1 //===-- msan_test.cpp -----------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file is a part of MemorySanitizer.
10 //
11 // MemorySanitizer unit tests.
12 //===----------------------------------------------------------------------===//
13
14 #ifndef MSAN_EXTERNAL_TEST_CONFIG
15 #include "msan_test_config.h"
16 #endif // MSAN_EXTERNAL_TEST_CONFIG
17
18 #include "sanitizer_common/tests/sanitizer_test_utils.h"
19
20 #include "sanitizer/allocator_interface.h"
21 #include "sanitizer/msan_interface.h"
22
23 #if defined(__FreeBSD__)
24 # define _KERNEL // To declare 'shminfo' structure.
25 # include <sys/shm.h>
26 # undef _KERNEL
27 extern "C" {
28 // <sys/shm.h> doesn't declare these functions in _KERNEL mode.
29 void *shmat(int, const void *, int);
30 int shmget(key_t, size_t, int);
31 int shmctl(int, int, struct shmid_ds *);
32 int shmdt(const void *);
33 }
34 #endif
35
36 #include <inttypes.h>
37 #include <stdlib.h>
38 #include <stdarg.h>
39 #include <stdio.h>
40 #include <wchar.h>
41 #include <math.h>
42
43 #include <arpa/inet.h>
44 #include <dlfcn.h>
45 #include <grp.h>
46 #include <unistd.h>
47 #include <link.h>
48 #include <limits.h>
49 #include <sys/time.h>
50 #include <poll.h>
51 #include <sys/types.h>
52 #include <sys/stat.h>
53 #include <fcntl.h>
54 #include <sys/resource.h>
55 #include <sys/ioctl.h>
56 #include <sys/statvfs.h>
57 #include <sys/utsname.h>
58 #include <sys/mman.h>
59 #include <dirent.h>
60 #include <pwd.h>
61 #include <sys/socket.h>
62 #include <netdb.h>
63 #include <wordexp.h>
64 #include <sys/ipc.h>
65 #include <sys/shm.h>
66
67 #if defined(__NetBSD__)
68 # include <signal.h>
69 # include <netinet/in.h>
70 # include <sys/uio.h>
71 # include <sys/mount.h>
72 # include <sys/sysctl.h>
73 # include <net/if.h>
74 # include <net/if_ether.h>
75 #elif defined(__FreeBSD__)
76 # include <signal.h>
77 # include <netinet/in.h>
78 # include <pthread_np.h>
79 # include <sys/uio.h>
80 # include <sys/mount.h>
81 # include <sys/sysctl.h>
82 # include <net/ethernet.h>
83 # define f_namelen f_namemax // FreeBSD names this statfs field so.
84 # define cpu_set_t cpuset_t
85 extern "C" {
86 // FreeBSD's <ssp/string.h> defines mempcpy() to be a macro expanding into
87 // a __builtin___mempcpy_chk() call, but since Msan RTL defines it as an
88 // ordinary function, we can declare it here to complete the tests.
89 void *mempcpy(void *dest, const void *src, size_t n);
90 }
91 #else
92 # include <malloc.h>
93 # include <sys/sysinfo.h>
94 # include <sys/vfs.h>
95 # include <mntent.h>
96 # include <netinet/ether.h>
97 # if defined(__linux__)
98 # include <sys/uio.h>
99 # endif
100 #endif
101
102 #if defined(__i386__) || defined(__x86_64__)
103 # include <emmintrin.h>
104 # define MSAN_HAS_M128 1
105 #else
106 # define MSAN_HAS_M128 0
107 #endif
108
109 #ifdef __AVX2__
110 # include <immintrin.h>
111 #endif
112
113 #if defined(__FreeBSD__) || defined(__NetBSD__)
114 # define FILE_TO_READ "/bin/cat"
115 # define DIR_TO_READ "/bin"
116 # define SUBFILE_TO_READ "cat"
117 # define SYMLINK_TO_READ "/usr/bin/tar"
118 # define SUPERUSER_GROUP "wheel"
119 #else
120 # define FILE_TO_READ "/proc/self/stat"
121 # define DIR_TO_READ "/proc/self"
122 # define SUBFILE_TO_READ "stat"
123 # define SYMLINK_TO_READ "/proc/self/exe"
124 # define SUPERUSER_GROUP "root"
125 #endif
126
GetPageSize()127 static uintptr_t GetPageSize() {
128 return sysconf(_SC_PAGESIZE);
129 }
130
131 const size_t kMaxPathLength = 4096;
132
133 typedef unsigned char U1;
134 typedef unsigned short U2;
135 typedef unsigned int U4;
136 typedef unsigned long long U8;
137 typedef signed char S1;
138 typedef signed short S2;
139 typedef signed int S4;
140 typedef signed long long S8;
141 #define NOINLINE __attribute__((noinline))
142 #define ALWAYS_INLINE __attribute__((always_inline))
143
TrackingOrigins()144 static bool TrackingOrigins() {
145 S8 x;
146 __msan_set_origin(&x, sizeof(x), 0x1234);
147 U4 origin = __msan_get_origin(&x);
148 __msan_set_origin(&x, sizeof(x), 0);
149 return __msan_origin_is_descendant_or_same(origin, 0x1234);
150 }
151
152 #define EXPECT_ORIGIN(expected, origin) \
153 EXPECT_TRUE(__msan_origin_is_descendant_or_same((origin), (expected)))
154
155 #define EXPECT_UMR(action) \
156 do { \
157 __msan_set_expect_umr(1); \
158 action; \
159 __msan_set_expect_umr(0); \
160 } while (0)
161
162 #define EXPECT_UMR_O(action, origin) \
163 do { \
164 __msan_set_expect_umr(1); \
165 action; \
166 __msan_set_expect_umr(0); \
167 if (TrackingOrigins()) EXPECT_ORIGIN(origin, __msan_get_umr_origin()); \
168 } while (0)
169
170 #define EXPECT_POISONED(x) ExpectPoisoned(x)
171
172 template <typename T>
ExpectPoisoned(const T & t)173 void ExpectPoisoned(const T& t) {
174 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
175 }
176
177 #define EXPECT_POISONED_O(x, origin) \
178 ExpectPoisonedWithOrigin(x, origin)
179
180 template<typename T>
ExpectPoisonedWithOrigin(const T & t,unsigned origin)181 void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
182 EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
183 if (TrackingOrigins()) EXPECT_ORIGIN(origin, __msan_get_origin((void *)&t));
184 }
185
186 #define EXPECT_NOT_POISONED(x) EXPECT_EQ(true, TestForNotPoisoned((x)))
187 #define EXPECT_NOT_POISONED2(data, size) \
188 EXPECT_EQ(true, TestForNotPoisoned((data), (size)))
189
TestForNotPoisoned(const void * data,size_t size)190 bool TestForNotPoisoned(const void *data, size_t size) {
191 return __msan_test_shadow(data, size) == -1;
192 }
193
194 template<typename T>
TestForNotPoisoned(const T & t)195 bool TestForNotPoisoned(const T& t) {
196 return TestForNotPoisoned((void *)&t, sizeof(t));
197 }
198
199 static U8 poisoned_array[100];
200 template<class T>
GetPoisoned(int i=0,T val=0)201 T *GetPoisoned(int i = 0, T val = 0) {
202 T *res = (T*)&poisoned_array[i];
203 *res = val;
204 __msan_poison(&poisoned_array[i], sizeof(T));
205 return res;
206 }
207
208 template<class T>
GetPoisonedO(int i,U4 origin,T val=0)209 T *GetPoisonedO(int i, U4 origin, T val = 0) {
210 T *res = (T*)&poisoned_array[i];
211 *res = val;
212 __msan_poison(&poisoned_array[i], sizeof(T));
213 __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
214 return res;
215 }
216
217 template<typename T>
Poisoned(T v=0,T s=(T)(-1))218 T Poisoned(T v = 0, T s = (T)(-1)) {
219 __msan_partial_poison(&v, &s, sizeof(T));
220 return v;
221 }
222
ReturnPoisoned()223 template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
224
225 static volatile int g_one = 1;
226 static volatile int g_zero = 0;
227 static volatile int g_0 = 0;
228 static volatile int g_1 = 1;
229
230 S4 a_s4[100];
231 S8 a_s8[100];
232
233 // Check that malloc poisons memory.
234 // A lot of tests below depend on this.
TEST(MemorySanitizerSanity,PoisonInMalloc)235 TEST(MemorySanitizerSanity, PoisonInMalloc) {
236 int *x = (int*)malloc(sizeof(int));
237 EXPECT_POISONED(*x);
238 free(x);
239 }
240
TEST(MemorySanitizer,NegativeTest1)241 TEST(MemorySanitizer, NegativeTest1) {
242 S4 *x = GetPoisoned<S4>();
243 if (g_one)
244 *x = 0;
245 EXPECT_NOT_POISONED(*x);
246 }
247
TEST(MemorySanitizer,PositiveTest1)248 TEST(MemorySanitizer, PositiveTest1) {
249 // Load to store.
250 EXPECT_POISONED(*GetPoisoned<S1>());
251 EXPECT_POISONED(*GetPoisoned<S2>());
252 EXPECT_POISONED(*GetPoisoned<S4>());
253 EXPECT_POISONED(*GetPoisoned<S8>());
254
255 // S->S conversions.
256 EXPECT_POISONED(*GetPoisoned<S1>());
257 EXPECT_POISONED(*GetPoisoned<S1>());
258 EXPECT_POISONED(*GetPoisoned<S1>());
259
260 EXPECT_POISONED(*GetPoisoned<S2>());
261 EXPECT_POISONED(*GetPoisoned<S2>());
262 EXPECT_POISONED(*GetPoisoned<S2>());
263
264 EXPECT_POISONED(*GetPoisoned<S4>());
265 EXPECT_POISONED(*GetPoisoned<S4>());
266 EXPECT_POISONED(*GetPoisoned<S4>());
267
268 EXPECT_POISONED(*GetPoisoned<S8>());
269 EXPECT_POISONED(*GetPoisoned<S8>());
270 EXPECT_POISONED(*GetPoisoned<S8>());
271
272 // ZExt
273 EXPECT_POISONED(*GetPoisoned<U1>());
274 EXPECT_POISONED(*GetPoisoned<U1>());
275 EXPECT_POISONED(*GetPoisoned<U1>());
276 EXPECT_POISONED(*GetPoisoned<U2>());
277 EXPECT_POISONED(*GetPoisoned<U2>());
278 EXPECT_POISONED(*GetPoisoned<U4>());
279
280 // Unary ops.
281 EXPECT_POISONED(- *GetPoisoned<S4>());
282
283 EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
284
285
286 a_s4[g_zero] = 1 - *GetPoisoned<S4>();
287 a_s4[g_zero] = 1 + *GetPoisoned<S4>();
288 }
289
TEST(MemorySanitizer,Phi1)290 TEST(MemorySanitizer, Phi1) {
291 S4 c;
292 if (g_one) {
293 c = *GetPoisoned<S4>();
294 } else {
295 break_optimization(0);
296 c = 0;
297 }
298 EXPECT_POISONED(c);
299 }
300
TEST(MemorySanitizer,Phi2)301 TEST(MemorySanitizer, Phi2) {
302 S4 i = *GetPoisoned<S4>();
303 S4 n = g_one;
304 EXPECT_UMR(for (; i < g_one; i++););
305 EXPECT_POISONED(i);
306 }
307
Arg1ExpectUMR(S4 a1)308 NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
Arg2ExpectUMR(S4 a1,S4 a2)309 NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
Arg3ExpectUMR(S1 a1,S4 a2,S8 a3)310 NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
311
TEST(MemorySanitizer,ArgTest)312 TEST(MemorySanitizer, ArgTest) {
313 Arg1ExpectUMR(*GetPoisoned<S4>());
314 Arg2ExpectUMR(0, *GetPoisoned<S4>());
315 Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
316 }
317
318
TEST(MemorySanitizer,CallAndRet)319 TEST(MemorySanitizer, CallAndRet) {
320 ReturnPoisoned<S1>();
321 ReturnPoisoned<S2>();
322 ReturnPoisoned<S4>();
323 ReturnPoisoned<S8>();
324
325 EXPECT_POISONED(ReturnPoisoned<S1>());
326 EXPECT_POISONED(ReturnPoisoned<S2>());
327 EXPECT_POISONED(ReturnPoisoned<S4>());
328 EXPECT_POISONED(ReturnPoisoned<S8>());
329 }
330
331 // malloc() in the following test may be optimized to produce a compile-time
332 // undef value. Check that we trap on the volatile assignment anyway.
TEST(MemorySanitizer,DISABLED_MallocNoIdent)333 TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
334 S4 *x = (int*)malloc(sizeof(S4));
335 EXPECT_POISONED(*x);
336 free(x);
337 }
338
TEST(MemorySanitizer,Malloc)339 TEST(MemorySanitizer, Malloc) {
340 S4 *x = (int*)Ident(malloc(sizeof(S4)));
341 EXPECT_POISONED(*x);
342 free(x);
343 }
344
TEST(MemorySanitizer,Realloc)345 TEST(MemorySanitizer, Realloc) {
346 S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
347 EXPECT_POISONED(x[0]);
348 x[0] = 1;
349 x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
350 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before.
351 EXPECT_POISONED(x[1]);
352 x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
353 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before.
354 EXPECT_POISONED(x[2]);
355 EXPECT_POISONED(x[1]);
356 x[2] = 1; // Init this here. Check that after realloc it is poisoned again.
357 x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
358 EXPECT_NOT_POISONED(x[0]); // Ok, was inited before.
359 EXPECT_POISONED(x[1]);
360 x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
361 EXPECT_POISONED(x[1]);
362 EXPECT_POISONED(x[2]);
363 free(x);
364 }
365
TEST(MemorySanitizer,Calloc)366 TEST(MemorySanitizer, Calloc) {
367 S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
368 EXPECT_NOT_POISONED(*x); // Should not be poisoned.
369 EXPECT_EQ(0, *x);
370 free(x);
371 }
372
TEST(MemorySanitizer,CallocReturnsZeroMem)373 TEST(MemorySanitizer, CallocReturnsZeroMem) {
374 size_t sizes[] = {16, 1000, 10000, 100000, 2100000};
375 for (size_t s = 0; s < sizeof(sizes)/sizeof(sizes[0]); s++) {
376 size_t size = sizes[s];
377 for (size_t iter = 0; iter < 5; iter++) {
378 char *x = Ident((char*)calloc(1, size));
379 EXPECT_EQ(x[0], 0);
380 EXPECT_EQ(x[size - 1], 0);
381 EXPECT_EQ(x[size / 2], 0);
382 EXPECT_EQ(x[size / 3], 0);
383 EXPECT_EQ(x[size / 4], 0);
384 memset(x, 0x42, size);
385 free(Ident(x));
386 }
387 }
388 }
389
TEST(MemorySanitizer,AndOr)390 TEST(MemorySanitizer, AndOr) {
391 U4 *p = GetPoisoned<U4>();
392 // We poison two bytes in the midle of a 4-byte word to make the test
393 // correct regardless of endianness.
394 ((U1*)p)[1] = 0;
395 ((U1*)p)[2] = 0xff;
396 EXPECT_NOT_POISONED(*p & 0x00ffff00);
397 EXPECT_NOT_POISONED(*p & 0x00ff0000);
398 EXPECT_NOT_POISONED(*p & 0x0000ff00);
399 EXPECT_POISONED(*p & 0xff000000);
400 EXPECT_POISONED(*p & 0x000000ff);
401 EXPECT_POISONED(*p & 0x0000ffff);
402 EXPECT_POISONED(*p & 0xffff0000);
403
404 EXPECT_NOT_POISONED(*p | 0xff0000ff);
405 EXPECT_NOT_POISONED(*p | 0xff00ffff);
406 EXPECT_NOT_POISONED(*p | 0xffff00ff);
407 EXPECT_POISONED(*p | 0xff000000);
408 EXPECT_POISONED(*p | 0x000000ff);
409 EXPECT_POISONED(*p | 0x0000ffff);
410 EXPECT_POISONED(*p | 0xffff0000);
411
412 EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
413 }
414
415 template<class T>
applyNot(T value,T shadow)416 static bool applyNot(T value, T shadow) {
417 __msan_partial_poison(&value, &shadow, sizeof(T));
418 return !value;
419 }
420
TEST(MemorySanitizer,Not)421 TEST(MemorySanitizer, Not) {
422 EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
423 EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
424 EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
425 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
426 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
427 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
428 EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
429 EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
430 EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
431 EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
432
433 EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
434 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
435 EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
436 EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
437
438 EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
439 EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
440 }
441
TEST(MemorySanitizer,Shift)442 TEST(MemorySanitizer, Shift) {
443 U4 *up = GetPoisoned<U4>();
444 ((U1*)up)[0] = 0;
445 ((U1*)up)[3] = 0xff;
446 EXPECT_NOT_POISONED(*up >> 30);
447 EXPECT_NOT_POISONED(*up >> 24);
448 EXPECT_POISONED(*up >> 23);
449 EXPECT_POISONED(*up >> 10);
450
451 EXPECT_NOT_POISONED(*up << 30);
452 EXPECT_NOT_POISONED(*up << 24);
453 EXPECT_POISONED(*up << 23);
454 EXPECT_POISONED(*up << 10);
455
456 S4 *sp = (S4*)up;
457 EXPECT_NOT_POISONED(*sp >> 30);
458 EXPECT_NOT_POISONED(*sp >> 24);
459 EXPECT_POISONED(*sp >> 23);
460 EXPECT_POISONED(*sp >> 10);
461
462 sp = GetPoisoned<S4>();
463 ((S1*)sp)[1] = 0;
464 ((S1*)sp)[2] = 0;
465 EXPECT_POISONED(*sp >> 31);
466
467 EXPECT_POISONED(100 >> *GetPoisoned<S4>());
468 EXPECT_POISONED(100U >> *GetPoisoned<S4>());
469 }
470
GetPoisonedZero()471 NOINLINE static int GetPoisonedZero() {
472 int *zero = new int;
473 *zero = 0;
474 __msan_poison(zero, sizeof(*zero));
475 int res = *zero;
476 delete zero;
477 return res;
478 }
479
TEST(MemorySanitizer,LoadFromDirtyAddress)480 TEST(MemorySanitizer, LoadFromDirtyAddress) {
481 int *a = new int;
482 *a = 0;
483 EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
484 delete a;
485 }
486
TEST(MemorySanitizer,StoreToDirtyAddress)487 TEST(MemorySanitizer, StoreToDirtyAddress) {
488 int *a = new int;
489 EXPECT_UMR(a[GetPoisonedZero()] = 0);
490 break_optimization(a);
491 delete a;
492 }
493
494
StackTestFunc()495 NOINLINE void StackTestFunc() {
496 S4 p4;
497 S4 ok4 = 1;
498 S2 p2;
499 S2 ok2 = 1;
500 S1 p1;
501 S1 ok1 = 1;
502 break_optimization(&p4);
503 break_optimization(&ok4);
504 break_optimization(&p2);
505 break_optimization(&ok2);
506 break_optimization(&p1);
507 break_optimization(&ok1);
508
509 EXPECT_POISONED(p4);
510 EXPECT_POISONED(p2);
511 EXPECT_POISONED(p1);
512 EXPECT_NOT_POISONED(ok1);
513 EXPECT_NOT_POISONED(ok2);
514 EXPECT_NOT_POISONED(ok4);
515 }
516
TEST(MemorySanitizer,StackTest)517 TEST(MemorySanitizer, StackTest) {
518 StackTestFunc();
519 }
520
StackStressFunc()521 NOINLINE void StackStressFunc() {
522 int foo[10000];
523 break_optimization(foo);
524 }
525
TEST(MemorySanitizer,DISABLED_StackStressTest)526 TEST(MemorySanitizer, DISABLED_StackStressTest) {
527 for (int i = 0; i < 1000000; i++)
528 StackStressFunc();
529 }
530
531 template<class T>
TestFloatingPoint()532 void TestFloatingPoint() {
533 static volatile T v;
534 static T g[100];
535 break_optimization(&g);
536 T *x = GetPoisoned<T>();
537 T *y = GetPoisoned<T>(1);
538 EXPECT_POISONED(*x);
539 EXPECT_POISONED((long long)*x);
540 EXPECT_POISONED((int)*x);
541 g[0] = *x;
542 g[1] = *x + *y;
543 g[2] = *x - *y;
544 g[3] = *x * *y;
545 }
546
TEST(MemorySanitizer,FloatingPointTest)547 TEST(MemorySanitizer, FloatingPointTest) {
548 TestFloatingPoint<float>();
549 TestFloatingPoint<double>();
550 }
551
TEST(MemorySanitizer,DynMem)552 TEST(MemorySanitizer, DynMem) {
553 S4 x = 0;
554 S4 *y = GetPoisoned<S4>();
555 memcpy(y, &x, g_one * sizeof(S4));
556 EXPECT_NOT_POISONED(*y);
557 }
558
559 static char *DynRetTestStr;
560
TEST(MemorySanitizer,DynRet)561 TEST(MemorySanitizer, DynRet) {
562 ReturnPoisoned<S8>();
563 EXPECT_NOT_POISONED(atoi("0"));
564 }
565
TEST(MemorySanitizer,DynRet1)566 TEST(MemorySanitizer, DynRet1) {
567 ReturnPoisoned<S8>();
568 }
569
570 struct LargeStruct {
571 S4 x[10];
572 };
573
574 NOINLINE
LargeRetTest()575 LargeStruct LargeRetTest() {
576 LargeStruct res;
577 res.x[0] = *GetPoisoned<S4>();
578 res.x[1] = *GetPoisoned<S4>();
579 res.x[2] = *GetPoisoned<S4>();
580 res.x[3] = *GetPoisoned<S4>();
581 res.x[4] = *GetPoisoned<S4>();
582 res.x[5] = *GetPoisoned<S4>();
583 res.x[6] = *GetPoisoned<S4>();
584 res.x[7] = *GetPoisoned<S4>();
585 res.x[8] = *GetPoisoned<S4>();
586 res.x[9] = *GetPoisoned<S4>();
587 return res;
588 }
589
TEST(MemorySanitizer,LargeRet)590 TEST(MemorySanitizer, LargeRet) {
591 LargeStruct a = LargeRetTest();
592 EXPECT_POISONED(a.x[0]);
593 EXPECT_POISONED(a.x[9]);
594 }
595
TEST(MemorySanitizer,strerror)596 TEST(MemorySanitizer, strerror) {
597 char *buf = strerror(EINVAL);
598 EXPECT_NOT_POISONED(strlen(buf));
599 buf = strerror(123456);
600 EXPECT_NOT_POISONED(strlen(buf));
601 }
602
TEST(MemorySanitizer,strerror_r)603 TEST(MemorySanitizer, strerror_r) {
604 errno = 0;
605 char buf[1000];
606 char *res = (char*) (size_t) strerror_r(EINVAL, buf, sizeof(buf));
607 ASSERT_EQ(0, errno);
608 if (!res) res = buf; // POSIX version success.
609 EXPECT_NOT_POISONED(strlen(res));
610 }
611
TEST(MemorySanitizer,fread)612 TEST(MemorySanitizer, fread) {
613 char *x = new char[32];
614 FILE *f = fopen(FILE_TO_READ, "r");
615 ASSERT_TRUE(f != NULL);
616 fread(x, 1, 32, f);
617 EXPECT_NOT_POISONED(x[0]);
618 EXPECT_NOT_POISONED(x[16]);
619 EXPECT_NOT_POISONED(x[31]);
620 fclose(f);
621 delete[] x;
622 }
623
TEST(MemorySanitizer,read)624 TEST(MemorySanitizer, read) {
625 char *x = new char[32];
626 int fd = open(FILE_TO_READ, O_RDONLY);
627 ASSERT_GT(fd, 0);
628 int sz = read(fd, x, 32);
629 ASSERT_EQ(sz, 32);
630 EXPECT_NOT_POISONED(x[0]);
631 EXPECT_NOT_POISONED(x[16]);
632 EXPECT_NOT_POISONED(x[31]);
633 close(fd);
634 delete[] x;
635 }
636
TEST(MemorySanitizer,pread)637 TEST(MemorySanitizer, pread) {
638 char *x = new char[32];
639 int fd = open(FILE_TO_READ, O_RDONLY);
640 ASSERT_GT(fd, 0);
641 int sz = pread(fd, x, 32, 0);
642 ASSERT_EQ(sz, 32);
643 EXPECT_NOT_POISONED(x[0]);
644 EXPECT_NOT_POISONED(x[16]);
645 EXPECT_NOT_POISONED(x[31]);
646 close(fd);
647 delete[] x;
648 }
649
TEST(MemorySanitizer,readv)650 TEST(MemorySanitizer, readv) {
651 char buf[2011];
652 struct iovec iov[2];
653 iov[0].iov_base = buf + 1;
654 iov[0].iov_len = 5;
655 iov[1].iov_base = buf + 10;
656 iov[1].iov_len = 2000;
657 int fd = open(FILE_TO_READ, O_RDONLY);
658 ASSERT_GT(fd, 0);
659 int sz = readv(fd, iov, 2);
660 ASSERT_GE(sz, 0);
661 ASSERT_LE(sz, 5 + 2000);
662 ASSERT_GT((size_t)sz, iov[0].iov_len);
663 EXPECT_POISONED(buf[0]);
664 EXPECT_NOT_POISONED(buf[1]);
665 EXPECT_NOT_POISONED(buf[5]);
666 EXPECT_POISONED(buf[6]);
667 EXPECT_POISONED(buf[9]);
668 EXPECT_NOT_POISONED(buf[10]);
669 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
670 EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
671 close(fd);
672 }
673
TEST(MemorySanitizer,preadv)674 TEST(MemorySanitizer, preadv) {
675 char buf[2011];
676 struct iovec iov[2];
677 iov[0].iov_base = buf + 1;
678 iov[0].iov_len = 5;
679 iov[1].iov_base = buf + 10;
680 iov[1].iov_len = 2000;
681 int fd = open(FILE_TO_READ, O_RDONLY);
682 ASSERT_GT(fd, 0);
683 int sz = preadv(fd, iov, 2, 3);
684 ASSERT_GE(sz, 0);
685 ASSERT_LE(sz, 5 + 2000);
686 ASSERT_GT((size_t)sz, iov[0].iov_len);
687 EXPECT_POISONED(buf[0]);
688 EXPECT_NOT_POISONED(buf[1]);
689 EXPECT_NOT_POISONED(buf[5]);
690 EXPECT_POISONED(buf[6]);
691 EXPECT_POISONED(buf[9]);
692 EXPECT_NOT_POISONED(buf[10]);
693 EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
694 EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
695 close(fd);
696 }
697
698 // FIXME: fails now.
