msan_test.cc revision 353c99693581d49509a553bb8d0cc9c68f43aa79 
1//===-- msan_test.cc ------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is a part of MemorySanitizer.
11//
12// MemorySanitizer unit tests.
13//===----------------------------------------------------------------------===//
14
15#ifndef MSAN_EXTERNAL_TEST_CONFIG
16#include "msan_test_config.h"
17#endif // MSAN_EXTERNAL_TEST_CONFIG
18
19#include "sanitizer/msan_interface.h"
20#include "msandr_test_so.h"
21
22#include <stdlib.h>
23#include <stdarg.h>
24#include <stdio.h>
25#include <assert.h>
26#include <wchar.h>
27#include <math.h>
28
29#include <arpa/inet.h>
30#include <dlfcn.h>
31#include <grp.h>
32#include <unistd.h>
33#include <link.h>
34#include <limits.h>
35#include <sys/time.h>
36#include <sys/types.h>
37#include <sys/stat.h>
38#include <fcntl.h>
39#include <sys/resource.h>
40#include <sys/ioctl.h>
41#include <sys/sysinfo.h>
42#include <sys/utsname.h>
43#include <sys/mman.h>
44#include <sys/vfs.h>
45#include <dirent.h>
46#include <pwd.h>
47#include <sys/socket.h>
48#include <netdb.h>
49
50#if defined(__i386__) || defined(__x86_64__)
51# include <emmintrin.h>
52# define MSAN_HAS_M128 1
53#else
54# define MSAN_HAS_M128 0
55#endif
56
57typedef unsigned char      U1;
58typedef unsigned short     U2;  // NOLINT
59typedef unsigned int       U4;
60typedef unsigned long long U8;  // NOLINT
61typedef   signed char      S1;
62typedef   signed short     S2;  // NOLINT
63typedef   signed int       S4;
64typedef   signed long long S8;  // NOLINT
65#define NOINLINE      __attribute__((noinline))
66#define INLINE      __attribute__((always_inline))
67
68static bool TrackingOrigins() {
69  S8 x;
70  __msan_set_origin(&x, sizeof(x), 0x1234);
71  U4 origin = __msan_get_origin(&x);
72  __msan_set_origin(&x, sizeof(x), 0);
73  return origin == 0x1234;
74}
75
76#define EXPECT_UMR(action) \
77    do {                        \
78      __msan_set_expect_umr(1); \
79      action;                   \
80      __msan_set_expect_umr(0); \
81    } while (0)
82
83#define EXPECT_UMR_O(action, origin) \
84    do {                                            \
85      __msan_set_expect_umr(1);                     \
86      action;                                       \
87      __msan_set_expect_umr(0);                     \
88      if (TrackingOrigins())                        \
89        EXPECT_EQ(origin, __msan_get_umr_origin()); \
90    } while (0)
91
92#define EXPECT_UMR_S(action, stack_origin) \
93    do {                                            \
94      __msan_set_expect_umr(1);                     \
95      action;                                       \
96      __msan_set_expect_umr(0);                     \
97      U4 id = __msan_get_umr_origin();             \
98      const char *str = __msan_get_origin_descr_if_stack(id); \
99      if (!str || strcmp(str, stack_origin)) {      \
100        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
101                id, stack_origin, str);  \
102        EXPECT_EQ(1, 0);                            \
103      }                                             \
104    } while (0)
105
106#define EXPECT_POISONED(x) ExpectPoisoned(x)
107
108template<typename T>
109void ExpectPoisoned(const T& t) {
110  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
111}
112
113#define EXPECT_POISONED_O(x, origin) \
114  ExpectPoisonedWithOrigin(x, origin)
115
116template<typename T>
117void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
118  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
119  if (TrackingOrigins())
120    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
121}
122
123#define EXPECT_POISONED_S(x, stack_origin) \
124  ExpectPoisonedWithStackOrigin(x, stack_origin)
125
126template<typename T>
127void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
128  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
129  U4 id = __msan_get_origin((void*)&t);
130  const char *str = __msan_get_origin_descr_if_stack(id);
131  if (!str || strcmp(str, stack_origin)) {
132    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
133        id, stack_origin, str);
134    EXPECT_EQ(1, 0);
135  }
136}
137
138#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
139
140template<typename T>
141void ExpectNotPoisoned(const T& t) {
142  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
143}
144
145static U8 poisoned_array[100];
146template<class T>
147T *GetPoisoned(int i = 0, T val = 0) {
148  T *res = (T*)&poisoned_array[i];
149  *res = val;
150  __msan_poison(&poisoned_array[i], sizeof(T));
151  return res;
152}
153
154template<class T>
155T *GetPoisonedO(int i, U4 origin, T val = 0) {
156  T *res = (T*)&poisoned_array[i];
157  *res = val;
158  __msan_poison(&poisoned_array[i], sizeof(T));
159  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
160  return res;
161}
162
163// This function returns its parameter but in such a way that compiler
164// can not prove it.
165template<class T>
166NOINLINE
167static T Ident(T t) {
168  volatile T ret = t;
169  return ret;
170}
171
172template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
173
174static volatile int g_one = 1;
175static volatile int g_zero = 0;
176static volatile int g_0 = 0;
177static volatile int g_1 = 1;
178
179S4 a_s4[100];
180S8 a_s8[100];
181
182// Check that malloc poisons memory.
183// A lot of tests below depend on this.
184TEST(MemorySanitizerSanity, PoisonInMalloc) {
185  int *x = (int*)malloc(sizeof(int));
186  EXPECT_POISONED(*x);
187  free(x);
188}
189
190TEST(MemorySanitizer, NegativeTest1) {
191  S4 *x = GetPoisoned<S4>();
192  if (g_one)
193    *x = 0;
194  EXPECT_NOT_POISONED(*x);
195}
196
197TEST(MemorySanitizer, PositiveTest1) {
198  // Load to store.
199  EXPECT_POISONED(*GetPoisoned<S1>());
200  EXPECT_POISONED(*GetPoisoned<S2>());
201  EXPECT_POISONED(*GetPoisoned<S4>());
202  EXPECT_POISONED(*GetPoisoned<S8>());
203
204  // S->S conversions.
205  EXPECT_POISONED(*GetPoisoned<S1>());
206  EXPECT_POISONED(*GetPoisoned<S1>());
207  EXPECT_POISONED(*GetPoisoned<S1>());
208
209  EXPECT_POISONED(*GetPoisoned<S2>());
210  EXPECT_POISONED(*GetPoisoned<S2>());
211  EXPECT_POISONED(*GetPoisoned<S2>());
212
213  EXPECT_POISONED(*GetPoisoned<S4>());
214  EXPECT_POISONED(*GetPoisoned<S4>());
215  EXPECT_POISONED(*GetPoisoned<S4>());
216
217  EXPECT_POISONED(*GetPoisoned<S8>());
218  EXPECT_POISONED(*GetPoisoned<S8>());
219  EXPECT_POISONED(*GetPoisoned<S8>());
220
221  // ZExt
222  EXPECT_POISONED(*GetPoisoned<U1>());
223  EXPECT_POISONED(*GetPoisoned<U1>());
224  EXPECT_POISONED(*GetPoisoned<U1>());
225  EXPECT_POISONED(*GetPoisoned<U2>());
226  EXPECT_POISONED(*GetPoisoned<U2>());
227  EXPECT_POISONED(*GetPoisoned<U4>());
228
229  // Unary ops.
230  EXPECT_POISONED(- *GetPoisoned<S4>());
231
232  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
233
234
235  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
236  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
237}
238
239TEST(MemorySanitizer, Phi1) {
240  S4 c;
241  if (g_one) {
242    c = *GetPoisoned<S4>();
243  } else {
244    break_optimization(0);
245    c = 0;
246  }
247  EXPECT_POISONED(c);
248}
249
250TEST(MemorySanitizer, Phi2) {
251  S4 i = *GetPoisoned<S4>();
252  S4 n = g_one;
253  EXPECT_UMR(for (; i < g_one; i++););
254  EXPECT_POISONED(i);
255}
256
257NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
258NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
259NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
260
261TEST(MemorySanitizer, ArgTest) {
262  Arg1ExpectUMR(*GetPoisoned<S4>());
263  Arg2ExpectUMR(0, *GetPoisoned<S4>());
264  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
265}
266
267
268TEST(MemorySanitizer, CallAndRet) {
269  if (!__msan_has_dynamic_component()) return;
270  ReturnPoisoned<S1>();
271  ReturnPoisoned<S2>();
272  ReturnPoisoned<S4>();
273  ReturnPoisoned<S8>();
274
275  EXPECT_POISONED(ReturnPoisoned<S1>());
276  EXPECT_POISONED(ReturnPoisoned<S2>());
277  EXPECT_POISONED(ReturnPoisoned<S4>());
278  EXPECT_POISONED(ReturnPoisoned<S8>());
279}
280
281// malloc() in the following test may be optimized to produce a compile-time
282// undef value. Check that we trap on the volatile assignment anyway.
283TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
284  S4 *x = (int*)malloc(sizeof(S4));
285  EXPECT_POISONED(*x);
286  free(x);
287}
288
289TEST(MemorySanitizer, Malloc) {
290  S4 *x = (int*)Ident(malloc(sizeof(S4)));
291  EXPECT_POISONED(*x);
292  free(x);
293}
294
295TEST(MemorySanitizer, Realloc) {
296  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
297  EXPECT_POISONED(x[0]);
298  x[0] = 1;
299  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
300  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
301  EXPECT_POISONED(x[1]);
302  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
303  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
304  EXPECT_POISONED(x[2]);
305  EXPECT_POISONED(x[1]);
306  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
307  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
308  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
309  EXPECT_POISONED(x[1]);
310  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
311  EXPECT_POISONED(x[1]);
312  EXPECT_POISONED(x[2]);
313  free(x);
314}
315
316TEST(MemorySanitizer, Calloc) {
317  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
318  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
319  // EXPECT_EQ(0, *x);
320  free(x);
321}
322
323TEST(MemorySanitizer, AndOr) {
324  U4 *p = GetPoisoned<U4>();
325  // We poison two bytes in the midle of a 4-byte word to make the test
326  // correct regardless of endianness.
