dlerror()); 2179 assert(lib != NULL); 2180 } 2181 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2182 assert(get_dso_global); 2183 void **dso_global = get_dso_global(); 2184 EXPECT_NOT_POISONED(*dso_global); 2185 __msan_poison(dso_global, sizeof(*dso_global)); 2186 EXPECT_POISONED(*dso_global); 2187 dlclose(lib); 2188 } 2189} 2190 2191// Regression test for a crash in dlopen() interceptor. 2192TEST(MemorySanitizer, dlopenFailed) { 2193 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2194 void *lib = dlopen(path, RTLD_LAZY); 2195 ASSERT_EQ(0, lib); 2196} 2197 2198#endif // MSAN_TEST_DISABLE_DLOPEN 2199 2200TEST(MemorySanitizer, sched_getaffinity) { 2201 cpu_set_t mask; 2202 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2203 ASSERT_EQ(0, res); 2204 EXPECT_NOT_POISONED(mask); 2205} 2206 2207TEST(MemorySanitizer, scanf) { 2208 const char *input = "42 hello"; 2209 int* d = new int; 2210 char* s = new char[7]; 2211 int res = sscanf(input, "%d %5s", d, s); 2212 printf("res %d\n", res); 2213 assert(res == 2); 2214 EXPECT_NOT_POISONED(*d); 2215 EXPECT_NOT_POISONED(s[0]); 2216 EXPECT_NOT_POISONED(s[1]); 2217 EXPECT_NOT_POISONED(s[2]); 2218 EXPECT_NOT_POISONED(s[3]); 2219 EXPECT_NOT_POISONED(s[4]); 2220 EXPECT_NOT_POISONED(s[5]); 2221 EXPECT_POISONED(s[6]); 2222 delete s; 2223 delete d; 2224} 2225 2226static void *SimpleThread_threadfn(void* data) { 2227 return new int; 2228} 2229 2230TEST(MemorySanitizer, SimpleThread) { 2231 pthread_t t; 2232 void *p; 2233 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2234 assert(!res); 2235 EXPECT_NOT_POISONED(t); 2236 res = pthread_join(t, &p); 2237 assert(!res); 2238 EXPECT_NOT_POISONED(p); 2239 delete (int*)p; 2240} 2241 2242static void *SmallStackThread_threadfn(void* data) { 2243 return 0; 2244} 2245 2246TEST(MemorySanitizer, SmallStackThread) { 2247 pthread_attr_t attr; 2248 pthread_t t; 2249 void *p; 2250 int res; 2251 res = pthread_attr_init(&attr); 2252 ASSERT_EQ(0, res); 2253 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2254 ASSERT_EQ(0, res); 2255 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2256 ASSERT_EQ(0, res); 2257 res = pthread_join(t, &p); 2258 ASSERT_EQ(0, res); 2259 res = pthread_attr_destroy(&attr); 2260 ASSERT_EQ(0, res); 2261} 2262 2263TEST(MemorySanitizer, PreAllocatedStackThread) { 2264 pthread_attr_t attr; 2265 pthread_t t; 2266 int res; 2267 res = pthread_attr_init(&attr); 2268 ASSERT_EQ(0, res); 2269 void *stack; 2270 const size_t kStackSize = 64 * 1024; 2271 res = posix_memalign(&stack, 4096, kStackSize); 2272 ASSERT_EQ(0, res); 2273 res = pthread_attr_setstack(&attr, stack, kStackSize); 2274 ASSERT_EQ(0, res); 2275 // A small self-allocated stack can not be extended by the tool. 2276 // In this case pthread_create is expected to fail. 2277 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2278 EXPECT_NE(0, res); 2279 res = pthread_attr_destroy(&attr); 2280 ASSERT_EQ(0, res); 2281} 2282 2283TEST(MemorySanitizer, pthread_getschedparam) { 2284 int policy; 2285 struct sched_param param; 2286 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2287 ASSERT_EQ(0, res); 2288 EXPECT_NOT_POISONED(policy); 2289 EXPECT_NOT_POISONED(param.sched_priority); 2290} 2291 2292TEST(MemorySanitizer, pthread_key_create) { 2293 pthread_key_t key; 2294 int res = pthread_key_create(&key, NULL); 2295 assert(!res); 2296 EXPECT_NOT_POISONED(key); 2297 res = pthread_key_delete(key); 2298 assert(!res); 2299} 2300 2301TEST(MemorySanitizer, posix_memalign) { 2302 void *p; 2303 EXPECT_POISONED(p); 2304 int res = posix_memalign(&p, 4096, 13); 2305 ASSERT_EQ(0, res); 2306 EXPECT_NOT_POISONED(p); 2307 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2308 free(p); 2309} 2310 2311TEST(MemorySanitizer, memalign) { 2312 void *p = memalign(4096, 13); 2313 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2314 free(p); 2315} 2316 2317TEST(MemorySanitizer, valloc) { 2318 void *a = valloc(100); 2319 