TEST(MemorySanitizer,DISABLED_ioctl)699 TEST(MemorySanitizer, DISABLED_ioctl) {
700 struct winsize ws;
701 EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
702 EXPECT_NOT_POISONED(ws.ws_col);
703 }
704
TEST(MemorySanitizer,readlink)705 TEST(MemorySanitizer, readlink) {
706 char *x = new char[1000];
707 readlink(SYMLINK_TO_READ, x, 1000);
708 EXPECT_NOT_POISONED(x[0]);
709 delete [] x;
710 }
711
TEST(MemorySanitizer,readlinkat)712 TEST(MemorySanitizer, readlinkat) {
713 char *x = new char[1000];
714 readlinkat(AT_FDCWD, SYMLINK_TO_READ, x, 1000);
715 EXPECT_NOT_POISONED(x[0]);
716 delete[] x;
717 }
718
TEST(MemorySanitizer,stat)719 TEST(MemorySanitizer, stat) {
720 struct stat* st = new struct stat;
721 int res = stat(FILE_TO_READ, st);
722 ASSERT_EQ(0, res);
723 EXPECT_NOT_POISONED(st->st_dev);
724 EXPECT_NOT_POISONED(st->st_mode);
725 EXPECT_NOT_POISONED(st->st_size);
726 }
727
TEST(MemorySanitizer,fstatat)728 TEST(MemorySanitizer, fstatat) {
729 struct stat* st = new struct stat;
730 int dirfd = open(DIR_TO_READ, O_RDONLY);
731 ASSERT_GT(dirfd, 0);
732 int res = fstatat(dirfd, SUBFILE_TO_READ, st, 0);
733 ASSERT_EQ(0, res);
734 EXPECT_NOT_POISONED(st->st_dev);
735 EXPECT_NOT_POISONED(st->st_mode);
736 EXPECT_NOT_POISONED(st->st_size);
737 close(dirfd);
738 }
739
740 #if !defined(__NetBSD__)
TEST(MemorySanitizer,statfs)741 TEST(MemorySanitizer, statfs) {
742 struct statfs st;
743 int res = statfs("/", &st);
744 ASSERT_EQ(0, res);
745 EXPECT_NOT_POISONED(st.f_type);
746 EXPECT_NOT_POISONED(st.f_bfree);
747 EXPECT_NOT_POISONED(st.f_namelen);
748 }
749 #endif
750
TEST(MemorySanitizer,statvfs)751 TEST(MemorySanitizer, statvfs) {
752 struct statvfs st;
753 int res = statvfs("/", &st);
754 ASSERT_EQ(0, res);
755 EXPECT_NOT_POISONED(st.f_bsize);
756 EXPECT_NOT_POISONED(st.f_blocks);
757 EXPECT_NOT_POISONED(st.f_bfree);
758 EXPECT_NOT_POISONED(st.f_namemax);
759 }
760
TEST(MemorySanitizer,fstatvfs)761 TEST(MemorySanitizer, fstatvfs) {
762 struct statvfs st;
763 int fd = open("/", O_RDONLY | O_DIRECTORY);
764 int res = fstatvfs(fd, &st);
765 ASSERT_EQ(0, res);
766 EXPECT_NOT_POISONED(st.f_bsize);
767 EXPECT_NOT_POISONED(st.f_blocks);
768 EXPECT_NOT_POISONED(st.f_bfree);
769 EXPECT_NOT_POISONED(st.f_namemax);
770 close(fd);
771 }
772
TEST(MemorySanitizer,pipe)773 TEST(MemorySanitizer, pipe) {
774 int* pipefd = new int[2];
775 int res = pipe(pipefd);
776 ASSERT_EQ(0, res);
777 EXPECT_NOT_POISONED(pipefd[0]);
778 EXPECT_NOT_POISONED(pipefd[1]);
779 close(pipefd[0]);
780 close(pipefd[1]);
781 }
782
TEST(MemorySanitizer,pipe2)783 TEST(MemorySanitizer, pipe2) {
784 int* pipefd = new int[2];
785 int res = pipe2(pipefd, O_NONBLOCK);
786 ASSERT_EQ(0, res);
787 EXPECT_NOT_POISONED(pipefd[0]);
788 EXPECT_NOT_POISONED(pipefd[1]);
789 close(pipefd[0]);
790 close(pipefd[1]);
791 }
792
TEST(MemorySanitizer,socketpair)793 TEST(MemorySanitizer, socketpair) {
794 int sv[2];
795 int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
796 ASSERT_EQ(0, res);
797 EXPECT_NOT_POISONED(sv[0]);
798 EXPECT_NOT_POISONED(sv[1]);
799 close(sv[0]);
800 close(sv[1]);
801 }
802
TEST(MemorySanitizer,poll)803 TEST(MemorySanitizer, poll) {
804 int* pipefd = new int[2];
805 int res = pipe(pipefd);
806 ASSERT_EQ(0, res);
807
808 char data = 42;
809 res = write(pipefd[1], &data, 1);
810 ASSERT_EQ(1, res);
811
812 pollfd fds[2];
813 fds[0].fd = pipefd[0];
814 fds[0].events = POLLIN;
815 fds[1].fd = pipefd[1];
816 fds[1].events = POLLIN;
817 res = poll(fds, 2, 500);
818 ASSERT_EQ(1, res);
819 EXPECT_NOT_POISONED(fds[0].revents);
820 EXPECT_NOT_POISONED(fds[1].revents);
821
822 close(pipefd[0]);
823 close(pipefd[1]);
824 }
825
826 #if !defined (__FreeBSD__) && !defined (__NetBSD__)
TEST(MemorySanitizer,ppoll)827 TEST(MemorySanitizer, ppoll) {
828 int* pipefd = new int[2];
829 int res = pipe(pipefd);
830 ASSERT_EQ(0, res);
831
832 char data = 42;
833 res = write(pipefd[1], &data, 1);
834 ASSERT_EQ(1, res);
835
836 pollfd fds[2];
837 fds[0].fd = pipefd[0];
838 fds[0].events = POLLIN;
839 fds[1].fd = pipefd[1];
840 fds[1].events = POLLIN;
841 sigset_t ss;
842 sigemptyset(&ss);
843 res = ppoll(fds, 2, NULL, &ss);
844 ASSERT_EQ(1, res);
845 EXPECT_NOT_POISONED(fds[0].revents);
846 EXPECT_NOT_POISONED(fds[1].revents);
847
848 close(pipefd[0]);
849 close(pipefd[1]);
850 }
851 #endif
852
TEST(MemorySanitizer,poll_positive)853 TEST(MemorySanitizer, poll_positive) {
854 int* pipefd = new int[2];
855 int res = pipe(pipefd);
856 ASSERT_EQ(0, res);
857
858 pollfd fds[2];
859 fds[0].fd = pipefd[0];
860 fds[0].events = POLLIN;
861 // fds[1].fd uninitialized
862 fds[1].events = POLLIN;
863 EXPECT_UMR(poll(fds, 2, 0));
864
865 close(pipefd[0]);
866 close(pipefd[1]);
867 }
868
TEST(MemorySanitizer,bind_getsockname)869 TEST(MemorySanitizer, bind_getsockname) {
870 int sock = socket(AF_UNIX, SOCK_STREAM, 0);
871
872 struct sockaddr_in sai;
873 memset(&sai, 0, sizeof(sai));
874 sai.sin_family = AF_UNIX;
875 int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
876
877 ASSERT_EQ(0, res);
878 char buf[200];
879 socklen_t addrlen;
880 EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
881
882 addrlen = sizeof(buf);
883 res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
884 EXPECT_NOT_POISONED(addrlen);
885 EXPECT_NOT_POISONED(buf[0]);
886 EXPECT_NOT_POISONED(buf[addrlen - 1]);
887 EXPECT_POISONED(buf[addrlen]);
888 close(sock);
889 }
890
891 class SocketAddr {
892 public:
893 virtual ~SocketAddr() = default;
894 virtual struct sockaddr *ptr() = 0;
895 virtual size_t size() const = 0;
896
897 template <class... Args>
898 static std::unique_ptr<SocketAddr> Create(int family, Args... args);
899 };
900
901 class SocketAddr4 : public SocketAddr {
902 public:
SocketAddr4()903 SocketAddr4() { EXPECT_POISONED(sai_); }
SocketAddr4(uint16_t port)904 explicit SocketAddr4(uint16_t port) {
905 memset(&sai_, 0, sizeof(sai_));
906 sai_.sin_family = AF_INET;
907 sai_.sin_port = port;
908 sai_.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
909 }
910
ptr()911 sockaddr *ptr() override { return reinterpret_cast<sockaddr *>(&sai_); }
912
size() const913 size_t size() const override { return sizeof(sai_); }
914
915 private:
916 sockaddr_in sai_;
917 };
918
919 class SocketAddr6 : public SocketAddr {
920 public:
SocketAddr6()921 SocketAddr6() { EXPECT_POISONED(sai_); }
SocketAddr6(uint16_t port)922 explicit SocketAddr6(uint16_t port) {
923 memset(&sai_, 0, sizeof(sai_));
924 sai_.sin6_family = AF_INET6;
925 sai_.sin6_port = port;
926 sai_.sin6_addr = in6addr_loopback;
927 }
928
ptr()929 sockaddr *ptr() override { return reinterpret_cast<sockaddr *>(&sai_); }
930
size() const931 size_t size() const override { return sizeof(sai_); }
932
933 private:
934 sockaddr_in6 sai_;
935 };
936
937 template <class... Args>
Create(int family,Args...args)938 std::unique_ptr<SocketAddr> SocketAddr::Create(int family, Args... args) {
939 if (family == AF_INET)
940 return std::unique_ptr<SocketAddr>(new SocketAddr4(args...));
941 return std::unique_ptr<SocketAddr>(new SocketAddr6(args...));
942 }
943
944 class MemorySanitizerIpTest : public ::testing::TestWithParam<int> {
945 public:
SetUp()946 void SetUp() override {
947 ASSERT_TRUE(GetParam() == AF_INET || GetParam() == AF_INET6);
948 }
949
950 template <class... Args>
CreateSockAddr(Args...args) const951 std::unique_ptr<SocketAddr> CreateSockAddr(Args... args) const {
952 return SocketAddr::Create(GetParam(), args...);
953 }
954
CreateSocket(int socket_type) const955 int CreateSocket(int socket_type) const {
956 return socket(GetParam(), socket_type, 0);
957 }
958 };
959
GetAvailableIpSocketFamilies()960 std::vector<int> GetAvailableIpSocketFamilies() {
961 std::vector<int> result;
962
963 for (int i : {AF_INET, AF_INET6}) {
964 int s = socket(i, SOCK_STREAM, 0);
965 if (s > 0) {
966 auto sai = SocketAddr::Create(i, 0);
967 if (bind(s, sai->ptr(), sai->size()) == 0) result.push_back(i);
968 close(s);
969 }
970 }
971
972 return result;
973 }
974
975 INSTANTIATE_TEST_CASE_P(IpTests, MemorySanitizerIpTest,
976 ::testing::ValuesIn(GetAvailableIpSocketFamilies()));
977
TEST_P(MemorySanitizerIpTest,accept)978 TEST_P(MemorySanitizerIpTest, accept) {
979 int listen_socket = CreateSocket(SOCK_STREAM);
980 ASSERT_LT(0, listen_socket);
981
982 auto sai = CreateSockAddr(0);
983 int res = bind(listen_socket, sai->ptr(), sai->size());
984 ASSERT_EQ(0, res);
985
986 res = listen(listen_socket, 1);
987 ASSERT_EQ(0, res);
988
989 socklen_t sz = sai->size();
990 res = getsockname(listen_socket, sai->ptr(), &sz);
991 ASSERT_EQ(0, res);
992 ASSERT_EQ(sai->size(), sz);
993
994 int connect_socket = CreateSocket(SOCK_STREAM);
995 ASSERT_LT(0, connect_socket);
996 res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
997 ASSERT_EQ(0, res);
998 res = connect(connect_socket, sai->ptr(), sai->size());
999 // On FreeBSD this connection completes immediately.
1000 if (res != 0) {
1001 ASSERT_EQ(-1, res);
1002 ASSERT_EQ(EINPROGRESS, errno);
1003 }
1004
1005 __msan_poison(sai->ptr(), sai->size());
1006 int new_sock = accept(listen_socket, sai->ptr(), &sz);
1007 ASSERT_LT(0, new_sock);
1008 ASSERT_EQ(sai->size(), sz);
1009 EXPECT_NOT_POISONED2(sai->ptr(), sai->size());
1010
1011 __msan_poison(sai->ptr(), sai->size());
1012 res = getpeername(new_sock, sai->ptr(), &sz);
1013 ASSERT_EQ(0, res);
1014 ASSERT_EQ(sai->size(), sz);
1015 EXPECT_NOT_POISONED2(sai->ptr(), sai->size());
1016
1017 close(new_sock);
1018 close(connect_socket);
1019 close(listen_socket);
1020 }
1021
TEST_P(MemorySanitizerIpTest,recvmsg)1022 TEST_P(MemorySanitizerIpTest, recvmsg) {
1023 int server_socket = CreateSocket(SOCK_DGRAM);
1024 ASSERT_LT(0, server_socket);
1025
1026 auto sai = CreateSockAddr(0);
1027 int res = bind(server_socket, sai->ptr(), sai->size());
1028 ASSERT_EQ(0, res);
1029
1030 socklen_t sz = sai->size();
1031 res = getsockname(server_socket, sai->ptr(), &sz);
1032 ASSERT_EQ(0, res);
1033 ASSERT_EQ(sai->size(), sz);
1034
1035 int client_socket = CreateSocket(SOCK_DGRAM);
1036 ASSERT_LT(0, client_socket);
1037
1038 auto client_sai = CreateSockAddr(0);
1039 res = bind(client_socket, client_sai->ptr(), client_sai->size());
1040 ASSERT_EQ(0, res);
1041
1042 sz = client_sai->size();
1043 res = getsockname(client_socket, client_sai->ptr(), &sz);
1044 ASSERT_EQ(0, res);
1045 ASSERT_EQ(client_sai->size(), sz);
1046
1047 const char *s = "message text";
1048 struct iovec iov;
1049 iov.iov_base = (void *)s;
1050 iov.iov_len = strlen(s) + 1;
1051 struct msghdr msg;
1052 memset(&msg, 0, sizeof(msg));
1053 msg.msg_name = sai->ptr();
1054 msg.msg_namelen = sai->size();
1055 msg.msg_iov = &iov;
1056 msg.msg_iovlen = 1;
1057 res = sendmsg(client_socket, &msg, 0);
1058 ASSERT_LT(0, res);
1059
1060 char buf[1000];
1061 struct iovec recv_iov;
1062 recv_iov.iov_base = (void *)&buf;
1063 recv_iov.iov_len = sizeof(buf);
1064 auto recv_sai = CreateSockAddr();
1065 struct msghdr recv_msg;
1066 memset(&recv_msg, 0, sizeof(recv_msg));
1067 recv_msg.msg_name = recv_sai->ptr();
1068 recv_msg.msg_namelen = recv_sai->size();
1069 recv_msg.msg_iov = &recv_iov;
1070 recv_msg.msg_iovlen = 1;
1071 res = recvmsg(server_socket, &recv_msg, 0);
1072 ASSERT_LT(0, res);
1073
1074 ASSERT_EQ(recv_sai->size(), recv_msg.msg_namelen);
1075 EXPECT_NOT_POISONED2(recv_sai->ptr(), recv_sai->size());
1076 EXPECT_STREQ(s, buf);
1077
1078 close(server_socket);
1079 close(client_socket);
1080 }
1081
1082 #define EXPECT_HOSTENT_NOT_POISONED(he) \
1083 do { \
1084 EXPECT_NOT_POISONED(*(he)); \
1085 ASSERT_NE((void *)0, (he)->h_name); \
1086 ASSERT_NE((void *)0, (he)->h_aliases); \
1087 ASSERT_NE((void *)0, (he)->h_addr_list); \
1088 EXPECT_NOT_POISONED(strlen((he)->h_name)); \
1089 char **p = (he)->h_aliases; \
1090 while (*p) { \
1091 EXPECT_NOT_POISONED(strlen(*p)); \
1092 ++p; \
1093 } \
1094 char **q = (he)->h_addr_list; \
1095 while (*q) { \
1096 EXPECT_NOT_POISONED(*q[0]); \
1097 ++q; \
1098 } \
1099 EXPECT_NOT_POISONED(*q); \
1100 } while (0)
1101
TEST(MemorySanitizer,gethostent)1102 TEST(MemorySanitizer, gethostent) {
1103 sethostent(0);
1104 struct hostent *he = gethostent();
1105 ASSERT_NE((void *)NULL, he);
1106 EXPECT_HOSTENT_NOT_POISONED(he);
1107 }
1108
1109 #ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
1110
TEST(MemorySanitizer,gethostbyname)1111 TEST(MemorySanitizer, gethostbyname) {
1112 struct hostent *he = gethostbyname("localhost");
1113 ASSERT_NE((void *)NULL, he);
1114 EXPECT_HOSTENT_NOT_POISONED(he);
1115 }
1116
1117 #endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
1118
TEST(MemorySanitizer,getaddrinfo)1119 TEST(MemorySanitizer, getaddrinfo) {
1120 struct addrinfo *ai;
1121 struct addrinfo hints;
1122 memset(&hints, 0, sizeof(hints));
1123 hints.ai_family = AF_INET;
1124 int res = getaddrinfo("localhost", NULL, &hints, &ai);
1125 ASSERT_EQ(0, res);
1126 EXPECT_NOT_POISONED(*ai);
1127 ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
1128 EXPECT_NOT_POISONED(*(sockaddr_in *)ai->ai_addr);
1129 }
1130
TEST(MemorySanitizer,getnameinfo)1131 TEST(MemorySanitizer, getnameinfo) {
1132 struct sockaddr_in sai;
1133 memset(&sai, 0, sizeof(sai));
1134 sai.sin_family = AF_INET;
1135 sai.sin_port = 80;
1136 sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
1137 char host[500];
1138 char serv[500];
1139 int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
1140 sizeof(host), serv, sizeof(serv), 0);
1141 ASSERT_EQ(0, res);
1142 EXPECT_NOT_POISONED(host[0]);
1143 EXPECT_POISONED(host[sizeof(host) - 1]);
1144
1145 ASSERT_NE(0U, strlen(host));
1146 EXPECT_NOT_POISONED(serv[0]);
1147 EXPECT_POISONED(serv[sizeof(serv) - 1]);
1148 ASSERT_NE(0U, strlen(serv));
1149 }
1150
TEST(MemorySanitizer,gethostbyname2)1151 TEST(MemorySanitizer, gethostbyname2) {
1152 struct hostent *he = gethostbyname2("localhost", AF_INET);
1153 ASSERT_NE((void *)NULL, he);
1154 EXPECT_HOSTENT_NOT_POISONED(he);
1155 }
1156
TEST(MemorySanitizer,gethostbyaddr)1157 TEST(MemorySanitizer, gethostbyaddr) {
1158 in_addr_t addr = inet_addr("127.0.0.1");
1159 EXPECT_NOT_POISONED(addr);
1160 struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
1161 ASSERT_NE((void *)NULL, he);
1162 EXPECT_HOSTENT_NOT_POISONED(he);
1163 }
1164
1165 #if !defined(__NetBSD__)
TEST(MemorySanitizer,gethostent_r)1166 TEST(MemorySanitizer, gethostent_r) {
1167 sethostent(0);
1168 char buf[2000];
1169 struct hostent he;
1170 struct hostent *result;
1171 int err;
1172 int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
1173 ASSERT_EQ(0, res);
1174 EXPECT_NOT_POISONED(result);
1175 ASSERT_NE((void *)NULL, result);
1176 EXPECT_HOSTENT_NOT_POISONED(result);
1177 EXPECT_NOT_POISONED(err);
1178 }
1179 #endif
1180
1181 #if !defined(__NetBSD__)
TEST(MemorySanitizer,gethostbyname_r)1182 TEST(MemorySanitizer, gethostbyname_r) {
1183 char buf[2000];
1184 struct hostent he;
1185 struct hostent *result;
1186 int err;
1187 int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
1188 ASSERT_EQ(0, res);
1189 EXPECT_NOT_POISONED(result);
1190 ASSERT_NE((void *)NULL, result);
1191 EXPECT_HOSTENT_NOT_POISONED(result);
1192 EXPECT_NOT_POISONED(err);
1193 }
1194 #endif
1195
1196 #if !defined(__NetBSD__)
TEST(MemorySanitizer,gethostbyname_r_bad_host_name)1197 TEST(MemorySanitizer, gethostbyname_r_bad_host_name) {
1198 char buf[2000];
1199 struct hostent he;
1200 struct hostent *result;
1201 int err;
1202 int res = gethostbyname_r("bad-host-name", &he, buf, sizeof(buf), &result, &err);
1203 ASSERT_EQ((struct hostent *)0, result);
1204 EXPECT_NOT_POISONED(err);
1205 }
1206 #endif
1207
1208 #if !defined(__NetBSD__)
TEST(MemorySanitizer,gethostbyname_r_erange)1209 TEST(MemorySanitizer, gethostbyname_r_erange) {
1210 char buf[5];
1211 struct hostent he;
1212 struct hostent *result;
1213 int err;
1214 gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
1215 ASSERT_EQ(ERANGE, errno);
1216 EXPECT_NOT_POISONED(err);
1217 }
1218 #endif
1219
1220 #if !defined(__NetBSD__)
TEST(MemorySanitizer,gethostbyname2_r)1221 TEST(MemorySanitizer, gethostbyname2_r) {
1222 char buf[2000];
1223 struct hostent he;
1224 struct hostent *result;
1225 int err;
1226 int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
1227 &result, &err);
1228 ASSERT_EQ(0, res);
1229 EXPECT_NOT_POISONED(result);
1230 ASSERT_NE((void *)NULL, result);
1231 EXPECT_HOSTENT_NOT_POISONED(result);
1232 EXPECT_NOT_POISONED(err);
1233 }
1234 #endif
1235
1236 #if !defined(__NetBSD__)
TEST(MemorySanitizer,gethostbyaddr_r)1237 TEST(MemorySanitizer, gethostbyaddr_r) {
1238 char buf[2000];
1239 struct hostent he;
1240 struct hostent *result;
1241 int err;
1242 in_addr_t addr = inet_addr("127.0.0.1");
1243 EXPECT_NOT_POISONED(addr);
1244 int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
1245 &result, &err);
1246 ASSERT_EQ(0, res);
1247 EXPECT_NOT_POISONED(result);
1248 ASSERT_NE((void *)NULL, result);
1249 EXPECT_HOSTENT_NOT_POISONED(result);
1250 EXPECT_NOT_POISONED(err);
1251 }
1252 #endif
1253
TEST(MemorySanitizer,getsockopt)1254 TEST(MemorySanitizer, getsockopt) {
1255 int sock = socket(AF_UNIX, SOCK_STREAM, 0);
1256 struct linger l[2];
1257 socklen_t sz = sizeof(l[0]);