327  ((U1*)p)[1] = 0;
328  ((U1*)p)[2] = 0xff;
329  EXPECT_NOT_POISONED(*p & 0x00ffff00);
330  EXPECT_NOT_POISONED(*p & 0x00ff0000);
331  EXPECT_NOT_POISONED(*p & 0x0000ff00);
332  EXPECT_POISONED(*p & 0xff000000);
333  EXPECT_POISONED(*p & 0x000000ff);
334  EXPECT_POISONED(*p & 0x0000ffff);
335  EXPECT_POISONED(*p & 0xffff0000);
336
337  EXPECT_NOT_POISONED(*p | 0xff0000ff);
338  EXPECT_NOT_POISONED(*p | 0xff00ffff);
339  EXPECT_NOT_POISONED(*p | 0xffff00ff);
340  EXPECT_POISONED(*p | 0xff000000);
341  EXPECT_POISONED(*p | 0x000000ff);
342  EXPECT_POISONED(*p | 0x0000ffff);
343  EXPECT_POISONED(*p | 0xffff0000);
344
345  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
346}
347
348template<class T>
349static bool applyNot(T value, T shadow) {
350  __msan_partial_poison(&value, &shadow, sizeof(T));
351  return !value;
352}
353
354TEST(MemorySanitizer, Not) {
355  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
356  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
357  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
358  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
359  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
360  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
361  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
362  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
363  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
364  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
365
366  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
367  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
368  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
369  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
370
371  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
372  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
373}
374
375TEST(MemorySanitizer, Shift) {
376  U4 *up = GetPoisoned<U4>();
377  ((U1*)up)[0] = 0;
378  ((U1*)up)[3] = 0xff;
379  EXPECT_NOT_POISONED(*up >> 30);
380  EXPECT_NOT_POISONED(*up >> 24);
381  EXPECT_POISONED(*up >> 23);
382  EXPECT_POISONED(*up >> 10);
383
384  EXPECT_NOT_POISONED(*up << 30);
385  EXPECT_NOT_POISONED(*up << 24);
386  EXPECT_POISONED(*up << 23);
387  EXPECT_POISONED(*up << 10);
388
389  S4 *sp = (S4*)up;
390  EXPECT_NOT_POISONED(*sp >> 30);
391  EXPECT_NOT_POISONED(*sp >> 24);
392  EXPECT_POISONED(*sp >> 23);
393  EXPECT_POISONED(*sp >> 10);
394
395  sp = GetPoisoned<S4>();
396  ((S1*)sp)[1] = 0;
397  ((S1*)sp)[2] = 0;
398  EXPECT_POISONED(*sp >> 31);
399
400  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
401  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
402}
403
404NOINLINE static int GetPoisonedZero() {
405  int *zero = new int;
406  *zero = 0;
407  __msan_poison(zero, sizeof(*zero));
408  int res = *zero;
409  delete zero;
410  return res;
411}
412
413TEST(MemorySanitizer, LoadFromDirtyAddress) {
414  int *a = new int;
415  *a = 0;
416  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
417  delete a;
418}
419
420TEST(MemorySanitizer, StoreToDirtyAddress) {
421  int *a = new int;
422  EXPECT_UMR(a[GetPoisonedZero()] = 0);
423  break_optimization(a);
424  delete a;
425}
426
427
428NOINLINE void StackTestFunc() {
429  S4 p4;
430  S4 ok4 = 1;
431  S2 p2;
432  S2 ok2 = 1;
433  S1 p1;
434  S1 ok1 = 1;
435  break_optimization(&p4);
436  break_optimization(&ok4);
437  break_optimization(&p2);
438  break_optimization(&ok2);
439  break_optimization(&p1);
440  break_optimization(&ok1);
441
442  EXPECT_POISONED(p4);
443  EXPECT_POISONED(p2);
444  EXPECT_POISONED(p1);
445  EXPECT_NOT_POISONED(ok1);
446  EXPECT_NOT_POISONED(ok2);
447  EXPECT_NOT_POISONED(ok4);
448}
449
450TEST(MemorySanitizer, StackTest) {
451  StackTestFunc();
452}
453
454NOINLINE void StackStressFunc() {
455  int foo[10000];
456  break_optimization(foo);
457}
458
459TEST(MemorySanitizer, DISABLED_StackStressTest) {
460  for (int i = 0; i < 1000000; i++)
461    StackStressFunc();
462}
463
464template<class T>
465void TestFloatingPoint() {
466  static volatile T v;
467  static T g[100];
468  break_optimization(&g);
469  T *x = GetPoisoned<T>();
470  T *y = GetPoisoned<T>(1);
471  EXPECT_POISONED(*x);
472  EXPECT_POISONED((long long)*x);
473  EXPECT_POISONED((int)*x);
474  g[0] = *x;
475  g[1] = *x + *y;
476  g[2] = *x - *y;
477  g[3] = *x * *y;
478}
479
480TEST(MemorySanitizer, FloatingPointTest) {
481  TestFloatingPoint<float>();
482  TestFloatingPoint<double>();
483}
484
485TEST(MemorySanitizer, DynMem) {
486  S4 x = 0;
487  S4 *y = GetPoisoned<S4>();
488  memcpy(y, &x, g_one * sizeof(S4));
489  EXPECT_NOT_POISONED(*y);
490}
491
492static char *DynRetTestStr;
493
494TEST(MemorySanitizer, DynRet) {
495  if (!__msan_has_dynamic_component()) return;
496  ReturnPoisoned<S8>();
497  EXPECT_NOT_POISONED(clearenv());
498}
499
500
501TEST(MemorySanitizer, DynRet1) {
502  if (!__msan_has_dynamic_component()) return;
503  ReturnPoisoned<S8>();
504}
505
506struct LargeStruct {
507  S4 x[10];
508};
509
510NOINLINE
511LargeStruct LargeRetTest() {
512  LargeStruct res;
513  res.x[0] = *GetPoisoned<S4>();
514  res.x[1] = *GetPoisoned<S4>();
515  res.x[2] = *GetPoisoned<S4>();
516  res.x[3] = *GetPoisoned<S4>();
517  res.x[4] = *GetPoisoned<S4>();
518  res.x[5] = *GetPoisoned<S4>();
519  res.x[6] = *GetPoisoned<S4>();
520  res.x[7] = *GetPoisoned<S4>();
521  res.x[8] = *GetPoisoned<S4>();
522  res.x[9] = *GetPoisoned<S4>();
523  return res;
524}
525
526TEST(MemorySanitizer, LargeRet) {
527  LargeStruct a = LargeRetTest();
528  EXPECT_POISONED(a.x[0]);
529  EXPECT_POISONED(a.x[9]);
530}
531
532TEST(MemorySanitizer, fread) {
533  char *x = new char[32];
534  FILE *f = fopen("/proc/self/stat", "r");
535  assert(f);
536  fread(x, 1, 32, f);
537  EXPECT_NOT_POISONED(x[0]);
538  EXPECT_NOT_POISONED(x[16]);
539  EXPECT_NOT_POISONED(x[31]);
540  fclose(f);
541  delete x;
542}
543
544TEST(MemorySanitizer, read) {
545  char *x = new char[32];
546  int fd = open("/proc/self/stat", O_RDONLY);
547  assert(fd > 0);
548  int sz = read(fd, x, 32);
549  assert(sz == 32);
550  EXPECT_NOT_POISONED(x[0]);
551  EXPECT_NOT_POISONED(x[16]);
552  EXPECT_NOT_POISONED(x[31]);
553  close(fd);
554  delete x;
555}
556
557TEST(MemorySanitizer, pread) {
558  char *x = new char[32];
559  int fd = open("/proc/self/stat", O_RDONLY);
560  assert(fd > 0);
561  int sz = pread(fd, x, 32, 0);
562  assert(sz == 32);
563  EXPECT_NOT_POISONED(x[0]);
564  EXPECT_NOT_POISONED(x[16]);
565  EXPECT_NOT_POISONED(x[31]);
566  close(fd);
567  delete x;
568}
569
570TEST(MemorySanitizer, readv) {
571  char buf[2011];
572  struct iovec iov[2];
573  iov[0].iov_base = buf + 1;
574  iov[0].iov_len = 5;
575  iov[1].iov_base = buf + 10;
576  iov[1].iov_len = 2000;
577  int fd = open("/proc/self/stat", O_RDONLY);
578  assert(fd > 0);
579  int sz = readv(fd, iov, 2);
580  ASSERT_LT(sz, 5 + 2000);
581  ASSERT_GT(sz, iov[0].iov_len);
582  EXPECT_POISONED(buf[0]);
583  EXPECT_NOT_POISONED(buf[1]);
584  EXPECT_NOT_POISONED(buf[5]);
585  EXPECT_POISONED(buf[6]);
586  EXPECT_POISONED(buf[9]);
587  EXPECT_NOT_POISONED(buf[10]);
588  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
589  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
590  close(fd);
591}
592
593TEST(MemorySanitizer, preadv) {
594  char buf[2011];
595  struct iovec iov[2];
596  iov[0].iov_base = buf + 1;
597  iov[0].iov_len = 5;
598  iov[1].iov_base = buf + 10;
599  iov[1].iov_len = 2000;
600  int fd = open("/proc/self/stat", O_RDONLY);
601  assert(fd > 0);
602  int sz = preadv(fd, iov, 2, 3);
603  ASSERT_LT(sz, 5 + 2000);
604  ASSERT_GT(sz, iov[0].iov_len);
605  EXPECT_POISONED(buf[0]);
606  EXPECT_NOT_POISONED(buf[1]);
607  EXPECT_NOT_POISONED(buf[5]);
608  EXPECT_POISONED(buf[6]);
609  EXPECT_POISONED(buf[9]);
610  EXPECT_NOT_POISONED(buf[10]);
611  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
612  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
613  close(fd);
614}
615
616// FIXME: fails now.
