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Diffstat (limited to 'compiler-rt/lib/msan/tests/msan_test.cpp')
| -rw-r--r-- | compiler-rt/lib/msan/tests/msan_test.cpp | 4800 |
1 files changed, 4800 insertions, 0 deletions
diff --git a/compiler-rt/lib/msan/tests/msan_test.cpp b/compiler-rt/lib/msan/tests/msan_test.cpp new file mode 100644 index 00000000000..33a3fbb1f27 --- /dev/null +++ b/compiler-rt/lib/msan/tests/msan_test.cpp @@ -0,0 +1,4800 @@ +//===-- msan_test.cpp -----------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is a part of MemorySanitizer. +// +// MemorySanitizer unit tests. +//===----------------------------------------------------------------------===// + +#ifndef MSAN_EXTERNAL_TEST_CONFIG +#include "msan_test_config.h" +#endif // MSAN_EXTERNAL_TEST_CONFIG + +#include "sanitizer_common/tests/sanitizer_test_utils.h" + +#include "sanitizer/allocator_interface.h" +#include "sanitizer/msan_interface.h" + +#if defined(__FreeBSD__) +# define _KERNEL // To declare 'shminfo' structure. +# include <sys/shm.h> +# undef _KERNEL +extern "C" { +// <sys/shm.h> doesn't declare these functions in _KERNEL mode. +void *shmat(int, const void *, int); +int shmget(key_t, size_t, int); +int shmctl(int, int, struct shmid_ds *); +int shmdt(const void *); +} +#endif + +#include <inttypes.h> +#include <stdlib.h> +#include <stdarg.h> +#include <stdio.h> +#include <wchar.h> +#include <math.h> + +#include <arpa/inet.h> +#include <dlfcn.h> +#include <grp.h> +#include <unistd.h> +#include <link.h> +#include <limits.h> +#include <sys/time.h> +#include <poll.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <sys/resource.h> +#include <sys/ioctl.h> +#include <sys/statvfs.h> +#include <sys/utsname.h> +#include <sys/mman.h> +#include <dirent.h> +#include <pwd.h> +#include <sys/socket.h> +#include <netdb.h> +#include <wordexp.h> +#include <sys/ipc.h> +#include <sys/shm.h> + +#if defined(__NetBSD__) +# include <signal.h> +# include <netinet/in.h> +# include <sys/uio.h> +# include <sys/mount.h> +# include <sys/sysctl.h> +# include <net/if.h> +# include <net/if_ether.h> +#elif defined(__FreeBSD__) +# include <signal.h> +# include <netinet/in.h> +# include <pthread_np.h> +# include <sys/uio.h> +# include <sys/mount.h> +# include <sys/sysctl.h> +# include <net/ethernet.h> +# define f_namelen f_namemax // FreeBSD names this statfs field so. +# define cpu_set_t cpuset_t +extern "C" { +// FreeBSD's <ssp/string.h> defines mempcpy() to be a macro expanding into +// a __builtin___mempcpy_chk() call, but since Msan RTL defines it as an +// ordinary function, we can declare it here to complete the tests. +void *mempcpy(void *dest, const void *src, size_t n); +} +#else +# include <malloc.h> +# include <sys/sysinfo.h> +# include <sys/vfs.h> +# include <mntent.h> +# include <netinet/ether.h> +# if defined(__linux__) +# include <sys/uio.h> +# endif +#endif + +#if defined(__i386__) || defined(__x86_64__) +# include <emmintrin.h> +# define MSAN_HAS_M128 1 +#else +# define MSAN_HAS_M128 0 +#endif + +#ifdef __AVX2__ +# include <immintrin.h> +#endif + +#if defined(__FreeBSD__) || defined(__NetBSD__) +# define FILE_TO_READ "/bin/cat" +# define DIR_TO_READ "/bin" +# define SUBFILE_TO_READ "cat" +# define SYMLINK_TO_READ "/usr/bin/tar" +# define SUPERUSER_GROUP "wheel" +#else +# define FILE_TO_READ "/proc/self/stat" +# define DIR_TO_READ "/proc/self" +# define SUBFILE_TO_READ "stat" +# define SYMLINK_TO_READ "/proc/self/exe" +# define SUPERUSER_GROUP "root" +#endif + +static uintptr_t GetPageSize() { + return sysconf(_SC_PAGESIZE); +} + +const size_t kMaxPathLength = 4096; + +typedef unsigned char U1; +typedef unsigned short U2; // NOLINT +typedef unsigned int U4; +typedef unsigned long long U8; // NOLINT +typedef signed char S1; +typedef signed short S2; // NOLINT +typedef signed int S4; +typedef signed long long S8; // NOLINT +#define NOINLINE __attribute__((noinline)) +#define INLINE __attribute__((always_inline)) + +static bool TrackingOrigins() { + S8 x; + __msan_set_origin(&x, sizeof(x), 0x1234); + U4 origin = __msan_get_origin(&x); + __msan_set_origin(&x, sizeof(x), 0); + return __msan_origin_is_descendant_or_same(origin, 0x1234); +} + +#define EXPECT_ORIGIN(expected, origin) \ + EXPECT_TRUE(__msan_origin_is_descendant_or_same((origin), (expected))) + +#define EXPECT_UMR(action) \ + do { \ + __msan_set_expect_umr(1); \ + action; \ + __msan_set_expect_umr(0); \ + } while (0) + +#define EXPECT_UMR_O(action, origin) \ + do { \ + __msan_set_expect_umr(1); \ + action; \ + __msan_set_expect_umr(0); \ + if (TrackingOrigins()) EXPECT_ORIGIN(origin, __msan_get_umr_origin()); \ + } while (0) + +#define EXPECT_POISONED(x) ExpectPoisoned(x) + +template <typename T> +void ExpectPoisoned(const T& t) { + EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); +} + +#define EXPECT_POISONED_O(x, origin) \ + ExpectPoisonedWithOrigin(x, origin) + +template<typename T> +void ExpectPoisonedWithOrigin(const T& t, unsigned origin) { + EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t))); + if (TrackingOrigins()) EXPECT_ORIGIN(origin, __msan_get_origin((void *)&t)); +} + +#define EXPECT_NOT_POISONED(x) EXPECT_EQ(true, TestForNotPoisoned((x))) +#define EXPECT_NOT_POISONED2(data, size) \ + EXPECT_EQ(true, TestForNotPoisoned((data), (size))) + +bool TestForNotPoisoned(const void *data, size_t size) { + return __msan_test_shadow(data, size) == -1; +} + +template<typename T> +bool TestForNotPoisoned(const T& t) { + return TestForNotPoisoned((void *)&t, sizeof(t)); +} + +static U8 poisoned_array[100]; +template<class T> +T *GetPoisoned(int i = 0, T val = 0) { + T *res = (T*)&poisoned_array[i]; + *res = val; + __msan_poison(&poisoned_array[i], sizeof(T)); + return res; +} + +template<class T> +T *GetPoisonedO(int i, U4 origin, T val = 0) { + T *res = (T*)&poisoned_array[i]; + *res = val; + __msan_poison(&poisoned_array[i], sizeof(T)); + __msan_set_origin(&poisoned_array[i], sizeof(T), origin); + return res; +} + +template<typename T> +T Poisoned(T v = 0, T s = (T)(-1)) { + __msan_partial_poison(&v, &s, sizeof(T)); + return v; +} + +template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); } + +static volatile int g_one = 1; +static volatile int g_zero = 0; +static volatile int g_0 = 0; +static volatile int g_1 = 1; + +S4 a_s4[100]; +S8 a_s8[100]; + +// Check that malloc poisons memory. +// A lot of tests below depend on this. +TEST(MemorySanitizerSanity, PoisonInMalloc) { + int *x = (int*)malloc(sizeof(int)); + EXPECT_POISONED(*x); + free(x); +} + +TEST(MemorySanitizer, NegativeTest1) { + S4 *x = GetPoisoned<S4>(); + if (g_one) + *x = 0; + EXPECT_NOT_POISONED(*x); +} + +TEST(MemorySanitizer, PositiveTest1) { + // Load to store. + EXPECT_POISONED(*GetPoisoned<S1>()); + EXPECT_POISONED(*GetPoisoned<S2>()); + EXPECT_POISONED(*GetPoisoned<S4>()); + EXPECT_POISONED(*GetPoisoned<S8>()); + + // S->S conversions. + EXPECT_POISONED(*GetPoisoned<S1>()); + EXPECT_POISONED(*GetPoisoned<S1>()); + EXPECT_POISONED(*GetPoisoned<S1>()); + + EXPECT_POISONED(*GetPoisoned<S2>()); + EXPECT_POISONED(*GetPoisoned<S2>()); + EXPECT_POISONED(*GetPoisoned<S2>()); + + EXPECT_POISONED(*GetPoisoned<S4>()); + EXPECT_POISONED(*GetPoisoned<S4>()); + EXPECT_POISONED(*GetPoisoned<S4>()); + + EXPECT_POISONED(*GetPoisoned<S8>()); + EXPECT_POISONED(*GetPoisoned<S8>()); + EXPECT_POISONED(*GetPoisoned<S8>()); + + // ZExt + EXPECT_POISONED(*GetPoisoned<U1>()); + EXPECT_POISONED(*GetPoisoned<U1>()); + EXPECT_POISONED(*GetPoisoned<U1>()); + EXPECT_POISONED(*GetPoisoned<U2>()); + EXPECT_POISONED(*GetPoisoned<U2>()); + EXPECT_POISONED(*GetPoisoned<U4>()); + + // Unary ops. + EXPECT_POISONED(- *GetPoisoned<S4>()); + + EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1)); + + + a_s4[g_zero] = 1 - *GetPoisoned<S4>(); + a_s4[g_zero] = 1 + *GetPoisoned<S4>(); +} + +TEST(MemorySanitizer, Phi1) { + S4 c; + if (g_one) { + c = *GetPoisoned<S4>(); + } else { + break_optimization(0); + c = 0; + } + EXPECT_POISONED(c); +} + +TEST(MemorySanitizer, Phi2) { + S4 i = *GetPoisoned<S4>(); + S4 n = g_one; + EXPECT_UMR(for (; i < g_one; i++);); + EXPECT_POISONED(i); +} + +NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); } +NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); } +NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); } + +TEST(MemorySanitizer, ArgTest) { + Arg1ExpectUMR(*GetPoisoned<S4>()); + Arg2ExpectUMR(0, *GetPoisoned<S4>()); + Arg3ExpectUMR(0, 1, *GetPoisoned<S8>()); +} + + +TEST(MemorySanitizer, CallAndRet) { + ReturnPoisoned<S1>(); + ReturnPoisoned<S2>(); + ReturnPoisoned<S4>(); + ReturnPoisoned<S8>(); + + EXPECT_POISONED(ReturnPoisoned<S1>()); + EXPECT_POISONED(ReturnPoisoned<S2>()); + EXPECT_POISONED(ReturnPoisoned<S4>()); + EXPECT_POISONED(ReturnPoisoned<S8>()); +} + +// malloc() in the following test may be optimized to produce a compile-time +// undef value. Check that we trap on the volatile assignment anyway. +TEST(MemorySanitizer, DISABLED_MallocNoIdent) { + S4 *x = (int*)malloc(sizeof(S4)); + EXPECT_POISONED(*x); + free(x); +} + +TEST(MemorySanitizer, Malloc) { + S4 *x = (int*)Ident(malloc(sizeof(S4))); + EXPECT_POISONED(*x); + free(x); +} + +TEST(MemorySanitizer, Realloc) { + S4 *x = (int*)Ident(realloc(0, sizeof(S4))); + EXPECT_POISONED(x[0]); + x[0] = 1; + x = (int*)Ident(realloc(x, 2 * sizeof(S4))); + EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. + EXPECT_POISONED(x[1]); + x = (int*)Ident(realloc(x, 3 * sizeof(S4))); + EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. + EXPECT_POISONED(x[2]); + EXPECT_POISONED(x[1]); + x[2] = 1; // Init this here. Check that after realloc it is poisoned again. + x = (int*)Ident(realloc(x, 2 * sizeof(S4))); + EXPECT_NOT_POISONED(x[0]); // Ok, was inited before. + EXPECT_POISONED(x[1]); + x = (int*)Ident(realloc(x, 3 * sizeof(S4))); + EXPECT_POISONED(x[1]); + EXPECT_POISONED(x[2]); + free(x); +} + +TEST(MemorySanitizer, Calloc) { + S4 *x = (int*)Ident(calloc(1, sizeof(S4))); + EXPECT_NOT_POISONED(*x); // Should not be poisoned. + EXPECT_EQ(0, *x); + free(x); +} + +TEST(MemorySanitizer, CallocReturnsZeroMem) { + size_t sizes[] = {16, 1000, 10000, 100000, 2100000}; + for (size_t s = 0; s < sizeof(sizes)/sizeof(sizes[0]); s++) { + size_t size = sizes[s]; + for (size_t iter = 0; iter < 5; iter++) { + char *x = Ident((char*)calloc(1, size)); + EXPECT_EQ(x[0], 0); + EXPECT_EQ(x[size - 1], 0); + EXPECT_EQ(x[size / 2], 0); + EXPECT_EQ(x[size / 3], 0); + EXPECT_EQ(x[size / 4], 0); + memset(x, 0x42, size); + free(Ident(x)); + } + } +} + +TEST(MemorySanitizer, AndOr) { + U4 *p = GetPoisoned<U4>(); + // We poison two bytes in the midle of a 4-byte word to make the test + // correct regardless of endianness. + ((U1*)p)[1] = 0; + ((U1*)p)[2] = 0xff; + EXPECT_NOT_POISONED(*p & 0x00ffff00); + EXPECT_NOT_POISONED(*p & 0x00ff0000); + EXPECT_NOT_POISONED(*p & 0x0000ff00); + EXPECT_POISONED(*p & 0xff000000); + EXPECT_POISONED(*p & 0x000000ff); + EXPECT_POISONED(*p & 0x0000ffff); + EXPECT_POISONED(*p & 0xffff0000); + + EXPECT_NOT_POISONED(*p | 0xff0000ff); + EXPECT_NOT_POISONED(*p | 0xff00ffff); + EXPECT_NOT_POISONED(*p | 0xffff00ff); + EXPECT_POISONED(*p | 0xff000000); + EXPECT_POISONED(*p | 0x000000ff); + EXPECT_POISONED(*p | 0x0000ffff); + EXPECT_POISONED(*p | 0xffff0000); + + EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>()); +} + +template<class T> +static bool applyNot(T value, T shadow) { + __msan_partial_poison(&value, &shadow, sizeof(T)); + return !value; +} + +TEST(MemorySanitizer, Not) { + EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0)); + EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0)); + EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF)); + EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF)); + EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF)); + EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF)); + EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000)); + EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000)); + EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000)); + EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000)); + + EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0)); + EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE)); + EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0)); + EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF)); + + EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1))); + EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2))); +} + +TEST(MemorySanitizer, Shift) { + U4 *up = GetPoisoned<U4>(); + ((U1*)up)[0] = 0; + ((U1*)up)[3] = 0xff; + EXPECT_NOT_POISONED(*up >> 30); + EXPECT_NOT_POISONED(*up >> 24); + EXPECT_POISONED(*up >> 23); + EXPECT_POISONED(*up >> 10); + + EXPECT_NOT_POISONED(*up << 30); + EXPECT_NOT_POISONED(*up << 24); + EXPECT_POISONED(*up << 23); + EXPECT_POISONED(*up << 10); + + S4 *sp = (S4*)up; + EXPECT_NOT_POISONED(*sp >> 30); + EXPECT_NOT_POISONED(*sp >> 24); + EXPECT_POISONED(*sp >> 23); + EXPECT_POISONED(*sp >> 10); + + sp = GetPoisoned<S4>(); + ((S1*)sp)[1] = 0; + ((S1*)sp)[2] = 0; + EXPECT_POISONED(*sp >> 31); + + EXPECT_POISONED(100 >> *GetPoisoned<S4>()); + EXPECT_POISONED(100U >> *GetPoisoned<S4>()); +} + +NOINLINE static int GetPoisonedZero() { + int *zero = new int; + *zero = 0; + __msan_poison(zero, sizeof(*zero)); + int res = *zero; + delete zero; + return res; +} + +TEST(MemorySanitizer, LoadFromDirtyAddress) { + int *a = new int; + *a = 0; + EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()])); + delete a; +} + +TEST(MemorySanitizer, StoreToDirtyAddress) { + int *a = new int; + EXPECT_UMR(a[GetPoisonedZero()] = 0); + break_optimization(a); + delete a; +} + + +NOINLINE void StackTestFunc() { + S4 p4; + S4 ok4 = 1; + S2 p2; + S2 ok2 = 1; + S1 p1; + S1 ok1 = 1; + break_optimization(&p4); + break_optimization(&ok4); + break_optimization(&p2); + break_optimization(&ok2); + break_optimization(&p1); + break_optimization(&ok1); + + EXPECT_POISONED(p4); + EXPECT_POISONED(p2); + EXPECT_POISONED(p1); + EXPECT_NOT_POISONED(ok1); + EXPECT_NOT_POISONED(ok2); + EXPECT_NOT_POISONED(ok4); +} + +TEST(MemorySanitizer, StackTest) { + StackTestFunc(); +} + +NOINLINE void StackStressFunc() { + int foo[10000]; + break_optimization(foo); +} + +TEST(MemorySanitizer, DISABLED_StackStressTest) { + for (int i = 0; i < 1000000; i++) + StackStressFunc(); +} + +template<class T> +void TestFloatingPoint() { + static volatile T v; + static T g[100]; + break_optimization(&g); + T *x = GetPoisoned<T>(); + T *y = GetPoisoned<T>(1); + EXPECT_POISONED(*x); + EXPECT_POISONED((long long)*x); + EXPECT_POISONED((int)*x); + g[0] = *x; + g[1] = *x + *y; + g[2] = *x - *y; + g[3] = *x * *y; +} + +TEST(MemorySanitizer, FloatingPointTest) { + TestFloatingPoint<float>(); + TestFloatingPoint<double>(); +} + +TEST(MemorySanitizer, DynMem) { + S4 x = 0; + S4 *y = GetPoisoned<S4>(); + memcpy(y, &x, g_one * sizeof(S4)); + EXPECT_NOT_POISONED(*y); +} + +static char *DynRetTestStr; + +TEST(MemorySanitizer, DynRet) { + ReturnPoisoned<S8>(); + EXPECT_NOT_POISONED(atoi("0")); +} + +TEST(MemorySanitizer, DynRet1) { + ReturnPoisoned<S8>(); +} + +struct LargeStruct { + S4 x[10]; +}; + +NOINLINE +LargeStruct LargeRetTest() { + LargeStruct res; + res.x[0] = *GetPoisoned<S4>(); + res.x[1] = *GetPoisoned<S4>(); + res.x[2] = *GetPoisoned<S4>(); + res.x[3] = *GetPoisoned<S4>(); + res.x[4] = *GetPoisoned<S4>(); + res.x[5] = *GetPoisoned<S4>(); + res.x[6] = *GetPoisoned<S4>(); + res.x[7] = *GetPoisoned<S4>(); + res.x[8] = *GetPoisoned<S4>(); + res.x[9] = *GetPoisoned<S4>(); + return res; +} + +TEST(MemorySanitizer, strcmp) { + char s1[10]; + char s2[10]; + strncpy(s1, "foo", 10); + s2[0] = 'f'; + s2[1] = 'n'; + EXPECT_GT(strcmp(s1, s2), 0); + s2[1] = 'o'; + int res; + EXPECT_UMR(res = strcmp(s1, s2)); + EXPECT_NOT_POISONED(res); + EXPECT_EQ(strncmp(s1, s2, 1), 0); +} + +TEST(MemorySanitizer, LargeRet) { + LargeStruct