msan_test.cc revision 78d77c2638b8e02020737c9b296ce2198e4c58e6
19b35249446b07f40ac5fcc3205f2c048616efacchkuang//===-- msan_test.cc ------------------------------------------------------===// 29b35249446b07f40ac5fcc3205f2c048616efacchkuang// 39b35249446b07f40ac5fcc3205f2c048616efacchkuang// The LLVM Compiler Infrastructure 49b35249446b07f40ac5fcc3205f2c048616efacchkuang// 59b35249446b07f40ac5fcc3205f2c048616efacchkuang// This file is distributed under the University of Illinois Open Source 69b35249446b07f40ac5fcc3205f2c048616efacchkuang// License. See LICENSE.TXT for details. 79b35249446b07f40ac5fcc3205f2c048616efacchkuang// 89b35249446b07f40ac5fcc3205f2c048616efacchkuang//===----------------------------------------------------------------------===// 99b35249446b07f40ac5fcc3205f2c048616efacchkuang// 109b35249446b07f40ac5fcc3205f2c048616efacchkuang// This file is a part of MemorySanitizer. 119b35249446b07f40ac5fcc3205f2c048616efacchkuang// 129b35249446b07f40ac5fcc3205f2c048616efacchkuang// MemorySanitizer unit tests. 139b35249446b07f40ac5fcc3205f2c048616efacchkuang//===----------------------------------------------------------------------===// 149b35249446b07f40ac5fcc3205f2c048616efacchkuang 159b35249446b07f40ac5fcc3205f2c048616efacchkuang#ifndef MSAN_EXTERNAL_TEST_CONFIG 169b35249446b07f40ac5fcc3205f2c048616efacchkuang#include "msan_test_config.h" 179b35249446b07f40ac5fcc3205f2c048616efacchkuang#endif // MSAN_EXTERNAL_TEST_CONFIG 189b35249446b07f40ac5fcc3205f2c048616efacchkuang 199b35249446b07f40ac5fcc3205f2c048616efacchkuang#include "sanitizer/msan_interface.h" 20b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "msandr_test_so.h" 21b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 22b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include <inttypes.h> 23b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include <stdlib.h> 249b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <stdarg.h> 259b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <stdio.h> 269b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <assert.h> 279b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <wchar.h> 289b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <math.h> 299b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <malloc.h> 309b35249446b07f40ac5fcc3205f2c048616efacchkuang 319b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <arpa/inet.h> 329b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <dlfcn.h> 339b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <grp.h> 349b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <unistd.h> 359b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <link.h> 369b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <limits.h> 379b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/time.h> 389b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <poll.h> 399b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/types.h> 409b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/stat.h> 419b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <fcntl.h> 429b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/resource.h> 439b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/ioctl.h> 449b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/statvfs.h> 459b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/sysinfo.h> 469b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/utsname.h> 479b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/mman.h> 489b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/vfs.h> 499b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <dirent.h> 509b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <pwd.h> 519b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/socket.h> 529b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <netdb.h> 539b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <wordexp.h> 549b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <mntent.h> 559b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <netinet/ether.h> 569b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/ipc.h> 579b35249446b07f40ac5fcc3205f2c048616efacchkuang#include <sys/shm.h> 589b35249446b07f40ac5fcc3205f2c048616efacchkuang 599b35249446b07f40ac5fcc3205f2c048616efacchkuang#if defined(__i386__) || defined(__x86_64__) 609b35249446b07f40ac5fcc3205f2c048616efacchkuang# include <emmintrin.h> 619b35249446b07f40ac5fcc3205f2c048616efacchkuang# define MSAN_HAS_M128 1 629b35249446b07f40ac5fcc3205f2c048616efacchkuang#else 639b35249446b07f40ac5fcc3205f2c048616efacchkuang# define MSAN_HAS_M128 0 649b35249446b07f40ac5fcc3205f2c048616efacchkuang#endif 659b35249446b07f40ac5fcc3205f2c048616efacchkuang 669b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic const int kPageSize = 4096; 679b35249446b07f40ac5fcc3205f2c048616efacchkuang 689b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef unsigned char U1; 699b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef unsigned short U2; // NOLINT 709b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef unsigned int U4; 719b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef unsigned long long U8; // NOLINT 729b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef signed char S1; 739b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef signed short S2; // NOLINT 749b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef signed int S4; 759b35249446b07f40ac5fcc3205f2c048616efacchkuangtypedef signed long long S8; // NOLINT 769b35249446b07f40ac5fcc3205f2c048616efacchkuang#define NOINLINE __attribute__((noinline)) 779b35249446b07f40ac5fcc3205f2c048616efacchkuang#define INLINE __attribute__((always_inline)) 789b35249446b07f40ac5fcc3205f2c048616efacchkuang 799b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic bool TrackingOrigins() { 809b35249446b07f40ac5fcc3205f2c048616efacchkuang S8 x; 819b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_origin(&x, sizeof(x), 0x1234); 829b35249446b07f40ac5fcc3205f2c048616efacchkuang U4 origin = __msan_get_origin(&x); 839b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_origin(&x, sizeof(x), 0); 849b35249446b07f40ac5fcc3205f2c048616efacchkuang return origin == 0x1234; 859b35249446b07f40ac5fcc3205f2c048616efacchkuang} 869b35249446b07f40ac5fcc3205f2c048616efacchkuang 879b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_UMR(action) \ 889b35249446b07f40ac5fcc3205f2c048616efacchkuang do { \ 899b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_expect_umr(1); \ 909b35249446b07f40ac5fcc3205f2c048616efacchkuang action; \ 919b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_expect_umr(0); \ 929b35249446b07f40ac5fcc3205f2c048616efacchkuang } while (0) 939b35249446b07f40ac5fcc3205f2c048616efacchkuang 949b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_UMR_O(action, origin) \ 959b35249446b07f40ac5fcc3205f2c048616efacchkuang do { \ 969b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_expect_umr(1); \ 979b35249446b07f40ac5fcc3205f2c048616efacchkuang action; \ 989b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_expect_umr(0); \ 999b35249446b07f40ac5fcc3205f2c048616efacchkuang if (TrackingOrigins()) \ 1009b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_EQ(origin, __msan_get_umr_origin()); \ 1019b35249446b07f40ac5fcc3205f2c048616efacchkuang } while (0) 1029b35249446b07f40ac5fcc3205f2c048616efacchkuang 1039b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_UMR_S(action, stack_origin) \ 1049b35249446b07f40ac5fcc3205f2c048616efacchkuang do { \ 1059b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_expect_umr(1); \ 1069b35249446b07f40ac5fcc3205f2c048616efacchkuang action; \ 1079b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_expect_umr(0); \ 1089b35249446b07f40ac5fcc3205f2c048616efacchkuang U4 id = __msan_get_umr_origin(); \ 1099b35249446b07f40ac5fcc3205f2c048616efacchkuang const char *str = __msan_get_origin_descr_if_stack(id); \ 1109b35249446b07f40ac5fcc3205f2c048616efacchkuang if (!str || strcmp(str, stack_origin)) { \ 1119b35249446b07f40ac5fcc3205f2c048616efacchkuang fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \ 1129b35249446b07f40ac5fcc3205f2c048616efacchkuang id, stack_origin, str); \ 1139b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_EQ(1, 0); \ 1149b35249446b07f40ac5fcc3205f2c048616efacchkuang } \ 1159b35249446b07f40ac5fcc3205f2c048616efacchkuang } while (0) 1169b35249446b07f40ac5fcc3205f2c048616efacchkuang 1179b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_POISONED(x) ExpectPoisoned(x) 1189b35249446b07f40ac5fcc3205f2c048616efacchkuang 1199b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<typename T> 1209b35249446b07f40ac5fcc3205f2c048616efacchkuangvoid ExpectPoisoned(const T& t) { 1219b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 1229b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1239b35249446b07f40ac5fcc3205f2c048616efacchkuang 1249b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_POISONED_O(x, origin) \ 1259b35249446b07f40ac5fcc3205f2c048616efacchkuang ExpectPoisonedWithOrigin(x, origin) 1269b35249446b07f40ac5fcc3205f2c048616efacchkuang 1279b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<typename T> 1289b35249446b07f40ac5fcc3205f2c048616efacchkuangvoid ExpectPoisonedWithOrigin(const T& t, unsigned origin) { 1299b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 1309b35249446b07f40ac5fcc3205f2c048616efacchkuang if (TrackingOrigins()) 1319b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_EQ(origin, __msan_get_origin((void*)&t)); 1329b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1339b35249446b07f40ac5fcc3205f2c048616efacchkuang 1349b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_POISONED_S(x, stack_origin) \ 1359b35249446b07f40ac5fcc3205f2c048616efacchkuang ExpectPoisonedWithStackOrigin(x, stack_origin) 1369b35249446b07f40ac5fcc3205f2c048616efacchkuang 1379b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<typename T> 1389b35249446b07f40ac5fcc3205f2c048616efacchkuangvoid ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) { 1399b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); 1409b35249446b07f40ac5fcc3205f2c048616efacchkuang U4 id = __msan_get_origin((void*)&t); 1419b35249446b07f40ac5fcc3205f2c048616efacchkuang const char *str = __msan_get_origin_descr_if_stack(id); 1429b35249446b07f40ac5fcc3205f2c048616efacchkuang if (!str || strcmp(str, stack_origin)) { 1439b35249446b07f40ac5fcc3205f2c048616efacchkuang fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", 1449b35249446b07f40ac5fcc3205f2c048616efacchkuang id, stack_origin, str); 1459b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_EQ(1, 0); 1469b35249446b07f40ac5fcc3205f2c048616efacchkuang } 