msan_test.cc revision e236dbb5e558b174609d2d13e80685d488c129d8
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 struct random_data buf; 1153 1154 memset(z, 0, sizeof(z)); 1155 int res = initstate_r(0, z, sizeof(z), &buf); 1156 ASSERT_EQ(0, res); 1157 1158 res = random_r(&buf, &x); 1159 ASSERT_EQ(0, res); 1160 EXPECT_NOT_POISONED(x); 1161} 1162 1163TEST(MemorySanitizer, confstr) { 1164 char buf[3]; 1165 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1166 ASSERT_GT(res, sizeof(buf)); 1167 EXPECT_NOT_POISONED(buf[0]); 1168 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1169 1170 char buf2[1000]; 1171 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1172 ASSERT_LT(res, sizeof(buf2)); 1173 EXPECT_NOT_POISONED(buf2[0]); 1174 EXPECT_NOT_POISONED(buf2[res - 1]); 1175 EXPECT_POISONED(buf2[res]); 1176 ASSERT_EQ(res, strlen(buf2) + 1); 1177} 1178 1179TEST(MemorySanitizer, readdir) { 1180 DIR *dir = opendir("."); 1181 struct dirent *d = readdir(dir); 1182 assert(d); 1183 EXPECT_NOT_POISONED(d->d_name[0]); 1184 closedir(dir); 1185} 1186 1187TEST(MemorySanitizer, readdir_r) { 1188 DIR *dir = opendir("."); 1189 struct dirent d; 1190 struct dirent *pd; 1191 int res = readdir_r(dir, &d, &pd); 1192 assert(!res); 1193 EXPECT_NOT_POISONED(pd); 1194 EXPECT_NOT_POISONED(d.d_name[0]); 1195 closedir(dir); 1196} 1197 1198TEST(MemorySanitizer, realpath) { 1199 const char* relpath = "."; 1200 char path[PATH_MAX + 1]; 1201 char* res = realpath(relpath, path); 1202 assert(res); 1203 EXPECT_NOT_POISONED(path[0]); 1204} 1205 1206TEST(MemorySanitizer, realpath_null) { 1207 const char* relpath = "."; 1208 char* res = realpath(relpath, NULL); 1209 printf("%d, %s\n", errno, strerror(errno)); 1210 assert(res); 1211 EXPECT_NOT_POISONED(res[0]); 1212 free(res); 1213} 1214 1215TEST(MemorySanitizer, canonicalize_file_name) { 1216 const char* relpath = "."; 1217 char* res = canonicalize_file_name(relpath); 1218 assert(res); 1219 EXPECT_NOT_POISONED(res[0]); 1220 free(res); 1221} 1222 1223extern char **environ; 1224 1225TEST(MemorySanitizer, setenv) { 1226 setenv("AAA", "BBB", 1); 1227 for (char **envp = environ; *envp; ++envp) { 1228 EXPECT_NOT_POISONED(*envp); 1229 EXPECT_NOT_POISONED(*envp[0]); 1230 } 1231} 1232 1233TEST(MemorySanitizer, putenv) { 1234 char s[] = "AAA=BBB"; 1235 putenv(s); 1236 for (char **envp = environ; *envp; ++envp) { 1237 EXPECT_NOT_POISONED(*envp); 1238 EXPECT_NOT_POISONED(*envp[0]); 1239 } 1240} 1241 1242TEST(MemorySanitizer, memcpy) { 1243 char* x = new char[2]; 1244 char* y = new char[2]; 1245 x[0] = 1; 1246 x[1] = *GetPoisoned<char>(); 1247 memcpy(y, x, 2); 1248 EXPECT_NOT_POISONED(y[0]); 1249 EXPECT_POISONED(y[1]); 1250} 1251 1252void TestUnalignedMemcpy(int left, int right, bool src_is_aligned) { 1253 const int sz = 20; 1254 char *dst = (char *)malloc(sz); 1255 U4 origin = __msan_get_origin(dst); 1256 1257 char *src = (char *)malloc(sz); 1258 memset(src, 0, sz); 1259 1260 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); 1261 for (int i = 0; i < left; ++i) 1262 EXPECT_POISONED_O(dst[i], origin); 1263 for (int i = 0; i < right; ++i) 1264 EXPECT_POISONED_O(dst[sz - i - 1], origin); 1265 EXPECT_NOT_POISONED(dst[left]); 1266 EXPECT_NOT_POISONED(dst[sz - right - 1]); 1267 1268 free(dst); 1269 free(src); 1270} 1271 1272TEST(MemorySanitizer, memcpy_unaligned) { 1273 for (int i = 0; i < 4; ++i) { 1274 for (int j = 0; j < 4; ++j) { 1275 TestUnalignedMemcpy(i, j, true); 1276 TestUnalignedMemcpy(i, j, false); 1277 } 1278 } 1279} 1280 1281TEST(MemorySanitizer, memmove) { 1282 char* x = new char[2]; 1283 char* y = new char[2]; 1284 x[0] = 1; 1285 x[1] = *GetPoisoned<char>(); 1286 memmove(y, x, 2); 1287 EXPECT_NOT_POISONED(y[0]); 1288 EXPECT_POISONED(y[1]); 1289} 1290 1291TEST(MemorySanitizer, bcopy) { 1292 char* x = new char[2]; 1293 char* y = new char[2]; 1294 x[0] = 1; 1295 x[1] = *GetPoisoned<char>(); 1296 bcopy(x, y, 2); 1297 EXPECT_NOT_POISONED(y[0]); 1298 EXPECT_POISONED(y[1]); 1299} 1300 1301TEST(MemorySanitizer, strdup) { 1302 char buf[4] = "abc"; 1303 __msan_poison(buf + 2, sizeof(*buf)); 1304 char *x = strdup(buf); 1305 EXPECT_NOT_POISONED(x[0]); 1306 EXPECT_NOT_POISONED(x[1]); 1307 EXPECT_POISONED(x[2]); 1308 EXPECT_NOT_POISONED(x[3]); 1309 free(x); 1310} 1311 1312TEST(MemorySanitizer, strndup) { 1313 char buf[4] = "abc"; 1314 __msan_poison(buf + 2, sizeof(*buf)); 1315 char *x = strndup(buf, 3); 1316 EXPECT_NOT_POISONED(x[0]); 1317 EXPECT_NOT_POISONED(x[1]); 1318 EXPECT_POISONED(x[2]); 1319 EXPECT_NOT_POISONED(x[3]); 1320 free(x); 1321} 1322 1323TEST(MemorySanitizer, strndup_short) { 1324 char buf[4] = "abc"; 1325 __msan_poison(buf + 1, sizeof(*buf)); 1326 __msan_poison(buf + 2, sizeof(*buf)); 1327 char *x = strndup(buf, 2); 1328 EXPECT_NOT_POISONED(x[0]); 1329 EXPECT_POISONED(x[1]); 1330 EXPECT_NOT_POISONED(x[2]); 1331 free(x); 1332} 1333 1334 1335template<class T, int size> 1336void TestOverlapMemmove() { 1337 T *x = new T[size]; 1338 assert(size >= 3); 1339 x[2] = 0; 1340 memmove(x, x + 1, (size - 1) * sizeof(T)); 1341 EXPECT_NOT_POISONED(x[1]); 1342 if (!__msan_has_dynamic_component()) { 1343 // FIXME: under DR we will lose this information 1344 // because accesses in memmove will unpoisin the shadow. 1345 // We need to use our own memove implementation instead of libc's. 1346 EXPECT_POISONED(x[0]); 1347 EXPECT_POISONED(x[2]); 1348 } 1349 delete [] x; 1350} 1351 1352TEST(MemorySanitizer, overlap_memmove) { 1353 TestOverlapMemmove<U1, 10>(); 1354 TestOverlapMemmove<U1, 1000>(); 1355 TestOverlapMemmove<U8, 4>(); 1356 TestOverlapMemmove<U8, 1000>(); 1357} 1358 1359TEST(MemorySanitizer, strcpy) { // NOLINT 1360 char* x = new char[3]; 1361 char* y = new char[3]; 1362 x[0] = 'a'; 1363 x[1] = *GetPoisoned<char>(1, 1); 1364 x[2] = 0; 1365 strcpy(y, x); // NOLINT 1366 EXPECT_NOT_POISONED(y[0]); 1367 EXPECT_POISONED(y[1]); 1368 EXPECT_NOT_POISONED(y[2]); 1369} 1370 1371TEST(MemorySanitizer, strncpy) { // NOLINT 1372 char* x = new char[3]; 1373 char* y = new char[3]; 1374 x[0] = 'a'; 1375 x[1] = *GetPoisoned<char>(1, 1); 1376 x[2] = 0; 1377 strncpy(y, x, 2); // NOLINT 1378 EXPECT_NOT_POISONED(y[0]); 1379 EXPECT_POISONED(y[1]); 1380 EXPECT_POISONED(y[2]); 1381} 1382 1383TEST(MemorySanitizer, stpcpy) { // NOLINT 1384 char* x = new char[3]; 1385 char* y = new char[3]; 1386 x[0] = 'a'; 1387 x[1] = *GetPoisoned<char>(1, 1); 1388 x[2] = 0; 1389 char *res = stpcpy(y, x); // NOLINT 1390 ASSERT_EQ(res, y + 2); 1391 EXPECT_NOT_POISONED(y[0]); 1392 EXPECT_POISONED(y[1]); 1393 EXPECT_NOT_POISONED(y[2]); 1394} 1395 1396TEST(MemorySanitizer, strtol) { 1397 char *e; 1398 assert(1 == strtol("1", &e, 10)); 1399 EXPECT_NOT_POISONED((S8) e); 1400} 1401 1402TEST(MemorySanitizer, strtoll) { 1403 char *e; 1404 assert(1 == strtoll("1", &e, 10)); 1405 EXPECT_NOT_POISONED((S8) e); 1406} 1407 1408TEST(MemorySanitizer, strtoul) { 1409 char *e; 1410 assert(1 == strtoul("1", &e, 10)); 1411 EXPECT_NOT_POISONED((S8) e); 1412} 1413 1414TEST(MemorySanitizer, strtoull) { 1415 char *e; 1416 assert(1 == strtoull("1", &e, 10)); 1417 EXPECT_NOT_POISONED((S8) e); 1418} 1419 1420TEST(MemorySanitizer, strtoimax) { 1421 char *e; 1422 assert(1 == strtoimax("1", &e, 10)); 1423 EXPECT_NOT_POISONED((S8) e); 1424} 1425 1426TEST(MemorySanitizer, strtoumax) { 1427 char *e; 1428 assert(1 == strtoumax("1", &e, 10)); 1429 EXPECT_NOT_POISONED((S8) e); 1430} 1431 1432TEST(MemorySanitizer, strtod) { 1433 char *e; 1434 assert(0 != strtod("1.5", &e)); 1435 EXPECT_NOT_POISONED((S8) e); 1436} 1437 1438#ifdef __GLIBC__ 1439extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1440TEST(MemorySanitizer, __strtod_l) { 1441 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); 1442 char *e; 1443 assert(0 != __strtod_l("1.5", &e, loc)); 1444 EXPECT_NOT_POISONED((S8) e); 1445 freelocale(loc); 1446} 1447#endif // __GLIBC__ 1448 1449TEST(MemorySanitizer, strtof) { 1450 char *e; 1451 assert(0 != strtof("1.5", &e)); 1452 EXPECT_NOT_POISONED((S8) e); 1453} 1454 1455TEST(MemorySanitizer, strtold) { 1456 char *e; 1457 assert(0 != strtold("1.5", &e)); 1458 EXPECT_NOT_POISONED((S8) e); 1459} 1460 1461TEST(MemorySanitizer, modf) { 