617TEST(MemorySanitizer, DISABLED_ioctl) {
618  struct winsize ws;
619  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
620  EXPECT_NOT_POISONED(ws.ws_col);
621}
622
623TEST(MemorySanitizer, readlink) {
624  char *x = new char[1000];
625  readlink("/proc/self/exe", x, 1000);
626  EXPECT_NOT_POISONED(x[0]);
627  delete [] x;
628}
629
630
631TEST(MemorySanitizer, stat) {
632  struct stat* st = new struct stat;
633  int res = stat("/proc/self/stat", st);
634  assert(!res);
635  EXPECT_NOT_POISONED(st->st_dev);
636  EXPECT_NOT_POISONED(st->st_mode);
637  EXPECT_NOT_POISONED(st->st_size);
638}
639
640TEST(MemorySanitizer, statfs) {
641  struct statfs* st = new struct statfs;
642  int res = statfs("/", st);
643  assert(!res);
644  EXPECT_NOT_POISONED(st->f_type);
645  EXPECT_NOT_POISONED(st->f_bfree);
646  EXPECT_NOT_POISONED(st->f_namelen);
647}
648
649TEST(MemorySanitizer, pipe) {
650  int* pipefd = new int[2];
651  int res = pipe(pipefd);
652  assert(!res);
653  EXPECT_NOT_POISONED(pipefd[0]);
654  EXPECT_NOT_POISONED(pipefd[1]);
655  close(pipefd[0]);
656  close(pipefd[1]);
657}
658
659TEST(MemorySanitizer, pipe2) {
660  int* pipefd = new int[2];
661  int res = pipe2(pipefd, O_NONBLOCK);
662  assert(!res);
663  EXPECT_NOT_POISONED(pipefd[0]);
664  EXPECT_NOT_POISONED(pipefd[1]);
665  close(pipefd[0]);
666  close(pipefd[1]);
667}
668
669TEST(MemorySanitizer, socketpair) {
670  int sv[2];
671  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
672  assert(!res);
673  EXPECT_NOT_POISONED(sv[0]);
674  EXPECT_NOT_POISONED(sv[1]);
675  close(sv[0]);
676  close(sv[1]);
677}
678
679TEST(MemorySanitizer, bind_getsockname) {
680  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
681
682  struct sockaddr_in sai;
683  memset(&sai, 0, sizeof(sai));
684  sai.sin_family = AF_UNIX;
685  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
686
687  assert(!res);
688  char buf[200];
689  socklen_t addrlen;
690  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
691
692  addrlen = sizeof(buf);
693  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
694  EXPECT_NOT_POISONED(addrlen);
695  EXPECT_NOT_POISONED(buf[0]);
696  EXPECT_NOT_POISONED(buf[addrlen - 1]);
697  EXPECT_POISONED(buf[addrlen]);
698  close(sock);
699}
700
701TEST(MemorySanitizer, accept) {
702  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
703  ASSERT_LT(0, listen_socket);
704
705  struct sockaddr_in sai;
706  sai.sin_family = AF_INET;
707  sai.sin_port = 0;
708  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
709  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
710  ASSERT_EQ(0, res);
711
712  res = listen(listen_socket, 1);
713  ASSERT_EQ(0, res);
714
715  socklen_t sz = sizeof(sai);
716  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
717  ASSERT_EQ(0, res);
718  ASSERT_EQ(sizeof(sai), sz);
719
720  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
721  ASSERT_LT(0, connect_socket);
722  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
723  ASSERT_EQ(0, res);
724  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
725  ASSERT_EQ(-1, res);
726  ASSERT_EQ(EINPROGRESS, errno);
727
728  __msan_poison(&sai, sizeof(sai));
729  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
730  ASSERT_LT(0, new_sock);
731  ASSERT_EQ(sizeof(sai), sz);
732  EXPECT_NOT_POISONED(sai);
733
734  __msan_poison(&sai, sizeof(sai));
735  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
736  ASSERT_EQ(0, res);
737  ASSERT_EQ(sizeof(sai), sz);
738  EXPECT_NOT_POISONED(sai);
739
740  close(new_sock);
741  close(connect_socket);
742  close(listen_socket);
743}
744
745TEST(MemorySanitizer, getaddrinfo) {
746  struct addrinfo *ai;
747  struct addrinfo hints;
748  memset(&hints, 0, sizeof(hints));
749  hints.ai_family = AF_INET;
750  int res = getaddrinfo("localhost", NULL, &hints, &ai);
751  ASSERT_EQ(0, res);
752  EXPECT_NOT_POISONED(*ai);
753  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
754  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
755}
756
757TEST(MemorySanitizer, getnameinfo) {
758  struct sockaddr_in sai;
759  sai.sin_family = AF_INET;
760  sai.sin_port = 80;
761  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
762  char host[500];
763  char serv[500];
764  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
765                        sizeof(host), serv, sizeof(serv), 0);
766  ASSERT_EQ(0, res);
767  EXPECT_NOT_POISONED(host[0]);
768  EXPECT_POISONED(host[sizeof(host) - 1]);
769
770  ASSERT_NE(0, strlen(host));
771  EXPECT_NOT_POISONED(serv[0]);
772  EXPECT_POISONED(serv[sizeof(serv) - 1]);
773  ASSERT_NE(0, strlen(serv));
774}
775
776#define EXPECT_HOSTENT_NOT_POISONED(he)        \
777  do {                                         \
778    EXPECT_NOT_POISONED(*(he));                \
779    ASSERT_NE((void *) 0, (he)->h_name);       \
780    ASSERT_NE((void *) 0, (he)->h_aliases);    \
781    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
782    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
783    char **p = (he)->h_aliases;                \
784    while (*p) {                               \
785      EXPECT_NOT_POISONED(strlen(*p));         \
786      ++p;                                     \
787    }                                          \
788    char **q = (he)->h_addr_list;              \
789    while (*q) {                               \
790      EXPECT_NOT_POISONED(*q[0]);              \
791      ++q;                                     \
792    }                                          \
793    EXPECT_NOT_POISONED(*q);                   \
794  } while (0)
795
796TEST(MemorySanitizer, gethostent) {
797  struct hostent *he = gethostent();
798  ASSERT_NE((void *)NULL, he);
799  EXPECT_HOSTENT_NOT_POISONED(he);
800}
801
802#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
803
804TEST(MemorySanitizer, gethostbyname) {
805  struct hostent *he = gethostbyname("localhost");
806  ASSERT_NE((void *)NULL, he);
807  EXPECT_HOSTENT_NOT_POISONED(he);
808}
809
810#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
811
812TEST(MemorySanitizer, gethostbyname2) {
813  struct hostent *he = gethostbyname2("localhost", AF_INET);
814  ASSERT_NE((void *)NULL, he);
815  EXPECT_HOSTENT_NOT_POISONED(he);
816}
817
818TEST(MemorySanitizer, gethostbyaddr) {
819  in_addr_t addr = inet_addr("127.0.0.1");
820  EXPECT_NOT_POISONED(addr);
821  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
822  ASSERT_NE((void *)NULL, he);
823  EXPECT_HOSTENT_NOT_POISONED(he);
824}
825
826TEST(MemorySanitizer, gethostent_r) {
827  char buf[2000];
828  struct hostent he;
829  struct hostent *result;
830  int err;
831  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
832  ASSERT_EQ(0, res);
833  EXPECT_NOT_POISONED(result);
834  ASSERT_NE((void *)NULL, result);
835  EXPECT_HOSTENT_NOT_POISONED(result);
836  EXPECT_NOT_POISONED(err);
837}
838
839TEST(MemorySanitizer, gethostbyname_r) {
840  char buf[2000];
841  struct hostent he;
842  struct hostent *result;
843  int err;
844  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
845  ASSERT_EQ(0, res);
846  EXPECT_NOT_POISONED(result);
847  ASSERT_NE((void *)NULL, result);
848  EXPECT_HOSTENT_NOT_POISONED(result);
849  EXPECT_NOT_POISONED(err);
850}
851
852TEST(MemorySanitizer, gethostbyname2_r) {
853  char buf[2000];
854  struct hostent he;
855  struct hostent *result;
856  int err;
857  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
858                             &result, &err);
859  ASSERT_EQ(0, res);
860  EXPECT_NOT_POISONED(result);
861  ASSERT_NE((void *)NULL, result);
862  EXPECT_HOSTENT_NOT_POISONED(result);
863  EXPECT_NOT_POISONED(err);
864}
865
866TEST(MemorySanitizer, gethostbyaddr_r) {
867  char buf[2000];
868  struct hostent he;
869  struct hostent *result;
870  int err;
871  in_addr_t addr = inet_addr("127.0.0.1");
872  EXPECT_NOT_POISONED(addr);
873  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
874                            &result, &err);
875  ASSERT_EQ(0, res);
876  EXPECT_NOT_POISONED(result);
877  ASSERT_NE((void *)NULL, result);
878  EXPECT_HOSTENT_NOT_POISONED(result);
879  EXPECT_NOT_POISONED(err);
880}
881
882TEST(MemorySanitizer, getsockopt) {
883  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
884  struct linger l[2];
885  socklen_t sz = sizeof(l[0]);
886  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
887  ASSERT_EQ(0, res);
888  ASSERT_EQ(sizeof(l[0]), sz);
889  EXPECT_NOT_POISONED(l[0]);
890  EXPECT_POISONED(*(char *)(l + 1));
891}
892
893TEST(MemorySanitizer, getcwd) {
894  char path[PATH_MAX + 1];
895  char* res = getcwd(path, sizeof(path));
896  assert(res);
897  EXPECT_NOT_POISONED(path[0]);
898}
899
900TEST(MemorySanitizer, getcwd_gnu) {
901  char* res = getcwd(NULL, 0);
902  assert(res);
903  EXPECT_NOT_POISONED(res[0]);
904  free(res);
905}
906
907TEST(MemorySanitizer, get_current_dir_name) {
908  char* res = get_current_dir_name();
909  assert(res);
910  EXPECT_NOT_POISONED(res[0]);
911  free(res);
912}
913
914TEST(MemorySanitizer, readdir) {
915  DIR *dir = opendir(".");
916  struct dirent *d = readdir(dir);
917  assert(d);
918  EXPECT_NOT_POISONED(d->d_name[0]);
919  closedir(dir);
920}
921
922TEST(MemorySanitizer, readdir_r) {
923  DIR *dir = opendir(".");
924  struct dirent d;
925  struct dirent *pd;
926  int res = readdir_r(dir, &d, &pd);
927  assert(!res);
928  EXPECT_NOT_POISONED(pd);
929  EXPECT_NOT_POISONED(d.d_name[0]);
930  closedir(dir);
931}
932
933TEST(MemorySanitizer, realpath) {
934  const char* relpath = ".";
935  char path[PATH_MAX + 1];
936  char* res = realpath(relpath, path);
937  assert(res);
938  EXPECT_NOT_POISONED(path[0]);
939}
940
941TEST(MemorySanitizer, memcpy) {
942  char* x = new char[2];
943  char* y = new char[2];
944  x[0] = 1;
945  x[1] = *GetPoisoned<char>();
946  memcpy(y, x, 2);
947  EXPECT_NOT_POISONED(y[0]);
948  EXPECT_POISONED(y[1]);
949}
950
951TEST(MemorySanitizer, memmove) {
952  char* x = new char[2];
953  char* y = new char[2];
954  x[0] = 1;
955  x[1] = *GetPoisoned<char>();
956  memmove(y, x, 2);
957  EXPECT_NOT_POISONED(y[0]);
958  EXPECT_POISONED(y[1]);
959}
960
961TEST(MemorySanitizer, strdup) {
962  char buf[4] = "abc";
963  __msan_poison(buf + 2, sizeof(*buf));
964  char *x = strdup(buf);
965  EXPECT_NOT_POISONED(x[0]);
966  EXPECT_NOT_POISONED(x[1]);
967  EXPECT_POISONED(x[2]);
968  EXPECT_NOT_POISONED(x[3]);
969  free(x);
970}
971
972TEST(MemorySanitizer, strndup) {
973  char buf[4] = "abc";
974  __msan_poison(buf + 2, sizeof(*buf));
975  char *x = strndup(buf, 3);
976  EXPECT_NOT_POISONED(x[0]);
977  EXPECT_NOT_POISONED(x[1]);
978  EXPECT_POISONED(x[2]);
979  EXPECT_NOT_POISONED(x[3]);
980  free(x);
981}
982
983TEST(MemorySanitizer, strndup_short) {
984  char buf[4] = "abc";
985  __msan_poison(buf + 1, sizeof(*buf));
986  __msan_poison(buf + 2, sizeof(*buf));
987  char *x = strndup(buf, 2);
988  EXPECT_NOT_POISONED(x[0]);
989  EXPECT_POISONED(x[1]);
990  EXPECT_NOT_POISONED(x[2]);
991  free(x);
992}
993
994
995template<class T, int size>
996void TestOverlapMemmove() {
997  T *x = new T[size];
998  assert(size >= 3);
999  x[2] = 0;
1000  memmove(x, x + 1, (size - 1) * sizeof(T));
1001  EXPECT_NOT_POISONED(x[1]);
1002  if (!__msan_has_dynamic_component()) {
1003    // FIXME: under DR we will lose this information
1004    // because accesses in memmove will unpoisin the shadow.
1005    // We need to use our own memove implementation instead of libc's.