1258 int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
1259 ASSERT_EQ(0, res);
1260 ASSERT_EQ(sizeof(l[0]), sz);
1261 EXPECT_NOT_POISONED(l[0]);
1262 EXPECT_POISONED(*(char *)(l + 1));
1263 }
1264
TEST(MemorySanitizer,getcwd)1265 TEST(MemorySanitizer, getcwd) {
1266 char path[PATH_MAX + 1];
1267 char* res = getcwd(path, sizeof(path));
1268 ASSERT_TRUE(res != NULL);
1269 EXPECT_NOT_POISONED(path[0]);
1270 }
1271
TEST(MemorySanitizer,getcwd_gnu)1272 TEST(MemorySanitizer, getcwd_gnu) {
1273 char* res = getcwd(NULL, 0);
1274 ASSERT_TRUE(res != NULL);
1275 EXPECT_NOT_POISONED(res[0]);
1276 free(res);
1277 }
1278
1279 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,get_current_dir_name)1280 TEST(MemorySanitizer, get_current_dir_name) {
1281 char* res = get_current_dir_name();
1282 ASSERT_TRUE(res != NULL);
1283 EXPECT_NOT_POISONED(res[0]);
1284 free(res);
1285 }
1286 #endif
1287
TEST(MemorySanitizer,shmctl)1288 TEST(MemorySanitizer, shmctl) {
1289 int id = shmget(IPC_PRIVATE, 4096, 0644 | IPC_CREAT);
1290 ASSERT_GT(id, -1);
1291
1292 struct shmid_ds ds;
1293 int res = shmctl(id, IPC_STAT, &ds);
1294 ASSERT_GT(res, -1);
1295 EXPECT_NOT_POISONED(ds);
1296
1297 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
1298 struct shminfo si;
1299 res = shmctl(id, IPC_INFO, (struct shmid_ds *)&si);
1300 ASSERT_GT(res, -1);
1301 EXPECT_NOT_POISONED(si);
1302
1303 struct shm_info s_i;
1304 res = shmctl(id, SHM_INFO, (struct shmid_ds *)&s_i);
1305 ASSERT_GT(res, -1);
1306 EXPECT_NOT_POISONED(s_i);
1307 #endif
1308
1309 res = shmctl(id, IPC_RMID, 0);
1310 ASSERT_GT(res, -1);
1311 }
1312
TEST(MemorySanitizer,shmat)1313 TEST(MemorySanitizer, shmat) {
1314 const int kShmSize = 4096;
1315 void *mapping_start = mmap(NULL, kShmSize + SHMLBA, PROT_READ | PROT_WRITE,
1316 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1317 ASSERT_NE(MAP_FAILED, mapping_start);
1318
1319 void *p = (void *)(((unsigned long)mapping_start + SHMLBA - 1) / SHMLBA * SHMLBA);
1320 // p is now SHMLBA-aligned;
1321
1322 ((char *)p)[10] = *GetPoisoned<U1>();
1323 ((char *)p)[kShmSize - 1] = *GetPoisoned<U1>();
1324
1325 int res = munmap(mapping_start, kShmSize + SHMLBA);
1326 ASSERT_EQ(0, res);
1327
1328 int id = shmget(IPC_PRIVATE, kShmSize, 0644 | IPC_CREAT);
1329 ASSERT_GT(id, -1);
1330
1331 void *q = shmat(id, p, 0);
1332 ASSERT_EQ(p, q);
1333
1334 EXPECT_NOT_POISONED(((char *)q)[0]);
1335 EXPECT_NOT_POISONED(((char *)q)[10]);
1336 EXPECT_NOT_POISONED(((char *)q)[kShmSize - 1]);
1337
1338 res = shmdt(q);
1339 ASSERT_EQ(0, res);
1340
1341 res = shmctl(id, IPC_RMID, 0);
1342 ASSERT_GT(res, -1);
1343 }
1344
1345 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,random_r)1346 TEST(MemorySanitizer, random_r) {
1347 int32_t x;
1348 char z[64];
1349 memset(z, 0, sizeof(z));
1350
1351 struct random_data buf;
1352 memset(&buf, 0, sizeof(buf));
1353
1354 int res = initstate_r(0, z, sizeof(z), &buf);
1355 ASSERT_EQ(0, res);
1356
1357 res = random_r(&buf, &x);
1358 ASSERT_EQ(0, res);
1359 EXPECT_NOT_POISONED(x);
1360 }
1361 #endif
1362
TEST(MemorySanitizer,confstr)1363 TEST(MemorySanitizer, confstr) {
1364 char buf[3];
1365 size_t res = confstr(_CS_PATH, buf, sizeof(buf));
1366 ASSERT_GT(res, sizeof(buf));
1367 EXPECT_NOT_POISONED(buf[0]);
1368 EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]);
1369
1370 char buf2[1000];
1371 res = confstr(_CS_PATH, buf2, sizeof(buf2));
1372 ASSERT_LT(res, sizeof(buf2));
1373 EXPECT_NOT_POISONED(buf2[0]);
1374 EXPECT_NOT_POISONED(buf2[res - 1]);
1375 EXPECT_POISONED(buf2[res]);
1376 ASSERT_EQ(res, strlen(buf2) + 1);
1377 }
1378
TEST(MemorySanitizer,opendir)1379 TEST(MemorySanitizer, opendir) {
1380 DIR *dir = opendir(".");
1381 closedir(dir);
1382
1383 char name[10] = ".";
1384 __msan_poison(name, sizeof(name));
1385 EXPECT_UMR(dir = opendir(name));
1386 closedir(dir);
1387 }
1388
TEST(MemorySanitizer,readdir)1389 TEST(MemorySanitizer, readdir) {
1390 DIR *dir = opendir(".");
1391 struct dirent *d = readdir(dir);
1392 ASSERT_TRUE(d != NULL);
1393 EXPECT_NOT_POISONED(d->d_name[0]);
1394 closedir(dir);
1395 }
1396
TEST(MemorySanitizer,readdir_r)1397 TEST(MemorySanitizer, readdir_r) {
1398 DIR *dir = opendir(".");
1399 struct dirent d;
1400 struct dirent *pd;
1401 int res = readdir_r(dir, &d, &pd);
1402 ASSERT_EQ(0, res);
1403 EXPECT_NOT_POISONED(pd);
1404 EXPECT_NOT_POISONED(d.d_name[0]);
1405 closedir(dir);
1406 }
1407
TEST(MemorySanitizer,realpath)1408 TEST(MemorySanitizer, realpath) {
1409 const char* relpath = ".";
1410 char path[PATH_MAX + 1];
1411 char* res = realpath(relpath, path);
1412 ASSERT_TRUE(res != NULL);
1413 EXPECT_NOT_POISONED(path[0]);
1414 }
1415
TEST(MemorySanitizer,realpath_null)1416 TEST(MemorySanitizer, realpath_null) {
1417 const char* relpath = ".";
1418 char* res = realpath(relpath, NULL);
1419 printf("%d, %s\n", errno, strerror(errno));
1420 ASSERT_TRUE(res != NULL);
1421 EXPECT_NOT_POISONED(res[0]);
1422 free(res);
1423 }
1424
1425 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,canonicalize_file_name)1426 TEST(MemorySanitizer, canonicalize_file_name) {
1427 const char* relpath = ".";
1428 char* res = canonicalize_file_name(relpath);
1429 ASSERT_TRUE(res != NULL);
1430 EXPECT_NOT_POISONED(res[0]);
1431 free(res);
1432 }
1433 #endif
1434
1435 extern char **environ;
1436
TEST(MemorySanitizer,setenv)1437 TEST(MemorySanitizer, setenv) {
1438 setenv("AAA", "BBB", 1);
1439 for (char **envp = environ; *envp; ++envp) {
1440 EXPECT_NOT_POISONED(*envp);
1441 EXPECT_NOT_POISONED(*envp[0]);
1442 }
1443 }
1444
TEST(MemorySanitizer,putenv)1445 TEST(MemorySanitizer, putenv) {
1446 char s[] = "AAA=BBB";
1447 putenv(s);
1448 for (char **envp = environ; *envp; ++envp) {
1449 EXPECT_NOT_POISONED(*envp);
1450 EXPECT_NOT_POISONED(*envp[0]);
1451 }
1452 }
1453
TEST(MemorySanitizer,memcpy)1454 TEST(MemorySanitizer, memcpy) {
1455 char* x = new char[2];
1456 char* y = new char[2];
1457 x[0] = 1;
1458 x[1] = *GetPoisoned<char>();
1459 memcpy(y, x, 2);
1460 EXPECT_NOT_POISONED(y[0]);
1461 EXPECT_POISONED(y[1]);
1462 }
1463
TestUnalignedMemcpy(unsigned left,unsigned right,bool src_is_aligned,bool src_is_poisoned,bool dst_is_poisoned)1464 void TestUnalignedMemcpy(unsigned left, unsigned right, bool src_is_aligned,
1465 bool src_is_poisoned, bool dst_is_poisoned) {
1466 fprintf(stderr, "%s(%d, %d, %d, %d, %d)\n", __func__, left, right,
1467 src_is_aligned, src_is_poisoned, dst_is_poisoned);
1468
1469 const unsigned sz = 20;
1470 U4 dst_origin, src_origin;
1471 char *dst = (char *)malloc(sz);
1472 if (dst_is_poisoned)
1473 dst_origin = __msan_get_origin(dst);
1474 else
1475 memset(dst, 0, sz);
1476
1477 char *src = (char *)malloc(sz);
1478 if (src_is_poisoned)
1479 src_origin = __msan_get_origin(src);
1480 else
1481 memset(src, 0, sz);
1482
1483 memcpy(dst + left, src_is_aligned ? src + left : src, sz - left - right);
1484
1485 for (unsigned i = 0; i < (left & (~3U)); ++i)
1486 if (dst_is_poisoned)
1487 EXPECT_POISONED_O(dst[i], dst_origin);
1488 else
1489 EXPECT_NOT_POISONED(dst[i]);
1490
1491 for (unsigned i = 0; i < (right & (~3U)); ++i)
1492 if (dst_is_poisoned)
1493 EXPECT_POISONED_O(dst[sz - i - 1], dst_origin);
1494 else
1495 EXPECT_NOT_POISONED(dst[sz - i - 1]);
1496
1497 for (unsigned i = left; i < sz - right; ++i)
1498 if (src_is_poisoned)
1499 EXPECT_POISONED_O(dst[i], src_origin);
1500 else
1501 EXPECT_NOT_POISONED(dst[i]);
1502
1503 free(dst);
1504 free(src);
1505 }
1506
TEST(MemorySanitizer,memcpy_unaligned)1507 TEST(MemorySanitizer, memcpy_unaligned) {
1508 for (int i = 0; i < 10; ++i)
1509 for (int j = 0; j < 10; ++j)
1510 for (int aligned = 0; aligned < 2; ++aligned)
1511 for (int srcp = 0; srcp < 2; ++srcp)
1512 for (int dstp = 0; dstp < 2; ++dstp)
1513 TestUnalignedMemcpy(i, j, aligned, srcp, dstp);
1514 }
1515
TEST(MemorySanitizer,memmove)1516 TEST(MemorySanitizer, memmove) {
1517 char* x = new char[2];
1518 char* y = new char[2];
1519 x[0] = 1;
1520 x[1] = *GetPoisoned<char>();
1521 memmove(y, x, 2);
1522 EXPECT_NOT_POISONED(y[0]);
1523 EXPECT_POISONED(y[1]);
1524 }
1525
TEST(MemorySanitizer,memccpy_nomatch)1526 TEST(MemorySanitizer, memccpy_nomatch) {
1527 char* x = new char[5];
1528 char* y = new char[5];
1529 strcpy(x, "abc");
1530 memccpy(y, x, 'd', 4);
1531 EXPECT_NOT_POISONED(y[0]);
1532 EXPECT_NOT_POISONED(y[1]);
1533 EXPECT_NOT_POISONED(y[2]);
1534 EXPECT_NOT_POISONED(y[3]);
1535 EXPECT_POISONED(y[4]);
1536 delete[] x;
1537 delete[] y;
1538 }
1539
TEST(MemorySanitizer,memccpy_match)1540 TEST(MemorySanitizer, memccpy_match) {
1541 char* x = new char[5];
1542 char* y = new char[5];
1543 strcpy(x, "abc");
1544 memccpy(y, x, 'b', 4);
1545 EXPECT_NOT_POISONED(y[0]);
1546 EXPECT_NOT_POISONED(y[1]);
1547 EXPECT_POISONED(y[2]);
1548 EXPECT_POISONED(y[3]);
1549 EXPECT_POISONED(y[4]);
1550 delete[] x;
1551 delete[] y;
1552 }
1553
TEST(MemorySanitizer,memccpy_nomatch_positive)1554 TEST(MemorySanitizer, memccpy_nomatch_positive) {
1555 char* x = new char[5];
1556 char* y = new char[5];
1557 strcpy(x, "abc");
1558 EXPECT_UMR(memccpy(y, x, 'd', 5));
1559 delete[] x;
1560 delete[] y;
1561 }
1562
TEST(MemorySanitizer,memccpy_match_positive)1563 TEST(MemorySanitizer, memccpy_match_positive) {
1564 char* x = new char[5];
1565 char* y = new char[5];
1566 x[0] = 'a';
1567 x[2] = 'b';
1568 EXPECT_UMR(memccpy(y, x, 'b', 5));
1569 delete[] x;
1570 delete[] y;
1571 }
1572
TEST(MemorySanitizer,bcopy)1573 TEST(MemorySanitizer, bcopy) {
1574 char* x = new char[2];
1575 char* y = new char[2];
1576 x[0] = 1;
1577 x[1] = *GetPoisoned<char>();
1578 bcopy(x, y, 2);
1579 EXPECT_NOT_POISONED(y[0]);
1580 EXPECT_POISONED(y[1]);
1581 }
1582
TEST(MemorySanitizer,strdup)1583 TEST(MemorySanitizer, strdup) {
1584 char buf[4] = "abc";
1585 __msan_poison(buf + 2, sizeof(*buf));
1586 char *x = strdup(buf);
1587 EXPECT_NOT_POISONED(x[0]);
1588 EXPECT_NOT_POISONED(x[1]);
1589 EXPECT_POISONED(x[2]);
1590 EXPECT_NOT_POISONED(x[3]);
1591 free(x);
1592 }
1593
TEST(MemorySanitizer,strndup)1594 TEST(MemorySanitizer, strndup) {
1595 char buf[4] = "abc";
1596 __msan_poison(buf + 2, sizeof(*buf));
1597 char *x;
1598 EXPECT_UMR(x = strndup(buf, 3));
1599 EXPECT_NOT_POISONED(x[0]);
1600 EXPECT_NOT_POISONED(x[1]);
1601 EXPECT_POISONED(x[2]);
1602 EXPECT_NOT_POISONED(x[3]);
1603 free(x);
1604 // Check handling of non 0 terminated strings.
1605 buf[3] = 'z';
1606 __msan_poison(buf + 3, sizeof(*buf));
1607 EXPECT_UMR(x = strndup(buf + 3, 1));
1608 EXPECT_POISONED(x[0]);
1609 EXPECT_NOT_POISONED(x[1]);
1610 free(x);
1611 }
1612
TEST(MemorySanitizer,strndup_short)1613 TEST(MemorySanitizer, strndup_short) {
1614 char buf[4] = "abc";
1615 __msan_poison(buf + 1, sizeof(*buf));
1616 __msan_poison(buf + 2, sizeof(*buf));
1617 char *x;
1618 EXPECT_UMR(x = strndup(buf, 2));
1619 EXPECT_NOT_POISONED(x[0]);
1620 EXPECT_POISONED(x[1]);
1621 EXPECT_NOT_POISONED(x[2]);
1622 free(x);
1623 }
1624
1625
1626 template<class T, int size>
TestOverlapMemmove()1627 void TestOverlapMemmove() {
1628 T *x = new T[size];
1629 ASSERT_GE(size, 3);
1630 x[2] = 0;
1631 memmove(x, x + 1, (size - 1) * sizeof(T));
1632 EXPECT_NOT_POISONED(x[1]);
1633 EXPECT_POISONED(x[0]);
1634 EXPECT_POISONED(x[2]);
1635 delete [] x;
1636 }
1637
TEST(MemorySanitizer,overlap_memmove)1638 TEST(MemorySanitizer, overlap_memmove) {
1639 TestOverlapMemmove<U1, 10>();
1640 TestOverlapMemmove<U1, 1000>();
1641 TestOverlapMemmove<U8, 4>();
1642 TestOverlapMemmove<U8, 1000>();
1643 }
1644
TEST(MemorySanitizer,strcpy)1645 TEST(MemorySanitizer, strcpy) {
1646 char* x = new char[3];
1647 char* y = new char[3];
1648 x[0] = 'a';
1649 x[1] = *GetPoisoned<char>(1, 1);
1650 x[2] = 0;
1651 strcpy(y, x);
1652 EXPECT_NOT_POISONED(y[0]);
1653 EXPECT_POISONED(y[1]);
1654 EXPECT_NOT_POISONED(y[2]);
1655 }
1656
TEST(MemorySanitizer,strncpy)1657 TEST(MemorySanitizer, strncpy) {
1658 char* x = new char[3];
1659 char* y = new char[5];
1660 x[0] = 'a';
1661 x[1] = *GetPoisoned<char>(1, 1);
1662 x[2] = '\0';
1663 strncpy(y, x, 4);
1664 EXPECT_NOT_POISONED(y[0]);
1665 EXPECT_POISONED(y[1]);
1666 EXPECT_NOT_POISONED(y[2]);
1667 EXPECT_NOT_POISONED(y[3]);
1668 EXPECT_POISONED(y[4]);
1669 }
1670
TEST(MemorySanitizer,stpcpy)1671 TEST(MemorySanitizer, stpcpy) {
1672 char* x = new char[3];
1673 char* y = new char[3];
1674 x[0] = 'a';
1675 x[1] = *GetPoisoned<char>(1, 1);
1676 x[2] = 0;
1677 char *res = stpcpy(y, x);
1678 ASSERT_EQ(res, y + 2);
1679 EXPECT_NOT_POISONED(y[0]);
1680 EXPECT_POISONED(y[1]);
1681 EXPECT_NOT_POISONED(y[2]);
1682 }
1683
TEST(MemorySanitizer,strcat)1684 TEST(MemorySanitizer, strcat) {
1685 char a[10];
1686 char b[] = "def";
1687 strcpy(a, "abc");
1688 __msan_poison(b + 1, 1);
1689 strcat(a, b);
1690 EXPECT_NOT_POISONED(a[3]);
1691 EXPECT_POISONED(a[4]);
1692 EXPECT_NOT_POISONED(a[5]);
1693 EXPECT_NOT_POISONED(a[6]);
1694 EXPECT_POISONED(a[7]);
1695 }
1696
TEST(MemorySanitizer,strncat)1697 TEST(MemorySanitizer, strncat) {
1698 char a[10];
1699 char b[] = "def";
1700 strcpy(a, "abc");
1701 __msan_poison(b + 1, 1);
1702 strncat(a, b, 5);
1703 EXPECT_NOT_POISONED(a[3]);
1704 EXPECT_POISONED(a[4]);
1705 EXPECT_NOT_POISONED(a[5]);
1706 EXPECT_NOT_POISONED(a[6]);
1707 EXPECT_POISONED(a[7]);
1708 }
1709
TEST(MemorySanitizer,strncat_overflow)1710 TEST(MemorySanitizer, strncat_overflow) {
1711 char a[10];
1712 char b[] = "def";
1713 strcpy(a, "abc");
1714 __msan_poison(b + 1, 1);
1715 strncat(a, b, 2);
1716 EXPECT_NOT_POISONED(a[3]);
1717 EXPECT_POISONED(a[4]);
1718 EXPECT_NOT_POISONED(a[5]);
1719 EXPECT_POISONED(a[6]);
1720 EXPECT_POISONED(a[7]);
1721 }
1722
TEST(MemorySanitizer,wcscat)1723 TEST(MemorySanitizer, wcscat) {
1724 wchar_t a[10];
1725 wchar_t b[] = L"def";
1726 wcscpy(a, L"abc");
1727
1728 wcscat(a, b);
1729 EXPECT_EQ(6U, wcslen(a));
1730 EXPECT_POISONED(a[7]);
1731
1732 a[3] = 0;
1733 __msan_poison(b + 1, sizeof(wchar_t));
1734 EXPECT_UMR(wcscat(a, b));
1735
1736 __msan_unpoison(b + 1, sizeof(wchar_t));
1737 __msan_poison(a + 2, sizeof(wchar_t));
1738 EXPECT_UMR(wcscat(a, b));
1739 }
1740
TEST(MemorySanitizer,wcsncat)1741 TEST(MemorySanitizer, wcsncat) {
1742 wchar_t a[10];
1743 wchar_t b[] = L"def";
1744 wcscpy(a, L"abc");
1745
1746 wcsncat(a, b, 5);
1747 EXPECT_EQ(6U, wcslen(a));
1748 EXPECT_POISONED(a[7]);
1749
1750 a[3] = 0;
1751 __msan_poison(a + 4, sizeof(wchar_t) * 6);
1752 wcsncat(a, b, 2);
1753 EXPECT_EQ(5U, wcslen(a));
1754 EXPECT_POISONED(a[6]);
1755
1756 a[3] = 0;
1757 __msan_poison(b + 1, sizeof(wchar_t));
1758 EXPECT_UMR(wcsncat(a, b, 2));
1759
1760 __msan_unpoison(b + 1, sizeof(wchar_t));
1761 __msan_poison(a + 2, sizeof(wchar_t));
1762 EXPECT_UMR(wcsncat(a, b, 2));
1763 }
1764
1765 #define TEST_STRTO_INT(func_name, char_type, str_prefix) \
1766 TEST(MemorySanitizer, func_name) { \
1767 char_type *e; \
1768 EXPECT_EQ(1U, func_name(str_prefix##"1", &e, 10)); \
1769 EXPECT_NOT_POISONED((S8)e); \
1770 }
1771
1772 #define TEST_STRTO_FLOAT(func_name, char_type, str_prefix) \
1773 TEST(MemorySanitizer, func_name) { \
1774 char_type *e; \
1775 EXPECT_NE(0, func_name(str_prefix##"1.5", &e)); \
1776 EXPECT_NOT_POISONED((S8)e); \
1777 }
1778
1779 #define TEST_STRTO_FLOAT_LOC(func_name, char_type, str_prefix) \
1780 TEST(MemorySanitizer, func_name) { \
1781 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \
1782 char_type *e; \
1783 EXPECT_NE(0, func_name(str_prefix##"1.5", &e, loc)); \
1784 EXPECT_NOT_POISONED((S8)e); \
1785 freelocale(loc); \
1786 }
1787
1788 #define TEST_STRTO_INT_LOC(func_name, char_type, str_prefix) \
1789 TEST(MemorySanitizer, func_name) { \
1790 locale_t loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t)0); \
1791 char_type *e; \
1792 ASSERT_EQ(1U, func_name(str_prefix##"1", &e, 10, loc)); \
1793 EXPECT_NOT_POISONED((S8)e); \
1794 freelocale(loc); \
1795 }
1796
1797 TEST_STRTO_INT(strtol, char, )
1798 TEST_STRTO_INT(strtoll, char, )
1799 TEST_STRTO_INT(strtoul, char, )
1800 TEST_STRTO_INT(strtoull, char, )
1801 TEST_STRTO_INT(strtouq, char, )
1802
1803 TEST_STRTO_FLOAT(strtof, char, )
1804 TEST_STRTO_FLOAT(strtod, char, )
1805 TEST_STRTO_FLOAT(strtold, char, )
1806
1807 TEST_STRTO_FLOAT_LOC(strtof_l, char, )
1808 TEST_STRTO_FLOAT_LOC(strtod_l, char, )
1809 TEST_STRTO_FLOAT_LOC(strtold_l, char, )
1810
1811 TEST_STRTO_INT_LOC(strtol_l, char, )
1812 TEST_STRTO_INT_LOC(strtoll_l, char, )
1813 TEST_STRTO_INT_LOC(strtoul_l, char, )
1814 TEST_STRTO_INT_LOC(strtoull_l, char, )
1815
TEST_STRTO_INT(wcstol,wchar_t,L)1816 TEST_STRTO_INT(wcstol, wchar_t, L)
1817 TEST_STRTO_INT(wcstoll, wchar_t, L)
1818 TEST_STRTO_INT(wcstoul, wchar_t, L)
1819 TEST_STRTO_INT(wcstoull, wchar_t, L)
1820
1821 TEST_STRTO_FLOAT(wcstof, wchar_t, L)
1822 TEST_STRTO_FLOAT(wcstod, wchar_t, L)
1823 TEST_STRTO_FLOAT(wcstold, wchar_t, L)
1824
1825 TEST_STRTO_FLOAT_LOC(wcstof_l, wchar_t, L)
1826 TEST_STRTO_FLOAT_LOC(wcstod_l, wchar_t, L)
1827 TEST_STRTO_FLOAT_LOC(wcstold_l, wchar_t, L)
1828
1829 TEST_STRTO_INT_LOC(wcstol_l, wchar_t, L)
1830 TEST_STRTO_INT_LOC(wcstoll_l, wchar_t, L)
1831 TEST_STRTO_INT_LOC(wcstoul_l, wchar_t, L)
1832 TEST_STRTO_INT_LOC(wcstoull_l, wchar_t, L)
1833
1834
1835 TEST(MemorySanitizer, strtoimax) {
