msan_test.cc revision 3a3805f4923cddef1ac3e71ee52ffc7e30c93bbf
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/statvfs.h> 45#include <sys/sysinfo.h> 46#include <sys/utsname.h> 47#include <sys/mman.h> 48#include <sys/vfs.h> 49#include <dirent.h> 50#include <pwd.h> 51#include <sys/socket.h> 52#include <netdb.h> 53#include <wordexp.h> 54#include <mntent.h> 55#include <netinet/ether.h> 56#include <sys/ipc.h> 57#include <sys/shm.h> 58 59#if defined(__i386__) || defined(__x86_64__) 60# include <emmintrin.h> 61# define MSAN_HAS_M128 1 62#else 63# define MSAN_HAS_M128 0 64#endif 65 66static const int kPageSize = 4096; 67 68typedef unsigned char U1; 69typedef unsigned short U2; // NOLINT 70typedef unsigned int U4; 71typedef unsigned long long U8; // NOLINT 72typedef signed char S1; 73typedef signed short S2; // NOLINT 74typedef signed int S4; 75typedef signed long long S8; // NOLINT 76#define NOINLINE __attribute__((noinline)) 77#define INLINE __attribute__((always_inline)) 78 79static bool TrackingOrigins() { 80 S8 x; 81 __msan_set_origin(&x, sizeof(x), 0x1234); 82 U4 origin = __msan_get_origin(&x); 83 __msan_set_origin(&x, sizeof(x), 0); 84 return origin == 0x1234; 85} 86 87#define EXPECT_UMR(action) \ 88 do { \ 89 __msan_set_expect_umr(1); \ 90 action; \ 91 __msan_set_expect_umr(0); \ 92 } while (0) 93 94#define EXPECT_UMR_O(action, origin) \ 95 do { \ 96 __msan_set_expect_umr(1); \ 97 action; \ 98 __msan_set_expect_umr(0); \ 99 if (TrackingOrigins()) \ 100 EXPECT_EQ(origin, __msan_get_umr_origin()); \ 101 } while (0) 102 103#define EXPECT_UMR_S(action, stack_origin) \ 104 do { \ 105 __msan_set_expect_umr(1); \ 106 action; \ 107 __msan_set_expect_umr(0); \ 108 U4 id = __msan_get_umr_origin(); \ 109 const char *str = __msan_get_origin_descr_if_stack(id); \ 110 if (!str || strcmp(str, stack_origin)) { \ 111 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 112 id, stack_origin, str); \ 113 EXPECT_EQ(1, 0); \ 114 } \ 115 } while (0) 116 117#define EXPECT_POISONED(x) ExpectPoisoned(x) 118 119template<typename T> 120void ExpectPoisoned(const T& t) { 121 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 122} 123 124#define EXPECT_POISONED_O(x, origin) \ 125 ExpectPoisonedWithOrigin(x, origin) 126 127template<typename T> 128void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 129 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 130 if (TrackingOrigins()) 131 EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 132} 133 134#define EXPECT_POISONED_S(x, stack_origin) \ 135 ExpectPoisonedWithStackOrigin(x, stack_origin) 136 137template<typename T> 138void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 139 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 140 U4 id = __msan_get_origin((void*)&t); 141 const char *str = __msan_get_origin_descr_if_stack(id); 142 if (!str || strcmp(str, stack_origin)) { 143 fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 144 id, stack_origin, str); 145 EXPECT_EQ(1, 0); 146 } 147} 148 149#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 150 151template<typename T> 152void ExpectNotPoisoned(const T& t) { 153 EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 154} 155 156static U8 poisoned_array[100]; 157template<class T> 158T *GetPoisoned(int i = 0, T val = 0) { 159 T *res = (T*)&poisoned_array[i]; 160 *res = val; 161 __msan_poison(&poisoned_array[i], sizeof(T)); 162 return res; 163} 164 165template<class T> 166T *GetPoisonedO(int i, U4 origin, T val = 0) { 167 T *res = (T*)&poisoned_array[i]; 168 *res = val; 169 __msan_poison(&poisoned_array[i], sizeof(T)); 170 __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 171 return res; 172} 173 174// This function returns its parameter but in such a way that compiler 175// can not prove it. 176template<class T> 177NOINLINE 178static T Ident(T t) { 179 volatile T ret = t; 180 return ret; 181} 182 183template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 184 185static volatile int g_one = 1; 186static volatile int g_zero = 0; 187static volatile int g_0 = 0; 188static volatile int g_1 = 1; 189 190S4 a_s4[100]; 191S8 a_s8[100]; 192 193// Check that malloc poisons memory. 194// A lot of tests below depend on this. 195TEST(MemorySanitizerSanity, PoisonInMalloc) { 196 int *x = (int*)malloc(sizeof(int)); 197 EXPECT_POISONED(*x); 198 free(x); 199} 200 201TEST(MemorySanitizer, NegativeTest1) { 202 S4 *x = GetPoisoned<S4>(); 203 if (g_one) 204 *x = 0; 205 EXPECT_NOT_POISONED(*x); 206} 207 208TEST(MemorySanitizer, PositiveTest1) { 209 // Load to store. 210 EXPECT_POISONED(*GetPoisoned<S1>()); 211 EXPECT_POISONED(*GetPoisoned<S2>()); 212 EXPECT_POISONED(*GetPoisoned<S4>()); 213 EXPECT_POISONED(*GetPoisoned<S8>()); 214 215 // S->S conversions. 216 EXPECT_POISONED(*GetPoisoned<S1>()); 217 EXPECT_POISONED(*GetPoisoned<S1>()); 218 EXPECT_POISONED(*GetPoisoned<S1>()); 219 220 EXPECT_POISONED(*GetPoisoned<S2>()); 221 EXPECT_POISONED(*GetPoisoned<S2>()); 222 EXPECT_POISONED(*GetPoisoned<S2>()); 223 224 EXPECT_POISONED(*GetPoisoned<S4>()); 225 EXPECT_POISONED(*GetPoisoned<S4>()); 226 EXPECT_POISONED(*GetPoisoned<S4>()); 227 228 EXPECT_POISONED(*GetPoisoned<S8>()); 229 EXPECT_POISONED(*GetPoisoned<S8>()); 230 EXPECT_POISONED(*GetPoisoned<S8>()); 231 232 // ZExt 233 EXPECT_POISONED(*GetPoisoned<U1>()); 234 EXPECT_POISONED(*GetPoisoned<U1>()); 235 EXPECT_POISONED(*GetPoisoned<U1>()); 236 EXPECT_POISONED(*GetPoisoned<U2>()); 237 EXPECT_POISONED(*GetPoisoned<U2>()); 238 EXPECT_POISONED(*GetPoisoned<U4>()); 239 240 // Unary ops. 241 EXPECT_POISONED(- *GetPoisoned<S4>()); 242 243 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 244 245 246 a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 247 a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 248} 249 250TEST(MemorySanitizer, Phi1) { 251 S4 c; 252 if (g_one) { 253 c = *GetPoisoned<S4>(); 254 } else { 255 break_optimization(0); 256 c = 0; 257 } 258 EXPECT_POISONED(c); 259} 260 261TEST(MemorySanitizer, Phi2) { 262 S4 i = *GetPoisoned<S4>(); 263 S4 n = g_one; 264 EXPECT_UMR(for (; i < g_one; i++);); 265 EXPECT_POISONED(i); 266} 267 268NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 269NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 270NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 271 272TEST(MemorySanitizer, ArgTest) { 273 Arg1ExpectUMR(*GetPoisoned<S4>()); 274 Arg2ExpectUMR(0, *GetPoisoned<S4>()); 275 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 276} 277 278 279TEST(MemorySanitizer, CallAndRet) { 280 if (!__msan_has_dynamic_component()) return; 281 ReturnPoisoned<S1>(); 282 ReturnPoisoned<S2>(); 283 ReturnPoisoned<S4>(); 284 ReturnPoisoned<S8>(); 285 286 EXPECT_POISONED(ReturnPoisoned<S1>()); 287 EXPECT_POISONED(ReturnPoisoned<S2>()); 288 EXPECT_POISONED(ReturnPoisoned<S4>()); 289 EXPECT_POISONED(ReturnPoisoned<S8>()); 290} 291 292// malloc() in the following test may be optimized to produce a compile-time 293// undef value. Check that we trap on the volatile assignment anyway. 294TEST(MemorySanitizer, DISABLED_MallocNoIdent) { 295 S4 *x = (int*)malloc(sizeof(S4)); 296 EXPECT_POISONED(*x); 297 free(x); 298} 299 300TEST(MemorySanitizer, Malloc) { 301 S4 *x = (int*)Ident(malloc(sizeof(S4))); 302 EXPECT_POISONED(*x); 303 free(x); 304} 305 306TEST(MemorySanitizer, Realloc) { 307 S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 308 EXPECT_POISONED(x[0]); 309 x[0] = 1; 310 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 311 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 312 EXPECT_POISONED(x[1]); 313 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 314 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 315 EXPECT_POISONED(x[2]); 316 EXPECT_POISONED(x[1]); 317 x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 318 x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 319 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 320 EXPECT_POISONED(x[1]); 321 x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 322 EXPECT_POISONED(x[1]); 323 EXPECT_POISONED(x[2]); 324 free(x); 325} 326 327TEST(MemorySanitizer, Calloc) { 328 S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 329 EXPECT_NOT_POISONED(*x); // Should not be poisoned. 330 // EXPECT_EQ(0, *x); 331 free(x); 332} 333 334TEST(MemorySanitizer, AndOr) { 335 U4 *p = GetPoisoned<U4>(); 336 // We poison two bytes in the midle of a 4-byte word to make the test 337 // correct regardless of endianness. 338 ((U1*)p)[1] = 0; 339 ((U1*)p)[2] = 0xff; 340 EXPECT_NOT_POISONED(*p & 0x00ffff00); 341 EXPECT_NOT_POISONED(*p & 0x00ff0000); 342 EXPECT_NOT_POISONED(*p & 0x0000ff00); 343 EXPECT_POISONED(*p & 0xff000000); 344 EXPECT_POISONED(*p & 0x000000ff); 345 EXPECT_POISONED(*p & 0x0000ffff); 346 EXPECT_POISONED(*p & 0xffff0000); 347 348 EXPECT_NOT_POISONED(*p | 0xff0000ff); 349 EXPECT_NOT_POISONED(*p | 0xff00ffff); 350 EXPECT_NOT_POISONED(*p | 0xffff00ff); 351 EXPECT_POISONED(*p | 0xff000000); 352 EXPECT_POISONED(*p | 0x000000ff); 353 EXPECT_POISONED(*p | 0x0000ffff); 354 EXPECT_POISONED(*p | 0xffff0000); 355 356 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 357} 358 359template<class T> 360static bool applyNot(T value, T shadow) { 361 __msan_partial_poison(&value, &shadow, sizeof(T)); 362 return !value; 363} 364 365TEST(MemorySanitizer, Not) { 366 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 367 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 368 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 369 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 370 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 371 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 372 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 373 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); 374 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); 375 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); 376 377 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); 378 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); 379 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); 380 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); 381 382 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); 383 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); 384} 385 386TEST(MemorySanitizer, Shift) { 387 U4 *up = GetPoisoned<U4>(); 388 ((U1*)up)[0] = 0; 389 ((U1*)up)[3] = 0xff; 390 EXPECT_NOT_POISONED(*up >> 30); 391 EXPECT_NOT_POISONED(*up >> 24); 392 EXPECT_POISONED(*up >> 23); 393 EXPECT_POISONED(*up >> 10); 394 395 EXPECT_NOT_POISONED(*up << 30); 396 EXPECT_NOT_POISONED(*up << 24); 397 EXPECT_POISONED(*up << 23); 398 EXPECT_POISONED(*up << 10); 399 400 S4 *sp = (S4*)up; 401 EXPECT_NOT_POISONED(*sp >> 30); 402 EXPECT_NOT_POISONED(*sp >> 24); 403 EXPECT_POISONED(*sp >> 23); 404 EXPECT_POISONED(*sp >> 10); 405 406 sp = GetPoisoned<S4>(); 407 ((S1*)sp)[1] = 0; 408 ((S1*)sp)[2] = 0; 409 EXPECT_POISONED(*sp >> 31); 410 411 EXPECT_POISONED(100 >> *GetPoisoned<S4>()); 412 EXPECT_POISONED(100U >> *GetPoisoned<S4>()); 413} 414 415NOINLINE static int GetPoisonedZero() { 416 int *zero = new int; 417 *zero = 0; 418 __msan_poison(zero, sizeof(*zero)); 419 int res = *zero; 420 delete zero; 421 return res; 422} 423 424TEST(MemorySanitizer, LoadFromDirtyAddress) { 425 int *a = new int; 426 *a = 0; 427 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); 428 delete a; 429} 430 431TEST(MemorySanitizer, StoreToDirtyAddress) { 432 int *a = new int; 433 EXPECT_UMR(a[GetPoisonedZero()] = 0); 434 break_optimization(a); 435 delete a; 436} 437 438 439NOINLINE void StackTestFunc() { 440 S4 p4; 441 S4 ok4 = 1; 442 S2 p2; 443 S2 ok2 = 1; 444 S1 p1; 445 S1 ok1 = 1; 446 break_optimization(&p4); 447 break_optimization(&ok4); 448 break_optimization(&p2); 449 break_optimization(&ok2); 450 break_optimization(&p1); 451 break_optimization(&ok1); 452 453 EXPECT_POISONED(p4); 454 EXPECT_POISONED(p2); 455 EXPECT_POISONED(p1); 456 EXPECT_NOT_POISONED(ok1); 457 EXPECT_NOT_POISONED(ok2); 458 EXPECT_NOT_POISONED(ok4); 459} 460 461TEST(MemorySanitizer, StackTest) { 462 StackTestFunc(); 463} 464 465NOINLINE void StackStressFunc() { 466 int foo[10000]; 467 break_optimization(foo); 468} 469 470TEST(MemorySanitizer, DISABLED_StackStressTest) { 471 for (int i = 0; i < 1000000; i++) 472 StackStressFunc(); 473} 474 475template<class T> 476void TestFloatingPoint() { 477 static volatile T v; 478 static T g[100]; 479 break_optimization(&g); 480 T *x = GetPoisoned<T>(); 481 T *y = GetPoisoned<T>(1); 482 EXPECT_POISONED(*x); 483 EXPECT_POISONED((long long)*x); 484 EXPECT_POISONED((int)*x); 485 g[0] = *x; 486 g[1] = *x + *y; 487 g[2] = *x - *y; 488 g[3] = *x * *y; 489} 490 491TEST(MemorySanitizer, FloatingPointTest) { 492 TestFloatingPoint<float>(); 493 TestFloatingPoint<double>(); 494} 495 496TEST(MemorySanitizer, DynMem) { 497 S4 x = 0; 498 S4 *y = GetPoisoned<S4>(); 499 memcpy(y, &x, g_one * sizeof(S4)); 500 EXPECT_NOT_POISONED(*y); 501} 502 503static char *DynRetTestStr; 504 505TEST(MemorySanitizer, DynRet) { 506 if (!