1462 double x, y; 1463 x = modf(2.1, &y); 1464 EXPECT_NOT_POISONED(y); 1465} 1466 1467TEST(MemorySanitizer, modff) { 1468 float x, y; 1469 x = modff(2.1, &y); 1470 EXPECT_NOT_POISONED(y); 1471} 1472 1473TEST(MemorySanitizer, modfl) { 1474 long double x, y; 1475 x = modfl(2.1, &y); 1476 EXPECT_NOT_POISONED(y); 1477} 1478 1479TEST(MemorySanitizer, sprintf) { // NOLINT 1480 char buff[10]; 1481 break_optimization(buff); 1482 EXPECT_POISONED(buff[0]); 1483 int res = sprintf(buff, "%d", 1234567); // NOLINT 1484 assert(res == 7); 1485 assert(buff[0] == '1'); 1486 assert(buff[1] == '2'); 1487 assert(buff[2] == '3'); 1488 assert(buff[6] == '7'); 1489 assert(buff[7] == 0); 1490 EXPECT_POISONED(buff[8]); 1491} 1492 1493TEST(MemorySanitizer, snprintf) { 1494 char buff[10]; 1495 break_optimization(buff); 1496 EXPECT_POISONED(buff[0]); 1497 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1498 assert(res == 7); 1499 assert(buff[0] == '1'); 1500 assert(buff[1] == '2'); 1501 assert(buff[2] == '3'); 1502 assert(buff[6] == '7'); 1503 assert(buff[7] == 0); 1504 EXPECT_POISONED(buff[8]); 1505} 1506 1507TEST(MemorySanitizer, swprintf) { 1508 wchar_t buff[10]; 1509 assert(sizeof(wchar_t) == 4); 1510 break_optimization(buff); 1511 EXPECT_POISONED(buff[0]); 1512 int res = swprintf(buff, 9, L"%d", 1234567); 1513 assert(res == 7); 1514 assert(buff[0] == '1'); 1515 assert(buff[1] == '2'); 1516 assert(buff[2] == '3'); 1517 assert(buff[6] == '7'); 1518 assert(buff[7] == 0); 1519 EXPECT_POISONED(buff[8]); 1520} 1521 1522TEST(MemorySanitizer, asprintf) { // NOLINT 1523 char *pbuf; 1524 EXPECT_POISONED(pbuf); 1525 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1526 assert(res == 7); 1527 EXPECT_NOT_POISONED(pbuf); 1528 assert(pbuf[0] == '1'); 1529 assert(pbuf[1] == '2'); 1530 assert(pbuf[2] == '3'); 1531 assert(pbuf[6] == '7'); 1532 assert(pbuf[7] == 0); 1533 free(pbuf); 1534} 1535 1536TEST(MemorySanitizer, mbstowcs) { 1537 const char *x = "abc"; 1538 wchar_t buff[10]; 1539 int res = mbstowcs(buff, x, 2); 1540 EXPECT_EQ(2, res); 1541 EXPECT_EQ(L'a', buff[0]); 1542 EXPECT_EQ(L'b', buff[1]); 1543 EXPECT_POISONED(buff[2]); 1544 res = mbstowcs(buff, x, 10); 1545 EXPECT_EQ(3, res); 1546 EXPECT_NOT_POISONED(buff[3]); 1547} 1548 1549TEST(MemorySanitizer, wcstombs) { 1550 const wchar_t *x = L"abc"; 1551 char buff[10]; 1552 int res = wcstombs(buff, x, 4); 1553 EXPECT_EQ(res, 3); 1554 EXPECT_EQ(buff[0], 'a'); 1555 EXPECT_EQ(buff[1], 'b'); 1556 EXPECT_EQ(buff[2], 'c'); 1557} 1558 1559TEST(MemorySanitizer, wcsrtombs) { 1560 const wchar_t *x = L"abc"; 1561 const wchar_t *p = x; 1562 char buff[10]; 1563 mbstate_t mbs; 1564 memset(&mbs, 0, sizeof(mbs)); 1565 int res = wcsrtombs(buff, &p, 4, &mbs); 1566 EXPECT_EQ(res, 3); 1567 EXPECT_EQ(buff[0], 'a'); 1568 EXPECT_EQ(buff[1], 'b'); 1569 EXPECT_EQ(buff[2], 'c'); 1570 EXPECT_EQ(buff[3], '\0'); 1571 EXPECT_POISONED(buff[4]); 1572} 1573 1574TEST(MemorySanitizer, wcsnrtombs) { 1575 const wchar_t *x = L"abc"; 1576 const wchar_t *p = x; 1577 char buff[10]; 1578 mbstate_t mbs; 1579 memset(&mbs, 0, sizeof(mbs)); 1580 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1581 EXPECT_EQ(res, 2); 1582 EXPECT_EQ(buff[0], 'a'); 1583 EXPECT_EQ(buff[1], 'b'); 1584 EXPECT_POISONED(buff[2]); 1585} 1586 1587TEST(MemorySanitizer, mbtowc) { 1588 const char *x = "abc"; 1589 wchar_t wx; 1590 int res = mbtowc(&wx, x, 3); 1591 EXPECT_GT(res, 0); 1592 EXPECT_NOT_POISONED(wx); 1593} 1594 1595TEST(MemorySanitizer, mbrtowc) { 1596 const char *x = "abc"; 1597 wchar_t wx; 1598 mbstate_t mbs; 1599 memset(&mbs, 0, sizeof(mbs)); 1600 int res = mbrtowc(&wx, x, 3, &mbs); 1601 EXPECT_GT(res, 0); 1602 EXPECT_NOT_POISONED(wx); 1603} 1604 1605TEST(MemorySanitizer, gettimeofday) { 1606 struct timeval tv; 1607 struct timezone tz; 1608 break_optimization(&tv); 1609 break_optimization(&tz); 1610 assert(sizeof(tv) == 16); 1611 assert(sizeof(tz) == 8); 1612 EXPECT_POISONED(tv.tv_sec); 1613 EXPECT_POISONED(tv.tv_usec); 1614 EXPECT_POISONED(tz.tz_minuteswest); 1615 EXPECT_POISONED(tz.tz_dsttime); 1616 assert(0 == gettimeofday(&tv, &tz)); 1617 EXPECT_NOT_POISONED(tv.tv_sec); 1618 EXPECT_NOT_POISONED(tv.tv_usec); 1619 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1620 EXPECT_NOT_POISONED(tz.tz_dsttime); 1621} 1622 1623TEST(MemorySanitizer, clock_gettime) { 1624 struct timespec tp; 1625 EXPECT_POISONED(tp.tv_sec); 1626 EXPECT_POISONED(tp.tv_nsec); 1627 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1628 EXPECT_NOT_POISONED(tp.tv_sec); 1629 EXPECT_NOT_POISONED(tp.tv_nsec); 1630} 1631 1632TEST(MemorySanitizer, clock_getres) { 1633 struct timespec tp; 1634 EXPECT_POISONED(tp.tv_sec); 1635 EXPECT_POISONED(tp.tv_nsec); 1636 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1637 EXPECT_POISONED(tp.tv_sec); 1638 EXPECT_POISONED(tp.tv_nsec); 1639 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1640 EXPECT_NOT_POISONED(tp.tv_sec); 1641 EXPECT_NOT_POISONED(tp.tv_nsec); 1642} 1643 1644TEST(MemorySanitizer, getitimer) { 1645 struct itimerval it1, it2; 1646 int res; 1647 EXPECT_POISONED(it1.it_interval.tv_sec); 1648 EXPECT_POISONED(it1.it_interval.tv_usec); 1649 EXPECT_POISONED(it1.it_value.tv_sec); 1650 EXPECT_POISONED(it1.it_value.tv_usec); 1651 res = getitimer(ITIMER_VIRTUAL, &it1); 1652 assert(!res); 1653 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1654 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1655 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1656 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1657 1658 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1659 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1660 1661 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1662 assert(!res); 1663 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1664 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1665 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1666 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1667 1668 // Check that old_value can be 0, and disable the timer. 1669 memset(&it1, 0, sizeof(it1)); 1670 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1671 assert(!res); 1672} 1673 1674TEST(MemorySanitizer, setitimer_null) { 1675 setitimer(ITIMER_VIRTUAL, 0, 0); 1676 // Not testing the return value, since it the behaviour seems to differ 1677 // between libc implementations and POSIX. 1678 // Should never crash, though. 1679} 1680 1681TEST(MemorySanitizer, time) { 1682 time_t t; 1683 EXPECT_POISONED(t); 1684 time_t t2 = time(&t); 1685 assert(t2 != (time_t)-1); 1686 EXPECT_NOT_POISONED(t); 1687} 1688 1689TEST(MemorySanitizer, localtime) { 1690 time_t t = 123; 1691 struct tm *time = localtime(&t); 1692 assert(time != 0); 1693 EXPECT_NOT_POISONED(time->tm_sec); 1694 EXPECT_NOT_POISONED(time->tm_hour); 1695 EXPECT_NOT_POISONED(time->tm_year); 1696 EXPECT_NOT_POISONED(time->tm_isdst); 1697 EXPECT_NE(0, strlen(time->tm_zone)); 1698} 1699 1700TEST(MemorySanitizer, localtime_r) { 1701 time_t t = 123; 1702 struct tm time; 1703 struct tm *res = localtime_r(&t, &time); 1704 assert(res != 0); 1705 EXPECT_NOT_POISONED(time.tm_sec); 1706 EXPECT_NOT_POISONED(time.tm_hour); 1707 EXPECT_NOT_POISONED(time.tm_year); 1708 EXPECT_NOT_POISONED(time.tm_isdst); 1709 EXPECT_NE(0, strlen(time.tm_zone)); 1710} 1711 1712TEST(MemorySanitizer, getmntent) { 1713 FILE *fp = setmntent("/etc/fstab", "r"); 1714 struct mntent *mnt = getmntent(fp); 1715 ASSERT_NE((void *)0, mnt); 1716 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1717 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1718 ASSERT_NE(0, strlen(mnt->mnt_type)); 1719 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1720 EXPECT_NOT_POISONED(mnt->mnt_freq); 1721 EXPECT_NOT_POISONED(mnt->mnt_passno); 1722 fclose(fp); 1723} 1724 1725TEST(MemorySanitizer, getmntent_r) { 1726 FILE *fp = setmntent("/etc/fstab", "r"); 1727 struct mntent mntbuf; 1728 char buf[1000]; 1729 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 1730 ASSERT_NE((void *)0, mnt); 1731 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1732 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1733 