1836 char *e;
1837 ASSERT_EQ(1, strtoimax("1", &e, 10));
1838 EXPECT_NOT_POISONED((S8) e);
1839 }
1840
TEST(MemorySanitizer,strtoumax)1841 TEST(MemorySanitizer, strtoumax) {
1842 char *e;
1843 ASSERT_EQ(1U, strtoumax("1", &e, 10));
1844 EXPECT_NOT_POISONED((S8) e);
1845 }
1846
1847 #ifdef __GLIBC__
1848 extern "C" float __strtof_l(const char *nptr, char **endptr, locale_t loc);
1849 TEST_STRTO_FLOAT_LOC(__strtof_l, char, )
1850 extern "C" double __strtod_l(const char *nptr, char **endptr, locale_t loc);
1851 TEST_STRTO_FLOAT_LOC(__strtod_l, char, )
1852 extern "C" long double __strtold_l(const char *nptr, char **endptr,
1853 locale_t loc);
1854 TEST_STRTO_FLOAT_LOC(__strtold_l, char, )
1855
1856 extern "C" float __wcstof_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc);
1857 TEST_STRTO_FLOAT_LOC(__wcstof_l, wchar_t, L)
1858 extern "C" double __wcstod_l(const wchar_t *nptr, wchar_t **endptr, locale_t loc);
1859 TEST_STRTO_FLOAT_LOC(__wcstod_l, wchar_t, L)
1860 extern "C" long double __wcstold_l(const wchar_t *nptr, wchar_t **endptr,
1861 locale_t loc);
TEST_STRTO_FLOAT_LOC(__wcstold_l,wchar_t,L)1862 TEST_STRTO_FLOAT_LOC(__wcstold_l, wchar_t, L)
1863 #endif // __GLIBC__
1864
1865 TEST(MemorySanitizer, modf) {
1866 double x, y;
1867 x = modf(2.1, &y);
1868 EXPECT_NOT_POISONED(y);
1869 }
1870
TEST(MemorySanitizer,modff)1871 TEST(MemorySanitizer, modff) {
1872 float x, y;
1873 x = modff(2.1, &y);
1874 EXPECT_NOT_POISONED(y);
1875 }
1876
TEST(MemorySanitizer,modfl)1877 TEST(MemorySanitizer, modfl) {
1878 long double x, y;
1879 x = modfl(2.1, &y);
1880 EXPECT_NOT_POISONED(y);
1881 }
1882
1883 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,sincos)1884 TEST(MemorySanitizer, sincos) {
1885 double s, c;
1886 sincos(0.2, &s, &c);
1887 EXPECT_NOT_POISONED(s);
1888 EXPECT_NOT_POISONED(c);
1889 }
1890 #endif
1891
1892 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,sincosf)1893 TEST(MemorySanitizer, sincosf) {
1894 float s, c;
1895 sincosf(0.2, &s, &c);
1896 EXPECT_NOT_POISONED(s);
1897 EXPECT_NOT_POISONED(c);
1898 }
1899 #endif
1900
1901 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,sincosl)1902 TEST(MemorySanitizer, sincosl) {
1903 long double s, c;
1904 sincosl(0.2, &s, &c);
1905 EXPECT_NOT_POISONED(s);
1906 EXPECT_NOT_POISONED(c);
1907 }
1908 #endif
1909
TEST(MemorySanitizer,remquo)1910 TEST(MemorySanitizer, remquo) {
1911 int quo;
1912 double res = remquo(29.0, 3.0, &quo);
1913 ASSERT_NE(0.0, res);
1914 EXPECT_NOT_POISONED(quo);
1915 }
1916
TEST(MemorySanitizer,remquof)1917 TEST(MemorySanitizer, remquof) {
1918 int quo;
1919 float res = remquof(29.0, 3.0, &quo);
1920 ASSERT_NE(0.0, res);
1921 EXPECT_NOT_POISONED(quo);
1922 }
1923
1924 #if !defined(__NetBSD__)
TEST(MemorySanitizer,remquol)1925 TEST(MemorySanitizer, remquol) {
1926 int quo;
1927 long double res = remquof(29.0, 3.0, &quo);
1928 ASSERT_NE(0.0, res);
1929 EXPECT_NOT_POISONED(quo);
1930 }
1931 #endif
1932
TEST(MemorySanitizer,lgamma)1933 TEST(MemorySanitizer, lgamma) {
1934 double res = lgamma(1.1);
1935 ASSERT_NE(0.0, res);
1936 EXPECT_NOT_POISONED(signgam);
1937 }
1938
TEST(MemorySanitizer,lgammaf)1939 TEST(MemorySanitizer, lgammaf) {
1940 float res = lgammaf(1.1);
1941 ASSERT_NE(0.0, res);
1942 EXPECT_NOT_POISONED(signgam);
1943 }
1944
1945 #if !defined(__NetBSD__)
TEST(MemorySanitizer,lgammal)1946 TEST(MemorySanitizer, lgammal) {
1947 long double res = lgammal(1.1);
1948 ASSERT_NE(0.0, res);
1949 EXPECT_NOT_POISONED(signgam);
1950 }
1951 #endif
1952
TEST(MemorySanitizer,lgamma_r)1953 TEST(MemorySanitizer, lgamma_r) {
1954 int sgn;
1955 double res = lgamma_r(1.1, &sgn);
1956 ASSERT_NE(0.0, res);
1957 EXPECT_NOT_POISONED(sgn);
1958 }
1959
TEST(MemorySanitizer,lgammaf_r)1960 TEST(MemorySanitizer, lgammaf_r) {
1961 int sgn;
1962 float res = lgammaf_r(1.1, &sgn);
1963 ASSERT_NE(0.0, res);
1964 EXPECT_NOT_POISONED(sgn);
1965 }
1966
1967 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,lgammal_r)1968 TEST(MemorySanitizer, lgammal_r) {
1969 int sgn;
1970 long double res = lgammal_r(1.1, &sgn);
1971 ASSERT_NE(0.0, res);
1972 EXPECT_NOT_POISONED(sgn);
1973 }
1974 #endif
1975
1976 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,drand48_r)1977 TEST(MemorySanitizer, drand48_r) {
1978 struct drand48_data buf;
1979 srand48_r(0, &buf);
1980 double d;
1981 drand48_r(&buf, &d);
1982 EXPECT_NOT_POISONED(d);
1983 }
1984 #endif
1985
1986 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,lrand48_r)1987 TEST(MemorySanitizer, lrand48_r) {
1988 struct drand48_data buf;
1989 srand48_r(0, &buf);
1990 long d;
1991 lrand48_r(&buf, &d);
1992 EXPECT_NOT_POISONED(d);
1993 }
1994 #endif
1995
TEST(MemorySanitizer,sprintf)1996 TEST(MemorySanitizer, sprintf) {
1997 char buff[10];
1998 break_optimization(buff);
1999 EXPECT_POISONED(buff[0]);
2000 int res = sprintf(buff, "%d", 1234567);
2001 ASSERT_EQ(res, 7);
2002 ASSERT_EQ(buff[0], '1');
2003 ASSERT_EQ(buff[1], '2');
2004 ASSERT_EQ(buff[2], '3');
2005 ASSERT_EQ(buff[6], '7');
2006 ASSERT_EQ(buff[7], 0);
2007 EXPECT_POISONED(buff[8]);
2008 }
2009
TEST(MemorySanitizer,snprintf)2010 TEST(MemorySanitizer, snprintf) {
2011 char buff[10];
2012 break_optimization(buff);
2013 EXPECT_POISONED(buff[0]);
2014 int res = snprintf(buff, sizeof(buff), "%d", 1234567);
2015 ASSERT_EQ(res, 7);
2016 ASSERT_EQ(buff[0], '1');
2017 ASSERT_EQ(buff[1], '2');
2018 ASSERT_EQ(buff[2], '3');
2019 ASSERT_EQ(buff[6], '7');
2020 ASSERT_EQ(buff[7], 0);
2021 EXPECT_POISONED(buff[8]);
2022 }
2023
TEST(MemorySanitizer,swprintf)2024 TEST(MemorySanitizer, swprintf) {
2025 wchar_t buff[10];
2026 ASSERT_EQ(4U, sizeof(wchar_t));
2027 break_optimization(buff);
2028 EXPECT_POISONED(buff[0]);
2029 int res = swprintf(buff, 9, L"%d", 1234567);
2030 ASSERT_EQ(res, 7);
2031 ASSERT_EQ(buff[0], '1');
2032 ASSERT_EQ(buff[1], '2');
2033 ASSERT_EQ(buff[2], '3');
2034 ASSERT_EQ(buff[6], '7');
2035 ASSERT_EQ(buff[7], L'\0');
2036 EXPECT_POISONED(buff[8]);
2037 }
2038
TEST(MemorySanitizer,asprintf)2039 TEST(MemorySanitizer, asprintf) {
2040 char *pbuf;
2041 EXPECT_POISONED(pbuf);
2042 int res = asprintf(&pbuf, "%d", 1234567);
2043 ASSERT_EQ(res, 7);
2044 EXPECT_NOT_POISONED(pbuf);
2045 ASSERT_EQ(pbuf[0], '1');
2046 ASSERT_EQ(pbuf[1], '2');
2047 ASSERT_EQ(pbuf[2], '3');
2048 ASSERT_EQ(pbuf[6], '7');
2049 ASSERT_EQ(pbuf[7], 0);
2050 free(pbuf);
2051 }
2052
TEST(MemorySanitizer,mbstowcs)2053 TEST(MemorySanitizer, mbstowcs) {
2054 const char *x = "abc";
2055 wchar_t buff[10];
2056 int res = mbstowcs(buff, x, 2);
2057 EXPECT_EQ(2, res);
2058 EXPECT_EQ(L'a', buff[0]);
2059 EXPECT_EQ(L'b', buff[1]);
2060 EXPECT_POISONED(buff[2]);
2061 res = mbstowcs(buff, x, 10);
2062 EXPECT_EQ(3, res);
2063 EXPECT_NOT_POISONED(buff[3]);
2064 }
2065
TEST(MemorySanitizer,wcstombs)2066 TEST(MemorySanitizer, wcstombs) {
2067 const wchar_t *x = L"abc";
2068 char buff[10];
2069 int res = wcstombs(buff, x, 4);
2070 EXPECT_EQ(res, 3);
2071 EXPECT_EQ(buff[0], 'a');
2072 EXPECT_EQ(buff[1], 'b');
2073 EXPECT_EQ(buff[2], 'c');
2074 }
2075
TEST(MemorySanitizer,wcsrtombs)2076 TEST(MemorySanitizer, wcsrtombs) {
2077 const wchar_t *x = L"abc";
2078 const wchar_t *p = x;
2079 char buff[10];
2080 mbstate_t mbs;
2081 memset(&mbs, 0, sizeof(mbs));
2082 int res = wcsrtombs(buff, &p, 4, &mbs);
2083 EXPECT_EQ(res, 3);
2084 EXPECT_EQ(buff[0], 'a');
2085 EXPECT_EQ(buff[1], 'b');
2086 EXPECT_EQ(buff[2], 'c');
2087 EXPECT_EQ(buff[3], '\0');
2088 EXPECT_POISONED(buff[4]);
2089 }
2090
TEST(MemorySanitizer,wcsnrtombs)2091 TEST(MemorySanitizer, wcsnrtombs) {
2092 const wchar_t *x = L"abc";
2093 const wchar_t *p = x;
2094 char buff[10];
2095 mbstate_t mbs;
2096 memset(&mbs, 0, sizeof(mbs));
2097 int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
2098 EXPECT_EQ(res, 2);
2099 EXPECT_EQ(buff[0], 'a');
2100 EXPECT_EQ(buff[1], 'b');
2101 EXPECT_POISONED(buff[2]);
2102 }
2103
TEST(MemorySanitizer,wcrtomb)2104 TEST(MemorySanitizer, wcrtomb) {
2105 wchar_t x = L'a';
2106 char buff[10];
2107 mbstate_t mbs;
2108 memset(&mbs, 0, sizeof(mbs));
2109 size_t res = wcrtomb(buff, x, &mbs);
2110 EXPECT_EQ(res, (size_t)1);
2111 EXPECT_EQ(buff[0], 'a');
2112 }
2113
TEST(MemorySanitizer,wctomb)2114 TEST(MemorySanitizer, wctomb) {
2115 wchar_t x = L'a';
2116 char buff[10];
2117 wctomb(nullptr, x);
2118 int res = wctomb(buff, x);
2119 EXPECT_EQ(res, 1);
2120 EXPECT_EQ(buff[0], 'a');
2121 EXPECT_POISONED(buff[1]);
2122 }
2123
TEST(MemorySanitizer,wmemset)2124 TEST(MemorySanitizer, wmemset) {
2125 wchar_t x[25];
2126 break_optimization(x);
2127 EXPECT_POISONED(x[0]);
2128 wmemset(x, L'A', 10);
2129 EXPECT_EQ(x[0], L'A');
2130 EXPECT_EQ(x[9], L'A');
2131 EXPECT_POISONED(x[10]);
2132 }
2133
TEST(MemorySanitizer,mbtowc)2134 TEST(MemorySanitizer, mbtowc) {
2135 const char *x = "abc";
2136 wchar_t wx;
2137 int res = mbtowc(&wx, x, 3);
2138 EXPECT_GT(res, 0);
2139 EXPECT_NOT_POISONED(wx);
2140 }
2141
TEST(MemorySanitizer,mbrtowc)2142 TEST(MemorySanitizer, mbrtowc) {
2143 mbstate_t mbs = {};
2144
2145 wchar_t wc;
2146 size_t res = mbrtowc(&wc, "\377", 1, &mbs);
2147 EXPECT_EQ(res, -1ULL);
2148
2149 res = mbrtowc(&wc, "abc", 3, &mbs);
2150 EXPECT_GT(res, 0ULL);
2151 EXPECT_NOT_POISONED(wc);
2152 }
2153
TEST(MemorySanitizer,wcsftime)2154 TEST(MemorySanitizer, wcsftime) {
2155 wchar_t x[100];
2156 time_t t = time(NULL);
2157 struct tm tms;
2158 struct tm *tmres = localtime_r(&t, &tms);
2159 ASSERT_NE((void *)0, tmres);
2160 size_t res = wcsftime(x, sizeof(x) / sizeof(x[0]), L"%Y-%m-%d", tmres);
2161 EXPECT_GT(res, 0UL);
2162 EXPECT_EQ(res, wcslen(x));
2163 }
2164
TEST(MemorySanitizer,gettimeofday)2165 TEST(MemorySanitizer, gettimeofday) {
2166 struct timeval tv;
2167 struct timezone tz;
2168 break_optimization(&tv);
2169 break_optimization(&tz);
2170 ASSERT_EQ(16U, sizeof(tv));
2171 ASSERT_EQ(8U, sizeof(tz));
2172 EXPECT_POISONED(tv.tv_sec);
2173 EXPECT_POISONED(tv.tv_usec);
2174 EXPECT_POISONED(tz.tz_minuteswest);
2175 EXPECT_POISONED(tz.tz_dsttime);
2176 ASSERT_EQ(0, gettimeofday(&tv, &tz));
2177 EXPECT_NOT_POISONED(tv.tv_sec);
2178 EXPECT_NOT_POISONED(tv.tv_usec);
2179 EXPECT_NOT_POISONED(tz.tz_minuteswest);
2180 EXPECT_NOT_POISONED(tz.tz_dsttime);
2181 }
2182
TEST(MemorySanitizer,clock_gettime)2183 TEST(MemorySanitizer, clock_gettime) {
2184 struct timespec tp;
2185 EXPECT_POISONED(tp.tv_sec);
2186 EXPECT_POISONED(tp.tv_nsec);
2187 ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &tp));
2188 EXPECT_NOT_POISONED(tp.tv_sec);
2189 EXPECT_NOT_POISONED(tp.tv_nsec);
2190 }
2191
TEST(MemorySanitizer,clock_getres)2192 TEST(MemorySanitizer, clock_getres) {
2193 struct timespec tp;
2194 EXPECT_POISONED(tp.tv_sec);
2195 EXPECT_POISONED(tp.tv_nsec);
2196 ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, 0));
2197 EXPECT_POISONED(tp.tv_sec);
2198 EXPECT_POISONED(tp.tv_nsec);
2199 ASSERT_EQ(0, clock_getres(CLOCK_REALTIME, &tp));
2200 EXPECT_NOT_POISONED(tp.tv_sec);
2201 EXPECT_NOT_POISONED(tp.tv_nsec);
2202 }
2203
TEST(MemorySanitizer,getitimer)2204 TEST(MemorySanitizer, getitimer) {
2205 struct itimerval it1, it2;
2206 int res;
2207 EXPECT_POISONED(it1.it_interval.tv_sec);
2208 EXPECT_POISONED(it1.it_interval.tv_usec);
2209 EXPECT_POISONED(it1.it_value.tv_sec);
2210 EXPECT_POISONED(it1.it_value.tv_usec);
2211 res = getitimer(ITIMER_VIRTUAL, &it1);
2212 ASSERT_EQ(0, res);
2213 EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
2214 EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
2215 EXPECT_NOT_POISONED(it1.it_value.tv_sec);
2216 EXPECT_NOT_POISONED(it1.it_value.tv_usec);
2217
2218 it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
2219 it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
2220
2221 res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
2222 ASSERT_EQ(0, res);
2223 EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
2224 EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
2225 EXPECT_NOT_POISONED(it2.it_value.tv_sec);
2226 EXPECT_NOT_POISONED(it2.it_value.tv_usec);
2227
2228 // Check that old_value can be 0, and disable the timer.
2229 memset(&it1, 0, sizeof(it1));
2230 res = setitimer(ITIMER_VIRTUAL, &it1, 0);
2231 ASSERT_EQ(0, res);
2232 }
2233
TEST(MemorySanitizer,setitimer_null)2234 TEST(MemorySanitizer, setitimer_null) {
2235 setitimer(ITIMER_VIRTUAL, 0, 0);
2236 // Not testing the return value, since it the behaviour seems to differ
2237 // between libc implementations and POSIX.
2238 // Should never crash, though.
2239 }
2240
TEST(MemorySanitizer,time)2241 TEST(MemorySanitizer, time) {
2242 time_t t;
2243 EXPECT_POISONED(t);
2244 time_t t2 = time(&t);
2245 ASSERT_NE(t2, (time_t)-1);
2246 EXPECT_NOT_POISONED(t);
2247 }
2248
TEST(MemorySanitizer,strptime)2249 TEST(MemorySanitizer, strptime) {
2250 struct tm time;
2251 char *p = strptime("11/1/2013-05:39", "%m/%d/%Y-%H:%M", &time);
2252 ASSERT_TRUE(p != NULL);
2253 EXPECT_NOT_POISONED(time.tm_sec);
2254 EXPECT_NOT_POISONED(time.tm_hour);
2255 EXPECT_NOT_POISONED(time.tm_year);
2256 }
2257
TEST(MemorySanitizer,localtime)2258 TEST(MemorySanitizer, localtime) {
2259 time_t t = 123;
2260 struct tm *time = localtime(&t);
2261 ASSERT_TRUE(time != NULL);
2262 EXPECT_NOT_POISONED(time->tm_sec);
2263 EXPECT_NOT_POISONED(time->tm_hour);
2264 EXPECT_NOT_POISONED(time->tm_year);
2265 EXPECT_NOT_POISONED(time->tm_isdst);
2266 EXPECT_NE(0U, strlen(time->tm_zone));
2267 }
2268
TEST(MemorySanitizer,localtime_r)2269 TEST(MemorySanitizer, localtime_r) {
2270 time_t t = 123;
2271 struct tm time;
2272 struct tm *res = localtime_r(&t, &time);
2273 ASSERT_TRUE(res != NULL);
2274 EXPECT_NOT_POISONED(time.tm_sec);
2275 EXPECT_NOT_POISONED(time.tm_hour);
2276 EXPECT_NOT_POISONED(time.tm_year);
2277 EXPECT_NOT_POISONED(time.tm_isdst);
2278 EXPECT_NE(0U, strlen(time.tm_zone));
2279 }
2280
2281 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
2282 /* Creates a temporary file with contents similar to /etc/fstab to be used
2283 with getmntent{_r}. */
2284 class TempFstabFile {
2285 public:
TempFstabFile()2286 TempFstabFile() : fd (-1) { }
~TempFstabFile()2287 ~TempFstabFile() {
2288 if (fd >= 0)
2289 close (fd);
2290 }
2291
Create(void)2292 bool Create(void) {
2293 snprintf(tmpfile, sizeof(tmpfile), "/tmp/msan.getmntent.tmp.XXXXXX");
2294
2295 fd = mkstemp(tmpfile);
2296 if (fd == -1)
2297 return false;
2298
2299 const char entry[] = "/dev/root / ext4 errors=remount-ro 0 1";
2300 size_t entrylen = sizeof(entry);
2301
2302 size_t bytesWritten = write(fd, entry, entrylen);
2303 if (entrylen != bytesWritten)
2304 return false;
2305
2306 return true;
2307 }
2308
FileName(void)2309 const char* FileName(void) {
2310 return tmpfile;
2311 }
2312
2313 private:
2314 char tmpfile[128];
2315 int fd;
2316 };
2317 #endif
2318
2319 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,getmntent)2320 TEST(MemorySanitizer, getmntent) {
2321 TempFstabFile fstabtmp;
2322 ASSERT_TRUE(fstabtmp.Create());
2323 FILE *fp = setmntent(fstabtmp.FileName(), "r");
2324
2325 struct mntent *mnt = getmntent(fp);
2326 ASSERT_TRUE(mnt != NULL);
2327 ASSERT_NE(0U, strlen(mnt->mnt_fsname));
2328 ASSERT_NE(0U, strlen(mnt->mnt_dir));
2329 ASSERT_NE(0U, strlen(mnt->mnt_type));
2330 ASSERT_NE(0U, strlen(mnt->mnt_opts));
2331 EXPECT_NOT_POISONED(mnt->mnt_freq);
2332 EXPECT_NOT_POISONED(mnt->mnt_passno);
2333 fclose(fp);
2334 }
2335 #endif
2336
2337 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,getmntent_r)2338 TEST(MemorySanitizer, getmntent_r) {
2339 TempFstabFile fstabtmp;
2340 ASSERT_TRUE(fstabtmp.Create());
2341 FILE *fp = setmntent(fstabtmp.FileName(), "r");
2342
2343 struct mntent mntbuf;
2344 char buf[1000];
2345 struct mntent *mnt = getmntent_r(fp, &mntbuf, buf, sizeof(buf));
2346 ASSERT_TRUE(mnt != NULL);
2347 ASSERT_NE(0U, strlen(mnt->mnt_fsname));
2348 ASSERT_NE(0U, strlen(mnt->mnt_dir));
2349 ASSERT_NE(0U, strlen(mnt->mnt_type));
2350 ASSERT_NE(0U, strlen(mnt->mnt_opts));
2351 EXPECT_NOT_POISONED(mnt->mnt_freq);
2352 EXPECT_NOT_POISONED(mnt->mnt_passno);
2353 fclose(fp);
2354 }
2355 #endif
2356
2357 #if !defined(__NetBSD__)
TEST(MemorySanitizer,ether)2358 TEST(MemorySanitizer, ether) {
2359 const char *asc = "11:22:33:44:55:66";
2360 struct ether_addr *paddr = ether_aton(asc);
2361 EXPECT_NOT_POISONED(*paddr);
2362
2363 struct ether_addr addr;
2364 paddr = ether_aton_r(asc, &addr);
2365 ASSERT_EQ(paddr, &addr);
2366 EXPECT_NOT_POISONED(addr);
2367
2368 char *s = ether_ntoa(&addr);
2369 ASSERT_NE(0U, strlen(s));
2370
2371 char buf[100];
2372 s = ether_ntoa_r(&addr, buf);
2373 ASSERT_EQ(s, buf);
2374 ASSERT_NE(0U, strlen(buf));
2375 }
2376 #endif
2377
TEST(MemorySanitizer,mmap)2378 TEST(MemorySanitizer, mmap) {
2379 const int size = 4096;
2380 void *p1, *p2;
2381 p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
2382 __msan_poison(p1, size);
2383 munmap(p1, size);
2384 for (int i = 0; i < 1000; i++) {
2385 p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
2386 if (p2 == p1)
2387 break;
2388 else
2389 munmap(p2, size);
2390 }
2391 if (p1 == p2) {
2392 EXPECT_NOT_POISONED(*(char*)p2);
2393 munmap(p2, size);
2394 }
2395 }
2396
2397 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
2398 // FIXME: enable and add ecvt.