__msan_has_dynamic_component()) return; 507 ReturnPoisoned<S8>(); 508 EXPECT_NOT_POISONED(clearenv()); 509} 510 511 512TEST(MemorySanitizer, DynRet1) { 513 if (!__msan_has_dynamic_component()) return; 514 ReturnPoisoned<S8>(); 515} 516 517struct LargeStruct { 518 S4 x[10]; 519}; 520 521NOINLINE 522LargeStruct LargeRetTest() { 523 LargeStruct res; 524 res.x[0] = *GetPoisoned<S4>(); 525 res.x[1] = *GetPoisoned<S4>(); 526 res.x[2] = *GetPoisoned<S4>(); 527 res.x[3] = *GetPoisoned<S4>(); 528 res.x[4] = *GetPoisoned<S4>(); 529 res.x[5] = *GetPoisoned<S4>(); 530 res.x[6] = *GetPoisoned<S4>(); 531 res.x[7] = *GetPoisoned<S4>(); 532 res.x[8] = *GetPoisoned<S4>(); 533 res.x[9] = *GetPoisoned<S4>(); 534 return res; 535} 536 537TEST(MemorySanitizer, strcmp) { 538 char s1[10]; 539 char s2[10]; 540 strncpy(s1, "foo", 10); 541 s2[0] = 'f'; 542 s2[1] = 'n'; 543 EXPECT_GT(strcmp(s1, s2), 0); 544 s2[1] = 'o'; 545 int res; 546 EXPECT_UMR(res = strcmp(s1, s2)); 547 EXPECT_NOT_POISONED(res); 548 EXPECT_EQ(strncmp(s1, s2, 1), 0); 549} 550 551TEST(MemorySanitizer, LargeRet) { 552 LargeStruct a = LargeRetTest(); 553 EXPECT_POISONED(a.x[0]); 554 EXPECT_POISONED(a.x[9]); 555} 556 557TEST(MemorySanitizer, strerror) { 558 char *buf = strerror(EINVAL); 559 EXPECT_NOT_POISONED(strlen(buf)); 560 buf = strerror(123456); 561 EXPECT_NOT_POISONED(strlen(buf)); 562} 563 564TEST(MemorySanitizer, strerror_r) { 565 errno = 0; 566 char buf[1000]; 567 char *res = strerror_r(EINVAL, buf, sizeof(buf)); 568 ASSERT_EQ(0, errno); 569 if (!res) res = buf; // POSIX version success. 570 EXPECT_NOT_POISONED(strlen(res)); 571} 572 573TEST(MemorySanitizer, fread) { 574 char *x = new char[32]; 575 FILE *f = fopen("/proc/self/stat", "r"); 576 assert(f); 577 fread(x, 1, 32, f); 578 EXPECT_NOT_POISONED(x[0]); 579 EXPECT_NOT_POISONED(x[16]); 580 EXPECT_NOT_POISONED(x[31]); 581 fclose(f); 582 delete x; 583} 584 585TEST(MemorySanitizer, read) { 586 char *x = new char[32]; 587 int fd = open("/proc/self/stat", O_RDONLY); 588 assert(fd > 0); 589 int sz = read(fd, x, 32); 590 assert(sz == 32); 591 EXPECT_NOT_POISONED(x[0]); 592 EXPECT_NOT_POISONED(x[16]); 593 EXPECT_NOT_POISONED(x[31]); 594 close(fd); 595 delete x; 596} 597 598TEST(MemorySanitizer, pread) { 599 char *x = new char[32]; 600 int fd = open("/proc/self/stat", O_RDONLY); 601 assert(fd > 0); 602 int sz = pread(fd, x, 32, 0); 603 assert(sz == 32); 604 EXPECT_NOT_POISONED(x[0]); 605 EXPECT_NOT_POISONED(x[16]); 606 EXPECT_NOT_POISONED(x[31]); 607 close(fd); 608 delete x; 609} 610 611TEST(MemorySanitizer, readv) { 612 char buf[2011]; 613 struct iovec iov[2]; 614 iov[0].iov_base = buf + 1; 615 iov[0].iov_len = 5; 616 iov[1].iov_base = buf + 10; 617 iov[1].iov_len = 2000; 618 int fd = open("/proc/self/stat", O_RDONLY); 619 assert(fd > 0); 620 int sz = readv(fd, iov, 2); 621 ASSERT_LT(sz, 5 + 2000); 622 ASSERT_GT(sz, iov[0].iov_len); 623 EXPECT_POISONED(buf[0]); 624 EXPECT_NOT_POISONED(buf[1]); 625 EXPECT_NOT_POISONED(buf[5]); 626 EXPECT_POISONED(buf[6]); 627 EXPECT_POISONED(buf[9]); 628 EXPECT_NOT_POISONED(buf[10]); 629 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 630 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 631 close(fd); 632} 633 634TEST(MemorySanitizer, preadv) { 635 char buf[2011]; 636 struct iovec iov[2]; 637 iov[0].iov_base = buf + 1; 638 iov[0].iov_len = 5; 639 iov[1].iov_base = buf + 10; 640 iov[1].iov_len = 2000; 641 int fd = open("/proc/self/stat", O_RDONLY); 642 assert(fd > 0); 643 int sz = preadv(fd, iov, 2, 3); 644 ASSERT_LT(sz, 5 + 2000); 645 ASSERT_GT(sz, iov[0].iov_len); 646 EXPECT_POISONED(buf[0]); 647 EXPECT_NOT_POISONED(buf[1]); 648 EXPECT_NOT_POISONED(buf[5]); 649 EXPECT_POISONED(buf[6]); 650 EXPECT_POISONED(buf[9]); 651 EXPECT_NOT_POISONED(buf[10]); 652 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); 653 EXPECT_POISONED(buf[11 + (sz - 1) - 5]); 654 close(fd); 655} 656 657// FIXME: fails now. 658TEST(MemorySanitizer, DISABLED_ioctl) { 659 struct winsize ws; 660 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); 661 EXPECT_NOT_POISONED(ws.ws_col); 662} 663 664TEST(MemorySanitizer, readlink) { 665 char *x = new char[1000]; 666 readlink("/proc/self/exe", x, 1000); 667 EXPECT_NOT_POISONED(x[0]); 668 delete [] x; 669} 670 671 672TEST(MemorySanitizer, stat) { 673 struct stat* st = new struct stat; 674 int res = stat("/proc/self/stat", st); 675 assert(!res); 676 EXPECT_NOT_POISONED(st->st_dev); 677 EXPECT_NOT_POISONED(st->st_mode); 678 EXPECT_NOT_POISONED(st->st_size); 679} 680 681TEST(MemorySanitizer, fstatat) { 682 struct stat* st = new struct stat; 683 int dirfd = open("/proc/self", O_RDONLY); 684 assert(dirfd > 0); 685 int res = fstatat(dirfd, "stat", st, 0); 686 assert(!res); 687 EXPECT_NOT_POISONED(st->st_dev); 688 EXPECT_NOT_POISONED(st->st_mode); 689 EXPECT_NOT_POISONED(st->st_size); 690 close(dirfd); 691} 692 693TEST(MemorySanitizer, statfs) { 694 struct statfs st; 695 int res = statfs("/", &st); 696 assert(!res); 697 EXPECT_NOT_POISONED(st.f_type); 698 EXPECT_NOT_POISONED(st.f_bfree); 699 EXPECT_NOT_POISONED(st.f_namelen); 700} 701 702TEST(MemorySanitizer, statvfs) { 703 struct statvfs st; 704 int res = statvfs("/", &st); 705 assert(!res); 706 EXPECT_NOT_POISONED(st.f_bsize); 707 EXPECT_NOT_POISONED(st.f_blocks); 708 EXPECT_NOT_POISONED(st.f_bfree); 709 EXPECT_NOT_POISONED(st.f_namemax); 710} 711 712TEST(MemorySanitizer, fstatvfs) { 713 struct statvfs st; 714 int fd = open("/", O_RDONLY | O_DIRECTORY); 715 int res = fstatvfs(fd, &st); 716 assert(!res); 717 EXPECT_NOT_POISONED(st.f_bsize); 718 EXPECT_NOT_POISONED(st.f_blocks); 719 EXPECT_NOT_POISONED(st.f_bfree); 720 EXPECT_NOT_POISONED(st.f_namemax); 721 close(fd); 722} 723 724TEST(MemorySanitizer, pipe) { 725 int* pipefd = new int[2]; 726 int res = pipe(pipefd); 727 assert(!res); 728 EXPECT_NOT_POISONED(pipefd[0]); 729 EXPECT_NOT_POISONED(pipefd[1]); 730 close(pipefd[0]); 731 close(pipefd[1]); 732} 733 734TEST(MemorySanitizer, pipe2) { 735 int* pipefd = new int[2]; 736 int res = pipe2(pipefd, O_NONBLOCK); 737 assert(!res); 738 EXPECT_NOT_POISONED(pipefd[0]); 739 EXPECT_NOT_POISONED(pipefd[1]); 740 close(pipefd[0]); 741 close(pipefd[1]); 742} 743 744TEST(MemorySanitizer, socketpair) { 745 int sv[2]; 746 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); 747 assert(!res); 748 EXPECT_NOT_POISONED(sv[0]); 749 EXPECT_NOT_POISONED(sv[1]); 750 close(sv[0]); 751 close(sv[1]); 752} 753 754TEST(MemorySanitizer, poll) { 755 int* pipefd = new int[2]; 756 int res = pipe(pipefd); 757 ASSERT_EQ(0, res); 758 759 char data = 42; 760 res = write(pipefd[1], &data, 1); 761 ASSERT_EQ(1, res); 762 763 pollfd fds[2]; 764 fds[0].fd = pipefd[0]; 765 fds[0].events = POLLIN; 766 fds[1].fd = pipefd[1]; 767 fds[1].events = POLLIN; 768 res = poll(fds, 2, 500); 769 ASSERT_EQ(1, res); 770 EXPECT_NOT_POISONED(fds[0].revents); 771 EXPECT_NOT_POISONED(fds[1].revents); 772 773 close(pipefd[0]); 774 close(pipefd[1]); 775} 776 777TEST(MemorySanitizer, ppoll) { 778 int* pipefd = new int[2]; 779 int res = pipe(pipefd); 780 ASSERT_EQ(0, res); 781 782 char data = 42; 783 res = write(pipefd[1], &data, 1); 784 ASSERT_EQ(1, res); 785 786 pollfd fds[2]; 787 fds[0].fd = pipefd[0]; 788 fds[0].events = POLLIN; 789 fds[1].fd = pipefd[1]; 790 fds[1].events = POLLIN; 791 sigset_t ss; 792 sigemptyset(&ss); 793 res = ppoll(fds, 2, NULL, &ss); 794 ASSERT_EQ(1, res); 795 EXPECT_NOT_POISONED(fds[0].revents); 796 EXPECT_NOT_POISONED(fds[1].revents); 797 798 close(pipefd[0]); 799 close(pipefd[1]); 800} 801 802TEST(MemorySanitizer, poll_positive) { 803 int* pipefd = new int[2]; 804 int res = pipe(pipefd); 805 ASSERT_EQ(0, res); 806 807 pollfd fds[2]; 808 fds[0].fd = pipefd[0]; 809 fds[0].events = POLLIN; 810 // fds[1].fd uninitialized 811 fds[1].events = POLLIN; 812 EXPECT_UMR(poll(fds, 2, 0)); 813 814 close(pipefd[0]); 815 close(pipefd[1]); 816} 817 818TEST(MemorySanitizer, bind_getsockname) { 819 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 820 821 struct sockaddr_in sai; 822 memset(&sai, 0, sizeof(sai)); 823 sai.sin_family = AF_UNIX; 824 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); 825 826 assert(!res); 827 char buf[200]; 828 socklen_t addrlen; 829 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); 830 831 addrlen = sizeof(buf); 832 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); 833 EXPECT_NOT_POISONED(addrlen); 834 EXPECT_NOT_POISONED(buf[0]); 835 EXPECT_NOT_POISONED(buf[addrlen - 1]); 836 EXPECT_POISONED(buf[addrlen]); 837 close(sock); 838} 839 840TEST(MemorySanitizer, accept) { 841 int listen_socket = socket(AF_INET, SOCK_STREAM, 0); 842 ASSERT_LT(0, listen_socket); 843 844 struct sockaddr_in sai; 845 memset(&sai, 0, sizeof(sai)); 846 sai.sin_family = AF_INET; 847 sai.sin_port = 0; 848 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 849 int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai)); 850 ASSERT_EQ(0, res); 851 852 res = listen(listen_socket, 1); 853 ASSERT_EQ(0, res); 854 855 socklen_t sz = sizeof(sai); 856 res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz); 857 ASSERT_EQ(0, res); 858 ASSERT_EQ(sizeof(sai), sz); 859 860 int connect_socket = socket(AF_INET, SOCK_STREAM, 0); 861 ASSERT_LT(0, connect_socket); 862 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); 863 ASSERT_EQ(0, res); 864 res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai)); 865 ASSERT_EQ(-1, res); 866 ASSERT_EQ(EINPROGRESS, errno); 867 868 __msan_poison(&sai, sizeof(sai)); 869 int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz); 870 ASSERT_LT(0, new_sock); 871 ASSERT_EQ(sizeof(sai), sz); 872 EXPECT_NOT_POISONED(sai); 873 874 __msan_poison(&sai, sizeof(sai)); 875 res = getpeername(new_sock, (struct sockaddr *)&sai, &sz); 876 ASSERT_EQ(0, res); 877 ASSERT_EQ(sizeof(sai), sz); 878 EXPECT_NOT_POISONED(sai); 879 880 close(new_sock); 881 close(connect_socket); 882 close(listen_socket); 883} 884 885TEST(MemorySanitizer, getaddrinfo) { 886 struct addrinfo *ai; 887 struct addrinfo hints; 888 memset(&hints, 0, sizeof(hints)); 889 hints.ai_family = AF_INET; 890 int res = getaddrinfo("localhost", NULL, &hints, &ai); 891 ASSERT_EQ(0, res); 892 EXPECT_NOT_POISONED(*ai); 893 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); 894 EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr); 895} 896 897TEST(MemorySanitizer, getnameinfo) { 898 struct sockaddr_in sai; 899 memset(&sai, 0, sizeof(sai)); 900 sai.sin_family = AF_INET; 901 sai.sin_port = 80; 902 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 903 char host[500]; 904 char serv[500]; 905 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, 906 sizeof(host), serv, sizeof(serv), 0); 907 ASSERT_EQ(0, res); 908 EXPECT_NOT_POISONED(host[0]); 909 EXPECT_POISONED(host[sizeof(host) - 1]); 910 911 ASSERT_NE(0, strlen(host)); 912 EXPECT_NOT_POISONED(serv[0]); 913 EXPECT_POISONED(serv[sizeof(serv) - 1]); 914 ASSERT_NE(0, strlen(serv)); 915} 916 