ASSERT_NE(0, strlen(mnt->mnt_type)); 1734 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1735 EXPECT_NOT_POISONED(mnt->mnt_freq); 1736 EXPECT_NOT_POISONED(mnt->mnt_passno); 1737 fclose(fp); 1738} 1739 1740TEST(MemorySanitizer, ether) { 1741 const char *asc = "11:22:33:44:55:66"; 1742 struct ether_addr *paddr = ether_aton(asc); 1743 EXPECT_NOT_POISONED(*paddr); 1744 1745 struct ether_addr addr; 1746 paddr = ether_aton_r(asc, &addr); 1747 ASSERT_EQ(paddr, &addr); 1748 EXPECT_NOT_POISONED(addr); 1749 1750 char *s = ether_ntoa(&addr); 1751 ASSERT_NE(0, strlen(s)); 1752 1753 char buf[100]; 1754 s = ether_ntoa_r(&addr, buf); 1755 ASSERT_EQ(s, buf); 1756 ASSERT_NE(0, strlen(buf)); 1757} 1758 1759TEST(MemorySanitizer, mmap) { 1760 const int size = 4096; 1761 void *p1, *p2; 1762 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1763 __msan_poison(p1, size); 1764 munmap(p1, size); 1765 for (int i = 0; i < 1000; i++) { 1766 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1767 if (p2 == p1) 1768 break; 1769 else 1770 munmap(p2, size); 1771 } 1772 if (p1 == p2) { 1773 EXPECT_NOT_POISONED(*(char*)p2); 1774 munmap(p2, size); 1775 } 1776} 1777 1778// FIXME: enable and add ecvt. 1779// FIXME: check why msandr does nt handle fcvt. 1780TEST(MemorySanitizer, fcvt) { 1781 int a, b; 1782 break_optimization(&a); 1783 break_optimization(&b); 1784 EXPECT_POISONED(a); 1785 EXPECT_POISONED(b); 1786 char *str = fcvt(12345.6789, 10, &a, &b); 1787 EXPECT_NOT_POISONED(a); 1788 EXPECT_NOT_POISONED(b); 1789} 1790 1791TEST(MemorySanitizer, frexp) { 1792 int x; 1793 x = *GetPoisoned<int>(); 1794 double r = frexp(1.1, &x); 1795 EXPECT_NOT_POISONED(r); 1796 EXPECT_NOT_POISONED(x); 1797 1798 x = *GetPoisoned<int>(); 1799 float rf = frexpf(1.1, &x); 1800 EXPECT_NOT_POISONED(rf); 1801 EXPECT_NOT_POISONED(x); 1802 1803 x = *GetPoisoned<int>(); 1804 double rl = frexpl(1.1, &x); 1805 EXPECT_NOT_POISONED(rl); 1806 EXPECT_NOT_POISONED(x); 1807} 1808 1809namespace { 1810 1811static int cnt; 1812 1813void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1814 assert(signo == SIGPROF); 1815 assert(si); 1816 EXPECT_NOT_POISONED(si->si_errno); 1817 EXPECT_NOT_POISONED(si->si_pid); 1818#if __linux__ 1819# if defined(__x86_64__) 1820 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1821# elif defined(__i386__) 1822 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1823# endif 1824#endif 1825 ++cnt; 1826} 1827 1828TEST(MemorySanitizer, sigaction) { 1829 struct sigaction act = {}; 1830 struct sigaction oldact = {}; 1831 struct sigaction origact = {}; 1832 1833 sigaction(SIGPROF, 0, &origact); 1834 1835 act.sa_flags |= SA_SIGINFO; 1836 act.sa_sigaction = &SigactionHandler; 1837 sigaction(SIGPROF, &act, 0); 1838 1839 kill(getpid(), SIGPROF); 1840 1841 act.sa_flags &= ~SA_SIGINFO; 1842 act.sa_handler = SIG_DFL; 1843 sigaction(SIGPROF, &act, 0); 1844 1845 act.sa_flags &= ~SA_SIGINFO; 1846 act.sa_handler = SIG_IGN; 1847 sigaction(SIGPROF, &act, &oldact); 1848 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1849 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1850 kill(getpid(), SIGPROF); 1851 1852 act.sa_flags |= SA_SIGINFO; 1853 act.sa_sigaction = &SigactionHandler; 1854 sigaction(SIGPROF, &act, &oldact); 1855 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1856 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1857 kill(getpid(), SIGPROF); 1858 1859 act.sa_flags &= ~SA_SIGINFO; 1860 act.sa_handler = SIG_DFL; 1861 sigaction(SIGPROF, &act, &oldact); 1862 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1863 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1864 EXPECT_EQ(2, cnt); 1865 1866 sigaction(SIGPROF, &origact, 0); 1867} 1868 1869} // namespace 1870 1871 1872TEST(MemorySanitizer, sigemptyset) { 1873 sigset_t s; 1874 EXPECT_POISONED(s); 1875 int res = sigemptyset(&s); 1876 ASSERT_EQ(0, res); 1877 EXPECT_NOT_POISONED(s); 1878} 1879 1880TEST(MemorySanitizer, sigfillset) { 1881 sigset_t s; 1882 EXPECT_POISONED(s); 1883 int res = sigfillset(&s); 1884 ASSERT_EQ(0, res); 1885 EXPECT_NOT_POISONED(s); 1886} 1887 1888TEST(MemorySanitizer, sigpending) { 1889 sigset_t s; 1890 EXPECT_POISONED(s); 1891 int res = sigpending(&s); 1892 ASSERT_EQ(0, res); 1893 EXPECT_NOT_POISONED(s); 1894} 1895 1896TEST(MemorySanitizer, sigprocmask) { 1897 sigset_t s; 1898 EXPECT_POISONED(s); 1899 int res = sigprocmask(SIG_BLOCK, 0, &s); 1900 ASSERT_EQ(0, res); 1901 EXPECT_NOT_POISONED(s); 1902} 1903 1904struct StructWithDtor { 1905 ~StructWithDtor(); 1906}; 1907 1908NOINLINE StructWithDtor::~StructWithDtor() { 1909 break_optimization(0); 1910} 1911 1912TEST(MemorySanitizer, Invoke) { 1913 StructWithDtor s; // Will cause the calls to become invokes. 1914 EXPECT_NOT_POISONED(0); 1915 EXPECT_POISONED(*GetPoisoned<int>()); 1916 EXPECT_NOT_POISONED(0); 1917 EXPECT_POISONED(*GetPoisoned<int>()); 1918 EXPECT_POISONED(ReturnPoisoned<S4>()); 1919} 1920 1921TEST(MemorySanitizer, ptrtoint) { 1922 // Test that shadow is propagated through pointer-to-integer conversion. 1923 void* p = (void*)0xABCD; 1924 __msan_poison(((char*)&p) + 1, sizeof(p)); 1925 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1926 1927 void* q = (void*)0xABCD; 1928 __msan_poison(&q, sizeof(q) - 1); 1929 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1930} 1931 1932static void vaargsfn2(int guard, ...) { 1933 va_list vl; 1934 va_start(vl, guard); 1935 EXPECT_NOT_POISONED(va_arg(vl, int)); 1936 EXPECT_NOT_POISONED(va_arg(vl, int)); 1937 EXPECT_NOT_POISONED(va_arg(vl, int)); 1938 EXPECT_POISONED(va_arg(vl, double)); 1939 va_end(vl); 1940} 1941 1942static void vaargsfn(int guard, ...) { 1943 va_list vl; 1944 va_start(vl, guard); 1945 EXPECT_NOT_POISONED(va_arg(vl, int)); 1946 EXPECT_POISONED(va_arg(vl, int)); 1947 // The following call will overwrite __msan_param_tls. 1948 // Checks after it test that arg shadow was somehow saved across the call. 1949 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1950 EXPECT_NOT_POISONED(va_arg(vl, int)); 1951 EXPECT_POISONED(va_arg(vl, int)); 1952 va_end(vl); 1953} 1954 1955TEST(MemorySanitizer, VAArgTest) { 1956 int* x = GetPoisoned<int>(); 1957 int* y = GetPoisoned<int>(4); 1958 vaargsfn(1, 13, *x, 42, *y); 1959} 1960 1961static void vaargsfn_many(int guard, ...) { 1962 va_list vl; 1963 va_start(vl, guard); 1964 EXPECT_NOT_POISONED(va_arg(vl, int)); 1965 EXPECT_POISONED(va_arg(vl, int)); 1966 EXPECT_NOT_POISONED(va_arg(vl, int)); 1967 EXPECT_NOT_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_POISONED(va_arg(vl, int)); 1974 va_end(vl); 1975} 1976 1977TEST(MemorySanitizer, VAArgManyTest) { 1978 int* x = GetPoisoned<int>(); 1979 int* y = GetPoisoned<int>(4); 1980 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 1981} 1982 1983static void vaargsfn_pass2(va_list vl) { 1984 EXPECT_NOT_POISONED(va_arg(vl, int)); 1985 EXPECT_NOT_POISONED(va_arg(vl, int)); 1986 EXPECT_POISONED(va_arg(vl, int)); 1987} 1988 1989static void vaargsfn_pass(int guard, ...) { 1990 va_list vl; 1991 va_start(vl, guard); 1992 EXPECT_POISONED(va_arg(vl, int)); 1993 vaargsfn_pass2(vl); 1994 va_end(vl); 1995} 1996 1997TEST(MemorySanitizer, VAArgPass) { 1998 int* x = GetPoisoned<int>(); 1999 int* y = GetPoisoned<int>(4); 2000 vaargsfn_pass(1, *x, 2, 3, *y); 2001} 2002 2003static void vaargsfn_copy2(va_list vl) { 2004 EXPECT_NOT_POISONED(va_arg(vl, int)); 2005 EXPECT_POISONED(va_arg(vl, int)); 2006} 2007 2008static void vaargsfn_copy(int guard, ...) { 2009 va_list vl; 2010 va_start(vl, guard); 2011 EXPECT_NOT_POISONED(va_arg(vl, int)); 2012 EXPECT_POISONED(va_arg(vl, int)); 2013 va_list vl2; 2014 va_copy(vl2, vl); 2015 vaargsfn_copy2(vl2); 2016 EXPECT_NOT_POISONED(va_arg(vl, int)); 2017 EXPECT_POISONED(va_arg(vl, int)); 2018 va_end(vl); 2019} 2020 2021TEST(MemorySanitizer, VAArgCopy) { 2022 int* x = GetPoisoned<int>(); 2023 int* y = GetPoisoned<int>(4); 2024 vaargsfn_copy(1, 2, *x, 3, *y); 2025} 2026 2027static void vaargsfn_ptr(int guard, ...) { 2028 va_list vl; 2029 va_start(vl, guard); 2030 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2031 EXPECT_POISONED(va_arg(vl, int*)); 2032 