1006    EXPECT_POISONED(x[0]);
1007    EXPECT_POISONED(x[2]);
1008  }
1009  delete [] x;
1010}
1011
1012TEST(MemorySanitizer, overlap_memmove) {
1013  TestOverlapMemmove<U1, 10>();
1014  TestOverlapMemmove<U1, 1000>();
1015  TestOverlapMemmove<U8, 4>();
1016  TestOverlapMemmove<U8, 1000>();
1017}
1018
1019TEST(MemorySanitizer, strcpy) {  // NOLINT
1020  char* x = new char[3];
1021  char* y = new char[3];
1022  x[0] = 'a';
1023  x[1] = *GetPoisoned<char>(1, 1);
1024  x[2] = 0;
1025  strcpy(y, x);  // NOLINT
1026  EXPECT_NOT_POISONED(y[0]);
1027  EXPECT_POISONED(y[1]);
1028  EXPECT_NOT_POISONED(y[2]);
1029}
1030
1031TEST(MemorySanitizer, strncpy) {  // NOLINT
1032  char* x = new char[3];
1033  char* y = new char[3];
1034  x[0] = 'a';
1035  x[1] = *GetPoisoned<char>(1, 1);
1036  x[2] = 0;
1037  strncpy(y, x, 2);  // NOLINT
1038  EXPECT_NOT_POISONED(y[0]);
1039  EXPECT_POISONED(y[1]);
1040  EXPECT_POISONED(y[2]);
1041}
1042
1043TEST(MemorySanitizer, stpcpy) {  // NOLINT
1044  char* x = new char[3];
1045  char* y = new char[3];
1046  x[0] = 'a';
1047  x[1] = *GetPoisoned<char>(1, 1);
1048  x[2] = 0;
1049  char *res = stpcpy(y, x);  // NOLINT
1050  ASSERT_EQ(res, y + 2);
1051  EXPECT_NOT_POISONED(y[0]);
1052  EXPECT_POISONED(y[1]);
1053  EXPECT_NOT_POISONED(y[2]);
1054}
1055
1056TEST(MemorySanitizer, strtol) {
1057  char *e;
1058  assert(1 == strtol("1", &e, 10));
1059  EXPECT_NOT_POISONED((S8) e);
1060}
1061
1062TEST(MemorySanitizer, strtoll) {
1063  char *e;
1064  assert(1 == strtoll("1", &e, 10));
1065  EXPECT_NOT_POISONED((S8) e);
1066}
1067
1068TEST(MemorySanitizer, strtoul) {
1069  char *e;
1070  assert(1 == strtoul("1", &e, 10));
1071  EXPECT_NOT_POISONED((S8) e);
1072}
1073
1074TEST(MemorySanitizer, strtoull) {
1075  char *e;
1076  assert(1 == strtoull("1", &e, 10));
1077  EXPECT_NOT_POISONED((S8) e);
1078}
1079
1080TEST(MemorySanitizer, strtod) {
1081  char *e;
1082  assert(0 != strtod("1.5", &e));
1083  EXPECT_NOT_POISONED((S8) e);
1084}
1085
1086TEST(MemorySanitizer, strtof) {
1087  char *e;
1088  assert(0 != strtof("1.5", &e));
1089  EXPECT_NOT_POISONED((S8) e);
1090}
1091
1092TEST(MemorySanitizer, strtold) {
1093  char *e;
1094  assert(0 != strtold("1.5", &e));
1095  EXPECT_NOT_POISONED((S8) e);
1096}
1097
1098TEST(MemorySanitizer, modf) {
1099  double x, y;
1100  x = modf(2.1, &y);
1101  EXPECT_NOT_POISONED(y);
1102}
1103
1104TEST(MemorySanitizer, modff) {
1105  float x, y;
1106  x = modff(2.1, &y);
1107  EXPECT_NOT_POISONED(y);
1108}
1109
1110TEST(MemorySanitizer, modfl) {
1111  long double x, y;
1112  x = modfl(2.1, &y);
1113  EXPECT_NOT_POISONED(y);
1114}
1115
1116TEST(MemorySanitizer, sprintf) {  // NOLINT
1117  char buff[10];
1118  break_optimization(buff);
1119  EXPECT_POISONED(buff[0]);
1120  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1121  assert(res == 7);
1122  assert(buff[0] == '1');
1123  assert(buff[1] == '2');
1124  assert(buff[2] == '3');
1125  assert(buff[6] == '7');
1126  assert(buff[7] == 0);
1127  EXPECT_POISONED(buff[8]);
1128}
1129
1130TEST(MemorySanitizer, snprintf) {
1131  char buff[10];
1132  break_optimization(buff);
1133  EXPECT_POISONED(buff[0]);
1134  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1135  assert(res == 7);
1136  assert(buff[0] == '1');
1137  assert(buff[1] == '2');
1138  assert(buff[2] == '3');
1139  assert(buff[6] == '7');
1140  assert(buff[7] == 0);
1141  EXPECT_POISONED(buff[8]);
1142}
1143
1144TEST(MemorySanitizer, swprintf) {
1145  wchar_t buff[10];
1146  assert(sizeof(wchar_t) == 4);
1147  break_optimization(buff);
1148  EXPECT_POISONED(buff[0]);
1149  int res = swprintf(buff, 9, L"%d", 1234567);
1150  assert(res == 7);
1151  assert(buff[0] == '1');
1152  assert(buff[1] == '2');
1153  assert(buff[2] == '3');
1154  assert(buff[6] == '7');
1155  assert(buff[7] == 0);
1156  EXPECT_POISONED(buff[8]);
1157}
1158
1159TEST(MemorySanitizer, asprintf) {  // NOLINT
1160  char *pbuf;
1161  EXPECT_POISONED(pbuf);
1162  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1163  assert(res == 7);
1164  EXPECT_NOT_POISONED(pbuf);
1165  assert(pbuf[0] == '1');
1166  assert(pbuf[1] == '2');
1167  assert(pbuf[2] == '3');
1168  assert(pbuf[6] == '7');
1169  assert(pbuf[7] == 0);
1170  free(pbuf);
1171}
1172
1173TEST(MemorySanitizer, wcstombs) {
1174  const wchar_t *x = L"abc";
1175  char buff[10];
1176  int res = wcstombs(buff, x, 4);
1177  EXPECT_EQ(res, 3);
1178  EXPECT_EQ(buff[0], 'a');
1179  EXPECT_EQ(buff[1], 'b');
1180  EXPECT_EQ(buff[2], 'c');
1181}
1182
1183TEST(MemorySanitizer, mbtowc) {
1184  const char *x = "abc";
1185  wchar_t wx;
1186  int res = mbtowc(&wx, x, 3);
1187  EXPECT_GT(res, 0);
1188  EXPECT_NOT_POISONED(wx);
1189}
1190
1191TEST(MemorySanitizer, mbrtowc) {
1192  const char *x = "abc";
1193  wchar_t wx;
1194  mbstate_t mbs;
1195  memset(&mbs, 0, sizeof(mbs));
1196  int res = mbrtowc(&wx, x, 3, &mbs);
1197  EXPECT_GT(res, 0);
1198  EXPECT_NOT_POISONED(wx);
1199}
1200
1201TEST(MemorySanitizer, gettimeofday) {
1202  struct timeval tv;
1203  struct timezone tz;
1204  break_optimization(&tv);
1205  break_optimization(&tz);
1206  assert(sizeof(tv) == 16);
1207  assert(sizeof(tz) == 8);
1208  EXPECT_POISONED(tv.tv_sec);
1209  EXPECT_POISONED(tv.tv_usec);
1210  EXPECT_POISONED(tz.tz_minuteswest);
1211  EXPECT_POISONED(tz.tz_dsttime);
1212  assert(0 == gettimeofday(&tv, &tz));
1213  EXPECT_NOT_POISONED(tv.tv_sec);
1214  EXPECT_NOT_POISONED(tv.tv_usec);
1215  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1216  EXPECT_NOT_POISONED(tz.tz_dsttime);
1217}
1218
1219TEST(MemorySanitizer, clock_gettime) {
1220  struct timespec tp;
1221  EXPECT_POISONED(tp.tv_sec);
1222  EXPECT_POISONED(tp.tv_nsec);
1223  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1224  EXPECT_NOT_POISONED(tp.tv_sec);
1225  EXPECT_NOT_POISONED(tp.tv_nsec);
1226}
1227
1228TEST(MemorySanitizer, clock_getres) {
1229  struct timespec tp;
1230  EXPECT_POISONED(tp.tv_sec);
1231  EXPECT_POISONED(tp.tv_nsec);
1232  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1233  EXPECT_POISONED(tp.tv_sec);
1234  EXPECT_POISONED(tp.tv_nsec);
1235  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1236  EXPECT_NOT_POISONED(tp.tv_sec);
1237  EXPECT_NOT_POISONED(tp.tv_nsec);
1238}
1239
1240TEST(MemorySanitizer, getitimer) {
1241  struct itimerval it1, it2;
1242  int res;
1243  EXPECT_POISONED(it1.it_interval.tv_sec);
1244  EXPECT_POISONED(it1.it_interval.tv_usec);
1245  EXPECT_POISONED(it1.it_value.tv_sec);
1246  EXPECT_POISONED(it1.it_value.tv_usec);
1247  res = getitimer(ITIMER_VIRTUAL, &it1);
1248  assert(!res);
1249  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1250  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1251  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1252  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1253
1254  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1255  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1256
1257  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1258  assert(!res);
1259  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1260  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1261  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1262  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1263
1264  // Check that old_value can be 0, and disable the timer.
1265  memset(&it1, 0, sizeof(it1));
1266  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1267  assert(!res);
1268}
1269
1270TEST(MemorySanitizer, time) {
1271  time_t t;
1272  EXPECT_POISONED(t);
1273  time_t t2 = time(&t);
1274  assert(t2 != (time_t)-1);
1275  EXPECT_NOT_POISONED(t);
1276}
1277
1278TEST(MemorySanitizer, localtime) {
1279  time_t t = 123;
1280  struct tm *time = localtime(&t);
1281  assert(time != 0);
1282  EXPECT_NOT_POISONED(time->tm_sec);
1283  EXPECT_NOT_POISONED(time->tm_hour);
1284  EXPECT_NOT_POISONED(time->tm_year);
1285  EXPECT_NOT_POISONED(time->tm_isdst);
1286}
1287
1288TEST(MemorySanitizer, localtime_r) {
1289  time_t t = 123;
1290  struct tm time;
1291  struct tm *res = localtime_r(&t, &time);
1292  assert(res != 0);
1293  EXPECT_NOT_POISONED(time.tm_sec);
1294  EXPECT_NOT_POISONED(time.tm_hour);
1295  EXPECT_NOT_POISONED(time.tm_year);
1296  EXPECT_NOT_POISONED(time.tm_isdst);
1297}
1298
1299TEST(MemorySanitizer, mmap) {
1300  const int size = 4096;
1301  void *p1, *p2;
1302  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1303  __msan_poison(p1, size);
1304  munmap(p1, size);
1305  for (int i = 0; i < 1000; i++) {
1306    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1307    if (p2 == p1)
1308      break;
1309    else
1310      munmap(p2, size);
1311  }
1312  if (p1 == p2) {
1313    EXPECT_NOT_POISONED(*(char*)p2);
1314    munmap(p2, size);
1315  }
1316}
1317
1318// FIXME: enable and add ecvt.
1319// FIXME: check why msandr does nt handle fcvt.