917#define EXPECT_HOSTENT_NOT_POISONED(he) \ 918 do { \ 919 EXPECT_NOT_POISONED(*(he)); \ 920 ASSERT_NE((void *) 0, (he)->h_name); \ 921 ASSERT_NE((void *) 0, (he)->h_aliases); \ 922 ASSERT_NE((void *) 0, (he)->h_addr_list); \ 923 EXPECT_NOT_POISONED(strlen((he)->h_name)); \ 924 char **p = (he)->h_aliases; \ 925 while (*p) { \ 926 EXPECT_NOT_POISONED(strlen(*p)); \ 927 ++p; \ 928 } \ 929 char **q = (he)->h_addr_list; \ 930 while (*q) { \ 931 EXPECT_NOT_POISONED(*q[0]); \ 932 ++q; \ 933 } \ 934 EXPECT_NOT_POISONED(*q); \ 935 } while (0) 936 937TEST(MemorySanitizer, gethostent) { 938 struct hostent *he = gethostent(); 939 ASSERT_NE((void *)NULL, he); 940 EXPECT_HOSTENT_NOT_POISONED(he); 941} 942 943#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME 944 945TEST(MemorySanitizer, gethostbyname) { 946 struct hostent *he = gethostbyname("localhost"); 947 ASSERT_NE((void *)NULL, he); 948 EXPECT_HOSTENT_NOT_POISONED(he); 949} 950 951#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME 952 953TEST(MemorySanitizer, recvmsg) { 954 int server_socket = socket(AF_INET, SOCK_DGRAM, 0); 955 ASSERT_LT(0, server_socket); 956 957 struct sockaddr_in sai; 958 memset(&sai, 0, sizeof(sai)); 959 sai.sin_family = AF_INET; 960 sai.sin_port = 0; 961 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 962 int res = bind(server_socket, (struct sockaddr *)&sai, sizeof(sai)); 963 ASSERT_EQ(0, res); 964 965 socklen_t sz = sizeof(sai); 966 res = getsockname(server_socket, (struct sockaddr *)&sai, &sz); 967 ASSERT_EQ(0, res); 968 ASSERT_EQ(sizeof(sai), sz); 969 970 971 int client_socket = socket(AF_INET, SOCK_DGRAM, 0); 972 ASSERT_LT(0, client_socket); 973 974 struct sockaddr_in client_sai; 975 memset(&client_sai, 0, sizeof(client_sai)); 976 client_sai.sin_family = AF_INET; 977 client_sai.sin_port = 0; 978 client_sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 979 res = bind(client_socket, (struct sockaddr *)&client_sai, sizeof(client_sai)); 980 ASSERT_EQ(0, res); 981 982 sz = sizeof(client_sai); 983 res = getsockname(client_socket, (struct sockaddr *)&client_sai, &sz); 984 ASSERT_EQ(0, res); 985 ASSERT_EQ(sizeof(client_sai), sz); 986 987 988 const char *s = "message text"; 989 struct iovec iov; 990 iov.iov_base = (void *)s; 991 iov.iov_len = strlen(s) + 1; 992 struct msghdr msg; 993 memset(&msg, 0, sizeof(msg)); 994 msg.msg_name = &sai; 995 msg.msg_namelen = sizeof(sai); 996 msg.msg_iov = &iov; 997 msg.msg_iovlen = 1; 998 res = sendmsg(client_socket, &msg, 0); 999 ASSERT_LT(0, res); 1000 1001 1002 char buf[1000]; 1003 struct iovec recv_iov; 1004 recv_iov.iov_base = (void *)&buf; 1005 recv_iov.iov_len = sizeof(buf); 1006 struct sockaddr_in recv_sai; 1007 struct msghdr recv_msg; 1008 memset(&recv_msg, 0, sizeof(recv_msg)); 1009 recv_msg.msg_name = &recv_sai; 1010 recv_msg.msg_namelen = sizeof(recv_sai); 1011 recv_msg.msg_iov = &recv_iov; 1012 recv_msg.msg_iovlen = 1; 1013 res = recvmsg(server_socket, &recv_msg, 0); 1014 ASSERT_LT(0, res); 1015 1016 ASSERT_EQ(sizeof(recv_sai), recv_msg.msg_namelen); 1017 EXPECT_NOT_POISONED(*(struct sockaddr_in *)recv_msg.msg_name); 1018 EXPECT_STREQ(s, buf); 1019 1020 close(server_socket); 1021 close(client_socket); 1022} 1023 1024TEST(MemorySanitizer, gethostbyname2) { 1025 struct hostent *he = gethostbyname2("localhost", AF_INET); 1026 ASSERT_NE((void *)NULL, he); 1027 EXPECT_HOSTENT_NOT_POISONED(he); 1028} 1029 1030TEST(MemorySanitizer, gethostbyaddr) { 1031 in_addr_t addr = inet_addr("127.0.0.1"); 1032 EXPECT_NOT_POISONED(addr); 1033 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); 1034 ASSERT_NE((void *)NULL, he); 1035 EXPECT_HOSTENT_NOT_POISONED(he); 1036} 1037 1038TEST(MemorySanitizer, gethostent_r) { 1039 char buf[2000]; 1040 struct hostent he; 1041 struct hostent *result; 1042 int err; 1043 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); 1044 ASSERT_EQ(0, res); 1045 EXPECT_NOT_POISONED(result); 1046 ASSERT_NE((void *)NULL, result); 1047 EXPECT_HOSTENT_NOT_POISONED(result); 1048 EXPECT_NOT_POISONED(err); 1049} 1050 1051TEST(MemorySanitizer, gethostbyname_r) { 1052 char buf[2000]; 1053 struct hostent he; 1054 struct hostent *result; 1055 int err; 1056 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); 1057 ASSERT_EQ(0, res); 1058 EXPECT_NOT_POISONED(result); 1059 ASSERT_NE((void *)NULL, result); 1060 EXPECT_HOSTENT_NOT_POISONED(result); 1061 EXPECT_NOT_POISONED(err); 1062} 1063 1064TEST(MemorySanitizer, gethostbyname2_r) { 1065 char buf[2000]; 1066 struct hostent he; 1067 struct hostent *result; 1068 int err; 1069 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), 1070 &result, &err); 1071 ASSERT_EQ(0, res); 1072 EXPECT_NOT_POISONED(result); 1073 ASSERT_NE((void *)NULL, result); 1074 EXPECT_HOSTENT_NOT_POISONED(result); 1075 EXPECT_NOT_POISONED(err); 1076} 1077 1078TEST(MemorySanitizer, gethostbyaddr_r) { 1079 char buf[2000]; 1080 struct hostent he; 1081 struct hostent *result; 1082 int err; 1083 in_addr_t addr = inet_addr("127.0.0.1"); 1084 EXPECT_NOT_POISONED(addr); 1085 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), 1086 &result, &err); 1087 ASSERT_EQ(0, res); 1088 EXPECT_NOT_POISONED(result); 1089 ASSERT_NE((void *)NULL, result); 1090 EXPECT_HOSTENT_NOT_POISONED(result); 1091 EXPECT_NOT_POISONED(err); 1092} 1093 1094TEST(MemorySanitizer, getsockopt) { 1095 int sock = socket(AF_UNIX, SOCK_STREAM, 0); 1096 struct linger l[2]; 1097 socklen_t sz = sizeof(l[0]); 1098 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); 1099 ASSERT_EQ(0, res); 1100 ASSERT_EQ(sizeof(l[0]), sz); 1101 EXPECT_NOT_POISONED(l[0]); 1102 EXPECT_POISONED(*(char *)(l + 1)); 1103} 1104 1105TEST(MemorySanitizer, getcwd) { 1106 char path[PATH_MAX + 1]; 1107 char* res = getcwd(path, sizeof(path)); 1108 assert(res); 1109 EXPECT_NOT_POISONED(path[0]); 1110} 1111 1112TEST(MemorySanitizer, getcwd_gnu) { 1113 char* res = getcwd(NULL, 0); 1114 assert(res); 1115 EXPECT_NOT_POISONED(res[0]); 1116 free(res); 1117} 1118 1119TEST(MemorySanitizer, get_current_dir_name) { 1120 char* res = get_current_dir_name(); 1121 assert(res); 1122 EXPECT_NOT_POISONED(res[0]); 1123 free(res); 1124} 1125 1126TEST(MemorySanitizer, shmctl) { 1127 int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT); 1128 ASSERT_GT(id, -1); 1129 1130 struct shmid_ds ds; 1131 int res = shmctl(id, IPC_STAT, &ds); 1132 ASSERT_GT(res, -1); 1133 EXPECT_NOT_POISONED(ds); 1134 1135 struct shminfo si; 1136 res = shmctl(id, IPC_INFO, (struct shmid_ds *)&si); 1137 ASSERT_GT(res, -1); 1138 EXPECT_NOT_POISONED(si); 1139 1140 struct shm_info s_i; 1141 res = shmctl(id, SHM_INFO, (struct shmid_ds *)&s_i); 1142 ASSERT_GT(res, -1); 1143 EXPECT_NOT_POISONED(s_i); 1144 1145 res = shmctl(id, IPC_RMID, 0); 1146 ASSERT_GT(res, -1); 1147} 1148 1149TEST(MemorySanitizer, random_r) { 1150 int32_t x; 1151 char z[64]; 1152 memset(z, 0, sizeof(z)); 1153 1154 struct random_data buf; 1155 memset(&buf, 0, sizeof(buf)); 1156 1157 int res = initstate_r(0, z, sizeof(z), &buf); 1158 ASSERT_EQ(0, res); 1159 1160 res = random_r(&buf, &x); 1161 ASSERT_EQ(0, res); 1162 EXPECT_NOT_POISONED(x); 1163} 1164 1165TEST(MemorySanitizer, confstr) { 1166 char buf[3]; 1167 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1168 ASSERT_GT(res, sizeof(buf)); 1169 EXPECT_NOT_POISONED(buf[0]); 1170 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1171 1172 char buf2[1000]; 1173 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1174 ASSERT_LT(res, sizeof(buf2)); 1175 EXPECT_NOT_POISONED(buf2[0]); 1176 EXPECT_NOT_POISONED(buf2[res - 1]); 1177 EXPECT_POISONED(buf2[res]); 1178 ASSERT_EQ(res, strlen(buf2) + 1); 1179} 1180 1181TEST(MemorySanitizer, readdir) { 1182 DIR *dir = opendir("."); 1183 struct dirent *d = readdir(dir); 1184 assert(d); 1185 EXPECT_NOT_POISONED(d->d_name[0]); 1186 closedir(dir); 1187} 1188 1189TEST(MemorySanitizer, readdir_r) { 1190 DIR *dir = opendir("."); 1191 struct dirent d; 1192 struct dirent *pd; 1193 int res = readdir_r(dir, &d, &pd); 1194 assert(!res); 1195 EXPECT_NOT_POISONED(pd); 1196 EXPECT_NOT_POISONED(d.d_name[0]); 1197 closedir(dir); 1198} 1199 1200TEST(MemorySanitizer, realpath) { 1201 const char* relpath = "."; 1202 char path[PATH_MAX + 1]; 1203 char* res = realpath(relpath, path); 1204 assert(res); 1205 EXPECT_NOT_POISONED(path[0]); 1206} 1207 1208TEST(MemorySanitizer, realpath_null) { 1209 const char* relpath = "."; 1210 char* res = realpath(relpath, NULL); 1211 printf("%d, %s\n", errno, strerror(errno)); 1212 assert(res); 1213 EXPECT_NOT_POISONED(res[0]); 1214 free(res); 1215} 1216 1217TEST(MemorySanitizer, canonicalize_file_name) { 1218 const char* relpath = "."; 1219 char* res = canonicalize_file_name(relpath); 1220 assert(res); 1221 EXPECT_NOT_POISONED(res[0]); 1222 free(res); 1223} 1224 1225extern char **environ; 1226 1227TEST(MemorySanitizer, setenv) { 1228 setenv("AAA", "BBB", 1); 1229 for (char **envp = environ; *envp; ++envp) { 1230 EXPECT_NOT_POISONED(*envp); 1231 EXPECT_NOT_POISONED(*envp[0]); 1232 } 1233} 1234 1235TEST(MemorySanitizer, putenv) { 1236 char s[] = "AAA=BBB"; 1237 putenv(s); 1238 for (char **envp = environ; *envp; ++envp) { 1239 EXPECT_NOT_POISONED(*envp); 1240 EXPECT_NOT_POISONED(*envp[0]); 1241 } 1242} 1243 1244TEST(MemorySanitizer, memcpy) { 1245 char* x = new char[2]; 1246 char* y = new char[2]; 1247 x[0] = 1; 1248 x[1] = *GetPoisoned<char>(); 1249 memcpy(y, x, 2); 1250 EXPECT_NOT_POISONED(y[0]); 1251 EXPECT_POISONED(y[1]); 1252} 1253 1254void TestUnalignedMemcpy(int left, int right, bool src_is_aligned) { 1255 const int sz = 20; 1256 char *dst = (char *)malloc(sz); 1257 U4 origin = __msan_get_origin(dst); 1258 1259 char *src = (char *)malloc(sz); 1260 memset(src, 0, sz); 1261 1262 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); 1263 for (int i = 0; i < left; ++i) 1264 EXPECT_POISONED_O(dst[i], origin); 1265 for (int i = 0; i < right; ++i) 1266 EXPECT_POISONED_O(dst[sz - i - 1], origin); 1267 EXPECT_NOT_POISONED(dst[left]); 1268 EXPECT_NOT_POISONED(dst[sz - right - 1]); 1269 1270 free(dst); 1271 free(src); 1272} 1273 1274TEST(MemorySanitizer, memcpy_unaligned) { 1275 for (int i = 0; i < 4; ++i) { 1276 for (int j = 0; j < 4; ++j) { 1277 TestUnalignedMemcpy(i, j, true); 1278 TestUnalignedMemcpy(i, j, false); 1279 } 1280 } 1281} 1282 1283TEST(MemorySanitizer, memmove) { 1284 char* x = new char[2]; 1285 char* y = new char[2]; 1286 x[0] = 1; 1287 x[1] = *GetPoisoned<char>(); 1288 memmove(y, x, 2); 1289 EXPECT_NOT_POISONED(y[0]); 1290 EXPECT_POISONED(y[1]); 1291} 1292 1293TEST(MemorySanitizer, bcopy) { 1294 char* x = new char[2]; 1295 char* y = new char[2]; 1296 x[0] = 1; 1297 x[1] = *GetPoisoned<char>(); 1298 bcopy(x, y, 2); 1299 EXPECT_NOT_POISONED(y[0]); 1300 EXPECT_POISONED(y[1]); 1301} 1302 1303TEST(MemorySanitizer, strdup) { 1304 char buf[4] = "abc"; 1305 __msan_poison(buf + 2, sizeof(*buf)); 1306 char *x = strdup(buf); 1307 EXPECT_NOT_POISONED(x[0]); 1308 EXPECT_NOT_POISONED(x[1]); 1309 EXPECT_POISONED(x[2]); 1310 EXPECT_NOT_POISONED(x[3]); 1311 free(x); 1312} 1313 1314TEST(MemorySanitizer, strndup) { 1315 char buf[4] = "abc"; 1316 __msan_poison(buf + 2, sizeof(*buf)); 1317 char *x = strndup(buf, 3); 1318 EXPECT_NOT_POISONED(x[0]); 1319 EXPECT_NOT_POISONED(x[1]); 1320 EXPECT_POISONED(x[2]); 1321 EXPECT_NOT_POISONED(x[3]); 1322 free(x); 1323} 1324 1325TEST(MemorySanitizer, strndup_short) { 1326 char buf[4] = "abc"; 1327 __msan_poison(buf + 1, sizeof(*buf)); 1328 __msan_poison(buf + 2, sizeof(*buf)); 1329 char *x = strndup(buf, 2); 1330 EXPECT_NOT_POISONED(x[0]); 1331 EXPECT_POISONED(x[1]); 1332 EXPECT_NOT_POISONED(x[2]); 1333 free(x); 1334} 1335 1336 1337template<class T, int size> 1338void TestOverlapMemmove() { 1339 T *x = new T[size]; 1340 assert(size >= 3); 1341 x[2] = 0; 1342 memmove(x, x + 1, (size - 1) * sizeof(T)); 1343 EXPECT_NOT_POISONED(x[1]); 1344 if (!__msan_has_dynamic_component()) { 1345 // FIXME: under DR we will lose this information 1346 // because accesses in memmove will unpoisin the shadow. 