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2033 EXPECT_POISONED(va_arg(vl, double*)); 2034 va_end(vl); 2035} 2036 2037TEST(MemorySanitizer, VAArgPtr) { 2038 int** x = GetPoisoned<int*>(); 2039 double** y = GetPoisoned<double*>(8); 2040 int z; 2041 vaargsfn_ptr(1, &z, *x, &z, *y); 2042} 2043 2044static void vaargsfn_overflow(int guard, ...) { 2045 va_list vl; 2046 va_start(vl, guard); 2047 EXPECT_NOT_POISONED(va_arg(vl, int)); 2048 EXPECT_NOT_POISONED(va_arg(vl, int)); 2049 EXPECT_POISONED(va_arg(vl, int)); 2050 EXPECT_NOT_POISONED(va_arg(vl, int)); 2051 EXPECT_NOT_POISONED(va_arg(vl, int)); 2052 EXPECT_NOT_POISONED(va_arg(vl, int)); 2053 2054 EXPECT_NOT_POISONED(va_arg(vl, double)); 2055 EXPECT_NOT_POISONED(va_arg(vl, double)); 2056 EXPECT_NOT_POISONED(va_arg(vl, double)); 2057 EXPECT_POISONED(va_arg(vl, double)); 2058 EXPECT_NOT_POISONED(va_arg(vl, double)); 2059 EXPECT_POISONED(va_arg(vl, int*)); 2060 EXPECT_NOT_POISONED(va_arg(vl, double)); 2061 EXPECT_NOT_POISONED(va_arg(vl, double)); 2062 2063 EXPECT_POISONED(va_arg(vl, int)); 2064 EXPECT_POISONED(va_arg(vl, double)); 2065 EXPECT_POISONED(va_arg(vl, int*)); 2066 2067 EXPECT_NOT_POISONED(va_arg(vl, int)); 2068 EXPECT_NOT_POISONED(va_arg(vl, double)); 2069 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2070 2071 EXPECT_POISONED(va_arg(vl, int)); 2072 EXPECT_POISONED(va_arg(vl, double)); 2073 EXPECT_POISONED(va_arg(vl, int*)); 2074 2075 va_end(vl); 2076} 2077 2078TEST(MemorySanitizer, VAArgOverflow) { 2079 int* x = GetPoisoned<int>(); 2080 double* y = GetPoisoned<double>(8); 2081 int** p = GetPoisoned<int*>(16); 2082 int z; 2083 vaargsfn_overflow(1, 2084 1, 2, *x, 4, 5, 6, 2085 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2086 // the following args will overflow for sure 2087 *x, *y, *p, 2088 7, 9.9, &z, 2089 *x, *y, *p); 2090} 2091 2092static void vaargsfn_tlsoverwrite2(int guard, ...) { 2093 va_list vl; 2094 va_start(vl, guard); 2095 for (int i = 0; i < 20; ++i) 2096 EXPECT_NOT_POISONED(va_arg(vl, int)); 2097 va_end(vl); 2098} 2099 2100static void vaargsfn_tlsoverwrite(int guard, ...) { 2101 // This call will overwrite TLS contents unless it's backed up somewhere. 2102 vaargsfn_tlsoverwrite2(2, 2103 42, 42, 42, 42, 42, 2104 42, 42, 42, 42, 42, 2105 42, 42, 42, 42, 42, 2106 42, 42, 42, 42, 42); // 20x 2107 va_list vl; 2108 va_start(vl, guard); 2109 for (int i = 0; i < 20; ++i) 2110 EXPECT_POISONED(va_arg(vl, int)); 2111 va_end(vl); 2112} 2113 2114TEST(MemorySanitizer, VAArgTLSOverwrite) { 2115 int* x = GetPoisoned<int>(); 2116 vaargsfn_tlsoverwrite(1, 2117 *x, *x, *x, *x, *x, 2118 *x, *x, *x, *x, *x, 2119 *x, *x, *x, *x, *x, 2120 *x, *x, *x, *x, *x); // 20x 2121 2122} 2123 2124struct StructByVal { 2125 int a, b, c, d, e, f; 2126}; 2127 2128NOINLINE void StructByValTestFunc(struct StructByVal s) { 2129 EXPECT_NOT_POISONED(s.a); 2130 EXPECT_POISONED(s.b); 2131 EXPECT_NOT_POISONED(s.c); 2132 EXPECT_POISONED(s.d); 2133 EXPECT_NOT_POISONED(s.e); 2134 EXPECT_POISONED(s.f); 2135} 2136 2137NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2138 StructByValTestFunc(s); 2139} 2140 2141NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2142 StructByValTestFunc(s); 2143} 2144 2145TEST(MemorySanitizer, StructByVal) { 2146 // Large aggregates are passed as "byval" pointer argument in LLVM. 2147 struct StructByVal s; 2148 s.a = 1; 2149 s.b = *GetPoisoned<int>(); 2150 s.c = 2; 2151 s.d = *GetPoisoned<int>(); 2152 s.e = 3; 2153 s.f = *GetPoisoned<int>(); 2154 StructByValTestFunc(s); 2155 StructByValTestFunc1(s); 2156 StructByValTestFunc2(0, s); 2157} 2158 2159 2160#if MSAN_HAS_M128 2161NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2162NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2163TEST(MemorySanitizer, m128) { 2164 __m128i a = _mm_set1_epi16(0x1234); 2165 __m128i b = _mm_set1_epi16(0x7890); 2166 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2167 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2168} 2169// FIXME: add more tests for __m128i. 2170#endif // MSAN_HAS_M128 2171 2172// We should not complain when copying this poisoned hole. 2173struct StructWithHole { 2174 U4 a; 2175 // 4-byte hole. 2176 U8 b; 2177}; 2178 2179NOINLINE StructWithHole ReturnStructWithHole() { 2180 StructWithHole res; 2181 __msan_poison(&res, sizeof(res)); 2182 res.a = 1; 2183 res.b = 2; 2184 return res; 2185} 2186 2187TEST(MemorySanitizer, StructWithHole) { 2188 StructWithHole a = ReturnStructWithHole(); 2189 break_optimization(&a); 2190} 2191 2192template <class T> 2193NOINLINE T ReturnStruct() { 2194 T res; 2195 __msan_poison(&res, sizeof(res)); 2196 res.a = 1; 2197 return res; 2198} 2199 2200template <class T> 2201NOINLINE void TestReturnStruct() { 2202 T s1 = ReturnStruct<T>(); 2203 EXPECT_NOT_POISONED(s1.a); 2204 EXPECT_POISONED(s1.b); 2205} 2206 2207struct SSS1 { 2208 int a, b, c; 2209}; 2210struct SSS2 { 2211 int b, a, c; 2212}; 2213struct SSS3 { 2214 int b, c, a; 2215}; 2216struct SSS4 { 2217 int c, b, a; 2218}; 2219 2220struct SSS5 { 2221 int a; 2222 float b; 2223}; 2224struct SSS6 { 2225 int a; 2226 double b; 2227}; 2228struct SSS7 { 2229 S8 b; 2230 int a; 2231}; 2232struct SSS8 { 2233 S2 b; 2234 S8 a; 2235}; 2236 2237TEST(MemorySanitizer, IntStruct3) { 2238 TestReturnStruct<SSS1>(); 2239 TestReturnStruct<SSS2>(); 2240 TestReturnStruct<SSS3>(); 2241 TestReturnStruct<SSS4>(); 2242 TestReturnStruct<SSS5>(); 2243 TestReturnStruct<SSS6>(); 2244 TestReturnStruct<SSS7>(); 2245 TestReturnStruct<SSS8>(); 2246} 2247 2248struct LongStruct { 2249 U1 a1, b1; 2250 U2 a2, b2; 2251 U4 a4, b4; 2252 U8 a8, b8; 2253}; 2254 2255NOINLINE LongStruct ReturnLongStruct1() { 2256 LongStruct res; 2257 __msan_poison(&res, sizeof(res)); 2258 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2259 // leaves b1, .., b8 poisoned. 2260 return res; 2261} 2262 2263NOINLINE LongStruct ReturnLongStruct2() { 2264 LongStruct res; 2265 __msan_poison(&res, sizeof(res)); 2266 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2267 // leaves a1, .., a8 poisoned. 2268 return res; 2269} 2270 2271TEST(MemorySanitizer, LongStruct) { 2272 LongStruct s1 = ReturnLongStruct1(); 2273 __msan_print_shadow(&s1, sizeof(s1)); 2274 EXPECT_NOT_POISONED(s1.a1); 2275 EXPECT_NOT_POISONED(s1.a2); 2276 EXPECT_NOT_POISONED(s1.a4); 2277 EXPECT_NOT_POISONED(s1.a8); 2278 2279 EXPECT_POISONED(s1.b1); 2280 EXPECT_POISONED(s1.b2); 2281 EXPECT_POISONED(s1.b4); 2282 EXPECT_POISONED(s1.b8); 2283 2284 LongStruct s2 = ReturnLongStruct2(); 2285 __msan_print_shadow(&s2, sizeof(s2)); 2286 EXPECT_NOT_POISONED(s2.b1); 2287 EXPECT_NOT_POISONED(s2.b2); 2288 EXPECT_NOT_POISONED(s2.b4); 2289 EXPECT_NOT_POISONED(s2.b8); 2290 2291 EXPECT_POISONED(s2.a1); 2292 EXPECT_POISONED(s2.a2); 2293 EXPECT_POISONED(s2.a4); 2294 EXPECT_POISONED(s2.a8); 2295} 2296 2297TEST(MemorySanitizer, getrlimit) { 2298 struct rlimit limit; 2299 __msan_poison(&limit, sizeof(limit)); 2300 int result = getrlimit(RLIMIT_DATA, &limit); 2301 assert(result == 0); 2302 EXPECT_NOT_POISONED(limit.rlim_cur); 2303 EXPECT_NOT_POISONED(limit.rlim_max); 2304} 2305 2306TEST(MemorySanitizer, getrusage) { 2307 struct rusage usage; 2308 __msan_poison(&usage, sizeof(usage)); 2309 int result = getrusage(RUSAGE_SELF, &usage); 2310 assert(result == 0); 2311 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2312 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2313 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2314 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2315 EXPECT_NOT_POISONED(usage.ru_maxrss); 2316 EXPECT_NOT_POISONED(usage.ru_minflt); 2317 EXPECT_NOT_POISONED(usage.ru_majflt); 2318 EXPECT_NOT_POISONED(usage.ru_inblock); 2319 EXPECT_NOT_POISONED(usage.ru_oublock); 2320 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2321 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2322} 2323 2324#ifdef __GLIBC__ 2325extern char *program_invocation_name; 2326#else // __GLIBC__ 2327# error "TODO: port this" 2328#endif 2329 2330static void dladdr_testfn() {} 2331 2332TEST(MemorySanitizer, dladdr) { 2333 Dl_info info; 2334 __msan_poison(&info, sizeof(info)); 2335 int result = dladdr((const void*)dladdr_testfn, &info); 