a = LargeRetTest(); + EXPECT_POISONED(a.x[0]); + EXPECT_POISONED(a.x[9]); +} + +TEST(MemorySanitizer, strerror) { + char *buf = strerror(EINVAL); + EXPECT_NOT_POISONED(strlen(buf)); + buf = strerror(123456); + EXPECT_NOT_POISONED(strlen(buf)); +} + +TEST(MemorySanitizer, strerror_r) { + errno = 0; + char buf[1000]; + char *res = (char*) (size_t) strerror_r(EINVAL, buf, sizeof(buf)); + ASSERT_EQ(0, errno); + if (!res) res = buf; // POSIX version success. + EXPECT_NOT_POISONED(strlen(res)); +} + +TEST(MemorySanitizer, fread) { + char *x = new char[32]; + FILE *f = fopen(FILE_TO_READ, "r"); + ASSERT_TRUE(f != NULL); + fread(x, 1, 32, f); + EXPECT_NOT_POISONED(x[0]); + EXPECT_NOT_POISONED(x[16]); + EXPECT_NOT_POISONED(x[31]); + fclose(f); + delete[] x; +} + +TEST(MemorySanitizer, read) { + char *x = new char[32]; + int fd = open(FILE_TO_READ, O_RDONLY); + ASSERT_GT(fd, 0); + int sz = read(fd, x, 32); + ASSERT_EQ(sz, 32); + EXPECT_NOT_POISONED(x[0]); + EXPECT_NOT_POISONED(x[16]); + EXPECT_NOT_POISONED(x[31]); + close(fd); + delete[] x; +} + +TEST(MemorySanitizer, pread) { + char *x = new char[32]; + int fd = open(FILE_TO_READ, O_RDONLY); + ASSERT_GT(fd, 0); + int sz = pread(fd, x, 32, 0); + ASSERT_EQ(sz, 32); + EXPECT_NOT_POISONED(x[0]); + EXPECT_NOT_POISONED(x[16]); + EXPECT_NOT_POISONED(x[31]); + close(fd); + delete[] x; +} + +TEST(MemorySanitizer, readv) { + char buf[2011]; + struct iovec iov[2]; + iov[0].iov_base = buf + 1; + iov[0].iov_len = 5; + iov[1].iov_base = buf + 10; + iov[1].iov_len = 2000; + int fd = open(FILE_TO_READ, O_RDONLY); + ASSERT_GT(fd, 0); + int sz = readv(fd, iov, 2); + ASSERT_GE(sz, 0); + ASSERT_LE(sz, 5 + 2000); + ASSERT_GT((size_t)sz, iov[0].iov_len); + EXPECT_POISONED(buf[0]); + EXPECT_NOT_POISONED(buf[1]); + EXPECT_NOT_POISONED(buf[5]); + EXPECT_POISONED(buf[6]); + EXPECT_POISONED(buf[9]); + EXPECT_NOT_POISONED(buf[10]); + EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); + EXPECT_POISONED(buf[11 + (sz - 1) - 5]); + close(fd); +} + +TEST(MemorySanitizer, preadv) { + char buf[2011]; + struct iovec iov[2]; + iov[0].iov_base = buf + 1; + iov[0].iov_len = 5; + iov[1].iov_base = buf + 10; + iov[1].iov_len = 2000; + int fd = open(FILE_TO_READ, O_RDONLY); + ASSERT_GT(fd, 0); + int sz = preadv(fd, iov, 2, 3); + ASSERT_GE(sz, 0); + ASSERT_LE(sz, 5 + 2000); + ASSERT_GT((size_t)sz, iov[0].iov_len); + EXPECT_POISONED(buf[0]); + EXPECT_NOT_POISONED(buf[1]); + EXPECT_NOT_POISONED(buf[5]); + EXPECT_POISONED(buf[6]); + EXPECT_POISONED(buf[9]); + EXPECT_NOT_POISONED(buf[10]); + EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]); + EXPECT_POISONED(buf[11 + (sz - 1) - 5]); + close(fd); +} + +// FIXME: fails now. +TEST(MemorySanitizer, DISABLED_ioctl) { + struct winsize ws; + EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0); + EXPECT_NOT_POISONED(ws.ws_col); +} + +TEST(MemorySanitizer, readlink) { + char *x = new char[1000]; + readlink(SYMLINK_TO_READ, x, 1000); + EXPECT_NOT_POISONED(x[0]); + delete [] x; +} + +TEST(MemorySanitizer, readlinkat) { + char *x = new char[1000]; + readlinkat(AT_FDCWD, SYMLINK_TO_READ, x, 1000); + EXPECT_NOT_POISONED(x[0]); + delete[] x; +} + +TEST(MemorySanitizer, stat) { + struct stat* st = new struct stat; + int res = stat(FILE_TO_READ, st); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(st->st_dev); + EXPECT_NOT_POISONED(st->st_mode); + EXPECT_NOT_POISONED(st->st_size); +} + +TEST(MemorySanitizer, fstatat) { + struct stat* st = new struct stat; + int dirfd = open(DIR_TO_READ, O_RDONLY); + ASSERT_GT(dirfd, 0); + int res = fstatat(dirfd, SUBFILE_TO_READ, st, 0); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(st->st_dev); + EXPECT_NOT_POISONED(st->st_mode); + EXPECT_NOT_POISONED(st->st_size); + close(dirfd); +} + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, statfs) { + struct statfs st; + int res = statfs("/", &st); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(st.f_type); + EXPECT_NOT_POISONED(st.f_bfree); + EXPECT_NOT_POISONED(st.f_namelen); +} +#endif + +TEST(MemorySanitizer, statvfs) { + struct statvfs st; + int res = statvfs("/", &st); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(st.f_bsize); + EXPECT_NOT_POISONED(st.f_blocks); + EXPECT_NOT_POISONED(st.f_bfree); + EXPECT_NOT_POISONED(st.f_namemax); +} + +TEST(MemorySanitizer, fstatvfs) { + struct statvfs st; + int fd = open("/", O_RDONLY | O_DIRECTORY); + int res = fstatvfs(fd, &st); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(st.f_bsize); + EXPECT_NOT_POISONED(st.f_blocks); + EXPECT_NOT_POISONED(st.f_bfree); + EXPECT_NOT_POISONED(st.f_namemax); + close(fd); +} + +TEST(MemorySanitizer, pipe) { + int* pipefd = new int[2]; + int res = pipe(pipefd); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(pipefd[0]); + EXPECT_NOT_POISONED(pipefd[1]); + close(pipefd[0]); + close(pipefd[1]); +} + +TEST(MemorySanitizer, pipe2) { + int* pipefd = new int[2]; + int res = pipe2(pipefd, O_NONBLOCK); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(pipefd[0]); + EXPECT_NOT_POISONED(pipefd[1]); + close(pipefd[0]); + close(pipefd[1]); +} + +TEST(MemorySanitizer, socketpair) { + int sv[2]; + int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(sv[0]); + EXPECT_NOT_POISONED(sv[1]); + close(sv[0]); + close(sv[1]); +} + +TEST(MemorySanitizer, poll) { + int* pipefd = new int[2]; + int res = pipe(pipefd); + ASSERT_EQ(0, res); + + char data = 42; + res = write(pipefd[1], &data, 1); + ASSERT_EQ(1, res); + + pollfd fds[2]; + fds[0].fd = pipefd[0]; + fds[0].events = POLLIN; + fds[1].fd = pipefd[1]; + fds[1].events = POLLIN; + res = poll(fds, 2, 500); + ASSERT_EQ(1, res); + EXPECT_NOT_POISONED(fds[0].revents); + EXPECT_NOT_POISONED(fds[1].revents); + + close(pipefd[0]); + close(pipefd[1]); +} + +#if !defined (__FreeBSD__) && !defined (__NetBSD__) +TEST(MemorySanitizer, ppoll) { + int* pipefd = new int[2]; + int res = pipe(pipefd); + ASSERT_EQ(0, res); + + char data = 42; + res = write(pipefd[1], &data, 1); + ASSERT_EQ(1, res); + + pollfd fds[2]; + fds[0].fd = pipefd[0]; + fds[0].events = POLLIN; + fds[1].fd = pipefd[1]; + fds[1].events = POLLIN; + sigset_t ss; + sigemptyset(&ss); + res = ppoll(fds, 2, NULL, &ss); + ASSERT_EQ(1, res); + EXPECT_NOT_POISONED(fds[0].revents); + EXPECT_NOT_POISONED(fds[1].revents); + + close(pipefd[0]); + close(pipefd[1]); +} +#endif + +TEST(MemorySanitizer, poll_positive) { + int* pipefd = new int[2]; + int res = pipe(pipefd); + ASSERT_EQ(0, res); + + pollfd fds[2]; + fds[0].fd = pipefd[0]; + fds[0].events = POLLIN; + // fds[1].fd uninitialized + fds[1].events = POLLIN; + EXPECT_UMR(poll(fds, 2, 0)); + + close(pipefd[0]); + close(pipefd[1]); +} + +TEST(MemorySanitizer, bind_getsockname) { + int sock = socket(AF_UNIX, SOCK_STREAM, 0); + + struct sockaddr_in sai; + memset(&sai, 0, sizeof(sai)); + sai.sin_family = AF_UNIX; + int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai)); + + ASSERT_EQ(0, res); + char buf[200]; + socklen_t addrlen; + EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen)); + + addrlen = sizeof(buf); + res = getsockname(sock, (struct sockaddr *)&buf, &addrlen); + EXPECT_NOT_POISONED(addrlen); + EXPECT_NOT_POISONED(buf[0]); + EXPECT_NOT_POISONED(buf[addrlen - 1]); + EXPECT_POISONED(buf[addrlen]); + close(sock); +} + +class SocketAddr { + public: + virtual ~SocketAddr() = default; + virtual struct sockaddr *ptr() = 0; + virtual size_t size() const = 0; + + template <class... Args> + static std::unique_ptr<SocketAddr> Create(int family, Args... args); +}; + +class SocketAddr4 : public SocketAddr { + public: + SocketAddr4() { EXPECT_POISONED(sai_); } + explicit SocketAddr4(uint16_t port) { + memset(&sai_, 0, sizeof(sai_)); + sai_.sin_family = AF_INET; + sai_.sin_port = port; + sai_.sin_addr.s_addr = htonl(INADDR_LOOPBACK); + } + + sockaddr *ptr() override { return reinterpret_cast<sockaddr *>(&sai_); } + + size_t size() const override { return sizeof(sai_); } + + private: + sockaddr_in sai_; +}; + +class SocketAddr6 : public SocketAddr { + public: + SocketAddr6() { EXPECT_POISONED(sai_); } + explicit SocketAddr6(uint16_t port) { + memset(&sai_, 0, sizeof(sai_)); + sai_.sin6_family = AF_INET6; + sai_.sin6_port = port; + sai_.sin6_addr = in6addr_loopback; + } + + sockaddr *ptr() override { return reinterpret_cast<sockaddr *>(&sai_); } + + size_t size() const override { return sizeof(sai_); } + + private: + sockaddr_in6 sai_; +}; + +template <class... Args> +std::unique_ptr<SocketAddr> SocketAddr::Create(int family, Args... args) { + if (family == AF_INET) + return std::unique_ptr<SocketAddr>(new SocketAddr4(args...)); + return std::unique_ptr<SocketAddr>(new SocketAddr6(args...)); +} + +class MemorySanitizerIpTest : public ::testing::TestWithParam<int> { + public: + void SetUp() override { + ASSERT_TRUE(GetParam() == AF_INET || GetParam() == AF_INET6); + } + + template <class... Args> + std::unique_ptr<SocketAddr> CreateSockAddr(Args... args) const { + return SocketAddr::Create(GetParam(), args...); + } + + int CreateSocket(int socket_type) const { + return socket(GetParam(), socket_type, 0); + } +}; + +std::vector<int> GetAvailableIpSocketFamilies() { + std::vector<int> result; + + for (int i : {AF_INET, AF_INET6}) { + int s = socket(i, SOCK_STREAM, 0); + if (s > 0) { + auto sai = SocketAddr::Create(i, 0); + if (bind(s, sai->ptr(), sai->size()) == 0) result.push_back(i); + close(s); + } + } + + return result; +} + +INSTANTIATE_TEST_CASE_P(IpTests, MemorySanitizerIpTest, + ::testing::ValuesIn(GetAvailableIpSocketFamilies())); + +TEST_P(MemorySanitizerIpTest, accept) { + int listen_socket = CreateSocket(SOCK_STREAM); + ASSERT_LT(0, listen_socket); + + auto sai = CreateSockAddr(0); + int res = bind(listen_socket, sai->ptr(), sai->size()); + ASSERT_EQ(0, res); + + res = listen(listen_socket, 1); + ASSERT_EQ(0, res); + + socklen_t sz = sai->size(); + res = getsockname(listen_socket, sai->ptr(), &sz); + ASSERT_EQ(0, res); + ASSERT_EQ(sai->size(), sz); + + int connect_socket = CreateSocket(SOCK_STREAM); + ASSERT_LT(0, connect_socket); + res = fcntl(connect_socket, F_SETFL, O_NONBLOCK); + ASSERT_EQ(0, res); + res = connect(connect_socket, sai->ptr(), sai->size()); + // On FreeBSD this connection completes immediately. + if (res != 0) { + ASSERT_EQ(-1, res); + ASSERT_EQ(EINPROGRESS, errno); + } + + __msan_poison(sai->ptr(), sai->size()); + int new_sock = accept(listen_socket, sai->ptr(), &sz); + ASSERT_LT(0, new_sock); + ASSERT_EQ(sai->size(), sz); + EXPECT_NOT_POISONED2(sai->ptr(), sai->size()); + + __msan_poison(sai->ptr(), sai->size()); + res = getpeername(new_sock, sai->ptr(), &sz); + ASSERT_EQ(0, res); + ASSERT_EQ(sai->size(), sz); + EXPECT_NOT_POISONED2(sai->ptr(), sai->size()); + + close(new_sock); + close(connect_socket); + close(listen_socket); +} + +TEST_P(MemorySanitizerIpTest, recvmsg) { + int server_socket = CreateSocket(SOCK_DGRAM); + ASSERT_LT(0, server_socket); + + auto sai = CreateSockAddr(0); + int res = bind(server_socket, sai->ptr(), sai->size()); + ASSERT_EQ(0, res); + + socklen_t sz = sai->size(); + res = getsockname(server_socket, sai->ptr(), &sz); + ASSERT_EQ(0, res); + ASSERT_EQ(sai->size(), sz); + + int client_socket = CreateSocket(SOCK_DGRAM); + ASSERT_LT(0, client_socket); + + auto client_sai = CreateSockAddr(0); + res = bind(client_socket, client_sai->ptr(), client_sai->size()); + ASSERT_EQ(0, res); + + sz = client_sai->size(); + res = getsockname(client_socket, client_sai->ptr(), &sz); + ASSERT_EQ(0, res); + ASSERT_EQ(client_sai->size(), sz); + + const char *s = "message text"; + struct iovec iov; + iov.iov_base = (void *)s; + iov.iov_len = strlen(s) + 1; + struct msghdr msg; + memset(&msg, 0, sizeof(msg)); + msg.msg_name = sai->ptr(); + msg.msg_namelen = sai->size(); + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + res = sendmsg(client_socket, &msg, 0); + ASSERT_LT(0, res); + + char buf[1000]; + struct iovec recv_iov; + recv_iov.iov_base = (void *)&buf; + recv_iov.iov_len = sizeof(buf); + auto recv_sai = CreateSockAddr(); + struct msghdr recv_msg; + memset(&recv_msg, 0, sizeof(recv_msg)); + recv_msg.msg_name = recv_sai->ptr(); + recv_msg.msg_namelen = recv_sai->size(); + recv_msg.msg_iov = &recv_iov; + recv_msg.msg_iovlen = 1; + res = recvmsg(server_socket, &recv_msg, 0); + ASSERT_LT(0, res); + + ASSERT_EQ(recv_sai->size(), recv_msg.msg_namelen); + EXPECT_NOT_POISONED2(recv_sai->ptr(), recv_sai->size()); + EXPECT_STREQ(s, buf); + + close(server_socket); + close(client_socket); +} + +#define EXPECT_HOSTENT_NOT_POISONED(he) \ + do { \ + EXPECT_NOT_POISONED(*(he)); \ + ASSERT_NE((void *)0, (he)->h_name); \ + ASSERT_NE((void *)0, (he)->h_aliases); \ + ASSERT_NE((void *)0, (he)->h_addr_list); \ + EXPECT_NOT_POISONED(strlen((he)->h_name)); \ + char **p = (he)->h_aliases; \ + while (*p) { \ + EXPECT_NOT_POISONED(strlen(*p)); \ + ++p; \ + } \ + char **q = (he)->h_addr_list; \ + while (*q) { \ + EXPECT_NOT_POISONED(*q[0]); \ + ++q; \ + } \ + EXPECT_NOT_POISONED(*q); \ + } while (0) + +TEST(MemorySanitizer, gethostent) { + struct hostent *he = gethostent(); + ASSERT_NE((void *)NULL, he); + EXPECT_HOSTENT_NOT_POISONED(he); +} + +#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME + +TEST(MemorySanitizer, gethostbyname) { + struct hostent *he = gethostbyname("localhost"); + ASSERT_NE((void *)NULL, he); + EXPECT_HOSTENT_NOT_POISONED(he); +} + +#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME + +TEST(MemorySanitizer, getaddrinfo) { + struct addrinfo *ai; + struct addrinfo hints; + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_INET; + int res = getaddrinfo("localhost", NULL, &hints, &ai); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(*ai); + ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen); + EXPECT_NOT_POISONED(*(sockaddr_in *)ai->ai_addr); +} + +TEST(MemorySanitizer, getnameinfo) { + struct sockaddr_in sai; + memset(&sai, 0, sizeof(sai)); + sai.sin_family = AF_INET; + sai.sin_port = 80; + sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK); + char host[500]; + char serv[500]; + int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host, + sizeof(host), serv, sizeof(serv), 0); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(host[0]); + EXPECT_POISONED(host[sizeof(host) - 1]); + + ASSERT_NE(0U, strlen(host)); + EXPECT_NOT_POISONED(serv[0]); + EXPECT_POISONED(serv[sizeof(serv) - 1]); + ASSERT_NE(0U, strlen(serv)); +} + +TEST(MemorySanitizer, gethostbyname2) { + struct hostent *he = gethostbyname2("localhost", AF_INET); + ASSERT_NE((void *)NULL, he); + EXPECT_HOSTENT_NOT_POISONED(he); +} + +TEST(MemorySanitizer, gethostbyaddr) { + in_addr_t addr = inet_addr("127.0.0.1"); + EXPECT_NOT_POISONED(addr); + struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET); + ASSERT_NE((void *)NULL, he); + EXPECT_HOSTENT_NOT_POISONED(he); +} + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, gethostent_r) { + char buf[2000]; + struct hostent he; + struct hostent *result; + int err; + int res = gethostent_r(&he, buf, sizeof(buf), &result, &err); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(result); + ASSERT_NE((void *)NULL, result); + EXPECT_HOSTENT_NOT_POISONED(result); + EXPECT_NOT_POISONED(err); +} +#endif + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, gethostbyname_r) { + char buf[2000]; + struct hostent he; + struct hostent *result; + int err; + int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(result); + ASSERT_NE((void *)NULL, result); + EXPECT_HOSTENT_NOT_POISONED(result); + EXPECT_NOT_POISONED(err); +} +#endif + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, gethostbyname_r_bad_host_name) { + char buf[2000]; + struct hostent he; + struct hostent *result; + int err; + int res = gethostbyname_r("bad-host-name", &he, buf, sizeof(buf), &result, &err); + ASSERT_EQ((struct hostent *)0, result); + EXPECT_NOT_POISONED(err); +} +#endif + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, gethostbyname_r_erange) { + char