1479b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1489b35249446b07f40ac5fcc3205f2c048616efacchkuang 1499b35249446b07f40ac5fcc3205f2c048616efacchkuang#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x) 1509b35249446b07f40ac5fcc3205f2c048616efacchkuang 1519b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<typename T> 1529b35249446b07f40ac5fcc3205f2c048616efacchkuangvoid ExpectNotPoisoned(const T& t) { 1539b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t))); 1549b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1559b35249446b07f40ac5fcc3205f2c048616efacchkuang 1569b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic U8 poisoned_array[100]; 1579b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<class T> 1589b35249446b07f40ac5fcc3205f2c048616efacchkuangT *GetPoisoned(int i = 0, T val = 0) { 1599b35249446b07f40ac5fcc3205f2c048616efacchkuang T *res = (T*)&poisoned_array[i]; 1609b35249446b07f40ac5fcc3205f2c048616efacchkuang *res = val; 1619b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_poison(&poisoned_array[i], sizeof(T)); 1629b35249446b07f40ac5fcc3205f2c048616efacchkuang return res; 1639b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1649b35249446b07f40ac5fcc3205f2c048616efacchkuang 1659b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<class T> 1669b35249446b07f40ac5fcc3205f2c048616efacchkuangT *GetPoisonedO(int i, U4 origin, T val = 0) { 1679b35249446b07f40ac5fcc3205f2c048616efacchkuang T *res = (T*)&poisoned_array[i]; 1689b35249446b07f40ac5fcc3205f2c048616efacchkuang *res = val; 1699b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_poison(&poisoned_array[i], sizeof(T)); 1709b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_set_origin(&poisoned_array[i], sizeof(T), origin); 1719b35249446b07f40ac5fcc3205f2c048616efacchkuang return res; 1729b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1739b35249446b07f40ac5fcc3205f2c048616efacchkuang 1749b35249446b07f40ac5fcc3205f2c048616efacchkuang// This function returns its parameter but in such a way that compiler 1759b35249446b07f40ac5fcc3205f2c048616efacchkuang// can not prove it. 1769b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<class T> 1779b35249446b07f40ac5fcc3205f2c048616efacchkuangNOINLINE 1789b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic T Ident(T t) { 1799b35249446b07f40ac5fcc3205f2c048616efacchkuang volatile T ret = t; 1809b35249446b07f40ac5fcc3205f2c048616efacchkuang return ret; 1819b35249446b07f40ac5fcc3205f2c048616efacchkuang} 1829b35249446b07f40ac5fcc3205f2c048616efacchkuang 1839b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } 1849b35249446b07f40ac5fcc3205f2c048616efacchkuang 1859b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic volatile int g_one = 1; 1869b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic volatile int g_zero = 0; 1879b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic volatile int g_0 = 0; 1889b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic volatile int g_1 = 1; 1899b35249446b07f40ac5fcc3205f2c048616efacchkuang 1909b35249446b07f40ac5fcc3205f2c048616efacchkuangS4 a_s4[100]; 1919b35249446b07f40ac5fcc3205f2c048616efacchkuangS8 a_s8[100]; 1929b35249446b07f40ac5fcc3205f2c048616efacchkuang 1939b35249446b07f40ac5fcc3205f2c048616efacchkuang// Check that malloc poisons memory. 1949b35249446b07f40ac5fcc3205f2c048616efacchkuang// A lot of tests below depend on this. 1959b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizerSanity, PoisonInMalloc) { 1969b35249446b07f40ac5fcc3205f2c048616efacchkuang int *x = (int*)malloc(sizeof(int)); 1979b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*x); 1989b35249446b07f40ac5fcc3205f2c048616efacchkuang free(x); 1999b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2009b35249446b07f40ac5fcc3205f2c048616efacchkuang 2019b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, NegativeTest1) { 2029b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 *x = GetPoisoned<S4>(); 2039b35249446b07f40ac5fcc3205f2c048616efacchkuang if (g_one) 2049b35249446b07f40ac5fcc3205f2c048616efacchkuang *x = 0; 2059b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*x); 2069b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2079b35249446b07f40ac5fcc3205f2c048616efacchkuang 2089b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, PositiveTest1) { 2099b35249446b07f40ac5fcc3205f2c048616efacchkuang // Load to store. 2109b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S1>()); 2119b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S2>()); 2129b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S4>()); 2139b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S8>()); 2149b35249446b07f40ac5fcc3205f2c048616efacchkuang 2159b35249446b07f40ac5fcc3205f2c048616efacchkuang // S->S conversions. 2169b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S1>()); 2179b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S1>()); 2189b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S1>()); 2199b35249446b07f40ac5fcc3205f2c048616efacchkuang 2209b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S2>()); 2219b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S2>()); 2229b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S2>()); 2239b35249446b07f40ac5fcc3205f2c048616efacchkuang 2249b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S4>()); 2259b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S4>()); 2269b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S4>()); 2279b35249446b07f40ac5fcc3205f2c048616efacchkuang 2289b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S8>()); 2299b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S8>()); 2309b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<S8>()); 2319b35249446b07f40ac5fcc3205f2c048616efacchkuang 2329b35249446b07f40ac5fcc3205f2c048616efacchkuang // ZExt 2339b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<U1>()); 2349b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<U1>()); 2359b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<U1>()); 2369b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<U2>()); 2379b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<U2>()); 2389b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<U4>()); 2399b35249446b07f40ac5fcc3205f2c048616efacchkuang 2409b35249446b07f40ac5fcc3205f2c048616efacchkuang // Unary ops. 2419b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(- *GetPoisoned<S4>()); 2429b35249446b07f40ac5fcc3205f2c048616efacchkuang 2439b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); 2449b35249446b07f40ac5fcc3205f2c048616efacchkuang 2459b35249446b07f40ac5fcc3205f2c048616efacchkuang 2469b35249446b07f40ac5fcc3205f2c048616efacchkuang a_s4[g_zero] = 1 - *GetPoisoned<S4>(); 2479b35249446b07f40ac5fcc3205f2c048616efacchkuang a_s4[g_zero] = 1 + *GetPoisoned<S4>(); 2489b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2499b35249446b07f40ac5fcc3205f2c048616efacchkuang 2509b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, Phi1) { 2519b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 c; 2529b35249446b07f40ac5fcc3205f2c048616efacchkuang if (g_one) { 2539b35249446b07f40ac5fcc3205f2c048616efacchkuang c = *GetPoisoned<S4>(); 2549b35249446b07f40ac5fcc3205f2c048616efacchkuang } else { 2559b35249446b07f40ac5fcc3205f2c048616efacchkuang break_optimization(0); 2569b35249446b07f40ac5fcc3205f2c048616efacchkuang c = 0; 2579b35249446b07f40ac5fcc3205f2c048616efacchkuang } 2589b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(c); 2599b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2609b35249446b07f40ac5fcc3205f2c048616efacchkuang 2619b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, Phi2) { 2629b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 i = *GetPoisoned<S4>(); 2639b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 n = g_one; 2649b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_UMR(for (; i < g_one; i++);); 2659b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(i); 2669b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2679b35249446b07f40ac5fcc3205f2c048616efacchkuang 2689b35249446b07f40ac5fcc3205f2c048616efacchkuangNOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } 2699b35249446b07f40ac5fcc3205f2c048616efacchkuangNOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } 2709b35249446b07f40ac5fcc3205f2c048616efacchkuangNOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } 2719b35249446b07f40ac5fcc3205f2c048616efacchkuang 2729b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, ArgTest) { 2739b35249446b07f40ac5fcc3205f2c048616efacchkuang Arg1ExpectUMR(*GetPoisoned<S4>()); 2749b35249446b07f40ac5fcc3205f2c048616efacchkuang Arg2ExpectUMR(0, *GetPoisoned<S4>()); 2759b35249446b07f40ac5fcc3205f2c048616efacchkuang Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); 2769b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2779b35249446b07f40ac5fcc3205f2c048616efacchkuang 2789b35249446b07f40ac5fcc3205f2c048616efacchkuang 2799b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, CallAndRet) { 2809b35249446b07f40ac5fcc3205f2c048616efacchkuang if (!__msan_has_dynamic_component()) return; 2819b35249446b07f40ac5fcc3205f2c048616efacchkuang ReturnPoisoned<S1>(); 2829b35249446b07f40ac5fcc3205f2c048616efacchkuang ReturnPoisoned<S2>(); 2839b35249446b07f40ac5fcc3205f2c048616efacchkuang ReturnPoisoned<S4>(); 2849b35249446b07f40ac5fcc3205f2c048616efacchkuang ReturnPoisoned<S8>(); 2859b35249446b07f40ac5fcc3205f2c048616efacchkuang 2869b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(ReturnPoisoned<S1>()); 2879b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(ReturnPoisoned<S2>()); 2889b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(ReturnPoisoned<S4>()); 2899b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(ReturnPoisoned<S8>()); 2909b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2919b35249446b07f40ac5fcc3205f2c048616efacchkuang 2929b35249446b07f40ac5fcc3205f2c048616efacchkuang// malloc() in the following test may be optimized to produce a compile-time 2939b35249446b07f40ac5fcc3205f2c048616efacchkuang// undef value. Check that we trap on the volatile assignment anyway. 