1320TEST(MemorySanitizer, fcvt) {
1321  int a, b;
1322  break_optimization(&a);
1323  break_optimization(&b);
1324  EXPECT_POISONED(a);
1325  EXPECT_POISONED(b);
1326  char *str = fcvt(12345.6789, 10, &a, &b);
1327  EXPECT_NOT_POISONED(a);
1328  EXPECT_NOT_POISONED(b);
1329}
1330
1331TEST(MemorySanitizer, frexp) {
1332  int x;
1333  x = *GetPoisoned<int>();
1334  double r = frexp(1.1, &x);
1335  EXPECT_NOT_POISONED(r);
1336  EXPECT_NOT_POISONED(x);
1337
1338  x = *GetPoisoned<int>();
1339  float rf = frexpf(1.1, &x);
1340  EXPECT_NOT_POISONED(rf);
1341  EXPECT_NOT_POISONED(x);
1342
1343  x = *GetPoisoned<int>();
1344  double rl = frexpl(1.1, &x);
1345  EXPECT_NOT_POISONED(rl);
1346  EXPECT_NOT_POISONED(x);
1347}
1348
1349namespace {
1350
1351static int cnt;
1352
1353void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1354  assert(signo == SIGPROF);
1355  assert(si);
1356  EXPECT_NOT_POISONED(si->si_errno);
1357  EXPECT_NOT_POISONED(si->si_pid);
1358#if __linux__
1359# if defined(__x86_64__)
1360  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1361# elif defined(__i386__)
1362  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1363# endif
1364#endif
1365  ++cnt;
1366}
1367
1368TEST(MemorySanitizer, sigaction) {
1369  struct sigaction act = {};
1370  struct sigaction oldact = {};
1371  struct sigaction origact = {};
1372
1373  sigaction(SIGPROF, 0, &origact);
1374
1375  act.sa_flags |= SA_SIGINFO;
1376  act.sa_sigaction = &SigactionHandler;
1377  sigaction(SIGPROF, &act, 0);
1378
1379  kill(getpid(), SIGPROF);
1380
1381  act.sa_flags &= ~SA_SIGINFO;
1382  act.sa_handler = SIG_DFL;
1383  sigaction(SIGPROF, &act, 0);
1384
1385  act.sa_flags &= ~SA_SIGINFO;
1386  act.sa_handler = SIG_IGN;
1387  sigaction(SIGPROF, &act, &oldact);
1388  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1389  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1390  kill(getpid(), SIGPROF);
1391
1392  act.sa_flags |= SA_SIGINFO;
1393  act.sa_sigaction = &SigactionHandler;
1394  sigaction(SIGPROF, &act, &oldact);
1395  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1396  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1397  kill(getpid(), SIGPROF);
1398
1399  act.sa_flags &= ~SA_SIGINFO;
1400  act.sa_handler = SIG_DFL;
1401  sigaction(SIGPROF, &act, &oldact);
1402  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1403  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1404  EXPECT_EQ(2, cnt);
1405
1406  sigaction(SIGPROF, &origact, 0);
1407}
1408
1409} // namespace
1410
1411struct StructWithDtor {
1412  ~StructWithDtor();
1413};
1414
1415NOINLINE StructWithDtor::~StructWithDtor() {
1416  break_optimization(0);
1417}
1418
1419TEST(MemorySanitizer, Invoke) {
1420  StructWithDtor s;  // Will cause the calls to become invokes.
1421  EXPECT_NOT_POISONED(0);
1422  EXPECT_POISONED(*GetPoisoned<int>());
1423  EXPECT_NOT_POISONED(0);
1424  EXPECT_POISONED(*GetPoisoned<int>());
1425  EXPECT_POISONED(ReturnPoisoned<S4>());
1426}
1427
1428TEST(MemorySanitizer, ptrtoint) {
1429  // Test that shadow is propagated through pointer-to-integer conversion.
1430  void* p = (void*)0xABCD;
1431  __msan_poison(((char*)&p) + 1, sizeof(p));
1432  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1433
1434  void* q = (void*)0xABCD;
1435  __msan_poison(&q, sizeof(q) - 1);
1436  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1437}
1438
1439static void vaargsfn2(int guard, ...) {
1440  va_list vl;
1441  va_start(vl, guard);
1442  EXPECT_NOT_POISONED(va_arg(vl, int));
1443  EXPECT_NOT_POISONED(va_arg(vl, int));
1444  EXPECT_NOT_POISONED(va_arg(vl, int));
1445  EXPECT_POISONED(va_arg(vl, double));
1446  va_end(vl);
1447}
1448
1449static void vaargsfn(int guard, ...) {
1450  va_list vl;
1451  va_start(vl, guard);
1452  EXPECT_NOT_POISONED(va_arg(vl, int));
1453  EXPECT_POISONED(va_arg(vl, int));
1454  // The following call will overwrite __msan_param_tls.
1455  // Checks after it test that arg shadow was somehow saved across the call.
1456  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1457  EXPECT_NOT_POISONED(va_arg(vl, int));
1458  EXPECT_POISONED(va_arg(vl, int));
1459  va_end(vl);
1460}
1461
1462TEST(MemorySanitizer, VAArgTest) {
1463  int* x = GetPoisoned<int>();
1464  int* y = GetPoisoned<int>(4);
1465  vaargsfn(1, 13, *x, 42, *y);
1466}
1467
1468static void vaargsfn_many(int guard, ...) {
1469  va_list vl;
1470  va_start(vl, guard);
1471  EXPECT_NOT_POISONED(va_arg(vl, int));
1472  EXPECT_POISONED(va_arg(vl, int));
1473  EXPECT_NOT_POISONED(va_arg(vl, int));
1474  EXPECT_NOT_POISONED(va_arg(vl, int));
1475  EXPECT_NOT_POISONED(va_arg(vl, int));
1476  EXPECT_NOT_POISONED(va_arg(vl, int));
1477  EXPECT_NOT_POISONED(va_arg(vl, int));
1478  EXPECT_NOT_POISONED(va_arg(vl, int));
1479  EXPECT_NOT_POISONED(va_arg(vl, int));
1480  EXPECT_POISONED(va_arg(vl, int));
1481  va_end(vl);
1482}
1483
1484TEST(MemorySanitizer, VAArgManyTest) {
1485  int* x = GetPoisoned<int>();
1486  int* y = GetPoisoned<int>(4);
1487  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1488}
1489
1490static void vaargsfn_pass2(va_list vl) {
1491  EXPECT_NOT_POISONED(va_arg(vl, int));
1492  EXPECT_NOT_POISONED(va_arg(vl, int));
1493  EXPECT_POISONED(va_arg(vl, int));
1494}
1495
1496static void vaargsfn_pass(int guard, ...) {
1497  va_list vl;
1498  va_start(vl, guard);
1499  EXPECT_POISONED(va_arg(vl, int));
1500  vaargsfn_pass2(vl);
1501  va_end(vl);
1502}
1503
1504TEST(MemorySanitizer, VAArgPass) {
1505  int* x = GetPoisoned<int>();
1506  int* y = GetPoisoned<int>(4);
1507  vaargsfn_pass(1, *x, 2, 3, *y);
1508}
1509
1510static void vaargsfn_copy2(va_list vl) {
1511  EXPECT_NOT_POISONED(va_arg(vl, int));
1512  EXPECT_POISONED(va_arg(vl, int));
1513}
1514
1515static void vaargsfn_copy(int guard, ...) {
1516  va_list vl;
1517  va_start(vl, guard);
1518  EXPECT_NOT_POISONED(va_arg(vl, int));
1519  EXPECT_POISONED(va_arg(vl, int));
1520  va_list vl2;
1521  va_copy(vl2, vl);
1522  vaargsfn_copy2(vl2);
1523  EXPECT_NOT_POISONED(va_arg(vl, int));
1524  EXPECT_POISONED(va_arg(vl, int));
1525  va_end(vl);
1526}
1527
1528TEST(MemorySanitizer, VAArgCopy) {
1529  int* x = GetPoisoned<int>();
1530  int* y = GetPoisoned<int>(4);
1531  vaargsfn_copy(1, 2, *x, 3, *y);
1532}
1533
1534static void vaargsfn_ptr(int guard, ...) {
1535  va_list vl;
1536  va_start(vl, guard);
1537  EXPECT_NOT_POISONED(va_arg(vl, int*));
1538  EXPECT_POISONED(va_arg(vl, int*));
1539  EXPECT_NOT_POISONED(va_arg(vl, int*));
1540  EXPECT_POISONED(va_arg(vl, double*));
1541  va_end(vl);
1542}
1543
1544TEST(MemorySanitizer, VAArgPtr) {
1545  int** x = GetPoisoned<int*>();
1546  double** y = GetPoisoned<double*>(8);
1547  int z;
1548  vaargsfn_ptr(1, &z, *x, &z, *y);
1549}
1550
1551static void vaargsfn_overflow(int guard, ...) {
1552  va_list vl;
1553  va_start(vl, guard);
1554  EXPECT_NOT_POISONED(va_arg(vl, int));
1555  EXPECT_NOT_POISONED(va_arg(vl, int));
1556  EXPECT_POISONED(va_arg(vl, int));
1557  EXPECT_NOT_POISONED(va_arg(vl, int));
1558  EXPECT_NOT_POISONED(va_arg(vl, int));
1559  EXPECT_NOT_POISONED(va_arg(vl, int));
1560
1561  EXPECT_NOT_POISONED(va_arg(vl, double));
1562  EXPECT_NOT_POISONED(va_arg(vl, double));
1563  EXPECT_NOT_POISONED(va_arg(vl, double));
1564  EXPECT_POISONED(va_arg(vl, double));
1565  EXPECT_NOT_POISONED(va_arg(vl, double));
1566  EXPECT_POISONED(va_arg(vl, int*));
1567  EXPECT_NOT_POISONED(va_arg(vl, double));
1568  EXPECT_NOT_POISONED(va_arg(vl, double));
1569
1570  EXPECT_POISONED(va_arg(vl, int));
1571  EXPECT_POISONED(va_arg(vl, double));
1572  EXPECT_POISONED(va_arg(vl, int*));
1573
1574  EXPECT_NOT_POISONED(va_arg(vl, int));
1575  EXPECT_NOT_POISONED(va_arg(vl, double));
1576  EXPECT_NOT_POISONED(va_arg(vl, int*));
1577
1578  EXPECT_POISONED(va_arg(vl, int));
1579  EXPECT_POISONED(va_arg(vl, double));
1580  EXPECT_POISONED(va_arg(vl, int*));
1581
1582  va_end(vl);
1583}
1584
1585TEST(MemorySanitizer, VAArgOverflow) {
1586  int* x = GetPoisoned<int>();
1587  double* y = GetPoisoned<double>(8);
1588  int** p = GetPoisoned<int*>(16);
1589  int z;
1590  vaargsfn_overflow(1,
1591      1, 2, *x, 4, 5, 6,
1592      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1593      // the following args will overflow for sure
1594      *x, *y, *p,
1595      7, 9.9, &z,
1596      *x, *y, *p);
1597}
1598
1599static void vaargsfn_tlsoverwrite2(int guard, ...) {
1600  va_list vl;
1601  va_start(vl, guard);
1602  EXPECT_NOT_POISONED(va_arg(vl, int));
1603  va_end(vl);
1604}
1605
1606static void vaargsfn_tlsoverwrite(int guard, ...) {
1607  // This call will overwrite TLS contents unless it's backed up somewhere.