2399 // FIXME: check why msandr does nt handle fcvt.
TEST(MemorySanitizer,fcvt)2400 TEST(MemorySanitizer, fcvt) {
2401 int a, b;
2402 break_optimization(&a);
2403 break_optimization(&b);
2404 EXPECT_POISONED(a);
2405 EXPECT_POISONED(b);
2406 char *str = fcvt(12345.6789, 10, &a, &b);
2407 EXPECT_NOT_POISONED(a);
2408 EXPECT_NOT_POISONED(b);
2409 ASSERT_NE(nullptr, str);
2410 EXPECT_NOT_POISONED(str[0]);
2411 ASSERT_NE(0U, strlen(str));
2412 }
2413 #endif
2414
2415 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,fcvt_long)2416 TEST(MemorySanitizer, fcvt_long) {
2417 int a, b;
2418 break_optimization(&a);
2419 break_optimization(&b);
2420 EXPECT_POISONED(a);
2421 EXPECT_POISONED(b);
2422 char *str = fcvt(111111112345.6789, 10, &a, &b);
2423 EXPECT_NOT_POISONED(a);
2424 EXPECT_NOT_POISONED(b);
2425 ASSERT_NE(nullptr, str);
2426 EXPECT_NOT_POISONED(str[0]);
2427 ASSERT_NE(0U, strlen(str));
2428 }
2429 #endif
2430
TEST(MemorySanitizer,memchr)2431 TEST(MemorySanitizer, memchr) {
2432 char x[10];
2433 break_optimization(x);
2434 EXPECT_POISONED(x[0]);
2435 x[2] = '2';
2436 void *res;
2437 EXPECT_UMR(res = memchr(x, '2', 10));
2438 EXPECT_NOT_POISONED(res);
2439 x[0] = '0';
2440 x[1] = '1';
2441 res = memchr(x, '2', 10);
2442 EXPECT_EQ(&x[2], res);
2443 EXPECT_UMR(res = memchr(x, '3', 10));
2444 EXPECT_NOT_POISONED(res);
2445 }
2446
TEST(MemorySanitizer,memrchr)2447 TEST(MemorySanitizer, memrchr) {
2448 char x[10];
2449 break_optimization(x);
2450 EXPECT_POISONED(x[0]);
2451 x[9] = '9';
2452 void *res;
2453 EXPECT_UMR(res = memrchr(x, '9', 10));
2454 EXPECT_NOT_POISONED(res);
2455 x[0] = '0';
2456 x[1] = '1';
2457 res = memrchr(x, '0', 2);
2458 EXPECT_EQ(&x[0], res);
2459 EXPECT_UMR(res = memrchr(x, '7', 10));
2460 EXPECT_NOT_POISONED(res);
2461 }
2462
TEST(MemorySanitizer,frexp)2463 TEST(MemorySanitizer, frexp) {
2464 int x;
2465 x = *GetPoisoned<int>();
2466 double r = frexp(1.1, &x);
2467 EXPECT_NOT_POISONED(r);
2468 EXPECT_NOT_POISONED(x);
2469
2470 x = *GetPoisoned<int>();
2471 float rf = frexpf(1.1, &x);
2472 EXPECT_NOT_POISONED(rf);
2473 EXPECT_NOT_POISONED(x);
2474
2475 x = *GetPoisoned<int>();
2476 double rl = frexpl(1.1, &x);
2477 EXPECT_NOT_POISONED(rl);
2478 EXPECT_NOT_POISONED(x);
2479 }
2480
2481 namespace {
2482
2483 static int cnt;
2484
SigactionHandler(int signo,siginfo_t * si,void * uc)2485 void SigactionHandler(int signo, siginfo_t* si, void* uc) {
2486 ASSERT_EQ(signo, SIGPROF);
2487 ASSERT_TRUE(si != NULL);
2488 EXPECT_NOT_POISONED(si->si_errno);
2489 EXPECT_NOT_POISONED(si->si_pid);
2490 #ifdef _UC_MACHINE_PC
2491 EXPECT_NOT_POISONED(_UC_MACHINE_PC((ucontext_t*)uc));
2492 #else
2493 # if __linux__
2494 # if defined(__x86_64__)
2495 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
2496 # elif defined(__i386__)
2497 EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
2498 # endif
2499 # endif
2500 #endif
2501 ++cnt;
2502 }
2503
TEST(MemorySanitizer,sigaction)2504 TEST(MemorySanitizer, sigaction) {
2505 struct sigaction act = {};
2506 struct sigaction oldact = {};
2507 struct sigaction origact = {};
2508
2509 sigaction(SIGPROF, 0, &origact);
2510
2511 act.sa_flags |= SA_SIGINFO;
2512 act.sa_sigaction = &SigactionHandler;
2513 sigaction(SIGPROF, &act, 0);
2514
2515 kill(getpid(), SIGPROF);
2516
2517 act.sa_flags &= ~SA_SIGINFO;
2518 act.sa_handler = SIG_DFL;
2519 sigaction(SIGPROF, &act, 0);
2520
2521 act.sa_flags &= ~SA_SIGINFO;
2522 act.sa_handler = SIG_IGN;
2523 sigaction(SIGPROF, &act, &oldact);
2524 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
2525 EXPECT_EQ(SIG_DFL, oldact.sa_handler);
2526 kill(getpid(), SIGPROF);
2527
2528 act.sa_flags |= SA_SIGINFO;
2529 act.sa_sigaction = &SigactionHandler;
2530 sigaction(SIGPROF, &act, &oldact);
2531 EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
2532 EXPECT_EQ(SIG_IGN, oldact.sa_handler);
2533 kill(getpid(), SIGPROF);
2534
2535 act.sa_flags &= ~SA_SIGINFO;
2536 act.sa_handler = SIG_DFL;
2537 sigaction(SIGPROF, &act, &oldact);
2538 EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
2539 EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
2540 EXPECT_EQ(2, cnt);
2541
2542 sigaction(SIGPROF, &origact, 0);
2543 }
2544
2545 } // namespace
2546
2547
TEST(MemorySanitizer,sigemptyset)2548 TEST(MemorySanitizer, sigemptyset) {
2549 sigset_t s;
2550 EXPECT_POISONED(s);
2551 int res = sigemptyset(&s);
2552 ASSERT_EQ(0, res);
2553 EXPECT_NOT_POISONED(s);
2554 }
2555
TEST(MemorySanitizer,sigfillset)2556 TEST(MemorySanitizer, sigfillset) {
2557 sigset_t s;
2558 EXPECT_POISONED(s);
2559 int res = sigfillset(&s);
2560 ASSERT_EQ(0, res);
2561 EXPECT_NOT_POISONED(s);
2562 }
2563
TEST(MemorySanitizer,sigpending)2564 TEST(MemorySanitizer, sigpending) {
2565 sigset_t s;
2566 EXPECT_POISONED(s);
2567 int res = sigpending(&s);
2568 ASSERT_EQ(0, res);
2569 EXPECT_NOT_POISONED(s);
2570 }
2571
TEST(MemorySanitizer,sigprocmask)2572 TEST(MemorySanitizer, sigprocmask) {
2573 sigset_t s;
2574 EXPECT_POISONED(s);
2575 int res = sigprocmask(SIG_BLOCK, 0, &s);
2576 ASSERT_EQ(0, res);
2577 EXPECT_NOT_POISONED(s);
2578 }
2579
TEST(MemorySanitizer,pthread_sigmask)2580 TEST(MemorySanitizer, pthread_sigmask) {
2581 sigset_t s;
2582 EXPECT_POISONED(s);
2583 int res = pthread_sigmask(SIG_BLOCK, 0, &s);
2584 ASSERT_EQ(0, res);
2585 EXPECT_NOT_POISONED(s);
2586 }
2587
2588 struct StructWithDtor {
2589 ~StructWithDtor();
2590 };
2591
~StructWithDtor()2592 NOINLINE StructWithDtor::~StructWithDtor() {
2593 break_optimization(0);
2594 }
2595
TEST(MemorySanitizer,Invoke)2596 TEST(MemorySanitizer, Invoke) {
2597 StructWithDtor s; // Will cause the calls to become invokes.
2598 EXPECT_NOT_POISONED(0);
2599 EXPECT_POISONED(*GetPoisoned<int>());
2600 EXPECT_NOT_POISONED(0);
2601 EXPECT_POISONED(*GetPoisoned<int>());
2602 EXPECT_POISONED(ReturnPoisoned<S4>());
2603 }
2604
TEST(MemorySanitizer,ptrtoint)2605 TEST(MemorySanitizer, ptrtoint) {
2606 // Test that shadow is propagated through pointer-to-integer conversion.
2607 unsigned char c = 0;
2608 __msan_poison(&c, 1);
2609 uintptr_t u = (uintptr_t)c << 8;
2610 EXPECT_NOT_POISONED(u & 0xFF00FF);
2611 EXPECT_POISONED(u & 0xFF00);
2612
2613 break_optimization(&u);
2614 void* p = (void*)u;
2615
2616 break_optimization(&p);
2617 EXPECT_POISONED(p);
2618 EXPECT_NOT_POISONED(((uintptr_t)p) & 0xFF00FF);
2619 EXPECT_POISONED(((uintptr_t)p) & 0xFF00);
2620 }
2621
vaargsfn2(int guard,...)2622 static void vaargsfn2(int guard, ...) {
2623 va_list vl;
2624 va_start(vl, guard);
2625 EXPECT_NOT_POISONED(va_arg(vl, int));
2626 EXPECT_NOT_POISONED(va_arg(vl, int));
2627 EXPECT_NOT_POISONED(va_arg(vl, int));
2628 EXPECT_POISONED(va_arg(vl, double));
2629 va_end(vl);
2630 }
2631
vaargsfn(int guard,...)2632 static void vaargsfn(int guard, ...) {
2633 va_list vl;
2634 va_start(vl, guard);
2635 EXPECT_NOT_POISONED(va_arg(vl, int));
2636 EXPECT_POISONED(va_arg(vl, int));
2637 // The following call will overwrite __msan_param_tls.
2638 // Checks after it test that arg shadow was somehow saved across the call.
2639 vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
2640 EXPECT_NOT_POISONED(va_arg(vl, int));
2641 EXPECT_POISONED(va_arg(vl, int));
2642 va_end(vl);
2643 }
2644
TEST(MemorySanitizer,VAArgTest)2645 TEST(MemorySanitizer, VAArgTest) {
2646 int* x = GetPoisoned<int>();
2647 int* y = GetPoisoned<int>(4);
2648 vaargsfn(1, 13, *x, 42, *y);
2649 }
2650
vaargsfn_many(int guard,...)2651 static void vaargsfn_many(int guard, ...) {
2652 va_list vl;
2653 va_start(vl, guard);
2654 EXPECT_NOT_POISONED(va_arg(vl, int));
2655 EXPECT_POISONED(va_arg(vl, int));
2656 EXPECT_NOT_POISONED(va_arg(vl, int));
2657 EXPECT_NOT_POISONED(va_arg(vl, int));
2658 EXPECT_NOT_POISONED(va_arg(vl, int));
2659 EXPECT_NOT_POISONED(va_arg(vl, int));
2660 EXPECT_NOT_POISONED(va_arg(vl, int));
2661 EXPECT_NOT_POISONED(va_arg(vl, int));
2662 EXPECT_NOT_POISONED(va_arg(vl, int));
2663 EXPECT_POISONED(va_arg(vl, int));
2664 va_end(vl);
2665 }
2666
TEST(MemorySanitizer,VAArgManyTest)2667 TEST(MemorySanitizer, VAArgManyTest) {
2668 int* x = GetPoisoned<int>();
2669 int* y = GetPoisoned<int>(4);
2670 vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
2671 }
2672
vaargsfn_manyfix(int g1,int g2,int g3,int g4,int g5,int g6,int g7,int g8,int g9,...)2673 static void vaargsfn_manyfix(int g1, int g2, int g3, int g4, int g5, int g6, int g7, int g8, int g9, ...) {
2674 va_list vl;
2675 va_start(vl, g9);
2676 EXPECT_NOT_POISONED(va_arg(vl, int));
2677 EXPECT_POISONED(va_arg(vl, int));
2678 va_end(vl);
2679 }
2680
TEST(MemorySanitizer,VAArgManyFixTest)2681 TEST(MemorySanitizer, VAArgManyFixTest) {
2682 int* x = GetPoisoned<int>();
2683 int* y = GetPoisoned<int>();
2684 vaargsfn_manyfix(1, *x, 3, 4, 5, 6, 7, 8, 9, 10, *y);
2685 }
2686
vaargsfn_pass2(va_list vl)2687 static void vaargsfn_pass2(va_list vl) {
2688 EXPECT_NOT_POISONED(va_arg(vl, int));
2689 EXPECT_NOT_POISONED(va_arg(vl, int));
2690 EXPECT_POISONED(va_arg(vl, int));
2691 }
2692
vaargsfn_pass(int guard,...)2693 static void vaargsfn_pass(int guard, ...) {
2694 va_list vl;
2695 va_start(vl, guard);
2696 EXPECT_POISONED(va_arg(vl, int));
2697 vaargsfn_pass2(vl);
2698 va_end(vl);
2699 }
2700
TEST(MemorySanitizer,VAArgPass)2701 TEST(MemorySanitizer, VAArgPass) {
2702 int* x = GetPoisoned<int>();
2703 int* y = GetPoisoned<int>(4);
2704 vaargsfn_pass(1, *x, 2, 3, *y);
2705 }
2706
vaargsfn_copy2(va_list vl)2707 static void vaargsfn_copy2(va_list vl) {
2708 EXPECT_NOT_POISONED(va_arg(vl, int));
2709 EXPECT_POISONED(va_arg(vl, int));
2710 }
2711
vaargsfn_copy(int guard,...)2712 static void vaargsfn_copy(int guard, ...) {
2713 va_list vl;
2714 va_start(vl, guard);
2715 EXPECT_NOT_POISONED(va_arg(vl, int));
2716 EXPECT_POISONED(va_arg(vl, int));
2717 va_list vl2;
2718 va_copy(vl2, vl);
2719 vaargsfn_copy2(vl2);
2720 EXPECT_NOT_POISONED(va_arg(vl, int));
2721 EXPECT_POISONED(va_arg(vl, int));
2722 va_end(vl);
2723 }
2724
TEST(MemorySanitizer,VAArgCopy)2725 TEST(MemorySanitizer, VAArgCopy) {
2726 int* x = GetPoisoned<int>();
2727 int* y = GetPoisoned<int>(4);
2728 vaargsfn_copy(1, 2, *x, 3, *y);
2729 }
2730
vaargsfn_ptr(int guard,...)2731 static void vaargsfn_ptr(int guard, ...) {
2732 va_list vl;
2733 va_start(vl, guard);
2734 EXPECT_NOT_POISONED(va_arg(vl, int*));
2735 EXPECT_POISONED(va_arg(vl, int*));
2736 EXPECT_NOT_POISONED(va_arg(vl, int*));
2737 EXPECT_POISONED(va_arg(vl, double*));
2738 va_end(vl);
2739 }
2740
TEST(MemorySanitizer,VAArgPtr)2741 TEST(MemorySanitizer, VAArgPtr) {
2742 int** x = GetPoisoned<int*>();
2743 double** y = GetPoisoned<double*>(8);
2744 int z;
2745 vaargsfn_ptr(1, &z, *x, &z, *y);
2746 }
2747
vaargsfn_overflow(int guard,...)2748 static void vaargsfn_overflow(int guard, ...) {
2749 va_list vl;
2750 va_start(vl, guard);
2751 EXPECT_NOT_POISONED(va_arg(vl, int));
2752 EXPECT_NOT_POISONED(va_arg(vl, int));
2753 EXPECT_POISONED(va_arg(vl, int));
2754 EXPECT_NOT_POISONED(va_arg(vl, int));
2755 EXPECT_NOT_POISONED(va_arg(vl, int));
2756 EXPECT_NOT_POISONED(va_arg(vl, int));
2757
2758 EXPECT_NOT_POISONED(va_arg(vl, double));
2759 EXPECT_NOT_POISONED(va_arg(vl, double));
2760 EXPECT_NOT_POISONED(va_arg(vl, double));
2761 EXPECT_POISONED(va_arg(vl, double));
2762 EXPECT_NOT_POISONED(va_arg(vl, double));
2763 EXPECT_POISONED(va_arg(vl, int*));
2764 EXPECT_NOT_POISONED(va_arg(vl, double));
2765 EXPECT_NOT_POISONED(va_arg(vl, double));
2766
2767 EXPECT_POISONED(va_arg(vl, int));
2768 EXPECT_POISONED(va_arg(vl, double));
2769 EXPECT_POISONED(va_arg(vl, int*));
2770
2771 EXPECT_NOT_POISONED(va_arg(vl, int));
2772 EXPECT_NOT_POISONED(va_arg(vl, double));
2773 EXPECT_NOT_POISONED(va_arg(vl, int*));
2774
2775 EXPECT_POISONED(va_arg(vl, int));
2776 EXPECT_POISONED(va_arg(vl, double));
2777 EXPECT_POISONED(va_arg(vl, int*));
2778
2779 va_end(vl);
2780 }
2781
TEST(MemorySanitizer,VAArgOverflow)2782 TEST(MemorySanitizer, VAArgOverflow) {
2783 int* x = GetPoisoned<int>();
2784 double* y = GetPoisoned<double>(8);
2785 int** p = GetPoisoned<int*>(16);
2786 int z;
2787 vaargsfn_overflow(1,
2788 1, 2, *x, 4, 5, 6,
2789 1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
2790 // the following args will overflow for sure
2791 *x, *y, *p,
2792 7, 9.9, &z,
2793 *x, *y, *p);
2794 }
2795
vaargsfn_tlsoverwrite2(int guard,...)2796 static void vaargsfn_tlsoverwrite2(int guard, ...) {
2797 va_list vl;
2798 va_start(vl, guard);
2799 for (int i = 0; i < 20; ++i)
2800 EXPECT_NOT_POISONED(va_arg(vl, int));
2801 va_end(vl);
2802 }
2803
vaargsfn_tlsoverwrite(int guard,...)2804 static void vaargsfn_tlsoverwrite(int guard, ...) {
2805 // This call will overwrite TLS contents unless it's backed up somewhere.
2806 vaargsfn_tlsoverwrite2(2,
2807 42, 42, 42, 42, 42,
2808 42, 42, 42, 42, 42,
2809 42, 42, 42, 42, 42,
2810 42, 42, 42, 42, 42); // 20x
2811 va_list vl;
2812 va_start(vl, guard);
2813 for (int i = 0; i < 20; ++i)
2814 EXPECT_POISONED(va_arg(vl, int));
2815 va_end(vl);
2816 }
2817
TEST(MemorySanitizer,VAArgTLSOverwrite)2818 TEST(MemorySanitizer, VAArgTLSOverwrite) {
2819 int* x = GetPoisoned<int>();
2820 vaargsfn_tlsoverwrite(1,
2821 *x, *x, *x, *x, *x,
2822 *x, *x, *x, *x, *x,
2823 *x, *x, *x, *x, *x,
2824 *x, *x, *x, *x, *x); // 20x
2825
2826 }
2827
2828 struct StructByVal {
2829 int a, b, c, d, e, f;
2830 };
2831
vaargsfn_structbyval(int guard,...)2832 static void vaargsfn_structbyval(int guard, ...) {
2833 va_list vl;
2834 va_start(vl, guard);
2835 {
2836 StructByVal s = va_arg(vl, StructByVal);
2837 EXPECT_NOT_POISONED(s.a);
2838 EXPECT_POISONED(s.b);
2839 EXPECT_NOT_POISONED(s.c);
2840 EXPECT_POISONED(s.d);
2841 EXPECT_NOT_POISONED(s.e);
2842 EXPECT_POISONED(s.f);
2843 }
2844 {
2845 StructByVal s = va_arg(vl, StructByVal);
2846 EXPECT_NOT_POISONED(s.a);
2847 EXPECT_POISONED(s.b);
2848 EXPECT_NOT_POISONED(s.c);
2849 EXPECT_POISONED(s.d);
2850 EXPECT_NOT_POISONED(s.e);
2851 EXPECT_POISONED(s.f);
2852 }
2853 va_end(vl);
2854 }
2855
TEST(MemorySanitizer,VAArgStructByVal)2856 TEST(MemorySanitizer, VAArgStructByVal) {
2857 StructByVal s;
2858 s.a = 1;
2859 s.b = *GetPoisoned<int>();
2860 s.c = 2;
2861 s.d = *GetPoisoned<int>();
2862 s.e = 3;
2863 s.f = *GetPoisoned<int>();
2864 vaargsfn_structbyval(0, s, s);
2865 }
2866
StructByValTestFunc(struct StructByVal s)2867 NOINLINE void StructByValTestFunc(struct StructByVal s) {
2868 EXPECT_NOT_POISONED(s.a);
2869 EXPECT_POISONED(s.b);
2870 EXPECT_NOT_POISONED(s.c);
2871 EXPECT_POISONED(s.d);
2872 EXPECT_NOT_POISONED(s.e);
2873 EXPECT_POISONED(s.f);
2874 }
2875
StructByValTestFunc1(struct StructByVal s)2876 NOINLINE void StructByValTestFunc1(struct StructByVal s) {
2877 StructByValTestFunc(s);
2878 }
2879
StructByValTestFunc2(int z,struct StructByVal s)2880 NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
2881 StructByValTestFunc(s);
2882 }
2883
TEST(MemorySanitizer,StructByVal)2884 TEST(MemorySanitizer, StructByVal) {
2885 // Large aggregates are passed as "byval" pointer argument in LLVM.
2886 struct StructByVal s;
2887 s.a = 1;
2888 s.b = *GetPoisoned<int>();
2889 s.c = 2;
2890 s.d = *GetPoisoned<int>();
2891 s.e = 3;
2892 s.f = *GetPoisoned<int>();
2893 StructByValTestFunc(s);
2894 StructByValTestFunc1(s);
2895 StructByValTestFunc2(0, s);
2896 }
2897
2898
2899 #if MSAN_HAS_M128
m128Eq(__m128i * a,__m128i * b)2900 NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
m128Lt(__m128i * a,__m128i * b)2901 NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
TEST(MemorySanitizer,m128)2902 TEST(MemorySanitizer, m128) {
2903 __m128i a = _mm_set1_epi16(0x1234);
2904 __m128i b = _mm_set1_epi16(0x7890);
2905 EXPECT_NOT_POISONED(m128Eq(&a, &b));
2906 EXPECT_NOT_POISONED(m128Lt(&a, &b));
2907 }
2908 // FIXME: add more tests for __m128i.
2909 #endif // MSAN_HAS_M128
2910
2911 // We should not complain when copying this poisoned hole.
2912 struct StructWithHole {
2913 U4 a;
2914 // 4-byte hole.
2915 U8 b;
2916 };
2917
ReturnStructWithHole()2918 NOINLINE StructWithHole ReturnStructWithHole() {
2919 StructWithHole res;
2920 __msan_poison(&res, sizeof(res));
2921 res.a = 1;
2922 res.b = 2;
2923 return res;
2924 }
2925
TEST(MemorySanitizer,StructWithHole)2926 TEST(MemorySanitizer, StructWithHole) {
2927 StructWithHole a = ReturnStructWithHole();
2928 break_optimization(&a);
2929 }
2930
2931 template <class T>
ReturnStruct()2932 NOINLINE T ReturnStruct() {
2933 T res;
2934 __msan_poison(&res, sizeof(res));
2935 res.a = 1;
2936 return res;
2937 }
2938
2939 template <class T>
TestReturnStruct()2940 NOINLINE void TestReturnStruct() {
2941 T s1 = ReturnStruct<T>();
2942 EXPECT_NOT_POISONED(s1.a);
2943 EXPECT_POISONED(s1.b);
2944 }
2945
2946 struct SSS1 {
2947 int a, b, c;
2948 };
2949 struct SSS2 {
2950 int b, a, c;
2951 };
2952 struct SSS3 {
2953 int b, c, a;
2954 };
2955 struct SSS4 {
2956 int c, b, a;
2957 };
2958
2959 struct SSS5 {
2960 int a;
2961 float b;
2962 };
2963 struct SSS6 {
2964 int a;
2965 double b;
2966 };
2967 struct SSS7 {
2968 S8 b;
2969 int a;
2970 };
2971 struct SSS8 {
2972 S2 b;
2973 S8 a;
2974 };
2975
TEST(MemorySanitizer,IntStruct3)2976 TEST(MemorySanitizer, IntStruct3) {
2977 TestReturnStruct<SSS1>();
2978 TestReturnStruct<SSS2>();
2979 TestReturnStruct<SSS3>();
2980 TestReturnStruct<SSS4>();
2981 TestReturnStruct<SSS5>();
2982 TestReturnStruct<SSS6>();
2983 TestReturnStruct<SSS7>();
2984 TestReturnStruct<SSS8>();
2985 }
2986
2987 struct LongStruct {
2988 U1 a1, b1;
2989 U2 a2, b2;
2990 U4 a4, b4;
2991 U8 a8, b8;
2992 };
2993
ReturnLongStruct1()2994 NOINLINE LongStruct ReturnLongStruct1() {
2995 LongStruct res;
2996 __msan_poison(&res, sizeof(res));
2997 res.a1 = res.a2 = res.a4 = res.a8 = 111;
2998 // leaves b1, .., b8 poisoned.