2336 assert(result != 0); 2337 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2338 if (info.dli_fname) 2339 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2340 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2341 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2342 if (info.dli_sname) 2343 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2344 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2345} 2346 2347#ifndef MSAN_TEST_DISABLE_DLOPEN 2348 2349static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2350 (*(int *)data)++; 2351 EXPECT_NOT_POISONED(info->dlpi_addr); 2352 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2353 EXPECT_NOT_POISONED(info->dlpi_phnum); 2354 for (int i = 0; i < info->dlpi_phnum; ++i) 2355 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2356 return 0; 2357} 2358 2359// Compute the path to our loadable DSO. We assume it's in the same 2360// directory. Only use string routines that we intercept so far to do this. 2361static int PathToLoadable(char *buf, size_t sz) { 2362 const char *basename = "libmsan_loadable.x86_64.so"; 2363 char *argv0 = program_invocation_name; 2364 char *last_slash = strrchr(argv0, '/'); 2365 assert(last_slash); 2366 int res = 2367 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2368 return res < sz ? 0 : res; 2369} 2370 2371TEST(MemorySanitizer, dl_iterate_phdr) { 2372 char path[4096]; 2373 int res = PathToLoadable(path, sizeof(path)); 2374 assert(!res); 2375 2376 // Having at least one dlopen'ed library in the process makes this more 2377 // entertaining. 2378 void *lib = dlopen(path, RTLD_LAZY); 2379 ASSERT_NE((void*)0, lib); 2380 2381 int count = 0; 2382 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2383 assert(count > 0); 2384 2385 dlclose(lib); 2386} 2387 2388 2389TEST(MemorySanitizer, dlopen) { 2390 char path[4096]; 2391 int res = PathToLoadable(path, sizeof(path)); 2392 assert(!res); 2393 2394 // We need to clear shadow for globals when doing dlopen. In order to test 2395 // this, we have to poison the shadow for the DSO before we load it. In 2396 // general this is difficult, but the loader tends to reload things in the 2397 // same place, so we open, close, and then reopen. The global should always 2398 // start out clean after dlopen. 2399 for (int i = 0; i < 2; i++) { 2400 void *lib = dlopen(path, RTLD_LAZY); 2401 if (lib == NULL) { 2402 printf("dlerror: %s\n", dlerror()); 2403 assert(lib != NULL); 2404 } 2405 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2406 assert(get_dso_global); 2407 void **dso_global = get_dso_global(); 2408 EXPECT_NOT_POISONED(*dso_global); 2409 __msan_poison(dso_global, sizeof(*dso_global)); 2410 EXPECT_POISONED(*dso_global); 2411 dlclose(lib); 2412 } 2413} 2414 2415// Regression test for a crash in dlopen() interceptor. 2416TEST(MemorySanitizer, dlopenFailed) { 2417 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2418 void *lib = dlopen(path, RTLD_LAZY); 2419 ASSERT_EQ(0, lib); 2420} 2421 2422#endif // MSAN_TEST_DISABLE_DLOPEN 2423 2424TEST(MemorySanitizer, sched_getaffinity) { 2425 cpu_set_t mask; 2426 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2427 ASSERT_EQ(0, res); 2428 EXPECT_NOT_POISONED(mask); 2429} 2430 2431TEST(MemorySanitizer, scanf) { 2432 const char *input = "42 hello"; 2433 int* d = new int; 2434 char* s = new char[7]; 2435 int res = sscanf(input, "%d %5s", d, s); 2436 printf("res %d\n", res); 2437 assert(res == 2); 2438 EXPECT_NOT_POISONED(*d); 2439 EXPECT_NOT_POISONED(s[0]); 2440 EXPECT_NOT_POISONED(s[1]); 2441 EXPECT_NOT_POISONED(s[2]); 2442 EXPECT_NOT_POISONED(s[3]); 2443 EXPECT_NOT_POISONED(s[4]); 2444 EXPECT_NOT_POISONED(s[5]); 2445 EXPECT_POISONED(s[6]); 2446 delete s; 2447 delete d; 2448} 2449 2450static void *SimpleThread_threadfn(void* data) { 2451 return new int; 2452} 2453 2454TEST(MemorySanitizer, SimpleThread) { 2455 pthread_t t; 2456 void *p; 2457 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2458 assert(!res); 2459 EXPECT_NOT_POISONED(t); 2460 res = pthread_join(t, &p); 2461 assert(!res); 2462 EXPECT_NOT_POISONED(p); 2463 delete (int*)p; 2464} 2465 2466static void *SmallStackThread_threadfn(void* data) { 2467 return 0; 2468} 2469 2470TEST(MemorySanitizer, SmallStackThread) { 2471 pthread_attr_t attr; 2472 pthread_t t; 2473 void *p; 2474 int res; 2475 res = pthread_attr_init(&attr); 2476 ASSERT_EQ(0, res); 2477 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2478 ASSERT_EQ(0, res); 2479 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2480 ASSERT_EQ(0, res); 2481 res = pthread_join(t, &p); 2482 ASSERT_EQ(0, res); 2483 res = pthread_attr_destroy(&attr); 2484 ASSERT_EQ(0, res); 2485} 2486 2487TEST(MemorySanitizer, PreAllocatedStackThread) { 2488 pthread_attr_t attr; 2489 pthread_t t; 2490 int res; 2491 res = pthread_attr_init(&attr); 2492 ASSERT_EQ(0, res); 2493 void *stack; 2494 const size_t kStackSize = 64 * 1024; 2495 res = posix_memalign(&stack, 4096, kStackSize); 2496 ASSERT_EQ(0, res); 2497 res = pthread_attr_setstack(&attr, stack, kStackSize); 2498 ASSERT_EQ(0, res); 2499 // A small self-allocated stack can not be extended by the tool. 2500 // In this case pthread_create is expected to fail. 2501 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2502 EXPECT_NE(0, res); 2503 res = pthread_attr_destroy(&attr); 2504 ASSERT_EQ(0, res); 2505} 2506 2507TEST(MemorySanitizer, pthread_attr_get) { 2508 pthread_attr_t attr; 2509 int res; 2510 res = pthread_attr_init(&attr); 2511 ASSERT_EQ(0, res); 2512 { 2513 int v; 2514 res = pthread_attr_getdetachstate(&attr, &v); 2515 ASSERT_EQ(0, res); 2516 EXPECT_NOT_POISONED(v); 2517 } 2518 { 2519 size_t v; 2520 res = pthread_attr_getguardsize(&attr, &v); 2521 ASSERT_EQ(0, res); 2522 EXPECT_NOT_POISONED(v); 2523 } 2524 { 2525 struct sched_param v; 2526 res = pthread_attr_getschedparam(&attr, &v); 2527 ASSERT_EQ(0, res); 2528 EXPECT_NOT_POISONED(v); 2529 } 2530 { 2531 int v; 2532 res = pthread_attr_getschedpolicy(&attr, &v); 2533 ASSERT_EQ(0, res); 2534 EXPECT_NOT_POISONED(v); 2535 } 2536 { 2537 int v; 2538 res = pthread_attr_getinheritsched(&attr, &v); 2539 ASSERT_EQ(0, res); 2540 EXPECT_NOT_POISONED(v); 2541 } 2542 { 2543 int v; 2544 res = pthread_attr_getscope(&attr, &v); 2545 ASSERT_EQ(0, res); 2546 EXPECT_NOT_POISONED(v); 2547 } 2548 { 2549 void *v; 2550 res = pthread_attr_getstackaddr(&attr, &v); 2551 ASSERT_EQ(0, res); 2552 EXPECT_NOT_POISONED(v); 2553 } 2554 { 2555 size_t v; 2556 res = pthread_attr_getstacksize(&attr, &v); 2557 ASSERT_EQ(0, res); 2558 EXPECT_NOT_POISONED(v); 2559 } 2560 { 2561 void *v; 2562 size_t w; 2563 res = pthread_attr_getstack(&attr, &v, &w); 2564 ASSERT_EQ(0, res); 2565 EXPECT_NOT_POISONED(v); 2566 EXPECT_NOT_POISONED(w); 2567 } 2568 { 2569 cpu_set_t v; 2570 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 2571 ASSERT_EQ(0, res); 2572 EXPECT_NOT_POISONED(v); 2573 } 2574 res = pthread_attr_destroy(&attr); 2575 ASSERT_EQ(0, res); 2576} 2577 2578TEST(MemorySanitizer, pthread_getschedparam) { 2579 int policy; 2580 struct sched_param param; 2581 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2582 ASSERT_EQ(0, res); 2583 EXPECT_NOT_POISONED(policy); 2584 EXPECT_NOT_POISONED(param.sched_priority); 2585} 2586 2587TEST(MemorySanitizer, pthread_key_create) { 2588 pthread_key_t key; 2589 int res = pthread_key_create(&key, NULL); 2590 assert(!res); 2591 EXPECT_NOT_POISONED(key); 2592 res = pthread_key_delete(key); 2593 assert(!res); 2594} 2595 2596namespace { 2597struct SignalCondArg { 2598 pthread_cond_t* cond; 2599 pthread_mutex_t* mu; 2600 bool broadcast; 2601}; 2602 2603void *SignalCond(void *param) { 2604 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2605 pthread_mutex_lock(arg->mu); 2606 if (arg->broadcast) 2607 pthread_cond_broadcast(arg->cond); 2608 else 2609 pthread_cond_signal(arg->cond); 2610 pthread_mutex_unlock(arg->mu); 2611 return 0; 2612} 2613} // namespace 2614 2615TEST(MemorySanitizer, pthread_cond_wait) { 2616 pthread_cond_t cond; 2617 pthread_mutex_t mu; 2618 SignalCondArg args = {&cond, &mu, false}; 2619 pthread_cond_init(&cond, 0); 2620 pthread_mutex_init(&mu, 