2949b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, DISABLED_MallocNoIdent) { 2959b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 *x = (int*)malloc(sizeof(S4)); 2969b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*x); 2979b35249446b07f40ac5fcc3205f2c048616efacchkuang free(x); 2989b35249446b07f40ac5fcc3205f2c048616efacchkuang} 2999b35249446b07f40ac5fcc3205f2c048616efacchkuang 3009b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, Malloc) { 3019b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 *x = (int*)Ident(malloc(sizeof(S4))); 3029b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*x); 3039b35249446b07f40ac5fcc3205f2c048616efacchkuang free(x); 3049b35249446b07f40ac5fcc3205f2c048616efacchkuang} 3059b35249446b07f40ac5fcc3205f2c048616efacchkuang 3069b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, Realloc) { 3079b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 *x = (int*)Ident(realloc(0, sizeof(S4))); 3089b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[0]); 3099b35249446b07f40ac5fcc3205f2c048616efacchkuang x[0] = 1; 3109b35249446b07f40ac5fcc3205f2c048616efacchkuang x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 3119b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 3129b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[1]); 3139b35249446b07f40ac5fcc3205f2c048616efacchkuang x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 3149b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 3159b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[2]); 3169b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[1]); 3179b35249446b07f40ac5fcc3205f2c048616efacchkuang x[2] = 1; // Init this here. Check that after realloc it is poisoned again. 3189b35249446b07f40ac5fcc3205f2c048616efacchkuang x = (int*)Ident(realloc(x, 2 * sizeof(S4))); 3199b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. 3209b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[1]); 3219b35249446b07f40ac5fcc3205f2c048616efacchkuang x = (int*)Ident(realloc(x, 3 * sizeof(S4))); 3229b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[1]); 3239b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(x[2]); 3249b35249446b07f40ac5fcc3205f2c048616efacchkuang free(x); 3259b35249446b07f40ac5fcc3205f2c048616efacchkuang} 3269b35249446b07f40ac5fcc3205f2c048616efacchkuang 3279b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, Calloc) { 3289b35249446b07f40ac5fcc3205f2c048616efacchkuang S4 *x = (int*)Ident(calloc(1, sizeof(S4))); 3299b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*x); // Should not be poisoned. 3309b35249446b07f40ac5fcc3205f2c048616efacchkuang // EXPECT_EQ(0, *x); 3319b35249446b07f40ac5fcc3205f2c048616efacchkuang free(x); 3329b35249446b07f40ac5fcc3205f2c048616efacchkuang} 3339b35249446b07f40ac5fcc3205f2c048616efacchkuang 3349b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, AndOr) { 3359b35249446b07f40ac5fcc3205f2c048616efacchkuang U4 *p = GetPoisoned<U4>(); 3369b35249446b07f40ac5fcc3205f2c048616efacchkuang // We poison two bytes in the midle of a 4-byte word to make the test 3379b35249446b07f40ac5fcc3205f2c048616efacchkuang // correct regardless of endianness. 3389b35249446b07f40ac5fcc3205f2c048616efacchkuang ((U1*)p)[1] = 0; 3399b35249446b07f40ac5fcc3205f2c048616efacchkuang ((U1*)p)[2] = 0xff; 3409b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*p & 0x00ffff00); 3419b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*p & 0x00ff0000); 3429b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*p & 0x0000ff00); 3439b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p & 0xff000000); 3449b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p & 0x000000ff); 3459b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p & 0x0000ffff); 3469b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p & 0xffff0000); 3479b35249446b07f40ac5fcc3205f2c048616efacchkuang 3489b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*p | 0xff0000ff); 3499b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*p | 0xff00ffff); 3509b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(*p | 0xffff00ff); 3519b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p | 0xff000000); 3529b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p | 0x000000ff); 3539b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p | 0x0000ffff); 3549b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*p | 0xffff0000); 3559b35249446b07f40ac5fcc3205f2c048616efacchkuang 3569b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); 3579b35249446b07f40ac5fcc3205f2c048616efacchkuang} 3589b35249446b07f40ac5fcc3205f2c048616efacchkuang 3599b35249446b07f40ac5fcc3205f2c048616efacchkuangtemplate<class T> 3609b35249446b07f40ac5fcc3205f2c048616efacchkuangstatic bool applyNot(T value, T shadow) { 3619b35249446b07f40ac5fcc3205f2c048616efacchkuang __msan_partial_poison(&value, &shadow, sizeof(T)); 3629b35249446b07f40ac5fcc3205f2c048616efacchkuang return !value; 3639b35249446b07f40ac5fcc3205f2c048616efacchkuang} 3649b35249446b07f40ac5fcc3205f2c048616efacchkuang 3659b35249446b07f40ac5fcc3205f2c048616efacchkuangTEST(MemorySanitizer, Not) { 3669b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); 3679b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); 3689b35249446b07f40ac5fcc3205f2c048616efacchkuang EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); 369b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); 370b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); 371b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); 372b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); 3739b35249446b07f40ac5fcc3205f2c048616efacchkuang 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, sincos) { 1510 double s, c; 1511 sincos(0.2, &s, &c); 1512 EXPECT_NOT_POISONED(s); 1513 EXPECT_NOT_POISONED(c); 1514} 1515 1516TEST(MemorySanitizer, sincosf) { 1517 float s, c; 1518 sincosf(0.2, &s, &c); 1519 EXPECT_NOT_POISONED(s); 1520 EXPECT_NOT_POISONED(c); 1521} 1522 1523TEST(MemorySanitizer, sincosl) { 1524 long double s, c; 1525 sincosl(0.2, &s, &c); 1526 EXPECT_NOT_POISONED(s); 1527 EXPECT_NOT_POISONED(c); 1528} 1529 1530TEST(MemorySanitizer, remquo) { 1531 int quo; 1532 double res = remquo(29.0, 3.0, &quo); 1533 ASSERT_NE(0.0, res); 1534 EXPECT_NOT_POISONED(quo); 1535} 1536 1537TEST(MemorySanitizer, remquof) { 1538 int quo; 1539 float res = remquof(29.0, 3.0, &quo); 1540 ASSERT_NE(0.0, res); 1541 EXPECT_NOT_POISONED(quo); 1542} 1543 1544TEST(MemorySanitizer, remquol) { 1545 int quo; 1546 long double res = remquof(29.0, 3.0, &quo); 1547 ASSERT_NE(0.0, res); 1548 EXPECT_NOT_POISONED(quo); 1549} 1550 1551TEST(MemorySanitizer, lgamma) { 1552 double res = lgamma(1.1); 1553 ASSERT_NE(0.0, res); 1554 EXPECT_NOT_POISONED(signgam); 1555} 1556 1557TEST(MemorySanitizer, lgammaf) { 1558 float res = lgammaf(1.1); 1559 ASSERT_NE(0.0, res); 1560 EXPECT_NOT_POISONED(signgam); 1561} 1562 1563TEST(MemorySanitizer, lgammal) { 1564 long double res = lgammal(1.1); 1565 ASSERT_NE(0.0, res); 1566 EXPECT_NOT_POISONED(signgam); 1567} 1568 1569TEST(MemorySanitizer, lgamma_r) { 1570 int sgn; 1571 double res = lgamma_r(1.1, &sgn); 1572 ASSERT_NE(0.0, res); 1573 EXPECT_NOT_POISONED(sgn); 1574} 1575 1576TEST(MemorySanitizer, lgammaf_r) { 1577 int sgn; 1578 float res = lgammaf_r(1.1, &sgn); 1579 ASSERT_NE(0.0, res); 1580 EXPECT_NOT_POISONED(sgn); 1581} 1582 1583TEST(MemorySanitizer, lgammal_r) { 1584 int sgn; 1585 long double res = lgammal_r(1.1, &sgn); 1586 ASSERT_NE(0.0, res); 1587 EXPECT_NOT_POISONED(sgn); 1588} 1589 1590TEST(MemorySanitizer, drand48_r) { 1591 struct drand48_data buf; 1592 srand48_r(0, &buf); 1593 double d; 1594 drand48_r(&buf, &d); 1595 EXPECT_NOT_POISONED(d); 1596} 1597 1598TEST(MemorySanitizer, lrand48_r) { 1599 struct drand48_data buf; 1600 srand48_r(0, &buf); 1601 long d; 1602 lrand48_r(&buf, &d); 1603 EXPECT_NOT_POISONED(d); 1604} 1605 1606TEST(MemorySanitizer, sprintf) { // NOLINT 1607 char buff[10]; 1608 break_optimization(buff); 1609 EXPECT_POISONED(buff[0]); 1610 int res = sprintf(buff, "%d", 1234567); // NOLINT 1611 assert(res == 7); 1612 assert(buff[0] == '1'); 1613 assert(buff[1] == '2'); 1614 assert(buff[2] == '3'); 1615 assert(buff[6] == '7'); 1616 assert(buff[7] == 0); 1617 EXPECT_POISONED(buff[8]); 1618} 1619 1620TEST(MemorySanitizer, snprintf) { 1621 char buff[10]; 1622 break_optimization(buff); 1623 EXPECT_POISONED(buff[0]); 1624 int res = snprintf(buff, sizeof(buff), "%d", 1234567); 1625 assert(res == 7); 1626 assert(buff[0] == '1'); 1627 assert(buff[1] == '2'); 1628 assert(buff[2] == '3'); 1629 assert(buff[6] == '7'); 1630 assert(buff[7] == 0); 1631 EXPECT_POISONED(buff[8]); 1632} 1633 1634TEST(MemorySanitizer, swprintf) { 1635 wchar_t buff[10]; 1636 assert(sizeof(wchar_t) == 4); 1637 break_optimization(buff); 1638 EXPECT_POISONED(buff[0]); 1639 int res = swprintf(buff, 9, L"%d", 1234567); 1640 assert(res == 7); 1641 assert(buff[0] == '1'); 1642 assert(buff[1] == '2'); 1643 assert(buff[2] == '3'); 1644 assert(buff[6] == '7'); 1645 assert(buff[7] == 0); 1646 EXPECT_POISONED(buff[8]); 1647} 1648 1649TEST(MemorySanitizer, asprintf) { // NOLINT 1650 char *pbuf; 1651 EXPECT_POISONED(pbuf); 1652 int res = asprintf(&pbuf, "%d", 1234567); // NOLINT 1653 assert(res == 7); 1654 EXPECT_NOT_POISONED(pbuf); 1655 assert(pbuf[0] == '1'); 1656 assert(pbuf[1] == '2'); 1657 assert(pbuf[2] == '3'); 1658 assert(pbuf[6] == '7'); 1659 assert(pbuf[7] == 0); 1660 free(pbuf); 1661} 1662 1663TEST(MemorySanitizer, mbstowcs) { 1664 const char *x = "abc"; 1665 wchar_t buff[10]; 1666 int res = mbstowcs(buff, x, 2); 1667 EXPECT_EQ(2, res); 1668 EXPECT_EQ(L'a', buff[0]); 1669 EXPECT_EQ(L'b', buff[1]); 1670 EXPECT_POISONED(buff[2]); 1671 res = mbstowcs(buff, x, 10); 1672 EXPECT_EQ(3, res); 1673 EXPECT_NOT_POISONED(buff[3]); 1674} 1675 1676TEST(MemorySanitizer, wcstombs) { 1677 const wchar_t *x = L"abc"; 1678 char buff[10]; 1679 int res = wcstombs(buff, x, 4); 1680 EXPECT_EQ(res, 3); 1681 EXPECT_EQ(buff[0], 'a'); 1682 EXPECT_EQ(buff[1], 'b'); 1683 EXPECT_EQ(buff[2], 'c'); 1684} 1685 1686TEST(MemorySanitizer, wcsrtombs) { 1687 const wchar_t *x = L"abc"; 1688 const wchar_t *p = x; 1689 char buff[10]; 1690 mbstate_t mbs; 1691 memset(&mbs, 0, sizeof(mbs)); 1692 int res = wcsrtombs(buff, &p, 4, &mbs); 1693 EXPECT_EQ(res, 3); 1694 EXPECT_EQ(buff[0], 'a'); 1695 EXPECT_EQ(buff[1], 'b'); 1696 EXPECT_EQ(buff[2], 'c'); 1697 EXPECT_EQ(buff[3], '\0'); 1698 EXPECT_POISONED(buff[4]); 1699} 1700 1701TEST(MemorySanitizer, wcsnrtombs) { 1702 const wchar_t *x = L"abc"; 1703 const wchar_t *p = x; 1704 char buff[10]; 1705 mbstate_t mbs; 1706 memset(&mbs, 0, sizeof(mbs)); 1707 int res = wcsnrtombs(buff, &p, 2, 4, &mbs); 1708 EXPECT_EQ(res, 2); 1709 EXPECT_EQ(buff[0], 'a'); 1710 EXPECT_EQ(buff[1], 'b'); 1711 EXPECT_POISONED(buff[2]); 1712} 1713 1714TEST(MemorySanitizer, mbtowc) { 1715 const char *x = "abc"; 1716 wchar_t wx; 1717 int res = mbtowc(&wx, x, 3); 1718 EXPECT_GT(res, 0); 1719 EXPECT_NOT_POISONED(wx); 1720} 1721 1722TEST(MemorySanitizer, mbrtowc) { 1723 const char *x = "abc"; 1724 wchar_t wx; 1725 mbstate_t mbs; 1726 memset(&mbs, 0, sizeof(mbs)); 1727 int res = mbrtowc(&wx, x, 3, &mbs); 1728 EXPECT_GT(res, 0); 1729 EXPECT_NOT_POISONED(wx); 1730} 1731 