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2320 free(a); 2321} 2322 2323TEST(MemorySanitizer, pvalloc) { 2324 void *p = pvalloc(kPageSize + 100); 2325 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2326 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2327 free(p); 2328 2329 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2330 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2331 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2332 free(p); 2333} 2334 2335TEST(MemorySanitizer, inet_pton) { 2336 const char *s = "1:0:0:0:0:0:0:8"; 2337 unsigned char buf[sizeof(struct in6_addr)]; 2338 int res = inet_pton(AF_INET6, s, buf); 2339 ASSERT_EQ(1, res); 2340 EXPECT_NOT_POISONED(buf[0]); 2341 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2342 2343 char s_out[INET6_ADDRSTRLEN]; 2344 EXPECT_POISONED(s_out[3]); 2345 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2346 ASSERT_NE((void*)0, q); 2347 EXPECT_NOT_POISONED(s_out[3]); 2348} 2349 2350TEST(MemorySanitizer, inet_aton) { 2351 const char *s = "127.0.0.1"; 2352 struct in_addr in[2]; 2353 int res = inet_aton(s, in); 2354 ASSERT_NE(0, res); 2355 EXPECT_NOT_POISONED(in[0]); 2356 EXPECT_POISONED(*(char *)(in + 1)); 2357} 2358 2359TEST(MemorySanitizer, uname) { 2360 struct utsname u; 2361 int res = uname(&u); 2362 assert(!res); 2363 EXPECT_NOT_POISONED(strlen(u.sysname)); 2364 EXPECT_NOT_POISONED(strlen(u.nodename)); 2365 EXPECT_NOT_POISONED(strlen(u.release)); 2366 EXPECT_NOT_POISONED(strlen(u.version)); 2367 EXPECT_NOT_POISONED(strlen(u.machine)); 2368} 2369 2370TEST(MemorySanitizer, gethostname) { 2371 char buf[100]; 2372 int res = gethostname(buf, 100); 2373 assert(!res); 2374 EXPECT_NOT_POISONED(strlen(buf)); 2375} 2376 2377TEST(MemorySanitizer, sysinfo) { 2378 struct sysinfo info; 2379 int res = sysinfo(&info); 2380 assert(!res); 2381 EXPECT_NOT_POISONED(info); 2382} 2383 2384TEST(MemorySanitizer, getpwuid) { 2385 struct passwd *p = getpwuid(0); // root 2386 assert(p); 2387 EXPECT_NOT_POISONED(p->pw_name); 2388 assert(p->pw_name); 2389 EXPECT_NOT_POISONED(p->pw_name[0]); 2390 EXPECT_NOT_POISONED(p->pw_uid); 2391 assert(p->pw_uid == 0); 2392} 2393 2394TEST(MemorySanitizer, getpwnam_r) { 2395 struct passwd pwd; 2396 struct passwd *pwdres; 2397 char buf[10000]; 2398 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2399 assert(!res); 2400 EXPECT_NOT_POISONED(pwd.pw_name); 2401 assert(pwd.pw_name); 2402 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2403 EXPECT_NOT_POISONED(pwd.pw_uid); 2404 assert(pwd.pw_uid == 0); 2405} 2406 2407TEST(MemorySanitizer, getpwnam_r_positive) { 2408 struct passwd pwd; 2409 struct passwd *pwdres; 2410 char s[5]; 2411 strncpy(s, "abcd", 5); 2412 __msan_poison(s, 5); 2413 char buf[10000]; 2414 int res; 2415 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2416} 2417 2418TEST(MemorySanitizer, getgrnam_r) { 2419 struct group grp; 2420 struct group *grpres; 2421 char buf[10000]; 2422 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2423 assert(!res); 2424 EXPECT_NOT_POISONED(grp.gr_name); 2425 assert(grp.gr_name); 2426 EXPECT_NOT_POISONED(grp.gr_name[0]); 2427 EXPECT_NOT_POISONED(grp.gr_gid); 2428} 2429 2430TEST(MemorySanitizer, getgroups) { 2431 int n = getgroups(0, 0); 2432 gid_t *gids = new gid_t[n]; 2433 int res = getgroups(n, gids); 2434 ASSERT_EQ(n, res); 2435 for (int i = 0; i < n; ++i) 2436 EXPECT_NOT_POISONED(gids[i]); 2437} 2438 2439TEST(MemorySanitizer, wordexp) { 2440 wordexp_t w; 2441 int res = wordexp("a b c", &w, 0); 2442 ASSERT_EQ(0, res); 2443 ASSERT_EQ(3, w.we_wordc); 2444 ASSERT_STREQ("a", w.we_wordv[0]); 2445 ASSERT_STREQ("b", w.we_wordv[1]); 2446 ASSERT_STREQ("c", w.we_wordv[2]); 2447} 2448 2449template<class T> 2450static bool applySlt(T value, T shadow) { 2451 __msan_partial_poison(&value, &shadow, sizeof(T)); 2452 volatile bool zzz = true; 2453 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2454 // a shift-and-trunc to get at the highest