1347 // We need to use our own memove implementation instead of libc's. 1348 EXPECT_POISONED(x[0]); 1349 EXPECT_POISONED(x[2]); 1350 } 1351 delete [] x; 1352} 1353 1354TEST(MemorySanitizer, overlap_memmove) { 1355 TestOverlapMemmove<U1, 10>(); 1356 TestOverlapMemmove<U1, 1000>(); 1357 TestOverlapMemmove<U8, 4>(); 1358 TestOverlapMemmove<U8, 1000>(); 1359} 1360 1361TEST(MemorySanitizer, strcpy) { // NOLINT 1362 char* x = new char[3]; 1363 char* y = new char[3]; 1364 x[0] = 'a'; 1365 x[1] = *GetPoisoned<char>(1, 1); 1366 x[2] = 0; 1367 strcpy(y, x); // NOLINT 1368 EXPECT_NOT_POISONED(y[0]); 1369 EXPECT_POISONED(y[1]); 1370 EXPECT_NOT_POISONED(y[2]); 1371} 1372 1373TEST(MemorySanitizer, strncpy) { // NOLINT 1374 char* x = new char[3]; 1375 char* y = new char[3]; 1376 x[0] = 'a'; 1377 x[1] = *GetPoisoned<char>(1, 1); 1378 x[2] = 0; 1379 strncpy(y, x, 2); // NOLINT 1380 EXPECT_NOT_POISONED(y[0]); 1381 EXPECT_POISONED(y[1]); 1382 EXPECT_POISONED(y[2]); 1383} 1384 1385TEST(MemorySanitizer, stpcpy) { // NOLINT 1386 char* x = new char[3]; 1387 char* y = new char[3]; 1388 x[0] = 'a'; 1389 x[1] = *GetPoisoned<char>(1, 1); 1390 x[2] = 0; 1391 char *res = stpcpy(y, x); // NOLINT 1392 ASSERT_EQ(res, y + 2); 1393 EXPECT_NOT_POISONED(y[0]); 1394 EXPECT_POISONED(y[1]); 1395 EXPECT_NOT_POISONED(y[2]); 1396} 1397 1398TEST(MemorySanitizer, strtol) { 1399 char *e; 1400 assert(1 == strtol("1", &e, 10)); 1401 EXPECT_NOT_POISONED((S8) e); 1402} 1403 1404TEST(MemorySanitizer, strtoll) { 1405 char *e; 1406 assert(1 == strtoll("1", &e, 10)); 1407 EXPECT_NOT_POISONED((S8) e); 1408} 1409 1410TEST(MemorySanitizer, strtoul) { 1411 char *e; 1412 assert(1 == strtoul("1", &e, 10)); 1413 EXPECT_NOT_POISONED((S8) e); 1414} 1415 1416TEST(MemorySanitizer, strtoull) { 1417 char *e; 1418 assert(1 == strtoull("1", &e, 10)); 1419 EXPECT_NOT_POISONED((S8) e); 1420} 1421 1422TEST(MemorySanitizer, strtoimax) { 1423 char *e; 1424 assert(1 == strtoimax("1", &e, 10)); 1425 EXPECT_NOT_POISONED((S8) e); 1426} 1427 1428TEST(MemorySanitizer, strtoumax) { 1429 char *e; 1430 assert(1 == strtoumax("1", &e, 10)); 1431 EXPECT_NOT_POISONED((S8) e); 1432} 1433 1434TEST(MemorySanitizer, strtod) { 1435 char *e; 1436 assert(0 != strtod("1.5", &e)); 1437 EXPECT_NOT_POISONED((S8) e); 1438} 1439 1440#ifdef __GLIBC__ 1441extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1442TEST(MemorySanitizer, __strtod_l) { 1443 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); 1444 char *e; 1445 assert(0 != __strtod_l("1.5", &e, loc)); 1446 EXPECT_NOT_POISONED((S8) e); 1447 freelocale(loc); 1448} 1449#endif // __GLIBC__ 1450 1451TEST(MemorySanitizer, strtof) { 1452 char *e; 1453 assert(0 != strtof("1.5", &e)); 1454 EXPECT_NOT_POISONED((S8) e); 1455} 1456 1457TEST(MemorySanitizer, strtold) { 1458 char *e; 1459 assert(0 != strtold("1.5", &e)); 1460 EXPECT_NOT_POISONED((S8) e); 1461} 1462 1463TEST(MemorySanitizer, modf) { 1464 double x, y; 1465 x = modf(2.1, &y); 1466 EXPECT_NOT_POISONED(y); 1467} 1468 1469TEST(MemorySanitizer, modff) { 1470 float x, y; 1471 x = modff(2.1, &y); 1472 EXPECT_NOT_POISONED(y); 1473} 1474 1475TEST(MemorySanitizer, modfl) { 1476 long double x, y; 1477 x = modfl(2.1, &y); 1478 EXPECT_NOT_POISONED(y); 1479} 1480 1481TEST(MemorySanitizer, sprintf) { // NOLINT 1482 char buff[10]; 1483 break_optimization(buff); 1484 EXPECT_POISONED(buff[0]); 1485 int res = sprintf(buff, "%d", 1234567); // NOLINT 1486 assert(res == 7); 1487 assert(buff[0] == '1'); 1488 assert(buff[1] == '2'); 1489 assert(buff[2] == '3'); 1490 assert(buff[6] == '7'); 1491 assert(buff[7] == 0); 1492 EXPECT_POISONED(buff[8]); 1493} 1494 1495TEST(MemorySanitizer, snprintf) { 1496 char buff[10]; 1497 break_optimization(buff); 1498 EXPECT_POISONED(buff[0]); 1499 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1500 assert(res == 7); 1501 assert(buff[0] == '1'); 1502 assert(buff[1] == '2'); 1503 assert(buff[2] == '3'); 1504 assert(buff[6] == '7'); 1505 assert(buff[7] == 0); 1506 EXPECT_POISONED(buff[8]); 1507} 1508 1509TEST(MemorySanitizer, swprintf) { 1510 wchar_t buff[10]; 1511 assert(sizeof(wchar_t) == 4); 1512 break_optimization(buff); 1513 EXPECT_POISONED(buff[0]); 1514 int res = swprintf(buff, 9, L"%d", 1234567); 1515 assert(res == 7); 1516 assert(buff[0] == '1'); 1517 assert(buff[1] == '2'); 1518 assert(buff[2] == '3'); 1519 assert(buff[6] == '7'); 1520 assert(buff[7] == 0); 1521 EXPECT_POISONED(buff[8]); 1522} 1523 1524TEST(MemorySanitizer, asprintf) { // NOLINT 1525 char *pbuf; 1526 EXPECT_POISONED(pbuf); 1527 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1528 assert(res == 7); 1529 EXPECT_NOT_POISONED(pbuf); 1530 assert(pbuf[0] == '1'); 1531 assert(pbuf[1] == '2'); 1532 assert(pbuf[2] == '3'); 1533 assert(pbuf[6] == '7'); 1534 assert(pbuf[7] == 0); 1535 free(pbuf); 1536} 1537 1538TEST(MemorySanitizer, mbstowcs) { 1539 const char *x = "abc"; 1540 wchar_t buff[10]; 1541 int res = mbstowcs(buff, x, 2); 1542 EXPECT_EQ(2, res); 1543 EXPECT_EQ(L'a', buff[0]); 1544 EXPECT_EQ(L'b', buff[1]); 1545 EXPECT_POISONED(buff[2]); 1546 res = mbstowcs(buff, x, 10); 1547 EXPECT_EQ(3, res); 1548 EXPECT_NOT_POISONED(buff[3]); 1549} 1550 1551TEST(MemorySanitizer, wcstombs) { 1552 const wchar_t *x = L"abc"; 1553 char buff[10]; 1554 int res = wcstombs(buff, x, 4); 1555 EXPECT_EQ(res, 3); 1556 EXPECT_EQ(buff[0], 'a'); 1557 EXPECT_EQ(buff[1], 'b'); 1558 EXPECT_EQ(buff[2], 'c'); 1559} 1560 1561TEST(MemorySanitizer, wcsrtombs) { 1562 const wchar_t *x = L"abc"; 1563 const wchar_t *p = x; 1564 char buff[10]; 1565 mbstate_t mbs; 1566 memset(&mbs, 0, sizeof(mbs)); 1567 int res = wcsrtombs(buff, &p, 4, &mbs); 1568 EXPECT_EQ(res, 3); 1569 EXPECT_EQ(buff[0], 'a'); 1570 EXPECT_EQ(buff[1], 'b'); 1571 EXPECT_EQ(buff[2], 'c'); 1572 EXPECT_EQ(buff[3], '\0'); 1573 EXPECT_POISONED(buff[4]); 1574} 1575 1576TEST(MemorySanitizer, wcsnrtombs) { 1577 const wchar_t *x = L"abc"; 1578 const wchar_t *p = x; 1579 char buff[10]; 1580 mbstate_t mbs; 1581 memset(&mbs, 0, sizeof(mbs)); 1582 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1583 EXPECT_EQ(res, 2); 1584 EXPECT_EQ(buff[0], 'a'); 1585 EXPECT_EQ(buff[1], 'b'); 1586 EXPECT_POISONED(buff[2]); 1587} 1588 1589TEST(MemorySanitizer, mbtowc) { 1590 const char *x = "abc"; 1591 wchar_t wx; 1592 int res = mbtowc(&wx, x, 3); 1593 EXPECT_GT(res, 0); 1594 EXPECT_NOT_POISONED(wx); 1595} 1596 1597TEST(MemorySanitizer, mbrtowc) { 1598 const char *x = "abc"; 1599 wchar_t wx; 1600 mbstate_t mbs; 1601 memset(&mbs, 0, sizeof(mbs)); 1602 int res = mbrtowc(&wx, x, 3, &mbs); 1603 EXPECT_GT(res, 0); 1604 EXPECT_NOT_POISONED(wx); 1605} 1606 1607TEST(MemorySanitizer, gettimeofday) { 1608 struct timeval tv; 1609 struct timezone tz; 1610 break_optimization(&tv); 1611 break_optimization(&tz); 1612 assert(sizeof(tv) == 16); 1613 assert(sizeof(tz) == 8); 1614 EXPECT_POISONED(tv.tv_sec); 1615 EXPECT_POISONED(tv.tv_usec); 1616 EXPECT_POISONED(tz.tz_minuteswest); 1617 EXPECT_POISONED(tz.tz_dsttime); 1618 assert(0 == gettimeofday(&tv, &tz)); 1619 EXPECT_NOT_POISONED(tv.tv_sec); 1620 EXPECT_NOT_POISONED(tv.tv_usec); 1621 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1622 EXPECT_NOT_POISONED(tz.tz_dsttime); 1623} 1624 1625TEST(MemorySanitizer, clock_gettime) { 1626 struct timespec tp; 1627 EXPECT_POISONED(tp.tv_sec); 1628 EXPECT_POISONED(tp.tv_nsec); 1629 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1630 EXPECT_NOT_POISONED(tp.tv_sec); 1631 EXPECT_NOT_POISONED(tp.tv_nsec); 1632} 1633 1634TEST(MemorySanitizer, clock_getres) { 1635 struct timespec tp; 1636 EXPECT_POISONED(tp.tv_sec); 1637 EXPECT_POISONED(tp.tv_nsec); 1638 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1639 EXPECT_POISONED(tp.tv_sec); 1640 EXPECT_POISONED(tp.tv_nsec); 1641 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1642 EXPECT_NOT_POISONED(tp.tv_sec); 1643 EXPECT_NOT_POISONED(tp.tv_nsec); 1644} 1645 1646TEST(MemorySanitizer, getitimer) { 1647 struct itimerval it1, it2; 1648 int res; 1649 EXPECT_POISONED(it1.it_interval.tv_sec); 1650 EXPECT_POISONED(it1.it_interval.tv_usec); 1651 EXPECT_POISONED(it1.it_value.tv_sec); 1652 EXPECT_POISONED(it1.it_value.tv_usec); 1653 res = getitimer(ITIMER_VIRTUAL, &it1); 1654 assert(!res); 1655 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1656 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1657 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1658 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1659 1660 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1661 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1662 1663 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1664 assert(!res); 1665 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1666 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1667 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1668 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1669 1670 // Check that old_value can be 0, and disable the timer. 1671 memset(&it1, 0, sizeof(it1)); 1672 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1673 assert(!res); 1674} 1675 1676TEST(MemorySanitizer, setitimer_null) { 1677 setitimer(ITIMER_VIRTUAL, 0, 0); 1678 // Not testing the return value, since it the behaviour seems to differ 1679 // between libc implementations and POSIX. 1680 // Should never crash, though. 1681} 1682 1683TEST(MemorySanitizer, time) { 1684 time_t t; 1685 EXPECT_POISONED(t); 1686 time_t t2 = time(&t); 1687 assert(t2 != (time_t)-1); 1688 EXPECT_NOT_POISONED(t); 1689} 1690 1691TEST(MemorySanitizer, localtime) { 1692 time_t t = 123; 1693 struct tm *time = localtime(&t); 1694 assert(time != 0); 1695 EXPECT_NOT_POISONED(time->tm_sec); 1696 EXPECT_NOT_POISONED(time->tm_hour); 1697 EXPECT_NOT_POISONED(time->tm_year); 1698 EXPECT_NOT_POISONED(time->tm_isdst); 1699 EXPECT_NE(0, strlen(time->tm_zone)); 1700} 1701 1702TEST(MemorySanitizer, localtime_r) { 1703 time_t t = 123; 1704 struct tm time; 1705 struct tm *res = localtime_r(&t, &time); 1706 assert(res != 0); 1707 EXPECT_NOT_POISONED(time.tm_sec); 1708 EXPECT_NOT_POISONED(time.tm_hour); 1709 EXPECT_NOT_POISONED(time.tm_year); 1710 EXPECT_NOT_POISONED(time.tm_isdst); 1711 EXPECT_NE(0, strlen(time.tm_zone)); 1712} 1713 1714TEST(MemorySanitizer, getmntent) { 1715 FILE *fp = setmntent("/etc/fstab", "r"); 1716 struct mntent *mnt = getmntent(fp); 1717 ASSERT_NE((void *)0, mnt); 1718 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1719 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1720 ASSERT_NE(0, strlen(mnt->mnt_type)); 1721 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1722 EXPECT_NOT_POISONED(mnt->mnt_freq); 1723 EXPECT_NOT_POISONED(mnt->mnt_passno); 1724 fclose(fp); 1725} 1726 1727TEST(MemorySanitizer, getmntent_r) { 1728 FILE *fp = setmntent("/etc/fstab", "r"); 1729 struct mntent mntbuf; 1730 char buf[1000]; 1731 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 1732 ASSERT_NE((void *)0, mnt); 1733 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1734 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1735 ASSERT_NE(0, strlen(mnt->mnt_type)); 1736 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1737 EXPECT_NOT_POISONED(mnt->mnt_freq); 1738 EXPECT_NOT_POISONED(mnt->mnt_passno); 1739 fclose(fp); 1740} 1741 1742TEST(MemorySanitizer, ether) { 1743 const char *asc = "11:22:33:44:55:66"; 1744 struct ether_addr *paddr = ether_aton(asc); 1745 EXPECT_NOT_POISONED(*paddr); 1746 1747 struct ether_addr addr; 1748 paddr = ether_aton_r(asc, &addr); 1749 ASSERT_EQ(paddr, &addr); 1750 EXPECT_NOT_POISONED(addr); 1751 1752 char *s = ether_ntoa(&addr); 1753 ASSERT_NE(0, strlen(s)); 1754 1755 char buf[100]; 1756 s = ether_ntoa_r(&addr, buf); 1757 ASSERT_EQ(s, buf); 1758 ASSERT_NE(0, strlen(buf)); 1759} 1760 1761TEST(MemorySanitizer, mmap) { 1762 const int size = 4096; 1763 void *p1, *p2; 1764 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1765 __msan_poison(p1, size); 1766 munmap(p1, size); 1767 for (int i = 0; i < 1000; i++) { 1768 