1732TEST(MemorySanitizer, gettimeofday) { 1733 struct timeval tv; 1734 struct timezone tz; 1735 break_optimization(&tv); 1736 break_optimization(&tz); 1737 assert(sizeof(tv) == 16); 1738 assert(sizeof(tz) == 8); 1739 EXPECT_POISONED(tv.tv_sec); 1740 EXPECT_POISONED(tv.tv_usec); 1741 EXPECT_POISONED(tz.tz_minuteswest); 1742 EXPECT_POISONED(tz.tz_dsttime); 1743 assert(0 == gettimeofday(&tv, &tz)); 1744 EXPECT_NOT_POISONED(tv.tv_sec); 1745 EXPECT_NOT_POISONED(tv.tv_usec); 1746 EXPECT_NOT_POISONED(tz.tz_minuteswest); 1747 EXPECT_NOT_POISONED(tz.tz_dsttime); 1748} 1749 1750TEST(MemorySanitizer, clock_gettime) { 1751 struct timespec tp; 1752 EXPECT_POISONED(tp.tv_sec); 1753 EXPECT_POISONED(tp.tv_nsec); 1754 assert(0 == clock_gettime(CLOCK_REALTIME, &tp)); 1755 EXPECT_NOT_POISONED(tp.tv_sec); 1756 EXPECT_NOT_POISONED(tp.tv_nsec); 1757} 1758 1759TEST(MemorySanitizer, clock_getres) { 1760 struct timespec tp; 1761 EXPECT_POISONED(tp.tv_sec); 1762 EXPECT_POISONED(tp.tv_nsec); 1763 assert(0 == clock_getres(CLOCK_REALTIME, 0)); 1764 EXPECT_POISONED(tp.tv_sec); 1765 EXPECT_POISONED(tp.tv_nsec); 1766 assert(0 == clock_getres(CLOCK_REALTIME, &tp)); 1767 EXPECT_NOT_POISONED(tp.tv_sec); 1768 EXPECT_NOT_POISONED(tp.tv_nsec); 1769} 1770 1771TEST(MemorySanitizer, getitimer) { 1772 struct itimerval it1, it2; 1773 int res; 1774 EXPECT_POISONED(it1.it_interval.tv_sec); 1775 EXPECT_POISONED(it1.it_interval.tv_usec); 1776 EXPECT_POISONED(it1.it_value.tv_sec); 1777 EXPECT_POISONED(it1.it_value.tv_usec); 1778 res = getitimer(ITIMER_VIRTUAL, &it1); 1779 assert(!res); 1780 EXPECT_NOT_POISONED(it1.it_interval.tv_sec); 1781 EXPECT_NOT_POISONED(it1.it_interval.tv_usec); 1782 EXPECT_NOT_POISONED(it1.it_value.tv_sec); 1783 EXPECT_NOT_POISONED(it1.it_value.tv_usec); 1784 1785 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; 1786 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; 1787 1788 res = setitimer(ITIMER_VIRTUAL, &it1, &it2); 1789 assert(!res); 1790 EXPECT_NOT_POISONED(it2.it_interval.tv_sec); 1791 EXPECT_NOT_POISONED(it2.it_interval.tv_usec); 1792 EXPECT_NOT_POISONED(it2.it_value.tv_sec); 1793 EXPECT_NOT_POISONED(it2.it_value.tv_usec); 1794 1795 // Check that old_value can be 0, and disable the timer. 1796 memset(&it1, 0, sizeof(it1)); 1797 res = setitimer(ITIMER_VIRTUAL, &it1, 0); 1798 assert(!res); 1799} 1800 1801TEST(MemorySanitizer, setitimer_null) { 1802 setitimer(ITIMER_VIRTUAL, 0, 0); 1803 // Not testing the return value, since it the behaviour seems to differ 1804 // between libc implementations and POSIX. 1805 // Should never crash, though. 1806} 1807 1808TEST(MemorySanitizer, time) { 1809 time_t t; 1810 EXPECT_POISONED(t); 1811 time_t t2 = time(&t); 1812 assert(t2 != (time_t)-1); 1813 EXPECT_NOT_POISONED(t); 1814} 1815 1816TEST(MemorySanitizer, localtime) { 1817 time_t t = 123; 1818 struct tm *time = localtime(&t); 1819 assert(time != 0); 1820 EXPECT_NOT_POISONED(time->tm_sec); 1821 EXPECT_NOT_POISONED(time->tm_hour); 1822 EXPECT_NOT_POISONED(time->tm_year); 1823 EXPECT_NOT_POISONED(time->tm_isdst); 1824 EXPECT_NE(0, strlen(time->tm_zone)); 1825} 1826 1827TEST(MemorySanitizer, localtime_r) { 1828 time_t t = 123; 1829 struct tm time; 1830 struct tm *res = localtime_r(&t, &time); 1831 assert(res != 0); 1832 EXPECT_NOT_POISONED(time.tm_sec); 1833 EXPECT_NOT_POISONED(time.tm_hour); 1834 EXPECT_NOT_POISONED(time.tm_year); 1835 EXPECT_NOT_POISONED(time.tm_isdst); 1836 EXPECT_NE(0, strlen(time.tm_zone)); 1837} 1838 1839TEST(MemorySanitizer, getmntent) { 1840 FILE *fp = setmntent("/etc/fstab", "r"); 1841 struct mntent *mnt = getmntent(fp); 1842 ASSERT_NE((void *)0, mnt); 1843 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1844 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1845 ASSERT_NE(0, strlen(mnt->mnt_type)); 1846 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1847 EXPECT_NOT_POISONED(mnt->mnt_freq); 1848 EXPECT_NOT_POISONED(mnt->mnt_passno); 1849 fclose(fp); 1850} 1851 1852TEST(MemorySanitizer, getmntent_r) { 1853 FILE *fp = setmntent("/etc/fstab", "r"); 1854 struct mntent mntbuf; 1855 char buf[1000]; 1856 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); 1857 ASSERT_NE((void *)0, mnt); 1858 ASSERT_NE(0, strlen(mnt->mnt_fsname)); 1859 ASSERT_NE(0, strlen(mnt->mnt_dir)); 1860 ASSERT_NE(0, strlen(mnt->mnt_type)); 1861 ASSERT_NE(0, strlen(mnt->mnt_opts)); 1862 EXPECT_NOT_POISONED(mnt->mnt_freq); 1863 EXPECT_NOT_POISONED(mnt->mnt_passno); 1864 fclose(fp); 1865} 1866 1867TEST(MemorySanitizer, ether) { 1868 const char *asc = "11:22:33:44:55:66"; 1869 struct ether_addr *paddr = ether_aton(asc); 1870 EXPECT_NOT_POISONED(*paddr); 1871 1872 struct ether_addr addr; 1873 paddr = ether_aton_r(asc, &addr); 1874 ASSERT_EQ(paddr, &addr); 1875 EXPECT_NOT_POISONED(addr); 1876 1877 char *s = ether_ntoa(&addr); 1878 ASSERT_NE(0, strlen(s)); 1879 1880 char buf[100]; 1881 s = ether_ntoa_r(&addr, buf); 1882 ASSERT_EQ(s, buf); 1883 ASSERT_NE(0, strlen(buf)); 1884} 1885 1886TEST(MemorySanitizer, mmap) { 1887 const int size = 4096; 1888 void *p1, *p2; 1889 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1890 __msan_poison(p1, size); 1891 munmap(p1, size); 1892 for (int i = 0; i < 1000; i++) { 1893 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1894 if (p2 == p1) 1895 break; 1896 else 1897 munmap(p2, size); 1898 } 1899 if (p1 == p2) { 1900 EXPECT_NOT_POISONED(*(char*)p2); 1901 munmap(p2, size); 1902 } 1903} 1904 1905// FIXME: enable and add ecvt. 1906// FIXME: check why msandr does nt handle fcvt. 1907TEST(MemorySanitizer, fcvt) { 1908 int a, b; 1909 break_optimization(&a); 1910 break_optimization(&b); 1911 EXPECT_POISONED(a); 1912 EXPECT_POISONED(b); 1913 char *str = fcvt(12345.6789, 10, &a, &b); 1914 EXPECT_NOT_POISONED(a); 1915 EXPECT_NOT_POISONED(b); 1916} 1917 1918TEST(MemorySanitizer, frexp) { 1919 int x; 1920 x = *GetPoisoned<int>(); 1921 double r = frexp(1.1, &x); 1922 EXPECT_NOT_POISONED(r); 1923 EXPECT_NOT_POISONED(x); 1924 1925 x = *GetPoisoned<int>(); 1926 float rf = frexpf(1.1, &x); 1927 EXPECT_NOT_POISONED(rf); 1928 EXPECT_NOT_POISONED(x); 1929 1930 x = *GetPoisoned<int>(); 1931 double rl = frexpl(1.1, &x); 1932 EXPECT_NOT_POISONED(rl); 1933 EXPECT_NOT_POISONED(x); 1934} 1935 1936namespace { 1937 1938static int cnt; 1939 1940void SigactionHandler(int signo, siginfo_t* si, void* uc) { 1941 assert(signo == SIGPROF); 1942 assert(si); 1943 EXPECT_NOT_POISONED(si->si_errno); 1944 EXPECT_NOT_POISONED(si->si_pid); 1945#if __linux__ 1946# if defined(__x86_64__) 1947 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); 1948# elif defined(__i386__) 1949 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); 1950# endif 1951#endif 1952 ++cnt; 1953} 1954 1955TEST(MemorySanitizer, sigaction) { 1956 struct sigaction act = {}; 1957 struct sigaction oldact = {}; 1958 struct sigaction origact = {}; 1959 1960 sigaction(SIGPROF, 0, &origact); 1961 1962 act.sa_flags |= SA_SIGINFO; 1963 act.sa_sigaction = &SigactionHandler; 1964 sigaction(SIGPROF, &act, 0); 1965 1966 kill(getpid(), SIGPROF); 1967 1968 act.sa_flags &= ~SA_SIGINFO; 1969 act.sa_handler = SIG_DFL; 1970 sigaction(SIGPROF, &act, 0); 1971 1972 act.sa_flags &= ~SA_SIGINFO; 1973 act.sa_handler = SIG_IGN; 1974 sigaction(SIGPROF, &act, &oldact); 1975 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1976 EXPECT_EQ(SIG_DFL, oldact.sa_handler); 1977 kill(getpid(), SIGPROF); 1978 1979 act.sa_flags |= SA_SIGINFO; 1980 act.sa_sigaction = &SigactionHandler; 1981 sigaction(SIGPROF, &act, &oldact); 1982 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); 1983 EXPECT_EQ(SIG_IGN, oldact.sa_handler); 1984 kill(getpid(), SIGPROF); 1985 1986 act.sa_flags &= ~SA_SIGINFO; 1987 act.sa_handler = SIG_DFL; 1988 sigaction(SIGPROF, &act, &oldact); 1989 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); 1990 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); 1991 EXPECT_EQ(2, cnt); 1992 1993 sigaction(SIGPROF, &origact, 0); 1994} 1995 1996} // namespace 1997 1998 1999TEST(MemorySanitizer, sigemptyset) { 2000 sigset_t s; 2001 EXPECT_POISONED(s); 2002 int res = sigemptyset(&s); 2003 ASSERT_EQ(0, res); 2004 EXPECT_NOT_POISONED(s); 2005} 2006 2007TEST(MemorySanitizer, sigfillset) { 2008 sigset_t s; 2009 EXPECT_POISONED(s); 2010 int res = sigfillset(&s); 2011 ASSERT_EQ(0, res); 2012 EXPECT_NOT_POISONED(s); 2013} 2014 2015TEST(MemorySanitizer, sigpending) { 2016 sigset_t s; 2017 EXPECT_POISONED(s); 2018 int res = sigpending(&s); 2019 ASSERT_EQ(0, res); 2020 EXPECT_NOT_POISONED(s); 2021} 2022 2023TEST(MemorySanitizer, sigprocmask) { 2024 sigset_t s; 2025 EXPECT_POISONED(s); 2026 int res = sigprocmask(SIG_BLOCK, 0, &s); 2027 ASSERT_EQ(0, res); 2028 EXPECT_NOT_POISONED(s); 2029} 2030 2031struct StructWithDtor { 2032 ~StructWithDtor(); 2033}; 2034 2035NOINLINE StructWithDtor::~StructWithDtor() { 2036 break_optimization(0); 2037} 2038 2039TEST(MemorySanitizer, Invoke) { 2040 StructWithDtor s; // Will cause the calls to become invokes. 2041 EXPECT_NOT_POISONED(0); 2042 EXPECT_POISONED(*GetPoisoned<int>()); 2043 EXPECT_NOT_POISONED(0); 2044 EXPECT_POISONED(*GetPoisoned<int>()); 2045 EXPECT_POISONED(ReturnPoisoned<S4>()); 2046} 2047 2048TEST(MemorySanitizer, ptrtoint) { 2049 // Test that shadow is propagated through pointer-to-integer conversion. 