msan_test.cc revision f3603890015c130420def39d67a02c2fdafc6f84
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, shmat) { 1150 void *p = mmap(NULL, 4096, PROT_READ | PROT_WRITE, 1151 MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); 1152 ASSERT_NE(MAP_FAILED, p); 1153 1154 ((char *)p)[10] = *GetPoisoned<U1>(); 1155 ((char *)p)[4095] = *GetPoisoned<U1>(); 1156 1157 int res = munmap(p, 4096); 1158 ASSERT_EQ(0, res); 1159 1160 int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT); 1161 ASSERT_GT(id, -1); 1162 1163 void *q = shmat(id, p, 0); 1164 ASSERT_EQ(p, q); 1165 1166 EXPECT_NOT_POISONED(((char *)q)[0]); 1167 EXPECT_NOT_POISONED(((char *)q)[10]); 1168 EXPECT_NOT_POISONED(((char *)q)[4095]); 1169 1170 res = shmdt(q); 1171 ASSERT_EQ(0, res); 1172 1173 res = shmctl(id, IPC_RMID, 0); 1174 ASSERT_GT(res, -1); 1175} 1176 1177TEST(MemorySanitizer, random_r) { 1178 int32_t x; 1179 char z[64]; 1180 memset(z, 0, sizeof(z)); 1181 1182 struct random_data buf; 1183 memset(&buf, 0, sizeof(buf)); 1184 1185 int res = initstate_r(0, z, sizeof(z), &buf); 1186 ASSERT_EQ(0, res); 1187 1188 res = random_r(&buf, &x); 1189 ASSERT_EQ(0, res); 1190 EXPECT_NOT_POISONED(x); 1191} 1192 1193TEST(MemorySanitizer, confstr) { 1194 char buf[3]; 1195 size_t res = confstr(_CS_PATH, buf, sizeof(buf)); 1196 ASSERT_GT(res, sizeof(buf)); 1197 EXPECT_NOT_POISONED(buf[0]); 1198 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); 1199 1200 char buf2[1000]; 1201 res = confstr(_CS_PATH, buf2, sizeof(buf2)); 1202 ASSERT_LT(res, sizeof(buf2)); 1203 EXPECT_NOT_POISONED(buf2[0]); 1204 EXPECT_NOT_POISONED(buf2[res - 1]); 1205 EXPECT_POISONED(buf2[res]); 1206 ASSERT_EQ(res, strlen(buf2) + 1); 1207} 1208 1209TEST(MemorySanitizer, readdir) { 1210 DIR *dir = opendir("."); 1211 struct dirent *d = readdir(dir); 1212 assert(d); 1213 EXPECT_NOT_POISONED(d->d_name[0]); 1214 closedir(dir); 1215} 1216 1217TEST(MemorySanitizer, readdir_r) { 1218 DIR *dir = opendir("."); 1219 struct dirent d; 1220 struct dirent *pd; 1221 int res = readdir_r(dir, &d, &pd); 1222 assert(!res); 1223 EXPECT_NOT_POISONED(pd); 1224 EXPECT_NOT_POISONED(d.d_name[0]); 1225 closedir(dir); 1226} 1227 1228TEST(MemorySanitizer, realpath) { 1229 const char* relpath = "."; 1230 char path[PATH_MAX + 1]; 1231 char* res = realpath(relpath, path); 1232 assert(res); 1233 EXPECT_NOT_POISONED(path[0]); 1234} 1235 1236TEST(MemorySanitizer, realpath_null) { 1237 const char* relpath = "."; 1238 char* res = realpath(relpath, NULL); 1239 printf("%d, %s\n", errno, strerror(errno)); 1240 assert(res); 1241 EXPECT_NOT_POISONED(res[0]); 1242 free(res); 1243} 1244 1245TEST(MemorySanitizer, canonicalize_file_name) { 1246 const char* relpath = "."; 1247 char* res = canonicalize_file_name(relpath); 1248 assert(res); 1249 EXPECT_NOT_POISONED(res[0]); 1250 free(res); 1251} 1252 1253extern char **environ; 1254 1255TEST(MemorySanitizer, setenv) { 1256 setenv("AAA", "BBB", 1); 1257 for (char **envp = environ; *envp; ++envp) { 1258 EXPECT_NOT_POISONED(*envp); 1259 EXPECT_NOT_POISONED(*envp[0]); 1260 } 1261} 1262 1263TEST(MemorySanitizer, putenv) { 1264 char s[] = "AAA=BBB"; 1265 putenv(s); 1266 for (char **envp = environ; *envp; ++envp) { 1267 EXPECT_NOT_POISONED(*envp); 1268 EXPECT_NOT_POISONED(*envp[0]); 1269 } 1270} 1271 1272TEST(MemorySanitizer, memcpy) { 1273 char* x = new char[2]; 1274 char* y = new char[2]; 1275 x[0] = 1; 1276 x[1] = *GetPoisoned<char>(); 1277 memcpy(y, x, 2); 1278 EXPECT_NOT_POISONED(y[0]); 1279 EXPECT_POISONED(y[1]); 1280} 1281 1282void TestUnalignedMemcpy(int left, int right, bool src_is_aligned) { 1283 const int sz = 20; 1284 char *dst = (char *)malloc(sz); 1285 U4 origin = __msan_get_origin(dst); 1286 1287 char *src = (char *)malloc(sz); 1288 memset(src, 0, sz); 1289 1290 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); 1291 for (int i = 0; i < left; ++i) 1292 EXPECT_POISONED_O(dst[i], origin); 1293 for (int i = 0; i < right; ++i) 1294 EXPECT_POISONED_O(dst[sz - i - 1], origin); 1295 EXPECT_NOT_POISONED(dst[left]); 1296 EXPECT_NOT_POISONED(dst[sz - right - 1]); 1297 1298 free(dst); 1299 free(src); 1300} 1301 1302TEST(MemorySanitizer, memcpy_unaligned) { 1303 for (int i = 0; i < 4; ++i) { 1304 for (int j = 0; j < 4; ++j) { 1305 TestUnalignedMemcpy(i, j, true); 1306 TestUnalignedMemcpy(i, j, false); 1307 } 1308 } 1309} 1310 1311TEST(MemorySanitizer, memmove) { 1312 char* x = new char[2]; 1313 char* y = new char[2]; 1314 x[0] = 1; 1315 x[1] = *GetPoisoned<char>(); 1316 memmove(y, x, 2); 1317 EXPECT_NOT_POISONED(y[0]); 1318 EXPECT_POISONED(y[1]); 1319} 1320 1321TEST(MemorySanitizer, bcopy) { 1322 char* x = new char[2]; 1323 char* y = new char[2]; 1324 x[0] = 1; 1325 x[1] = *GetPoisoned<char>(); 1326 bcopy(x, y, 2); 1327 EXPECT_NOT_POISONED(y[0]); 1328 EXPECT_POISONED(y[1]); 1329} 1330 1331TEST(MemorySanitizer, strdup) { 1332 char buf[4] = "abc"; 1333 __msan_poison(buf + 2, sizeof(*buf)); 1334 char *x = strdup(buf); 1335 EXPECT_NOT_POISONED(x[0]); 1336 EXPECT_NOT_POISONED(x[1]); 1337 EXPECT_POISONED(x[2]); 1338 EXPECT_NOT_POISONED(x[3]); 1339 free(x); 1340} 1341 1342TEST(MemorySanitizer, strndup) { 1343 char buf[4] = "abc"; 1344 __msan_poison(buf + 2, sizeof(*buf)); 1345 char *x = strndup(buf, 3); 1346 EXPECT_NOT_POISONED(x[0]); 1347 EXPECT_NOT_POISONED(x[1]); 1348 EXPECT_POISONED(x[2]); 1349 EXPECT_NOT_POISONED(x[3]); 1350 free(x); 1351} 1352 1353TEST(MemorySanitizer, strndup_short) { 1354 char buf[4] = "abc"; 1355 __msan_poison(buf + 1, sizeof(*buf)); 1356 __msan_poison(buf + 2, sizeof(*buf)); 1357 char *x = strndup(buf, 2); 1358 EXPECT_NOT_POISONED(x[0]); 1359 EXPECT_POISONED(x[1]); 1360 EXPECT_NOT_POISONED(x[2]); 1361 free(x); 1362} 1363 1364 1365template<class T, int size> 1366void TestOverlapMemmove() { 1367 T *x = new T[size]; 1368 assert(size >= 3); 1369 x[2] = 0; 1370 memmove(x, x + 1, (size - 1) * sizeof(T)); 1371 EXPECT_NOT_POISONED(x[1]); 1372 if (!__msan_has_dynamic_component()) { 1373 // FIXME: under DR we will lose this information 1374 // because accesses in memmove will unpoisin the shadow. 1375 // We need to use our own memove implementation instead of libc's. 1376 EXPECT_POISONED(x[0]); 1377 EXPECT_POISONED(x[2]); 1378 } 1379 delete [] x; 1380} 1381 1382TEST(MemorySanitizer, overlap_memmove) { 1383 TestOverlapMemmove<U1, 10>(); 1384 TestOverlapMemmove<U1, 1000>(); 1385 TestOverlapMemmove<U8, 4>(); 1386 TestOverlapMemmove<U8, 1000>(); 1387} 1388 1389TEST(MemorySanitizer, strcpy) { // NOLINT 1390 char* x = new char[3]; 1391 char* y = new char[3]; 1392 x[0] = 'a'; 1393 x[1] = *GetPoisoned<char>(1, 1); 1394 x[2] = 0; 1395 strcpy(y, x); // NOLINT 1396 EXPECT_NOT_POISONED(y[0]); 1397 EXPECT_POISONED(y[1]); 1398 EXPECT_NOT_POISONED(y[2]); 1399} 1400 1401TEST(MemorySanitizer, strncpy) { // NOLINT 1402 char* x = new char[3]; 1403 char* y = new char[3]; 1404 x[0] = 'a'; 1405 x[1] = *GetPoisoned<char>(1, 1); 1406 x[2] = 0; 1407 strncpy(y, x, 2); // NOLINT 1408 EXPECT_NOT_POISONED(y[0]); 1409 EXPECT_POISONED(y[1]); 1410 EXPECT_POISONED(y[2]); 1411} 1412 1413TEST(MemorySanitizer, stpcpy) { // NOLINT 1414 char* x = new char[3]; 1415 char* y = new char[3]; 1416 x[0] = 'a'; 1417 x[1] = *GetPoisoned<char>(1, 1); 1418 x[2] = 0; 1419 char *res = stpcpy(y, x); // NOLINT 1420 ASSERT_EQ(res, y + 2); 1421 EXPECT_NOT_POISONED(y[0]); 1422 EXPECT_POISONED(y[1]); 1423 EXPECT_NOT_POISONED(y[2]); 1424} 1425 1426TEST(MemorySanitizer, strtol) { 1427 char *e; 1428 assert(1 == strtol("1", &e, 10)); 1429 EXPECT_NOT_POISONED((S8) e); 1430} 1431 1432TEST(MemorySanitizer, strtoll) { 1433 char *e; 1434 assert(1 == strtoll("1", &e, 10)); 1435 EXPECT_NOT_POISONED((S8) e); 1436} 1437 1438TEST(MemorySanitizer, strtoul) { 1439 char *e; 1440 assert(1 == strtoul("1", &e, 10)); 1441 EXPECT_NOT_POISONED((S8) e); 1442} 1443 1444TEST(MemorySanitizer, strtoull) { 1445 char *e; 1446 assert(1 == strtoull("1", &e, 10)); 1447 EXPECT_NOT_POISONED((S8) e); 1448} 1449 1450TEST(MemorySanitizer, strtoimax) { 1451 char *e; 1452 assert(1 == strtoimax("1", &e, 10)); 1453 EXPECT_NOT_POISONED((S8) e); 1454} 1455 1456TEST(MemorySanitizer, strtoumax) { 1457 char *e; 1458 assert(1 == strtoumax("1", &e, 10)); 1459 EXPECT_NOT_POISONED((S8) e); 1460} 1461 1462TEST(MemorySanitizer, strtod) { 1463 char *e; 1464 assert(0 != strtod("1.5", &e)); 1465 EXPECT_NOT_POISONED((S8) e); 1466} 1467 1468#ifdef __GLIBC__ 1469extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); 1470TEST(MemorySanitizer, __strtod_l) { 1471 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); 1472 char *e; 1473 assert(0 != __strtod_l("1.5", &e, loc)); 1474 EXPECT_NOT_POISONED((S8) e); 1475 freelocale(loc); 1476} 1477#endif // __GLIBC__ 1478 1479TEST(MemorySanitizer, strtof) { 1480 char *e; 1481 assert(0 != strtof("1.5", &e)); 1482 EXPECT_NOT_POISONED((S8) e); 1483} 1484 1485TEST(MemorySanitizer, strtold) { 1486 char *e; 1487 assert(0 != strtold("1.5", &e)); 1488 EXPECT_NOT_POISONED((S8) e); 1489} 1490 1491TEST(MemorySanitizer, modf) { 1492 double x, y; 1493 x = modf(2.1, &y); 1494 EXPECT_NOT_POISONED(y); 1495} 1496 1497TEST(MemorySanitizer, modff) { 1498 float x, y; 1499 x = modff(2.1, &y); 1500 EXPECT_NOT_POISONED(y); 1501} 1502 1503TEST(MemorySanitizer, modfl) { 1504 long double x, y; 1505 x = modfl(2.1, &y); 1506 EXPECT_NOT_POISONED(y); 1507} 1508 1509TEST(MemorySanitizer, sprintf) { // NOLINT 1510 char buff[10]; 1511 break_optimization(buff); 1512 EXPECT_POISONED(buff[0]); 1513 int res = sprintf(buff, "%d", 1234567); // NOLINT 1514 assert(res == 7); 1515 assert(buff[0] == '1'); 1516 assert(buff[1] == '2'); 1517 assert(buff[2] == '3'); 1518 assert(buff[6] == '7'); 1519 assert(buff[7] == 0); 1520 EXPECT_POISONED(buff[8]); 1521} 1522 1523TEST(MemorySanitizer, snprintf) { 1524 char buff[10]; 1525 break_optimization(buff); 1526 EXPECT_POISONED(buff[0]); 1527 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1528 assert(res == 7); 1529 assert(buff[0] == '1'); 1530 assert(buff[1] == '2'); 1531 assert(buff[2] == '3'); 1532 assert(buff[6] == '7'); 1533 assert(buff[7] == 0); 1534 EXPECT_POISONED(buff[8]); 1535} 1536 1537TEST(MemorySanitizer, swprintf) { 1538 wchar_t buff[10]; 1539 assert(sizeof(wchar_t) == 4); 1540 break_optimization(buff); 1541 EXPECT_POISONED(buff[0]); 1542 int res = swprintf(buff, 9, L"%d", 1234567); 1543 assert(res == 7); 1544 assert(buff[0] == '1'); 1545 assert(buff[1] == '2'); 1546 assert(buff[2] == '3'); 1547 assert(buff[6] == '7'); 1548 assert(buff[7] == 0); 1549 EXPECT_POISONED(buff[8]); 1550} 1551 1552TEST(MemorySanitizer, asprintf) { // NOLINT 1553 char *pbuf; 1554 EXPECT_POISONED(pbuf); 1555 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1556 assert(res == 7); 1557 EXPECT_NOT_POISONED(pbuf); 1558 assert(pbuf[0] == '1'); 1559 assert(pbuf[1] == '2'); 1560 assert(pbuf[2] == '3'); 1561 assert(pbuf[6] == '7'); 1562 assert(pbuf[7] == 0); 1563 free(pbuf); 1564} 1565 1566TEST(MemorySanitizer, mbstowcs) { 1567 const char *x = "abc"; 1568 wchar_t buff[10]; 1569 int res = mbstowcs(buff, x, 2); 1570 EXPECT_EQ(2, res); 1571 EXPECT_EQ(L'a', buff[0]); 1572 EXPECT_EQ(L'b', buff[1]); 1573 EXPECT_POISONED(buff[2]); 1574 res = mbstowcs(buff, x, 10); 1575 EXPECT_EQ(3, res); 1576 EXPECT_NOT_POISONED(buff[3]); 1577} 1578 1579TEST(MemorySanitizer, wcstombs) { 1580 const wchar_t *x = L"abc"; 1581 char buff[10]; 1582 int res = wcstombs(buff, x, 4); 1583 EXPECT_EQ(res, 3); 1584 EXPECT_EQ(buff[0], 'a'); 1585 EXPECT_EQ(buff[1], 'b'); 1586 EXPECT_EQ(buff[2], 'c'); 1587} 1588 1589TEST(MemorySanitizer, wcsrtombs) { 1590 const wchar_t *x = L"abc"; 1591 const wchar_t *p = x; 1592 char buff[10]; 1593 mbstate_t mbs; 1594 memset(&mbs, 0, sizeof(mbs)); 1595 int res = wcsrtombs(buff, &p, 4, &mbs); 1596 EXPECT_EQ(res, 3); 1597 EXPECT_EQ(buff[0], 'a'); 1598 EXPECT_EQ(buff[1], 'b'); 1599 EXPECT_EQ(buff[2], 'c'); 1600 EXPECT_EQ(buff[3], '\0'); 1601 EXPECT_POISONED(buff[4]); 1602} 1603 1604TEST(MemorySanitizer, wcsnrtombs) { 1605 const wchar_t *x = L"abc"; 1606 const wchar_t *p = x; 1607 char buff[10]; 1608 mbstate_t mbs; 1609 memset(&mbs, 0, sizeof(mbs)); 1610 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1611 EXPECT_EQ(res, 2); 1612 EXPECT_EQ(buff[0], 'a'); 1613 EXPECT_EQ(buff[1], 'b'); 1614 EXPECT_POISONED(buff[2]); 1615} 1616 1617TEST(MemorySanitizer, mbtowc) { 1618 const char *x = "abc"; 1619 wchar_t wx; 1620 int res = mbtowc(&wx, x, 3); 1621 EXPECT_GT(res, 0); 1622 EXPECT_NOT_POISONED(wx); 1623} 1624 1625TEST(MemorySanitizer, mbrtowc) { 1626 const char *x = "abc"; 1627 wchar_t wx; 1628 mbstate_t mbs; 1629 memset(&mbs, 0, sizeof(mbs)); 1630 int res = mbrtowc(&wx, x, 3, &mbs); 1631 EXPECT_GT(res, 0); 1632 EXPECT_NOT_POISONED(wx); 1633} 1634 1635TEST(MemorySanitizer, gettimeofday) { 1636 struct timeval tv; 1637 struct timezone tz; 1638 break_optimization(&tv); 1639 break_optimization(&tz); 1640 assert(sizeof(tv) == 16); 1641 assert(sizeof(tz) == 8); 1642 EXPECT_POISONED(tv.tv_sec); 1643 EXPECT_POISONED(tv.tv_usec); 1644 EXPECT_POISONED(tz.tz_minuteswest); 1645 EXPECT_POISONED(tz.tz_dsttime); 1646 assert(0 == gettimeofday(&tv, &tz)); 1647 EXPECT_NOT_POISONED(tv.tv_sec); 1648 EXPECT_NOT_POISONED(tv.tv_usec); 1649 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1650 EXPECT_NOT_POISONED(tz.tz_dsttime); 1651} 1652 1653TEST(MemorySanitizer, clock_gettime) { 1654 struct timespec tp; 1655 EXPECT_POISONED(tp.tv_sec); 1656 EXPECT_POISONED(tp.tv_nsec); 1657 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1658 EXPECT_NOT_POISONED(tp.tv_sec); 1659 EXPECT_NOT_POISONED(tp.tv_nsec); 1660} 1661 1662TEST(MemorySanitizer, clock_getres) { 1663 struct timespec tp; 1664 EXPECT_POISONED(tp.tv_sec); 1665 EXPECT_POISONED(tp.tv_nsec); 1666 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1667 EXPECT_POISONED(tp.tv_sec); 1668 EXPECT_POISONED(tp.tv_nsec); 1669 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1670 EXPECT_NOT_POISONED(tp.tv_sec); 1671 EXPECT_NOT_POISONED(tp.tv_nsec); 1672} 1673 1674TEST(MemorySanitizer, getitimer) { 1675 struct itimerval it1, it2; 1676 int res; 1677 EXPECT_POISONED(it1.it_interval.tv_sec); 1678 EXPECT_POISONED(it1.it_interval.tv_usec); 1679 EXPECT_POISONED(it1.it_value.tv_sec); 1680 EXPECT_POISONED(it1.it_value.tv_usec); 1681 res = getitimer(ITIMER_VIRTUAL, &it1); 1682 assert(!res); 1683 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1684 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1685 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1686 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1687 1688 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1689 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1690 1691 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1692 assert(!res); 1693 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1694 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1695 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1696 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1697 1698 // Check that old_value can be 0, and disable the timer. 1699 memset(&it1, 0, sizeof(it1)); 1700 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1701 assert(!res); 1702} 1703 1704TEST(MemorySanitizer, setitimer_null) { 1705 setitimer(ITIMER_VIRTUAL, 0, 0); 1706 // Not testing the return value, since it the behaviour seems to differ 1707 // between libc implementations and POSIX. 1708 // Should never crash, though. 