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1769 if (p2 == p1) 1770 break; 1771 else 1772 munmap(p2, size); 1773 } 1774 if (p1 == p2) { 1775 EXPECT_NOT_POISONED(*(char*)p2); 1776 munmap(p2, size); 1777 } 1778} 1779 1780// FIXME: enable and add ecvt. 1781// FIXME: check why msandr does nt handle fcvt. 1782TEST(MemorySanitizer, fcvt) { 1783 int a, b; 1784 break_optimization(&a); 1785 break_optimization(&b); 1786 EXPECT_POISONED(a); 1787 EXPECT_POISONED(b); 1788 char *str = fcvt(12345.6789, 10, &a, &b); 1789 EXPECT_NOT_POISONED(a); 1790 EXPECT_NOT_POISONED(b); 1791} 1792 1793TEST(MemorySanitizer, frexp) { 1794 int x; 1795 x = *GetPoisoned<int>(); 1796 double r = frexp(1.1, &x); 1797 EXPECT_NOT_POISONED(r); 1798 EXPECT_NOT_POISONED(x); 1799 1800 x = *GetPoisoned<int>(); 1801 float rf = frexpf(1.1, &x); 1802 EXPECT_NOT_POISONED(rf); 1803 EXPECT_NOT_POISONED(x); 1804 1805 x = *GetPoisoned<int>(); 1806 double rl = frexpl(1.1, &x); 1807 EXPECT_NOT_POISONED(rl); 1808 EXPECT_NOT_POISONED(x); 1809} 1810 1811namespace { 1812 1813static int cnt; 1814 1815void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1816 assert(signo == SIGPROF); 1817 assert(si); 1818 EXPECT_NOT_POISONED(si->si_errno); 1819 EXPECT_NOT_POISONED(si->si_pid); 1820#if __linux__ 1821# if defined(__x86_64__) 1822 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1823# elif defined(__i386__) 1824 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1825# endif 1826#endif 1827 ++cnt; 1828} 1829 1830TEST(MemorySanitizer, sigaction) { 1831 struct sigaction act = {}; 1832 struct sigaction oldact = {}; 1833 struct sigaction origact = {}; 1834 1835 sigaction(SIGPROF, 0, &origact); 1836 1837 act.sa_flags |= SA_SIGINFO; 1838 act.sa_sigaction = &SigactionHandler; 1839 sigaction(SIGPROF, &act, 0); 1840 1841 kill(getpid(), SIGPROF); 1842 1843 act.sa_flags &= ~SA_SIGINFO; 1844 act.sa_handler = SIG_DFL; 1845 sigaction(SIGPROF, &act, 0); 1846 1847 act.sa_flags &= ~SA_SIGINFO; 1848 act.sa_handler = SIG_IGN; 1849 sigaction(SIGPROF, &act, &oldact); 1850 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1851 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1852 kill(getpid(), SIGPROF); 1853 1854 act.sa_flags |= SA_SIGINFO; 1855 act.sa_sigaction = &SigactionHandler; 1856 sigaction(SIGPROF, &act, &oldact); 1857 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1858 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1859 kill(getpid(), SIGPROF); 1860 1861 act.sa_flags &= ~SA_SIGINFO; 1862 act.sa_handler = SIG_DFL; 1863 sigaction(SIGPROF, &act, &oldact); 1864 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1865 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1866 EXPECT_EQ(2, cnt); 1867 1868 sigaction(SIGPROF, &origact, 0); 1869} 1870 1871} // namespace 1872 1873 1874TEST(MemorySanitizer, sigemptyset) { 1875 sigset_t s; 1876 EXPECT_POISONED(s); 1877 int res = sigemptyset(&s); 1878 ASSERT_EQ(0, res); 1879 EXPECT_NOT_POISONED(s); 1880} 1881 1882TEST(MemorySanitizer, sigfillset) { 1883 sigset_t s; 1884 EXPECT_POISONED(s); 1885 int res = sigfillset(&s); 1886 ASSERT_EQ(0, res); 1887 EXPECT_NOT_POISONED(s); 1888} 1889 1890TEST(MemorySanitizer, sigpending) { 1891 sigset_t s; 1892 EXPECT_POISONED(s); 1893 int res = sigpending(&s); 1894 ASSERT_EQ(0, res); 1895 EXPECT_NOT_POISONED(s); 1896} 1897 1898TEST(MemorySanitizer, sigprocmask) { 1899 sigset_t s; 1900 EXPECT_POISONED(s); 1901 int res = sigprocmask(SIG_BLOCK, 0, &s); 1902 ASSERT_EQ(0, res); 1903 EXPECT_NOT_POISONED(s); 1904} 1905 1906struct StructWithDtor { 1907 ~StructWithDtor(); 1908}; 1909 1910NOINLINE StructWithDtor::~StructWithDtor() { 1911 break_optimization(0); 1912} 1913 1914TEST(MemorySanitizer, Invoke) { 1915 StructWithDtor s; // Will cause the calls to become invokes. 1916 EXPECT_NOT_POISONED(0); 1917 EXPECT_POISONED(*GetPoisoned<int>()); 1918 EXPECT_NOT_POISONED(0); 1919 EXPECT_POISONED(*GetPoisoned<int>()); 1920 EXPECT_POISONED(ReturnPoisoned<S4>()); 1921} 1922 1923TEST(MemorySanitizer, ptrtoint) { 1924 // Test that shadow is propagated through pointer-to-integer conversion. 1925 void* p = (void*)0xABCD; 1926 __msan_poison(((char*)&p) + 1, sizeof(p)); 1927 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1928 1929 void* q = (void*)0xABCD; 1930 __msan_poison(&q, sizeof(q) - 1); 1931 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1932} 1933 1934static void vaargsfn2(int guard, ...) { 1935 va_list vl; 1936 va_start(vl, guard); 1937 EXPECT_NOT_POISONED(va_arg(vl, int)); 1938 EXPECT_NOT_POISONED(va_arg(vl, int)); 1939 EXPECT_NOT_POISONED(va_arg(vl, int)); 1940 EXPECT_POISONED(va_arg(vl, double)); 1941 va_end(vl); 1942} 1943 1944static void vaargsfn(int guard, ...) { 1945 va_list vl; 1946 va_start(vl, guard); 1947 EXPECT_NOT_POISONED(va_arg(vl, int)); 1948 EXPECT_POISONED(va_arg(vl, int)); 1949 // The following call will overwrite __msan_param_tls. 1950 // Checks after it test that arg shadow was somehow saved across the call. 1951 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1952 EXPECT_NOT_POISONED(va_arg(vl, int)); 1953 EXPECT_POISONED(va_arg(vl, int)); 1954 va_end(vl); 1955} 1956 1957TEST(MemorySanitizer, VAArgTest) { 1958 int* x = GetPoisoned<int>(); 1959 int* y = GetPoisoned<int>(4); 1960 vaargsfn(1, 13, *x, 42, *y); 1961} 1962 1963static void vaargsfn_many(int guard, ...) { 1964 va_list vl; 1965 va_start(vl, guard); 1966 EXPECT_NOT_POISONED(va_arg(vl, int)); 1967 EXPECT_POISONED(va_arg(vl, int)); 1968 EXPECT_NOT_POISONED(va_arg(vl, int)); 1969 EXPECT_NOT_POISONED(va_arg(vl, int)); 1970 EXPECT_NOT_POISONED(va_arg(vl, int)); 1971 EXPECT_NOT_POISONED(va_arg(vl, int)); 1972 EXPECT_NOT_POISONED(va_arg(vl, int)); 1973 EXPECT_NOT_POISONED(va_arg(vl, int)); 1974 EXPECT_NOT_POISONED(va_arg(vl, int)); 1975 EXPECT_POISONED(va_arg(vl, int)); 1976 va_end(vl); 1977} 1978 1979TEST(MemorySanitizer, VAArgManyTest) { 1980 int* x = GetPoisoned<int>(); 1981 int* y = GetPoisoned<int>(4); 1982 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1983} 1984 1985static void vaargsfn_pass2(va_list vl) { 1986 EXPECT_NOT_POISONED(va_arg(vl, int)); 1987 EXPECT_NOT_POISONED(va_arg(vl, int)); 1988 EXPECT_POISONED(va_arg(vl, int)); 1989} 1990 1991static void vaargsfn_pass(int guard, ...) { 1992 va_list vl; 1993 va_start(vl, guard); 1994 EXPECT_POISONED(va_arg(vl, int)); 1995 vaargsfn_pass2(vl); 1996 va_end(vl); 1997} 1998 1999TEST(MemorySanitizer, VAArgPass) { 2000 int* x = GetPoisoned<int>(); 2001 int* y = GetPoisoned<int>(4); 2002 vaargsfn_pass(1, *x, 2, 3, *y); 2003} 2004 2005static void vaargsfn_copy2(va_list vl) { 2006 EXPECT_NOT_POISONED(va_arg(vl, int)); 2007 EXPECT_POISONED(va_arg(vl, int)); 2008} 2009 2010static void vaargsfn_copy(int guard, ...) { 2011 va_list vl; 2012 va_start(vl, guard); 2013 EXPECT_NOT_POISONED(va_arg(vl, int)); 2014 EXPECT_POISONED(va_arg(vl, int)); 2015 va_list vl2; 2016 va_copy(vl2, vl); 2017 vaargsfn_copy2(vl2); 2018 EXPECT_NOT_POISONED(va_arg(vl, int)); 2019 EXPECT_POISONED(va_arg(vl, int)); 2020 va_end(vl); 2021} 2022 2023TEST(MemorySanitizer, VAArgCopy) { 2024 int* x = GetPoisoned<int>(); 2025 int* y = GetPoisoned<int>(4); 2026 vaargsfn_copy(1, 2, *x, 3, *y); 2027} 2028 2029static void vaargsfn_ptr(int guard, ...) { 2030 va_list vl; 2031 va_start(vl, guard); 2032 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2033 EXPECT_POISONED(va_arg(vl, int*)); 2034 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2035 EXPECT_POISONED(va_arg(vl, double*)); 2036 va_end(vl); 2037} 2038 2039TEST(MemorySanitizer, VAArgPtr) { 2040 int** x = GetPoisoned<int*>(); 2041 double** y = GetPoisoned<double*>(8); 2042 int z; 2043 vaargsfn_ptr(1, &z, *x, &z, *y); 2044} 2045 2046static void vaargsfn_overflow(int guard, ...) { 2047 va_list vl; 2048 va_start(vl, guard); 2049 EXPECT_NOT_POISONED(va_arg(vl, int)); 2050 EXPECT_NOT_POISONED(va_arg(vl, int)); 2051 EXPECT_POISONED(va_arg(vl, int)); 2052 EXPECT_NOT_POISONED(va_arg(vl, int)); 2053 EXPECT_NOT_POISONED(va_arg(vl, int)); 2054 EXPECT_NOT_POISONED(va_arg(vl, int)); 2055 2056 EXPECT_NOT_POISONED(va_arg(vl, double)); 2057 EXPECT_NOT_POISONED(va_arg(vl, double)); 2058 EXPECT_NOT_POISONED(va_arg(vl, double)); 2059 EXPECT_POISONED(va_arg(vl, double)); 2060 EXPECT_NOT_POISONED(va_arg(vl, double)); 2061 EXPECT_POISONED(va_arg(vl, int*)); 2062 EXPECT_NOT_POISONED(va_arg(vl, double)); 2063 EXPECT_NOT_POISONED(va_arg(vl, double)); 2064 2065 EXPECT_POISONED(va_arg(vl, int)); 2066 EXPECT_POISONED(va_arg(vl, double)); 2067 EXPECT_POISONED(va_arg(vl, int*)); 2068 2069 EXPECT_NOT_POISONED(va_arg(vl, int)); 2070 EXPECT_NOT_POISONED(va_arg(vl, double)); 2071 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2072 2073 EXPECT_POISONED(va_arg(vl, int)); 2074 EXPECT_POISONED(va_arg(vl, double)); 2075 EXPECT_POISONED(va_arg(vl, int*)); 2076 2077 va_end(vl); 2078} 2079 2080TEST(MemorySanitizer, VAArgOverflow) { 2081 int* x = GetPoisoned<int>(); 2082 double* y = GetPoisoned<double>(8); 2083 int** p = GetPoisoned<int*>(16); 2084 int z; 2085 vaargsfn_overflow(1, 2086 1, 2, *x, 4, 5, 6, 2087 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2088 // the following args will overflow for sure 2089 *x, *y, *p, 2090 7, 9.9, &z, 2091 *x, *y, *p); 2092} 2093 2094static void vaargsfn_tlsoverwrite2(int guard, ...) { 2095 va_list vl; 2096 va_start(vl, guard); 2097 for (int i = 0; i < 20; ++i) 2098 EXPECT_NOT_POISONED(va_arg(vl, int)); 2099 va_end(vl); 2100} 2101 2102static void vaargsfn_tlsoverwrite(int guard, ...) { 2103 // This call will overwrite TLS contents unless it's backed up somewhere. 2104 vaargsfn_tlsoverwrite2(2, 2105 42, 42, 42, 42, 42, 2106 42, 42, 42, 42, 42, 2107 42, 42, 42, 42, 42, 2108 42, 42, 42, 42, 42); // 20x 2109 va_list vl; 2110 va_start(vl, guard); 2111 for (int i = 0; i < 20; ++i) 2112 EXPECT_POISONED(va_arg(vl, int)); 2113 va_end(vl); 2114} 2115 2116TEST(MemorySanitizer, VAArgTLSOverwrite) { 2117 int* x = GetPoisoned<int>(); 2118 vaargsfn_tlsoverwrite(1, 2119 *x, *x, *x, *x, *x, 2120 *x, *x, *x, *x, *x, 2121 *x, *x, *x, *x, *x, 2122 *x, *x, *x, *x, *x); // 20x 2123 2124} 2125 2126struct StructByVal { 2127 int a, b, c, d, e, f; 2128}; 2129 2130NOINLINE void StructByValTestFunc(struct StructByVal s) { 2131 EXPECT_NOT_POISONED(s.a); 2132 EXPECT_POISONED(s.b); 2133 EXPECT_NOT_POISONED(s.c); 2134 EXPECT_POISONED(s.d); 2135 EXPECT_NOT_POISONED(s.e); 2136 EXPECT_POISONED(s.f); 2137} 2138 2139NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2140 StructByValTestFunc(s); 2141} 2142 2143NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2144 StructByValTestFunc(s); 2145} 2146 2147TEST(MemorySanitizer, StructByVal) { 2148 // Large aggregates are passed as "byval" pointer argument in LLVM. 2149 struct StructByVal s; 2150 s.a = 1; 2151 s.b = *GetPoisoned<int>(); 2152 s.c = 2; 2153 s.d = *GetPoisoned<int>(); 2154 s.e = 3; 2155 s.f = *GetPoisoned<int>(); 2156 StructByValTestFunc(s); 2157 StructByValTestFunc1(s); 2158 StructByValTestFunc2(0, s); 2159} 2160 2161 2162#if MSAN_HAS_M128 2163NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2164NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2165TEST(MemorySanitizer, m128) { 2166 __m128i a = _mm_set1_epi16(0x1234); 2167 __m128i b = _mm_set1_epi16(0x7890); 2168 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2169 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2170} 2171// FIXME: add more tests for __m128i. 2172#endif // MSAN_HAS_M128 2173 2174// We should not complain when copying this poisoned hole. 2175struct StructWithHole { 2176 U4 a; 2177 // 4-byte hole. 2178 U8 b; 2179}; 2180 2181NOINLINE StructWithHole ReturnStructWithHole() { 2182 StructWithHole res; 2183 __msan_poison(&res, sizeof(res)); 2184 res.a = 1; 2185 res.b = 2; 2186 return res; 2187} 2188 2189TEST(MemorySanitizer, StructWithHole) { 2190 StructWithHole a = ReturnStructWithHole(); 2191 break_optimization(&a); 2192} 2193 2194template <class T> 2195NOINLINE T ReturnStruct() { 2196 T res; 2197 __msan_poison(&res, sizeof(res)); 2198 res.a = 1; 2199 return res; 2200} 2201 2202template <class T> 2203NOINLINE void TestReturnStruct() { 2204 T s1 = ReturnStruct<T>(); 2205 EXPECT_NOT_POISONED(s1.a); 2206 EXPECT_POISONED(s1.b); 2207} 2208 2209struct SSS1 { 2210 int a, b, c; 2211}; 2212struct SSS2 { 2213 int b, a, c; 2214}; 2215struct SSS3 { 2216 int b, c, a; 2217}; 2218struct SSS4 { 2219 int c, b, a; 2220}; 2221 2222struct SSS5 { 2223 int a; 2224 float b; 2225}; 2226struct SSS6 { 2227 int a; 2228 double b; 2229}; 2230struct SSS7 { 2231 S8 b; 2232 int a; 2233}; 2234struct SSS8 { 2235 S2 b; 2236 S8 a; 2237}; 2238 2239TEST(MemorySanitizer, IntStruct3) { 2240 TestReturnStruct<SSS1>(); 2241 TestReturnStruct<SSS2>(); 2242 TestReturnStruct<SSS3>(); 2243 TestReturnStruct<SSS4>(); 2244 TestReturnStruct<SSS5>(); 2245 TestReturnStruct<SSS6>(); 2246 TestReturnStruct<SSS7>(); 2247 TestReturnStruct<SSS8>(); 2248} 2249 2250struct LongStruct { 2251 U1 a1, b1; 2252 U2 a2, b2; 2253 U4 a4, b4; 2254 U8 a8, b8; 2255}; 2256 2257NOINLINE LongStruct ReturnLongStruct1() { 2258 LongStruct res; 2259 __msan_poison(&res, sizeof(res)); 2260 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2261 // leaves b1, .., b8 poisoned. 