2050 void* p = (void*)0xABCD; 2051 __msan_poison(((char*)&p) + 1, sizeof(p)); 2052 EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0); 2053 2054 void* q = (void*)0xABCD; 2055 __msan_poison(&q, sizeof(q) - 1); 2056 EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0); 2057} 2058 2059static void vaargsfn2(int guard, ...) { 2060 va_list vl; 2061 va_start(vl, guard); 2062 EXPECT_NOT_POISONED(va_arg(vl, int)); 2063 EXPECT_NOT_POISONED(va_arg(vl, int)); 2064 EXPECT_NOT_POISONED(va_arg(vl, int)); 2065 EXPECT_POISONED(va_arg(vl, double)); 2066 va_end(vl); 2067} 2068 2069static void vaargsfn(int guard, ...) { 2070 va_list vl; 2071 va_start(vl, guard); 2072 EXPECT_NOT_POISONED(va_arg(vl, int)); 2073 EXPECT_POISONED(va_arg(vl, int)); 2074 // The following call will overwrite __msan_param_tls. 2075 // Checks after it test that arg shadow was somehow saved across the call. 2076 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); 2077 EXPECT_NOT_POISONED(va_arg(vl, int)); 2078 EXPECT_POISONED(va_arg(vl, int)); 2079 va_end(vl); 2080} 2081 2082TEST(MemorySanitizer, VAArgTest) { 2083 int* x = GetPoisoned<int>(); 2084 int* y = GetPoisoned<int>(4); 2085 vaargsfn(1, 13, *x, 42, *y); 2086} 2087 2088static void vaargsfn_many(int guard, ...) { 2089 va_list vl; 2090 va_start(vl, guard); 2091 EXPECT_NOT_POISONED(va_arg(vl, int)); 2092 EXPECT_POISONED(va_arg(vl, int)); 2093 EXPECT_NOT_POISONED(va_arg(vl, int)); 2094 EXPECT_NOT_POISONED(va_arg(vl, int)); 2095 EXPECT_NOT_POISONED(va_arg(vl, int)); 2096 EXPECT_NOT_POISONED(va_arg(vl, int)); 2097 EXPECT_NOT_POISONED(va_arg(vl, int)); 2098 EXPECT_NOT_POISONED(va_arg(vl, int)); 2099 EXPECT_NOT_POISONED(va_arg(vl, int)); 2100 EXPECT_POISONED(va_arg(vl, int)); 2101 va_end(vl); 2102} 2103 2104TEST(MemorySanitizer, VAArgManyTest) { 2105 int* x = GetPoisoned<int>(); 2106 int* y = GetPoisoned<int>(4); 2107 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); 2108} 2109 2110static void vaargsfn_pass2(va_list vl) { 2111 EXPECT_NOT_POISONED(va_arg(vl, int)); 2112 EXPECT_NOT_POISONED(va_arg(vl, int)); 2113 EXPECT_POISONED(va_arg(vl, int)); 2114} 2115 2116static void vaargsfn_pass(int guard, ...) { 2117 va_list vl; 2118 va_start(vl, guard); 2119 EXPECT_POISONED(va_arg(vl, int)); 2120 vaargsfn_pass2(vl); 2121 va_end(vl); 2122} 2123 2124TEST(MemorySanitizer, VAArgPass) { 2125 int* x = GetPoisoned<int>(); 2126 int* y = GetPoisoned<int>(4); 2127 vaargsfn_pass(1, *x, 2, 3, *y); 2128} 2129 2130static void vaargsfn_copy2(va_list vl) { 2131 EXPECT_NOT_POISONED(va_arg(vl, int)); 2132 EXPECT_POISONED(va_arg(vl, int)); 2133} 2134 2135static void vaargsfn_copy(int guard, ...) { 2136 va_list vl; 2137 va_start(vl, guard); 2138 EXPECT_NOT_POISONED(va_arg(vl, int)); 2139 EXPECT_POISONED(va_arg(vl, int)); 2140 va_list vl2; 2141 va_copy(vl2, vl); 2142 vaargsfn_copy2(vl2); 2143 EXPECT_NOT_POISONED(va_arg(vl, int)); 2144 EXPECT_POISONED(va_arg(vl, int)); 2145 va_end(vl); 2146} 2147 2148TEST(MemorySanitizer, VAArgCopy) { 2149 int* x = GetPoisoned<int>(); 2150 int* y = GetPoisoned<int>(4); 2151 vaargsfn_copy(1, 2, *x, 3, *y); 2152} 2153 2154static void vaargsfn_ptr(int guard, ...) { 2155 va_list vl; 2156 va_start(vl, guard); 2157 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2158 EXPECT_POISONED(va_arg(vl, int*)); 2159 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2160 EXPECT_POISONED(va_arg(vl, double*)); 2161 va_end(vl); 2162} 2163 2164TEST(MemorySanitizer, VAArgPtr) { 2165 int** x = GetPoisoned<int*>(); 2166 double** y = GetPoisoned<double*>(8); 2167 int z; 2168 vaargsfn_ptr(1, &z, *x, &z, *y); 2169} 2170 2171static void vaargsfn_overflow(int guard, ...) { 2172 va_list vl; 2173 va_start(vl, guard); 2174 EXPECT_NOT_POISONED(va_arg(vl, int)); 2175 EXPECT_NOT_POISONED(va_arg(vl, int)); 2176 EXPECT_POISONED(va_arg(vl, int)); 2177 EXPECT_NOT_POISONED(va_arg(vl, int)); 2178 EXPECT_NOT_POISONED(va_arg(vl, int)); 2179 EXPECT_NOT_POISONED(va_arg(vl, int)); 2180 2181 EXPECT_NOT_POISONED(va_arg(vl, double)); 2182 EXPECT_NOT_POISONED(va_arg(vl, double)); 2183 EXPECT_NOT_POISONED(va_arg(vl, double)); 2184 EXPECT_POISONED(va_arg(vl, double)); 2185 EXPECT_NOT_POISONED(va_arg(vl, double)); 2186 EXPECT_POISONED(va_arg(vl, int*)); 2187 EXPECT_NOT_POISONED(va_arg(vl, double)); 2188 EXPECT_NOT_POISONED(va_arg(vl, double)); 2189 2190 EXPECT_POISONED(va_arg(vl, int)); 2191 EXPECT_POISONED(va_arg(vl, double)); 2192 EXPECT_POISONED(va_arg(vl, int*)); 2193 2194 EXPECT_NOT_POISONED(va_arg(vl, int)); 2195 EXPECT_NOT_POISONED(va_arg(vl, double)); 2196 EXPECT_NOT_POISONED(va_arg(vl, int*)); 2197 2198 EXPECT_POISONED(va_arg(vl, int)); 2199 EXPECT_POISONED(va_arg(vl, double)); 2200 EXPECT_POISONED(va_arg(vl, int*)); 2201 2202 va_end(vl); 2203} 2204 2205TEST(MemorySanitizer, VAArgOverflow) { 2206 int* x = GetPoisoned<int>(); 2207 double* y = GetPoisoned<double>(8); 2208 int** p = GetPoisoned<int*>(16); 2209 int z; 2210 vaargsfn_overflow(1, 2211 1, 2, *x, 4, 5, 6, 2212 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, 2213 // the following args will overflow for sure 2214 *x, *y, *p, 2215 7, 9.9, &z, 2216 *x, *y, *p); 2217} 2218 2219static void vaargsfn_tlsoverwrite2(int guard, ...) { 2220 va_list vl; 2221 va_start(vl, guard); 2222 for (int i = 0; i < 20; ++i) 2223 EXPECT_NOT_POISONED(va_arg(vl, int)); 2224 va_end(vl); 2225} 2226 2227static void vaargsfn_tlsoverwrite(int guard, ...) { 2228 // This call will overwrite TLS contents unless it's backed up somewhere. 2229 vaargsfn_tlsoverwrite2(2, 2230 42, 42, 42, 42, 42, 2231 42, 42, 42, 42, 42, 2232 42, 42, 42, 42, 42, 2233 42, 42, 42, 42, 42); // 20x 2234 va_list vl; 2235 va_start(vl, guard); 2236 for (int i = 0; i < 20; ++i) 2237 EXPECT_POISONED(va_arg(vl, int)); 2238 va_end(vl); 2239} 2240 2241TEST(MemorySanitizer, VAArgTLSOverwrite) { 2242 int* x = GetPoisoned<int>(); 2243 vaargsfn_tlsoverwrite(1, 2244 *x, *x, *x, *x, *x, 2245 *x, *x, *x, *x, *x, 2246 *x, *x, *x, *x, *x, 2247 *x, *x, *x, *x, *x); // 20x 2248 2249} 2250 2251struct StructByVal { 2252 int a, b, c, d, e, f; 2253}; 2254 2255NOINLINE void StructByValTestFunc(struct StructByVal s) { 2256 EXPECT_NOT_POISONED(s.a); 2257 EXPECT_POISONED(s.b); 2258 EXPECT_NOT_POISONED(s.c); 2259 EXPECT_POISONED(s.d); 2260 EXPECT_NOT_POISONED(s.e); 2261 EXPECT_POISONED(s.f); 2262} 2263 2264NOINLINE void StructByValTestFunc1(struct StructByVal s) { 2265 StructByValTestFunc(s); 2266} 2267 2268NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { 2269 StructByValTestFunc(s); 2270} 2271 2272TEST(MemorySanitizer, StructByVal) { 2273 // Large aggregates are passed as "byval" pointer argument in LLVM. 2274 struct StructByVal s; 2275 s.a = 1; 2276 s.b = *GetPoisoned<int>(); 2277 s.c = 2; 2278 s.d = *GetPoisoned<int>(); 2279 s.e = 3; 2280 s.f = *GetPoisoned<int>(); 2281 StructByValTestFunc(s); 2282 StructByValTestFunc1(s); 2283 StructByValTestFunc2(0, s); 2284} 2285 2286 2287#if MSAN_HAS_M128 2288NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } 2289NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } 2290TEST(MemorySanitizer, m128) { 2291 __m128i a = _mm_set1_epi16(0x1234); 2292 __m128i b = _mm_set1_epi16(0x7890); 2293 EXPECT_NOT_POISONED(m128Eq(&a, &b)); 2294 EXPECT_NOT_POISONED(m128Lt(&a, &b)); 2295} 2296// FIXME: add more tests for __m128i. 2297#endif // MSAN_HAS_M128 2298 2299// We should not complain when copying this poisoned hole. 2300struct StructWithHole { 2301 U4 a; 2302 // 4-byte hole. 2303 U8 b; 2304}; 2305 2306NOINLINE StructWithHole ReturnStructWithHole() { 2307 StructWithHole res; 2308 __msan_poison(&res, sizeof(res)); 2309 res.a = 1; 2310 res.b = 2; 2311 return res; 2312} 2313 2314TEST(MemorySanitizer, StructWithHole) { 2315 StructWithHole a = ReturnStructWithHole(); 2316 break_optimization(&a); 2317} 2318 2319template <class T> 2320NOINLINE T ReturnStruct() { 2321 T res; 2322 __msan_poison(&res, sizeof(res)); 2323 res.a = 1; 2324 return res; 2325} 2326 2327template <class T> 2328NOINLINE void TestReturnStruct() { 2329 T s1 = ReturnStruct<T>(); 2330 EXPECT_NOT_POISONED(s1.a); 2331 EXPECT_POISONED(s1.b); 2332} 2333 2334struct SSS1 { 2335 int a, b, c; 2336}; 2337struct SSS2 { 2338 int b, a, c; 2339}; 2340struct SSS3 { 2341 int b, c, a; 2342}; 2343struct SSS4 { 2344 int c, b, a; 2345}; 2346 2347struct SSS5 { 2348 int a; 2349 float b; 2350}; 2351struct SSS6 { 2352 int a; 2353 double b; 2354}; 2355struct SSS7 { 2356 S8 b; 2357 int a; 2358}; 2359struct SSS8 { 2360 S2 b; 2361 S8 a; 2362}; 2363 2364TEST(MemorySanitizer, IntStruct3) { 2365 TestReturnStruct<SSS1>(); 2366 TestReturnStruct<SSS2>(); 2367 TestReturnStruct<SSS3>(); 2368 TestReturnStruct<SSS4>(); 2369 TestReturnStruct<SSS5>(); 2370 TestReturnStruct<SSS6>(); 2371 TestReturnStruct<SSS7>(); 2372 TestReturnStruct<SSS8>(); 2373} 2374 2375struct LongStruct { 2376 U1 a1, b1; 2377 U2 a2, b2; 2378 U4 a4, b4; 2379 U8 a8, b8; 2380}; 2381 2382NOINLINE LongStruct ReturnLongStruct1() { 2383 LongStruct res; 2384 __msan_poison(&res, sizeof(res)); 2385 res.a1 = res.a2 = res.a4 = res.a8 = 111; 2386 // leaves b1, .., b8 poisoned. 2387 return res; 2388} 2389 2390NOINLINE LongStruct ReturnLongStruct2() { 2391 LongStruct res; 2392 __msan_poison(&res, sizeof(res)); 2393 res.b1 = res.b2 = res.b4 = res.b8 = 111; 2394 // leaves a1, .., a8 poisoned. 2395 return res; 2396} 2397 2398TEST(MemorySanitizer, LongStruct) { 2399 LongStruct s1 = ReturnLongStruct1(); 2400 __msan_print_shadow(&s1, sizeof(s1)); 2401 EXPECT_NOT_POISONED(s1.a1); 2402 EXPECT_NOT_POISONED(s1.a2); 2403 EXPECT_NOT_POISONED(s1.a4); 2404 EXPECT_NOT_POISONED(s1.a8); 2405 2406 EXPECT_POISONED(s1.b1); 2407 EXPECT_POISONED(s1.b2); 2408 EXPECT_POISONED(s1.b4); 2409 EXPECT_POISONED(s1.b8); 2410 2411 LongStruct s2 = ReturnLongStruct2(); 2412 __msan_print_shadow(&s2, sizeof(s2)); 2413 EXPECT_NOT_POISONED(s2.b1); 2414 EXPECT_NOT_POISONED(s2.b2); 2415 EXPECT_NOT_POISONED(s2.b4); 2416 EXPECT_NOT_POISONED(s2.b8); 2417 2418 EXPECT_POISONED(s2.a1); 2419 EXPECT_POISONED(s2.a2); 2420 EXPECT_POISONED(s2.a4); 2421 EXPECT_POISONED(s2.a8); 2422} 2423 2424TEST(MemorySanitizer, getrlimit) { 2425 struct rlimit limit; 2426 __msan_poison(&limit, sizeof(limit)); 2427 int result = getrlimit(RLIMIT_DATA, &limit); 2428 assert(result == 0); 2429 EXPECT_NOT_POISONED(limit.rlim_cur); 2430 EXPECT_NOT_POISONED(limit.rlim_max); 2431} 2432 2433TEST(MemorySanitizer, getrusage) { 2434 struct rusage usage; 2435 __msan_poison(&usage, sizeof(usage)); 2436 int result = getrusage(RUSAGE_SELF, &usage); 2437 assert(result == 0); 2438 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); 2439 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); 2440 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); 2441 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); 2442 EXPECT_NOT_POISONED(usage.ru_maxrss); 2443 EXPECT_NOT_POISONED(usage.ru_minflt); 2444 EXPECT_NOT_POISONED(usage.ru_majflt); 2445 EXPECT_NOT_POISONED(usage.ru_inblock); 2446 EXPECT_NOT_POISONED(usage.ru_oublock); 2447 EXPECT_NOT_POISONED(usage.ru_nvcsw); 2448 EXPECT_NOT_POISONED(usage.ru_nivcsw); 2449} 2450 2451#ifdef __GLIBC__ 2452extern char *program_invocation_name; 2453#else // __GLIBC__ 2454# error "TODO: port this" 2455#endif 2456 2457static void dladdr_testfn() {} 2458 2459TEST(MemorySanitizer, dladdr) { 2460 Dl_info info; 2461 __msan_poison(&info, sizeof(info)); 2462 int result = dladdr((const void*)dladdr_testfn, &info); 2463 assert(result != 0); 2464 EXPECT_NOT_POISONED((unsigned long)info.dli_fname); 2465 if (info.dli_fname) 2466 EXPECT_NOT_POISONED(strlen(info.dli_fname)); 2467 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); 2468 EXPECT_NOT_POISONED((unsigned long)info.dli_sname); 2469 if (info.dli_sname) 2470 EXPECT_NOT_POISONED(strlen(info.dli_sname)); 2471 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); 2472} 2473 2474#ifndef MSAN_TEST_DISABLE_DLOPEN 2475 2476static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { 2477 (*(int *)data)++; 2478 EXPECT_NOT_POISONED(info->dlpi_addr); 2479 EXPECT_NOT_POISONED(strlen(info->dlpi_name)); 2480 EXPECT_NOT_POISONED(info->dlpi_phnum); 2481 for (int i = 0; i < info->dlpi_phnum; ++i) 2482 EXPECT_NOT_POISONED(info->dlpi_phdr[i]); 2483 return 0; 2484} 2485 2486// Compute the path to our loadable DSO. We assume it's in the same 2487// directory. Only use string routines that we intercept so far to do this. 2488static int PathToLoadable(char *buf, size_t sz) { 2489 const char *basename = "libmsan_loadable.x86_64.so"; 2490 char *argv0 = program_invocation_name; 2491 char *last_slash = strrchr(argv0, '/'); 2492 assert(last_slash); 2493 int res = 2494 snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename); 2495 return res < sz ? 