buf[5]; + struct hostent he; + struct hostent *result; + int err; + gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err); + ASSERT_EQ(ERANGE, errno); + EXPECT_NOT_POISONED(err); +} +#endif + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, gethostbyname2_r) { + char buf[2000]; + struct hostent he; + struct hostent *result; + int err; + int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf), + &result, &err); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(result); + ASSERT_NE((void *)NULL, result); + EXPECT_HOSTENT_NOT_POISONED(result); + EXPECT_NOT_POISONED(err); +} +#endif + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, gethostbyaddr_r) { + char buf[2000]; + struct hostent he; + struct hostent *result; + int err; + in_addr_t addr = inet_addr("127.0.0.1"); + EXPECT_NOT_POISONED(addr); + int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf), + &result, &err); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(result); + ASSERT_NE((void *)NULL, result); + EXPECT_HOSTENT_NOT_POISONED(result); + EXPECT_NOT_POISONED(err); +} +#endif + +TEST(MemorySanitizer, getsockopt) { + int sock = socket(AF_UNIX, SOCK_STREAM, 0); + struct linger l[2]; + socklen_t sz = sizeof(l[0]); + int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz); + ASSERT_EQ(0, res); + ASSERT_EQ(sizeof(l[0]), sz); + EXPECT_NOT_POISONED(l[0]); + EXPECT_POISONED(*(char *)(l + 1)); +} + +TEST(MemorySanitizer, getcwd) { + char path[PATH_MAX + 1]; + char* res = getcwd(path, sizeof(path)); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(path[0]); +} + +TEST(MemorySanitizer, getcwd_gnu) { + char* res = getcwd(NULL, 0); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(res[0]); + free(res); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, get_current_dir_name) { + char* res = get_current_dir_name(); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(res[0]); + free(res); +} +#endif + +TEST(MemorySanitizer, shmctl) { + int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT); + ASSERT_GT(id, -1); + + struct shmid_ds ds; + int res = shmctl(id, IPC_STAT, &ds); + ASSERT_GT(res, -1); + EXPECT_NOT_POISONED(ds); + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) + struct shminfo si; + res = shmctl(id, IPC_INFO, (struct shmid_ds *)&si); + ASSERT_GT(res, -1); + EXPECT_NOT_POISONED(si); + + struct shm_info s_i; + res = shmctl(id, SHM_INFO, (struct shmid_ds *)&s_i); + ASSERT_GT(res, -1); + EXPECT_NOT_POISONED(s_i); +#endif + + res = shmctl(id, IPC_RMID, 0); + ASSERT_GT(res, -1); +} + +TEST(MemorySanitizer, shmat) { + const int kShmSize = 4096; + void *mapping_start = mmap(NULL, kShmSize + SHMLBA, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + ASSERT_NE(MAP_FAILED, mapping_start); + + void *p = (void *)(((unsigned long)mapping_start + SHMLBA - 1) / SHMLBA * SHMLBA); + // p is now SHMLBA-aligned; + + ((char *)p)[10] = *GetPoisoned<U1>(); + ((char *)p)[kShmSize - 1] = *GetPoisoned<U1>(); + + int res = munmap(mapping_start, kShmSize + SHMLBA); + ASSERT_EQ(0, res); + + int id = shmget(IPC_PRIVATE, kShmSize, 0644 | IPC_CREAT); + ASSERT_GT(id, -1); + + void *q = shmat(id, p, 0); + ASSERT_EQ(p, q); + + EXPECT_NOT_POISONED(((char *)q)[0]); + EXPECT_NOT_POISONED(((char *)q)[10]); + EXPECT_NOT_POISONED(((char *)q)[kShmSize - 1]); + + res = shmdt(q); + ASSERT_EQ(0, res); + + res = shmctl(id, IPC_RMID, 0); + ASSERT_GT(res, -1); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, random_r) { + int32_t x; + char z[64]; + memset(z, 0, sizeof(z)); + + struct random_data buf; + memset(&buf, 0, sizeof(buf)); + + int res = initstate_r(0, z, sizeof(z), &buf); + ASSERT_EQ(0, res); + + res = random_r(&buf, &x); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(x); +} +#endif + +TEST(MemorySanitizer, confstr) { + char buf[3]; + size_t res = confstr(_CS_PATH, buf, sizeof(buf)); + ASSERT_GT(res, sizeof(buf)); + EXPECT_NOT_POISONED(buf[0]); + EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]); + + char buf2[1000]; + res = confstr(_CS_PATH, buf2, sizeof(buf2)); + ASSERT_LT(res, sizeof(buf2)); + EXPECT_NOT_POISONED(buf2[0]); + EXPECT_NOT_POISONED(buf2[res - 1]); + EXPECT_POISONED(buf2[res]); + ASSERT_EQ(res, strlen(buf2) + 1); +} + +TEST(MemorySanitizer, opendir) { + DIR *dir = opendir("."); + closedir(dir); + + char name[10] = "."; + __msan_poison(name, sizeof(name)); + EXPECT_UMR(dir = opendir(name)); + closedir(dir); +} + +TEST(MemorySanitizer, readdir) { + DIR *dir = opendir("."); + struct dirent *d = readdir(dir); + ASSERT_TRUE(d != NULL); + EXPECT_NOT_POISONED(d->d_name[0]); + closedir(dir); +} + +TEST(MemorySanitizer, readdir_r) { + DIR *dir = opendir("."); + struct dirent d; + struct dirent *pd; + int res = readdir_r(dir, &d, &pd); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(pd); + EXPECT_NOT_POISONED(d.d_name[0]); + closedir(dir); +} + +TEST(MemorySanitizer, realpath) { + const char* relpath = "."; + char path[PATH_MAX + 1]; + char* res = realpath(relpath, path); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(path[0]); +} + +TEST(MemorySanitizer, realpath_null) { + const char* relpath = "."; + char* res = realpath(relpath, NULL); + printf("%d, %s\n", errno, strerror(errno)); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(res[0]); + free(res); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, canonicalize_file_name) { + const char* relpath = "."; + char* res = canonicalize_file_name(relpath); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(res[0]); + free(res); +} +#endif + +extern char **environ; + +TEST(MemorySanitizer, setenv) { + setenv("AAA", "BBB", 1); + for (char **envp = environ; *envp; ++envp) { + EXPECT_NOT_POISONED(*envp); + EXPECT_NOT_POISONED(*envp[0]); + } +} + +TEST(MemorySanitizer, putenv) { + char s[] = "AAA=BBB"; + putenv(s); + for (char **envp = environ; *envp; ++envp) { + EXPECT_NOT_POISONED(*envp); + EXPECT_NOT_POISONED(*envp[0]); + } +} + +TEST(MemorySanitizer, memcpy) { + char* x = new char[2]; + char* y = new char[2]; + x[0] = 1; + x[1] = *GetPoisoned<char>(); + memcpy(y, x, 2); + EXPECT_NOT_POISONED(y[0]); + EXPECT_POISONED(y[1]); +} + +void TestUnalignedMemcpy(unsigned left, unsigned right, bool src_is_aligned, + bool src_is_poisoned, bool dst_is_poisoned) { + fprintf(stderr, "%s(%d, %d, %d, %d, %d)\n", __func__, left, right, + src_is_aligned, src_is_poisoned, dst_is_poisoned); + + const unsigned sz = 20; + U4 dst_origin, src_origin; + char *dst = (char *)malloc(sz); + if (dst_is_poisoned) + dst_origin = __msan_get_origin(dst); + else + memset(dst, 0, sz); + + char *src = (char *)malloc(sz); + if (src_is_poisoned) + src_origin = __msan_get_origin(src); + else + memset(src, 0, sz); + + memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right); + + for (unsigned i = 0; i < (left & (~3U)); ++i) + if (dst_is_poisoned) + EXPECT_POISONED_O(dst[i], dst_origin); + else + EXPECT_NOT_POISONED(dst[i]); + + for (unsigned i = 0; i < (right & (~3U)); ++i) + if (dst_is_poisoned) + EXPECT_POISONED_O(dst[sz - i - 1], dst_origin); + else + EXPECT_NOT_POISONED(dst[sz - i - 1]); + + for (unsigned i = left; i < sz - right; ++i) + if (src_is_poisoned) + EXPECT_POISONED_O(dst[i], src_origin); + else + EXPECT_NOT_POISONED(dst[i]); + + free(dst); + free(src); +} + +TEST(MemorySanitizer, memcpy_unaligned) { + for (int i = 0; i < 10; ++i) + for (int j = 0; j < 10; ++j) + for (int aligned = 0; aligned < 2; ++aligned) + for (int srcp = 0; srcp < 2; ++srcp) + for (int dstp = 0; dstp < 2; ++dstp) + TestUnalignedMemcpy(i, j, aligned, srcp, dstp); +} + +TEST(MemorySanitizer, memmove) { + char* x = new char[2]; + char* y = new char[2]; + x[0] = 1; + x[1] = *GetPoisoned<char>(); + memmove(y, x, 2); + EXPECT_NOT_POISONED(y[0]); + EXPECT_POISONED(y[1]); +} + +TEST(MemorySanitizer, memccpy_nomatch) { + char* x = new char[5]; + char* y = new char[5]; + strcpy(x, "abc"); + memccpy(y, x, 'd', 4); + EXPECT_NOT_POISONED(y[0]); + EXPECT_NOT_POISONED(y[1]); + EXPECT_NOT_POISONED(y[2]); + EXPECT_NOT_POISONED(y[3]); + EXPECT_POISONED(y[4]); + delete[] x; + delete[] y; +} + +TEST(MemorySanitizer, memccpy_match) { + char* x = new char[5]; + char* y = new char[5]; + strcpy(x, "abc"); + memccpy(y, x, 'b', 4); + EXPECT_NOT_POISONED(y[0]); + EXPECT_NOT_POISONED(y[1]); + EXPECT_POISONED(y[2]); + EXPECT_POISONED(y[3]); + EXPECT_POISONED(y[4]); + delete[] x; + delete[] y; +} + +TEST(MemorySanitizer, memccpy_nomatch_positive) { + char* x = new char[5]; + char* y = new char[5]; + strcpy(x, "abc"); + EXPECT_UMR(memccpy(y, x, 'd', 5)); + delete[] x; + delete[] y; +} + +TEST(MemorySanitizer, memccpy_match_positive) { + char* x = new char[5]; + char* y = new char[5]; + x[0] = 'a'; + x[2] = 'b'; + EXPECT_UMR(memccpy(y, x, 'b', 5)); + delete[] x; + delete[] y; +} + +TEST(MemorySanitizer, bcopy) { + char* x = new char[2]; + char* y = new char[2]; + x[0] = 1; + x[1] = *GetPoisoned<char>(); + bcopy(x, y, 2); + EXPECT_NOT_POISONED(y[0]); + EXPECT_POISONED(y[1]); +} + +TEST(MemorySanitizer, strdup) { + char buf[4] = "abc"; + __msan_poison(buf + 2, sizeof(*buf)); + char *x = strdup(buf); + EXPECT_NOT_POISONED(x[0]); + EXPECT_NOT_POISONED(x[1]); + EXPECT_POISONED(x[2]); + EXPECT_NOT_POISONED(x[3]); + free(x); +} + +TEST(MemorySanitizer, strndup) { + char buf[4] = "abc"; + __msan_poison(buf + 2, sizeof(*buf)); + char *x; + EXPECT_UMR(x = strndup(buf, 3)); + EXPECT_NOT_POISONED(x[0]); + EXPECT_NOT_POISONED(x[1]); + EXPECT_POISONED(x[2]); + EXPECT_NOT_POISONED(x[3]); + free(x); + // Check handling of non 0 terminated strings. + buf[3] = 'z'; + __msan_poison(buf + 3, sizeof(*buf)); + EXPECT_UMR(x = strndup(buf + 3, 1)); + EXPECT_POISONED(x[0]); + EXPECT_NOT_POISONED(x[1]); + free(x); +} + +TEST(MemorySanitizer, strndup_short) { + char buf[4] = "abc"; + __msan_poison(buf + 1, sizeof(*buf)); + __msan_poison(buf + 2, sizeof(*buf)); + char *x; + EXPECT_UMR(x = strndup(buf, 2)); + EXPECT_NOT_POISONED(x[0]); + EXPECT_POISONED(x[1]); + EXPECT_NOT_POISONED(x[2]); + free(x); +} + + +template<class T, int size> +void TestOverlapMemmove() { + T *x = new T[size]; + ASSERT_GE(size, 3); + x[2] = 0; + memmove(x, x + 1, (size - 1) * sizeof(T)); + EXPECT_NOT_POISONED(x[1]); + EXPECT_POISONED(x[0]); + EXPECT_POISONED(x[2]); + delete [] x; +} + +TEST(MemorySanitizer, overlap_memmove) { + TestOverlapMemmove<U1, 10>(); + TestOverlapMemmove<U1, 1000>(); + TestOverlapMemmove<U8, 4>(); + TestOverlapMemmove<U8, 1000>(); +} + +TEST(MemorySanitizer, strcpy) { // NOLINT + char* x = new char[3]; + char* y = new char[3]; + x[0] = 'a'; + x[1] = *GetPoisoned<char>(1, 1); + x[2] = 0; + strcpy(y, x); // NOLINT + EXPECT_NOT_POISONED(y[0]); + EXPECT_POISONED(y[1]); + EXPECT_NOT_POISONED(y[2]); +} + +TEST(MemorySanitizer, strncpy) { // NOLINT + char* x = new char[3]; + char* y = new char[5]; + x[0] = 'a'; + x[1] = *GetPoisoned<char>(1, 1); + x[2] = '\0'; + strncpy(y, x, 4); // NOLINT + EXPECT_NOT_POISONED(y[0]); + EXPECT_POISONED(y[1]); + EXPECT_NOT_POISONED(y[2]); + EXPECT_NOT_POISONED(y[3]); + EXPECT_POISONED(y[4]); +} + +TEST(MemorySanitizer, stpcpy) { // NOLINT + char* x = new char[3]; + char* y = new char[3]; + x[0] = 'a'; + x[1] = *GetPoisoned<char>(1, 1); + x[2] = 0; + char *res = stpcpy(y, x); // NOLINT + ASSERT_EQ(res, y + 2); + EXPECT_NOT_POISONED(y[0]); + EXPECT_POISONED(y[1]); + EXPECT_NOT_POISONED(y[2]); +} + +TEST(MemorySanitizer, strcat) { // NOLINT + char a[10]; + char b[] = "def"; + strcpy(a, "abc"); + __msan_poison(b + 1, 1); + strcat(a, b); + EXPECT_NOT_POISONED(a[3]); + EXPECT_POISONED(a[4]); + EXPECT_NOT_POISONED(a[5]); + EXPECT_NOT_POISONED(a[6]); + EXPECT_POISONED(a[7]); +} + +TEST(MemorySanitizer, strncat) { // NOLINT + char a[10]; + char b[] = "def"; + strcpy(a, "abc"); + __msan_poison(b + 1, 1); + strncat(a, b, 5); + EXPECT_NOT_POISONED(a[3]); + EXPECT_POISONED(a[4]); + EXPECT_NOT_POISONED(a[5]); + EXPECT_NOT_POISONED(a[6]); + EXPECT_POISONED(a[7]); +} + +TEST(MemorySanitizer, strncat_overflow) { // NOLINT + char a[10]; + char b[] = "def"; + strcpy(a, "abc"); + __msan_poison(b + 1, 1); + strncat(a, b, 2); + EXPECT_NOT_POISONED(a[3]); + EXPECT_POISONED(a[4]); + EXPECT_NOT_POISONED(a[5]); + EXPECT_POISONED(a[6]); + EXPECT_POISONED(a[7]); +} + +TEST(MemorySanitizer, wcscat) { + wchar_t a[10]; + wchar_t b[] = L"def"; + wcscpy(a, L"abc"); + + wcscat(a, b); + EXPECT_EQ(6U, wcslen(a)); + EXPECT_POISONED(a[7]); + + a[3] = 0; + __msan_poison(b + 1, sizeof(wchar_t)); + EXPECT_UMR(wcscat(a, b)); + + __msan_unpoison(b + 1, sizeof(wchar_t)); + __msan_poison(a + 2, sizeof(wchar_t)); + EXPECT_UMR(wcscat(a, b)); +} + +TEST(MemorySanitizer, wcsncat) { + wchar_t a[10]; + wchar_t b[] = L"def"; + wcscpy(a, L"abc"); + + wcsncat(a, b, 5); + EXPECT_EQ(6U, wcslen(a)); + EXPECT_POISONED(a[7]); + + a[3] = 0; + __msan_poison(a + 4, sizeof(wchar_t) * 6); + wcsncat(a, b, 2); + EXPECT_EQ(5U, wcslen(a)); + EXPECT_POISONED(a[6]); + + a[3] = 0; + __msan_poison(b + 1, sizeof(wchar_t)); + EXPECT_UMR(wcsncat(a, b, 2)); + + __msan_unpoison(b + 1, sizeof(wchar_t)); + __msan_poison(a + 2, sizeof(wchar_t)); + EXPECT_UMR(wcsncat(a, b, 2)); +} + +#define TEST_STRTO_INT(func_name, char_type, str_prefix) \ + TEST(MemorySanitizer, func_name) { \ + char_type *e; \ + EXPECT_EQ(1U, func_name(str_prefix##"1", &e, 10)); \ + EXPECT_NOT_POISONED((S8)e); \ + } + +#define TEST_STRTO_FLOAT(func_name, char_type, str_prefix) \ + TEST(MemorySanitizer, func_name) { \ + char_type *e; \ + EXPECT_NE(0, func_name(str_prefix##"1.5", &e)); \ + EXPECT_NOT_POISONED((S8)e); \ + } + +#define TEST_STRTO_FLOAT_LOC(func_name, char_type, str_prefix) \ + TEST(MemorySanitizer, func_name) { \ + locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \ + char_type *e; \ + EXPECT_NE(0, func_name(str_prefix##"1.5", &e, loc)); \ + EXPECT_NOT_POISONED((S8)e); \ + freelocale(loc); \ + } + +#define TEST_STRTO_INT_LOC(func_name, char_type, str_prefix) \ + TEST(MemorySanitizer, func_name) { \ + locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \ + char_type *e; \ + ASSERT_EQ(1U, func_name(str_prefix##"1", &e, 10, loc)); \ + EXPECT_NOT_POISONED((S8)e); \ + freelocale(loc); \ + } + +TEST_STRTO_INT(strtol, char, ) +TEST_STRTO_INT(strtoll, char, ) +TEST_STRTO_INT(strtoul, char, ) +TEST_STRTO_INT(strtoull, char, ) +TEST_STRTO_INT(strtouq, char, ) + +TEST_STRTO_FLOAT(strtof, char, ) +TEST_STRTO_FLOAT(strtod, char, ) +TEST_STRTO_FLOAT(strtold, char, ) + +TEST_STRTO_FLOAT_LOC(strtof_l, char, ) +TEST_STRTO_FLOAT_LOC(strtod_l, char, ) +TEST_STRTO_FLOAT_LOC(strtold_l, char, ) + +TEST_STRTO_INT_LOC(strtol_l, char, ) +TEST_STRTO_INT_LOC(strtoll_l, char, ) +TEST_STRTO_INT_LOC(strtoul_l, char, ) +TEST_STRTO_INT_LOC(strtoull_l, char, ) + +TEST_STRTO_INT(wcstol, wchar_t, L) +TEST_STRTO_INT(wcstoll, wchar_t, L) +TEST_STRTO_INT(wcstoul, wchar_t, L) +TEST_STRTO_INT(wcstoull, wchar_t, L) + +TEST_STRTO_FLOAT(wcstof, wchar_t, L) +TEST_STRTO_FLOAT(wcstod, wchar_t, L) +TEST_STRTO_FLOAT(wcstold, wchar_t, L) + +TEST_STRTO_FLOAT_LOC(wcstof_l, wchar_t, L) +TEST_STRTO_FLOAT_LOC(wcstod_l, wchar_t, L) +TEST_STRTO_FLOAT_LOC(wcstold_l, wchar_t, L) + +TEST_STRTO_INT_LOC(wcstol_l, wchar_t, L) +TEST_STRTO_INT_LOC(wcstoll_l, wchar_t, L) +TEST_STRTO_INT_LOC(wcstoul_l, wchar_t, L) +TEST_STRTO_INT_LOC(wcstoull_l, wchar_t, L) + + +TEST(MemorySanitizer, strtoimax) { + char *e; + ASSERT_EQ(1, strtoimax("1", &e, 10)); + EXPECT_NOT_POISONED((S8) e); +} + +TEST(MemorySanitizer, strtoumax) { + char *e; + ASSERT_EQ(1U, strtoumax("1", &e, 10)); + EXPECT_NOT_POISONED((S8) e); +} + +#ifdef __GLIBC__ +extern "C" float __strtof_l(const char *nptr, char **endptr, locale_t loc); +TEST_STRTO_FLOAT_LOC(__strtof_l, char, ) +extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc); +TEST_STRTO_FLOAT_LOC(__strtod_l, char, ) +extern "C" long double __strtold_l(const char *nptr, char **endptr, + locale_t loc); +TEST_STRTO_FLOAT_LOC(__strtold_l, char, ) + +extern "C" float __wcstof_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc); +TEST_STRTO_FLOAT_LOC(__wcstof_l, wchar_t, L) +extern "C" double __wcstod_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc); +TEST_STRTO_FLOAT_LOC(__wcstod_l, wchar_t, L) +extern "C" long double __wcstold_l(const wchar_t *nptr, wchar_t **endptr, + locale_t loc); +TEST_STRTO_FLOAT_LOC(__wcstold_l, wchar_t, L) +#endif // __GLIBC__ + +TEST(MemorySanitizer, modf) { + double x, y; + x = modf(2.1, &y); + EXPECT_NOT_POISONED(y); +} + +TEST(MemorySanitizer, modff) { + float x, y; + x = modff(2.1, &y); + EXPECT_NOT_POISONED(y); +} + +TEST(MemorySanitizer, modfl) { + long double x, y; + x = modfl(2.1, &y); + EXPECT_NOT_POISONED(y); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, sincos) { + double s, c; + sincos(0.2, &s, &c); + EXPECT_NOT_POISONED(s); + EXPECT_NOT_POISONED(c); +} +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, sincosf) { + float s, c; + sincosf(0.2, &s, &c); + EXPECT_NOT_POISONED(s); + EXPECT_NOT_POISONED(c); +} +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, sincosl) { + long double s, c; + sincosl(0.2, &s, &c); + EXPECT_NOT_POISONED(s); + EXPECT_NOT_POISONED(c); +} +#endif + +TEST(MemorySanitizer, remquo) { + int quo; + double res = remquo(29.0, 3.0, &quo); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(quo); +} + +TEST(MemorySanitizer, remquof) { + int quo; + float res = remquof(29.0, 3.0, &quo); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(quo); +} + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, remquol) { + int quo; + long double res = remquof(29.0, 3.0, &quo); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(quo); +} +#endif + +TEST(MemorySanitizer, lgamma) { + double res = lgamma(1.1); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(signgam); +} + +TEST(MemorySanitizer, lgammaf) { + float res = lgammaf(1.1); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(signgam); +} + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, lgammal) { + long double res = lgammal(1.1); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(signgam); +} +#endif + +TEST(MemorySanitizer, lgamma_r) { + int sgn; + double res = lgamma_r(1.1, &sgn); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(sgn); +} + +TEST(MemorySanitizer, lgammaf_r) { + int sgn; + float res = lgammaf_r(1.1, &sgn); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(sgn); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, lgammal_r) { + int sgn; + long double res = lgammal_r(1.1, &sgn); + ASSERT_NE(0.0, res); + EXPECT_NOT_POISONED(sgn); +} +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, drand48_r) { + struct drand48_data buf; + srand48_r(0, &buf); + double d; + drand48_r(&buf, &d); + EXPECT_NOT_POISONED(d); +} +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, lrand48_r) { + struct drand48_data buf; + srand48_r(0, &buf); + long d; + lrand48_r(&buf, &d); + EXPECT_NOT_POISONED(d); +} +#endif + +TEST(MemorySanitizer, sprintf) { // NOLINT + char buff[10]; + break_optimization(buff); + EXPECT_POISONED(buff[0]); + int res = sprintf(buff, "%d", 1234567); // NOLINT + ASSERT_EQ(res, 7); + ASSERT_EQ(buff[0], '1'); + ASSERT_EQ(buff[1], '2'); + ASSERT_EQ(buff[2], '3'); + ASSERT_EQ(buff[6], '7'); + ASSERT_EQ(buff[7], 0); + EXPECT_POISONED(buff[8]); +} + +TEST(MemorySanitizer, snprintf) { + char buff[10]; + break_optimization(buff); + EXPECT_POISONED(buff[0]); + int res = snprintf(buff, sizeof(buff), "%d", 1234567); + ASSERT_EQ(res, 7); + ASSERT_EQ(buff[0], '1'); + ASSERT_EQ(buff[1], '2'); + ASSERT_EQ(buff[2], '3'); + ASSERT_EQ(buff[6], '7'); + ASSERT_EQ(buff[7], 0); + EXPECT_POISONED(buff[8]); +} + +TEST(MemorySanitizer, swprintf) { + wchar_t buff[10]; + ASSERT_EQ(4U, sizeof(wchar_t)); + break_optimization(buff); + EXPECT_POISONED(buff[0]); + int res = swprintf(buff, 9, L"%d", 1234567); + ASSERT_EQ(res, 7); + ASSERT_EQ(buff[0], '1'); + ASSERT_EQ(buff[1], '2'); + ASSERT_EQ(buff[2], '3'); + ASSERT_EQ(buff[6], '7'); + ASSERT_EQ(buff[7], L'\0'); + EXPECT_POISONED(buff[8]); +} + +TEST(MemorySanitizer, asprintf) { // NOLINT + char *pbuf; + EXPECT_POISONED(pbuf); + int res = asprintf(&pbuf, "%d", 1234567); // NOLINT + ASSERT_EQ(res, 7); + EXPECT_NOT_POISONED(pbuf); + ASSERT_EQ(pbuf[0], '1'); + ASSERT_EQ(pbuf[1], '2'); + ASSERT_EQ(pbuf[2], '3'); + ASSERT_EQ(pbuf[6], '7'); + ASSERT_EQ(pbuf[7], 0); + free(pbuf); +} + +TEST(MemorySanitizer, mbstowcs) { + const char *x = "abc"; + wchar_t buff[10]; + int res = mbstowcs(buff, x, 2); + EXPECT_EQ(2, res); + EXPECT_EQ(L'a', buff[0]); + EXPECT_EQ(L'b', buff[1]); + EXPECT_POISONED(buff[2]); + res = mbstowcs(buff, x, 10); + EXPECT_EQ(3, res); + EXPECT_NOT_POISONED(buff[3]); +} + +TEST(MemorySanitizer, wcstombs) { + const wchar_t *x = L"abc"; + char buff[10]; + int res = wcstombs(buff, x, 4); + EXPECT_EQ(res, 3); + EXPECT_EQ(buff[0], 'a'); + EXPECT_EQ(buff[1], 'b'); + EXPECT_EQ(buff[2], 'c'); +} + +TEST(MemorySanitizer, wcsrtombs) { + const wchar_t *x = L"abc"; + const wchar_t *p = x; + char buff[10]; + mbstate_t mbs; + memset(&mbs, 0, sizeof(mbs)); + int res = wcsrtombs(buff, &p, 4, &mbs); + EXPECT_EQ(res, 3); + EXPECT_EQ(buff[0], 'a'); + EXPECT_EQ(buff[1], 'b'); + EXPECT_EQ(buff[2], 'c'); + EXPECT_EQ(buff[3], '\0'); + EXPECT_POISONED(buff[4]); +} + +TEST(MemorySanitizer, wcsnrtombs) { + const wchar_t *x = L"abc"; + const wchar_t *p = x; + char buff[10]; + mbstate_t mbs; + memset(&mbs, 0, sizeof(mbs)); + int res = wcsnrtombs(buff, &p, 2, 4, &mbs); + EXPECT_EQ(res, 2); + EXPECT_EQ(buff[0], 'a'); + EXPECT_EQ(buff[1], 'b'); + EXPECT_POISONED(buff[2]); +} + +TEST(MemorySanitizer, wcrtomb) { + wchar_t x = L'a'; + char buff[10]; + mbstate_t mbs; + memset(&mbs, 0, sizeof(mbs)); + size_t res = wcrtomb(buff, x, &mbs); + EXPECT_EQ(res, (size_t)1); + EXPECT_EQ(buff[0], 'a'); +} + +TEST(MemorySanitizer, wctomb) { + wchar_t x = L'a'; + char buff[10]; + wctomb(nullptr, x); + int res = wctomb(buff, x); + EXPECT_EQ(res, 1); + EXPECT_EQ(buff[0], 'a'); + EXPECT_POISONED(buff[1]); +} + +TEST(MemorySanitizer, wmemset) { + wchar_t x[25]; + break_optimization(x); + EXPECT_POISONED(x[0]); + wmemset(x, L'A', 10); + EXPECT_EQ(x[0], L'A'); + EXPECT_EQ(x[9], L'A'); + EXPECT_POISONED(x[10]); +} + +TEST(MemorySanitizer, mbtowc) { + const char *x = "abc"; + wchar_t wx; + int res = mbtowc(&wx, x, 3); + EXPECT_GT(res, 0); + EXPECT_NOT_POISONED(wx); +} + +TEST(MemorySanitizer, mbrtowc) { + mbstate_t mbs = {}; + + wchar_t wc; + size_t res = mbrtowc(&wc, "\377", 1, &mbs); + EXPECT_EQ(res, -1ULL); + + res = mbrtowc(&wc, "abc", 3, &mbs); + EXPECT_GT(res, 0ULL); + EXPECT_NOT_POISONED(wc); +} + +TEST(MemorySanitizer, wcsftime) { + wchar_t x[100]; + time_t t = time(NULL); + struct tm tms; + struct tm *tmres = localtime_r(&t, &tms); + ASSERT_NE((void *)0, tmres); + size_t res = wcsftime(x, sizeof(x) / sizeof(x[0]), L"%Y-%m-%d", tmres); + EXPECT_GT(res, 0UL); + EXPECT_EQ(res, wcslen(x)); +} + +TEST(MemorySanitizer, gettimeofday) { + struct timeval tv; + struct timezone tz; + break_optimization(&tv); + break_optimization(&tz); + ASSERT_EQ(16U, sizeof(tv)); + ASSERT_EQ(8U, sizeof(tz)); + EXPECT_POISONED(tv.tv_sec); + EXPECT_POISONED(tv.tv_usec); + EXPECT_POISONED(tz.tz_minuteswest); + EXPECT_POISONED(tz.tz_dsttime); + ASSERT_EQ(0, gettimeofday(&tv, &tz)); + EXPECT_NOT_POISONED(tv.tv_sec); + EXPECT_NOT_POISONED(tv.tv_usec); + EXPECT_NOT_POISONED(tz.tz_minuteswest); + EXPECT_NOT_POISONED(tz.tz_dsttime); +} + +TEST(MemorySanitizer, clock_gettime) { + struct timespec tp; + EXPECT_POISONED(tp.tv_sec); + EXPECT_POISONED(tp.tv_nsec); + ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &tp)); + EXPECT_NOT_POISONED(tp.tv_sec); + EXPECT_NOT_POISONED(tp.tv_nsec); +} + +TEST(MemorySanitizer, clock_getres) { + struct timespec tp; + EXPECT_POISONED(tp.tv_sec); + EXPECT_POISONED(tp.tv_nsec); + ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, 0)); + EXPECT_POISONED(tp.tv_sec); + EXPECT_POISONED(tp.tv_nsec); + ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, &tp)); + EXPECT_NOT_POISONED(tp.tv_sec); + EXPECT_NOT_POISONED(tp.tv_nsec); +} + +TEST(MemorySanitizer, getitimer) { + struct itimerval it1, it2; + int res; + EXPECT_POISONED(it1.it_interval.tv_sec); + EXPECT_POISONED(it1.it_interval.tv_usec); + EXPECT_POISONED(it1.it_value.tv_sec); + EXPECT_POISONED(it1.it_value.tv_usec); + res = getitimer(ITIMER_VIRTUAL, &it1); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(it1.it_interval.tv_sec); + EXPECT_NOT_POISONED(it1.it_interval.tv_usec); + EXPECT_NOT_POISONED(it1.it_value.tv_sec); + EXPECT_NOT_POISONED(it1.it_value.tv_usec); + + it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000; + it1.it_interval.tv_usec = it1.it_value.tv_usec = 0; + + res = setitimer(ITIMER_VIRTUAL, &it1, &it2); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(it2.it_interval.tv_sec); + EXPECT_NOT_POISONED(it2.it_interval.tv_usec); + EXPECT_NOT_POISONED(it2.it_value.tv_sec); + EXPECT_NOT_POISONED(it2.it_value.tv_usec); + + // Check that old_value can be 0, and disable the timer. + memset(&it1, 0, sizeof(it1)); + res = setitimer(ITIMER_VIRTUAL, &it1, 0); + ASSERT_EQ(0, res); +} + +TEST(MemorySanitizer, setitimer_null) { + setitimer(ITIMER_VIRTUAL, 0, 0); + // Not testing the return value, since it the behaviour seems to differ + // between libc implementations and POSIX. + // Should never crash, though. +} + +TEST(MemorySanitizer, time) { + time_t t; + EXPECT_POISONED(t); + time_t t2 = time(&t); + ASSERT_NE(t2, (time_t)-1); + EXPECT_NOT_POISONED(t); +} + +TEST(MemorySanitizer, strptime) { + struct tm time; + char *p = strptime("11/1/2013-05:39", "%m/%d/%Y-%H:%M", &time); + ASSERT_TRUE(p != NULL); + EXPECT_NOT_POISONED(time.tm_sec); + EXPECT_NOT_POISONED(time.tm_hour); + EXPECT_NOT_POISONED(time.tm_year); +} + +TEST(MemorySanitizer, localtime) { + time_t t = 123; + struct tm *time = localtime(&t); + ASSERT_TRUE(time != NULL); + EXPECT_NOT_POISONED(time->tm_sec); + EXPECT_NOT_POISONED(time->tm_hour); + EXPECT_NOT_POISONED(time->tm_year); + EXPECT_NOT_POISONED(time->tm_isdst); + EXPECT_NE(0U, strlen(time->tm_zone)); +} + +TEST(MemorySanitizer, localtime_r) { + time_t t = 123; + struct tm time; + struct tm *res = localtime_r(&t, &time); + ASSERT_TRUE(res != NULL); + EXPECT_NOT_POISONED(time.tm_sec); + EXPECT_NOT_POISONED(time.tm_hour); + EXPECT_NOT_POISONED(time.tm_year); + EXPECT_NOT_POISONED(time.tm_isdst); + EXPECT_NE(0U, strlen(time.tm_zone)); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +/* Creates a temporary file with contents similar to /etc/fstab to be used + with getmntent{_r}. */ +class TempFstabFile { + public: + TempFstabFile() : fd (-1) { } + ~TempFstabFile() { + if (fd >= 0) + close (fd); + } + + bool Create(void) { + snprintf(tmpfile, sizeof(tmpfile), "/tmp/msan.getmntent.tmp.XXXXXX"); + + fd = mkstemp(tmpfile); + if (fd == -1) + return false; + + const char entry[] = "/dev/root / ext4 errors=remount-ro 0 1"; + size_t entrylen = sizeof(entry); + + size_t bytesWritten = write(fd, entry, entrylen); + if (entrylen != bytesWritten) + return false; + + return true; + } + + const char* FileName(void) { + return tmpfile; + } + + private: + char tmpfile[128]; + int fd; +}; +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, getmntent) { + TempFstabFile fstabtmp; + ASSERT_TRUE(fstabtmp.Create()); + FILE *fp = setmntent(fstabtmp.FileName(), "r"); + + struct mntent *mnt = getmntent(fp); + ASSERT_TRUE(mnt != NULL); + ASSERT_NE(0U, strlen(mnt->mnt_fsname)); + ASSERT_NE(0U, strlen(mnt->mnt_dir)); + ASSERT_NE(0U, strlen(mnt->mnt_type)); + ASSERT_NE(0U, strlen(mnt->mnt_opts)); + EXPECT_NOT_POISONED(mnt->mnt_freq); + EXPECT_NOT_POISONED(mnt->mnt_passno); + fclose(fp); +} +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, getmntent_r) { + TempFstabFile fstabtmp; + ASSERT_TRUE(fstabtmp.Create()); + FILE *fp = setmntent(fstabtmp.FileName(), "r"); + + struct mntent mntbuf; + char buf[1000]; + struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf)); + ASSERT_TRUE(mnt != NULL); + ASSERT_NE(0U, strlen(mnt->mnt_fsname)); + ASSERT_NE(0U, strlen(mnt->mnt_dir)); + ASSERT_NE(0U, strlen(mnt->mnt_type)); + ASSERT_NE(0U, strlen(mnt->mnt_opts)); + EXPECT_NOT_POISONED(mnt->mnt_freq); + EXPECT_NOT_POISONED(mnt->mnt_passno); + fclose(fp); +} +#endif + +#if !defined(__NetBSD__) +TEST(MemorySanitizer, ether) { + const char *asc = "11:22:33:44:55:66"; + struct ether_addr *paddr = ether_aton(asc); + EXPECT_NOT_POISONED(*paddr); + + struct ether_addr addr; + paddr = ether_aton_r(asc, &addr); + ASSERT_EQ(paddr, &addr); + EXPECT_NOT_POISONED(addr); + + char *s = ether_ntoa(&addr); + ASSERT_NE(0U, strlen(s)); + + char buf[100]; + s = ether_ntoa_r(&addr, buf); + ASSERT_EQ(s, buf); + ASSERT_NE(0U, strlen(buf)); +} +#endif + +TEST(MemorySanitizer, mmap) { + const int size = 4096; + void *p1, *p2; + p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); + __msan_poison(p1, size); + munmap(p1, size); + for (int i = 0; i < 1000; i++) { + p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); + if (p2 == p1) + break; + else + munmap(p2, size); + } + if (p1 == p2) { + EXPECT_NOT_POISONED(*(char*)p2); + munmap(p2, size); + } +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +// FIXME: enable and add ecvt. +// FIXME: check why msandr does nt handle fcvt. +TEST(MemorySanitizer, fcvt) { + int a, b; + break_optimization(&a); + break_optimization(&b); + EXPECT_POISONED(a); + EXPECT_POISONED(b); + char *str = fcvt(12345.6789, 10, &a, &b); + EXPECT_NOT_POISONED(a); + EXPECT_NOT_POISONED(b); + ASSERT_NE(nullptr, str); + EXPECT_NOT_POISONED(str[0]); + ASSERT_NE(0U, strlen(str)); +} +#endif + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, fcvt_long) { + int a, b; + break_optimization(&a); + break_optimization(&b); + EXPECT_POISONED(a); + EXPECT_POISONED(b); + char *str = fcvt(111111112345.6789, 10, &a, &b); + EXPECT_NOT_POISONED(a); + EXPECT_NOT_POISONED(b); + ASSERT_NE(nullptr, str); + EXPECT_NOT_POISONED(str[0]); + ASSERT_NE(0U, strlen(str)); +} +#endif + +TEST(MemorySanitizer, memchr) { + char x[10]; + break_optimization(x); + EXPECT_POISONED(x[0]); + x[2] = '2'; + void *res; + EXPECT_UMR(res = memchr(x, '2', 10)); + EXPECT_NOT_POISONED(res); + x[0] = '0'; + x[1] = '1'; + res = memchr(x, '2', 10); + EXPECT_EQ(&x[2], res); + EXPECT_UMR(res = memchr(x, '3', 10)); + EXPECT_NOT_POISONED(res); +} + +TEST(MemorySanitizer, memrchr) { + char x[10]; + break_optimization(x); + EXPECT_POISONED(x[0]); + x[9] = '9'; + void *res; + EXPECT_UMR(res = memrchr(x, '9', 10)); + EXPECT_NOT_POISONED(res); + x[0] = '0'; + x[1] = '1'; + res = memrchr(x, '0', 2); + EXPECT_EQ(&x[0], res); + EXPECT_UMR(res = memrchr(x, '7', 10)); + EXPECT_NOT_POISONED(res); +} + +TEST(MemorySanitizer, frexp) { + int x; + x = *GetPoisoned<int>(); + double r = frexp(1.1, &x); + EXPECT_NOT_POISONED(r); + EXPECT_NOT_POISONED(x); + + x = *GetPoisoned<int>(); + float rf = frexpf(1.1, &x); + EXPECT_NOT_POISONED(rf); + EXPECT_NOT_POISONED(x); + + x = *GetPoisoned<int>(); + double rl = frexpl(1.1, &x); + EXPECT_NOT_POISONED(rl); + EXPECT_NOT_POISONED(x); +} + +namespace { + +static int cnt; + +void SigactionHandler(int signo, siginfo_t* si, void* uc) { + ASSERT_EQ(signo, SIGPROF); + ASSERT_TRUE(si != NULL); + EXPECT_NOT_POISONED(si->si_errno); + EXPECT_NOT_POISONED(si->si_pid); +#ifdef _UC_MACHINE_PC + EXPECT_NOT_POISONED(_UC_MACHINE_PC((ucontext_t*)uc)); +#else +# if __linux__ +# if defined(__x86_64__) + EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]); +# elif defined(__i386__) + EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]); +# endif +# endif +#endif + ++cnt; +} + +TEST(MemorySanitizer, sigaction) { + struct sigaction act = {}; + struct sigaction oldact = {}; + struct sigaction origact = {}; + + sigaction(SIGPROF, 0, &origact); + + act.sa_flags |= SA_SIGINFO; + act.sa_sigaction = &SigactionHandler; + sigaction(SIGPROF, &act, 0); + + kill(getpid(), SIGPROF); + + act.sa_flags &= ~SA_SIGINFO; + act.sa_handler = SIG_DFL; + sigaction(SIGPROF, &act, 