2262 return res; 2263} 2264 2265NOINLINE LongStruct ReturnLongStruct2() { 2266 LongStruct res; 2267 __msan_poison(&res, sizeof(res)); 2268 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2269 // leaves a1, .., a8 poisoned. 2270 return res; 2271} 2272 2273TEST(MemorySanitizer, LongStruct) { 2274 LongStruct s1 = ReturnLongStruct1(); 2275 __msan_print_shadow(&s1, sizeof(s1)); 2276 EXPECT_NOT_POISONED(s1.a1); 2277 EXPECT_NOT_POISONED(s1.a2); 2278 EXPECT_NOT_POISONED(s1.a4); 2279 EXPECT_NOT_POISONED(s1.a8); 2280 2281 EXPECT_POISONED(s1.b1); 2282 EXPECT_POISONED(s1.b2); 2283 EXPECT_POISONED(s1.b4); 2284 EXPECT_POISONED(s1.b8); 2285 2286 LongStruct s2 = ReturnLongStruct2(); 2287 __msan_print_shadow(&s2, sizeof(s2)); 2288 EXPECT_NOT_POISONED(s2.b1); 2289 EXPECT_NOT_POISONED(s2.b2); 2290 EXPECT_NOT_POISONED(s2.b4); 2291 EXPECT_NOT_POISONED(s2.b8); 2292 2293 EXPECT_POISONED(s2.a1); 2294 EXPECT_POISONED(s2.a2); 2295 EXPECT_POISONED(s2.a4); 2296 EXPECT_POISONED(s2.a8); 2297} 2298 2299TEST(MemorySanitizer, getrlimit) { 2300 struct rlimit limit; 2301 __msan_poison(&limit, sizeof(limit)); 2302 int result = getrlimit(RLIMIT_DATA, &limit); 2303 assert(result == 0); 2304 EXPECT_NOT_POISONED(limit.rlim_cur); 2305 EXPECT_NOT_POISONED(limit.rlim_max); 2306} 2307 2308TEST(MemorySanitizer, getrusage) { 2309 struct rusage usage; 2310 __msan_poison(&usage, sizeof(usage)); 2311 int result = getrusage(RUSAGE_SELF, &usage); 2312 assert(result == 0); 2313 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2314 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2315 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2316 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2317 EXPECT_NOT_POISONED(usage.ru_maxrss); 2318 EXPECT_NOT_POISONED(usage.ru_minflt); 2319 EXPECT_NOT_POISONED(usage.ru_majflt); 2320 EXPECT_NOT_POISONED(usage.ru_inblock); 2321 EXPECT_NOT_POISONED(usage.ru_oublock); 2322 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2323 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2324} 2325 2326#ifdef __GLIBC__ 2327extern char *program_invocation_name; 2328#else // __GLIBC__ 2329# error "TODO: port this" 2330#endif 2331 2332static void dladdr_testfn() {} 2333 2334TEST(MemorySanitizer, dladdr) { 2335 Dl_info info; 2336 __msan_poison(&info, sizeof(info)); 2337 int result = dladdr((const void*)dladdr_testfn, &info); 2338 assert(result != 0); 2339 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2340 if (info.dli_fname) 2341 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2342 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2343 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2344 if (info.dli_sname) 2345 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2346 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2347} 2348 2349#ifndef MSAN_TEST_DISABLE_DLOPEN 2350 2351static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2352 (*(int *)data)++; 2353 EXPECT_NOT_POISONED(info->dlpi_addr); 2354 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2355 EXPECT_NOT_POISONED(info->dlpi_phnum); 2356 for (int i = 0; i < info->dlpi_phnum; ++i) 2357 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2358 return 0; 2359} 2360 2361// Compute the path to our loadable DSO. We assume it's in the same 2362// directory. Only use string routines that we intercept so far to do this. 2363static int PathToLoadable(char *buf, size_t sz) { 2364 const char *basename = "libmsan_loadable.x86_64.so"; 2365 char *argv0 = program_invocation_name; 2366 char *last_slash = strrchr(argv0, '/'); 2367 assert(last_slash); 2368 int res = 2369 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2370 return res < sz ? 0 : res; 2371} 2372 2373TEST(MemorySanitizer, dl_iterate_phdr) { 2374 char path[4096]; 2375 int res = PathToLoadable(path, sizeof(path)); 2376 assert(!res); 2377 2378 // Having at least one dlopen'ed library in the process makes this more 2379 // entertaining. 2380 void *lib = dlopen(path, RTLD_LAZY); 2381 ASSERT_NE((void*)0, lib); 2382 2383 int count = 0; 2384 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2385 assert(count > 0); 2386 2387 dlclose(lib); 2388} 2389 2390 2391TEST(MemorySanitizer, dlopen) { 2392 char path[4096]; 2393 int res = PathToLoadable(path, sizeof(path)); 2394 assert(!res); 2395 2396 // We need to clear shadow for globals when doing dlopen. In order to test 2397 // this, we have to poison the shadow for the DSO before we load it. In 2398 // general this is difficult, but the loader tends to reload things in the 2399 // same place, so we open, close, and then reopen. The global should always 2400 // start out clean after dlopen. 2401 for (int i = 0; i < 2; i++) { 2402 void *lib = dlopen(path, RTLD_LAZY); 2403 if (lib == NULL) { 2404 printf("dlerror: %s\n", dlerror()); 2405 assert(lib != NULL); 2406 } 2407 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2408 assert(get_dso_global); 2409 void **dso_global = get_dso_global(); 2410 EXPECT_NOT_POISONED(*dso_global); 2411 __msan_poison(dso_global, sizeof(*dso_global)); 2412 EXPECT_POISONED(*dso_global); 2413 dlclose(lib); 2414 } 2415} 2416 2417// Regression test for a crash in dlopen() interceptor. 2418TEST(MemorySanitizer, dlopenFailed) { 2419 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2420 void *lib = dlopen(path, RTLD_LAZY); 2421 ASSERT_EQ(0, lib); 2422} 2423 2424#endif // MSAN_TEST_DISABLE_DLOPEN 2425 2426TEST(MemorySanitizer, sched_getaffinity) { 2427 cpu_set_t mask; 2428 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2429 ASSERT_EQ(0, res); 2430 EXPECT_NOT_POISONED(mask); 2431} 2432 2433TEST(MemorySanitizer, scanf) { 2434 const char *input = "42 hello"; 2435 int* d = new int; 2436 char* s = new char[7]; 2437 int res = sscanf(input, "%d %5s", d, s); 2438 printf("res %d\n", res); 2439 assert(res == 2); 2440 EXPECT_NOT_POISONED(*d); 2441 EXPECT_NOT_POISONED(s[0]); 2442 EXPECT_NOT_POISONED(s[1]); 2443 EXPECT_NOT_POISONED(s[2]); 2444 EXPECT_NOT_POISONED(s[3]); 2445 EXPECT_NOT_POISONED(s[4]); 2446 EXPECT_NOT_POISONED(s[5]); 2447 EXPECT_POISONED(s[6]); 2448 delete s; 2449 delete d; 2450} 2451 2452static void *SimpleThread_threadfn(void* data) { 2453 return new int; 2454} 2455 2456TEST(MemorySanitizer, SimpleThread) { 2457 pthread_t t; 2458 void *p; 2459 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2460 assert(!res); 2461 EXPECT_NOT_POISONED(t); 2462 res = pthread_join(t, &p); 2463 assert(!res); 2464 EXPECT_NOT_POISONED(p); 2465 delete (int*)p; 2466} 2467 2468static void *SmallStackThread_threadfn(void* data) { 2469 return 0; 2470} 2471 2472TEST(MemorySanitizer, SmallStackThread) { 2473 pthread_attr_t attr; 2474 pthread_t t; 2475 void *p; 2476 int res; 2477 res = pthread_attr_init(&attr); 2478 ASSERT_EQ(0, res); 2479 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2480 ASSERT_EQ(0, res); 2481 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2482 ASSERT_EQ(0, res); 2483 res = pthread_join(t, &p); 2484 ASSERT_EQ(0, res); 2485 res = pthread_attr_destroy(&attr); 2486 ASSERT_EQ(0, res); 2487} 2488 2489TEST(MemorySanitizer, PreAllocatedStackThread) { 2490 pthread_attr_t attr; 2491 pthread_t t; 2492 int res; 2493 res = pthread_attr_init(&attr); 2494 ASSERT_EQ(0, res); 2495 void *stack; 2496 const size_t kStackSize = 64 * 1024; 2497 res = posix_memalign(&stack, 4096, kStackSize); 2498 ASSERT_EQ(0, res); 2499 res = pthread_attr_setstack(&attr, stack, kStackSize); 2500 ASSERT_EQ(0, res); 2501 // A small self-allocated stack can not be extended by the tool. 2502 // In this case pthread_create is expected to fail. 2503 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2504 EXPECT_NE(0, res); 2505 res = pthread_attr_destroy(&attr); 2506 ASSERT_EQ(0, res); 2507} 2508 2509TEST(MemorySanitizer, pthread_attr_get) { 2510 pthread_attr_t attr; 2511 int res; 2512 res = pthread_attr_init(&attr); 2513 ASSERT_EQ(0, res); 2514 { 2515 int v; 2516 res = pthread_attr_getdetachstate(&attr, &v); 2517 ASSERT_EQ(0, res); 2518 EXPECT_NOT_POISONED(v); 2519 } 2520 { 2521 size_t v; 2522 res = pthread_attr_getguardsize(&attr, &v); 2523 ASSERT_EQ(0, res); 2524 EXPECT_NOT_POISONED(v); 2525 } 2526 { 2527 struct sched_param v; 2528 res = pthread_attr_getschedparam(&attr, &v); 2529 ASSERT_EQ(0, res); 2530 EXPECT_NOT_POISONED(v); 2531 } 2532 { 2533 int v; 2534 res = pthread_attr_getschedpolicy(&attr, &v); 2535 ASSERT_EQ(0, res); 2536 EXPECT_NOT_POISONED(v); 2537 } 2538 { 2539 int v; 2540 res = pthread_attr_getinheritsched(&attr, &v); 2541 ASSERT_EQ(0, res); 2542 EXPECT_NOT_POISONED(v); 2543 } 2544 { 2545 int v; 2546 res = pthread_attr_getscope(&attr, &v); 2547 ASSERT_EQ(0, res); 2548 EXPECT_NOT_POISONED(v); 2549 } 2550 { 2551 size_t v; 2552 res = pthread_attr_getstacksize(&attr, &v); 2553 ASSERT_EQ(0, res); 2554 EXPECT_NOT_POISONED(v); 2555 } 2556 { 2557 void *v; 2558 size_t w; 2559 res = pthread_attr_getstack(&attr, &v, &w); 2560 ASSERT_EQ(0, res); 2561 EXPECT_NOT_POISONED(v); 2562 EXPECT_NOT_POISONED(w); 2563 } 2564 { 2565 cpu_set_t v; 2566 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 2567 ASSERT_EQ(0, res); 2568 EXPECT_NOT_POISONED(v); 2569 } 2570 res = pthread_attr_destroy(&attr); 2571 ASSERT_EQ(0, res); 2572} 2573 2574TEST(MemorySanitizer, pthread_getschedparam) { 2575 int policy; 2576 struct sched_param param; 2577 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2578 ASSERT_EQ(0, res); 2579 EXPECT_NOT_POISONED(policy); 2580 EXPECT_NOT_POISONED(param.sched_priority); 2581} 2582 2583TEST(MemorySanitizer, pthread_key_create) { 2584 pthread_key_t key; 2585 int res = pthread_key_create(&key, NULL); 2586 assert(!res); 2587 EXPECT_NOT_POISONED(key); 2588 res = pthread_key_delete(key); 2589 assert(!res); 2590} 2591 2592namespace { 2593struct SignalCondArg { 2594 pthread_cond_t* cond; 2595 pthread_mutex_t* mu; 2596 bool broadcast; 2597}; 2598 2599void *SignalCond(void *param) { 2600 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2601 pthread_mutex_lock(arg->mu); 2602 if (arg->broadcast) 2603 pthread_cond_broadcast(arg->cond); 2604 else 2605 pthread_cond_signal(arg->cond); 2606 pthread_mutex_unlock(arg->mu); 2607 return 0; 2608} 2609} // namespace 2610 2611TEST(MemorySanitizer, pthread_cond_wait) { 2612 pthread_cond_t cond; 2613 pthread_mutex_t mu; 2614 SignalCondArg args = {&cond, &mu, false}; 2615 pthread_cond_init(&cond, 0); 2616 pthread_mutex_init(&mu, 0); 2617 pthread_mutex_lock(&mu); 2618 2619 // signal 2620 pthread_t thr; 2621 pthread_create(&thr, 0, SignalCond, &args); 2622 int res = pthread_cond_wait(&cond, &mu); 2623 assert(!res); 2624 pthread_join(thr, 0); 2625 2626 // broadcast 2627 args.broadcast = true; 2628 pthread_create(&thr, 0, SignalCond, &args); 2629 res = pthread_cond_wait(&cond, &mu); 2630 assert(!res); 2631 pthread_join(thr, 0); 2632 2633 pthread_mutex_unlock(&mu); 