bit. 2455 volatile bool v = value < 0 || zzz; 2456 return v; 2457} 2458 2459TEST(MemorySanitizer, SignedCompareWithZero) { 2460 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2461 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2462 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2463 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2464 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2465 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2466} 2467 2468template <class T, class S> 2469static T poisoned(T Va, S Sa) { 2470 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2471 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2472 T a; 2473 a = Va; 2474 __msan_partial_poison(&a, &Sa, sizeof(T)); 2475 return a; 2476} 2477 2478TEST(MemorySanitizer, ICmpRelational) { 2479 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2480 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2481 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2482 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2483 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2484 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2485 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2486 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2487 poisoned(-1, 0xFFFFFFFFU)); 2488 2489 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2490 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2491 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2492 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2493 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2494 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2495 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2496 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2497 poisoned(-1, 0xFFFFFFFFU)); 2498 2499 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2500 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2501 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2502 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2503 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2504 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2505 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2506 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2507 poisoned(-1, 0xFFFFFFFFU)); 2508 2509 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2510 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2511 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2512 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2513 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2514 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2515 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2516 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2517 poisoned(-1, 0xFFFFFFFFU)); 2518 2519 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2520 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2521 2522 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2523} 2524 2525#if MSAN_HAS_M128 2526TEST(MemorySanitizer, ICmpVectorRelational) { 2527 EXPECT_NOT_POISONED( 2528 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2529 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2530 EXPECT_NOT_POISONED( 2531 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2532 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2533 EXPECT_POISONED( 2534 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2535 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2536 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2537 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2538} 2539#endif 2540 2541// Volatile bitfield store is implemented as load-mask-store 2542// Test that we don't warn on the store of (uninitialized) padding. 