1709} 1710 1711TEST(MemorySanitizer, time) { 1712 time_t t; 1713 EXPECT_POISONED(t); 1714 time_t t2 = time(&t); 1715 assert(t2 != (time_t)-1); 1716 EXPECT_NOT_POISONED(t); 1717} 1718 1719TEST(MemorySanitizer, localtime) { 1720 time_t t = 123; 1721 struct tm *time = localtime(&t); 1722 assert(time != 0); 1723 EXPECT_NOT_POISONED(time->tm_sec); 1724 EXPECT_NOT_POISONED(time->tm_hour); 1725 EXPECT_NOT_POISONED(time->tm_year); 1726 EXPECT_NOT_POISONED(time->tm_isdst); 1727 EXPECT_NE(0, strlen(time->tm_zone)); 1728} 1729 1730TEST(MemorySanitizer, localtime_r) { 1731 time_t t = 123; 1732 struct tm time; 1733 struct tm *res = localtime_r(&t, &time); 1734 assert(res != 0); 1735 EXPECT_NOT_POISONED(time.tm_sec); 1736 EXPECT_NOT_POISONED(time.tm_hour); 1737 EXPECT_NOT_POISONED(time.tm_year); 1738 EXPECT_NOT_POISONED(time.tm_isdst); 1739 EXPECT_NE(0, strlen(time.tm_zone)); 1740} 1741 1742TEST(MemorySanitizer, getmntent) { 1743 FILE *fp = setmntent("/etc/fstab", "r"); 1744 struct mntent *mnt = getmntent(fp); 1745 ASSERT_NE((void *)0, mnt); 1746 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1747 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1748 ASSERT_NE(0, strlen(mnt->mnt_type)); 1749 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1750 EXPECT_NOT_POISONED(mnt->mnt_freq); 1751 EXPECT_NOT_POISONED(mnt->mnt_passno); 1752 fclose(fp); 1753} 1754 1755TEST(MemorySanitizer, getmntent_r) { 1756 FILE *fp = setmntent("/etc/fstab", "r"); 1757 struct mntent mntbuf; 1758 char buf[1000]; 1759 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 1760 ASSERT_NE((void *)0, mnt); 1761 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1762 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1763 ASSERT_NE(0, strlen(mnt->mnt_type)); 1764 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1765 EXPECT_NOT_POISONED(mnt->mnt_freq); 1766 EXPECT_NOT_POISONED(mnt->mnt_passno); 1767 fclose(fp); 1768} 1769 1770TEST(MemorySanitizer, ether) { 1771 const char *asc = "11:22:33:44:55:66"; 1772 struct ether_addr *paddr = ether_aton(asc); 1773 EXPECT_NOT_POISONED(*paddr); 1774 1775 struct ether_addr addr; 1776 paddr = ether_aton_r(asc, &addr); 1777 ASSERT_EQ(paddr, &addr); 1778 EXPECT_NOT_POISONED(addr); 1779 1780 char *s = ether_ntoa(&addr); 1781 ASSERT_NE(0, strlen(s)); 1782 1783 char buf[100]; 1784 s = ether_ntoa_r(&addr, buf); 1785 ASSERT_EQ(s, buf); 1786 ASSERT_NE(0, strlen(buf)); 1787} 1788 1789TEST(MemorySanitizer, mmap) { 1790 const int size = 4096; 1791 void *p1, *p2; 1792 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1793 __msan_poison(p1, size); 1794 munmap(p1, size); 1795 for (int i = 0; i < 1000; i++) { 1796 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1797 if (p2 == p1) 1798 break; 1799 else 1800 munmap(p2, size); 1801 } 1802 if (p1 == p2) { 1803 EXPECT_NOT_POISONED(*(char*)p2); 1804 munmap(p2, size); 1805 } 1806} 1807 1808// FIXME: enable and add ecvt. 1809// FIXME: check why msandr does nt handle fcvt. 1810TEST(MemorySanitizer, fcvt) { 1811 int a, b; 1812 break_optimization(&a); 1813 break_optimization(&b); 1814 EXPECT_POISONED(a); 1815 EXPECT_POISONED(b); 1816 char *str = fcvt(12345.6789, 10, &a, &b); 1817 EXPECT_NOT_POISONED(a); 1818 EXPECT_NOT_POISONED(b); 1819} 1820 1821TEST(MemorySanitizer, frexp) { 1822 int x; 1823 x = *GetPoisoned<int>(); 1824 double r = frexp(1.1, &x); 1825 EXPECT_NOT_POISONED(r); 1826 EXPECT_NOT_POISONED(x); 1827 1828 x = *GetPoisoned<int>(); 1829 float rf = frexpf(1.1, &x); 1830 EXPECT_NOT_POISONED(rf); 1831 EXPECT_NOT_POISONED(x); 1832 1833 x = *GetPoisoned<int>(); 1834 double rl = frexpl(1.1, &x); 1835 EXPECT_NOT_POISONED(rl); 1836 EXPECT_NOT_POISONED(x); 1837} 1838 1839namespace { 1840 1841static int cnt; 1842 1843void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1844 assert(signo == SIGPROF); 1845 assert(si); 1846 EXPECT_NOT_POISONED(si->si_errno); 1847 EXPECT_NOT_POISONED(si->si_pid); 1848#if __linux__ 1849# if defined(__x86_64__) 1850 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1851# elif defined(__i386__) 1852 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1853# endif 1854#endif 1855 ++cnt; 1856} 1857 1858TEST(MemorySanitizer, sigaction) { 1859 struct sigaction act = {}; 1860 struct sigaction oldact = {}; 1861 struct sigaction origact = {}; 1862 1863 sigaction(SIGPROF, 0, &origact); 1864 1865 act.sa_flags |= SA_SIGINFO; 1866 act.sa_sigaction = &SigactionHandler; 1867 sigaction(SIGPROF, &act, 0); 1868 1869 kill(getpid(), SIGPROF); 1870 1871 act.sa_flags &= ~SA_SIGINFO; 1872 act.sa_handler = SIG_DFL; 1873 sigaction(SIGPROF, &act, 0); 1874 1875 act.sa_flags &= ~SA_SIGINFO; 1876 act.sa_handler = SIG_IGN; 1877 sigaction(SIGPROF, &act, &oldact); 1878 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1879 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1880 kill(getpid(), SIGPROF); 1881 1882 act.sa_flags |= SA_SIGINFO; 1883 act.sa_sigaction = &SigactionHandler; 1884 sigaction(SIGPROF, &act, &oldact); 1885 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1886 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1887 kill(getpid(), SIGPROF); 1888 1889 act.sa_flags &= ~SA_SIGINFO; 1890 act.sa_handler = SIG_DFL; 1891 sigaction(SIGPROF, &act, &oldact); 1892 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1893 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1894 EXPECT_EQ(2, cnt); 1895 1896 sigaction(SIGPROF, &origact, 0); 1897} 1898 1899} // namespace 1900 1901 1902TEST(MemorySanitizer, sigemptyset) { 1903 sigset_t s; 1904 EXPECT_POISONED(s); 1905 int res = sigemptyset(&s); 1906 ASSERT_EQ(0, res); 1907 EXPECT_NOT_POISONED(s); 1908} 1909 1910TEST(MemorySanitizer, sigfillset) { 1911 sigset_t s; 1912 EXPECT_POISONED(s); 1913 int res = sigfillset(&s); 1914 ASSERT_EQ(0, res); 1915 EXPECT_NOT_POISONED(s); 1916} 1917 1918TEST(MemorySanitizer, sigpending) { 1919 sigset_t s; 1920 EXPECT_POISONED(s); 1921 int res = sigpending(&s); 1922 ASSERT_EQ(0, res); 1923 EXPECT_NOT_POISONED(s); 1924} 1925 1926TEST(MemorySanitizer, sigprocmask) { 1927 sigset_t s; 1928 EXPECT_POISONED(s); 1929 int res = sigprocmask(SIG_BLOCK, 0, &s); 1930 ASSERT_EQ(0, res); 1931 EXPECT_NOT_POISONED(s); 1932} 1933 1934struct StructWithDtor { 1935 ~StructWithDtor(); 1936}; 1937 1938NOINLINE StructWithDtor::~StructWithDtor() { 1939 break_optimization(0); 1940} 1941 1942TEST(MemorySanitizer, Invoke) { 1943 StructWithDtor s; // Will cause the calls to become invokes. 1944 EXPECT_NOT_POISONED(0); 1945 EXPECT_POISONED(*GetPoisoned<int>()); 1946 EXPECT_NOT_POISONED(0); 1947 EXPECT_POISONED(*GetPoisoned<int>()); 1948 EXPECT_POISONED(ReturnPoisoned<S4>()); 1949} 1950 1951TEST(MemorySanitizer, ptrtoint) { 1952 // Test that shadow is propagated through pointer-to-integer conversion. 1953 void* p = (void*)0xABCD; 1954 __msan_poison(((char*)&p) + 1, sizeof(p)); 1955 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 1956 1957 void* q = (void*)0xABCD; 1958 __msan_poison(&q, sizeof(q) - 1); 1959 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 1960} 1961 1962static void vaargsfn2(int guard, ...) { 1963 va_list vl; 1964 va_start(vl, guard); 1965 EXPECT_NOT_POISONED(va_arg(vl, int)); 1966 EXPECT_NOT_POISONED(va_arg(vl, int)); 1967 EXPECT_NOT_POISONED(va_arg(vl, int)); 1968 EXPECT_POISONED(va_arg(vl, double)); 1969 va_end(vl); 1970} 1971 1972static void vaargsfn(int guard, ...) { 1973 va_list vl; 1974 va_start(vl, guard); 1975 EXPECT_NOT_POISONED(va_arg(vl, int)); 1976 EXPECT_POISONED(va_arg(vl, int)); 1977 // The following call will overwrite __msan_param_tls. 1978 // Checks after it test that arg shadow was somehow saved across the call. 1979 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 1980 EXPECT_NOT_POISONED(va_arg(vl, int)); 1981 EXPECT_POISONED(va_arg(vl, int)); 1982 va_end(vl); 1983} 1984 1985TEST(MemorySanitizer, VAArgTest) { 1986 int* x = GetPoisoned<int>(); 1987 int* y = GetPoisoned<int>(4); 1988 vaargsfn(1, 13, *x, 42, *y); 1989} 1990 1991static void vaargsfn_many(int guard, ...) { 1992 va_list vl; 1993 va_start(vl, guard); 1994 EXPECT_NOT_POISONED(va_arg(vl, int)); 1995 EXPECT_POISONED(va_arg(vl, int)); 1996 EXPECT_NOT_POISONED(va_arg(vl, int)); 1997 EXPECT_NOT_POISONED(va_arg(vl, int)); 1998 EXPECT_NOT_POISONED(va_arg(vl, int)); 1999 EXPECT_NOT_POISONED(va_arg(vl, int)); 2000 EXPECT_NOT_POISONED(va_arg(vl, int)); 2001 EXPECT_NOT_POISONED(va_arg(vl, int)); 2002 EXPECT_NOT_POISONED(va_arg(vl, int)); 2003 EXPECT_POISONED(va_arg(vl, int)); 2004 va_end(vl); 2005} 2006 2007TEST(MemorySanitizer, VAArgManyTest) { 2008 int* x = GetPoisoned<int>(); 2009 int* y = GetPoisoned<int>(4); 2010 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 2011} 2012 2013static void vaargsfn_pass2(va_list vl) { 2014 EXPECT_NOT_POISONED(va_arg(vl, int)); 2015 EXPECT_NOT_POISONED(va_arg(vl, int)); 2016 EXPECT_POISONED(va_arg(vl, int)); 2017} 2018 2019static void vaargsfn_pass(int guard, ...) { 2020 va_list vl; 2021 va_start(vl, guard); 2022 EXPECT_POISONED(va_arg(vl, int)); 2023 vaargsfn_pass2(vl); 2024 va_end(vl); 2025} 2026 2027TEST(MemorySanitizer, VAArgPass) { 2028 int* x = GetPoisoned<int>(); 2029 int* y = GetPoisoned<int>(4); 2030 vaargsfn_pass(1, *x, 2, 3, *y); 2031} 2032 2033static void vaargsfn_copy2(va_list vl) { 2034 EXPECT_NOT_POISONED(va_arg(vl, int)); 2035 EXPECT_POISONED(va_arg(vl, int)); 2036} 2037 2038static void vaargsfn_copy(int guard, ...) { 2039 va_list vl; 2040 va_start(vl, guard); 2041 EXPECT_NOT_POISONED(va_arg(vl, int)); 2042 