0); 2621 pthread_mutex_lock(&mu); 2622 2623 // signal 2624 pthread_t thr; 2625 pthread_create(&thr, 0, SignalCond, &args); 2626 int res = pthread_cond_wait(&cond, &mu); 2627 assert(!res); 2628 pthread_join(thr, 0); 2629 2630 // broadcast 2631 args.broadcast = true; 2632 pthread_create(&thr, 0, SignalCond, &args); 2633 res = pthread_cond_wait(&cond, &mu); 2634 assert(!res); 2635 pthread_join(thr, 0); 2636 2637 pthread_mutex_unlock(&mu); 2638 pthread_mutex_destroy(&mu); 2639 pthread_cond_destroy(&cond); 2640} 2641 2642TEST(MemorySanitizer, posix_memalign) { 2643 void *p; 2644 EXPECT_POISONED(p); 2645 int res = posix_memalign(&p, 4096, 13); 2646 ASSERT_EQ(0, res); 2647 EXPECT_NOT_POISONED(p); 2648 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2649 free(p); 2650} 2651 2652TEST(MemorySanitizer, memalign) { 2653 void *p = memalign(4096, 13); 2654 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2655 free(p); 2656} 2657 2658TEST(MemorySanitizer, valloc) { 2659 void *a = valloc(100); 2660 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2661 free(a); 2662} 2663 2664TEST(MemorySanitizer, pvalloc) { 2665 void *p = pvalloc(kPageSize + 100); 2666 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2667 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2668 free(p); 2669 2670 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2671 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2672 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2673 free(p); 2674} 2675 2676TEST(MemorySanitizer, inet_pton) { 2677 const char *s = "1:0:0:0:0:0:0:8"; 2678 unsigned char buf[sizeof(struct in6_addr)]; 2679 int res = inet_pton(AF_INET6, s, buf); 2680 ASSERT_EQ(1, res); 2681 EXPECT_NOT_POISONED(buf[0]); 2682 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2683 2684 char s_out[INET6_ADDRSTRLEN]; 2685 EXPECT_POISONED(s_out[3]); 2686 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2687 ASSERT_NE((void*)0, q); 2688 EXPECT_NOT_POISONED(s_out[3]); 2689} 2690 2691TEST(MemorySanitizer, inet_aton) { 2692 const char *s = "127.0.0.1"; 2693 struct in_addr in[2]; 2694 int res = inet_aton(s, in); 2695 ASSERT_NE(0, res); 2696 EXPECT_NOT_POISONED(in[0]); 2697 EXPECT_POISONED(*(char *)(in + 1)); 2698} 2699 2700TEST(MemorySanitizer, uname) { 2701 struct utsname u; 2702 int res = uname(&u); 2703 assert(!res); 2704 EXPECT_NOT_POISONED(strlen(u.sysname)); 2705 EXPECT_NOT_POISONED(strlen(u.nodename)); 2706 EXPECT_NOT_POISONED(strlen(u.release)); 2707 EXPECT_NOT_POISONED(strlen(u.version)); 2708 EXPECT_NOT_POISONED(strlen(u.machine)); 2709} 2710 2711TEST(MemorySanitizer, gethostname) { 2712 char buf[100]; 2713 int res = gethostname(buf, 100); 2714 assert(!res); 2715 EXPECT_NOT_POISONED(strlen(buf)); 2716} 2717 2718TEST(MemorySanitizer, sysinfo) { 2719 struct sysinfo info; 2720 int res = sysinfo(&info); 2721 assert(!res); 2722 EXPECT_NOT_POISONED(info); 2723} 2724 2725TEST(MemorySanitizer, getpwuid) { 2726 struct passwd *p = getpwuid(0); // root 2727 assert(p); 2728 EXPECT_NOT_POISONED(p->pw_name); 2729 assert(p->pw_name); 2730 EXPECT_NOT_POISONED(p->pw_name[0]); 2731 EXPECT_NOT_POISONED(p->pw_uid); 2732 assert(p->pw_uid == 0); 2733} 2734 2735TEST(MemorySanitizer, getpwnam_r) { 2736 struct passwd pwd; 2737 struct passwd *pwdres; 2738 char buf[10000]; 2739 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2740 assert(!res); 2741 EXPECT_NOT_POISONED(pwd.pw_name); 2742 assert(pwd.pw_name); 2743 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2744 EXPECT_NOT_POISONED(pwd.pw_uid); 2745 assert(pwd.pw_uid == 0); 2746} 2747 2748TEST(MemorySanitizer, getpwnam_r_positive) { 2749 struct passwd pwd; 2750 struct passwd *pwdres; 2751 char s[5]; 2752 strncpy(s, "abcd", 5); 2753 __msan_poison(s, 5); 2754 char buf[10000]; 2755 int res; 2756 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2757} 2758 2759TEST(MemorySanitizer, getgrnam_r) { 2760 struct group grp; 2761 struct group *grpres; 2762 char buf[10000]; 2763 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2764 assert(!res); 2765 EXPECT_NOT_POISONED(grp.gr_name); 2766 assert(grp.gr_name); 2767 EXPECT_NOT_POISONED(grp.gr_name[0]); 2768 EXPECT_NOT_POISONED(grp.gr_gid); 2769} 2770 2771TEST(MemorySanitizer, getgroups) { 2772 int n = getgroups(0, 0); 2773 gid_t *gids = new gid_t[n]; 2774 int res = getgroups(n, gids); 2775 ASSERT_EQ(n, res); 2776 for (int i = 0; i < n; ++i) 2777 EXPECT_NOT_POISONED(gids[i]); 2778} 2779 2780TEST(MemorySanitizer, wordexp) { 2781 wordexp_t w; 2782 int res = wordexp("a b c", &w, 0); 2783 ASSERT_EQ(0, res); 2784 ASSERT_EQ(3, w.we_wordc); 2785 ASSERT_STREQ("a", w.we_wordv[0]); 2786 ASSERT_STREQ("b", w.we_wordv[1]); 2787 ASSERT_STREQ("c", w.we_wordv[2]); 2788} 2789 2790template<class T> 2791static bool applySlt(T value, T shadow) { 2792 __msan_partial_poison(&value, &shadow, sizeof(T)); 2793 volatile bool zzz = true; 2794 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2795 // a shift-and-trunc to get at the highest bit. 2796 volatile bool v = value < 0 || zzz; 2797 return v; 2798} 2799 2800TEST(MemorySanitizer, SignedCompareWithZero) { 2801 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2802 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2803 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2804 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2805 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2806 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2807} 2808 2809template <class T, class S> 2810static T poisoned(T Va, S Sa) { 2811 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2812 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2813 T a; 2814 a = Va; 2815 __msan_partial_poison(&a, &Sa, sizeof(T)); 2816 return a; 2817} 2818 2819TEST(MemorySanitizer, ICmpRelational) { 2820 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2821 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2822 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2823 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2824 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2825 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2826 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2827 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2828 poisoned(-1, 0xFFFFFFFFU)); 2829 2830 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2831 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2832 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2833 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2834 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2835 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2836 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2837 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2838 poisoned(-1, 0xFFFFFFFFU)); 2839 2840 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2841 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2842 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2843 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2844 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2845 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2846 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2847 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2848 poisoned(-1, 0xFFFFFFFFU)); 2849 2850 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2851 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2852 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2853 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2854 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2855 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2856 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2857 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2858 poisoned(-1, 0xFFFFFFFFU)); 2859 2860 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2861 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2862 2863 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2864} 2865 2866#if MSAN_HAS_M128 2867TEST(MemorySanitizer, ICmpVectorRelational) { 2868 EXPECT_NOT_POISONED( 2869 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2870 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2871 EXPECT_NOT_POISONED( 2872 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2873 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2874 EXPECT_POISONED( 2875 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2876 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2877 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2878 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2879} 2880#endif 2881 2882// Volatile bitfield store is implemented as load-mask-store 2883// Test that we don't warn on the store of (uninitialized) padding. 