0 : res; 2496} 2497 2498TEST(MemorySanitizer, dl_iterate_phdr) { 2499 char path[4096]; 2500 int res = PathToLoadable(path, sizeof(path)); 2501 assert(!res); 2502 2503 // Having at least one dlopen'ed library in the process makes this more 2504 // entertaining. 2505 void *lib = dlopen(path, RTLD_LAZY); 2506 ASSERT_NE((void*)0, lib); 2507 2508 int count = 0; 2509 int result = dl_iterate_phdr(dl_phdr_callback, &count); 2510 assert(count > 0); 2511 2512 dlclose(lib); 2513} 2514 2515 2516TEST(MemorySanitizer, dlopen) { 2517 char path[4096]; 2518 int res = PathToLoadable(path, sizeof(path)); 2519 assert(!res); 2520 2521 // We need to clear shadow for globals when doing dlopen. In order to test 2522 // this, we have to poison the shadow for the DSO before we load it. In 2523 // general this is difficult, but the loader tends to reload things in the 2524 // same place, so we open, close, and then reopen. The global should always 2525 // start out clean after dlopen. 2526 for (int i = 0; i < 2; i++) { 2527 void *lib = dlopen(path, RTLD_LAZY); 2528 if (lib == NULL) { 2529 printf("dlerror: %s\n", dlerror()); 2530 assert(lib != NULL); 2531 } 2532 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); 2533 assert(get_dso_global); 2534 void **dso_global = get_dso_global(); 2535 EXPECT_NOT_POISONED(*dso_global); 2536 __msan_poison(dso_global, sizeof(*dso_global)); 2537 EXPECT_POISONED(*dso_global); 2538 dlclose(lib); 2539 } 2540} 2541 2542// Regression test for a crash in dlopen() interceptor. 2543TEST(MemorySanitizer, dlopenFailed) { 2544 const char *path = "/libmsan_loadable_does_not_exist.x86_64.so"; 2545 void *lib = dlopen(path, RTLD_LAZY); 2546 ASSERT_EQ(0, lib); 2547} 2548 2549#endif // MSAN_TEST_DISABLE_DLOPEN 2550 2551TEST(MemorySanitizer, sched_getaffinity) { 2552 cpu_set_t mask; 2553 int res = sched_getaffinity(getpid(), sizeof(mask), &mask); 2554 ASSERT_EQ(0, res); 2555 EXPECT_NOT_POISONED(mask); 2556} 2557 2558TEST(MemorySanitizer, scanf) { 2559 const char *input = "42 hello"; 2560 int* d = new int; 2561 char* s = new char[7]; 2562 int res = sscanf(input, "%d %5s", d, s); 2563 printf("res %d\n", res); 2564 assert(res == 2); 2565 EXPECT_NOT_POISONED(*d); 2566 EXPECT_NOT_POISONED(s[0]); 2567 EXPECT_NOT_POISONED(s[1]); 2568 EXPECT_NOT_POISONED(s[2]); 2569 EXPECT_NOT_POISONED(s[3]); 2570 EXPECT_NOT_POISONED(s[4]); 2571 EXPECT_NOT_POISONED(s[5]); 2572 EXPECT_POISONED(s[6]); 2573 delete s; 2574 delete d; 2575} 2576 2577static void *SimpleThread_threadfn(void* data) { 2578 return new int; 2579} 2580 2581TEST(MemorySanitizer, SimpleThread) { 2582 pthread_t t; 2583 void *p; 2584 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); 2585 assert(!res); 2586 EXPECT_NOT_POISONED(t); 2587 res = pthread_join(t, &p); 2588 assert(!res); 2589 EXPECT_NOT_POISONED(p); 2590 delete (int*)p; 2591} 2592 2593static void *SmallStackThread_threadfn(void* data) { 2594 return 0; 2595} 2596 2597TEST(MemorySanitizer, SmallStackThread) { 2598 pthread_attr_t attr; 2599 pthread_t t; 2600 void *p; 2601 int res; 2602 res = pthread_attr_init(&attr); 2603 ASSERT_EQ(0, res); 2604 res = pthread_attr_setstacksize(&attr, 64 * 1024); 2605 ASSERT_EQ(0, res); 2606 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2607 ASSERT_EQ(0, res); 2608 res = pthread_join(t, &p); 2609 ASSERT_EQ(0, res); 2610 res = pthread_attr_destroy(&attr); 2611 ASSERT_EQ(0, res); 2612} 2613 2614TEST(MemorySanitizer, PreAllocatedStackThread) { 2615 pthread_attr_t attr; 2616 pthread_t t; 2617 int res; 2618 res = pthread_attr_init(&attr); 2619 ASSERT_EQ(0, res); 2620 void *stack; 2621 const size_t kStackSize = 64 * 1024; 2622 res = posix_memalign(&stack, 4096, kStackSize); 2623 ASSERT_EQ(0, res); 2624 res = pthread_attr_setstack(&attr, stack, kStackSize); 2625 ASSERT_EQ(0, res); 2626 // A small self-allocated stack can not be extended by the tool. 2627 // In this case pthread_create is expected to fail. 2628 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); 2629 EXPECT_NE(0, res); 2630 res = pthread_attr_destroy(&attr); 2631 ASSERT_EQ(0, res); 2632} 2633 2634TEST(MemorySanitizer, pthread_attr_get) { 2635 pthread_attr_t attr; 2636 int res; 2637 res = pthread_attr_init(&attr); 2638 ASSERT_EQ(0, res); 2639 { 2640 int v; 2641 res = pthread_attr_getdetachstate(&attr, &v); 2642 ASSERT_EQ(0, res); 2643 EXPECT_NOT_POISONED(v); 2644 } 2645 { 2646 size_t v; 2647 res = pthread_attr_getguardsize(&attr, &v); 2648 ASSERT_EQ(0, res); 2649 EXPECT_NOT_POISONED(v); 2650 } 2651 { 2652 struct sched_param v; 2653 res = pthread_attr_getschedparam(&attr, &v); 2654 ASSERT_EQ(0, res); 2655 EXPECT_NOT_POISONED(v); 2656 } 2657 { 2658 int v; 2659 res = pthread_attr_getschedpolicy(&attr, &v); 2660 ASSERT_EQ(0, res); 2661 EXPECT_NOT_POISONED(v); 2662 } 2663 { 2664 int v; 2665 res = pthread_attr_getinheritsched(&attr, &v); 2666 ASSERT_EQ(0, res); 2667 EXPECT_NOT_POISONED(v); 2668 } 2669 { 2670 int v; 2671 res = pthread_attr_getscope(&attr, &v); 2672 ASSERT_EQ(0, res); 2673 EXPECT_NOT_POISONED(v); 2674 } 2675 { 2676 size_t v; 2677 res = pthread_attr_getstacksize(&attr, &v); 2678 ASSERT_EQ(0, res); 2679 EXPECT_NOT_POISONED(v); 2680 } 2681 { 2682 void *v; 2683 size_t w; 2684 res = pthread_attr_getstack(&attr, &v, &w); 2685 ASSERT_EQ(0, res); 2686 EXPECT_NOT_POISONED(v); 2687 EXPECT_NOT_POISONED(w); 2688 } 2689 { 2690 cpu_set_t v; 2691 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); 2692 ASSERT_EQ(0, res); 2693 EXPECT_NOT_POISONED(v); 2694 } 2695 res = pthread_attr_destroy(&attr); 2696 ASSERT_EQ(0, res); 2697} 2698 2699TEST(MemorySanitizer, pthread_getschedparam) { 2700 int policy; 2701 struct sched_param param; 2702 int res = pthread_getschedparam(pthread_self(), &policy, ¶m); 2703 ASSERT_EQ(0, res); 2704 EXPECT_NOT_POISONED(policy); 2705 EXPECT_NOT_POISONED(param.sched_priority); 2706} 2707 2708TEST(MemorySanitizer, pthread_key_create) { 2709 pthread_key_t key; 2710 int res = pthread_key_create(&key, NULL); 2711 assert(!res); 2712 EXPECT_NOT_POISONED(key); 2713 res = pthread_key_delete(key); 2714 assert(!res); 2715} 2716 2717namespace { 2718struct SignalCondArg { 2719 pthread_cond_t* cond; 2720 pthread_mutex_t* mu; 2721 bool broadcast; 2722}; 2723 2724void *SignalCond(void *param) { 2725 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); 2726 pthread_mutex_lock(arg->mu); 2727 if (arg->broadcast) 2728 pthread_cond_broadcast(arg->cond); 2729 else 2730 pthread_cond_signal(arg->cond); 2731 pthread_mutex_unlock(arg->mu); 2732 return 0; 2733} 2734} // namespace 2735 2736TEST(MemorySanitizer, pthread_cond_wait) { 2737 pthread_cond_t cond; 2738 pthread_mutex_t mu; 2739 SignalCondArg args = {&cond, &mu, false}; 2740 pthread_cond_init(&cond, 0); 2741 pthread_mutex_init(&mu, 0); 2742 pthread_mutex_lock(&mu); 2743 2744 // signal 2745 pthread_t thr; 2746 pthread_create(&thr, 0, SignalCond, &args); 2747 int res = pthread_cond_wait(&cond, &mu); 2748 assert(!res); 2749 pthread_join(thr, 0); 2750 2751 // broadcast 2752 args.broadcast = true; 2753 pthread_create(&thr, 0, SignalCond, &args); 2754 res = pthread_cond_wait(&cond, &mu); 2755 assert(!res); 2756 pthread_join(thr, 0); 2757 2758 pthread_mutex_unlock(&mu); 2759 pthread_mutex_destroy(&mu); 2760 pthread_cond_destroy(&cond); 2761} 2762 2763TEST(MemorySanitizer, tmpnam) { 2764 char s[L_tmpnam]; 2765 char *res = tmpnam(s); 2766 ASSERT_EQ(s, res); 2767 EXPECT_NOT_POISONED(strlen(res)); 2768} 2769 2770TEST(MemorySanitizer, tempnam) { 2771 char *res = tempnam(NULL, "zzz"); 2772 EXPECT_NOT_POISONED(strlen(res)); 2773 free(res); 2774} 2775 2776TEST(MemorySanitizer, posix_memalign) { 2777 void *p; 2778 EXPECT_POISONED(p); 2779 int res = posix_memalign(&p, 4096, 13); 2780 ASSERT_EQ(0, res); 2781 EXPECT_NOT_POISONED(p); 2782 EXPECT_EQ(0U, (uintptr_t)p % 4096); 2783 free(p); 2784} 2785 2786TEST(MemorySanitizer, memalign) { 2787 void *p = memalign(4096, 13); 2788 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2789 free(p); 2790} 2791 2792TEST(MemorySanitizer, valloc) { 2793 void *a = valloc(100); 2794 EXPECT_EQ(0U, (uintptr_t)a % kPageSize); 2795 free(a); 2796} 2797 2798TEST(MemorySanitizer, pvalloc) { 2799 void *p = pvalloc(kPageSize + 100); 2800 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2801 EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p)); 2802 free(p); 2803 2804 p = pvalloc(0); // pvalloc(0) should allocate at least one page. 2805 EXPECT_EQ(0U, (uintptr_t)p % kPageSize); 2806 EXPECT_EQ(kPageSize, __msan_get_allocated_size(p)); 2807 free(p); 2808} 2809 2810TEST(MemorySanitizer, inet_pton) { 2811 const char *s = "1:0:0:0:0:0:0:8"; 2812 unsigned char buf[sizeof(struct in6_addr)]; 2813 int res = inet_pton(AF_INET6, s, buf); 2814 ASSERT_EQ(1, res); 2815 EXPECT_NOT_POISONED(buf[0]); 2816 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); 2817 2818 char s_out[INET6_ADDRSTRLEN]; 2819 EXPECT_POISONED(s_out[3]); 2820 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); 2821 ASSERT_NE((void*)0, q); 2822 EXPECT_NOT_POISONED(s_out[3]); 2823} 2824 2825TEST(MemorySanitizer, inet_aton) { 2826 const char *s = "127.0.0.1"; 2827 struct in_addr in[2]; 2828 int res = inet_aton(s, in); 2829 ASSERT_NE(0, res); 2830 EXPECT_NOT_POISONED(in[0]); 2831 EXPECT_POISONED(*(char *)(in + 1)); 2832} 2833 2834TEST(MemorySanitizer, uname) { 2835 struct utsname u; 2836 int res = uname(&u); 2837 assert(!res); 2838 EXPECT_NOT_POISONED(strlen(u.sysname)); 2839 EXPECT_NOT_POISONED(strlen(u.nodename)); 2840 EXPECT_NOT_POISONED(strlen(u.release)); 2841 EXPECT_NOT_POISONED(strlen(u.version)); 2842 EXPECT_NOT_POISONED(strlen(u.machine)); 2843} 2844 2845TEST(MemorySanitizer, gethostname) { 2846 char buf[100]; 2847 int res = gethostname(buf, 100); 2848 assert(!res); 2849 EXPECT_NOT_POISONED(strlen(buf)); 2850} 2851 2852TEST(MemorySanitizer, sysinfo) { 2853 struct sysinfo info; 2854 int res = sysinfo(&info); 2855 assert(!res); 2856 EXPECT_NOT_POISONED(info); 2857} 2858 2859TEST(MemorySanitizer, getpwuid) { 2860 struct passwd *p = getpwuid(0); // root 2861 assert(p); 2862 EXPECT_NOT_POISONED(p->pw_name); 2863 assert(p->pw_name); 2864 EXPECT_NOT_POISONED(p->pw_name[0]); 2865 EXPECT_NOT_POISONED(p->pw_uid); 2866 assert(p->pw_uid == 0); 2867} 2868 2869TEST(MemorySanitizer, getpwnam_r) { 