2543struct VolatileBitfieldStruct { 2544 volatile unsigned x : 1; 2545 unsigned y : 1; 2546}; 2547 2548TEST(MemorySanitizer, VolatileBitfield) { 2549 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2550 S->x = 1; 2551 EXPECT_NOT_POISONED((unsigned)S->x); 2552 EXPECT_POISONED((unsigned)S->y); 2553} 2554 2555TEST(MemorySanitizer, UnalignedLoad) { 2556 char x[32]; 2557 memset(x + 8, 0, 16); 2558 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2559 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2560 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2561 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2562 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2563 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2564 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2565 2566 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2567 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2568 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2569 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2570 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2571 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2572 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2573 2574 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2575 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2576 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2577 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2578 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2579 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2580 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2581 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2582 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2583} 2584 2585TEST(MemorySanitizer, UnalignedStore16) { 2586 char x[5]; 2587 U2 y = 0; 2588 __msan_poison(&y, 1); 2589 __sanitizer_unaligned_store16(x + 1, y); 2590 EXPECT_POISONED(x[0]); 2591 EXPECT_POISONED(x[1]); 2592 EXPECT_NOT_POISONED(x[2]); 2593 EXPECT_POISONED(x[3]); 2594 EXPECT_POISONED(x[4]); 2595} 2596 2597TEST(MemorySanitizer, UnalignedStore32) { 2598 char x[8]; 2599 U4 y4 = 0; 2600 __msan_poison(&y4, 2); 2601 __sanitizer_unaligned_store32(x+3, y4); 2602 EXPECT_POISONED(x[0]); 2603 EXPECT_POISONED(x[1]); 2604 EXPECT_POISONED(x[2]); 2605 EXPECT_POISONED(x[3]); 2606 EXPECT_POISONED(x[4]); 2607 EXPECT_NOT_POISONED(x[5]); 2608 EXPECT_NOT_POISONED(x[6]); 2609 EXPECT_POISONED(x[7]); 2610} 2611 2612TEST(MemorySanitizer, UnalignedStore64) { 2613 char x[16]; 2614 U8 y = 0; 2615 __msan_poison(&y, 3); 2616 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2617 __sanitizer_unaligned_store64(x+3, y); 2618 EXPECT_POISONED(x[0]); 2619 EXPECT_POISONED(x[1]); 2620 EXPECT_POISONED(x[2]); 2621 EXPECT_POISONED(x[3]); 2622 EXPECT_POISONED(x[4]); 2623 EXPECT_POISONED(x[5]); 2624 EXPECT_NOT_POISONED(x[6]); 2625 EXPECT_NOT_POISONED(x[7]); 2626 EXPECT_NOT_POISONED(x[8]); 2627 EXPECT_POISONED(x[9]); 2628 EXPECT_NOT_POISONED(x[10]); 2629 EXPECT_POISONED(x[11]); 2630} 2631 2632TEST(MemorySanitizerDr, StoreInDSOTest) { 2633 if (!__msan_has_dynamic_component()) return; 2634 char* s = new char[10]; 2635 dso_memfill(s, 9); 2636 EXPECT_NOT_POISONED(s[5]); 2637 EXPECT_POISONED(s[9]); 2638} 2639 2640int return_poisoned_int() { 2641 return ReturnPoisoned<U8>(); 2642} 2643 2644TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2645 if (!__msan_has_dynamic_component()) return; 2646 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2647} 2648 2649NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2650 EXPECT_POISONED(x); 2651 EXPECT_POISONED(y); 2652 EXPECT_POISONED(z); 2653 return 0; 2654} 2655 2656static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2657 EXPECT_NOT_POISONED(x); 2658 EXPECT_NOT_POISONED(y); 2659 EXPECT_NOT_POISONED(z); 2660 return 0; 2661} 2662 2663TEST(MemorySanitizerDr, CallFromDSOTest) { 2664 if (!__msan_has_dynamic_component()) return; 2665 S8* x = GetPoisoned<S8>(); 2666 S8* y = GetPoisoned<S8>(); 2667 S8* z = GetPoisoned<S8>(); 2668 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 2669 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 2670} 2671 2672static void StackStoreInDSOFn(int* x, int* y) { 2673 EXPECT_NOT_POISONED(*x); 2674 EXPECT_NOT_POISONED(*y); 2675} 2676 2677TEST(MemorySanitizerDr, StackStoreInDSOTest) { 2678 if (!