EXPECT_POISONED(va_arg(vl, int)); 2043 va_list vl2; 2044 va_copy(vl2, vl); 2045 vaargsfn_copy2(vl2); 2046 EXPECT_NOT_POISONED(va_arg(vl, int)); 2047 EXPECT_POISONED(va_arg(vl, int)); 2048 va_end(vl); 2049} 2050 2051TEST(MemorySanitizer, VAArgCopy) { 2052 int* x = GetPoisoned<int>(); 2053 int* y = GetPoisoned<int>(4); 2054 vaargsfn_copy(1, 2, *x, 3, *y); 2055} 2056 2057static void vaargsfn_ptr(int guard, ...) { 2058 va_list vl; 2059 va_start(vl, guard); 2060 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2061 EXPECT_POISONED(va_arg(vl, int*)); 2062 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2063 EXPECT_POISONED(va_arg(vl, double*)); 2064 va_end(vl); 2065} 2066 2067TEST(MemorySanitizer, VAArgPtr) { 2068 int** x = GetPoisoned<int*>(); 2069 double** y = GetPoisoned<double*>(8); 2070 int z; 2071 vaargsfn_ptr(1, &z, *x, &z, *y); 2072} 2073 2074static void vaargsfn_overflow(int guard, ...) { 2075 va_list vl; 2076 va_start(vl, guard); 2077 EXPECT_NOT_POISONED(va_arg(vl, int)); 2078 EXPECT_NOT_POISONED(va_arg(vl, int)); 2079 EXPECT_POISONED(va_arg(vl, int)); 2080 EXPECT_NOT_POISONED(va_arg(vl, int)); 2081 EXPECT_NOT_POISONED(va_arg(vl, int)); 2082 EXPECT_NOT_POISONED(va_arg(vl, int)); 2083 2084 EXPECT_NOT_POISONED(va_arg(vl, double)); 2085 EXPECT_NOT_POISONED(va_arg(vl, double)); 2086 EXPECT_NOT_POISONED(va_arg(vl, double)); 2087 EXPECT_POISONED(va_arg(vl, double)); 2088 EXPECT_NOT_POISONED(va_arg(vl, double)); 2089 EXPECT_POISONED(va_arg(vl, int*)); 2090 EXPECT_NOT_POISONED(va_arg(vl, double)); 2091 EXPECT_NOT_POISONED(va_arg(vl, double)); 2092 2093 EXPECT_POISONED(va_arg(vl, int)); 2094 EXPECT_POISONED(va_arg(vl, double)); 2095 EXPECT_POISONED(va_arg(vl, int*)); 2096 2097 EXPECT_NOT_POISONED(va_arg(vl, int)); 2098 EXPECT_NOT_POISONED(va_arg(vl, double)); 2099 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2100 2101 EXPECT_POISONED(va_arg(vl, int)); 2102 EXPECT_POISONED(va_arg(vl, double)); 2103 EXPECT_POISONED(va_arg(vl, int*)); 2104 2105 va_end(vl); 2106} 2107 2108TEST(MemorySanitizer, VAArgOverflow) { 2109 int* x = GetPoisoned<int>(); 2110 double* y = GetPoisoned<double>(8); 2111 int** p = GetPoisoned<int*>(16); 2112 int z; 2113 vaargsfn_overflow(1, 2114 1, 2, *x, 4, 5, 6, 2115 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2116 // the following args will overflow for sure 2117 *x, *y, *p, 2118 7, 9.9, &z, 2119 *x, *y, *p); 2120} 2121 2122static void vaargsfn_tlsoverwrite2(int guard, ...) { 2123 va_list vl; 2124 va_start(vl, guard); 2125 for (int i = 0; i < 20; ++i) 2126 EXPECT_NOT_POISONED(va_arg(vl, int)); 2127 va_end(vl); 2128} 2129 2130static void vaargsfn_tlsoverwrite(int guard, ...) { 2131 // This call will overwrite TLS contents unless it's backed up somewhere. 2132 vaargsfn_tlsoverwrite2(2, 2133 42, 42, 42, 42, 42, 2134 42, 42, 42, 42, 42, 2135 42, 42, 42, 42, 42, 2136 42, 42, 42, 42, 42); // 20x 2137 va_list vl; 2138 va_start(vl, guard); 2139 for (int i = 0; i < 20; ++i) 2140 EXPECT_POISONED(va_arg(vl, int)); 2141 va_end(vl); 2142} 2143 2144TEST(MemorySanitizer, VAArgTLSOverwrite) { 2145 int* x = GetPoisoned<int>(); 2146 vaargsfn_tlsoverwrite(1, 2147 *x, *x, *x, *x, *x, 2148 *x, *x, *x, *x, *x, 2149 *x, *x, *x, *x, *x, 2150 *x, *x, *x, *x, *x); // 20x 2151 2152} 2153 2154struct StructByVal { 2155 int a, b, c, d, e, f; 2156}; 2157 2158NOINLINE void StructByValTestFunc(struct StructByVal s) { 2159 EXPECT_NOT_POISONED(s.a); 2160 EXPECT_POISONED(s.b); 2161 EXPECT_NOT_POISONED(s.c); 2162 EXPECT_POISONED(s.d); 2163 EXPECT_NOT_POISONED(s.e); 2164 EXPECT_POISONED(s.f); 2165} 2166 2167NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2168 StructByValTestFunc(s); 2169} 2170 2171NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2172 StructByValTestFunc(s); 2173} 2174 2175TEST(MemorySanitizer, StructByVal) { 2176 // Large aggregates are passed as "byval" pointer argument in LLVM. 2177 struct StructByVal s; 2178 s.a = 1; 2179 s.b = *GetPoisoned<int>(); 2180 s.c = 2; 2181 s.d = *GetPoisoned<int>(); 2182 s.e = 3; 2183 s.f = *GetPoisoned<int>(); 2184 StructByValTestFunc(s); 2185 StructByValTestFunc1(s); 2186 StructByValTestFunc2(0, s); 2187} 2188 2189 2190#if MSAN_HAS_M128 2191NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2192NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2193TEST(MemorySanitizer, m128) { 2194 __m128i a = _mm_set1_epi16(0x1234); 2195 __m128i b = _mm_set1_epi16(0x7890); 2196 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2197 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2198} 2199// FIXME: add more tests for __m128i. 2200#endif // MSAN_HAS_M128 2201 2202// We should not complain when copying this poisoned hole. 2203struct StructWithHole { 2204 U4 a; 2205 // 4-byte hole. 2206 U8 b; 2207}; 2208 2209NOINLINE StructWithHole ReturnStructWithHole() { 2210 StructWithHole res; 2211 __msan_poison(&res, sizeof(res)); 2212 res.a = 1; 2213 res.b = 2; 2214 return res; 2215} 2216 2217TEST(MemorySanitizer, StructWithHole) { 2218 StructWithHole a = ReturnStructWithHole(); 2219 break_optimization(&a); 2220} 2221 2222template <class T> 2223NOINLINE T ReturnStruct() { 2224 T res; 2225 __msan_poison(&res, sizeof(res)); 2226 res.a = 1; 2227 return res; 2228} 2229 2230template <class T> 2231NOINLINE void TestReturnStruct() { 2232 T s1 = ReturnStruct<T>(); 2233 EXPECT_NOT_POISONED(s1.a); 2234 EXPECT_POISONED(s1.b); 2235} 2236 2237struct SSS1 { 2238 int a, b, c; 2239}; 2240struct SSS2 { 2241 int b, a, c; 2242}; 2243struct SSS3 { 2244 int b, c, a; 2245}; 2246struct SSS4 { 2247 int c, b, a; 2248}; 2249 2250struct SSS5 { 2251 int a; 2252 float b; 2253}; 2254struct SSS6 { 2255 int a; 2256 double b; 2257}; 2258struct SSS7 { 2259 S8 b; 2260 int a; 2261}; 2262struct SSS8 { 2263 S2 b; 2264 S8 a; 2265}; 2266 2267TEST(MemorySanitizer, IntStruct3) { 2268 TestReturnStruct<SSS1>(); 2269 TestReturnStruct<SSS2>(); 2270 TestReturnStruct<SSS3>(); 2271 TestReturnStruct<SSS4>(); 2272 TestReturnStruct<SSS5>(); 2273 TestReturnStruct<SSS6>(); 2274 TestReturnStruct<SSS7>(); 2275 TestReturnStruct<SSS8>(); 2276} 2277 2278struct LongStruct { 2279 U1 a1, b1; 2280 U2 a2, b2; 2281 U4 a4, b4; 2282 U8 a8, b8; 2283}; 2284 2285NOINLINE LongStruct ReturnLongStruct1() { 2286 LongStruct res; 2287 __msan_poison(&res, sizeof(res)); 2288 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2289 // leaves b1, .., b8 poisoned. 2290 return res; 2291} 2292 2293NOINLINE LongStruct ReturnLongStruct2() { 2294 LongStruct res; 2295 __msan_poison(&res, sizeof(res)); 2296 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2297 // leaves a1, .., a8 poisoned. 2298 return res; 2299} 2300 2301TEST(MemorySanitizer, LongStruct) { 2302 LongStruct s1 = ReturnLongStruct1(); 2303 __msan_print_shadow(&s1, sizeof(s1)); 2304 EXPECT_NOT_POISONED(s1.a1); 2305 EXPECT_NOT_POISONED(s1.a2); 2306 EXPECT_NOT_POISONED(s1.a4); 2307 EXPECT_NOT_POISONED(s1.a8); 2308 2309 EXPECT_POISONED(s1.b1); 2310 EXPECT_POISONED(s1.b2); 2311 EXPECT_POISONED(s1.b4); 2312 EXPECT_POISONED(s1.b8); 2313 2314 LongStruct s2 = ReturnLongStruct2(); 2315 __msan_print_shadow(&s2, sizeof(s2)); 2316 EXPECT_NOT_POISONED(s2.b1); 2317 EXPECT_NOT_POISONED(s2.b2); 2318 EXPECT_NOT_POISONED(s2.b4); 2319 EXPECT_NOT_POISONED(s2.b8); 2320 2321 EXPECT_POISONED(s2.a1); 2322 EXPECT_POISONED(s2.a2); 2323 EXPECT_POISONED(s2.a4); 2324 EXPECT_POISONED(s2.a8); 2325} 2326 2327TEST(MemorySanitizer, getrlimit) { 2328 struct rlimit limit; 2329 __msan_poison(&limit, sizeof(limit)); 2330 int result = getrlimit(RLIMIT_DATA, &limit); 2331 assert(result == 0); 2332 EXPECT_NOT_POISONED(limit.rlim_cur); 2333 EXPECT_NOT_POISONED(limit.rlim_max); 2334} 2335 2336TEST(MemorySanitizer, getrusage) { 2337 struct rusage usage; 2338 __msan_poison(&usage, sizeof(usage)); 2339 int result = getrusage(RUSAGE_SELF, &usage); 2340 assert(result == 0); 2341 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2342 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2343 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2344 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2345 EXPECT_NOT_POISONED(usage.ru_maxrss); 2346 EXPECT_NOT_POISONED(usage.ru_minflt); 2347 EXPECT_NOT_POISONED(usage.ru_majflt); 2348 EXPECT_NOT_POISONED(usage.ru_inblock); 2349 EXPECT_NOT_POISONED(usage.ru_oublock); 2350 