0); + + act.sa_flags &= ~SA_SIGINFO; + act.sa_handler = SIG_IGN; + sigaction(SIGPROF, &act, &oldact); + EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); + EXPECT_EQ(SIG_DFL, oldact.sa_handler); + kill(getpid(), SIGPROF); + + act.sa_flags |= SA_SIGINFO; + act.sa_sigaction = &SigactionHandler; + sigaction(SIGPROF, &act, &oldact); + EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO); + EXPECT_EQ(SIG_IGN, oldact.sa_handler); + kill(getpid(), SIGPROF); + + act.sa_flags &= ~SA_SIGINFO; + act.sa_handler = SIG_DFL; + sigaction(SIGPROF, &act, &oldact); + EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO); + EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction); + EXPECT_EQ(2, cnt); + + sigaction(SIGPROF, &origact, 0); +} + +} // namespace + + +TEST(MemorySanitizer, sigemptyset) { + sigset_t s; + EXPECT_POISONED(s); + int res = sigemptyset(&s); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(s); +} + +TEST(MemorySanitizer, sigfillset) { + sigset_t s; + EXPECT_POISONED(s); + int res = sigfillset(&s); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(s); +} + +TEST(MemorySanitizer, sigpending) { + sigset_t s; + EXPECT_POISONED(s); + int res = sigpending(&s); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(s); +} + +TEST(MemorySanitizer, sigprocmask) { + sigset_t s; + EXPECT_POISONED(s); + int res = sigprocmask(SIG_BLOCK, 0, &s); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(s); +} + +TEST(MemorySanitizer, pthread_sigmask) { + sigset_t s; + EXPECT_POISONED(s); + int res = pthread_sigmask(SIG_BLOCK, 0, &s); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(s); +} + +struct StructWithDtor { + ~StructWithDtor(); +}; + +NOINLINE StructWithDtor::~StructWithDtor() { + break_optimization(0); +} + +TEST(MemorySanitizer, Invoke) { + StructWithDtor s; // Will cause the calls to become invokes. + EXPECT_NOT_POISONED(0); + EXPECT_POISONED(*GetPoisoned<int>()); + EXPECT_NOT_POISONED(0); + EXPECT_POISONED(*GetPoisoned<int>()); + EXPECT_POISONED(ReturnPoisoned<S4>()); +} + +TEST(MemorySanitizer, ptrtoint) { + // Test that shadow is propagated through pointer-to-integer conversion. + unsigned char c = 0; + __msan_poison(&c, 1); + uintptr_t u = (uintptr_t)c << 8; + EXPECT_NOT_POISONED(u & 0xFF00FF); + EXPECT_POISONED(u & 0xFF00); + + break_optimization(&u); + void* p = (void*)u; + + break_optimization(&p); + EXPECT_POISONED(p); + EXPECT_NOT_POISONED(((uintptr_t)p) & 0xFF00FF); + EXPECT_POISONED(((uintptr_t)p) & 0xFF00); +} + +static void vaargsfn2(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, double)); + va_end(vl); +} + +static void vaargsfn(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + // The following call will overwrite __msan_param_tls. + // Checks after it test that arg shadow was somehow saved across the call. + vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>()); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgTest) { + int* x = GetPoisoned<int>(); + int* y = GetPoisoned<int>(4); + vaargsfn(1, 13, *x, 42, *y); +} + +static void vaargsfn_many(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgManyTest) { + int* x = GetPoisoned<int>(); + int* y = GetPoisoned<int>(4); + vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y); +} + +static void vaargsfn_manyfix(int g1, int g2, int g3, int g4, int g5, int g6, int g7, int g8, int g9, ...) { + va_list vl; + va_start(vl, g9); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgManyFixTest) { + int* x = GetPoisoned<int>(); + int* y = GetPoisoned<int>(); + vaargsfn_manyfix(1, *x, 3, 4, 5, 6, 7, 8, 9, 10, *y); +} + +static void vaargsfn_pass2(va_list vl) { + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); +} + +static void vaargsfn_pass(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_POISONED(va_arg(vl, int)); + vaargsfn_pass2(vl); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgPass) { + int* x = GetPoisoned<int>(); + int* y = GetPoisoned<int>(4); + vaargsfn_pass(1, *x, 2, 3, *y); +} + +static void vaargsfn_copy2(va_list vl) { + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); +} + +static void vaargsfn_copy(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + va_list vl2; + va_copy(vl2, vl); + vaargsfn_copy2(vl2); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgCopy) { + int* x = GetPoisoned<int>(); + int* y = GetPoisoned<int>(4); + vaargsfn_copy(1, 2, *x, 3, *y); +} + +static void vaargsfn_ptr(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_NOT_POISONED(va_arg(vl, int*)); + EXPECT_POISONED(va_arg(vl, int*)); + EXPECT_NOT_POISONED(va_arg(vl, int*)); + EXPECT_POISONED(va_arg(vl, double*)); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgPtr) { + int** x = GetPoisoned<int*>(); + double** y = GetPoisoned<double*>(8); + int z; + vaargsfn_ptr(1, &z, *x, &z, *y); +} + +static void vaargsfn_overflow(int guard, ...) { + va_list vl; + va_start(vl, guard); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, int)); + + EXPECT_NOT_POISONED(va_arg(vl, double)); + EXPECT_NOT_POISONED(va_arg(vl, double)); + EXPECT_NOT_POISONED(va_arg(vl, double)); + EXPECT_POISONED(va_arg(vl, double)); + EXPECT_NOT_POISONED(va_arg(vl, double)); + EXPECT_POISONED(va_arg(vl, int*)); + EXPECT_NOT_POISONED(va_arg(vl, double)); + EXPECT_NOT_POISONED(va_arg(vl, double)); + + EXPECT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, double)); + EXPECT_POISONED(va_arg(vl, int*)); + + EXPECT_NOT_POISONED(va_arg(vl, int)); + EXPECT_NOT_POISONED(va_arg(vl, double)); + EXPECT_NOT_POISONED(va_arg(vl, int*)); + + EXPECT_POISONED(va_arg(vl, int)); + EXPECT_POISONED(va_arg(vl, double)); + EXPECT_POISONED(va_arg(vl, int*)); + + va_end(vl); +} + +TEST(MemorySanitizer, VAArgOverflow) { + int* x = GetPoisoned<int>(); + double* y = GetPoisoned<double>(8); + int** p = GetPoisoned<int*>(16); + int z; + vaargsfn_overflow(1, + 1, 2, *x, 4, 5, 6, + 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8, + // the following args will overflow for sure + *x, *y, *p, + 7, 9.9, &z, + *x, *y, *p); +} + +static void vaargsfn_tlsoverwrite2(int guard, ...) { + va_list vl; + va_start(vl, guard); + for (int i = 0; i < 20; ++i) + EXPECT_NOT_POISONED(va_arg(vl, int)); + va_end(vl); +} + +static void vaargsfn_tlsoverwrite(int guard, ...) { + // This call will overwrite TLS contents unless it's backed up somewhere. + vaargsfn_tlsoverwrite2(2, + 42, 42, 42, 42, 42, + 42, 42, 42, 42, 42, + 42, 42, 42, 42, 42, + 42, 42, 42, 42, 42); // 20x + va_list vl; + va_start(vl, guard); + for (int i = 0; i < 20; ++i) + EXPECT_POISONED(va_arg(vl, int)); + va_end(vl); +} + +TEST(MemorySanitizer, VAArgTLSOverwrite) { + int* x = GetPoisoned<int>(); + vaargsfn_tlsoverwrite(1, + *x, *x, *x, *x, *x, + *x, *x, *x, *x, *x, + *x, *x, *x, *x, *x, + *x, *x, *x, *x, *x); // 20x + +} + +struct StructByVal { + int a, b, c, d, e, f; +}; + +static void vaargsfn_structbyval(int guard, ...) { + va_list vl; + va_start(vl, guard); + { + StructByVal s = va_arg(vl, StructByVal); + EXPECT_NOT_POISONED(s.a); + EXPECT_POISONED(s.b); + EXPECT_NOT_POISONED(s.c); + EXPECT_POISONED(s.d); + EXPECT_NOT_POISONED(s.e); + EXPECT_POISONED(s.f); + } + { + StructByVal s = va_arg(vl, StructByVal); + EXPECT_NOT_POISONED(s.a); + EXPECT_POISONED(s.b); + EXPECT_NOT_POISONED(s.c); + EXPECT_POISONED(s.d); + EXPECT_NOT_POISONED(s.e); + EXPECT_POISONED(s.f); + } + va_end(vl); +} + +TEST(MemorySanitizer, VAArgStructByVal) { + StructByVal s; + s.a = 1; + s.b = *GetPoisoned<int>(); + s.c = 2; + s.d = *GetPoisoned<int>(); + s.e = 3; + s.f = *GetPoisoned<int>(); + vaargsfn_structbyval(0, s, s); +} + +NOINLINE void StructByValTestFunc(struct StructByVal s) { + EXPECT_NOT_POISONED(s.a); + EXPECT_POISONED(s.b); + EXPECT_NOT_POISONED(s.c); + EXPECT_POISONED(s.d); + EXPECT_NOT_POISONED(s.e); + EXPECT_POISONED(s.f); +} + +NOINLINE void StructByValTestFunc1(struct StructByVal s) { + StructByValTestFunc(s); +} + +NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) { + StructByValTestFunc(s); +} + +TEST(MemorySanitizer, StructByVal) { + // Large aggregates are passed as "byval" pointer argument in LLVM. + struct StructByVal s; + s.a = 1; + s.b = *GetPoisoned<int>(); + s.c = 2; + s.d = *GetPoisoned<int>(); + s.e = 3; + s.f = *GetPoisoned<int>(); + StructByValTestFunc(s); + StructByValTestFunc1(s); + StructByValTestFunc2(0, s); +} + + +#if MSAN_HAS_M128 +NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); } +NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); } +TEST(MemorySanitizer, m128) { + __m128i a = _mm_set1_epi16(0x1234); + __m128i b = _mm_set1_epi16(0x7890); + EXPECT_NOT_POISONED(m128Eq(&a, &b)); + EXPECT_NOT_POISONED(m128Lt(&a, &b)); +} +// FIXME: add more tests for __m128i. +#endif // MSAN_HAS_M128 + +// We should not complain when copying this poisoned hole. +struct StructWithHole { + U4 a; + // 4-byte hole. + U8 b; +}; + +NOINLINE StructWithHole ReturnStructWithHole() { + StructWithHole res; + __msan_poison(&res, sizeof(res)); + res.a = 1; + res.b = 2; + return res; +} + +TEST(MemorySanitizer, StructWithHole) { + StructWithHole a = ReturnStructWithHole(); + break_optimization(&a); +} + +template <class T> +NOINLINE T ReturnStruct() { + T res; + __msan_poison(&res, sizeof(res)); + res.a = 1; + return res; +} + +template <class T> +NOINLINE void TestReturnStruct() { + T s1 = ReturnStruct<T>(); + EXPECT_NOT_POISONED(s1.a); + EXPECT_POISONED(s1.b); +} + +struct SSS1 { + int a, b, c; +}; +struct SSS2 { + int b, a, c; +}; +struct SSS3 { + int b, c, a; +}; +struct SSS4 { + int c, b, a; +}; + +struct SSS5 { + int a; + float b; +}; +struct SSS6 { + int a; + double b; +}; +struct SSS7 { + S8 b; + int a; +}; +struct SSS8 { + S2 b; + S8 a; +}; + +TEST(MemorySanitizer, IntStruct3) { + TestReturnStruct<SSS1>(); + TestReturnStruct<SSS2>(); + TestReturnStruct<SSS3>(); + TestReturnStruct<SSS4>(); + TestReturnStruct<SSS5>(); + TestReturnStruct<SSS6>(); + TestReturnStruct<SSS7>(); + TestReturnStruct<SSS8>(); +} + +struct LongStruct { + U1 a1, b1; + U2 a2, b2; + U4 a4, b4; + U8 a8, b8; +}; + +NOINLINE LongStruct ReturnLongStruct1() { + LongStruct res; + __msan_poison(&res, sizeof(res)); + res.a1 = res.a2 = res.a4 = res.a8 = 111; + // leaves b1, .., b8 poisoned. + return res; +} + +NOINLINE LongStruct ReturnLongStruct2() { + LongStruct res; + __msan_poison(&res, sizeof(res)); + res.b1 = res.b2 = res.b4 = res.b8 = 111; + // leaves a1, .., a8 poisoned. + return res; +} + +TEST(MemorySanitizer, LongStruct) { + LongStruct s1 = ReturnLongStruct1(); + __msan_print_shadow(&s1, sizeof(s1)); + EXPECT_NOT_POISONED(s1.a1); + EXPECT_NOT_POISONED(s1.a2); + EXPECT_NOT_POISONED(s1.a4); + EXPECT_NOT_POISONED(s1.a8); + + EXPECT_POISONED(s1.b1); + EXPECT_POISONED(s1.b2); + EXPECT_POISONED(s1.b4); + EXPECT_POISONED(s1.b8); + + LongStruct s2 = ReturnLongStruct2(); + __msan_print_shadow(&s2, sizeof(s2)); + EXPECT_NOT_POISONED(s2.b1); + EXPECT_NOT_POISONED(s2.b2); + EXPECT_NOT_POISONED(s2.b4); + EXPECT_NOT_POISONED(s2.b8); + + EXPECT_POISONED(s2.a1); + EXPECT_POISONED(s2.a2); + EXPECT_POISONED(s2.a4); + EXPECT_POISONED(s2.a8); +} + +#if defined(__FreeBSD__) || defined(__NetBSD__) +#define MSAN_TEST_PRLIMIT 0 +#elif defined(__GLIBC__) +#define MSAN_TEST_PRLIMIT __GLIBC_PREREQ(2, 13) +#else +#define MSAN_TEST_PRLIMIT 1 +#endif + +TEST(MemorySanitizer, getrlimit) { + struct rlimit limit; + __msan_poison(&limit, sizeof(limit)); + int result = getrlimit(RLIMIT_DATA, &limit); + ASSERT_EQ(result, 0); + EXPECT_NOT_POISONED(limit.rlim_cur); + EXPECT_NOT_POISONED(limit.rlim_max); + +#if MSAN_TEST_PRLIMIT + struct rlimit limit2; + __msan_poison(&limit2, sizeof(limit2)); + result = prlimit(getpid(), RLIMIT_DATA, &limit, &limit2); + ASSERT_EQ(result, 0); + EXPECT_NOT_POISONED(limit2.rlim_cur); + EXPECT_NOT_POISONED(limit2.rlim_max); + + __msan_poison(&limit, sizeof(limit)); + result = prlimit(getpid(), RLIMIT_DATA, nullptr, &limit); + ASSERT_EQ(result, 0); + EXPECT_NOT_POISONED(limit.rlim_cur); + EXPECT_NOT_POISONED(limit.rlim_max); + + result = prlimit(getpid(), RLIMIT_DATA, &limit, nullptr); + ASSERT_EQ(result, 0); +#endif +} + +TEST(MemorySanitizer, getrusage) { + struct rusage usage; + __msan_poison(&usage, sizeof(usage)); + int result = getrusage(RUSAGE_SELF, &usage); + ASSERT_EQ(result, 0); + EXPECT_NOT_POISONED(usage.ru_utime.tv_sec); + EXPECT_NOT_POISONED(usage.ru_utime.tv_usec); + EXPECT_NOT_POISONED(usage.ru_stime.tv_sec); + EXPECT_NOT_POISONED(usage.ru_stime.tv_usec); + EXPECT_NOT_POISONED(usage.ru_maxrss); + EXPECT_NOT_POISONED(usage.ru_minflt); + EXPECT_NOT_POISONED(usage.ru_majflt); + EXPECT_NOT_POISONED(usage.ru_inblock); + EXPECT_NOT_POISONED(usage.ru_oublock); + EXPECT_NOT_POISONED(usage.ru_nvcsw); + EXPECT_NOT_POISONED(usage.ru_nivcsw); +} + +#if defined(__FreeBSD__) || defined(__NetBSD__) +static void GetProgramPath(char *buf, size_t sz) { +#if defined(__FreeBSD__) + int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 }; +#elif defined(__NetBSD__) + int mib[4] = { CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME}; +#endif + int res = sysctl(mib, 4, buf, &sz, NULL, 0); + ASSERT_EQ(0, res); +} +#elif defined(__GLIBC__) +static void GetProgramPath(char *buf, size_t sz) { + extern char *program_invocation_name; + int res = snprintf(buf, sz, "%s", program_invocation_name); + ASSERT_GE(res, 0); + ASSERT_LT((size_t)res, sz); +} +#else +# error "TODO: port this" +#endif + +static void dladdr_testfn() {} + +TEST(MemorySanitizer, dladdr) { + Dl_info info; + __msan_poison(&info, sizeof(info)); + int result = dladdr((const void*)dladdr_testfn, &info); + ASSERT_NE(result, 0); + EXPECT_NOT_POISONED((unsigned long)info.dli_fname); + if (info.dli_fname) + EXPECT_NOT_POISONED(strlen(info.dli_fname)); + EXPECT_NOT_POISONED((unsigned long)info.dli_fbase); + EXPECT_NOT_POISONED((unsigned long)info.dli_sname); + if (info.dli_sname) + EXPECT_NOT_POISONED(strlen(info.dli_sname)); + EXPECT_NOT_POISONED((unsigned long)info.dli_saddr); +} + +#ifndef MSAN_TEST_DISABLE_DLOPEN + +static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) { + (*(int *)data)++; + EXPECT_NOT_POISONED(info->dlpi_addr); + EXPECT_NOT_POISONED(strlen(info->dlpi_name)); + EXPECT_NOT_POISONED(info->dlpi_phnum); + for (int i = 0; i < info->dlpi_phnum; ++i) + EXPECT_NOT_POISONED(info->dlpi_phdr[i]); + return 0; +} + +// Compute the path to our loadable DSO. We assume it's in the same +// directory. Only use string routines that we intercept so far to do this. +static void GetPathToLoadable(char *buf, size_t sz) { + char program_path[kMaxPathLength]; + GetProgramPath(program_path, sizeof(program_path)); + + const char *last_slash = strrchr(program_path, '/'); + ASSERT_NE(nullptr, last_slash); + size_t dir_len = (size_t)(last_slash - program_path); +#if defined(__x86_64__) + static const char basename[] = "libmsan_loadable.x86_64.so"; +#elif defined(__MIPSEB__) || defined(MIPSEB) + static const char basename[] = "libmsan_loadable.mips64.so"; +#elif defined(__mips64) + static const char basename[] = "libmsan_loadable.mips64el.so"; +#elif defined(__aarch64__) + static const char basename[] = "libmsan_loadable.aarch64.so"; +#elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + static const char basename[] = "libmsan_loadable.powerpc64.so"; +#elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + static const char basename[] = "libmsan_loadable.powerpc64le.so"; +#endif + int res = snprintf(buf, sz, "%.