2870 struct passwd pwd; 2871 struct passwd *pwdres; 2872 char buf[10000]; 2873 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); 2874 assert(!res); 2875 EXPECT_NOT_POISONED(pwd.pw_name); 2876 assert(pwd.pw_name); 2877 EXPECT_NOT_POISONED(pwd.pw_name[0]); 2878 EXPECT_NOT_POISONED(pwd.pw_uid); 2879 assert(pwd.pw_uid == 0); 2880} 2881 2882TEST(MemorySanitizer, getpwnam_r_positive) { 2883 struct passwd pwd; 2884 struct passwd *pwdres; 2885 char s[5]; 2886 strncpy(s, "abcd", 5); 2887 __msan_poison(s, 5); 2888 char buf[10000]; 2889 int res; 2890 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); 2891} 2892 2893TEST(MemorySanitizer, getgrnam_r) { 2894 struct group grp; 2895 struct group *grpres; 2896 char buf[10000]; 2897 int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres); 2898 assert(!res); 2899 EXPECT_NOT_POISONED(grp.gr_name); 2900 assert(grp.gr_name); 2901 EXPECT_NOT_POISONED(grp.gr_name[0]); 2902 EXPECT_NOT_POISONED(grp.gr_gid); 2903} 2904 2905TEST(MemorySanitizer, getgroups) { 2906 int n = getgroups(0, 0); 2907 gid_t *gids = new gid_t[n]; 2908 int res = getgroups(n, gids); 2909 ASSERT_EQ(n, res); 2910 for (int i = 0; i < n; ++i) 2911 EXPECT_NOT_POISONED(gids[i]); 2912} 2913 2914TEST(MemorySanitizer, wordexp) { 2915 wordexp_t w; 2916 int res = wordexp("a b c", &w, 0); 2917 ASSERT_EQ(0, res); 2918 ASSERT_EQ(3, w.we_wordc); 2919 ASSERT_STREQ("a", w.we_wordv[0]); 2920 ASSERT_STREQ("b", w.we_wordv[1]); 2921 ASSERT_STREQ("c", w.we_wordv[2]); 2922} 2923 2924template<class T> 2925static bool applySlt(T value, T shadow) { 2926 __msan_partial_poison(&value, &shadow, sizeof(T)); 2927 volatile bool zzz = true; 2928 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of 2929 // a shift-and-trunc to get at the highest bit. 2930 volatile bool v = value < 0 || zzz; 2931 return v; 2932} 2933 2934TEST(MemorySanitizer, SignedCompareWithZero) { 2935 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); 2936 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); 2937 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); 2938 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); 2939 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); 2940 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); 2941} 2942 2943template <class T, class S> 2944static T poisoned(T Va, S Sa) { 2945 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; 2946 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; 2947 T a; 2948 a = Va; 2949 __msan_partial_poison(&a, &Sa, sizeof(T)); 2950 return a; 2951} 2952 2953TEST(MemorySanitizer, ICmpRelational) { 2954 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); 2955 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); 2956 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); 2957 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); 2958 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); 2959 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < 2960 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2961 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < 2962 poisoned(-1, 0xFFFFFFFFU)); 2963 2964 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); 2965 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); 2966 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); 2967 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); 2968 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); 2969 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= 2970 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2971 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= 2972 poisoned(-1, 0xFFFFFFFFU)); 2973 2974 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); 2975 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); 2976 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); 2977 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); 2978 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); 2979 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > 2980 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2981 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > 2982 poisoned(-1, 0xFFFFFFFFU)); 2983 2984 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); 2985 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); 2986 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); 2987 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); 2988 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); 2989 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= 2990 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); 2991 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= 2992 poisoned(-1, 0xFFFFFFFFU)); 2993 2994 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); 2995 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); 2996 2997 EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); 2998} 2999 3000#if MSAN_HAS_M128 3001TEST(MemorySanitizer, ICmpVectorRelational) { 3002 EXPECT_NOT_POISONED( 3003 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), 3004 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); 3005 EXPECT_NOT_POISONED( 3006 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), 3007 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); 3008 EXPECT_POISONED( 3009 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), 3010 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); 3011 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), 3012 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); 3013} 3014#endif 3015 3016// Volatile bitfield store is implemented as load-mask-store 3017// Test that we don't warn on the store of (uninitialized) padding. 3018struct VolatileBitfieldStruct { 3019 volatile unsigned x : 1; 3020 unsigned y : 1; 3021}; 3022 3023TEST(MemorySanitizer, VolatileBitfield) { 3024 VolatileBitfieldStruct *S = new VolatileBitfieldStruct; 3025 S->x = 1; 3026 EXPECT_NOT_POISONED((unsigned)S->x); 3027 EXPECT_POISONED((unsigned)S->y); 3028} 3029 3030TEST(MemorySanitizer, UnalignedLoad) { 3031 char x[32]; 3032 memset(x + 8, 0, 16); 3033 EXPECT_POISONED(__sanitizer_unaligned_load16(x+6)); 3034 EXPECT_POISONED(__sanitizer_unaligned_load16(x+7)); 3035 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8)); 3036 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9)); 3037 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22)); 3038 EXPECT_POISONED(__sanitizer_unaligned_load16(x+23)); 3039 EXPECT_POISONED(__sanitizer_unaligned_load16(x+24)); 3040 3041 EXPECT_POISONED(__sanitizer_unaligned_load32(x+4)); 3042 EXPECT_POISONED(__sanitizer_unaligned_load32(x+7)); 3043 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8)); 3044 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9)); 3045 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20)); 3046 EXPECT_POISONED(__sanitizer_unaligned_load32(x+21)); 3047 EXPECT_POISONED(__sanitizer_unaligned_load32(x+24)); 3048 3049 EXPECT_POISONED(__sanitizer_unaligned_load64(x)); 3050 EXPECT_POISONED(__sanitizer_unaligned_load64(x+1)); 3051 EXPECT_POISONED(__sanitizer_unaligned_load64(x+7)); 3052 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8)); 3053 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9)); 3054 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16)); 3055 EXPECT_POISONED(__sanitizer_unaligned_load64(x+17)); 3056 EXPECT_POISONED(__sanitizer_unaligned_load64(x+21)); 3057 EXPECT_POISONED(__sanitizer_unaligned_load64(x+24)); 3058} 3059 3060TEST(MemorySanitizer, UnalignedStore16) { 3061 char x[5]; 3062 U2 y = 0; 3063 __msan_poison(&y, 1); 3064 __sanitizer_unaligned_store16(x + 1, y); 3065 EXPECT_POISONED(x[0]); 3066 EXPECT_POISONED(x[1]); 3067 EXPECT_NOT_POISONED(x[2]); 3068 EXPECT_POISONED(x[3]); 3069 EXPECT_POISONED(x[4]); 3070} 3071 3072TEST(MemorySanitizer, UnalignedStore32) { 3073 char x[8]; 3074 U4 y4 = 0; 3075 __msan_poison(&y4, 2); 3076 __sanitizer_unaligned_store32(x+3, y4); 3077 EXPECT_POISONED(x[0]); 3078 EXPECT_POISONED(x[1]); 3079 EXPECT_POISONED(x[2]); 3080 EXPECT_POISONED(x[3]); 3081 EXPECT_POISONED(x[4]); 3082 EXPECT_NOT_POISONED(x[5]); 3083 EXPECT_NOT_POISONED(x[6]); 3084 EXPECT_POISONED(x[7]); 3085} 3086 3087TEST(MemorySanitizer, UnalignedStore64) { 3088 char x[16]; 3089 U8 y = 0; 3090 __msan_poison(&y, 3); 3091 __msan_poison(((char *)&y) + sizeof(y) - 2, 1); 3092 __sanitizer_unaligned_store64(x+3, y); 3093 EXPECT_POISONED(x[0]); 3094 EXPECT_POISONED(x[1]); 3095 EXPECT_POISONED(x[2]); 3096 EXPECT_POISONED(x[3]); 3097 EXPECT_POISONED(x[4]); 3098 EXPECT_POISONED(x[5]); 3099 EXPECT_NOT_POISONED(x[6]); 3100 EXPECT_NOT_POISONED(x[7]); 3101 EXPECT_NOT_POISONED(x[8]); 3102 EXPECT_POISONED(x[9]); 3103 EXPECT_NOT_POISONED(x[10]); 3104 EXPECT_POISONED(x[11]); 3105} 3106 3107TEST(MemorySanitizerDr, StoreInDSOTest) { 3108 if (!__msan_has_dynamic_component()) return; 3109 char* s = new char[10]; 3110 dso_memfill(s, 9); 3111 EXPECT_NOT_POISONED(s[5]); 3112 EXPECT_POISONED(s[9]); 3113} 3114 3115int return_poisoned_int() { 3116 return ReturnPoisoned<U8>(); 3117} 3118 3119TEST(MemorySanitizerDr, ReturnFromDSOTest) { 3120 if (!__msan_has_dynamic_component()) return; 3121 EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int)); 3122} 3123 3124NOINLINE int TrashParamTLS(long long x, long long y, long long z) { //NOLINT 3125 EXPECT_POISONED(x); 3126 EXPECT_POISONED(y); 3127 EXPECT_POISONED(z); 3128 return 0; 3129} 3130 3131static int CheckParamTLS(long long x, long long y, long long z) { //NOLINT 3132 EXPECT_NOT_POISONED(x); 3133 EXPECT_NOT_POISONED(y); 3134 EXPECT_NOT_POISONED(z); 3135 return 0; 3136} 3137 3138TEST(MemorySanitizerDr, CallFromDSOTest) { 3139 if (!__msan_has_dynamic_component()) return; 3140 S8* x = GetPoisoned<S8>(); 3141 S8* y = GetPoisoned<S8>(); 3142 S8* z = GetPoisoned<S8>(); 3143 EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z)); 3144 EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS)); 3145} 3146 3147static void StackStoreInDSOFn(int* x, int* y) { 3148 EXPECT_NOT_POISONED(*x); 3149 EXPECT_NOT_POISONED(*y); 3150} 3151 3152TEST(MemorySanitizerDr, StackStoreInDSOTest) { 3153 if (!