2884struct VolatileBitfieldStruct { 2885 volatile unsigned x : 1; 2886 unsigned y : 1; 2887}; 2888 2889TEST(MemorySanitizer, VolatileBitfield) { 2890 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2891 S->x = 1; 2892 EXPECT_NOT_POISONED((unsigned)S->x); 2893 EXPECT_POISONED((unsigned)S->y); 2894} 2895 2896TEST(MemorySanitizer, UnalignedLoad) { 2897 char x[32]; 2898 memset(x + 8, 0, 16); 2899 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2900 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2901 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2902 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2903 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2904 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2905 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2906 2907 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2908 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2909 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2910 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2911 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2912 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2913 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2914 2915 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2916 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2917 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2918 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2919 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2920 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2921 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2922 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2923 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2924} 2925 2926TEST(MemorySanitizer, UnalignedStore16) { 2927 char x[5]; 2928 U2 y = 0; 2929 __msan_poison(&y, 1); 2930 __sanitizer_unaligned_store16(x + 1, y); 2931 EXPECT_POISONED(x[0]); 2932 EXPECT_POISONED(x[1]); 2933 EXPECT_NOT_POISONED(x[2]); 2934 EXPECT_POISONED(x[3]); 2935 EXPECT_POISONED(x[4]); 2936} 2937 2938TEST(MemorySanitizer, UnalignedStore32) { 2939 char x[8]; 2940 U4 y4 = 0; 2941 __msan_poison(&y4, 2); 2942 __sanitizer_unaligned_store32(x+3, y4); 2943 EXPECT_POISONED(x[0]); 2944 EXPECT_POISONED(x[1]); 2945 EXPECT_POISONED(x[2]); 2946 EXPECT_POISONED(x[3]); 2947 EXPECT_POISONED(x[4]); 2948 EXPECT_NOT_POISONED(x[5]); 2949 EXPECT_NOT_POISONED(x[6]); 2950 EXPECT_POISONED(x[7]); 2951} 2952 2953TEST(MemorySanitizer, UnalignedStore64) { 2954 char x[16]; 2955 U8 y = 0; 2956 __msan_poison(&y, 3); 2957 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2958 __sanitizer_unaligned_store64(x+3, y); 2959 EXPECT_POISONED(x[0]); 2960 EXPECT_POISONED(x[1]); 2961 EXPECT_POISONED(x[2]); 2962 EXPECT_POISONED(x[3]); 2963 EXPECT_POISONED(x[4]); 2964 EXPECT_POISONED(x[5]); 2965 EXPECT_NOT_POISONED(x[6]); 2966 EXPECT_NOT_POISONED(x[7]); 2967 EXPECT_NOT_POISONED(x[8]); 2968 EXPECT_POISONED(x[9]); 2969 EXPECT_NOT_POISONED(x[10]); 2970 EXPECT_POISONED(x[11]); 2971} 2972 2973TEST(MemorySanitizerDr, StoreInDSOTest) { 2974 if (!__msan_has_dynamic_component()) return; 2975 char* s = new char[10]; 2976 dso_memfill(s, 9); 2977 EXPECT_NOT_POISONED(s[5]); 2978 EXPECT_POISONED(s[9]); 2979} 2980 2981int return_poisoned_int() { 2982 return ReturnPoisoned<U8>(); 2983} 2984 2985TEST(MemorySanitizerDr, ReturnFromDSOTest) { 2986 if (!__msan_has_dynamic_component()) return; 2987 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 2988} 2989 2990NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 2991 EXPECT_POISONED(x); 2992 EXPECT_POISONED(y); 2993 EXPECT_POISONED(z); 2994 return 0; 2995} 2996 2997static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 2998 EXPECT_NOT_POISONED(x); 2999 EXPECT_NOT_POISONED(y); 3000 EXPECT_NOT_POISONED(z); 3001 return 0; 3002} 3003 3004TEST(MemorySanitizerDr, CallFromDSOTest) { 3005 if (!__msan_has_dynamic_component()) return; 3006 S8* x = GetPoisoned<S8>(); 3007 S8* y = GetPoisoned<S8>(); 3008 S8* z = GetPoisoned<S8>(); 3009 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 3010 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 3011} 3012 3013static void StackStoreInDSOFn(int* x, int* y) { 3014 EXPECT_NOT_POISONED(*x); 3015 EXPECT_NOT_POISONED(*y); 3016} 3017 3018TEST(MemorySanitizerDr, StackStoreInDSOTest) { 3019 if (!__msan_has_dynamic_component()) return; 3020 dso_stack_store(StackStoreInDSOFn, 1); 3021} 3022 3023TEST(MemorySanitizerOrigins, SetGet) { 3024 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 3025 if (!TrackingOrigins()) return; 3026 int x; 3027 __msan_set_origin(&x, sizeof(x), 1234); 3028 EXPECT_EQ(1234, __msan_get_origin(&x)); 3029 __msan_set_origin(&x, sizeof(x), 5678); 3030 EXPECT_EQ(5678, __msan_get_origin(&x)); 3031 __msan_set_origin(&x, sizeof(x), 0); 3032 EXPECT_EQ(0, __msan_get_origin(&x)); 3033} 3034 3035namespace { 3036struct S { 3037 U4 dummy; 3038 U2 a; 3039 U2 b; 3040}; 3041 3042// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 3043TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 3044 if (!TrackingOrigins()) return; 3045 3046 S s; 3047 U4 origin = rand(); // NOLINT 3048 s.a = *GetPoisonedO<U2>(0, origin); 3049 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3050 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3051 3052 s.b = 42; 3053 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3054 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3055} 3056} // namespace 3057 3058template<class T, class BinaryOp> 3059INLINE 3060void BinaryOpOriginTest(BinaryOp op) { 3061 U4 ox = rand(); //NOLINT 3062 U4 oy = rand(); //NOLINT 3063 T *x = GetPoisonedO<T>(0, ox, 0); 3064 T *y = GetPoisonedO<T>(1, oy, 0); 3065 T *z = GetPoisonedO<T>(2, 0, 0); 3066 3067 *z = op(*x, *y); 3068 U4 origin = __msan_get_origin(z); 3069 EXPECT_POISONED_O(*z, origin); 3070 EXPECT_EQ(true, origin == ox || origin == oy); 3071 3072 // y is poisoned, x is not. 3073 *x = 10101; 3074 *y = *GetPoisonedO<T>(1, oy); 3075 break_optimization(x); 3076 __msan_set_origin(z, sizeof(*z), 0); 3077 *z = op(*x, *y); 3078 EXPECT_POISONED_O(*z, oy); 3079 EXPECT_EQ(__msan_get_origin(z), oy); 3080 3081 // x is poisoned, y is not. 3082 *x = *GetPoisonedO<T>(0, ox); 3083 *y = 10101010; 3084 break_optimization(y); 3085 __msan_set_origin(z, sizeof(*z), 0); 3086 *z = op(*x, *y); 3087 EXPECT_POISONED_O(*z, ox); 3088 EXPECT_EQ(__msan_get_origin(z), ox); 3089} 3090 3091template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 3092template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 3093template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 3094template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 3095template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 3096template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 3097 3098TEST(MemorySanitizerOrigins, BinaryOp) { 3099 if (!TrackingOrigins()) return; 3100 BinaryOpOriginTest<S8>(XOR<S8>); 3101 BinaryOpOriginTest<U8>(ADD<U8>); 3102 BinaryOpOriginTest<S4>(SUB<S4>); 3103 BinaryOpOriginTest<S4>(MUL<S4>); 3104 BinaryOpOriginTest<U4>(OR<U4>); 3105 BinaryOpOriginTest<U4>(AND<U4>); 3106 BinaryOpOriginTest<double>(ADD<U4>); 3107 BinaryOpOriginTest<float>(ADD<S4>); 3108 BinaryOpOriginTest<double>(ADD<double>); 3109 BinaryOpOriginTest<float>(ADD<double>); 3110} 3111 3112TEST(MemorySanitizerOrigins, Unary) { 3113 if (!TrackingOrigins()) return; 3114 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3115 