1608  vaargsfn_tlsoverwrite2(2, 42);
1609  va_list vl;
1610  va_start(vl, guard);
1611  EXPECT_POISONED(va_arg(vl, int));
1612  va_end(vl);
1613}
1614
1615TEST(MemorySanitizer, VAArgTLSOverwrite) {
1616  int* x = GetPoisoned<int>();
1617  vaargsfn_tlsoverwrite(1, *x);
1618}
1619
1620struct StructByVal {
1621  int a, b, c, d, e, f;
1622};
1623
1624NOINLINE void StructByValTestFunc(struct StructByVal s) {
1625  EXPECT_NOT_POISONED(s.a);
1626  EXPECT_POISONED(s.b);
1627  EXPECT_NOT_POISONED(s.c);
1628  EXPECT_POISONED(s.d);
1629  EXPECT_NOT_POISONED(s.e);
1630  EXPECT_POISONED(s.f);
1631}
1632
1633NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1634  StructByValTestFunc(s);
1635}
1636
1637NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1638  StructByValTestFunc(s);
1639}
1640
1641TEST(MemorySanitizer, StructByVal) {
1642  // Large aggregates are passed as "byval" pointer argument in LLVM.
1643  struct StructByVal s;
1644  s.a = 1;
1645  s.b = *GetPoisoned<int>();
1646  s.c = 2;
1647  s.d = *GetPoisoned<int>();
1648  s.e = 3;
1649  s.f = *GetPoisoned<int>();
1650  StructByValTestFunc(s);
1651  StructByValTestFunc1(s);
1652  StructByValTestFunc2(0, s);
1653}
1654
1655
1656#if MSAN_HAS_M128
1657NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1658NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1659TEST(MemorySanitizer, m128) {
1660  __m128i a = _mm_set1_epi16(0x1234);
1661  __m128i b = _mm_set1_epi16(0x7890);
1662  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1663  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1664}
1665// FIXME: add more tests for __m128i.
1666#endif  // MSAN_HAS_M128
1667
1668// We should not complain when copying this poisoned hole.
1669struct StructWithHole {
1670  U4  a;
1671  // 4-byte hole.
1672  U8  b;
1673};
1674
1675NOINLINE StructWithHole ReturnStructWithHole() {
1676  StructWithHole res;
1677  __msan_poison(&res, sizeof(res));
1678  res.a = 1;
1679  res.b = 2;
1680  return res;
1681}
1682
1683TEST(MemorySanitizer, StructWithHole) {
1684  StructWithHole a = ReturnStructWithHole();
1685  break_optimization(&a);
1686}
1687
1688template <class T>
1689NOINLINE T ReturnStruct() {
1690  T res;
1691  __msan_poison(&res, sizeof(res));
1692  res.a = 1;
1693  return res;
1694}
1695
1696template <class T>
1697NOINLINE void TestReturnStruct() {
1698  T s1 = ReturnStruct<T>();
1699  EXPECT_NOT_POISONED(s1.a);
1700  EXPECT_POISONED(s1.b);
1701}
1702
1703struct SSS1 {
1704  int a, b, c;
1705};
1706struct SSS2 {
1707  int b, a, c;
1708};
1709struct SSS3 {
1710  int b, c, a;
1711};
1712struct SSS4 {
1713  int c, b, a;
1714};
1715
1716struct SSS5 {
1717  int a;
1718  float b;
1719};
1720struct SSS6 {
1721  int a;
1722  double b;
1723};
1724struct SSS7 {
1725  S8 b;
1726  int a;
1727};
1728struct SSS8 {
1729  S2 b;
1730  S8 a;
1731};
1732
1733TEST(MemorySanitizer, IntStruct3) {
1734  TestReturnStruct<SSS1>();
1735  TestReturnStruct<SSS2>();
1736  TestReturnStruct<SSS3>();
1737  TestReturnStruct<SSS4>();
1738  TestReturnStruct<SSS5>();
1739  TestReturnStruct<SSS6>();
1740  TestReturnStruct<SSS7>();
1741  TestReturnStruct<SSS8>();
1742}
1743
1744struct LongStruct {
1745  U1 a1, b1;
1746  U2 a2, b2;
1747  U4 a4, b4;
1748  U8 a8, b8;
1749};
1750
1751NOINLINE LongStruct ReturnLongStruct1() {
1752  LongStruct res;
1753  __msan_poison(&res, sizeof(res));
1754  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1755  // leaves b1, .., b8 poisoned.
1756  return res;
1757}
1758
1759NOINLINE LongStruct ReturnLongStruct2() {
1760  LongStruct res;
1761  __msan_poison(&res, sizeof(res));
1762  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1763  // leaves a1, .., a8 poisoned.
1764  return res;
1765}
1766
1767TEST(MemorySanitizer, LongStruct) {
1768  LongStruct s1 = ReturnLongStruct1();
1769  __msan_print_shadow(&s1, sizeof(s1));
1770  EXPECT_NOT_POISONED(s1.a1);
1771  EXPECT_NOT_POISONED(s1.a2);
1772  EXPECT_NOT_POISONED(s1.a4);
1773  EXPECT_NOT_POISONED(s1.a8);
1774
1775  EXPECT_POISONED(s1.b1);
1776  EXPECT_POISONED(s1.b2);
1777  EXPECT_POISONED(s1.b4);
1778  EXPECT_POISONED(s1.b8);
1779
1780  LongStruct s2 = ReturnLongStruct2();
1781  __msan_print_shadow(&s2, sizeof(s2));
1782  EXPECT_NOT_POISONED(s2.b1);
1783  EXPECT_NOT_POISONED(s2.b2);
1784  EXPECT_NOT_POISONED(s2.b4);
1785  EXPECT_NOT_POISONED(s2.b8);
1786
1787  EXPECT_POISONED(s2.a1);
1788  EXPECT_POISONED(s2.a2);
1789  EXPECT_POISONED(s2.a4);
1790  EXPECT_POISONED(s2.a8);
1791}
1792
1793TEST(MemorySanitizer, getrlimit) {
1794  struct rlimit limit;
1795  __msan_poison(&limit, sizeof(limit));
1796  int result = getrlimit(RLIMIT_DATA, &limit);
1797  assert(result == 0);
1798  EXPECT_NOT_POISONED(limit.rlim_cur);
1799  EXPECT_NOT_POISONED(limit.rlim_max);
1800}
1801
1802TEST(MemorySanitizer, getrusage) {
1803  struct rusage usage;
1804  __msan_poison(&usage, sizeof(usage));
1805  int result = getrusage(RUSAGE_SELF, &usage);
1806  assert(result == 0);
1807  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1808  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1809  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1810  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1811  EXPECT_NOT_POISONED(usage.ru_maxrss);
1812  EXPECT_NOT_POISONED(usage.ru_minflt);
1813  EXPECT_NOT_POISONED(usage.ru_majflt);
1814  EXPECT_NOT_POISONED(usage.ru_inblock);
1815  EXPECT_NOT_POISONED(usage.ru_oublock);
1816  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1817  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1818}
1819
1820#ifdef __GLIBC__
1821extern char *program_invocation_name;
1822#else  // __GLIBC__
1823# error "TODO: port this"
1824#endif
1825
1826static void dladdr_testfn() {}
1827
1828TEST(MemorySanitizer, dladdr) {
1829  Dl_info info;
1830  __msan_poison(&info, sizeof(info));
1831  int result = dladdr((const void*)dladdr_testfn, &info);
1832  assert(result != 0);
1833  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1834  if (info.dli_fname)
1835    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1836  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1837  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1838  if (info.dli_sname)
1839    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1840  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1841}
1842
1843static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1844  (*(int *)data)++;
1845  EXPECT_NOT_POISONED(info->dlpi_addr);
1846  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1847  EXPECT_NOT_POISONED(info->dlpi_phnum);
1848  for (int i = 0; i < info->dlpi_phnum; ++i)
1849    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1850  return 0;
1851}
1852
1853#ifndef MSAN_TEST_DISABLE_DLOPEN
1854
1855// Compute the path to our loadable DSO.  We assume it's in the same
1856// directory.  Only use string routines that we intercept so far to do this.
1857static int PathToLoadable(char *buf, size_t sz) {
1858  const char *basename = "libmsan_loadable.x86_64.so";
1859  char *argv0 = program_invocation_name;
1860  char *last_slash = strrchr(argv0, '/');
1861  assert(last_slash);
1862  int res =
1863      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1864  return res < sz ? 0 : res;
1865}
1866
1867TEST(MemorySanitizer, dl_iterate_phdr) {
1868  char path[4096];
1869  int res = PathToLoadable(path, sizeof(path));
1870  assert(!res);
1871
1872  // Having at least one dlopen'ed library in the process makes this more
1873  // entertaining.
1874  void *lib = dlopen(path, RTLD_LAZY);
1875  ASSERT_NE((void*)0, lib);
1876
1877  int count = 0;
1878  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1879  assert(count > 0);
1880
1881  dlclose(lib);
1882}
1883
1884
1885TEST(MemorySanitizer, dlopen) {
1886  char path[4096];
1887  int res = PathToLoadable(path, sizeof(path));
1888  assert(!res);
1889
1890  // We need to clear shadow for globals when doing dlopen.  In order to test
1891  // this, we have to poison the shadow for the DSO before we load it.  In
1892  // general this is difficult, but the loader tends to reload things in the
1893  // same place, so we open, close, and then reopen.  The global should always
1894  // start out clean after dlopen.
1895  for (int i = 0; i < 2; i++) {
1896    void *lib = dlopen(path, RTLD_LAZY);
1897    if (lib == NULL) {
1898      printf("dlerror: %s\n", dlerror());
1899      assert(lib != NULL);
1900    }
1901    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1902    assert(get_dso_global);
1903    void **dso_global = get_dso_global();
1904    EXPECT_NOT_POISONED(*dso_global);
1905    __msan_poison(dso_global, sizeof(*dso_global));
1906    EXPECT_POISONED(*dso_global);
1907    dlclose(lib);
1908  }
1909}
1910
1911// Regression test for a crash in dlopen() interceptor.