__msan_has_dynamic_component()) return; 2679 dso_stack_store(StackStoreInDSOFn, 1); 2680} 2681 2682TEST(MemorySanitizerOrigins, SetGet) { 2683 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 2684 if (!TrackingOrigins()) return; 2685 int x; 2686 __msan_set_origin(&x, sizeof(x), 1234); 2687 EXPECT_EQ(1234, __msan_get_origin(&x)); 2688 __msan_set_origin(&x, sizeof(x), 5678); 2689 EXPECT_EQ(5678, __msan_get_origin(&x)); 2690 __msan_set_origin(&x, sizeof(x), 0); 2691 EXPECT_EQ(0, __msan_get_origin(&x)); 2692} 2693 2694namespace { 2695struct S { 2696 U4 dummy; 2697 U2 a; 2698 U2 b; 2699}; 2700 2701// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 2702TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 2703 if (!TrackingOrigins()) return; 2704 2705 S s; 2706 U4 origin = rand(); // NOLINT 2707 s.a = *GetPoisonedO<U2>(0, origin); 2708 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2709 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2710 2711 s.b = 42; 2712 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 2713 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 2714} 2715} // namespace 2716 2717template<class T, class BinaryOp> 2718INLINE 2719void BinaryOpOriginTest(BinaryOp op) { 2720 U4 ox = rand(); //NOLINT 2721 U4 oy = rand(); //NOLINT 2722 T *x = GetPoisonedO<T>(0, ox, 0); 2723 T *y = GetPoisonedO<T>(1, oy, 0); 2724 T *z = GetPoisonedO<T>(2, 0, 0); 2725 2726 *z = op(*x, *y); 2727 U4 origin = __msan_get_origin(z); 2728 EXPECT_POISONED_O(*z, origin); 2729 EXPECT_EQ(true, origin == ox || origin == oy); 2730 2731 // y is poisoned, x is not. 2732 *x = 10101; 2733 *y = *GetPoisonedO<T>(1, oy); 2734 break_optimization(x); 2735 __msan_set_origin(z, sizeof(*z), 0); 2736 *z = op(*x, *y); 2737 EXPECT_POISONED_O(*z, oy); 2738 EXPECT_EQ(__msan_get_origin(z), oy); 2739 2740 // x is poisoned, y is not. 2741 *x = *GetPoisonedO<T>(0, ox); 2742 *y = 10101010; 2743 break_optimization(y); 2744 __msan_set_origin(z, sizeof(*z), 0); 2745 *z = op(*x, *y); 2746 EXPECT_POISONED_O(*z, ox); 2747 EXPECT_EQ(__msan_get_origin(z), ox); 2748} 2749 2750template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 2751template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 2752template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 2753template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 2754template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 2755template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 2756 2757TEST(MemorySanitizerOrigins, BinaryOp) { 2758 if (!TrackingOrigins()) return; 2759 BinaryOpOriginTest<S8>(XOR<S8>); 2760 BinaryOpOriginTest<U8>(ADD<U8>); 2761 BinaryOpOriginTest<S4>(SUB<S4>); 2762 BinaryOpOriginTest<S4>(MUL<S4>); 2763 BinaryOpOriginTest<U4>(OR<U4>); 2764 BinaryOpOriginTest<U4>(AND<U4>); 2765 BinaryOpOriginTest<double>(ADD<U4>); 2766 BinaryOpOriginTest<float>(ADD<S4>); 2767 BinaryOpOriginTest<double>(ADD<double>); 2768 BinaryOpOriginTest<float>(ADD<double>); 2769} 2770 2771TEST(MemorySanitizerOrigins, Unary) { 2772 if (!TrackingOrigins()) return; 2773 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2774 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2775 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2776 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2777 2778 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2779 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2780 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2781 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2782 2783 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2784 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2785 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2786 