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2351 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2352} 2353 2354#ifdef __GLIBC__ 2355extern char *program_invocation_name; 2356#else // __GLIBC__ 2357# error "TODO: port this" 2358#endif 2359 2360static void dladdr_testfn() {} 2361 2362TEST(MemorySanitizer, dladdr) { 2363 Dl_info info; 2364 __msan_poison(&info, sizeof(info)); 2365 int result = dladdr((const void*)dladdr_testfn, &info); 2366 assert(result != 0); 2367 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2368 if (info.dli_fname) 2369 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2370 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2371 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2372 if (info.dli_sname) 2373 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2374 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2375} 2376 2377#ifndef MSAN_TEST_DISABLE_DLOPEN 2378 2379static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2380 (*(int *)data)++; 2381 EXPECT_NOT_POISONED(info->dlpi_addr); 2382 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2383 EXPECT_NOT_POISONED(info->dlpi_phnum); 2384 for (int i = 0; i < info->dlpi_phnum; ++i) 2385 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2386 return 0; 2387} 2388 2389// Compute the path to our loadable DSO. We assume it's in the same 2390// directory. Only use string routines that we intercept so far to do this. 2391static int PathToLoadable(char *buf, size_t sz) { 2392 const char *basename = "libmsan_loadable.x86_64.so"; 2393 char *argv0 = program_invocation_name; 2394 char *last_slash = strrchr(argv0, '/'); 2395 assert(last_slash); 2396 int res = 2397 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2398 return res < sz ? 0 : res; 2399} 2400 2401TEST(MemorySanitizer, dl_iterate_phdr) { 2402 char path[4096]; 2403 int res = PathToLoadable(path, sizeof(path)); 2404 assert(!res); 2405 2406 // Having at least one dlopen'ed library in the process makes this more 2407 // entertaining. 2408 void *lib = dlopen(path, RTLD_LAZY); 2409 ASSERT_NE((void*)0, lib); 2410 2411 int count = 0; 2412 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2413 assert(count > 0); 2414 2415 dlclose(lib); 2416} 2417 2418 2419TEST(MemorySanitizer, dlopen) { 2420 char path[4096]; 2421 int res = PathToLoadable(path, sizeof(path)); 2422 assert(!res); 2423 2424 // We need to clear shadow for globals when doing dlopen. In order to test 2425 // this, we have to poison the shadow for the DSO before we load it. In 2426 // general this is difficult, but the loader tends to reload things in the 2427 // same place, so we open, close, and then reopen. The global should always 2428 // start out clean after dlopen. 2429 for (int i = 0; i < 2; i++) { 2430 void *lib = dlopen(path, RTLD_LAZY); 2431 if (lib == NULL) { 2432 printf("dlerror: %s\n", dlerror()); 2433 assert(lib != NULL); 2434 } 2435 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2436 assert(get_dso_global); 2437 void **dso_global = get_dso_global(); 2438 EXPECT_NOT_POISONED(*dso_global); 2439 __msan_poison(dso_global, sizeof(*dso_global)); 2440 EXPECT_POISONED(*dso_global); 2441 dlclose(lib); 2442 } 2443} 2444 2445// Regression test for a crash in dlopen() interceptor. 2446TEST(MemorySanitizer, dlopenFailed) { 2447 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2448 void *lib = dlopen(path, RTLD_LAZY); 2449 ASSERT_EQ(0, lib); 2450} 2451 2452#endif // MSAN_TEST_DISABLE_DLOPEN 2453 2454TEST(MemorySanitizer, sched_getaffinity) { 2455 cpu_set_t mask; 2456 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2457 ASSERT_EQ(0, res); 2458 EXPECT_NOT_POISONED(mask); 2459} 2460 2461TEST(MemorySanitizer, scanf) { 2462 const char *input = "42 hello"; 2463 int* d = new int; 2464 char* s = new char[7]; 2465 int res = sscanf(input, "%d %5s", d, s); 2466 printf("res %d\n", res); 2467 assert(res == 2); 2468 EXPECT_NOT_POISONED(*d); 2469 EXPECT_NOT_POISONED(s[0]); 2470 EXPECT_NOT_POISONED(s[1]); 2471 EXPECT_NOT_POISONED(s[2]); 2472 EXPECT_NOT_POISONED(s[3]); 2473 EXPECT_NOT_POISONED(s[4]); 2474 EXPECT_NOT_POISONED(s[5]); 2475 EXPECT_POISONED(s[6]); 2476 delete s; 2477 delete d; 2478} 2479 2480static void *SimpleThread_threadfn(void* data) { 2481 return new int; 2482} 2483 2484TEST(MemorySanitizer, SimpleThread) { 2485 pthread_t t; 2486 void *p; 2487 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2488 assert(!res); 2489 EXPECT_NOT_POISONED(t); 2490 res = pthread_join(t, &p); 2491 assert(!res); 2492 EXPECT_NOT_POISONED(p); 2493 delete (int*)p; 2494} 2495 2496static void *SmallStackThread_threadfn(void* data) { 2497 return 0; 2498} 2499 2500TEST(MemorySanitizer, SmallStackThread) { 2501 pthread_attr_t attr; 2502 pthread_t t; 2503 void *p; 2504 int res; 2505 res = pthread_attr_init(&attr); 2506 ASSERT_EQ(0, res); 2507 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2508 ASSERT_EQ(0, res); 2509 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2510 ASSERT_EQ(0, res); 2511 res = pthread_join(t, &p); 2512 ASSERT_EQ(0, res); 2513 res = pthread_attr_destroy(&attr); 2514 ASSERT_EQ(0, res); 2515} 2516 2517TEST(MemorySanitizer, PreAllocatedStackThread) { 2518 pthread_attr_t attr; 2519 pthread_t t; 2520 int res; 2521 res = pthread_attr_init(&attr); 2522 ASSERT_EQ(0, res); 2523 void *stack; 2524 const size_t kStackSize = 64 * 1024; 2525 res = posix_memalign(&stack, 4096, kStackSize); 2526 ASSERT_EQ(0, res); 2527 res = pthread_attr_setstack(&attr, stack, kStackSize); 2528 ASSERT_EQ(0, res); 2529 // A small self-allocated stack can not be extended by the tool. 2530 // In this case pthread_create is expected to fail. 2531 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2532 EXPECT_NE(0, res); 2533 res = pthread_attr_destroy(&attr); 2534 ASSERT_EQ(0, res); 2535} 2536 2537TEST(MemorySanitizer, pthread_attr_get) { 2538 pthread_attr_t attr; 2539 int res; 2540 res = pthread_attr_init(&attr); 2541 ASSERT_EQ(0, res); 2542 { 2543 int v; 2544 res = pthread_attr_getdetachstate(&attr, &v); 2545 ASSERT_EQ(0, res); 2546 EXPECT_NOT_POISONED(v); 2547 } 2548 { 2549 size_t v; 2550 res = pthread_attr_getguardsize(&attr, &v); 2551 ASSERT_EQ(0, res); 2552 EXPECT_NOT_POISONED(v); 2553 } 2554 { 2555 struct sched_param v; 2556 res = pthread_attr_getschedparam(&attr, &v); 2557 ASSERT_EQ(0, res); 2558 EXPECT_NOT_POISONED(v); 2559 } 2560 { 2561 int v; 2562 res = pthread_attr_getschedpolicy(&attr, &v); 2563 ASSERT_EQ(0, res); 2564 EXPECT_NOT_POISONED(v); 2565 } 2566 { 2567 int v; 2568 res = pthread_attr_getinheritsched(&attr, &v); 2569 ASSERT_EQ(0, res); 2570 EXPECT_NOT_POISONED(v); 2571 } 2572 { 2573 int v; 2574 res = pthread_attr_getscope(&attr, &v); 2575 ASSERT_EQ(0, res); 2576 EXPECT_NOT_POISONED(v); 2577 } 2578 { 2579 size_t v; 2580 res = pthread_attr_getstacksize(&attr, &v); 2581 ASSERT_EQ(0, res); 2582 EXPECT_NOT_POISONED(v); 2583 } 2584 { 2585 void *v; 2586 size_t w; 2587 res = pthread_attr_getstack(&attr, &v, &w); 2588 ASSERT_EQ(0, res); 2589 EXPECT_NOT_POISONED(v); 2590 EXPECT_NOT_POISONED(w); 2591 } 2592 { 2593 cpu_set_t v; 2594 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 2595 ASSERT_EQ(0, res); 2596 EXPECT_NOT_POISONED(v); 2597 } 2598 res = pthread_attr_destroy(&attr); 2599 ASSERT_EQ(0, res); 2600} 2601 2602TEST(MemorySanitizer, pthread_getschedparam) { 2603 int policy; 2604 struct sched_param param; 2605 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2606 ASSERT_EQ(0, res); 2607 EXPECT_NOT_POISONED(policy); 2608 EXPECT_NOT_POISONED(param.sched_priority); 2609} 2610 2611TEST(MemorySanitizer, pthread_key_create) { 2612 pthread_key_t key; 2613 int res = pthread_key_create(&key, NULL); 2614 assert(!res); 2615 EXPECT_NOT_POISONED(key); 2616 res = pthread_key_delete(key); 2617 assert(!res); 2618} 2619 2620namespace { 2621struct SignalCondArg { 2622 pthread_cond_t* cond; 2623 pthread_mutex_t* mu; 2624 bool broadcast; 2625}; 2626 2627void *SignalCond(void *param) { 2628 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2629 pthread_mutex_lock(arg->mu); 2630 if (arg->broadcast) 2631 pthread_cond_broadcast(arg->cond); 2632 else 2633 pthread_cond_signal(arg->cond); 2634 pthread_mutex_unlock(arg->mu); 2635 return 0; 2636} 2637} // namespace 2638 2639TEST(MemorySanitizer, pthread_cond_wait) { 2640 pthread_cond_t