2999 return res;
3000 }
3001
ReturnLongStruct2()3002 NOINLINE LongStruct ReturnLongStruct2() {
3003 LongStruct res;
3004 __msan_poison(&res, sizeof(res));
3005 res.b1 = res.b2 = res.b4 = res.b8 = 111;
3006 // leaves a1, .., a8 poisoned.
3007 return res;
3008 }
3009
TEST(MemorySanitizer,LongStruct)3010 TEST(MemorySanitizer, LongStruct) {
3011 LongStruct s1 = ReturnLongStruct1();
3012 __msan_print_shadow(&s1, sizeof(s1));
3013 EXPECT_NOT_POISONED(s1.a1);
3014 EXPECT_NOT_POISONED(s1.a2);
3015 EXPECT_NOT_POISONED(s1.a4);
3016 EXPECT_NOT_POISONED(s1.a8);
3017
3018 EXPECT_POISONED(s1.b1);
3019 EXPECT_POISONED(s1.b2);
3020 EXPECT_POISONED(s1.b4);
3021 EXPECT_POISONED(s1.b8);
3022
3023 LongStruct s2 = ReturnLongStruct2();
3024 __msan_print_shadow(&s2, sizeof(s2));
3025 EXPECT_NOT_POISONED(s2.b1);
3026 EXPECT_NOT_POISONED(s2.b2);
3027 EXPECT_NOT_POISONED(s2.b4);
3028 EXPECT_NOT_POISONED(s2.b8);
3029
3030 EXPECT_POISONED(s2.a1);
3031 EXPECT_POISONED(s2.a2);
3032 EXPECT_POISONED(s2.a4);
3033 EXPECT_POISONED(s2.a8);
3034 }
3035
3036 #if defined(__FreeBSD__) || defined(__NetBSD__)
3037 #define MSAN_TEST_PRLIMIT 0
3038 #elif defined(__GLIBC__)
3039 #define MSAN_TEST_PRLIMIT __GLIBC_PREREQ(2, 13)
3040 #else
3041 #define MSAN_TEST_PRLIMIT 1
3042 #endif
3043
TEST(MemorySanitizer,getrlimit)3044 TEST(MemorySanitizer, getrlimit) {
3045 struct rlimit limit;
3046 __msan_poison(&limit, sizeof(limit));
3047 int result = getrlimit(RLIMIT_DATA, &limit);
3048 ASSERT_EQ(result, 0);
3049 EXPECT_NOT_POISONED(limit.rlim_cur);
3050 EXPECT_NOT_POISONED(limit.rlim_max);
3051
3052 #if MSAN_TEST_PRLIMIT
3053 struct rlimit limit2;
3054 __msan_poison(&limit2, sizeof(limit2));
3055 result = prlimit(getpid(), RLIMIT_DATA, &limit, &limit2);
3056 ASSERT_EQ(result, 0);
3057 EXPECT_NOT_POISONED(limit2.rlim_cur);
3058 EXPECT_NOT_POISONED(limit2.rlim_max);
3059
3060 __msan_poison(&limit, sizeof(limit));
3061 result = prlimit(getpid(), RLIMIT_DATA, nullptr, &limit);
3062 ASSERT_EQ(result, 0);
3063 EXPECT_NOT_POISONED(limit.rlim_cur);
3064 EXPECT_NOT_POISONED(limit.rlim_max);
3065
3066 result = prlimit(getpid(), RLIMIT_DATA, &limit, nullptr);
3067 ASSERT_EQ(result, 0);
3068 #endif
3069 }
3070
TEST(MemorySanitizer,getrusage)3071 TEST(MemorySanitizer, getrusage) {
3072 struct rusage usage;
3073 __msan_poison(&usage, sizeof(usage));
3074 int result = getrusage(RUSAGE_SELF, &usage);
3075 ASSERT_EQ(result, 0);
3076 EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
3077 EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
3078 EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
3079 EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
3080 EXPECT_NOT_POISONED(usage.ru_maxrss);
3081 EXPECT_NOT_POISONED(usage.ru_minflt);
3082 EXPECT_NOT_POISONED(usage.ru_majflt);
3083 EXPECT_NOT_POISONED(usage.ru_inblock);
3084 EXPECT_NOT_POISONED(usage.ru_oublock);
3085 EXPECT_NOT_POISONED(usage.ru_nvcsw);
3086 EXPECT_NOT_POISONED(usage.ru_nivcsw);
3087 }
3088
3089 #if defined(__FreeBSD__) || defined(__NetBSD__)
GetProgramPath(char * buf,size_t sz)3090 static void GetProgramPath(char *buf, size_t sz) {
3091 #if defined(__FreeBSD__)
3092 int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
3093 #elif defined(__NetBSD__)
3094 int mib[4] = { CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME};
3095 #endif
3096 int res = sysctl(mib, 4, buf, &sz, NULL, 0);
3097 ASSERT_EQ(0, res);
3098 }
3099 #elif defined(__GLIBC__)
GetProgramPath(char * buf,size_t sz)3100 static void GetProgramPath(char *buf, size_t sz) {
3101 extern char *program_invocation_name;
3102 int res = snprintf(buf, sz, "%s", program_invocation_name);
3103 ASSERT_GE(res, 0);
3104 ASSERT_LT((size_t)res, sz);
3105 }
3106 #else
3107 # error "TODO: port this"
3108 #endif
3109
dladdr_testfn()3110 static void dladdr_testfn() {}
3111
TEST(MemorySanitizer,dladdr)3112 TEST(MemorySanitizer, dladdr) {
3113 Dl_info info;
3114 __msan_poison(&info, sizeof(info));
3115 int result = dladdr((const void*)dladdr_testfn, &info);
3116 ASSERT_NE(result, 0);
3117 EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
3118 if (info.dli_fname)
3119 EXPECT_NOT_POISONED(strlen(info.dli_fname));
3120 EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
3121 EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
3122 if (info.dli_sname)
3123 EXPECT_NOT_POISONED(strlen(info.dli_sname));
3124 EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
3125 }
3126
3127 #ifndef MSAN_TEST_DISABLE_DLOPEN
3128
dl_phdr_callback(struct dl_phdr_info * info,size_t size,void * data)3129 static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
3130 (*(int *)data)++;
3131 EXPECT_NOT_POISONED(info->dlpi_addr);
3132 EXPECT_NOT_POISONED(strlen(info->dlpi_name));
3133 EXPECT_NOT_POISONED(info->dlpi_phnum);
3134 for (int i = 0; i < info->dlpi_phnum; ++i)
3135 EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
3136 return 0;
3137 }
3138
3139 // Compute the path to our loadable DSO. We assume it's in the same
3140 // directory. Only use string routines that we intercept so far to do this.
GetPathToLoadable(char * buf,size_t sz)3141 static void GetPathToLoadable(char *buf, size_t sz) {
3142 char program_path[kMaxPathLength];
3143 GetProgramPath(program_path, sizeof(program_path));
3144
3145 const char *last_slash = strrchr(program_path, '/');
3146 ASSERT_NE(nullptr, last_slash);
3147 size_t dir_len = (size_t)(last_slash - program_path);
3148 #if defined(__x86_64__)
3149 static const char basename[] = "libmsan_loadable.x86_64.so";
3150 #elif defined(__MIPSEB__) || defined(MIPSEB)
3151 static const char basename[] = "libmsan_loadable.mips64.so";
3152 #elif defined(__mips64)
3153 static const char basename[] = "libmsan_loadable.mips64el.so";
3154 #elif defined(__aarch64__)
3155 static const char basename[] = "libmsan_loadable.aarch64.so";
3156 #elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
3157 static const char basename[] = "libmsan_loadable.powerpc64.so";
3158 #elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
3159 static const char basename[] = "libmsan_loadable.powerpc64le.so";
3160 #endif
3161 int res = snprintf(buf, sz, "%.*s/%s",
3162 (int)dir_len, program_path, basename);
3163 ASSERT_GE(res, 0);
3164 ASSERT_LT((size_t)res, sz);
3165 }
3166
TEST(MemorySanitizer,dl_iterate_phdr)3167 TEST(MemorySanitizer, dl_iterate_phdr) {
3168 char path[kMaxPathLength];
3169 GetPathToLoadable(path, sizeof(path));
3170
3171 // Having at least one dlopen'ed library in the process makes this more
3172 // entertaining.
3173 void *lib = dlopen(path, RTLD_LAZY);
3174 ASSERT_NE((void*)0, lib);
3175
3176 int count = 0;
3177 int result = dl_iterate_phdr(dl_phdr_callback, &count);
3178 ASSERT_GT(count, 0);
3179
3180 dlclose(lib);
3181 }
3182
TEST(MemorySanitizer,dlopen)3183 TEST(MemorySanitizer, dlopen) {
3184 char path[kMaxPathLength];
3185 GetPathToLoadable(path, sizeof(path));
3186
3187 // We need to clear shadow for globals when doing dlopen. In order to test
3188 // this, we have to poison the shadow for the DSO before we load it. In
3189 // general this is difficult, but the loader tends to reload things in the
3190 // same place, so we open, close, and then reopen. The global should always
3191 // start out clean after dlopen.
3192 for (int i = 0; i < 2; i++) {
3193 void *lib = dlopen(path, RTLD_LAZY);
3194 if (lib == NULL) {
3195 printf("dlerror: %s\n", dlerror());
3196 ASSERT_TRUE(lib != NULL);
3197 }
3198 void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
3199 ASSERT_TRUE(get_dso_global != NULL);
3200 void **dso_global = get_dso_global();
3201 EXPECT_NOT_POISONED(*dso_global);
3202 __msan_poison(dso_global, sizeof(*dso_global));
3203 EXPECT_POISONED(*dso_global);
3204 dlclose(lib);
3205 }
3206 }
3207
3208 // Regression test for a crash in dlopen() interceptor.
TEST(MemorySanitizer,dlopenFailed)3209 TEST(MemorySanitizer, dlopenFailed) {
3210 const char *path = "/libmsan_loadable_does_not_exist.so";
3211 void *lib = dlopen(path, RTLD_LAZY);
3212 ASSERT_TRUE(lib == NULL);
3213 }
3214
3215 #endif // MSAN_TEST_DISABLE_DLOPEN
3216
3217 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,sched_getaffinity)3218 TEST(MemorySanitizer, sched_getaffinity) {
3219 cpu_set_t mask;
3220 if (sched_getaffinity(getpid(), sizeof(mask), &mask) == 0)
3221 EXPECT_NOT_POISONED(mask);
3222 else {
3223 // The call to sched_getaffinity() may have failed because the Affinity
3224 // mask is too small for the number of CPUs on the system (i.e. the
3225 // system has more than 1024 CPUs). Allocate a mask large enough for
3226 // twice as many CPUs.
3227 cpu_set_t *DynAffinity;
3228 DynAffinity = CPU_ALLOC(2048);
3229 int res = sched_getaffinity(getpid(), CPU_ALLOC_SIZE(2048), DynAffinity);
3230 ASSERT_EQ(0, res);
3231 EXPECT_NOT_POISONED(*DynAffinity);
3232 }
3233 }
3234 #endif
3235
TEST(MemorySanitizer,scanf)3236 TEST(MemorySanitizer, scanf) {
3237 const char *input = "42 hello";
3238 int* d = new int;
3239 char* s = new char[7];
3240 int res = sscanf(input, "%d %5s", d, s);
3241 printf("res %d\n", res);
3242 ASSERT_EQ(res, 2);
3243 EXPECT_NOT_POISONED(*d);
3244 EXPECT_NOT_POISONED(s[0]);
3245 EXPECT_NOT_POISONED(s[1]);
3246 EXPECT_NOT_POISONED(s[2]);
3247 EXPECT_NOT_POISONED(s[3]);
3248 EXPECT_NOT_POISONED(s[4]);
3249 EXPECT_NOT_POISONED(s[5]);
3250 EXPECT_POISONED(s[6]);
3251 delete[] s;
3252 delete d;
3253 }
3254
SimpleThread_threadfn(void * data)3255 static void *SimpleThread_threadfn(void* data) {
3256 return new int;
3257 }
3258
TEST(MemorySanitizer,SimpleThread)3259 TEST(MemorySanitizer, SimpleThread) {
3260 pthread_t t;
3261 void *p;
3262 int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
3263 ASSERT_EQ(0, res);
3264 EXPECT_NOT_POISONED(t);
3265 res = pthread_join(t, &p);
3266 ASSERT_EQ(0, res);
3267 EXPECT_NOT_POISONED(p);
3268 delete (int*)p;
3269 }
3270
SmallStackThread_threadfn(void * data)3271 static void *SmallStackThread_threadfn(void* data) {
3272 return 0;
3273 }
3274
3275 #ifdef PTHREAD_STACK_MIN
3276 constexpr int kThreadStackMin = PTHREAD_STACK_MIN;
3277 #else
3278 constexpr int kThreadStackMin = 0;
3279 #endif
3280
TEST(MemorySanitizer,SmallStackThread)3281 TEST(MemorySanitizer, SmallStackThread) {
3282 pthread_attr_t attr;
3283 pthread_t t;
3284 void *p;
3285 int res;
3286 res = pthread_attr_init(&attr);
3287 ASSERT_EQ(0, res);
3288 res = pthread_attr_setstacksize(&attr, std::max(kThreadStackMin, 64 * 1024));
3289 ASSERT_EQ(0, res);
3290 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
3291 ASSERT_EQ(0, res);
3292 res = pthread_join(t, &p);
3293 ASSERT_EQ(0, res);
3294 res = pthread_attr_destroy(&attr);
3295 ASSERT_EQ(0, res);
3296 }
3297
TEST(MemorySanitizer,SmallPreAllocatedStackThread)3298 TEST(MemorySanitizer, SmallPreAllocatedStackThread) {
3299 pthread_attr_t attr;
3300 pthread_t t;
3301 int res;
3302 res = pthread_attr_init(&attr);
3303 ASSERT_EQ(0, res);
3304 void *stack;
3305 const size_t kStackSize = std::max(kThreadStackMin, 32 * 1024);
3306 res = posix_memalign(&stack, 4096, kStackSize);
3307 ASSERT_EQ(0, res);
3308 res = pthread_attr_setstack(&attr, stack, kStackSize);
3309 ASSERT_EQ(0, res);
3310 res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
3311 EXPECT_EQ(0, res);
3312 res = pthread_join(t, NULL);
3313 ASSERT_EQ(0, res);
3314 res = pthread_attr_destroy(&attr);
3315 ASSERT_EQ(0, res);
3316 }
3317
TEST(MemorySanitizer,pthread_attr_get)3318 TEST(MemorySanitizer, pthread_attr_get) {
3319 pthread_attr_t attr;
3320 int res;
3321 res = pthread_attr_init(&attr);
3322 ASSERT_EQ(0, res);
3323 {
3324 int v;
3325 res = pthread_attr_getdetachstate(&attr, &v);
3326 ASSERT_EQ(0, res);
3327 EXPECT_NOT_POISONED(v);
3328 }
3329 {
3330 size_t v;
3331 res = pthread_attr_getguardsize(&attr, &v);
3332 ASSERT_EQ(0, res);
3333 EXPECT_NOT_POISONED(v);
3334 }
3335 {
3336 struct sched_param v;
3337 res = pthread_attr_getschedparam(&attr, &v);
3338 ASSERT_EQ(0, res);
3339 EXPECT_NOT_POISONED(v);
3340 }
3341 {
3342 int v;
3343 res = pthread_attr_getschedpolicy(&attr, &v);
3344 ASSERT_EQ(0, res);
3345 EXPECT_NOT_POISONED(v);
3346 }
3347 {
3348 int v;
3349 res = pthread_attr_getinheritsched(&attr, &v);
3350 ASSERT_EQ(0, res);
3351 EXPECT_NOT_POISONED(v);
3352 }
3353 {
3354 int v;
3355 res = pthread_attr_getscope(&attr, &v);
3356 ASSERT_EQ(0, res);
3357 EXPECT_NOT_POISONED(v);
3358 }
3359 {
3360 size_t v;
3361 res = pthread_attr_getstacksize(&attr, &v);
3362 ASSERT_EQ(0, res);
3363 EXPECT_NOT_POISONED(v);
3364 }
3365 {
3366 void *v;
3367 size_t w;
3368 res = pthread_attr_getstack(&attr, &v, &w);
3369 ASSERT_EQ(0, res);
3370 EXPECT_NOT_POISONED(v);
3371 EXPECT_NOT_POISONED(w);
3372 }
3373 #if !defined(__NetBSD__)
3374 {
3375 cpu_set_t v;
3376 res = pthread_attr_getaffinity_np(&attr, sizeof(v), &v);
3377 ASSERT_EQ(0, res);
3378 EXPECT_NOT_POISONED(v);
3379 }
3380 #endif
3381 res = pthread_attr_destroy(&attr);
3382 ASSERT_EQ(0, res);
3383 }
3384
TEST(MemorySanitizer,pthread_getschedparam)3385 TEST(MemorySanitizer, pthread_getschedparam) {
3386 int policy;
3387 struct sched_param param;
3388 int res = pthread_getschedparam(pthread_self(), &policy, ¶m);
3389 ASSERT_EQ(0, res);
3390 EXPECT_NOT_POISONED(policy);
3391 EXPECT_NOT_POISONED(param.sched_priority);
3392 }
3393
TEST(MemorySanitizer,pthread_key_create)3394 TEST(MemorySanitizer, pthread_key_create) {
3395 pthread_key_t key;
3396 int res = pthread_key_create(&key, NULL);
3397 ASSERT_EQ(0, res);
3398 EXPECT_NOT_POISONED(key);
3399 res = pthread_key_delete(key);
3400 ASSERT_EQ(0, res);
3401 }
3402
3403 namespace {
3404 struct SignalCondArg {
3405 pthread_cond_t* cond;
3406 pthread_mutex_t* mu;
3407 bool broadcast;
3408 };
3409
SignalCond(void * param)3410 void *SignalCond(void *param) {
3411 SignalCondArg *arg = reinterpret_cast<SignalCondArg *>(param);
3412 pthread_mutex_lock(arg->mu);
3413 if (arg->broadcast)
3414 pthread_cond_broadcast(arg->cond);
3415 else
3416 pthread_cond_signal(arg->cond);
3417 pthread_mutex_unlock(arg->mu);
3418 return 0;
3419 }
3420 } // namespace
3421
TEST(MemorySanitizer,pthread_cond_wait)3422 TEST(MemorySanitizer, pthread_cond_wait) {
3423 pthread_cond_t cond;
3424 pthread_mutex_t mu;
3425 SignalCondArg args = {&cond, &mu, false};
3426 pthread_cond_init(&cond, 0);
3427 pthread_mutex_init(&mu, 0);
3428 pthread_mutex_lock(&mu);
3429
3430 // signal
3431 pthread_t thr;
3432 pthread_create(&thr, 0, SignalCond, &args);
3433 int res = pthread_cond_wait(&cond, &mu);
3434 ASSERT_EQ(0, res);
3435 pthread_join(thr, 0);
3436
3437 // broadcast
3438 args.broadcast = true;
3439 pthread_create(&thr, 0, SignalCond, &args);
3440 res = pthread_cond_wait(&cond, &mu);
3441 ASSERT_EQ(0, res);
3442 pthread_join(thr, 0);
3443
3444 pthread_mutex_unlock(&mu);
3445 pthread_mutex_destroy(&mu);
3446 pthread_cond_destroy(&cond);
3447 }
3448
TEST(MemorySanitizer,tmpnam)3449 TEST(MemorySanitizer, tmpnam) {
3450 char s[L_tmpnam];
3451 char *res = tmpnam(s);
3452 ASSERT_EQ(s, res);
3453 EXPECT_NOT_POISONED(strlen(res));
3454 }
3455
TEST(MemorySanitizer,tempnam)3456 TEST(MemorySanitizer, tempnam) {
3457 char *res = tempnam(NULL, "zzz");
3458 EXPECT_NOT_POISONED(strlen(res));
3459 free(res);
3460 }
3461
TEST(MemorySanitizer,posix_memalign)3462 TEST(MemorySanitizer, posix_memalign) {
3463 void *p;
3464 EXPECT_POISONED(p);
3465 int res = posix_memalign(&p, 4096, 13);
3466 ASSERT_EQ(0, res);
3467 EXPECT_NOT_POISONED(p);
3468 EXPECT_EQ(0U, (uintptr_t)p % 4096);
3469 free(p);
3470 }
3471
3472 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,memalign)3473 TEST(MemorySanitizer, memalign) {
3474 void *p = memalign(4096, 13);
3475 EXPECT_EQ(0U, (uintptr_t)p % 4096);
3476 free(p);
3477 }
3478 #endif
3479
TEST(MemorySanitizer,valloc)3480 TEST(MemorySanitizer, valloc) {
3481 void *a = valloc(100);
3482 uintptr_t PageSize = GetPageSize();
3483 EXPECT_EQ(0U, (uintptr_t)a % PageSize);
3484 free(a);
3485 }
3486
3487 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,pvalloc)3488 TEST(MemorySanitizer, pvalloc) {
3489 uintptr_t PageSize = GetPageSize();
3490 void *p = pvalloc(PageSize + 100);
3491 EXPECT_EQ(0U, (uintptr_t)p % PageSize);
3492 EXPECT_EQ(2 * PageSize, __sanitizer_get_allocated_size(p));
3493 free(p);
3494
3495 p = pvalloc(0); // pvalloc(0) should allocate at least one page.
3496 EXPECT_EQ(0U, (uintptr_t)p % PageSize);
3497 EXPECT_EQ(PageSize, __sanitizer_get_allocated_size(p));
3498 free(p);
3499 }
3500 #endif
3501
TEST(MemorySanitizer,inet_pton)3502 TEST(MemorySanitizer, inet_pton) {
3503 const char *s = "1:0:0:0:0:0:0:8";
3504 unsigned char buf[sizeof(struct in6_addr)];
3505 int res = inet_pton(AF_INET6, s, buf);
3506 ASSERT_EQ(1, res);
3507 EXPECT_NOT_POISONED(buf[0]);
3508 EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
3509
3510 char s_out[INET6_ADDRSTRLEN];
3511 EXPECT_POISONED(s_out[3]);
3512 const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
3513 ASSERT_NE((void*)0, q);
3514 EXPECT_NOT_POISONED(s_out[3]);
3515 }
3516
TEST(MemorySanitizer,inet_aton)3517 TEST(MemorySanitizer, inet_aton) {
3518 const char *s = "127.0.0.1";
3519 struct in_addr in[2];
3520 int res = inet_aton(s, in);
3521 ASSERT_NE(0, res);
3522 EXPECT_NOT_POISONED(in[0]);
3523 EXPECT_POISONED(*(char *)(in + 1));
3524 }
3525
TEST(MemorySanitizer,uname)3526 TEST(MemorySanitizer, uname) {
3527 struct utsname u;
3528 int res = uname(&u);
3529 ASSERT_EQ(0, res);
3530 EXPECT_NOT_POISONED(strlen(u.sysname));
3531 EXPECT_NOT_POISONED(strlen(u.nodename));
3532 EXPECT_NOT_POISONED(strlen(u.release));
3533 EXPECT_NOT_POISONED(strlen(u.version));
3534 EXPECT_NOT_POISONED(strlen(u.machine));
3535 }
3536
TEST(MemorySanitizer,gethostname)3537 TEST(MemorySanitizer, gethostname) {
3538 char buf[1000];
3539 EXPECT_EQ(-1, gethostname(buf, 1));
3540 EXPECT_EQ(ENAMETOOLONG, errno);
3541 EXPECT_NOT_POISONED(buf[0]);
3542 EXPECT_POISONED(buf[1]);
3543
3544 __msan_poison(buf, sizeof(buf));
3545 EXPECT_EQ(0, gethostname(buf, sizeof(buf)));
3546 EXPECT_NOT_POISONED(strlen(buf));
3547 }
3548
3549 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,sysinfo)3550 TEST(MemorySanitizer, sysinfo) {
3551 struct sysinfo info;
3552 int res = sysinfo(&info);
3553 ASSERT_EQ(0, res);
3554 EXPECT_NOT_POISONED(info);
3555 }
3556 #endif
3557
TEST(MemorySanitizer,getpwuid)3558 TEST(MemorySanitizer, getpwuid) {
3559 struct passwd *p = getpwuid(0); // root
3560 ASSERT_TRUE(p != NULL);
3561 EXPECT_NOT_POISONED(p->pw_name);
3562 ASSERT_TRUE(p->pw_name != NULL);
3563 EXPECT_NOT_POISONED(p->pw_name[0]);
3564 EXPECT_NOT_POISONED(p->pw_uid);
3565 ASSERT_EQ(0U, p->pw_uid);
3566 }
3567
TEST(MemorySanitizer,getpwuid_r)3568 TEST(MemorySanitizer, getpwuid_r) {
3569 struct passwd pwd;
3570 struct passwd *pwdres;
3571 char buf[10000];
3572 int res = getpwuid_r(0, &pwd, buf, sizeof(buf), &pwdres);
3573 ASSERT_EQ(0, res);
3574 EXPECT_NOT_POISONED(pwd.pw_name);
3575 ASSERT_TRUE(pwd.pw_name != NULL);
3576 EXPECT_NOT_POISONED(pwd.pw_name[0]);
3577 EXPECT_NOT_POISONED(pwd.pw_uid);
3578 ASSERT_EQ(0U, pwd.pw_uid);
3579 EXPECT_NOT_POISONED(pwdres);
3580 }
3581
TEST(MemorySanitizer,getpwnam_r)3582 TEST(MemorySanitizer, getpwnam_r) {
3583 struct passwd pwd;
3584 struct passwd *pwdres;
3585 char buf[10000];
3586 int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
3587 ASSERT_EQ(0, res);
3588 EXPECT_NOT_POISONED(pwd.pw_name);
3589 ASSERT_TRUE(pwd.pw_name != NULL);
3590 EXPECT_NOT_POISONED(pwd.pw_name[0]);
3591 EXPECT_NOT_POISONED(pwd.pw_uid);
3592 ASSERT_EQ(0U, pwd.pw_uid);
3593 EXPECT_NOT_POISONED(pwdres);
3594 }
3595
TEST(MemorySanitizer,getpwnam_r_positive)3596 TEST(MemorySanitizer, getpwnam_r_positive) {
3597 struct passwd pwd;
3598 struct passwd *pwdres;
3599 char s[5];
3600 strncpy(s, "abcd", 5);
3601 __msan_poison(s, 5);
3602 char buf[10000];
3603 int res;
3604 EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
3605 }
3606
TEST(MemorySanitizer,getgrnam_r)3607 TEST(MemorySanitizer, getgrnam_r) {
3608 struct group grp;
3609 struct group *grpres;
3610 char buf[10000];
3611 int res = getgrnam_r(SUPERUSER_GROUP, &grp, buf, sizeof(buf), &grpres);
3612 ASSERT_EQ(0, res);
3613 // Note that getgrnam_r() returns 0 if the matching group is not found.