__msan_has_dynamic_component()) return; 3154 dso_stack_store(StackStoreInDSOFn, 1); 3155} 3156 3157TEST(MemorySanitizerOrigins, SetGet) { 3158 EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins()); 3159 if (!TrackingOrigins()) return; 3160 int x; 3161 __msan_set_origin(&x, sizeof(x), 1234); 3162 EXPECT_EQ(1234, __msan_get_origin(&x)); 3163 __msan_set_origin(&x, sizeof(x), 5678); 3164 EXPECT_EQ(5678, __msan_get_origin(&x)); 3165 __msan_set_origin(&x, sizeof(x), 0); 3166 EXPECT_EQ(0, __msan_get_origin(&x)); 3167} 3168 3169namespace { 3170struct S { 3171 U4 dummy; 3172 U2 a; 3173 U2 b; 3174}; 3175 3176// http://code.google.com/p/memory-sanitizer/issues/detail?id=6 3177TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) { 3178 if (!TrackingOrigins()) return; 3179 3180 S s; 3181 U4 origin = rand(); // NOLINT 3182 s.a = *GetPoisonedO<U2>(0, origin); 3183 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3184 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3185 3186 s.b = 42; 3187 EXPECT_EQ(origin, __msan_get_origin(&s.a)); 3188 EXPECT_EQ(origin, __msan_get_origin(&s.b)); 3189} 3190} // namespace 3191 3192template<class T, class BinaryOp> 3193INLINE 3194void BinaryOpOriginTest(BinaryOp op) { 3195 U4 ox = rand(); //NOLINT 3196 U4 oy = rand(); //NOLINT 3197 T *x = GetPoisonedO<T>(0, ox, 0); 3198 T *y = GetPoisonedO<T>(1, oy, 0); 3199 T *z = GetPoisonedO<T>(2, 0, 0); 3200 3201 *z = op(*x, *y); 3202 U4 origin = __msan_get_origin(z); 3203 EXPECT_POISONED_O(*z, origin); 3204 EXPECT_EQ(true, origin == ox || origin == oy); 3205 3206 // y is poisoned, x is not. 3207 *x = 10101; 3208 *y = *GetPoisonedO<T>(1, oy); 3209 break_optimization(x); 3210 __msan_set_origin(z, sizeof(*z), 0); 3211 *z = op(*x, *y); 3212 EXPECT_POISONED_O(*z, oy); 3213 EXPECT_EQ(__msan_get_origin(z), oy); 3214 3215 // x is poisoned, y is not. 3216 *x = *GetPoisonedO<T>(0, ox); 3217 *y = 10101010; 3218 break_optimization(y); 3219 __msan_set_origin(z, sizeof(*z), 0); 3220 *z = op(*x, *y); 3221 EXPECT_POISONED_O(*z, ox); 3222 EXPECT_EQ(__msan_get_origin(z), ox); 3223} 3224 3225template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } 3226template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } 3227template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } 3228template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } 3229template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } 3230template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } 3231 3232TEST(MemorySanitizerOrigins, BinaryOp) { 3233 if (!TrackingOrigins()) return; 3234 BinaryOpOriginTest<S8>(XOR<S8>); 3235 BinaryOpOriginTest<U8>(ADD<U8>); 3236 BinaryOpOriginTest<S4>(SUB<S4>); 3237 BinaryOpOriginTest<S4>(MUL<S4>); 3238 BinaryOpOriginTest<U4>(OR<U4>); 3239 BinaryOpOriginTest<U4>(AND<U4>); 3240 BinaryOpOriginTest<double>(ADD<U4>); 3241 BinaryOpOriginTest<float>(ADD<S4>); 3242 BinaryOpOriginTest<double>(ADD<double>); 3243 BinaryOpOriginTest<float>(ADD<double>); 3244} 3245 3246TEST(MemorySanitizerOrigins, Unary) { 3247 if (!TrackingOrigins()) return; 3248 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3249 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3250 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3251 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3252 3253 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3254 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3255 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3256 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3257 3258 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3259 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3260 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3261 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); 3262 3263 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3264 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3265 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3266 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3267 3268 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); 3269 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); 3270} 3271 3272TEST(MemorySanitizerOrigins, EQ) { 3273 if (!TrackingOrigins()) return; 3274 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); 3275 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); 3276 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); 3277} 3278 3279TEST(MemorySanitizerOrigins, DIV) { 3280 if (!TrackingOrigins()) return; 3281 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); 3282 unsigned o = __LINE__; 3283 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); 3284} 3285 3286TEST(MemorySanitizerOrigins, SHIFT) { 3287 if (!TrackingOrigins()) return; 3288 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); 3289 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); 3290 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); 3291 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); 3292 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3293 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); 3294} 3295 3296template<class T, int N> 3297void MemCpyTest() { 3298 int ox = __LINE__; 3299 T *x = new T[N]; 3300 T *y = new T[N]; 3301 T *z = new T[N]; 3302 T *q = new T[N]; 3303 __msan_poison(x, N * sizeof(T)); 3304 __msan_set_origin(x, N * sizeof(T), ox); 3305 __msan_set_origin(y, N * sizeof(T), 777777); 3306 __msan_set_origin(z, N * sizeof(T), 888888); 3307 EXPECT_NOT_POISONED(x); 3308 memcpy(y, x, N * sizeof(T)); 3309 EXPECT_POISONED_O(y[0], ox); 3310 EXPECT_POISONED_O(y[N/2], ox); 3311 EXPECT_POISONED_O(y[N-1], ox); 3312 EXPECT_NOT_POISONED(x); 3313 void *res = mempcpy(q, x, N * sizeof(T)); 3314 ASSERT_EQ(q + N, res); 3315 EXPECT_POISONED_O(q[0], ox); 3316 EXPECT_POISONED_O(q[N/2], ox); 3317 EXPECT_POISONED_O(q[N-1], ox); 3318 EXPECT_NOT_POISONED(x); 3319 memmove(z, x, N * sizeof(T)); 3320 EXPECT_POISONED_O(z[0], ox); 3321 EXPECT_POISONED_O(z[N/2], ox); 3322 EXPECT_POISONED_O(z[N-1], ox); 3323} 3324 3325TEST(MemorySanitizerOrigins, LargeMemCpy) { 3326 if (!TrackingOrigins()) return; 3327 MemCpyTest<U1, 10000>(); 3328 MemCpyTest<U8, 10000>(); 3329} 3330 3331TEST(MemorySanitizerOrigins, SmallMemCpy) { 3332 if (!TrackingOrigins()) return; 3333 MemCpyTest<U8, 1>(); 3334 MemCpyTest<U8, 2>(); 3335 MemCpyTest<U8, 3>(); 3336} 3337 3338TEST(MemorySanitizerOrigins, Select) { 3339 if (!TrackingOrigins()) return; 3340 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); 3341 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); 3342 S4 x; 3343 break_optimization(&x); 3344 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; 3345 3346 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); 3347 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); 3348} 3349 3350extern "C" 3351NOINLINE char AllocaTO() { 3352 int ar[100]; 3353 break_optimization(ar); 3354 return ar[10]; 3355 // fprintf(stderr, "Descr: %s\n", 3356 // __msan_get_origin_descr_if_stack(__msan_get_origin_tls())); 3357} 3358 3359TEST(MemorySanitizerOrigins, Alloca) { 3360 if (!TrackingOrigins()) return; 3361 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3362 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3363 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3364 EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO"); 3365} 3366 3367// FIXME: replace with a lit-like test. 3368TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) { 3369 if (!TrackingOrigins()) return; 3370 EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO"); 3371} 3372 3373NOINLINE int RetvalOriginTest(U4 origin) { 3374 int *a = new int; 3375 break_optimization(a); 3376 __msan_set_origin(a, sizeof(*a), origin); 3377 int res = *a; 3378 delete a; 3379 return res; 3380} 3381 3382TEST(MemorySanitizerOrigins, Retval) { 3383 if (!TrackingOrigins()) return; 3384 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3385} 3386 3387NOINLINE void ParamOriginTest(int param, U4 origin) { 3388 EXPECT_POISONED_O(param, origin); 3389} 3390 3391TEST(MemorySanitizerOrigins, Param) { 3392 if (!TrackingOrigins()) return; 3393 int *a = new int; 3394 U4 origin = __LINE__; 3395 break_optimization(a); 3396 __msan_set_origin(a, sizeof(*a), origin); 3397 ParamOriginTest(*a, origin); 3398 delete a; 3399} 3400 3401TEST(MemorySanitizerOrigins, Invoke) { 3402 if (!TrackingOrigins()) return; 3403 StructWithDtor s; // Will cause the calls to become invokes. 3404 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); 3405} 3406 3407TEST(MemorySanitizerOrigins, strlen) { 3408 S8 alignment; 3409 break_optimization(&alignment); 3410 char x[4] = {'a', 'b', 0, 0}; 3411 __msan_poison(&x[2], 1); 3412 U4 origin = __LINE__; 3413 __msan_set_origin(x, sizeof(x), origin); 3414 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); 3415} 3416 3417TEST(MemorySanitizerOrigins, wcslen) { 3418 wchar_t w[3] = {'a', 'b', 0}; 3419 U4 origin = __LINE__; 3420 __msan_set_origin(w, sizeof(w), origin); 3421 __msan_poison(&w[2], sizeof(wchar_t)); 3422 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); 3423} 3424 3425#if MSAN_HAS_M128 3426TEST(MemorySanitizerOrigins, StoreIntrinsic) { 3427 __m128 x, y; 3428 U4 origin = __LINE__; 3429 __msan_set_origin(&x, sizeof(x), origin); 3430 __msan_poison(&x, sizeof(x)); 3431 __builtin_ia32_storeups((float*)&y, x); 3432 EXPECT_POISONED_O(y, origin); 3433} 3434#endif 3435 3436NOINLINE void RecursiveMalloc(int depth) { 3437 static int count; 3438 count++; 3439 if ((count % (1024 * 1024)) == 0) 3440 printf("RecursiveMalloc: %d\n", count); 3441 int *x1 = new int; 3442 int *x2 = new int; 3443 break_optimization(x1); 3444 break_optimization(x2); 3445 if (depth > 0) { 3446 RecursiveMalloc(depth-1); 3447 RecursiveMalloc(depth-1); 3448 } 3449 delete x1; 3450 delete x2; 3451} 3452 3453TEST(MemorySanitizer, Select) { 3454 int x; 3455 int volatile* p = &x; 3456 int z = *p ? 1 : 0; 3457 EXPECT_POISONED(z); 3458} 3459 3460TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { 3461 RecursiveMalloc(22); 3462} 3463 3464TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { 3465 size_t sizes[] = {0, 20, 5000, 1<<20}; 3466 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { 3467 size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]); 3468 EXPECT_EQ(alloc_size, sizes[i]); 3469 } 3470} 3471 3472TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { 3473 char *array = reinterpret_cast<char*>(malloc(100)); 3474 int *int_ptr = new int; 3475 3476 EXPECT_TRUE(__msan_get_ownership(array)); 3477 EXPECT_EQ(100, __msan_get_allocated_size(array)); 3478 3479 EXPECT_TRUE(__msan_get_ownership(int_ptr)); 3480 EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr)); 3481 3482 void *wild_addr = reinterpret_cast<void*>(0x1); 3483 EXPECT_FALSE(__msan_get_ownership(wild_addr)); 3484 EXPECT_EQ(0, __msan_get_allocated_size(wild_addr)); 3485 3486 EXPECT_FALSE(__msan_get_ownership(array + 50)); 3487 EXPECT_EQ(0, __msan_get_allocated_size(array + 50)); 3488 3489 // NULL is a valid argument for GetAllocatedSize but is not owned. 3490 EXPECT_FALSE(__msan_get_ownership(NULL)); 3491 EXPECT_EQ(0, __msan_get_allocated_size(NULL)); 3492 3493 free(array); 3494 EXPECT_FALSE(__msan_get_ownership(array)); 3495 EXPECT_EQ(0, __msan_get_allocated_size(array)); 3496 3497 delete int_ptr; 3498} 3499