cond; 2641 pthread_mutex_t mu; 2642 SignalCondArg args = {&cond, &mu, false}; 2643 pthread_cond_init(&cond, 0); 2644 pthread_mutex_init(&mu, 0); 2645 pthread_mutex_lock(&mu); 2646 2647 // signal 2648 pthread_t thr; 2649 pthread_create(&thr, 0, SignalCond, &args); 2650 int res = pthread_cond_wait(&cond, &mu); 2651 assert(!res); 2652 pthread_join(thr, 0); 2653 2654 // broadcast 2655 args.broadcast = true; 2656 pthread_create(&thr, 0, SignalCond, &args); 2657 res = pthread_cond_wait(&cond, &mu); 2658 assert(!res); 2659 pthread_join(thr, 0); 2660 2661 pthread_mutex_unlock(&mu); 2662 pthread_mutex_destroy(&mu); 2663 pthread_cond_destroy(&cond); 2664} 2665 2666TEST(MemorySanitizer, tmpnam) { 2667 char s[L_tmpnam]; 2668 char *res = tmpnam(s); 2669 ASSERT_EQ(s, res); 2670 EXPECT_NOT_POISONED(strlen(res)); 2671} 2672 2673TEST(MemorySanitizer, tempnam) { 2674 char *res = tempnam(NULL, "zzz"); 2675 EXPECT_NOT_POISONED(strlen(res)); 2676 free(res); 2677} 2678 2679TEST(MemorySanitizer, posix_memalign) { 2680 void *p; 2681 EXPECT_POISONED(p); 2682 int res = posix_memalign(&p, 4096, 13); 2683 ASSERT_EQ(0, res); 2684 EXPECT_NOT_POISONED(p); 2685 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2686 free(p); 2687} 2688 2689TEST(MemorySanitizer, memalign) { 2690 void *p = memalign(4096, 13); 2691 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2692 free(p); 2693} 2694 2695TEST(MemorySanitizer, valloc) { 2696 void *a = valloc(100); 2697 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2698 free(a); 2699} 2700 2701TEST(MemorySanitizer, pvalloc) { 2702 void *p = pvalloc(kPageSize + 100); 2703 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2704 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2705 free(p); 2706 2707 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2708 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2709 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2710 free(p); 2711} 2712 2713TEST(MemorySanitizer, inet_pton) { 2714 const char *s = "1:0:0:0:0:0:0:8"; 2715 unsigned char buf[sizeof(struct in6_addr)]; 2716 int res = inet_pton(AF_INET6, s, buf); 2717 ASSERT_EQ(1, res); 2718 EXPECT_NOT_POISONED(buf[0]); 2719 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2720 2721 char s_out[INET6_ADDRSTRLEN]; 2722 EXPECT_POISONED(s_out[3]); 2723 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2724 ASSERT_NE((void*)0, q); 2725 EXPECT_NOT_POISONED(s_out[3]); 2726} 2727 2728TEST(MemorySanitizer, inet_aton) { 2729 const char *s = "127.0.0.1"; 2730 struct in_addr in[2]; 2731 int res = inet_aton(s, in); 2732 ASSERT_NE(0, res); 2733 EXPECT_NOT_POISONED(in[0]); 2734 EXPECT_POISONED(*(char *)(in + 1)); 2735} 2736 2737TEST(MemorySanitizer, uname) { 2738 struct utsname u; 2739 int res = uname(&u); 2740 assert(!res); 2741 EXPECT_NOT_POISONED(strlen(u.sysname)); 2742 EXPECT_NOT_POISONED(strlen(u.nodename)); 2743 EXPECT_NOT_POISONED(strlen(u.release)); 2744 EXPECT_NOT_POISONED(strlen(u.version)); 2745 EXPECT_NOT_POISONED(strlen(u.machine)); 2746} 2747 2748TEST(MemorySanitizer, gethostname) { 2749 char buf[100]; 2750 int res = gethostname(buf, 100); 2751 assert(!res); 2752 EXPECT_NOT_POISONED(strlen(buf)); 2753} 2754 2755TEST(MemorySanitizer, sysinfo) { 2756 struct sysinfo info; 2757 int res = sysinfo(&info); 2758 assert(!res); 2759 EXPECT_NOT_POISONED(info); 2760} 2761 2762TEST(MemorySanitizer, getpwuid) { 2763 struct passwd *p = getpwuid(0); // root 2764 assert(p); 2765 EXPECT_NOT_POISONED(p->pw_name); 2766 assert(p->pw_name); 2767 EXPECT_NOT_POISONED(p->pw_name[0]); 2768 EXPECT_NOT_POISONED(p->pw_uid); 2769 assert(p->pw_uid == 0); 2770} 2771 2772TEST(MemorySanitizer, getpwnam_r) { 2773 struct passwd pwd; 2774 struct passwd *pwdres; 2775 char buf[10000]; 2776 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2777 assert(!res); 2778 EXPECT_NOT_POISONED(pwd.pw_name); 2779 assert(pwd.pw_name); 2780 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2781 EXPECT_NOT_POISONED(pwd.pw_uid); 2782 assert(pwd.pw_uid == 0); 2783} 2784 2785TEST(MemorySanitizer, getpwnam_r_positive) { 2786 struct passwd pwd; 2787 struct passwd *pwdres; 2788 char s[5]; 2789 strncpy(s, "abcd", 5); 2790 __msan_poison(s, 5); 2791 char buf[10000]; 2792 int res; 2793 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2794} 2795 2796TEST(MemorySanitizer, getgrnam_r) { 2797 struct group grp; 2798 struct group *grpres; 2799 char buf[10000]; 2800 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2801 assert(!res); 2802 EXPECT_NOT_POISONED(grp.gr_name); 2803 assert(grp.gr_name); 2804 EXPECT_NOT_POISONED(grp.gr_name[0]); 2805 EXPECT_NOT_POISONED(grp.gr_gid); 2806} 2807 2808TEST(MemorySanitizer, getgroups) { 2809 int n = getgroups(0, 0); 2810 gid_t *gids = new gid_t[n]; 2811 int res = getgroups(n, gids); 2812 ASSERT_EQ(n, res); 2813 for (int i = 0; i < n; ++i) 2814 EXPECT_NOT_POISONED(gids[i]); 2815} 2816 2817TEST(MemorySanitizer, wordexp) { 2818 wordexp_t w; 2819 int res = wordexp("a b c", &w, 0); 2820 ASSERT_EQ(0, res); 2821 ASSERT_EQ(3, w.we_wordc); 2822 ASSERT_STREQ("a", w.we_wordv[0]); 2823 ASSERT_STREQ("b", w.we_wordv[1]); 2824 ASSERT_STREQ("c", w.we_wordv[2]); 2825} 2826 2827template<class T> 2828static bool applySlt(T value, T shadow) { 2829 __msan_partial_poison(&value, &shadow, sizeof(T)); 2830 volatile bool zzz = true; 2831 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2832 // a shift-and-trunc to get at the highest bit. 2833 volatile bool v = value < 0 || zzz; 2834 return v; 2835} 2836 2837TEST(MemorySanitizer, SignedCompareWithZero) { 2838 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2839 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2840 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2841 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2842 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2843 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2844} 2845 2846template <class T, class S> 2847static T poisoned(T Va, S Sa) { 2848 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2849 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2850 T a; 2851 a = Va; 2852 __msan_partial_poison(&a, &Sa, sizeof(T)); 2853 return a; 2854} 2855 2856TEST(MemorySanitizer, ICmpRelational) { 2857 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2858 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2859 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2860 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2861 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2862 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2863 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2864 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2865 poisoned(-1, 0xFFFFFFFFU)); 2866 2867 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2868 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2869 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2870 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2871 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2872 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2873 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2874 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2875 poisoned(-1, 0xFFFFFFFFU)); 2876 2877 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2878 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2879 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2880 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2881 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2882 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2883 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2884 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2885 poisoned(-1, 0xFFFFFFFFU)); 2886 2887 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2888 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2889 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2890 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2891 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2892 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2893 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2894 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2895 poisoned(-1, 0xFFFFFFFFU)); 2896 2897 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2898 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2899 2900 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2901} 2902 2903#if MSAN_HAS_M128 2904TEST(MemorySanitizer, ICmpVectorRelational) { 2905 EXPECT_NOT_POISONED( 2906 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 2907 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 2908 EXPECT_NOT_POISONED( 2909 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 2910 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 2911 EXPECT_POISONED( 2912 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 2913 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 2914 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 2915 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 2916} 2917#endif 2918 2919// Volatile bitfield store is implemented as load-mask-store 2920// Test that we don't warn on the store of (uninitialized) padding. 