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 2787 2788 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2789 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2790 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2791 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2792 2793 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 2794 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 2795} 2796 2797TEST(MemorySanitizerOrigins, EQ) { 2798 if (!TrackingOrigins()) return; 2799 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 2800 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 2801 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 2802} 2803 2804TEST(MemorySanitizerOrigins, DIV) { 2805 if (!TrackingOrigins()) return; 2806 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 2807 unsigned o = __LINE__; 2808 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 2809} 2810 2811TEST(MemorySanitizerOrigins, SHIFT) { 2812 if (!TrackingOrigins()) return; 2813 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 2814 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 2815 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 2816 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 2817 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2818 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 2819} 2820 2821template<class T, int N> 2822void MemCpyTest() { 2823 int ox = __LINE__; 2824 T *x = new T[N]; 2825 T *y = new T[N]; 2826 T *z = new T[N]; 2827 T *q = new T[N]; 2828 __msan_poison(x, N * sizeof(T)); 2829 __msan_set_origin(x, N * sizeof(T), ox); 2830 __msan_set_origin(y, N * sizeof(T), 777777); 2831 __msan_set_origin(z, N * sizeof(T), 888888); 2832 EXPECT_NOT_POISONED(x); 2833 memcpy(y, x, N * sizeof(T)); 2834 EXPECT_POISONED_O(y[0], ox); 2835 EXPECT_POISONED_O(y[N/2], ox); 2836 EXPECT_POISONED_O(y[N-1], ox); 2837 EXPECT_NOT_POISONED(x); 2838 void *res = mempcpy(q, x, N * sizeof(T)); 2839 ASSERT_EQ(q + N, res); 2840 EXPECT_POISONED_O(q[0], ox); 2841 EXPECT_POISONED_O(q[N/2], ox); 2842 EXPECT_POISONED_O(q[N-1], ox); 2843 EXPECT_NOT_POISONED(x); 2844 memmove(z, x, N * sizeof(T)); 2845 EXPECT_POISONED_O(z[0], ox); 2846 EXPECT_POISONED_O(z[N/2], ox); 2847 EXPECT_POISONED_O(z[N-1], ox); 2848} 2849 2850TEST(MemorySanitizerOrigins, LargeMemCpy) { 2851 if (!TrackingOrigins()) return; 2852 MemCpyTest<U1, 10000>(); 2853 MemCpyTest<U8, 10000>(); 2854} 2855 2856TEST(MemorySanitizerOrigins, SmallMemCpy) { 2857 if (!TrackingOrigins()) return; 2858 MemCpyTest<U8, 1>(); 2859 MemCpyTest<U8, 2>(); 2860 MemCpyTest<U8, 3>(); 2861} 2862 2863TEST(MemorySanitizerOrigins, Select) { 2864 if (!TrackingOrigins()) return; 2865 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 2866 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 2867 S4 x; 2868 break_optimization(&x); 2869 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 2870 2871 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 2872 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 2873} 2874 2875extern "C" 2876NOINLINE char AllocaTO() { 2877 int ar[100]; 2878 break_optimization(ar); 2879 return ar[10]; 2880 // fprintf(stderr, "Descr: %s\n", 2881 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 2882} 2883 2884TEST(MemorySanitizerOrigins, Alloca) { 2885 if (!TrackingOrigins()) return; 2886 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2887 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2888 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2889 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 2890} 2891 2892// FIXME: replace with a lit-like test. 2893TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 2894 if (!TrackingOrigins()) return; 2895 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 2896} 2897 2898NOINLINE int RetvalOriginTest(U4 origin) { 2899 int *a = new int; 2900 break_optimization(a); 2901 __msan_set_origin(a, sizeof(*a), origin); 2902 int res = *a; 2903 delete a; 2904 