1912TEST(MemorySanitizer, dlopenFailed) {
1913  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1914  void *lib = dlopen(path, RTLD_LAZY);
1915  ASSERT_EQ(0, lib);
1916}
1917
1918#endif // MSAN_TEST_DISABLE_DLOPEN
1919
1920TEST(MemorySanitizer, scanf) {
1921  const char *input = "42 hello";
1922  int* d = new int;
1923  char* s = new char[7];
1924  int res = sscanf(input, "%d %5s", d, s);
1925  printf("res %d\n", res);
1926  assert(res == 2);
1927  EXPECT_NOT_POISONED(*d);
1928  EXPECT_NOT_POISONED(s[0]);
1929  EXPECT_NOT_POISONED(s[1]);
1930  EXPECT_NOT_POISONED(s[2]);
1931  EXPECT_NOT_POISONED(s[3]);
1932  EXPECT_NOT_POISONED(s[4]);
1933  EXPECT_NOT_POISONED(s[5]);
1934  EXPECT_POISONED(s[6]);
1935  delete s;
1936  delete d;
1937}
1938
1939static void *SimpleThread_threadfn(void* data) {
1940  return new int;
1941}
1942
1943TEST(MemorySanitizer, SimpleThread) {
1944  pthread_t t;
1945  void *p;
1946  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
1947  assert(!res);
1948  EXPECT_NOT_POISONED(t);
1949  res = pthread_join(t, &p);
1950  assert(!res);
1951  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
1952    __msan_unpoison(&p, sizeof(p));
1953  delete (int*)p;
1954}
1955
1956static void *SmallStackThread_threadfn(void* data) {
1957  return 0;
1958}
1959
1960TEST(MemorySanitizer, SmallStackThread) {
1961  pthread_attr_t attr;
1962  pthread_t t;
1963  void *p;
1964  int res;
1965  res = pthread_attr_init(&attr);
1966  ASSERT_EQ(0, res);
1967  res = pthread_attr_setstacksize(&attr, 64 * 1024);
1968  ASSERT_EQ(0, res);
1969  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1970  ASSERT_EQ(0, res);
1971  res = pthread_join(t, &p);
1972  ASSERT_EQ(0, res);
1973  res = pthread_attr_destroy(&attr);
1974  ASSERT_EQ(0, res);
1975}
1976
1977TEST(MemorySanitizer, PreAllocatedStackThread) {
1978  pthread_attr_t attr;
1979  pthread_t t;
1980  int res;
1981  res = pthread_attr_init(&attr);
1982  ASSERT_EQ(0, res);
1983  void *stack;
1984  const size_t kStackSize = 64 * 1024;
1985  res = posix_memalign(&stack, 4096, kStackSize);
1986  ASSERT_EQ(0, res);
1987  res = pthread_attr_setstack(&attr, stack, kStackSize);
1988  ASSERT_EQ(0, res);
1989  // A small self-allocated stack can not be extended by the tool.
1990  // In this case pthread_create is expected to fail.
1991  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1992  EXPECT_NE(0, res);
1993  res = pthread_attr_destroy(&attr);
1994  ASSERT_EQ(0, res);
1995}
1996
1997TEST(MemorySanitizer, pthread_getschedparam) {
1998  int policy;
1999  struct sched_param param;
2000  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2001  ASSERT_EQ(0, res);
2002  EXPECT_NOT_POISONED(policy);
2003  EXPECT_NOT_POISONED(param.sched_priority);
2004}
2005
2006TEST(MemorySanitizer, posix_memalign) {
2007  void *p;
2008  EXPECT_POISONED(p);
2009  int res = posix_memalign(&p, 4096, 13);
2010  ASSERT_EQ(0, res);
2011  EXPECT_NOT_POISONED(p);
2012  free(p);
2013}
2014
2015TEST(MemorySanitizer, inet_pton) {
2016  const char *s = "1:0:0:0:0:0:0:8";
2017  unsigned char buf[sizeof(struct in6_addr)];
2018  int res = inet_pton(AF_INET6, s, buf);
2019  ASSERT_EQ(1, res);
2020  EXPECT_NOT_POISONED(buf[0]);
2021  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2022
2023  char s_out[INET6_ADDRSTRLEN];
2024  EXPECT_POISONED(s_out[3]);
2025  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2026  ASSERT_NE((void*)0, q);
2027  EXPECT_NOT_POISONED(s_out[3]);
2028}
2029
2030TEST(MemorySanitizer, inet_aton) {
2031  const char *s = "127.0.0.1";
2032  struct in_addr in[2];
2033  int res = inet_aton(s, in);
2034  ASSERT_NE(0, res);
2035  EXPECT_NOT_POISONED(in[0]);
2036  EXPECT_POISONED(*(char *)(in + 1));
2037}
2038
2039TEST(MemorySanitizer, uname) {
2040  struct utsname u;
2041  int res = uname(&u);
2042  assert(!res);
2043  EXPECT_NOT_POISONED(strlen(u.sysname));
2044  EXPECT_NOT_POISONED(strlen(u.nodename));
2045  EXPECT_NOT_POISONED(strlen(u.release));
2046  EXPECT_NOT_POISONED(strlen(u.version));
2047  EXPECT_NOT_POISONED(strlen(u.machine));
2048}
2049
2050TEST(MemorySanitizer, gethostname) {
2051  char buf[100];
2052  int res = gethostname(buf, 100);
2053  assert(!res);
2054  EXPECT_NOT_POISONED(strlen(buf));
2055}
2056
2057TEST(MemorySanitizer, sysinfo) {
2058  struct sysinfo info;
2059  int res = sysinfo(&info);
2060  assert(!res);
2061  EXPECT_NOT_POISONED(info);
2062}
2063
2064TEST(MemorySanitizer, getpwuid) {
2065  struct passwd *p = getpwuid(0); // root
2066  assert(p);
2067  EXPECT_NOT_POISONED(p->pw_name);
2068  assert(p->pw_name);
2069  EXPECT_NOT_POISONED(p->pw_name[0]);
2070  EXPECT_NOT_POISONED(p->pw_uid);
2071  assert(p->pw_uid == 0);
2072}
2073
2074TEST(MemorySanitizer, getpwnam_r) {
2075  struct passwd pwd;
2076  struct passwd *pwdres;
2077  char buf[10000];
2078  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2079  assert(!res);
2080  EXPECT_NOT_POISONED(pwd.pw_name);
2081  assert(pwd.pw_name);
2082  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2083  EXPECT_NOT_POISONED(pwd.pw_uid);
2084  assert(pwd.pw_uid == 0);
2085}
2086
2087TEST(MemorySanitizer, getpwnam_r_positive) {
2088  struct passwd pwd;
2089  struct passwd *pwdres;
2090  char s[5];
2091  strncpy(s, "abcd", 5);
2092  __msan_poison(s, 5);
2093  char buf[10000];
2094  int res;
2095  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2096}
2097
2098TEST(MemorySanitizer, getgrnam_r) {
2099  struct group grp;
2100  struct group *grpres;
2101  char buf[10000];
2102  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2103  assert(!res);
2104  EXPECT_NOT_POISONED(grp.gr_name);
2105  assert(grp.gr_name);
2106  EXPECT_NOT_POISONED(grp.gr_name[0]);
2107  EXPECT_NOT_POISONED(grp.gr_gid);
2108}
2109
2110template<class T>
2111static bool applySlt(T value, T shadow) {
2112  __msan_partial_poison(&value, &shadow, sizeof(T));
2113  volatile bool zzz = true;
2114  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2115  // a shift-and-trunc to get at the highest bit.
2116  volatile bool v = value < 0 || zzz;
2117  return v;
2118}
2119
2120TEST(MemorySanitizer, SignedCompareWithZero) {
2121  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2122  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2123  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2124  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2125  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2126  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2127}
2128
2129template <class T, class S>
2130static T poisoned(T Va, S Sa) {
2131  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2132  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2133  T a;
2134  a = Va;
2135  __msan_partial_poison(&a, &Sa, sizeof(T));
2136  return a;
2137}
2138
2139TEST(MemorySanitizer, ICmpRelational) {
2140  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2141  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2142  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2143  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2144  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2145  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2146                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2147  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2148                  poisoned(-1, 0xFFFFFFFFU));
2149
2150  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2151  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2152  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2153  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2154  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2155  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2156                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2157  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2158                  poisoned(-1, 0xFFFFFFFFU));
2159
2160  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2161  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2162  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2163  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2164  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2165  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2166                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2167  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2168                  poisoned(-1, 0xFFFFFFFFU));
2169
2170  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2171  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2172  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2173  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2174  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2175  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2176                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2177  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2178                  poisoned(-1, 0xFFFFFFFFU));
2179
2180  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2181  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2182
2183  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2184}
2185
2186#if MSAN_HAS_M128
2187TEST(MemorySanitizer, ICmpVectorRelational) {
2188  EXPECT_NOT_POISONED(
2189      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2190                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2191  EXPECT_NOT_POISONED(
2192      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2193                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2194  EXPECT_POISONED(
2195      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2196                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2197  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2198                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2199}
2200#endif
2201
2202// Volatile bitfield store is implemented as load-mask-store
2203// Test that we don't warn on the store of (uninitialized) padding.