2921struct VolatileBitfieldStruct { 2922 volatile unsigned x : 1; 2923 unsigned y : 1; 2924}; 2925 2926TEST(MemorySanitizer, VolatileBitfield) { 2927 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 2928 S->x = 1; 2929 EXPECT_NOT_POISONED((unsigned)S->x); 2930 EXPECT_POISONED((unsigned)S->y); 2931} 2932 2933TEST(MemorySanitizer, UnalignedLoad) { 2934 char x[32]; 2935 memset(x + 8, 0, 16); 2936 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 2937 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 2938 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 2939 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 2940 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 2941 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 2942 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 2943 2944 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 2945 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 2946 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 2947 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 2948 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 2949 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 2950 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 2951 2952 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 2953 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 2954 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 2955 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 2956 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 2957 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 2958 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 2959 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 2960 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 2961} 2962 2963TEST(MemorySanitizer, UnalignedStore16) { 2964 char x[5]; 2965 U2 y = 0; 2966 __msan_poison(&y, 1); 2967 __sanitizer_unaligned_store16(x + 1, y); 2968 EXPECT_POISONED(x[0]); 2969 EXPECT_POISONED(x[1]); 2970 EXPECT_NOT_POISONED(x[2]); 2971 EXPECT_POISONED(x[3]); 2972 EXPECT_POISONED(x[4]); 2973} 2974 2975TEST(MemorySanitizer, UnalignedStore32) { 2976 char x[8]; 2977 U4 y4 = 0; 2978 __msan_poison(&y4, 2); 2979 __sanitizer_unaligned_store32(x+3, y4); 2980 EXPECT_POISONED(x[0]); 2981 EXPECT_POISONED(x[1]); 2982 EXPECT_POISONED(x[2]); 2983 EXPECT_POISONED(x[3]); 2984 EXPECT_POISONED(x[4]); 2985 EXPECT_NOT_POISONED(x[5]); 2986 EXPECT_NOT_POISONED(x[6]); 2987 EXPECT_POISONED(x[7]); 2988} 2989 2990TEST(MemorySanitizer, UnalignedStore64) { 2991 char x[16]; 2992 U8 y = 0; 2993 __msan_poison(&y, 3); 2994 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 2995 __sanitizer_unaligned_store64(x+3, y); 2996 EXPECT_POISONED(x[0]); 2997 EXPECT_POISONED(x[1]); 2998 EXPECT_POISONED(x[2]); 2999 EXPECT_POISONED(x[3]); 3000 EXPECT_POISONED(x[4]); 3001 EXPECT_POISONED(x[5]); 3002 EXPECT_NOT_POISONED(x[6]); 3003 EXPECT_NOT_POISONED(x[7]); 3004 EXPECT_NOT_POISONED(x[8]); 3005 EXPECT_POISONED(x[9]); 3006 EXPECT_NOT_POISONED(x[10]); 3007 EXPECT_POISONED(x[11]); 3008} 3009 3010TEST(MemorySanitizerDr, StoreInDSOTest) { 3011 if (!__msan_has_dynamic_component()) return; 3012 char* s = new char[10]; 3013 dso_memfill(s, 9); 3014 EXPECT_NOT_POISONED(s[5]); 3015 EXPECT_POISONED(s[9]); 3016} 3017 3018int return_poisoned_int() { 3019 return ReturnPoisoned<U8>(); 3020} 3021 3022TEST(MemorySanitizerDr, ReturnFromDSOTest) { 3023 if (!__msan_has_dynamic_component()) return; 3024 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 3025} 3026 3027NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 3028 EXPECT_POISONED(x); 3029 EXPECT_POISONED(y); 3030 EXPECT_POISONED(z); 3031 return 0; 3032} 3033 3034static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 3035 EXPECT_NOT_POISONED(x); 3036 EXPECT_NOT_POISONED(y); 3037 EXPECT_NOT_POISONED(z); 3038 return 0; 3039} 3040 3041TEST(MemorySanitizerDr, CallFromDSOTest) { 3042 if (!__msan_has_dynamic_component()) return; 3043 S8* x = GetPoisoned<S8>(); 3044 S8* y = GetPoisoned<S8>(); 3045 S8* z = GetPoisoned<S8>(); 3046 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 3047 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 3048} 3049 3050static void StackStoreInDSOFn(int* x, int* y) { 3051 EXPECT_NOT_POISONED(*x); 3052 EXPECT_NOT_POISONED(*y); 3053} 3054 3055TEST(MemorySanitizerDr, StackStoreInDSOTest) { 3056 if (!__msan_has_dynamic_component()) return; 3057 dso_stack_store(StackStoreInDSOFn, 1); 3058} 3059 3060TEST(MemorySanitizerOrigins, SetGet) { 3061 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 3062 if (!TrackingOrigins()) return; 3063 int x; 3064 __msan_set_origin(&x, sizeof(x), 1234); 3065 EXPECT_EQ(1234, __msan_get_origin(&x)); 3066 __msan_set_origin(&x, sizeof(x), 5678); 3067 EXPECT_EQ(5678, __msan_get_origin(&x)); 3068 __msan_set_origin(&x, sizeof(x), 0); 3069 EXPECT_EQ(0, __msan_get_origin(&x)); 3070} 3071 3072namespace { 3073struct S { 3074 U4 dummy; 3075 U2 a; 3076 U2 b; 3077}; 3078 3079// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 3080TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 3081 if (!TrackingOrigins()) return; 3082 3083 S s; 3084 U4 origin = rand(); // NOLINT 3085 s.a = *GetPoisonedO<U2>(0, origin); 3086 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3087 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3088 3089 s.b = 42; 3090 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3091 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3092} 3093} // namespace 3094 3095template<class T, class BinaryOp> 3096INLINE 3097void BinaryOpOriginTest(BinaryOp op) { 3098 U4 ox = rand(); //NOLINT 3099 U4 oy = rand(); //NOLINT 3100 T *x = GetPoisonedO<T>(0, ox, 0); 3101 T *y = GetPoisonedO<T>(1, oy, 0); 3102 T *z = GetPoisonedO<T>(2, 0, 0); 3103 3104 *z = op(*x, *y); 3105 U4 origin = __msan_get_origin(z); 3106 EXPECT_POISONED_O(*z, origin); 3107 EXPECT_EQ(true, origin == ox || origin == oy); 3108 3109 // y is poisoned, x is not. 3110 *x = 10101; 3111 *y = *GetPoisonedO<T>(1, oy); 3112 break_optimization(x); 3113 __msan_set_origin(z, sizeof(*z), 0); 3114 *z = op(*x, *y); 3115 EXPECT_POISONED_O(*z, oy); 3116 EXPECT_EQ(__msan_get_origin(z), oy); 3117 3118 // x is poisoned, y is not. 3119 *x = *GetPoisonedO<T>(0, ox); 3120 *y = 10101010; 3121 break_optimization(y); 3122 __msan_set_origin(z, sizeof(*z), 0); 3123 *z = op(*x, *y); 3124 EXPECT_POISONED_O(*z, ox); 3125 EXPECT_EQ(__msan_get_origin(z), ox); 3126} 3127 3128template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 3129template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 3130template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 3131template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 3132template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 3133template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 3134 3135TEST(MemorySanitizerOrigins, BinaryOp) { 3136 if (!TrackingOrigins()) return; 3137 BinaryOpOriginTest<S8>(XOR<S8>); 3138 BinaryOpOriginTest<U8>(ADD<U8>); 3139 BinaryOpOriginTest<S4>(SUB<S4>); 3140 BinaryOpOriginTest<S4>(MUL<S4>); 3141 BinaryOpOriginTest<U4>(OR<U4>); 3142 BinaryOpOriginTest<U4>(AND<U4>); 3143 BinaryOpOriginTest<double>(ADD<U4>); 3144 BinaryOpOriginTest<float>(ADD<S4>); 3145 BinaryOpOriginTest<double>(ADD<double>); 3146 BinaryOpOriginTest<float>(ADD<double>); 3147} 3148 