*s/%s", + (int)dir_len, program_path, basename); + ASSERT_GE(res, 0); + ASSERT_LT((size_t)res, sz); +} + +TEST(MemorySanitizer, dl_iterate_phdr) { + char path[kMaxPathLength]; + GetPathToLoadable(path, sizeof(path)); + + // Having at least one dlopen'ed library in the process makes this more + // entertaining. + void *lib = dlopen(path, RTLD_LAZY); + ASSERT_NE((void*)0, lib); + + int count = 0; + int result = dl_iterate_phdr(dl_phdr_callback, &count); + ASSERT_GT(count, 0); + + dlclose(lib); +} + +TEST(MemorySanitizer, dlopen) { + char path[kMaxPathLength]; + GetPathToLoadable(path, sizeof(path)); + + // We need to clear shadow for globals when doing dlopen. In order to test + // this, we have to poison the shadow for the DSO before we load it. In + // general this is difficult, but the loader tends to reload things in the + // same place, so we open, close, and then reopen. The global should always + // start out clean after dlopen. + for (int i = 0; i < 2; i++) { + void *lib = dlopen(path, RTLD_LAZY); + if (lib == NULL) { + printf("dlerror: %s\n", dlerror()); + ASSERT_TRUE(lib != NULL); + } + void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global"); + ASSERT_TRUE(get_dso_global != NULL); + void **dso_global = get_dso_global(); + EXPECT_NOT_POISONED(*dso_global); + __msan_poison(dso_global, sizeof(*dso_global)); + EXPECT_POISONED(*dso_global); + dlclose(lib); + } +} + +// Regression test for a crash in dlopen() interceptor. +TEST(MemorySanitizer, dlopenFailed) { + const char *path = "/libmsan_loadable_does_not_exist.so"; + void *lib = dlopen(path, RTLD_LAZY); + ASSERT_TRUE(lib == NULL); +} + +#endif // MSAN_TEST_DISABLE_DLOPEN + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, sched_getaffinity) { + cpu_set_t mask; + int res = sched_getaffinity(getpid(), sizeof(mask), &mask); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(mask); +} +#endif + +TEST(MemorySanitizer, scanf) { + const char *input = "42 hello"; + int* d = new int; + char* s = new char[7]; + int res = sscanf(input, "%d %5s", d, s); + printf("res %d\n", res); + ASSERT_EQ(res, 2); + EXPECT_NOT_POISONED(*d); + EXPECT_NOT_POISONED(s[0]); + EXPECT_NOT_POISONED(s[1]); + EXPECT_NOT_POISONED(s[2]); + EXPECT_NOT_POISONED(s[3]); + EXPECT_NOT_POISONED(s[4]); + EXPECT_NOT_POISONED(s[5]); + EXPECT_POISONED(s[6]); + delete[] s; + delete d; +} + +static void *SimpleThread_threadfn(void* data) { + return new int; +} + +TEST(MemorySanitizer, SimpleThread) { + pthread_t t; + void *p; + int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(t); + res = pthread_join(t, &p); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(p); + delete (int*)p; +} + +static void *SmallStackThread_threadfn(void* data) { + return 0; +} + +#ifdef PTHREAD_STACK_MIN +# define SMALLSTACKSIZE PTHREAD_STACK_MIN +# define SMALLPRESTACKSIZE PTHREAD_STACK_MIN +#else +# define SMALLSTACKSIZE 64 * 1024 +# define SMALLPRESTACKSIZE 16 * 1024 +#endif + +TEST(MemorySanitizer, SmallStackThread) { + pthread_attr_t attr; + pthread_t t; + void *p; + int res; + res = pthread_attr_init(&attr); + ASSERT_EQ(0, res); + res = pthread_attr_setstacksize(&attr, SMALLSTACKSIZE); + ASSERT_EQ(0, res); + res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); + ASSERT_EQ(0, res); + res = pthread_join(t, &p); + ASSERT_EQ(0, res); + res = pthread_attr_destroy(&attr); + ASSERT_EQ(0, res); +} + +TEST(MemorySanitizer, SmallPreAllocatedStackThread) { + pthread_attr_t attr; + pthread_t t; + int res; + res = pthread_attr_init(&attr); + ASSERT_EQ(0, res); + void *stack; + const size_t kStackSize = SMALLPRESTACKSIZE; + res = posix_memalign(&stack, 4096, kStackSize); + ASSERT_EQ(0, res); + res = pthread_attr_setstack(&attr, stack, kStackSize); + ASSERT_EQ(0, res); + res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL); + EXPECT_EQ(0, res); + res = pthread_join(t, NULL); + ASSERT_EQ(0, res); + res = pthread_attr_destroy(&attr); + ASSERT_EQ(0, res); +} + +TEST(MemorySanitizer, pthread_attr_get) { + pthread_attr_t attr; + int res; + res = pthread_attr_init(&attr); + ASSERT_EQ(0, res); + { + int v; + res = pthread_attr_getdetachstate(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + size_t v; + res = pthread_attr_getguardsize(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + struct sched_param v; + res = pthread_attr_getschedparam(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + int v; + res = pthread_attr_getschedpolicy(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + int v; + res = pthread_attr_getinheritsched(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + int v; + res = pthread_attr_getscope(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + size_t v; + res = pthread_attr_getstacksize(&attr, &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } + { + void *v; + size_t w; + res = pthread_attr_getstack(&attr, &v, &w); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + EXPECT_NOT_POISONED(w); + } +#if !defined(__NetBSD__) + { + cpu_set_t v; + res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(v); + } +#endif + res = pthread_attr_destroy(&attr); + ASSERT_EQ(0, res); +} + +TEST(MemorySanitizer, pthread_getschedparam) { + int policy; + struct sched_param param; + int res = pthread_getschedparam(pthread_self(), &policy, ¶m); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(policy); + EXPECT_NOT_POISONED(param.sched_priority); +} + +TEST(MemorySanitizer, pthread_key_create) { + pthread_key_t key; + int res = pthread_key_create(&key, NULL); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(key); + res = pthread_key_delete(key); + ASSERT_EQ(0, res); +} + +namespace { +struct SignalCondArg { + pthread_cond_t* cond; + pthread_mutex_t* mu; + bool broadcast; +}; + +void *SignalCond(void *param) { + SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param); + pthread_mutex_lock(arg->mu); + if (arg->broadcast) + pthread_cond_broadcast(arg->cond); + else + pthread_cond_signal(arg->cond); + pthread_mutex_unlock(arg->mu); + return 0; +} +} // namespace + +TEST(MemorySanitizer, pthread_cond_wait) { + pthread_cond_t cond; + pthread_mutex_t mu; + SignalCondArg args = {&cond, &mu, false}; + pthread_cond_init(&cond, 0); + pthread_mutex_init(&mu, 0); + pthread_mutex_lock(&mu); + + // signal + pthread_t thr; + pthread_create(&thr, 0, SignalCond, &args); + int res = pthread_cond_wait(&cond, &mu); + ASSERT_EQ(0, res); + pthread_join(thr, 0); + + // broadcast + args.broadcast = true; + pthread_create(&thr, 0, SignalCond, &args); + res = pthread_cond_wait(&cond, &mu); + ASSERT_EQ(0, res); + pthread_join(thr, 0); + + pthread_mutex_unlock(&mu); + pthread_mutex_destroy(&mu); + pthread_cond_destroy(&cond); +} + +TEST(MemorySanitizer, tmpnam) { + char s[L_tmpnam]; + char *res = tmpnam(s); + ASSERT_EQ(s, res); + EXPECT_NOT_POISONED(strlen(res)); +} + +TEST(MemorySanitizer, tempnam) { + char *res = tempnam(NULL, "zzz"); + EXPECT_NOT_POISONED(strlen(res)); + free(res); +} + +TEST(MemorySanitizer, posix_memalign) { + void *p; + EXPECT_POISONED(p); + int res = posix_memalign(&p, 4096, 13); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(p); + EXPECT_EQ(0U, (uintptr_t)p % 4096); + free(p); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, memalign) { + void *p = memalign(4096, 13); + EXPECT_EQ(0U, (uintptr_t)p % 4096); + free(p); +} +#endif + +TEST(MemorySanitizer, valloc) { + void *a = valloc(100); + uintptr_t PageSize = GetPageSize(); + EXPECT_EQ(0U, (uintptr_t)a % PageSize); + free(a); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, pvalloc) { + uintptr_t PageSize = GetPageSize(); + void *p = pvalloc(PageSize + 100); + EXPECT_EQ(0U, (uintptr_t)p % PageSize); + EXPECT_EQ(2 * PageSize, __sanitizer_get_allocated_size(p)); + free(p); + + p = pvalloc(0); // pvalloc(0) should allocate at least one page. + EXPECT_EQ(0U, (uintptr_t)p % PageSize); + EXPECT_EQ(PageSize, __sanitizer_get_allocated_size(p)); + free(p); +} +#endif + +TEST(MemorySanitizer, inet_pton) { + const char *s = "1:0:0:0:0:0:0:8"; + unsigned char buf[sizeof(struct in6_addr)]; + int res = inet_pton(AF_INET6, s, buf); + ASSERT_EQ(1, res); + EXPECT_NOT_POISONED(buf[0]); + EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]); + + char s_out[INET6_ADDRSTRLEN]; + EXPECT_POISONED(s_out[3]); + const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN); + ASSERT_NE((void*)0, q); + EXPECT_NOT_POISONED(s_out[3]); +} + +TEST(MemorySanitizer, inet_aton) { + const char *s = "127.0.0.1"; + struct in_addr in[2]; + int res = inet_aton(s, in); + ASSERT_NE(0, res); + EXPECT_NOT_POISONED(in[0]); + EXPECT_POISONED(*(char *)(in + 1)); +} + +TEST(MemorySanitizer, uname) { + struct utsname u; + int res = uname(&u); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(strlen(u.sysname)); + EXPECT_NOT_POISONED(strlen(u.nodename)); + EXPECT_NOT_POISONED(strlen(u.release)); + EXPECT_NOT_POISONED(strlen(u.version)); + EXPECT_NOT_POISONED(strlen(u.machine)); +} + +TEST(MemorySanitizer, gethostname) { + char buf[100]; + int res = gethostname(buf, 100); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(strlen(buf)); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, sysinfo) { + struct sysinfo info; + int res = sysinfo(&info); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(info); +} +#endif + +TEST(MemorySanitizer, getpwuid) { + struct passwd *p = getpwuid(0); // root + ASSERT_TRUE(p != NULL); + EXPECT_NOT_POISONED(p->pw_name); + ASSERT_TRUE(p->pw_name != NULL); + EXPECT_NOT_POISONED(p->pw_name[0]); + EXPECT_NOT_POISONED(p->pw_uid); + ASSERT_EQ(0U, p->pw_uid); +} + +TEST(MemorySanitizer, getpwuid_r) { + struct passwd pwd; + struct passwd *pwdres; + char buf[10000]; + int res = getpwuid_r(0, &pwd, buf, sizeof(buf), &pwdres); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(pwd.pw_name); + ASSERT_TRUE(pwd.pw_name != NULL); + EXPECT_NOT_POISONED(pwd.pw_name[0]); + EXPECT_NOT_POISONED(pwd.pw_uid); + ASSERT_EQ(0U, pwd.pw_uid); + EXPECT_NOT_POISONED(pwdres); +} + +TEST(MemorySanitizer, getpwnam_r) { + struct passwd pwd; + struct passwd *pwdres; + char buf[10000]; + int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(pwd.pw_name); + ASSERT_TRUE(pwd.pw_name != NULL); + EXPECT_NOT_POISONED(pwd.pw_name[0]); + EXPECT_NOT_POISONED(pwd.pw_uid); + ASSERT_EQ(0U, pwd.pw_uid); + EXPECT_NOT_POISONED(pwdres); +} + +TEST(MemorySanitizer, getpwnam_r_positive) { + struct passwd pwd; + struct passwd *pwdres; + char s[5]; + strncpy(s, "abcd", 5); + __msan_poison(s, 5); + char buf[10000]; + int res; + EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres)); +} + +TEST(MemorySanitizer, getgrnam_r) { + struct group grp; + struct group *grpres; + char buf[10000]; + int res = getgrnam_r(SUPERUSER_GROUP, &grp, buf, sizeof(buf), &grpres); + ASSERT_EQ(0, res); + // Note that getgrnam_r() returns 0 if the matching group is not found. + ASSERT_NE(nullptr, grpres); + EXPECT_NOT_POISONED(grp.gr_name); + ASSERT_TRUE(grp.gr_name != NULL); + EXPECT_NOT_POISONED(grp.gr_name[0]); + EXPECT_NOT_POISONED(grp.gr_gid); + EXPECT_NOT_POISONED(grpres); +} + +TEST(MemorySanitizer, getpwent) { + setpwent(); + struct passwd *p = getpwent(); + ASSERT_TRUE(p != NULL); + EXPECT_NOT_POISONED(p->pw_name); + ASSERT_TRUE(p->pw_name != NULL); + EXPECT_NOT_POISONED(p->pw_name[0]); + EXPECT_NOT_POISONED(p->pw_uid); +} + +TEST(MemorySanitizer, getpwent_r) { + struct passwd pwd; + struct passwd *pwdres; + char buf[10000]; + setpwent(); + int res = getpwent_r(&pwd, buf, sizeof(buf), &pwdres); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(pwd.pw_name); + ASSERT_TRUE(pwd.pw_name != NULL); + EXPECT_NOT_POISONED(pwd.pw_name[0]); + EXPECT_NOT_POISONED(pwd.pw_uid); + EXPECT_NOT_POISONED(pwdres); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, fgetpwent) { + FILE *fp = fopen("/etc/passwd", "r"); + struct passwd *p = fgetpwent(fp); + ASSERT_TRUE(p != NULL); + EXPECT_NOT_POISONED(p->pw_name); + ASSERT_TRUE(p->pw_name != NULL); + EXPECT_NOT_POISONED(p->pw_name[0]); + EXPECT_NOT_POISONED(p->pw_uid); + fclose(fp); +} +#endif + +TEST(MemorySanitizer, getgrent) { + setgrent(); + struct group *p = getgrent(); + ASSERT_TRUE(p != NULL); + EXPECT_NOT_POISONED(p->gr_name); + ASSERT_TRUE(p->gr_name != NULL); + EXPECT_NOT_POISONED(p->gr_name[0]); + EXPECT_NOT_POISONED(p->gr_gid); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, fgetgrent) { + FILE *fp = fopen("/etc/group", "r"); + struct group *grp = fgetgrent(fp); + ASSERT_TRUE(grp != NULL); + EXPECT_NOT_POISONED(grp->gr_name); + ASSERT_TRUE(grp->gr_name != NULL); + EXPECT_NOT_POISONED(grp->gr_name[0]); + EXPECT_NOT_POISONED(grp->gr_gid); + for (char **p = grp->gr_mem; *p; ++p) { + EXPECT_NOT_POISONED((*p)[0]); + EXPECT_TRUE(strlen(*p) > 0); + } + fclose(fp); +} +#endif + +TEST(MemorySanitizer, getgrent_r) { + struct group grp; + struct group *grpres; + char buf[10000]; + setgrent(); + int res = getgrent_r(&grp, buf, sizeof(buf), &grpres); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(grp.gr_name); + ASSERT_TRUE(grp.gr_name != NULL); + EXPECT_NOT_POISONED(grp.gr_name[0]); + EXPECT_NOT_POISONED(grp.gr_gid); + EXPECT_NOT_POISONED(grpres); +} + +#if !defined(__FreeBSD__) && !defined(__NetBSD__) +TEST(MemorySanitizer, fgetgrent_r) { + FILE *fp = fopen("/etc/group", "r"); + struct group grp; + struct group *grpres; + char buf[10000]; + setgrent(); + int res = fgetgrent_r(fp, &grp, buf, sizeof(buf), &grpres); + ASSERT_EQ(0, res); + EXPECT_NOT_POISONED(grp.gr_name); + ASSERT_TRUE(grp.gr_name != NULL); + EXPECT_NOT_POISONED(grp.gr_name[0]); + EXPECT_NOT_POISONED(grp.gr_gid); + EXPECT_NOT_POISONED(grpres); + fclose(fp); +} +#endif + +TEST(MemorySanitizer, getgroups) { + int n = getgroups(0, 0); + gid_t *gids = new gid_t[n]; + int res = getgroups(n, gids); + ASSERT_EQ(n, res); + for (int i = 0; i < n; ++i) + EXPECT_NOT_POISONED(gids[i]); +} + +TEST(MemorySanitizer, getgroups_zero) { + gid_t group; + int n = getgroups(0, &group); + ASSERT_GE(n, 0); +} + +TEST(MemorySanitizer, getgroups_negative) { + gid_t group; + int n = getgroups(-1, 0); + ASSERT_EQ(-1, n); + + n = getgroups(-1, 0); + ASSERT_EQ(-1, n); +} + +TEST(MemorySanitizer, wordexp) { + wordexp_t w; + int res = wordexp("a b c", &w, 0); + ASSERT_EQ(0, res); + ASSERT_EQ(3U, w.we_wordc); + ASSERT_STREQ("a", w.we_wordv[0]); + ASSERT_STREQ("b", w.we_wordv[1]); + ASSERT_STREQ("c", w.we_wordv[2]); +} + +template<class T> +static bool applySlt(T value, T shadow) { + __msan_partial_poison(&value, &shadow, sizeof(T)); + volatile bool zzz = true; + // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of + // a shift-and-trunc to get at the highest bit. + volatile bool v = value < 0 || zzz; + return v; +} + +TEST(MemorySanitizer, SignedCompareWithZero) { + EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF)); + EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF)); + EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF)); + EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF)); + EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF)); + EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF)); +} + +template <class T, class S> +static T poisoned(T Va, S Sa) { + char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)]; + char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)]; + T a; + a = Va; + __msan_partial_poison(&a, &Sa, sizeof(T)); + return a; +} + +TEST(MemorySanitizer, ICmpRelational) { + EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0)); + EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0)); + EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU)); + EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU)); + EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF)); + EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) < + poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); + EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) < + poisoned(-1, 0xFFFFFFFFU)); + + EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0)); + EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0)); + EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU)); + EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU)); + EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF)); + EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <= + poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); + EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <= + poisoned(-1, 