3614 ASSERT_NE(nullptr, grpres);
3615 EXPECT_NOT_POISONED(grp.gr_name);
3616 ASSERT_TRUE(grp.gr_name != NULL);
3617 EXPECT_NOT_POISONED(grp.gr_name[0]);
3618 EXPECT_NOT_POISONED(grp.gr_gid);
3619 EXPECT_NOT_POISONED(grpres);
3620 }
3621
TEST(MemorySanitizer,getpwent)3622 TEST(MemorySanitizer, getpwent) {
3623 setpwent();
3624 struct passwd *p = getpwent();
3625 ASSERT_TRUE(p != NULL);
3626 EXPECT_NOT_POISONED(p->pw_name);
3627 ASSERT_TRUE(p->pw_name != NULL);
3628 EXPECT_NOT_POISONED(p->pw_name[0]);
3629 EXPECT_NOT_POISONED(p->pw_uid);
3630 }
3631
TEST(MemorySanitizer,getpwent_r)3632 TEST(MemorySanitizer, getpwent_r) {
3633 struct passwd pwd;
3634 struct passwd *pwdres;
3635 char buf[10000];
3636 setpwent();
3637 int res = getpwent_r(&pwd, buf, sizeof(buf), &pwdres);
3638 ASSERT_EQ(0, res);
3639 EXPECT_NOT_POISONED(pwd.pw_name);
3640 ASSERT_TRUE(pwd.pw_name != NULL);
3641 EXPECT_NOT_POISONED(pwd.pw_name[0]);
3642 EXPECT_NOT_POISONED(pwd.pw_uid);
3643 EXPECT_NOT_POISONED(pwdres);
3644 }
3645
3646 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,fgetpwent)3647 TEST(MemorySanitizer, fgetpwent) {
3648 FILE *fp = fopen("/etc/passwd", "r");
3649 struct passwd *p = fgetpwent(fp);
3650 ASSERT_TRUE(p != NULL);
3651 EXPECT_NOT_POISONED(p->pw_name);
3652 ASSERT_TRUE(p->pw_name != NULL);
3653 EXPECT_NOT_POISONED(p->pw_name[0]);
3654 EXPECT_NOT_POISONED(p->pw_uid);
3655 fclose(fp);
3656 }
3657 #endif
3658
TEST(MemorySanitizer,getgrent)3659 TEST(MemorySanitizer, getgrent) {
3660 setgrent();
3661 struct group *p = getgrent();
3662 ASSERT_TRUE(p != NULL);
3663 EXPECT_NOT_POISONED(p->gr_name);
3664 ASSERT_TRUE(p->gr_name != NULL);
3665 EXPECT_NOT_POISONED(p->gr_name[0]);
3666 EXPECT_NOT_POISONED(p->gr_gid);
3667 }
3668
3669 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,fgetgrent)3670 TEST(MemorySanitizer, fgetgrent) {
3671 FILE *fp = fopen("/etc/group", "r");
3672 struct group *grp = fgetgrent(fp);
3673 ASSERT_TRUE(grp != NULL);
3674 EXPECT_NOT_POISONED(grp->gr_name);
3675 ASSERT_TRUE(grp->gr_name != NULL);
3676 EXPECT_NOT_POISONED(grp->gr_name[0]);
3677 EXPECT_NOT_POISONED(grp->gr_gid);
3678 for (char **p = grp->gr_mem; *p; ++p) {
3679 EXPECT_NOT_POISONED((*p)[0]);
3680 EXPECT_TRUE(strlen(*p) > 0);
3681 }
3682 fclose(fp);
3683 }
3684 #endif
3685
TEST(MemorySanitizer,getgrent_r)3686 TEST(MemorySanitizer, getgrent_r) {
3687 struct group grp;
3688 struct group *grpres;
3689 char buf[10000];
3690 setgrent();
3691 int res = getgrent_r(&grp, buf, sizeof(buf), &grpres);
3692 ASSERT_EQ(0, res);
3693 EXPECT_NOT_POISONED(grp.gr_name);
3694 ASSERT_TRUE(grp.gr_name != NULL);
3695 EXPECT_NOT_POISONED(grp.gr_name[0]);
3696 EXPECT_NOT_POISONED(grp.gr_gid);
3697 EXPECT_NOT_POISONED(grpres);
3698 }
3699
3700 #if !defined(__FreeBSD__) && !defined(__NetBSD__)
TEST(MemorySanitizer,fgetgrent_r)3701 TEST(MemorySanitizer, fgetgrent_r) {
3702 FILE *fp = fopen("/etc/group", "r");
3703 struct group grp;
3704 struct group *grpres;
3705 char buf[10000];
3706 setgrent();
3707 int res = fgetgrent_r(fp, &grp, buf, sizeof(buf), &grpres);
3708 ASSERT_EQ(0, res);
3709 EXPECT_NOT_POISONED(grp.gr_name);
3710 ASSERT_TRUE(grp.gr_name != NULL);
3711 EXPECT_NOT_POISONED(grp.gr_name[0]);
3712 EXPECT_NOT_POISONED(grp.gr_gid);
3713 EXPECT_NOT_POISONED(grpres);
3714 fclose(fp);
3715 }
3716 #endif
3717
TEST(MemorySanitizer,getgroups)3718 TEST(MemorySanitizer, getgroups) {
3719 int n = getgroups(0, 0);
3720 gid_t *gids = new gid_t[n];
3721 int res = getgroups(n, gids);
3722 ASSERT_EQ(n, res);
3723 for (int i = 0; i < n; ++i)
3724 EXPECT_NOT_POISONED(gids[i]);
3725 }
3726
TEST(MemorySanitizer,getgroups_zero)3727 TEST(MemorySanitizer, getgroups_zero) {
3728 gid_t group;
3729 int n = getgroups(0, &group);
3730 ASSERT_GE(n, 0);
3731 }
3732
TEST(MemorySanitizer,getgroups_negative)3733 TEST(MemorySanitizer, getgroups_negative) {
3734 gid_t group;
3735 int n = getgroups(-1, 0);
3736 ASSERT_EQ(-1, n);
3737
3738 n = getgroups(-1, 0);
3739 ASSERT_EQ(-1, n);
3740 }
3741
TEST(MemorySanitizer,wordexp)3742 TEST(MemorySanitizer, wordexp) {
3743 wordexp_t w;
3744 int res = wordexp("a b c", &w, 0);
3745 ASSERT_EQ(0, res);
3746 ASSERT_EQ(3U, w.we_wordc);
3747 ASSERT_STREQ("a", w.we_wordv[0]);
3748 ASSERT_STREQ("b", w.we_wordv[1]);
3749 ASSERT_STREQ("c", w.we_wordv[2]);
3750 }
3751
3752 template<class T>
applySlt(T value,T shadow)3753 static bool applySlt(T value, T shadow) {
3754 __msan_partial_poison(&value, &shadow, sizeof(T));
3755 volatile bool zzz = true;
3756 // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
3757 // a shift-and-trunc to get at the highest bit.
3758 volatile bool v = value < 0 || zzz;
3759 return v;
3760 }
3761
TEST(MemorySanitizer,SignedCompareWithZero)3762 TEST(MemorySanitizer, SignedCompareWithZero) {
3763 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
3764 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
3765 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
3766 EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
3767 EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
3768 EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
3769 }
3770
3771 template <class T, class S>
poisoned(T Va,S Sa)3772 static T poisoned(T Va, S Sa) {
3773 char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
3774 char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
3775 T a;
3776 a = Va;
3777 __msan_partial_poison(&a, &Sa, sizeof(T));
3778 return a;
3779 }
3780
TEST(MemorySanitizer,ICmpRelational)3781 TEST(MemorySanitizer, ICmpRelational) {
3782 EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
3783 EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
3784 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
3785 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
3786 EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
3787 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
3788 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
3789 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
3790 poisoned(-1, 0xFFFFFFFFU));
3791
3792 EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
3793 EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
3794 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
3795 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
3796 EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
3797 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
3798 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
3799 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
3800 poisoned(-1, 0xFFFFFFFFU));
3801
3802 EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
3803 EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
3804 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
3805 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
3806 EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
3807 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
3808 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
3809 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
3810 poisoned(-1, 0xFFFFFFFFU));
3811
3812 EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
3813 EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
3814 EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
3815 EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
3816 EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
3817 EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
3818 poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
3819 EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
3820 poisoned(-1, 0xFFFFFFFFU));
3821
3822 EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
3823 EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
3824 // Note that "icmp op X, Y" is approximated with "or shadow(X), shadow(Y)"
3825 // and therefore may generate false positives in some cases, e.g. the
3826 // following one:
3827 // EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
3828 }
3829
3830 #if MSAN_HAS_M128
TEST(MemorySanitizer,ICmpVectorRelational)3831 TEST(MemorySanitizer, ICmpVectorRelational) {
3832 EXPECT_NOT_POISONED(
3833 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
3834 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
3835 EXPECT_NOT_POISONED(
3836 _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
3837 poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
3838 EXPECT_POISONED(
3839 _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
3840 poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
3841 EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
3842 poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
3843 }
3844
TEST(MemorySanitizer,stmxcsr_ldmxcsr)3845 TEST(MemorySanitizer, stmxcsr_ldmxcsr) {
3846 U4 x = _mm_getcsr();
3847 EXPECT_NOT_POISONED(x);
3848
3849 _mm_setcsr(x);
3850
3851 __msan_poison(&x, sizeof(x));
3852 U4 origin = __LINE__;
3853 __msan_set_origin(&x, sizeof(x), origin);
3854 EXPECT_UMR_O(_mm_setcsr(x), origin);
3855 }
3856 #endif
3857
3858 // Volatile bitfield store is implemented as load-mask-store
3859 // Test that we don't warn on the store of (uninitialized) padding.
3860 struct VolatileBitfieldStruct {
3861 volatile unsigned x : 1;
3862 unsigned y : 1;
3863 };
3864
TEST(MemorySanitizer,VolatileBitfield)3865 TEST(MemorySanitizer, VolatileBitfield) {
3866 VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
3867 S->x = 1;
3868 EXPECT_NOT_POISONED((unsigned)S->x);
3869 EXPECT_POISONED((unsigned)S->y);
3870 }
3871
TEST(MemorySanitizer,UnalignedLoad)3872 TEST(MemorySanitizer, UnalignedLoad) {
3873 char x[32] __attribute__((aligned(8)));
3874 U4 origin = __LINE__;
3875 for (unsigned i = 0; i < sizeof(x) / 4; ++i)
3876 __msan_set_origin(x + 4 * i, 4, origin + i);
3877
3878 memset(x + 8, 0, 16);
3879 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 6), origin + 1);
3880 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 7), origin + 1);
3881 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 8));
3882 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 9));
3883 EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x + 22));
3884 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 23), origin + 6);
3885 EXPECT_POISONED_O(__sanitizer_unaligned_load16(x + 24), origin + 6);
3886
3887 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 4), origin + 1);
3888 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 7), origin + 1);
3889 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 8));
3890 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 9));
3891 EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x + 20));
3892 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 21), origin + 6);
3893 EXPECT_POISONED_O(__sanitizer_unaligned_load32(x + 24), origin + 6);
3894
3895 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x), origin);
3896 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 1), origin);
3897 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 7), origin + 1);
3898 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 8));
3899 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 9));
3900 EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x + 16));
3901 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 17), origin + 6);
3902 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 21), origin + 6);
3903 EXPECT_POISONED_O(__sanitizer_unaligned_load64(x + 24), origin + 6);
3904 }
3905
TEST(MemorySanitizer,UnalignedStore16)3906 TEST(MemorySanitizer, UnalignedStore16) {
3907 char x[5] __attribute__((aligned(4)));
3908 U2 y2 = 0;
3909 U4 origin = __LINE__;
3910 __msan_poison(&y2, 1);
3911 __msan_set_origin(&y2, 1, origin);
3912
3913 __sanitizer_unaligned_store16(x + 1, y2);
3914 EXPECT_POISONED_O(x[0], origin);
3915 EXPECT_POISONED_O(x[1], origin);
3916 EXPECT_NOT_POISONED(x[2]);
3917 EXPECT_POISONED_O(x[3], origin);
3918 }
3919
TEST(MemorySanitizer,UnalignedStore32)3920 TEST(MemorySanitizer, UnalignedStore32) {
3921 char x[8] __attribute__((aligned(4)));
3922 U4 y4 = 0;
3923 U4 origin = __LINE__;
3924 __msan_poison(&y4, 2);
3925 __msan_set_origin(&y4, 2, origin);
3926
3927 __sanitizer_unaligned_store32(x + 3, y4);
3928 EXPECT_POISONED_O(x[0], origin);
3929 EXPECT_POISONED_O(x[1], origin);
3930 EXPECT_POISONED_O(x[2], origin);
3931 EXPECT_POISONED_O(x[3], origin);
3932 EXPECT_POISONED_O(x[4], origin);
3933 EXPECT_NOT_POISONED(x[5]);
3934 EXPECT_NOT_POISONED(x[6]);
3935 EXPECT_POISONED_O(x[7], origin);
3936 }
3937
TEST(MemorySanitizer,UnalignedStore64)3938 TEST(MemorySanitizer, UnalignedStore64) {
3939 char x[16] __attribute__((aligned(8)));
3940 U8 y8 = 0;
3941 U4 origin = __LINE__;
3942 __msan_poison(&y8, 3);
3943 __msan_poison(((char *)&y8) + sizeof(y8) - 2, 1);
3944 __msan_set_origin(&y8, 8, origin);
3945
3946 __sanitizer_unaligned_store64(x + 3, y8);
3947 EXPECT_POISONED_O(x[0], origin);
3948 EXPECT_POISONED_O(x[1], origin);
3949 EXPECT_POISONED_O(x[2], origin);
3950 EXPECT_POISONED_O(x[3], origin);
3951 EXPECT_POISONED_O(x[4], origin);
3952 EXPECT_POISONED_O(x[5], origin);
3953 EXPECT_NOT_POISONED(x[6]);
3954 EXPECT_NOT_POISONED(x[7]);
3955 EXPECT_NOT_POISONED(x[8]);
3956 EXPECT_POISONED_O(x[9], origin);
3957 EXPECT_NOT_POISONED(x[10]);
3958 EXPECT_POISONED_O(x[11], origin);
3959 }
3960
TEST(MemorySanitizer,UnalignedStore16_precise)3961 TEST(MemorySanitizer, UnalignedStore16_precise) {
3962 char x[8] __attribute__((aligned(4)));
3963 U2 y = 0;
3964 U4 originx1 = __LINE__;
3965 U4 originx2 = __LINE__;
3966 U4 originy = __LINE__;
3967 __msan_poison(x, sizeof(x));
3968 __msan_set_origin(x, 4, originx1);
3969 __msan_set_origin(x + 4, 4, originx2);
3970 __msan_poison(((char *)&y) + 1, 1);
3971 __msan_set_origin(&y, sizeof(y), originy);
3972
3973 __sanitizer_unaligned_store16(x + 3, y);
3974 EXPECT_POISONED_O(x[0], originx1);
3975 EXPECT_POISONED_O(x[1], originx1);
3976 EXPECT_POISONED_O(x[2], originx1);
3977 EXPECT_NOT_POISONED(x[3]);
3978 EXPECT_POISONED_O(x[4], originy);
3979 EXPECT_POISONED_O(x[5], originy);
3980 EXPECT_POISONED_O(x[6], originy);
3981 EXPECT_POISONED_O(x[7], originy);
3982 }
3983
TEST(MemorySanitizer,UnalignedStore16_precise2)3984 TEST(MemorySanitizer, UnalignedStore16_precise2) {
3985 char x[8] __attribute__((aligned(4)));
3986 U2 y = 0;
3987 U4 originx1 = __LINE__;
3988 U4 originx2 = __LINE__;
3989 U4 originy = __LINE__;
3990 __msan_poison(x, sizeof(x));
3991 __msan_set_origin(x, 4, originx1);
3992 __msan_set_origin(x + 4, 4, originx2);
3993 __msan_poison(((char *)&y), 1);
3994 __msan_set_origin(&y, sizeof(y), originy);
3995
3996 __sanitizer_unaligned_store16(x + 3, y);
3997 EXPECT_POISONED_O(x[0], originy);
3998 EXPECT_POISONED_O(x[1], originy);
3999 EXPECT_POISONED_O(x[2], originy);
4000 EXPECT_POISONED_O(x[3], originy);
4001 EXPECT_NOT_POISONED(x[4]);
4002 EXPECT_POISONED_O(x[5], originx2);
4003 EXPECT_POISONED_O(x[6], originx2);
4004 EXPECT_POISONED_O(x[7], originx2);
4005 }
4006
TEST(MemorySanitizer,UnalignedStore64_precise)4007 TEST(MemorySanitizer, UnalignedStore64_precise) {
4008 char x[12] __attribute__((aligned(8)));
4009 U8 y = 0;
4010 U4 originx1 = __LINE__;
4011 U4 originx2 = __LINE__;
4012 U4 originx3 = __LINE__;
4013 U4 originy = __LINE__;
4014 __msan_poison(x, sizeof(x));
4015 __msan_set_origin(x, 4, originx1);
4016 __msan_set_origin(x + 4, 4, originx2);
4017 __msan_set_origin(x + 8, 4, originx3);
4018 __msan_poison(((char *)&y) + 1, 1);
4019 __msan_poison(((char *)&y) + 7, 1);
4020 __msan_set_origin(&y, sizeof(y), originy);
4021
4022 __sanitizer_unaligned_store64(x + 2, y);
4023 EXPECT_POISONED_O(x[0], originy);
4024 EXPECT_POISONED_O(x[1], originy);
4025 EXPECT_NOT_POISONED(x[2]);
4026 EXPECT_POISONED_O(x[3], originy);
4027
4028 EXPECT_NOT_POISONED(x[4]);
4029 EXPECT_NOT_POISONED(x[5]);
4030 EXPECT_NOT_POISONED(x[6]);
4031 EXPECT_NOT_POISONED(x[7]);
4032
4033 EXPECT_NOT_POISONED(x[8]);
4034 EXPECT_POISONED_O(x[9], originy);
4035 EXPECT_POISONED_O(x[10], originy);
4036 EXPECT_POISONED_O(x[11], originy);
4037 }
4038
TEST(MemorySanitizer,UnalignedStore64_precise2)4039 TEST(MemorySanitizer, UnalignedStore64_precise2) {
4040 char x[12] __attribute__((aligned(8)));
4041 U8 y = 0;
4042 U4 originx1 = __LINE__;
4043 U4 originx2 = __LINE__;
4044 U4 originx3 = __LINE__;
4045 U4 originy = __LINE__;
4046 __msan_poison(x, sizeof(x));
4047 __msan_set_origin(x, 4, originx1);
4048 __msan_set_origin(x + 4, 4, originx2);
4049 __msan_set_origin(x + 8, 4, originx3);
4050 __msan_poison(((char *)&y) + 3, 3);
4051 __msan_set_origin(&y, sizeof(y), originy);
4052
4053 __sanitizer_unaligned_store64(x + 2, y);
4054 EXPECT_POISONED_O(x[0], originx1);
4055 EXPECT_POISONED_O(x[1], originx1);
4056 EXPECT_NOT_POISONED(x[2]);
4057 EXPECT_NOT_POISONED(x[3]);
4058
4059 EXPECT_NOT_POISONED(x[4]);
4060 EXPECT_POISONED_O(x[5], originy);
4061 EXPECT_POISONED_O(x[6], originy);
4062 EXPECT_POISONED_O(x[7], originy);
4063
4064 EXPECT_NOT_POISONED(x[8]);
4065 EXPECT_NOT_POISONED(x[9]);
4066 EXPECT_POISONED_O(x[10], originx3);
4067 EXPECT_POISONED_O(x[11], originx3);
4068 }
4069
4070 #if (defined(__x86_64__) && defined(__clang__))
4071 namespace {
4072 typedef U1 V16x8 __attribute__((__vector_size__(16)));
4073 typedef U2 V8x16 __attribute__((__vector_size__(16)));
4074 typedef U4 V4x32 __attribute__((__vector_size__(16)));
4075 typedef U8 V2x64 __attribute__((__vector_size__(16)));
4076 typedef U4 V8x32 __attribute__((__vector_size__(32)));
4077 typedef U8 V4x64 __attribute__((__vector_size__(32)));
4078 typedef U4 V2x32 __attribute__((__vector_size__(8)));
4079 typedef U2 V4x16 __attribute__((__vector_size__(8)));
4080 typedef U1 V8x8 __attribute__((__vector_size__(8)));
4081
shift_sse2_left_scalar(V8x16 x,U4 y)4082 V8x16 shift_sse2_left_scalar(V8x16 x, U4 y) {
4083 return _mm_slli_epi16(x, y);
4084 }
4085
shift_sse2_left(V8x16 x,V8x16 y)4086 V8x16 shift_sse2_left(V8x16 x, V8x16 y) {
4087 return _mm_sll_epi16(x, y);
4088 }
4089
TEST(VectorShiftTest,sse2_left_scalar)4090 TEST(VectorShiftTest, sse2_left_scalar) {
4091 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7};
4092 V8x16 u = shift_sse2_left_scalar(v, 2);
4093 EXPECT_POISONED(u[0]);
4094 EXPECT_POISONED(u[1]);
4095 EXPECT_NOT_POISONED(u[0] | (3U << 2));
4096 EXPECT_NOT_POISONED(u[1] | (7U << 2));
4097 u[0] = u[1] = 0;
4098 EXPECT_NOT_POISONED(u);
4099 }
4100
TEST(VectorShiftTest,sse2_left_scalar_by_uninit)4101 TEST(VectorShiftTest, sse2_left_scalar_by_uninit) {
4102 V8x16 v = {0, 1, 2, 3, 4, 5, 6, 7};
4103 V8x16 u = shift_sse2_left_scalar(v, Poisoned<U4>());
4104 EXPECT_POISONED(u[0]);
4105 EXPECT_POISONED(u[1]);
4106 EXPECT_POISONED(u[2]);
4107 EXPECT_POISONED(u[3]);
4108 EXPECT_POISONED(u[4]);
4109 EXPECT_POISONED(u[5]);
4110 EXPECT_POISONED(u[6]);
4111 EXPECT_POISONED(u[7]);
4112 }
4113
TEST(VectorShiftTest,sse2_left)4114 TEST(VectorShiftTest, sse2_left) {
4115 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7};
4116 // Top 64 bits of shift count don't affect the result.