return res; 2905} 2906 2907TEST(MemorySanitizerOrigins, Retval) { 2908 if (!TrackingOrigins()) return; 2909 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2910} 2911 2912NOINLINE void ParamOriginTest(int param, U4 origin) { 2913 EXPECT_POISONED_O(param, origin); 2914} 2915 2916TEST(MemorySanitizerOrigins, Param) { 2917 if (!TrackingOrigins()) return; 2918 int *a = new int; 2919 U4 origin = __LINE__; 2920 break_optimization(a); 2921 __msan_set_origin(a, sizeof(*a), origin); 2922 ParamOriginTest(*a, origin); 2923 delete a; 2924} 2925 2926TEST(MemorySanitizerOrigins, Invoke) { 2927 if (!TrackingOrigins()) return; 2928 StructWithDtor s; // Will cause the calls to become invokes. 2929 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 2930} 2931 2932TEST(MemorySanitizerOrigins, strlen) { 2933 S8 alignment; 2934 break_optimization(&alignment); 2935 char x[4] = {'a', 'b', 0, 0}; 2936 __msan_poison(&x[2], 1); 2937 U4 origin = __LINE__; 2938 __msan_set_origin(x, sizeof(x), origin); 2939 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 2940} 2941 2942TEST(MemorySanitizerOrigins, wcslen) { 2943 wchar_t w[3] = {'a', 'b', 0}; 2944 U4 origin = __LINE__; 2945 __msan_set_origin(w, sizeof(w), origin); 2946 __msan_poison(&w[2], sizeof(wchar_t)); 2947 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 2948} 2949 2950#if MSAN_HAS_M128 2951TEST(MemorySanitizerOrigins, StoreIntrinsic) { 2952 __m128 x, y; 2953 U4 origin = __LINE__; 2954 __msan_set_origin(&x, sizeof(x), origin); 2955 __msan_poison(&x, sizeof(x)); 2956 __builtin_ia32_storeups((float*)&y, x); 2957 EXPECT_POISONED_O(y, origin); 2958} 2959#endif 2960 2961NOINLINE void RecursiveMalloc(int depth) { 2962 static int count; 2963 count++; 2964 if ((count % (1024 * 1024)) == 0) 2965 printf("RecursiveMalloc: %d\n", count); 2966 int *x1 = new int; 2967 int *x2 = new int; 2968 break_optimization(x1); 2969 break_optimization(x2); 2970 if (depth > 0) { 2971 RecursiveMalloc(depth-1); 2972 RecursiveMalloc(depth-1); 2973 } 2974 delete x1; 2975 delete x2; 2976} 2977 2978TEST(MemorySanitizer, CallocOverflow) { 2979 size_t kArraySize = 4096; 2980 volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 2981 volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 2982 void *p = 0; 2983 EXPECT_DEATH(p = calloc(kArraySize, kArraySize2), 2984 "llocator is terminating the process instead of returning 0"); 2985 EXPECT_EQ(0L, Ident(p)); 2986} 2987 2988TEST(MemorySanitizer, Select) { 2989 int x; 2990 int volatile* p = &x; 2991 int z = *p ? 1 : 0; 2992 EXPECT_POISONED(z); 2993} 2994 2995TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 2996 RecursiveMalloc(22); 2997} 2998 2999TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3000 size_t sizes[] = {0, 20, 5000, 1<<20}; 3001 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3002 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3003 EXPECT_EQ(alloc_size, sizes[i]); 3004 } 3005} 3006 3007TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3008 char *array = reinterpret_cast<char*>(malloc(100)); 3009 int *int_ptr = new int; 3010 3011 EXPECT_TRUE(__msan_get_ownership(array)); 3012 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3013 3014 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3015 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3016 3017 void *wild_addr = reinterpret_cast<void*>(0x1); 3018 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3019 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3020 3021 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3022 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3023 3024 // NULL is a valid argument for GetAllocatedSize but is not owned. 3025 EXPECT_FALSE(__msan_get_ownership(NULL)); 3026 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3027 3028 free(array); 3029 EXPECT_FALSE(__msan_get_ownership(array)); 3030 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3031 3032 delete int_ptr; 3033} 3034