2204struct VolatileBitfieldStruct {
2205  volatile unsigned x : 1;
2206  unsigned y : 1;
2207};
2208
2209TEST(MemorySanitizer, VolatileBitfield) {
2210  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2211  S->x = 1;
2212  EXPECT_NOT_POISONED((unsigned)S->x);
2213  EXPECT_POISONED((unsigned)S->y);
2214}
2215
2216TEST(MemorySanitizer, UnalignedLoad) {
2217  char x[32];
2218  memset(x + 8, 0, 16);
2219  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2220  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2221  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2222  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2223  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2224  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2225  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2226
2227  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2228  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2229  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2230  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2231  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2232  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2233  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2234
2235  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2236  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2237  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2238  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2239  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2240  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2241  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2242  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2243  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2244}
2245
2246TEST(MemorySanitizer, UnalignedStore16) {
2247  char x[5];
2248  U2 y = 0;
2249  __msan_poison(&y, 1);
2250  __sanitizer_unaligned_store16(x + 1, y);
2251  EXPECT_POISONED(x[0]);
2252  EXPECT_POISONED(x[1]);
2253  EXPECT_NOT_POISONED(x[2]);
2254  EXPECT_POISONED(x[3]);
2255  EXPECT_POISONED(x[4]);
2256}
2257
2258TEST(MemorySanitizer, UnalignedStore32) {
2259  char x[8];
2260  U4 y4 = 0;
2261  __msan_poison(&y4, 2);
2262  __sanitizer_unaligned_store32(x+3, y4);
2263  EXPECT_POISONED(x[0]);
2264  EXPECT_POISONED(x[1]);
2265  EXPECT_POISONED(x[2]);
2266  EXPECT_POISONED(x[3]);
2267  EXPECT_POISONED(x[4]);
2268  EXPECT_NOT_POISONED(x[5]);
2269  EXPECT_NOT_POISONED(x[6]);
2270  EXPECT_POISONED(x[7]);
2271}
2272
2273TEST(MemorySanitizer, UnalignedStore64) {
2274  char x[16];
2275  U8 y = 0;
2276  __msan_poison(&y, 3);
2277  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2278  __sanitizer_unaligned_store64(x+3, y);
2279  EXPECT_POISONED(x[0]);
2280  EXPECT_POISONED(x[1]);
2281  EXPECT_POISONED(x[2]);
2282  EXPECT_POISONED(x[3]);
2283  EXPECT_POISONED(x[4]);
2284  EXPECT_POISONED(x[5]);
2285  EXPECT_NOT_POISONED(x[6]);
2286  EXPECT_NOT_POISONED(x[7]);
2287  EXPECT_NOT_POISONED(x[8]);
2288  EXPECT_POISONED(x[9]);
2289  EXPECT_NOT_POISONED(x[10]);
2290  EXPECT_POISONED(x[11]);
2291}
2292
2293TEST(MemorySanitizerDr, StoreInDSOTest) {
2294  if (!__msan_has_dynamic_component()) return;
2295  char* s = new char[10];
2296  dso_memfill(s, 9);
2297  EXPECT_NOT_POISONED(s[5]);
2298  EXPECT_POISONED(s[9]);
2299}
2300
2301int return_poisoned_int() {
2302  return ReturnPoisoned<U8>();
2303}
2304
2305TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2306  if (!__msan_has_dynamic_component()) return;
2307  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2308}
2309
2310NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2311  EXPECT_POISONED(x);
2312  EXPECT_POISONED(y);
2313  EXPECT_POISONED(z);
2314  return 0;
2315}
2316
2317static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2318  EXPECT_NOT_POISONED(x);
2319  EXPECT_NOT_POISONED(y);
2320  EXPECT_NOT_POISONED(z);
2321  return 0;
2322}
2323
2324TEST(MemorySanitizerDr, CallFromDSOTest) {
2325  if (!__msan_has_dynamic_component()) return;
2326  S8* x = GetPoisoned<S8>();
2327  S8* y = GetPoisoned<S8>();
2328  S8* z = GetPoisoned<S8>();
2329  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2330  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2331}
2332
2333static void StackStoreInDSOFn(int* x, int* y) {
2334  EXPECT_NOT_POISONED(*x);
2335  EXPECT_NOT_POISONED(*y);
2336}
2337
2338TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2339  if (!__msan_has_dynamic_component()) return;
2340  dso_stack_store(StackStoreInDSOFn, 1);
2341}
2342
2343TEST(MemorySanitizerOrigins, SetGet) {
2344  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2345  if (!TrackingOrigins()) return;
2346  int x;
2347  __msan_set_origin(&x, sizeof(x), 1234);
2348  EXPECT_EQ(1234, __msan_get_origin(&x));
2349  __msan_set_origin(&x, sizeof(x), 5678);
2350  EXPECT_EQ(5678, __msan_get_origin(&x));
2351  __msan_set_origin(&x, sizeof(x), 0);
2352  EXPECT_EQ(0, __msan_get_origin(&x));
2353}
2354
2355namespace {
2356struct S {
2357  U4 dummy;
2358  U2 a;
2359  U2 b;
2360};
2361
2362// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2363TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2364  if (!TrackingOrigins()) return;
2365
2366  S s;
2367  U4 origin = rand();  // NOLINT
2368  s.a = *GetPoisonedO<U2>(0, origin);
2369  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2370  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2371
2372  s.b = 42;
2373  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2374  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2375}
2376}  // namespace
2377
2378template<class T, class BinaryOp>
2379INLINE
2380void BinaryOpOriginTest(BinaryOp op) {
2381  U4 ox = rand();  //NOLINT
2382  U4 oy = rand();  //NOLINT
2383  T *x = GetPoisonedO<T>(0, ox, 0);
2384  T *y = GetPoisonedO<T>(1, oy, 0);
2385  T *z = GetPoisonedO<T>(2, 0, 0);
2386
2387  *z = op(*x, *y);
2388  U4 origin = __msan_get_origin(z);
2389  EXPECT_POISONED_O(*z, origin);
2390  EXPECT_EQ(true, origin == ox || origin == oy);
2391
2392  // y is poisoned, x is not.
2393  *x = 10101;
2394  *y = *GetPoisonedO<T>(1, oy);
2395  break_optimization(x);
2396  __msan_set_origin(z, sizeof(*z), 0);
2397  *z = op(*x, *y);
2398  EXPECT_POISONED_O(*z, oy);
2399  EXPECT_EQ(__msan_get_origin(z), oy);
2400
2401  // x is poisoned, y is not.
2402  *x = *GetPoisonedO<T>(0, ox);
2403  *y = 10101010;
2404  break_optimization(y);
2405  __msan_set_origin(z, sizeof(*z), 0);
2406  *z = op(*x, *y);
2407  EXPECT_POISONED_O(*z, ox);
2408  EXPECT_EQ(__msan_get_origin(z), ox);
2409}
2410
2411template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2412template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2413template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2414template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2415template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2416template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2417
2418TEST(MemorySanitizerOrigins, BinaryOp) {
2419  if (!TrackingOrigins()) return;
2420  BinaryOpOriginTest<S8>(XOR<S8>);
2421  BinaryOpOriginTest<U8>(ADD<U8>);
2422  BinaryOpOriginTest<S4>(SUB<S4>);
2423  BinaryOpOriginTest<S4>(MUL<S4>);
2424  BinaryOpOriginTest<U4>(OR<U4>);
2425  BinaryOpOriginTest<U4>(AND<U4>);
2426  BinaryOpOriginTest<double>(ADD<U4>);
2427  BinaryOpOriginTest<float>(ADD<S4>);
2428  BinaryOpOriginTest<double>(ADD<double>);
2429  BinaryOpOriginTest<float>(ADD<double>);
2430}
2431
2432TEST(MemorySanitizerOrigins, Unary) {
2433  if (!TrackingOrigins()) return;
2434  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2435  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2436  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2437  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2438
2439  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2440  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2441  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2442  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2443
2444  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2445  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2446  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2447  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2448
2449  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2450  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2451  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2452  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2453
2454  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2455  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2456}
2457
2458TEST(MemorySanitizerOrigins, EQ) {
2459  if (!TrackingOrigins()) return;
2460  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2461  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2462  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2463}
2464
2465TEST(MemorySanitizerOrigins, DIV) {
2466  if (!TrackingOrigins()) return;
2467  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2468  unsigned o = __LINE__;
2469  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2470}
2471
2472TEST(MemorySanitizerOrigins, SHIFT) {
2473  if (!TrackingOrigins()) return;
2474  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2475  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2476  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2477  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2478  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2479  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2480}
2481
2482template<class T, int N>
2483void MemCpyTest() {
2484  int ox = __LINE__;
2485  T *x = new T[N];
2486  T *y = new T[N];
2487  T *z = new T[N];
2488  T *q = new T[N];
2489  __msan_poison(x, N * sizeof(T));
2490  __msan_set_origin(x, N * sizeof(T), ox);
2491  __msan_set_origin(y, N * sizeof(T), 777777);
2492  __msan_set_origin(z, N * sizeof(T), 888888);
2493  EXPECT_NOT_POISONED(x);
2494  memcpy(y, x, N * sizeof(T));
2495  EXPECT_POISONED_O(y[0], ox);
2496  EXPECT_POISONED_O(y[N/2], ox);
2497  EXPECT_POISONED_O(y[N-1], ox);
2498  EXPECT_NOT_POISONED(x);
2499  void *res = mempcpy(q, x, N * sizeof(T));
2500  ASSERT_EQ(q + N, res);
2501  EXPECT_POISONED_O(q[0], ox);
2502  EXPECT_POISONED_O(q[N/2], ox);
2503  EXPECT_POISONED_O(q[N-1], ox);
2504  EXPECT_NOT_POISONED(x);
2505  memmove(z, x, N * sizeof(T));
2506  EXPECT_POISONED_O(z[0], ox);
2507  EXPECT_POISONED_O(z[N/2], ox);
2508  EXPECT_POISONED_O(z[N-1], ox);
2509}
2510
2511TEST(MemorySanitizerOrigins, LargeMemCpy) {
2512  if (!TrackingOrigins()) return;
2513  MemCpyTest<U1, 10000>();
2514  MemCpyTest<U8, 10000>();
2515}
2516
2517TEST(MemorySanitizerOrigins, SmallMemCpy) {
2518  if (!TrackingOrigins()) return;
2519  MemCpyTest<U8, 1>();
2520  MemCpyTest<U8, 2>();
2521  MemCpyTest<U8, 3>();
2522}
2523
2524TEST(MemorySanitizerOrigins, Select) {
2525  if (!TrackingOrigins()) return;
2526  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2527  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2528  S4 x;
2529  break_optimization(&x);
2530  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2531
2532  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2533  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2534}
2535
2536extern "C"
2537NOINLINE char AllocaTO() {
2538  int ar[100];
2539  break_optimization(ar);
2540  return ar[10];
2541  // fprintf(stderr, "Descr: %s\n",
2542  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2543}
2544
2545TEST(MemorySanitizerOrigins, Alloca) {
2546  if (!TrackingOrigins()) return;
2547  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2548  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2549  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2550  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2551}
2552
2553// FIXME: replace with a lit-like test.
2554TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2555  if (!TrackingOrigins()) return;
2556  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2557}
2558
2559NOINLINE int RetvalOriginTest(U4 origin) {
2560  int *a = new int;
2561  break_optimization(a);
2562  __msan_set_origin(a, sizeof(*a), origin);
2563  int res = *a;
2564  delete a;
2565  return res;
2566}
2567
2568TEST(MemorySanitizerOrigins, Retval) {
2569  if (!TrackingOrigins()) return;
2570  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2571}
2572
2573NOINLINE void ParamOriginTest(int param, U4 origin) {
2574  EXPECT_POISONED_O(param, origin);
2575}
2576
2577TEST(MemorySanitizerOrigins, Param) {
2578  if (!TrackingOrigins()) return;
2579  int *a = new int;
2580  U4 origin = __LINE__;
2581  break_optimization(a);
2582  __msan_set_origin(a, sizeof(*a), origin);
2583  ParamOriginTest(*a, origin);
2584  delete a;
2585}
2586
2587TEST(MemorySanitizerOrigins, Invoke) {
2588  if (!TrackingOrigins()) return;
2589  StructWithDtor s;  // Will cause the calls to become invokes.
2590  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2591}
2592
2593TEST(MemorySanitizerOrigins, strlen) {
2594  S8 alignment;
2595  break_optimization(&alignment);
2596  char x[4] = {'a', 'b', 0, 0};
2597  __msan_poison(&x[2], 1);
2598  U4 origin = __LINE__;
2599  __msan_set_origin(x, sizeof(x), origin);
2600  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2601}
2602
2603TEST(MemorySanitizerOrigins, wcslen) {
2604  wchar_t w[3] = {'a', 'b', 0};
2605  U4 origin = __LINE__;
2606  __msan_set_origin(w, sizeof(w), origin);
2607  __msan_poison(&w[2], sizeof(wchar_t));
2608  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2609}
2610
2611#if MSAN_HAS_M128
2612TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2613  __m128 x, y;
2614  U4 origin = __LINE__;
2615  __msan_set_origin(&x, sizeof(x), origin);
2616  __msan_poison(&x, sizeof(x));
2617  __builtin_ia32_storeups((float*)&y, x);
2618  EXPECT_POISONED_O(y, origin);
2619}
2620#endif
2621
2622NOINLINE void RecursiveMalloc(int depth) {
2623  static int count;
2624  count++;
2625  if ((count % (1024 * 1024)) == 0)
2626    printf("RecursiveMalloc: %d\n", count);
2627  int *x1 = new int;
2628  int *x2 = new int;
2629  break_optimization(x1);
2630  break_optimization(x2);
2631  if (depth > 0) {
2632    RecursiveMalloc(depth-1);
2633    RecursiveMalloc(depth-1);
2634  }
2635  delete x1;
2636  delete x2;
2637}
2638
2639TEST(MemorySanitizer, CallocOverflow) {
2640  size_t kArraySize = 4096;
2641  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2642  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2643  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2644  EXPECT_EQ(0L, Ident(p));
2645}
2646
2647TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2648  RecursiveMalloc(22);
2649}
2650