0xFFFFFFFFU)); + + EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0)); + EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0)); + EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU)); + EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU)); + EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF)); + EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) > + poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); + EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) > + poisoned(-1, 0xFFFFFFFFU)); + + EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0)); + EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0)); + EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU)); + EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU)); + EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF)); + EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >= + poisoned(0xFFFFFFFFU, 0xFFFFFFFFU)); + EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >= + poisoned(-1, 0xFFFFFFFFU)); + + EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0)); + EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0)); + // Note that "icmp op X, Y" is approximated with "or shadow(X), shadow(Y)" + // and therefore may generate false positives in some cases, e.g. the + // following one: + // EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U)); +} + +#if MSAN_HAS_M128 +TEST(MemorySanitizer, ICmpVectorRelational) { + EXPECT_NOT_POISONED( + _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)), + poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)))); + EXPECT_NOT_POISONED( + _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)), + poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)))); + EXPECT_POISONED( + _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)), + poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)))); + EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)), + poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0)))); +} + +TEST(MemorySanitizer, stmxcsr_ldmxcsr) { + U4 x = _mm_getcsr(); + EXPECT_NOT_POISONED(x); + + _mm_setcsr(x); + + __msan_poison(&x, sizeof(x)); + U4 origin = __LINE__; + __msan_set_origin(&x, sizeof(x), origin); + EXPECT_UMR_O(_mm_setcsr(x), origin); +} +#endif + +// Volatile bitfield store is implemented as load-mask-store +// Test that we don't warn on the store of (uninitialized) padding. +struct VolatileBitfieldStruct { + volatile unsigned x : 1; + unsigned y : 1; +}; + +TEST(MemorySanitizer, VolatileBitfield) { + VolatileBitfieldStruct *S = new VolatileBitfieldStruct; + S->x = 1; + EXPECT_NOT_POISONED((unsigned)S->x); + EXPECT_POISONED((unsigned)S->y); +} + +TEST(MemorySanitizer, UnalignedLoad) { + char x[32] __attribute__((aligned(8))); + U4 origin = __LINE__; + for (unsigned i = 0; i < sizeof(x) / 4; ++i) + __msan_set_origin(x + 4 * i, 4, origin + i); + + memset(x + 8, 0, 16); + EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 6), origin + 1); + EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 7), origin + 1); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 8)); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 9)); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 22)); + EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 23), origin + 6); + EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 24), origin + 6); + + EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 4), origin + 1); + EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 7), origin + 1); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 8)); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 9)); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 20)); + EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 21), origin + 6); + EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 24), origin + 6); + + EXPECT_POISONED_O(__sanitizer_unaligned_load64(x), origin); + EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 1), origin); + EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 7), origin + 1); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 8)); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 9)); + EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 16)); + EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 17), origin + 6); + EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 21), origin + 6); + EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 24), origin + 6); +} + +TEST(MemorySanitizer, UnalignedStore16) { + char x[5] __attribute__((aligned(4))); + U2 y2 = 0; + U4 origin = __LINE__; + __msan_poison(&y2, 1); + __msan_set_origin(&y2, 1, origin); + + __sanitizer_unaligned_store16(x + 1, y2); + EXPECT_POISONED_O(x[0], origin); + EXPECT_POISONED_O(x[1], origin); + EXPECT_NOT_POISONED(x[2]); + EXPECT_POISONED_O(x[3], origin); +} + +TEST(MemorySanitizer, UnalignedStore32) { + char x[8] __attribute__((aligned(4))); + U4 y4 = 0; + U4 origin = __LINE__; + __msan_poison(&y4, 2); + __msan_set_origin(&y4, 2, origin); + + __sanitizer_unaligned_store32(x + 3, y4); + EXPECT_POISONED_O(x[0], origin); + EXPECT_POISONED_O(x[1], origin); + EXPECT_POISONED_O(x[2], origin); + EXPECT_POISONED_O(x[3], origin); + EXPECT_POISONED_O(x[4], origin); + EXPECT_NOT_POISONED(x[5]); + EXPECT_NOT_POISONED(x[6]); + EXPECT_POISONED_O(x[7], origin); +} + +TEST(MemorySanitizer, UnalignedStore64) { + char x[16] __attribute__((aligned(8))); + U8 y8 = 0; + U4 origin = __LINE__; + __msan_poison(&y8, 3); + __msan_poison(((char *)&y8) + sizeof(y8) - 2, 1); + __msan_set_origin(&y8, 8, origin); + + __sanitizer_unaligned_store64(x + 3, y8); + EXPECT_POISONED_O(x[0], origin); + EXPECT_POISONED_O(x[1], origin); + EXPECT_POISONED_O(x[2], origin); + EXPECT_POISONED_O(x[3], origin); + EXPECT_POISONED_O(x[4], origin); + EXPECT_POISONED_O(x[5], origin); + EXPECT_NOT_POISONED(x[6]); + EXPECT_NOT_POISONED(x[7]); + EXPECT_NOT_POISONED(x[8]); + EXPECT_POISONED_O(x[9], origin); + EXPECT_NOT_POISONED(x[10]); + EXPECT_POISONED_O(x[11], origin); +} + +TEST(MemorySanitizer, UnalignedStore16_precise) { + char x[8] __attribute__((aligned(4))); + U2 y = 0; + U4 originx1 = __LINE__; + U4 originx2 = __LINE__; + U4 originy = __LINE__; + __msan_poison(x, sizeof(x)); + __msan_set_origin(x, 4, originx1); + __msan_set_origin(x + 4, 4, originx2); + __msan_poison(((char *)&y) + 1, 1); + __msan_set_origin(&y, sizeof(y), originy); + + __sanitizer_unaligned_store16(x + 3, y); + EXPECT_POISONED_O(x[0], originx1); + EXPECT_POISONED_O(x[1], originx1); + EXPECT_POISONED_O(x[2], originx1); + EXPECT_NOT_POISONED(x[3]); + EXPECT_POISONED_O(x[4], originy); + EXPECT_POISONED_O(x[5], originy); + EXPECT_POISONED_O(x[6], originy); + EXPECT_POISONED_O(x[7], originy); +} + +TEST(MemorySanitizer, UnalignedStore16_precise2) { + char x[8] __attribute__((aligned(4))); + U2 y = 0; + U4 originx1 = __LINE__; + U4 originx2 = __LINE__; + U4 originy = __LINE__; + __msan_poison(x, sizeof(x)); + __msan_set_origin(x, 4, originx1); + __msan_set_origin(x + 4, 4, originx2); + __msan_poison(((char *)&y), 1); + __msan_set_origin(&y, sizeof(y), originy); + + __sanitizer_unaligned_store16(x + 3, y); + EXPECT_POISONED_O(x[0], originy); + EXPECT_POISONED_O(x[1], originy); + EXPECT_POISONED_O(x[2], originy); + EXPECT_POISONED_O(x[3], originy); + EXPECT_NOT_POISONED(x[4]); + EXPECT_POISONED_O(x[5], originx2); + EXPECT_POISONED_O(x[6], originx2); + EXPECT_POISONED_O(x[7], originx2); +} + +TEST(MemorySanitizer, UnalignedStore64_precise) { + char x[12] __attribute__((aligned(8))); + U8 y = 0; + U4 originx1 = __LINE__; + U4 originx2 = __LINE__; + U4 originx3 = __LINE__; + U4 originy = __LINE__; + __msan_poison(x, sizeof(x)); + __msan_set_origin(x, 4, originx1); + __msan_set_origin(x + 4, 4, originx2); + __msan_set_origin(x + 8, 4, originx3); + __msan_poison(((char *)&y) + 1, 1); + __msan_poison(((char *)&y) + 7, 1); + __msan_set_origin(&y, sizeof(y), originy); + + __sanitizer_unaligned_store64(x + 2, y); + EXPECT_POISONED_O(x[0], originy); + EXPECT_POISONED_O(x[1], originy); + EXPECT_NOT_POISONED(x[2]); + EXPECT_POISONED_O(x[3], originy); + + EXPECT_NOT_POISONED(x[4]); + EXPECT_NOT_POISONED(x[5]); + EXPECT_NOT_POISONED(x[6]); + EXPECT_NOT_POISONED(x[7]); + + EXPECT_NOT_POISONED(x[8]); + EXPECT_POISONED_O(x[9], originy); + EXPECT_POISONED_O(x[10], originy); + EXPECT_POISONED_O(x[11], originy); +} + +TEST(MemorySanitizer, UnalignedStore64_precise2) { + char x[12] __attribute__((aligned(8))); + U8 y = 0; + U4 originx1 = __LINE__; + U4 originx2 = __LINE__; + U4 originx3 = __LINE__; + U4 originy = __LINE__; + __msan_poison(x, sizeof(x)); + __msan_set_origin(x, 4, originx1); + __msan_set_origin(x + 4, 4, originx2); + __msan_set_origin(x + 8, 4, originx3); + __msan_poison(((char *)&y) + 3, 3); + __msan_set_origin(&y, sizeof(y), originy); + + __sanitizer_unaligned_store64(x + 2, y); + EXPECT_POISONED_O(x[0], originx1); + EXPECT_POISONED_O(x[1], originx1); + EXPECT_NOT_POISONED(x[2]); + EXPECT_NOT_POISONED(x[3]); + + EXPECT_NOT_POISONED(x[4]); + EXPECT_POISONED_O(x[5], originy); + EXPECT_POISONED_O(x[6], originy); + EXPECT_POISONED_O(x[7], originy); + + EXPECT_NOT_POISONED(x[8]); + EXPECT_NOT_POISONED(x[9]); + EXPECT_POISONED_O(x[10], originx3); + EXPECT_POISONED_O(x[11], originx3); +} + +#if (defined(__x86_64__) && defined(__clang__)) +namespace { +typedef U1 V16x8 __attribute__((__vector_size__(16))); +typedef U2 V8x16 __attribute__((__vector_size__(16))); +typedef U4 V4x32 __attribute__((__vector_size__(16))); +typedef U8 V2x64 __attribute__((__vector_size__(16))); +typedef U4 V8x32 __attribute__((__vector_size__(32))); +typedef U8 V4x64 __attribute__((__vector_size__(32))); +typedef U4 V2x32 __attribute__((__vector_size__(8))); +typedef U2 V4x16 __attribute__((__vector_size__(8))); +typedef U1 V8x8 __attribute__((__vector_size__(8))); + +V8x16 shift_sse2_left_scalar(V8x16 x, U4 y) { + return _mm_slli_epi16(x, y); +} + +V8x16 shift_sse2_left(V8x16 x, V8x16 y) { + return _mm_sll_epi16(x, y); +} + +TEST(VectorShiftTest, sse2_left_scalar) { + V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; + V8x16 u = shift_sse2_left_scalar(v, 2); + EXPECT_POISONED(u[0]); + EXPECT_POISONED(u[1]); + EXPECT_NOT_POISONED(u[0] | (3U << 2)); + EXPECT_NOT_POISONED(u[1] | (7U << 2)); + u[0] = u[1] = 0; + EXPECT_NOT_POISONED(u); +} + +TEST(VectorShiftTest, sse2_left_scalar_by_uninit) { + V8x16 v = {0, 1, 2, 3, 4, 5, 6, 7}; + V8x16 u = shift_sse2_left_scalar(v, Poisoned<U4>()); + EXPECT_POISONED(u[0]); + EXPECT_POISONED(u[1]); + EXPECT_POISONED(u[2]); + EXPECT_POISONED(u[3]); + EXPECT_POISONED(u[4]); + EXPECT_POISONED(u[5]); + EXPECT_POISONED(u[6]); + EXPECT_POISONED(u[7]); +} + +TEST(VectorShiftTest, sse2_left) { + V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; + // Top 64 bits of shift count don't affect the result. + V2x64 s = {2, Poisoned<U8>()}; + V8x16 u = shift_sse2_left(v, s); + EXPECT_POISONED(u[0]); + EXPECT_POISONED(u[1]); + EXPECT_NOT_POISONED(u[0] | (3U << 2)); + EXPECT_NOT_POISONED(u[1] | (7U << 2)); + u[0] = u[1] = 0; + EXPECT_NOT_POISONED(u); +} + +TEST(VectorShiftTest, sse2_left_by_uninit) { + V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7}; + V2x64 s = {Poisoned<U8>(), Poisoned<U8>()}; + V8x16 u = shift_sse2_left(v, s); + EXPECT_POISONED(u[0]); + EXPECT_POISONED(u[1]); + EXPECT_POISONED(u[2]); + EXPECT_POISONED(u[3]); + EXPECT_POISONED(u[4]); + EXPECT_POISONED(u[5]); + EXPECT_POISONED(u[6]); + EXPECT_POISONED(u[7]); +} + +#ifdef __AVX2__ +V4x32 shift_avx2_left(V4x32 x, V4x32 y) { + return _mm_sllv_epi32(x, y); +} +// This is variable vector shift that's only available starting with AVX2. +// V4x32 shift_avx2_left(V4x32 x, V4x32 y) { +TEST(VectorShiftTest, avx2_left) { + V4x32 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3}; + V4x32 s = {2, Poisoned<U4>(), 3, Poisoned<U4>()}; + V4x32 u = shift_avx2_left(v, s); + EXPECT_POISONED(u[0]); + EXPECT_NOT_POISONED(u[0] | (~7U)); + EXPECT_POISONED(u[1]); + EXPECT_POISONED(u[1] | (~31U)); + EXPECT_NOT_POISONED(u[2]); + EXPECT_POISONED(u[3]); + EXPECT_POISONED(u[3] | (~31U)); +} +#endif // __AVX2__ +} // namespace + +TEST(VectorPackTest, sse2_packssdw_128) { + const unsigned S2_max = (1 << 15) - 1; + V4x32 a = {Poisoned<U4>(0, 0xFF0000), Poisoned<U4>(0, 0xFFFF0000), + S2_max + 100, 4}; + V4x32 b = {Poisoned<U4>(0, 0xFF), S2_max + 10000, Poisoned<U4>(0, 0xFF00), + S2_max}; + + V8x16 c = _mm_packs_epi32(a, b); + + EXPECT_POISONED(c[0]); + EXPECT_POISONED(c[1]); + EXPECT_NOT_POISONED(c[2]); + EXPECT_NOT_POISONED(c[3]); + EXPECT_POISONED(c[4]); + EXPECT_NOT_POISONED(c[5]); + EXPECT_POISONED(c[6]); + EXPECT_NOT_POISONED(c[7]); + + EXPECT_EQ(c[2], S2_max); + EXPECT_EQ(c[3], 4); + EXPECT_EQ(c[5], S2_max); + EXPECT_EQ(c[7], S2_max); +} + +TEST(VectorPackTest, mmx_packuswb) { + const unsigned U1_max = (1 << 8) - 1; + V4x16 a = {Poisoned<U2>(0, 0xFF00), Poisoned<U2>(0, 0xF000U), U1_max + 100, + 4}; + V4x16 b = {Poisoned<U2>(0, 0xFF), U1_max - 1, Poisoned<U2>(0, 0xF), U1_max}; + V8x8 c = _mm_packs_pu16(a, b); + + EXPECT_POISONED(c[0]); + EXPECT_POISONED(c[1]); + EXPECT_NOT_POISONED(c[2]); + EXPECT_NOT_POISONED(c[3]); + EXPECT_POISONED(c[4]); + EXPECT_NOT_POISONED(c[5]); + EXPECT_POISONED(c[6]); + EXPECT_NOT_POISONED(c[7]); + + EXPECT_EQ(c[2], U1_max); + EXPECT_EQ(c[3], 4); + EXPECT_EQ(c[5], U1_max - 1); + EXPECT_EQ(c[7], U1_max); +} + +TEST(VectorSadTest, sse2_psad_bw) { + V16x8 a = {Poisoned<U1>(), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; + V16x8 b = {100, 101, 102, 103, 104, 105, 106, 107, + 108, 109, 110, 111, 112, 113, 114, 115}; + V2x64 c = _mm_sad_epu8(a, b); + + EXPECT_POISONED(c[0]); + EXPECT_NOT_POISONED(c[1]); + + EXPECT_EQ(800U, c[1]); +} + +TEST(VectorMaddTest, mmx_pmadd_wd) { + V4x16 a = {Poisoned<U2>(), 1, 2, 3}; + V4x16 b = {100, 101, 102, 103}; + V2x32 c = _mm_madd_pi16(a, b); + + EXPECT_POISONED(c[0]); + EXPECT_NOT_POISONED(c[1]); + + EXPECT_EQ((unsigned)(2 * 102 + 3 * 103), c[1]); +} + +TEST(VectorCmpTest, mm_cmpneq_ps) { + V4x32 c; + c = _mm_cmpneq_ps(V4x32{Poisoned<U4>(), 1, 2, 3}, V4x32{4, 5, Poisoned<U4>(), 6}); + EXPECT_POISONED(c[0]); + EXPECT_NOT_POISONED(c[1]); + EXPECT_POISONED(c[2]); + EXPECT_NOT_POISONED(c[3]); + + c = _mm_cmpneq_ps(V4x32{0, 1, 2, 3}, V4x32{4, 5, 6, 7}); + EXPECT_NOT_POISONED(c); +} + +TEST(VectorCmpTest, mm_cmpneq_sd) { + V2x64 c; + c = _mm_cmpneq_sd(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3}); + EXPECT_POISONED(c[0]); + c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3}); + EXPECT_POISONED(c[0]); + c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{3, 4}); + EXPECT_NOT_POISONED(c[0]); + c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()}); + EXPECT_NOT_POISONED(c[0]); + c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()}); + EXPECT_NOT_POISONED(c[0]); +} + +TEST(VectorCmpTest, builtin_ia32_ucomisdlt) { + U4 c; + c = __builtin_ia32_ucomisdlt(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3}); + EXPECT_POISONED(c); + c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3}); + EXPECT_POISONED(c); + c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{3, 4}); + EXPECT_NOT_POISONED(c); + c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()}); + EXPECT_NOT_POISONED(c); + c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()}); + EXPECT_NOT_POISONED(c); +} + +#endif // defined(__x86_64__) && defined(__clang__) + +TEST(MemorySanitizerOrigins, SetGet) { + EXPECT_EQ(TrackingOrigins(), !!