2634 pthread_mutex_destroy(&mu); 2635 pthread_cond_destroy(&cond); 2636} 2637 2638TEST(MemorySanitizer, posix_memalign) { 2639 void *p; 2640 EXPECT_POISONED(p); 2641 int res = posix_memalign(&p, 4096, 13); 2642 ASSERT_EQ(0, res); 2643 EXPECT_NOT_POISONED(p); 2644 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2645 free(p); 2646} 2647 2648TEST(MemorySanitizer, memalign) { 2649 void *p = memalign(4096, 13); 2650 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2651 free(p); 2652} 2653 2654TEST(MemorySanitizer, valloc) { 2655 void *a = valloc(100); 2656 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2657 free(a); 2658} 2659 2660TEST(MemorySanitizer, pvalloc) { 2661 void *p = pvalloc(kPageSize + 100); 2662 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2663 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2664 free(p); 2665 2666 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2667 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2668 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2669 free(p); 2670} 2671 2672TEST(MemorySanitizer, inet_pton) { 2673 const char *s = "1:0:0:0:0:0:0:8"; 2674 unsigned char buf[sizeof(struct in6_addr)]; 2675 int res = inet_pton(AF_INET6, s, buf); 2676 ASSERT_EQ(1, res); 2677 EXPECT_NOT_POISONED(buf[0]); 2678 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2679 2680 char s_out[INET6_ADDRSTRLEN]; 2681 EXPECT_POISONED(s_out[3]); 2682 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2683 ASSERT_NE((void*)0, q); 2684 EXPECT_NOT_POISONED(s_out[3]); 2685} 2686 2687TEST(MemorySanitizer, inet_aton) { 2688 const char *s = "127.0.0.1"; 2689 struct in_addr in[2]; 2690 int res = inet_aton(s, in); 2691 ASSERT_NE(0, res); 2692 EXPECT_NOT_POISONED(in[0]); 2693 EXPECT_POISONED(*(char *)(in + 1)); 2694} 2695 2696TEST(MemorySanitizer, uname) { 2697 struct utsname u; 2698 int res = uname(&u); 2699 assert(!res); 2700 EXPECT_NOT_POISONED(strlen(u.sysname)); 2701 EXPECT_NOT_POISONED(strlen(u.nodename)); 2702 EXPECT_NOT_POISONED(strlen(u.release)); 2703 EXPECT_NOT_POISONED(strlen(u.version)); 2704 EXPECT_NOT_POISONED(strlen(u.machine)); 2705} 2706 2707TEST(MemorySanitizer, gethostname) { 2708 char buf[100]; 2709 int res = gethostname(buf, 100); 2710 assert(!res); 2711 EXPECT_NOT_POISONED(strlen(buf)); 2712} 2713 2714TEST(MemorySanitizer, sysinfo) { 2715 struct sysinfo info; 2716 int res = sysinfo(&info); 2717 assert(!res); 2718 EXPECT_NOT_POISONED(info); 2719} 2720 2721TEST(MemorySanitizer, getpwuid) { 2722 struct passwd *p = getpwuid(0); // root 2723 assert(p); 2724 EXPECT_NOT_POISONED(p->pw_name); 2725 assert(p->pw_name); 2726 EXPECT_NOT_POISONED(p->pw_name[0]); 2727 EXPECT_NOT_POISONED(p->pw_uid); 2728 assert(p->pw_uid == 0); 2729} 2730 2731TEST(MemorySanitizer, getpwnam_r) { 2732 struct passwd pwd; 2733 struct passwd *pwdres; 2734 char buf[10000]; 2735 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2736 assert(!res); 2737 EXPECT_NOT_POISONED(pwd.pw_name); 2738 assert(pwd.pw_name); 2739 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2740 EXPECT_NOT_POISONED(pwd.pw_uid); 2741 assert(pwd.pw_uid == 0); 2742} 2743 2744TEST(MemorySanitizer, getpwnam_r_positive) { 2745 struct passwd pwd; 2746 struct passwd *pwdres; 2747 char s[5]; 2748 strncpy(s, "abcd", 5); 2749 __msan_poison(s, 5); 2750 char buf[10000]; 2751 int res; 2752 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2753} 2754 2755TEST(MemorySanitizer, getgrnam_r) { 2756 struct group grp; 2757 struct group *grpres; 2758 char buf[10000]; 2759 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2760 assert(!res); 2761 EXPECT_NOT_POISONED(grp.gr_name); 2762 assert(grp.gr_name); 2763 EXPECT_NOT_POISONED(grp.gr_name[0]); 2764 EXPECT_NOT_POISONED(grp.gr_gid); 2765} 2766 2767TEST(MemorySanitizer, getgroups) { 2768 int n = getgroups(0, 0); 2769 gid_t *gids = new gid_t[n]; 2770 int res = getgroups(n, gids); 2771 ASSERT_EQ(n, res); 2772 for (int i = 0; i < n; ++i) 2773 EXPECT_NOT_POISONED(gids[i]); 2774} 2775 2776TEST(MemorySanitizer, wordexp) { 2777 wordexp_t w; 2778 int res = wordexp("a b c", &w, 0); 2779 ASSERT_EQ(0, res); 2780 ASSERT_EQ(3, w.we_wordc); 2781 ASSERT_STREQ("a", w.we_wordv[0]); 2782 ASSERT_STREQ("b", w.we_wordv[1]); 2783 ASSERT_STREQ("c", w.we_wordv[2]); 2784} 2785 2786template<class T> 2787static bool applySlt(T value, T shadow) { 2788 __msan_partial_poison(&value, &shadow, sizeof(T)); 2789 volatile bool zzz = true; 2790 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2791 // a shift-and-trunc to get at the highest bit. 2792 volatile bool v = value < 0 || zzz; 2793 return v; 2794} 2795 2796TEST(MemorySanitizer, SignedCompareWithZero) { 2797 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2798 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2799 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2800 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2801 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2802 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2803} 2804 2805template <class T, class S> 2806static T poisoned(T Va, S Sa) { 2807 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2808 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2809 T a; 2810 a = Va; 2811 __msan_partial_poison(&a, &Sa, sizeof(T)); 2812 return a; 2813} 2814 2815TEST(MemorySanitizer, ICmpRelational) { 2816 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2817 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2818 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2819 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2820 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2821 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2822 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2823 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2824 poisoned(-1, 0xFFFFFFFFU)); 2825 2826 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2827 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2828 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2829 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2830 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2831 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2832 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2833 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2834 poisoned(-1, 0xFFFFFFFFU)); 2835 2836 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2837 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2838 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2839 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2840 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2841 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2842 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2843 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2844 poisoned(-1, 0xFFFFFFFFU)); 2845 2846 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2847 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2848 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2849 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2850 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2851 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2852 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2853 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2854 poisoned(-1, 0xFFFFFFFFU)); 2855 2856 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2857 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2858 2859 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2860} 2861 2862#if MSAN_HAS_M128 2863TEST(MemorySanitizer, ICmpVectorRelational) { 2864 EXPECT_NOT_POISONED( 2865 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2866 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2867 EXPECT_NOT_POISONED( 2868 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2869 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2870 EXPECT_POISONED( 2871 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2872 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2873 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2874 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2875} 2876#endif 2877 2878// Volatile bitfield store is implemented as load-mask-store 2879// Test that we don't warn on the store of (uninitialized) padding. 2880struct VolatileBitfieldStruct { 2881 volatile unsigned x : 1; 2882 unsigned y : 1; 2883}; 2884 2885TEST(MemorySanitizer, VolatileBitfield) { 2886 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2887 S->x = 1; 2888 EXPECT_NOT_POISONED((unsigned)S->x); 2889 EXPECT_POISONED((unsigned)S->y); 2890} 2891 2892TEST(MemorySanitizer, UnalignedLoad) { 2893 char x[32]; 2894 memset(x + 8, 0, 16); 2895 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2896 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2897 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2898 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2899 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2900 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2901 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2902 2903 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2904 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2905 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2906 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2907 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2908 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2909 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2910 2911 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2912 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2913 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2914 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2915 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2916 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2917 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2918 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2919 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2920} 2921 2922TEST(MemorySanitizer, UnalignedStore16) { 2923 char x[5]; 2924 U2 y = 0; 2925 __msan_poison(&y, 1); 2926 __sanitizer_unaligned_store16(x + 1, y); 2927 EXPECT_POISONED(x[0]); 2928 EXPECT_POISONED(x[1]); 2929 EXPECT_NOT_POISONED(x[2]); 2930 EXPECT_POISONED(x[3]); 2931 EXPECT_POISONED(x[4]); 2932} 2933 2934TEST(MemorySanitizer, UnalignedStore32) { 2935 char x[8]; 2936 U4 y4 = 0; 2937 __msan_poison(&y4, 2); 2938 __sanitizer_unaligned_store32(x+3, y4); 2939 EXPECT_POISONED(x[0]); 2940 EXPECT_POISONED(x[1]); 2941 EXPECT_POISONED(x[2]); 2942 EXPECT_POISONED(x[3]); 2943 EXPECT_POISONED(x[4]); 2944 EXPECT_NOT_POISONED(x[5]); 2945 EXPECT_NOT_POISONED(x[6]); 2946 EXPECT_POISONED(x[7]); 2947} 2948 2949TEST(MemorySanitizer, UnalignedStore64) { 2950 char x[16]; 2951 U8 y = 0; 2952 __msan_poison(&y, 3); 2953 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2954 __sanitizer_unaligned_store64(x+3, y); 2955 EXPECT_POISONED(x[0]); 2956 EXPECT_POISONED(x[1]); 2957 EXPECT_POISONED(x[2]); 2958 EXPECT_POISONED(x[3]); 2959 EXPECT_POISONED(x[4]); 2960 EXPECT_POISONED(x[5]); 2961 EXPECT_NOT_POISONED(x[6]); 2962 EXPECT_NOT_POISONED(x[7]); 2963 EXPECT_NOT_POISONED(x[8]); 2964 EXPECT_POISONED(x[9]); 2965 EXPECT_NOT_POISONED(x[10]); 2966 EXPECT_POISONED(x[11]); 2967} 2968 2969TEST(MemorySanitizerDr, StoreInDSOTest) { 2970 if (!__msan_has_dynamic_component()) return; 2971 char* s = new char[10]; 2972 dso_memfill(s, 9); 2973 EXPECT_NOT_POISONED(s[5]); 2974 EXPECT_POISONED(s[9]); 2975} 2976 2977int return_poisoned_int() { 2978 return ReturnPoisoned<U8>(); 2979} 2980 2981TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2982 if (!