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3116 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3117 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3118 3119 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3120 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3121 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3122 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3123 3124 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3125 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3126 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3127 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3128 3129 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3130 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3131 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3132 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3133 3134 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3135 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 3136} 3137 3138TEST(MemorySanitizerOrigins, EQ) { 3139 if (!TrackingOrigins()) return; 3140 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 3141 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 3142 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 3143} 3144 3145TEST(MemorySanitizerOrigins, DIV) { 3146 if (!TrackingOrigins()) return; 3147 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 3148 unsigned o = __LINE__; 3149 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 3150} 3151 3152TEST(MemorySanitizerOrigins, SHIFT) { 3153 if (!TrackingOrigins()) return; 3154 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 3155 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 3156 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 3157 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 3158 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3159 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3160} 3161 3162template<class T, int N> 3163void MemCpyTest() { 3164 int ox = __LINE__; 3165 T *x = new T[N]; 3166 T *y = new T[N]; 3167 T *z = new T[N]; 3168 T *q = new T[N]; 3169 __msan_poison(x, N * sizeof(T)); 3170 __msan_set_origin(x, N * sizeof(T), ox); 3171 __msan_set_origin(y, N * sizeof(T), 777777); 3172 __msan_set_origin(z, N * sizeof(T), 888888); 3173 EXPECT_NOT_POISONED(x); 3174 memcpy(y, x, N * sizeof(T)); 3175 EXPECT_POISONED_O(y[0], ox); 3176 EXPECT_POISONED_O(y[N/2], ox); 3177 EXPECT_POISONED_O(y[N-1], ox); 3178 EXPECT_NOT_POISONED(x); 3179 void *res = mempcpy(q, x, N * sizeof(T)); 3180 ASSERT_EQ(q + N, res); 3181 EXPECT_POISONED_O(q[0], ox); 3182 EXPECT_POISONED_O(q[N/2], ox); 3183 EXPECT_POISONED_O(q[N-1], ox); 3184 EXPECT_NOT_POISONED(x); 3185 memmove(z, x, N * sizeof(T)); 3186 EXPECT_POISONED_O(z[0], ox); 3187 EXPECT_POISONED_O(z[N/2], ox); 3188 EXPECT_POISONED_O(z[N-1], ox); 3189} 3190 3191TEST(MemorySanitizerOrigins, LargeMemCpy) { 3192 if (!TrackingOrigins()) return; 3193 MemCpyTest<U1, 10000>(); 3194 MemCpyTest<U8, 10000>(); 3195} 3196 3197TEST(MemorySanitizerOrigins, SmallMemCpy) { 3198 if (!TrackingOrigins()) return; 3199 MemCpyTest<U8, 1>(); 3200 MemCpyTest<U8, 2>(); 3201 MemCpyTest<U8, 3>(); 3202} 3203 3204TEST(MemorySanitizerOrigins, Select) { 3205 if (!TrackingOrigins()) return; 3206 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 3207 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3208 S4 x; 3209 break_optimization(&x); 3210 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 3211 3212 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 3213 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 3214} 3215 3216extern "C" 3217NOINLINE char AllocaTO() { 3218 int ar[100]; 3219 break_optimization(ar); 3220 return ar[10]; 3221 // fprintf(stderr, "Descr: %s\n", 3222 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 3223} 3224 3225TEST(MemorySanitizerOrigins, Alloca) { 3226 if (!TrackingOrigins()) return; 3227 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3228 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3229 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3230 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3231} 3232 3233// FIXME: replace with a lit-like test. 3234TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 3235 if (!TrackingOrigins()) return; 3236 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 3237} 3238 3239NOINLINE int RetvalOriginTest(U4 origin) { 3240 int *a = new int; 3241 break_optimization(a); 3242 __msan_set_origin(a, sizeof(*a), origin); 3243 int res = *a; 3244 delete a; 3245 return res; 3246} 3247 3248TEST(MemorySanitizerOrigins, Retval) { 3249 if (!TrackingOrigins()) return; 3250 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3251} 3252 3253NOINLINE void ParamOriginTest(int param, U4 origin) { 3254 EXPECT_POISONED_O(param, origin); 3255} 3256 3257TEST(MemorySanitizerOrigins, Param) { 3258 if (!TrackingOrigins()) return; 3259 int *a = new int; 3260 U4 origin = __LINE__; 3261 break_optimization(a); 3262 __msan_set_origin(a, sizeof(*a), origin); 3263 ParamOriginTest(*a, origin); 3264 delete a; 3265} 3266 3267TEST(MemorySanitizerOrigins, Invoke) { 3268 if (!TrackingOrigins()) return; 3269 StructWithDtor s; // Will cause the calls to become invokes. 3270 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3271} 3272 3273TEST(MemorySanitizerOrigins, strlen) { 3274 S8 alignment; 3275 break_optimization(&alignment); 3276 char x[4] = {'a', 'b', 0, 0}; 3277 __msan_poison(&x[2], 1); 3278 U4 origin = __LINE__; 3279 __msan_set_origin(x, sizeof(x), origin); 3280 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 3281} 3282 3283TEST(MemorySanitizerOrigins, wcslen) { 3284 wchar_t w[3] = {'a', 'b', 0}; 3285 U4 origin = __LINE__; 3286 __msan_set_origin(w, sizeof(w), origin); 3287 __msan_poison(&w[2], sizeof(wchar_t)); 3288 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3289} 3290 3291#if MSAN_HAS_M128 3292TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3293 __m128 x, y; 3294 U4 origin = __LINE__; 3295 __msan_set_origin(&x, sizeof(x), origin); 3296 __msan_poison(&x, sizeof(x)); 3297 __builtin_ia32_storeups((float*)&y, x); 3298 EXPECT_POISONED_O(y, origin); 3299} 3300#endif 3301 3302NOINLINE void RecursiveMalloc(int depth) { 3303 static int count; 3304 count++; 3305 if ((count % (1024 * 1024)) == 0) 3306 printf("RecursiveMalloc: %d\n", count); 3307 int *x1 = new int; 3308 int *x2 = new int; 3309 break_optimization(x1); 3310 break_optimization(x2); 3311 if (depth > 0) { 3312 RecursiveMalloc(depth-1); 3313 RecursiveMalloc(depth-1); 3314 } 3315 delete x1; 3316 delete x2; 3317} 3318 3319TEST(MemorySanitizer, Select) { 3320 int x; 3321 int volatile* p = &x; 3322 int z = *p ? 1 : 0; 3323 EXPECT_POISONED(z); 3324} 3325 3326TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3327 RecursiveMalloc(22); 3328} 3329 3330TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3331 size_t sizes[] = {0, 20, 5000, 1<<20}; 3332 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3333 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3334 EXPECT_EQ(alloc_size, sizes[i]); 3335 } 3336} 3337 3338TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3339 char *array = reinterpret_cast<char*>(malloc(100)); 3340 int *int_ptr = new int; 3341 3342 EXPECT_TRUE(__msan_get_ownership(array)); 3343 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3344 3345 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3346 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3347 3348 void *wild_addr = reinterpret_cast<void*>(0x1); 3349 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3350 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3351 3352 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3353 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3354 3355 // NULL is a valid argument for GetAllocatedSize but is not owned. 3356 EXPECT_FALSE(__msan_get_ownership(NULL)); 3357 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3358 3359 free(array); 3360 EXPECT_FALSE(__msan_get_ownership(array)); 3361 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3362 3363 delete int_ptr; 3364} 3365