__msan_get_track_origins()); + if (!TrackingOrigins()) return; + int x; + __msan_set_origin(&x, sizeof(x), 1234); + EXPECT_ORIGIN(1234U, __msan_get_origin(&x)); + __msan_set_origin(&x, sizeof(x), 5678); + EXPECT_ORIGIN(5678U, __msan_get_origin(&x)); + __msan_set_origin(&x, sizeof(x), 0); + EXPECT_ORIGIN(0U, __msan_get_origin(&x)); +} + +namespace { +struct S { + U4 dummy; + U2 a; + U2 b; +}; + +TEST(MemorySanitizerOrigins, InitializedStoreDoesNotChangeOrigin) { + if (!TrackingOrigins()) return; + + S s; + U4 origin = rand(); // NOLINT + s.a = *GetPoisonedO<U2>(0, origin); + EXPECT_ORIGIN(origin, __msan_get_origin(&s.a)); + EXPECT_ORIGIN(origin, __msan_get_origin(&s.b)); + + s.b = 42; + EXPECT_ORIGIN(origin, __msan_get_origin(&s.a)); + EXPECT_ORIGIN(origin, __msan_get_origin(&s.b)); +} +} // namespace + +template<class T, class BinaryOp> +INLINE +void BinaryOpOriginTest(BinaryOp op) { + U4 ox = rand(); //NOLINT + U4 oy = rand(); //NOLINT + T *x = GetPoisonedO<T>(0, ox, 0); + T *y = GetPoisonedO<T>(1, oy, 0); + T *z = GetPoisonedO<T>(2, 0, 0); + + *z = op(*x, *y); + U4 origin = __msan_get_origin(z); + EXPECT_POISONED_O(*z, origin); + EXPECT_EQ(true, __msan_origin_is_descendant_or_same(origin, ox) || + __msan_origin_is_descendant_or_same(origin, oy)); + + // y is poisoned, x is not. + *x = 10101; + *y = *GetPoisonedO<T>(1, oy); + break_optimization(x); + __msan_set_origin(z, sizeof(*z), 0); + *z = op(*x, *y); + EXPECT_POISONED_O(*z, oy); + EXPECT_ORIGIN(oy, __msan_get_origin(z)); + + // x is poisoned, y is not. + *x = *GetPoisonedO<T>(0, ox); + *y = 10101010; + break_optimization(y); + __msan_set_origin(z, sizeof(*z), 0); + *z = op(*x, *y); + EXPECT_POISONED_O(*z, ox); + EXPECT_ORIGIN(ox, __msan_get_origin(z)); +} + +template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; } +template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; } +template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; } +template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; } +template<class T> INLINE T AND(const T &a, const T&b) { return a & b; } +template<class T> INLINE T OR (const T &a, const T&b) { return a | b; } + +TEST(MemorySanitizerOrigins, BinaryOp) { + if (!TrackingOrigins()) return; + BinaryOpOriginTest<S8>(XOR<S8>); + BinaryOpOriginTest<U8>(ADD<U8>); + BinaryOpOriginTest<S4>(SUB<S4>); + BinaryOpOriginTest<S4>(MUL<S4>); + BinaryOpOriginTest<U4>(OR<U4>); + BinaryOpOriginTest<U4>(AND<U4>); + BinaryOpOriginTest<double>(ADD<U4>); + BinaryOpOriginTest<float>(ADD<S4>); + BinaryOpOriginTest<double>(ADD<double>); + BinaryOpOriginTest<float>(ADD<double>); +} + +TEST(MemorySanitizerOrigins, Unary) { + if (!TrackingOrigins()) return; + EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__); + + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + + EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__); + + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + + EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__); + EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__); +} + +TEST(MemorySanitizerOrigins, EQ) { + if (!TrackingOrigins()) return; + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__); +} + +TEST(MemorySanitizerOrigins, DIV) { + if (!TrackingOrigins()) return; + EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__); + unsigned o = __LINE__; + EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o); +} + +TEST(MemorySanitizerOrigins, SHIFT) { + if (!TrackingOrigins()) return; + EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__); + EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__); + EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__); + EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__); +} + +template<class T, int N> +void MemCpyTest() { + int ox = __LINE__; + T *x = new T[N]; + T *y = new T[N]; + T *z = new T[N]; + T *q = new T[N]; + __msan_poison(x, N * sizeof(T)); + __msan_set_origin(x, N * sizeof(T), ox); + __msan_set_origin(y, N * sizeof(T), 777777); + __msan_set_origin(z, N * sizeof(T), 888888); + EXPECT_NOT_POISONED(x); + memcpy(y, x, N * sizeof(T)); + EXPECT_POISONED_O(y[0], ox); + EXPECT_POISONED_O(y[N/2], ox); + EXPECT_POISONED_O(y[N-1], ox); + EXPECT_NOT_POISONED(x); +#if !defined(__NetBSD__) + void *res = mempcpy(q, x, N * sizeof(T)); + ASSERT_EQ(q + N, res); + EXPECT_POISONED_O(q[0], ox); + EXPECT_POISONED_O(q[N/2], ox); + EXPECT_POISONED_O(q[N-1], ox); + EXPECT_NOT_POISONED(x); +#endif + memmove(z, x, N * sizeof(T)); + EXPECT_POISONED_O(z[0], ox); + EXPECT_POISONED_O(z[N/2], ox); + EXPECT_POISONED_O(z[N-1], ox); +} + +TEST(MemorySanitizerOrigins, LargeMemCpy) { + if (!TrackingOrigins()) return; + MemCpyTest<U1, 10000>(); + MemCpyTest<U8, 10000>(); +} + +TEST(MemorySanitizerOrigins, SmallMemCpy) { + if (!TrackingOrigins()) return; + MemCpyTest<U8, 1>(); + MemCpyTest<U8, 2>(); + MemCpyTest<U8, 3>(); +} + +TEST(MemorySanitizerOrigins, Select) { + if (!TrackingOrigins()) return; + EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__)); + EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__); + S4 x; + break_optimization(&x); + x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0; + + EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__); + EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__); +} + +NOINLINE int RetvalOriginTest(U4 origin) { + int *a = new int; + break_optimization(a); + __msan_set_origin(a, sizeof(*a), origin); + int res = *a; + delete a; + return res; +} + +TEST(MemorySanitizerOrigins, Retval) { + if (!TrackingOrigins()) return; + EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); +} + +NOINLINE void ParamOriginTest(int param, U4 origin) { + EXPECT_POISONED_O(param, origin); +} + +TEST(MemorySanitizerOrigins, Param) { + if (!TrackingOrigins()) return; + int *a = new int; + U4 origin = __LINE__; + break_optimization(a); + __msan_set_origin(a, sizeof(*a), origin); + ParamOriginTest(*a, origin); + delete a; +} + +TEST(MemorySanitizerOrigins, Invoke) { + if (!TrackingOrigins()) return; + StructWithDtor s; // Will cause the calls to become invokes. + EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__); +} + +TEST(MemorySanitizerOrigins, strlen) { + S8 alignment; + break_optimization(&alignment); + char x[4] = {'a', 'b', 0, 0}; + __msan_poison(&x[2], 1); + U4 origin = __LINE__; + __msan_set_origin(x, sizeof(x), origin); + EXPECT_UMR_O(volatile unsigned y = strlen(x), origin); +} + +TEST(MemorySanitizerOrigins, wcslen) { + wchar_t w[3] = {'a', 'b', 0}; + U4 origin = __LINE__; + __msan_set_origin(w, sizeof(w), origin); + __msan_poison(&w[2], sizeof(wchar_t)); + EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin); +} + +#if MSAN_HAS_M128 +TEST(MemorySanitizerOrigins, StoreIntrinsic) { + __m128 x, y; + U4 origin = __LINE__; + __msan_set_origin(&x, sizeof(x), origin); + __msan_poison(&x, sizeof(x)); + _mm_storeu_ps((float*)&y, x); + EXPECT_POISONED_O(y, origin); +} +#endif + +NOINLINE void RecursiveMalloc(int depth) { + static int count; + count++; + if ((count % (1024 * 1024)) == 0) + printf("RecursiveMalloc: %d\n", count); + int *x1 = new int; + int *x2 = new int; + break_optimization(x1); + break_optimization(x2); + if (depth > 0) { + RecursiveMalloc(depth-1); + RecursiveMalloc(depth-1); + } + delete x1; + delete x2; +} + +TEST(MemorySanitizer, Select) { + int x; + int volatile* p = &x; + int z = *p ? 1 : 0; + EXPECT_POISONED(z); +} + +TEST(MemorySanitizer, SelectPartial) { + // Precise instrumentation of select. + // Some bits of the result do not depend on select condition, and must stay + // initialized even if select condition is not. These are the bits that are + // equal and initialized in both left and right select arguments. + U4 x = 0xFFFFABCDU; + U4 x_s = 0xFFFF0000U; + __msan_partial_poison(&x, &x_s, sizeof(x)); + U4 y = 0xAB00U; + U1 cond = true; + __msan_poison(&cond, sizeof(cond)); + U4 z = cond ? x : y; + __msan_print_shadow(&z, sizeof(z)); + EXPECT_POISONED(z & 0xFFU); + EXPECT_NOT_POISONED(z & 0xFF00U); + EXPECT_POISONED(z & 0xFF0000U); + EXPECT_POISONED(z & 0xFF000000U); + EXPECT_EQ(0xAB00U, z & 0xFF00U); +} + +TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) { + RecursiveMalloc(22); +} + +TEST(MemorySanitizerAllocator, get_estimated_allocated_size) { + size_t sizes[] = {0, 20, 5000, 1<<20}; + for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) { + size_t alloc_size = __sanitizer_get_estimated_allocated_size(sizes[i]); + EXPECT_EQ(alloc_size, sizes[i]); + } +} + +TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) { + char *array = reinterpret_cast<char*>(malloc(100)); + int *int_ptr = new int; + + EXPECT_TRUE(__sanitizer_get_ownership(array)); + EXPECT_EQ(100U, __sanitizer_get_allocated_size(array)); + + EXPECT_TRUE(__sanitizer_get_ownership(int_ptr)); + EXPECT_EQ(sizeof(*int_ptr), __sanitizer_get_allocated_size(int_ptr)); + + void *wild_addr = reinterpret_cast<void*>(0x1); + EXPECT_FALSE(__sanitizer_get_ownership(wild_addr)); + EXPECT_EQ(0U, __sanitizer_get_allocated_size(wild_addr)); + + EXPECT_FALSE(__sanitizer_get_ownership(array + 50)); + EXPECT_EQ(0U, __sanitizer_get_allocated_size(array + 50)); + + // NULL is a valid argument for GetAllocatedSize but is not owned. + EXPECT_FALSE(__sanitizer_get_ownership(NULL)); + EXPECT_EQ(0U, __sanitizer_get_allocated_size(NULL)); + + free(array); + EXPECT_FALSE(__sanitizer_get_ownership(array)); + EXPECT_EQ(0U, __sanitizer_get_allocated_size(array)); + + delete int_ptr; +} + +TEST(MemorySanitizer, MlockTest) { + EXPECT_EQ(0, mlockall(MCL_CURRENT)); + EXPECT_EQ(0, mlock((void*)0x12345, 0x5678)); + EXPECT_EQ(0, munlockall()); + EXPECT_EQ(0, munlock((void*)0x987, 0x654)); +} + +// Test that LargeAllocator unpoisons memory before releasing it to the OS. +TEST(MemorySanitizer, LargeAllocatorUnpoisonsOnFree) { + void *p = malloc(1024 * 1024); + free(p); + + typedef void *(*mmap_fn)(void *, size_t, int, int, int, off_t); + mmap_fn real_mmap = (mmap_fn)dlsym(RTLD_NEXT, "mmap"); + + // Allocate the page that was released to the OS in free() with the real mmap, + // bypassing the interceptor. + char *q = (char *)real_mmap(p, 4096, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + ASSERT_NE((char *)0, q); + + ASSERT_TRUE(q <= p); + ASSERT_TRUE(q + 4096 > p); + + EXPECT_NOT_POISONED(q[0]); + EXPECT_NOT_POISONED(q[10]); + EXPECT_NOT_POISONED(q[100]); + + munmap(q, 4096); +} + +#if SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE +TEST(MemorySanitizer, MallocUsableSizeTest) { + const size_t kArraySize = 100; + char *array = Ident((char*)malloc(kArraySize)); + int *int_ptr = Ident(new int); + EXPECT_EQ(0U, malloc_usable_size(NULL)); + EXPECT_EQ(kArraySize, malloc_usable_size(array)); + EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr)); + free(array); + delete int_ptr; +} +#endif // SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE + +#ifdef __x86_64__ +static bool HaveBmi() { + U4 a = 0, b = 0, c = 0, d = 0; + asm("cpuid\n\t" : "=a"(a), "=D"(b), "=c"(c), "=d"(d) : "a"(7)); + const U4 kBmi12Mask = (1U<<3) | (1U<<8); + return (b & kBmi12Mask) == kBmi12Mask; +} + +__attribute__((target("bmi,bmi2"))) +static void TestBZHI() { + EXPECT_NOT_POISONED( + __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF000000), 24)); + EXPECT_POISONED( + __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF800000), 24)); + // Second operand saturates. + EXPECT_POISONED( + __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0x80000000), 240)); + // Any poison in the second operand poisons output. + EXPECT_POISONED( + __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 1))); + EXPECT_POISONED( + __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0x80000000))); + EXPECT_POISONED( + __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0xFFFFFFFF))); + + EXPECT_NOT_POISONED( + __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF00000000000000ULL), 56)); + EXPECT_POISONED( + __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF80000000000000ULL), 56)); + // Second operand saturates. + EXPECT_POISONED( + __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0x8000000000000000ULL), 240)); + // Any poison in the second operand poisons output. + EXPECT_POISONED( + __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 1))); + EXPECT_POISONED( + __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0x8000000000000000ULL))); + EXPECT_POISONED( + __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0xFFFFFFFF00000000ULL))); +} + +inline U4 bextr_imm(U4 start, U4 len) { + start &= 0xFF; + len &= 0xFF; + return (len << 8) | start; +} + +__attribute__((target("bmi,bmi2"))) +static void TestBEXTR() { + EXPECT_POISONED( + __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(0, 8))); + EXPECT_POISONED( + __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 8))); + EXPECT_NOT_POISONED( + __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 8))); + EXPECT_NOT_POISONED( + __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 800))); + EXPECT_POISONED( + __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 800))); + EXPECT_NOT_POISONED( + __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(5, 0))); + + EXPECT_POISONED( + __builtin_ia32_bextr_u32(0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 1))); + EXPECT_POISONED(__builtin_ia32_bextr_u32( + 0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 0x80000000))); + + EXPECT_POISONED( + __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(0, 8))); + EXPECT_POISONED( + __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 8))); + EXPECT_NOT_POISONED( + __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 8))); + EXPECT_NOT_POISONED( + __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 800))); + EXPECT_POISONED( + __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 800))); + EXPECT_NOT_POISONED( + __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(5, 0))); + + // Poison in the top half. + EXPECT_NOT_POISONED(__builtin_ia32_bextr_u64( + Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 8))); + EXPECT_POISONED(__builtin_ia32_bextr_u64( + Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 9))); + + EXPECT_POISONED( + __builtin_ia32_bextr_u64(0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 1))); + EXPECT_POISONED(__builtin_ia32_bextr_u64( + 0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 0x80000000))); +} + +__attribute__((target("bmi,bmi2"))) +static void TestPDEP() { + U4 x = Poisoned<U4>(0, 0xFF00); + EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF)); + EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF)); + EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF00)); + EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00)); + + EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00) & 0xFF); + EXPECT_POISONED(__builtin_ia32_pdep_si(0, Poisoned<U4>(0xF, 1))); + + U8 y = Poisoned<U8>(0, 0xFF00); + EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF)); + EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF)); + EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF0000000000)); + EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF000000000000)); + + EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF00) & 0xFF); + EXPECT_POISONED(__builtin_ia32_pdep_di(0, Poisoned<U4>(0xF, 1))); +} + +__attribute__((target("bmi,bmi2"))) +static void TestPEXT() { + U4 x = Poisoned<U4>(0, 0xFF00); + EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0xFF)); + EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1FF)); + EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x100)); + EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1000)); + EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0x10000)); + + EXPECT_POISONED(__builtin_ia32_pext_si(0xFF00, Poisoned<U4>(0xFF, 1))); + + U8 y = Poisoned<U8>(0, 0xFF0000000000); + EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0xFF00000000)); + EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x1FF00000000)); + EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x10000000000)); + EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x100000000000)); + EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0x1000000000000)); + + EXPECT_POISONED(__builtin_ia32_pext_di(0xFF00, Poisoned<U8>(0xFF, 1))); +} + +TEST(MemorySanitizer, Bmi) { + if (HaveBmi()) { + TestBZHI(); + TestBEXTR(); + TestPDEP(); + TestPEXT(); + } +} +#endif // defined(__x86_64__) |