__msan_has_dynamic_component()) return; 2983 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2984} 2985 2986NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2987 EXPECT_POISONED(x); 2988 EXPECT_POISONED(y); 2989 EXPECT_POISONED(z); 2990 return 0; 2991} 2992 2993static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2994 EXPECT_NOT_POISONED(x); 2995 EXPECT_NOT_POISONED(y); 2996 EXPECT_NOT_POISONED(z); 2997 return 0; 2998} 2999 3000TEST(MemorySanitizerDr, CallFromDSOTest) { 3001 if (!__msan_has_dynamic_component()) return; 3002 S8* x = GetPoisoned<S8>(); 3003 S8* y = GetPoisoned<S8>(); 3004 S8* z = GetPoisoned<S8>(); 3005 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 3006 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 3007} 3008 3009static void StackStoreInDSOFn(int* x, int* y) { 3010 EXPECT_NOT_POISONED(*x); 3011 EXPECT_NOT_POISONED(*y); 3012} 3013 3014TEST(MemorySanitizerDr, StackStoreInDSOTest) { 3015 if (!__msan_has_dynamic_component()) return; 3016 dso_stack_store(StackStoreInDSOFn, 1); 3017} 3018 3019TEST(MemorySanitizerOrigins, SetGet) { 3020 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 3021 if (!TrackingOrigins()) return; 3022 int x; 3023 __msan_set_origin(&x, sizeof(x), 1234); 3024 EXPECT_EQ(1234, __msan_get_origin(&x)); 3025 __msan_set_origin(&x, sizeof(x), 5678); 3026 EXPECT_EQ(5678, __msan_get_origin(&x)); 3027 __msan_set_origin(&x, sizeof(x), 0); 3028 EXPECT_EQ(0, __msan_get_origin(&x)); 3029} 3030 3031namespace { 3032struct S { 3033 U4 dummy; 3034 U2 a; 3035 U2 b; 3036}; 3037 3038// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 3039TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 3040 if (!TrackingOrigins()) return; 3041 3042 S s; 3043 U4 origin = rand(); // NOLINT 3044 s.a = *GetPoisonedO<U2>(0, origin); 3045 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3046 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3047 3048 s.b = 42; 3049 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3050 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3051} 3052} // namespace 3053 3054template<class T, class BinaryOp> 3055INLINE 3056void BinaryOpOriginTest(BinaryOp op) { 3057 U4 ox = rand(); //NOLINT 3058 U4 oy = rand(); //NOLINT 3059 T *x = GetPoisonedO<T>(0, ox, 0); 3060 T *y = GetPoisonedO<T>(1, oy, 0); 3061 T *z = GetPoisonedO<T>(2, 0, 0); 3062 3063 *z = op(*x, *y); 3064 U4 origin = __msan_get_origin(z); 3065 EXPECT_POISONED_O(*z, origin); 3066 EXPECT_EQ(true, origin == ox || origin == oy); 3067 3068 // y is poisoned, x is not. 3069 *x = 10101; 3070 *y = *GetPoisonedO<T>(1, oy); 3071 break_optimization(x); 3072 __msan_set_origin(z, sizeof(*z), 0); 3073 *z = op(*x, *y); 3074 EXPECT_POISONED_O(*z, oy); 3075 EXPECT_EQ(__msan_get_origin(z), oy); 3076 3077 // x is poisoned, y is not. 3078 *x = *GetPoisonedO<T>(0, ox); 3079 *y = 10101010; 3080 break_optimization(y); 3081 __msan_set_origin(z, sizeof(*z), 0); 3082 *z = op(*x, *y); 3083 EXPECT_POISONED_O(*z, ox); 3084 EXPECT_EQ(__msan_get_origin(z), ox); 3085} 3086 3087template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 3088template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 3089template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 3090template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 3091template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 3092template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 3093 3094TEST(MemorySanitizerOrigins, BinaryOp) { 3095 if (!TrackingOrigins()) return; 3096 BinaryOpOriginTest<S8>(XOR<S8>); 3097 BinaryOpOriginTest<U8>(ADD<U8>); 3098 BinaryOpOriginTest<S4>(SUB<S4>); 3099 BinaryOpOriginTest<S4>(MUL<S4>); 3100 BinaryOpOriginTest<U4>(OR<U4>); 3101 BinaryOpOriginTest<U4>(AND<U4>); 3102 BinaryOpOriginTest<double>(ADD<U4>); 3103 BinaryOpOriginTest<float>(ADD<S4>); 3104 BinaryOpOriginTest<double>(ADD<double>); 3105 BinaryOpOriginTest<float>(ADD<double>); 3106} 3107 3108TEST(MemorySanitizerOrigins, Unary) { 3109 if (!TrackingOrigins()) return; 3110 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3111 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3112 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3113 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3114 3115 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3116 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3117 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3118 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3119 3120 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3121 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3122 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3123 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3124 3125 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3126 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3127 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3128 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3129 3130 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3131 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 3132} 3133 3134TEST(MemorySanitizerOrigins, EQ) { 3135 if (!TrackingOrigins()) return; 3136 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 3137 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 3138 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 3139} 3140 3141TEST(MemorySanitizerOrigins, DIV) { 3142 if (!TrackingOrigins()) return; 3143 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 3144 unsigned o = __LINE__; 3145 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 3146} 3147 3148TEST(MemorySanitizerOrigins, SHIFT) { 3149 if (!TrackingOrigins()) return; 3150 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 3151 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 3152 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 3153 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 3154 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3155 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3156} 3157 3158template<class T, int N> 3159void MemCpyTest() { 3160 int ox = __LINE__; 3161 T *x = new T[N]; 3162 T *y = new T[N]; 3163 T *z = new T[N]; 3164 T *q = new T[N]; 3165 __msan_poison(x, N * sizeof(T)); 3166 __msan_set_origin(x, N * sizeof(T), ox); 3167 __msan_set_origin(y, N * sizeof(T), 777777); 3168 __msan_set_origin(z, N * sizeof(T), 888888); 3169 EXPECT_NOT_POISONED(x); 3170 memcpy(y, x, N * sizeof(T)); 3171 EXPECT_POISONED_O(y[0], ox); 3172 EXPECT_POISONED_O(y[N/2], ox); 3173 EXPECT_POISONED_O(y[N-1], ox); 3174 EXPECT_NOT_POISONED(x); 3175 void *res = mempcpy(q, x, N * sizeof(T)); 3176 ASSERT_EQ(q + N, res); 3177 EXPECT_POISONED_O(q[0], ox); 3178 EXPECT_POISONED_O(q[N/2], ox); 3179 EXPECT_POISONED_O(q[N-1], ox); 3180 EXPECT_NOT_POISONED(x); 3181 memmove(z, x, N * sizeof(T)); 3182 EXPECT_POISONED_O(z[0], ox); 3183 EXPECT_POISONED_O(z[N/2], ox); 3184 EXPECT_POISONED_O(z[N-1], ox); 3185} 3186 3187TEST(MemorySanitizerOrigins, LargeMemCpy) { 3188 if (!TrackingOrigins()) return; 3189 MemCpyTest<U1, 10000>(); 3190 MemCpyTest<U8, 10000>(); 3191} 3192 3193TEST(MemorySanitizerOrigins, SmallMemCpy) { 3194 if (!TrackingOrigins()) return; 3195 MemCpyTest<U8, 1>(); 3196 MemCpyTest<U8, 2>(); 3197 MemCpyTest<U8, 3>(); 3198} 3199 3200TEST(MemorySanitizerOrigins, Select) { 3201 if (!TrackingOrigins()) return; 3202 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 3203 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3204 S4 x; 3205 break_optimization(&x); 3206 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 3207 3208 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 3209 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 3210} 3211 3212extern "C" 3213NOINLINE char AllocaTO() { 3214 int ar[100]; 3215 break_optimization(ar); 3216 return ar[10]; 3217 // fprintf(stderr, "Descr: %s\n", 3218 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 3219} 3220 3221TEST(MemorySanitizerOrigins, Alloca) { 3222 if (!TrackingOrigins()) return; 3223 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3224 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3225 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3226 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3227} 3228 3229// FIXME: replace with a lit-like test. 3230TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 3231 if (!TrackingOrigins()) return; 3232 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 3233} 3234 3235NOINLINE int RetvalOriginTest(U4 origin) { 3236 int *a = new int; 3237 break_optimization(a); 3238 __msan_set_origin(a, sizeof(*a), origin); 3239 int res = *a; 3240 delete a; 3241 return res; 3242} 3243 3244TEST(MemorySanitizerOrigins, Retval) { 3245 if (!TrackingOrigins()) return; 3246 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3247} 3248 3249NOINLINE void ParamOriginTest(int param, U4 origin) { 3250 EXPECT_POISONED_O(param, origin); 3251} 3252 3253TEST(MemorySanitizerOrigins, Param) { 3254 if (!TrackingOrigins()) return; 3255 int *a = new int; 3256 U4 origin = __LINE__; 3257 break_optimization(a); 3258 __msan_set_origin(a, sizeof(*a), origin); 3259 ParamOriginTest(*a, origin); 3260 delete a; 3261} 3262 3263TEST(MemorySanitizerOrigins, Invoke) { 3264 if (!TrackingOrigins()) return; 3265 StructWithDtor s; // Will cause the calls to become invokes. 3266 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3267} 3268 3269TEST(MemorySanitizerOrigins, strlen) { 3270 S8 alignment; 3271 break_optimization(&alignment); 3272 char x[4] = {'a', 'b', 0, 0}; 3273 __msan_poison(&x[2], 1); 3274 U4 origin = __LINE__; 3275 __msan_set_origin(x, sizeof(x), origin); 3276 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 3277} 3278 3279TEST(MemorySanitizerOrigins, wcslen) { 3280 wchar_t w[3] = {'a', 'b', 0}; 3281 U4 origin = __LINE__; 3282 __msan_set_origin(w, sizeof(w), origin); 3283 __msan_poison(&w[2], sizeof(wchar_t)); 3284 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3285} 3286 3287#if MSAN_HAS_M128 3288TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3289 __m128 x, y; 3290 U4 origin = __LINE__; 3291 __msan_set_origin(&x, sizeof(x), origin); 3292 __msan_poison(&x, sizeof(x)); 3293 __builtin_ia32_storeups((float*)&y, x); 3294 EXPECT_POISONED_O(y, origin); 3295} 3296#endif 3297 3298NOINLINE void RecursiveMalloc(int depth) { 3299 static int count; 3300 count++; 3301 if ((count % (1024 * 1024)) == 0) 3302 printf("RecursiveMalloc: %d\n", count); 3303 int *x1 = new int; 3304 int *x2 = new int; 3305 break_optimization(x1); 3306 break_optimization(x2); 3307 if (depth > 0) { 3308 RecursiveMalloc(depth-1); 3309 RecursiveMalloc(depth-1); 3310 } 3311 delete x1; 3312 delete x2; 3313} 3314 3315TEST(MemorySanitizer, Select) { 3316 int x; 3317 int volatile* p = &x; 3318 int z = *p ? 1 : 0; 3319 EXPECT_POISONED(z); 3320} 3321 3322TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3323 RecursiveMalloc(22); 3324} 3325 3326TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3327 size_t sizes[] = {0, 20, 5000, 1<<20}; 3328 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3329 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3330 EXPECT_EQ(alloc_size, sizes[i]); 3331 } 3332} 3333 3334TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3335 char *array = reinterpret_cast<char*>(malloc(100)); 3336 int *int_ptr = new int; 3337 3338 EXPECT_TRUE(__msan_get_ownership(array)); 3339 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3340 3341 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3342 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3343 3344 void *wild_addr = reinterpret_cast<void*>(0x1); 3345 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3346 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3347 3348 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3349 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3350 3351 // NULL is a valid argument for GetAllocatedSize but is not owned. 3352 EXPECT_FALSE(__msan_get_ownership(NULL)); 3353 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3354 3355 free(array); 3356 EXPECT_FALSE(__msan_get_ownership(array)); 3357 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3358 3359 delete int_ptr; 3360} 3361