3149TEST(MemorySanitizerOrigins, Unary) { 3150 if (!TrackingOrigins()) return; 3151 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3152 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3153 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3154 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3155 3156 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3157 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3158 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3159 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3160 3161 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3162 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3163 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3164 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3165 3166 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3167 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3168 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3169 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3170 3171 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3172 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 3173} 3174 3175TEST(MemorySanitizerOrigins, EQ) { 3176 if (!TrackingOrigins()) return; 3177 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 3178 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 3179 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 3180} 3181 3182TEST(MemorySanitizerOrigins, DIV) { 3183 if (!TrackingOrigins()) return; 3184 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 3185 unsigned o = __LINE__; 3186 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 3187} 3188 3189TEST(MemorySanitizerOrigins, SHIFT) { 3190 if (!TrackingOrigins()) return; 3191 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 3192 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 3193 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 3194 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 3195 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3196 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3197} 3198 3199template<class T, int N> 3200void MemCpyTest() { 3201 int ox = __LINE__; 3202 T *x = new T[N]; 3203 T *y = new T[N]; 3204 T *z = new T[N]; 3205 T *q = new T[N]; 3206 __msan_poison(x, N * sizeof(T)); 3207 __msan_set_origin(x, N * sizeof(T), ox); 3208 __msan_set_origin(y, N * sizeof(T), 777777); 3209 __msan_set_origin(z, N * sizeof(T), 888888); 3210 EXPECT_NOT_POISONED(x); 3211 memcpy(y, x, N * sizeof(T)); 3212 EXPECT_POISONED_O(y[0], ox); 3213 EXPECT_POISONED_O(y[N/2], ox); 3214 EXPECT_POISONED_O(y[N-1], ox); 3215 EXPECT_NOT_POISONED(x); 3216 void *res = mempcpy(q, x, N * sizeof(T)); 3217 ASSERT_EQ(q + N, res); 3218 EXPECT_POISONED_O(q[0], ox); 3219 EXPECT_POISONED_O(q[N/2], ox); 3220 EXPECT_POISONED_O(q[N-1], ox); 3221 EXPECT_NOT_POISONED(x); 3222 memmove(z, x, N * sizeof(T)); 3223 EXPECT_POISONED_O(z[0], ox); 3224 EXPECT_POISONED_O(z[N/2], ox); 3225 EXPECT_POISONED_O(z[N-1], ox); 3226} 3227 3228TEST(MemorySanitizerOrigins, LargeMemCpy) { 3229 if (!TrackingOrigins()) return; 3230 MemCpyTest<U1, 10000>(); 3231 MemCpyTest<U8, 10000>(); 3232} 3233 3234TEST(MemorySanitizerOrigins, SmallMemCpy) { 3235 if (!TrackingOrigins()) return; 3236 MemCpyTest<U8, 1>(); 3237 MemCpyTest<U8, 2>(); 3238 MemCpyTest<U8, 3>(); 3239} 3240 3241TEST(MemorySanitizerOrigins, Select) { 3242 if (!TrackingOrigins()) return; 3243 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 3244 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3245 S4 x; 3246 break_optimization(&x); 3247 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 3248 3249 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 3250 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 3251} 3252 3253extern "C" 3254NOINLINE char AllocaTO() { 3255 int ar[100]; 3256 break_optimization(ar); 3257 return ar[10]; 3258 // fprintf(stderr, "Descr: %s\n", 3259 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 3260} 3261 3262TEST(MemorySanitizerOrigins, Alloca) { 3263 if (!TrackingOrigins()) return; 3264 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3265 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3266 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3267 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3268} 3269 3270// FIXME: replace with a lit-like test. 3271TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 3272 if (!TrackingOrigins()) return; 3273 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 3274} 3275 3276NOINLINE int RetvalOriginTest(U4 origin) { 3277 int *a = new int; 3278 break_optimization(a); 3279 __msan_set_origin(a, sizeof(*a), origin); 3280 int res = *a; 3281 delete a; 3282 return res; 3283} 3284 3285TEST(MemorySanitizerOrigins, Retval) { 3286 if (!TrackingOrigins()) return; 3287 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3288} 3289 3290NOINLINE void ParamOriginTest(int param, U4 origin) { 3291 EXPECT_POISONED_O(param, origin); 3292} 3293 3294TEST(MemorySanitizerOrigins, Param) { 3295 if (!TrackingOrigins()) return; 3296 int *a = new int; 3297 U4 origin = __LINE__; 3298 break_optimization(a); 3299 __msan_set_origin(a, sizeof(*a), origin); 3300 ParamOriginTest(*a, origin); 3301 delete a; 3302} 3303 3304TEST(MemorySanitizerOrigins, Invoke) { 3305 if (!TrackingOrigins()) return; 3306 StructWithDtor s; // Will cause the calls to become invokes. 3307 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3308} 3309 3310TEST(MemorySanitizerOrigins, strlen) { 3311 S8 alignment; 3312 break_optimization(&alignment); 3313 char x[4] = {'a', 'b', 0, 0}; 3314 __msan_poison(&x[2], 1); 3315 U4 origin = __LINE__; 3316 __msan_set_origin(x, sizeof(x), origin); 3317 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 3318} 3319 3320TEST(MemorySanitizerOrigins, wcslen) { 3321 wchar_t w[3] = {'a', 'b', 0}; 3322 U4 origin = __LINE__; 3323 __msan_set_origin(w, sizeof(w), origin); 3324 __msan_poison(&w[2], sizeof(wchar_t)); 3325 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3326} 3327 3328#if MSAN_HAS_M128 3329TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3330 __m128 x, y; 3331 U4 origin = __LINE__; 3332 __msan_set_origin(&x, sizeof(x), origin); 3333 __msan_poison(&x, sizeof(x)); 3334 __builtin_ia32_storeups((float*)&y, x); 3335 EXPECT_POISONED_O(y, origin); 3336} 3337#endif 3338 3339NOINLINE void RecursiveMalloc(int depth) { 3340 static int count; 3341 count++; 3342 if ((count % (1024 * 1024)) == 0) 3343 printf("RecursiveMalloc: %d\n", count); 3344 int *x1 = new int; 3345 int *x2 = new int; 3346 break_optimization(x1); 3347 break_optimization(x2); 3348 if (depth > 0) { 3349 RecursiveMalloc(depth-1); 3350 RecursiveMalloc(depth-1); 3351 } 3352 delete x1; 3353 delete x2; 3354} 3355 3356TEST(MemorySanitizer, Select) { 3357 int x; 3358 int volatile* p = &x; 3359 int z = *p ? 1 : 0; 3360 EXPECT_POISONED(z); 3361} 3362 3363TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3364 RecursiveMalloc(22); 3365} 3366 3367TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3368 size_t sizes[] = {0, 20, 5000, 1<<20}; 3369 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3370 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3371 EXPECT_EQ(alloc_size, sizes[i]); 3372 } 3373} 3374 3375TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3376 char *array = reinterpret_cast<char*>(malloc(100)); 3377 int *int_ptr = new int; 3378 3379 EXPECT_TRUE(__msan_get_ownership(array)); 3380 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3381 3382 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3383 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3384 3385 void *wild_addr = reinterpret_cast<void*>(0x1); 3386 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3387 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3388 3389 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3390 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3391 3392 // NULL is a valid argument for GetAllocatedSize but is not owned. 3393 EXPECT_FALSE(__msan_get_ownership(NULL)); 3394 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3395 3396 free(array); 3397 EXPECT_FALSE(__msan_get_ownership(array)); 3398 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3399 3400 delete int_ptr; 3401} 3402