4117 V2x64 s = {2, Poisoned<U8>()};
4118 V8x16 u = shift_sse2_left(v, s);
4119 EXPECT_POISONED(u[0]);
4120 EXPECT_POISONED(u[1]);
4121 EXPECT_NOT_POISONED(u[0] | (3U << 2));
4122 EXPECT_NOT_POISONED(u[1] | (7U << 2));
4123 u[0] = u[1] = 0;
4124 EXPECT_NOT_POISONED(u);
4125 }
4126
TEST(VectorShiftTest,sse2_left_by_uninit)4127 TEST(VectorShiftTest, sse2_left_by_uninit) {
4128 V8x16 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3, 4, 5, 6, 7};
4129 V2x64 s = {Poisoned<U8>(), Poisoned<U8>()};
4130 V8x16 u = shift_sse2_left(v, s);
4131 EXPECT_POISONED(u[0]);
4132 EXPECT_POISONED(u[1]);
4133 EXPECT_POISONED(u[2]);
4134 EXPECT_POISONED(u[3]);
4135 EXPECT_POISONED(u[4]);
4136 EXPECT_POISONED(u[5]);
4137 EXPECT_POISONED(u[6]);
4138 EXPECT_POISONED(u[7]);
4139 }
4140
4141 #ifdef __AVX2__
shift_avx2_left(V4x32 x,V4x32 y)4142 V4x32 shift_avx2_left(V4x32 x, V4x32 y) {
4143 return _mm_sllv_epi32(x, y);
4144 }
4145 // This is variable vector shift that's only available starting with AVX2.
4146 // V4x32 shift_avx2_left(V4x32 x, V4x32 y) {
TEST(VectorShiftTest,avx2_left)4147 TEST(VectorShiftTest, avx2_left) {
4148 V4x32 v = {Poisoned<U2>(0, 3), Poisoned<U2>(0, 7), 2, 3};
4149 V4x32 s = {2, Poisoned<U4>(), 3, Poisoned<U4>()};
4150 V4x32 u = shift_avx2_left(v, s);
4151 EXPECT_POISONED(u[0]);
4152 EXPECT_NOT_POISONED(u[0] | (~7U));
4153 EXPECT_POISONED(u[1]);
4154 EXPECT_POISONED(u[1] | (~31U));
4155 EXPECT_NOT_POISONED(u[2]);
4156 EXPECT_POISONED(u[3]);
4157 EXPECT_POISONED(u[3] | (~31U));
4158 }
4159 #endif // __AVX2__
4160 } // namespace
4161
TEST(VectorPackTest,sse2_packssdw_128)4162 TEST(VectorPackTest, sse2_packssdw_128) {
4163 const unsigned S2_max = (1 << 15) - 1;
4164 V4x32 a = {Poisoned<U4>(0, 0xFF0000), Poisoned<U4>(0, 0xFFFF0000),
4165 S2_max + 100, 4};
4166 V4x32 b = {Poisoned<U4>(0, 0xFF), S2_max + 10000, Poisoned<U4>(0, 0xFF00),
4167 S2_max};
4168
4169 V8x16 c = _mm_packs_epi32(a, b);
4170
4171 EXPECT_POISONED(c[0]);
4172 EXPECT_POISONED(c[1]);
4173 EXPECT_NOT_POISONED(c[2]);
4174 EXPECT_NOT_POISONED(c[3]);
4175 EXPECT_POISONED(c[4]);
4176 EXPECT_NOT_POISONED(c[5]);
4177 EXPECT_POISONED(c[6]);
4178 EXPECT_NOT_POISONED(c[7]);
4179
4180 EXPECT_EQ(c[2], S2_max);
4181 EXPECT_EQ(c[3], 4);
4182 EXPECT_EQ(c[5], S2_max);
4183 EXPECT_EQ(c[7], S2_max);
4184 }
4185
TEST(VectorPackTest,mmx_packuswb)4186 TEST(VectorPackTest, mmx_packuswb) {
4187 const unsigned U1_max = (1 << 8) - 1;
4188 V4x16 a = {Poisoned<U2>(0, 0xFF00), Poisoned<U2>(0, 0xF000U), U1_max + 100,
4189 4};
4190 V4x16 b = {Poisoned<U2>(0, 0xFF), U1_max - 1, Poisoned<U2>(0, 0xF), U1_max};
4191 V8x8 c = _mm_packs_pu16(a, b);
4192
4193 EXPECT_POISONED(c[0]);
4194 EXPECT_POISONED(c[1]);
4195 EXPECT_NOT_POISONED(c[2]);
4196 EXPECT_NOT_POISONED(c[3]);
4197 EXPECT_POISONED(c[4]);
4198 EXPECT_NOT_POISONED(c[5]);
4199 EXPECT_POISONED(c[6]);
4200 EXPECT_NOT_POISONED(c[7]);
4201
4202 EXPECT_EQ(c[2], U1_max);
4203 EXPECT_EQ(c[3], 4);
4204 EXPECT_EQ(c[5], U1_max - 1);
4205 EXPECT_EQ(c[7], U1_max);
4206 }
4207
TEST(VectorSadTest,sse2_psad_bw)4208 TEST(VectorSadTest, sse2_psad_bw) {
4209 V16x8 a = {Poisoned<U1>(), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
4210 V16x8 b = {100, 101, 102, 103, 104, 105, 106, 107,
4211 108, 109, 110, 111, 112, 113, 114, 115};
4212 V2x64 c = _mm_sad_epu8(a, b);
4213
4214 EXPECT_POISONED(c[0]);
4215 EXPECT_NOT_POISONED(c[1]);
4216
4217 EXPECT_EQ(800U, c[1]);
4218 }
4219
TEST(VectorMaddTest,mmx_pmadd_wd)4220 TEST(VectorMaddTest, mmx_pmadd_wd) {
4221 V4x16 a = {Poisoned<U2>(), 1, 2, 3};
4222 V4x16 b = {100, 101, 102, 103};
4223 V2x32 c = _mm_madd_pi16(a, b);
4224
4225 EXPECT_POISONED(c[0]);
4226 EXPECT_NOT_POISONED(c[1]);
4227
4228 EXPECT_EQ((unsigned)(2 * 102 + 3 * 103), c[1]);
4229 }
4230
TEST(VectorCmpTest,mm_cmpneq_ps)4231 TEST(VectorCmpTest, mm_cmpneq_ps) {
4232 V4x32 c;
4233 c = _mm_cmpneq_ps(V4x32{Poisoned<U4>(), 1, 2, 3}, V4x32{4, 5, Poisoned<U4>(), 6});
4234 EXPECT_POISONED(c[0]);
4235 EXPECT_NOT_POISONED(c[1]);
4236 EXPECT_POISONED(c[2]);
4237 EXPECT_NOT_POISONED(c[3]);
4238
4239 c = _mm_cmpneq_ps(V4x32{0, 1, 2, 3}, V4x32{4, 5, 6, 7});
4240 EXPECT_NOT_POISONED(c);
4241 }
4242
TEST(VectorCmpTest,mm_cmpneq_sd)4243 TEST(VectorCmpTest, mm_cmpneq_sd) {
4244 V2x64 c;
4245 c = _mm_cmpneq_sd(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3});
4246 EXPECT_POISONED(c[0]);
4247 c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3});
4248 EXPECT_POISONED(c[0]);
4249 c = _mm_cmpneq_sd(V2x64{1, 2}, V2x64{3, 4});
4250 EXPECT_NOT_POISONED(c[0]);
4251 c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()});
4252 EXPECT_NOT_POISONED(c[0]);
4253 c = _mm_cmpneq_sd(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()});
4254 EXPECT_NOT_POISONED(c[0]);
4255 }
4256
TEST(VectorCmpTest,builtin_ia32_ucomisdlt)4257 TEST(VectorCmpTest, builtin_ia32_ucomisdlt) {
4258 U4 c;
4259 c = __builtin_ia32_ucomisdlt(V2x64{Poisoned<U8>(), 1}, V2x64{2, 3});
4260 EXPECT_POISONED(c);
4261 c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{Poisoned<U8>(), 3});
4262 EXPECT_POISONED(c);
4263 c = __builtin_ia32_ucomisdlt(V2x64{1, 2}, V2x64{3, 4});
4264 EXPECT_NOT_POISONED(c);
4265 c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{2, Poisoned<U8>()});
4266 EXPECT_NOT_POISONED(c);
4267 c = __builtin_ia32_ucomisdlt(V2x64{1, Poisoned<U8>()}, V2x64{1, Poisoned<U8>()});
4268 EXPECT_NOT_POISONED(c);
4269 }
4270
4271 #endif // defined(__x86_64__) && defined(__clang__)
4272
TEST(MemorySanitizerOrigins,SetGet)4273 TEST(MemorySanitizerOrigins, SetGet) {
4274 EXPECT_EQ(TrackingOrigins(), !!__msan_get_track_origins());
4275 if (!TrackingOrigins()) return;
4276 int x;
4277 __msan_set_origin(&x, sizeof(x), 1234);
4278 EXPECT_ORIGIN(1234U, __msan_get_origin(&x));
4279 __msan_set_origin(&x, sizeof(x), 5678);
4280 EXPECT_ORIGIN(5678U, __msan_get_origin(&x));
4281 __msan_set_origin(&x, sizeof(x), 0);
4282 EXPECT_ORIGIN(0U, __msan_get_origin(&x));
4283 }
4284
4285 namespace {
4286 struct S {
4287 U4 dummy;
4288 U2 a;
4289 U2 b;
4290 };
4291
TEST(MemorySanitizerOrigins,InitializedStoreDoesNotChangeOrigin)4292 TEST(MemorySanitizerOrigins, InitializedStoreDoesNotChangeOrigin) {
4293 if (!TrackingOrigins()) return;
4294
4295 S s;
4296 U4 origin = rand();
4297 s.a = *GetPoisonedO<U2>(0, origin);
4298 EXPECT_ORIGIN(origin, __msan_get_origin(&s.a));
4299 EXPECT_ORIGIN(origin, __msan_get_origin(&s.b));
4300
4301 s.b = 42;
4302 EXPECT_ORIGIN(origin, __msan_get_origin(&s.a));
4303 EXPECT_ORIGIN(origin, __msan_get_origin(&s.b));
4304 }
4305 } // namespace
4306
4307 template<class T, class BinaryOp>
4308 ALWAYS_INLINE
BinaryOpOriginTest(BinaryOp op)4309 void BinaryOpOriginTest(BinaryOp op) {
4310 U4 ox = rand(); //NOLINT
4311 U4 oy = rand(); //NOLINT
4312 T *x = GetPoisonedO<T>(0, ox, 0);
4313 T *y = GetPoisonedO<T>(1, oy, 0);
4314 T *z = GetPoisonedO<T>(2, 0, 0);
4315
4316 *z = op(*x, *y);
4317 U4 origin = __msan_get_origin(z);
4318 EXPECT_POISONED_O(*z, origin);
4319 EXPECT_EQ(true, __msan_origin_is_descendant_or_same(origin, ox) ||
4320 __msan_origin_is_descendant_or_same(origin, oy));
4321
4322 // y is poisoned, x is not.
4323 *x = 10101;
4324 *y = *GetPoisonedO<T>(1, oy);
4325 break_optimization(x);
4326 __msan_set_origin(z, sizeof(*z), 0);
4327 *z = op(*x, *y);
4328 EXPECT_POISONED_O(*z, oy);
4329 EXPECT_ORIGIN(oy, __msan_get_origin(z));
4330
4331 // x is poisoned, y is not.
4332 *x = *GetPoisonedO<T>(0, ox);
4333 *y = 10101010;
4334 break_optimization(y);
4335 __msan_set_origin(z, sizeof(*z), 0);
4336 *z = op(*x, *y);
4337 EXPECT_POISONED_O(*z, ox);
4338 EXPECT_ORIGIN(ox, __msan_get_origin(z));
4339 }
4340
XOR(const T & a,const T & b)4341 template<class T> ALWAYS_INLINE T XOR(const T &a, const T&b) { return a ^ b; }
ADD(const T & a,const T & b)4342 template<class T> ALWAYS_INLINE T ADD(const T &a, const T&b) { return a + b; }
SUB(const T & a,const T & b)4343 template<class T> ALWAYS_INLINE T SUB(const T &a, const T&b) { return a - b; }
MUL(const T & a,const T & b)4344 template<class T> ALWAYS_INLINE T MUL(const T &a, const T&b) { return a * b; }
AND(const T & a,const T & b)4345 template<class T> ALWAYS_INLINE T AND(const T &a, const T&b) { return a & b; }
OR(const T & a,const T & b)4346 template<class T> ALWAYS_INLINE T OR (const T &a, const T&b) { return a | b; }
4347
TEST(MemorySanitizerOrigins,BinaryOp)4348 TEST(MemorySanitizerOrigins, BinaryOp) {
4349 if (!TrackingOrigins()) return;
4350 BinaryOpOriginTest<S8>(XOR<S8>);
4351 BinaryOpOriginTest<U8>(ADD<U8>);
4352 BinaryOpOriginTest<S4>(SUB<S4>);
4353 BinaryOpOriginTest<S4>(MUL<S4>);
4354 BinaryOpOriginTest<U4>(OR<U4>);
4355 BinaryOpOriginTest<U4>(AND<U4>);
4356 BinaryOpOriginTest<double>(ADD<U4>);
4357 BinaryOpOriginTest<float>(ADD<S4>);
4358 BinaryOpOriginTest<double>(ADD<double>);
4359 BinaryOpOriginTest<float>(ADD<double>);
4360 }
4361
TEST(MemorySanitizerOrigins,Unary)4362 TEST(MemorySanitizerOrigins, Unary) {
4363 if (!TrackingOrigins()) return;
4364 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
4365 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
4366 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
4367 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
4368
4369 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4370 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4371 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4372 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4373
4374 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
4375 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
4376 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
4377 EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
4378
4379 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4380 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4381 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4382 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4383
4384 EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
4385 EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
4386 }
4387
TEST(MemorySanitizerOrigins,EQ)4388 TEST(MemorySanitizerOrigins, EQ) {
4389 if (!TrackingOrigins()) return;
4390 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
4391 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
4392 EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
4393 }
4394
TEST(MemorySanitizerOrigins,DIV)4395 TEST(MemorySanitizerOrigins, DIV) {
4396 if (!TrackingOrigins()) return;
4397 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
4398 unsigned o = __LINE__;
4399 EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
4400 }
4401
TEST(MemorySanitizerOrigins,SHIFT)4402 TEST(MemorySanitizerOrigins, SHIFT) {
4403 if (!TrackingOrigins()) return;
4404 EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
4405 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
4406 EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
4407 EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
4408 EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
4409 EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
4410 }
4411
4412 template<class T, int N>
MemCpyTest()4413 void MemCpyTest() {
4414 int ox = __LINE__;
4415 T *x = new T[N];
4416 T *y = new T[N];
4417 T *z = new T[N];
4418 T *q = new T[N];
4419 __msan_poison(x, N * sizeof(T));
4420 __msan_set_origin(x, N * sizeof(T), ox);
4421 __msan_set_origin(y, N * sizeof(T), 777777);
4422 __msan_set_origin(z, N * sizeof(T), 888888);
4423 EXPECT_NOT_POISONED(x);
4424 memcpy(y, x, N * sizeof(T));
4425 EXPECT_POISONED_O(y[0], ox);
4426 EXPECT_POISONED_O(y[N/2], ox);
4427 EXPECT_POISONED_O(y[N-1], ox);
4428 EXPECT_NOT_POISONED(x);
4429 #if !defined(__NetBSD__)
4430 void *res = mempcpy(q, x, N * sizeof(T));
4431 ASSERT_EQ(q + N, res);
4432 EXPECT_POISONED_O(q[0], ox);
4433 EXPECT_POISONED_O(q[N/2], ox);
4434 EXPECT_POISONED_O(q[N-1], ox);
4435 EXPECT_NOT_POISONED(x);
4436 #endif
4437 memmove(z, x, N * sizeof(T));
4438 EXPECT_POISONED_O(z[0], ox);
4439 EXPECT_POISONED_O(z[N/2], ox);
4440 EXPECT_POISONED_O(z[N-1], ox);
4441 }
4442
TEST(MemorySanitizerOrigins,LargeMemCpy)4443 TEST(MemorySanitizerOrigins, LargeMemCpy) {
4444 if (!TrackingOrigins()) return;
4445 MemCpyTest<U1, 10000>();
4446 MemCpyTest<U8, 10000>();
4447 }
4448
TEST(MemorySanitizerOrigins,SmallMemCpy)4449 TEST(MemorySanitizerOrigins, SmallMemCpy) {
4450 if (!TrackingOrigins()) return;
4451 MemCpyTest<U8, 1>();
4452 MemCpyTest<U8, 2>();
4453 MemCpyTest<U8, 3>();
4454 }
4455
TEST(MemorySanitizerOrigins,Select)4456 TEST(MemorySanitizerOrigins, Select) {
4457 if (!TrackingOrigins()) return;
4458 EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
4459 EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
4460 S4 x;
4461 break_optimization(&x);
4462 x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
4463
4464 EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
4465 EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
4466 }
4467
RetvalOriginTest(U4 origin)4468 NOINLINE int RetvalOriginTest(U4 origin) {
4469 int *a = new int;
4470 break_optimization(a);
4471 __msan_set_origin(a, sizeof(*a), origin);
4472 int res = *a;
4473 delete a;
4474 return res;
4475 }
4476
TEST(MemorySanitizerOrigins,Retval)4477 TEST(MemorySanitizerOrigins, Retval) {
4478 if (!TrackingOrigins()) return;
4479 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
4480 }
4481
ParamOriginTest(int param,U4 origin)4482 NOINLINE void ParamOriginTest(int param, U4 origin) {
4483 EXPECT_POISONED_O(param, origin);
4484 }
4485
TEST(MemorySanitizerOrigins,Param)4486 TEST(MemorySanitizerOrigins, Param) {
4487 if (!TrackingOrigins()) return;
4488 int *a = new int;
4489 U4 origin = __LINE__;
4490 break_optimization(a);
4491 __msan_set_origin(a, sizeof(*a), origin);
4492 ParamOriginTest(*a, origin);
4493 delete a;
4494 }
4495
TEST(MemorySanitizerOrigins,Invoke)4496 TEST(MemorySanitizerOrigins, Invoke) {
4497 if (!TrackingOrigins()) return;
4498 StructWithDtor s; // Will cause the calls to become invokes.
4499 EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
4500 }
4501
TEST(MemorySanitizerOrigins,strlen)4502 TEST(MemorySanitizerOrigins, strlen) {
4503 S8 alignment;
4504 break_optimization(&alignment);
4505 char x[4] = {'a', 'b', 0, 0};
4506 __msan_poison(&x[2], 1);
4507 U4 origin = __LINE__;
4508 __msan_set_origin(x, sizeof(x), origin);
4509 EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
4510 }
4511
TEST(MemorySanitizerOrigins,wcslen)4512 TEST(MemorySanitizerOrigins, wcslen) {
4513 wchar_t w[3] = {'a', 'b', 0};
4514 U4 origin = __LINE__;
4515 __msan_set_origin(w, sizeof(w), origin);
4516 __msan_poison(&w[2], sizeof(wchar_t));
4517 EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
4518 }
4519
4520 #if MSAN_HAS_M128
TEST(MemorySanitizerOrigins,StoreIntrinsic)4521 TEST(MemorySanitizerOrigins, StoreIntrinsic) {
4522 __m128 x, y;
4523 U4 origin = __LINE__;
4524 __msan_set_origin(&x, sizeof(x), origin);
4525 __msan_poison(&x, sizeof(x));
4526 _mm_storeu_ps((float*)&y, x);
4527 EXPECT_POISONED_O(y, origin);
4528 }
4529 #endif
4530
RecursiveMalloc(int depth)4531 NOINLINE void RecursiveMalloc(int depth) {
4532 static int count;
4533 count++;
4534 if ((count % (1024 * 1024)) == 0)
4535 printf("RecursiveMalloc: %d\n", count);
4536 int *x1 = new int;
4537 int *x2 = new int;
4538 break_optimization(x1);
4539 break_optimization(x2);
4540 if (depth > 0) {
4541 RecursiveMalloc(depth-1);
4542 RecursiveMalloc(depth-1);
4543 }
4544 delete x1;
4545 delete x2;
4546 }
4547
TEST(MemorySanitizer,Select)4548 TEST(MemorySanitizer, Select) {
4549 int x;
4550 int volatile* p = &x;
4551 int z = *p ? 1 : 0;
4552 EXPECT_POISONED(z);
4553 }
4554
TEST(MemorySanitizer,SelectPartial)4555 TEST(MemorySanitizer, SelectPartial) {
4556 // Precise instrumentation of select.
4557 // Some bits of the result do not depend on select condition, and must stay
4558 // initialized even if select condition is not. These are the bits that are
4559 // equal and initialized in both left and right select arguments.
4560 U4 x = 0xFFFFABCDU;
4561 U4 x_s = 0xFFFF0000U;
4562 __msan_partial_poison(&x, &x_s, sizeof(x));
4563 U4 y = 0xAB00U;
4564 U1 cond = true;
4565 __msan_poison(&cond, sizeof(cond));
4566 U4 z = cond ? x : y;
4567 __msan_print_shadow(&z, sizeof(z));
4568 EXPECT_POISONED(z & 0xFFU);
4569 EXPECT_NOT_POISONED(z & 0xFF00U);
4570 EXPECT_POISONED(z & 0xFF0000U);
4571 EXPECT_POISONED(z & 0xFF000000U);
4572 EXPECT_EQ(0xAB00U, z & 0xFF00U);
4573 }
4574
TEST(MemorySanitizerStress,DISABLED_MallocStackTrace)4575 TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
4576 RecursiveMalloc(22);
4577 }
4578
TEST(MemorySanitizerAllocator,get_estimated_allocated_size)4579 TEST(MemorySanitizerAllocator, get_estimated_allocated_size) {
4580 size_t sizes[] = {0, 20, 5000, 1<<20};
4581 for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) {
4582 size_t alloc_size = __sanitizer_get_estimated_allocated_size(sizes[i]);
4583 EXPECT_EQ(alloc_size, sizes[i]);
4584 }
4585 }
4586
TEST(MemorySanitizerAllocator,get_allocated_size_and_ownership)4587 TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) {
4588 char *array = reinterpret_cast<char*>(malloc(100));
4589 int *int_ptr = new int;
4590
4591 EXPECT_TRUE(__sanitizer_get_ownership(array));
4592 EXPECT_EQ(100U, __sanitizer_get_allocated_size(array));
4593
4594 EXPECT_TRUE(__sanitizer_get_ownership(int_ptr));
4595 EXPECT_EQ(sizeof(*int_ptr), __sanitizer_get_allocated_size(int_ptr));
4596
4597 void *wild_addr = reinterpret_cast<void*>(0x1);
4598 EXPECT_FALSE(__sanitizer_get_ownership(wild_addr));
4599 EXPECT_EQ(0U, __sanitizer_get_allocated_size(wild_addr));
4600
4601 EXPECT_FALSE(__sanitizer_get_ownership(array + 50));
4602 EXPECT_EQ(0U, __sanitizer_get_allocated_size(array + 50));
4603
4604 // NULL is a valid argument for GetAllocatedSize but is not owned.
4605 EXPECT_FALSE(__sanitizer_get_ownership(NULL));
4606 EXPECT_EQ(0U, __sanitizer_get_allocated_size(NULL));
4607
4608 free(array);
4609 EXPECT_FALSE(__sanitizer_get_ownership(array));
4610 EXPECT_EQ(0U, __sanitizer_get_allocated_size(array));
4611
4612 delete int_ptr;
4613 }
4614
TEST(MemorySanitizer,MlockTest)4615 TEST(MemorySanitizer, MlockTest) {
4616 EXPECT_EQ(0, mlockall(MCL_CURRENT));
4617 EXPECT_EQ(0, mlock((void*)0x12345, 0x5678));
4618 EXPECT_EQ(0, munlockall());
4619 EXPECT_EQ(0, munlock((void*)0x987, 0x654));
4620 }
4621
4622 // Test that LargeAllocator unpoisons memory before releasing it to the OS.
TEST(MemorySanitizer,LargeAllocatorUnpoisonsOnFree)4623 TEST(MemorySanitizer, LargeAllocatorUnpoisonsOnFree) {
4624 void *p = malloc(1024 * 1024);
4625 free(p);
4626
4627 typedef void *(*mmap_fn)(void *, size_t, int, int, int, off_t);
4628 mmap_fn real_mmap = (mmap_fn)dlsym(RTLD_NEXT, "mmap");
4629
4630 // Allocate the page that was released to the OS in free() with the real mmap,
4631 // bypassing the interceptor.
4632 char *q = (char *)real_mmap(p, 4096, PROT_READ | PROT_WRITE,
4633 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
4634 ASSERT_NE((char *)0, q);
4635
4636 ASSERT_TRUE(q <= p);
4637 ASSERT_TRUE(q + 4096 > p);
4638
4639 EXPECT_NOT_POISONED(q[0]);
4640 EXPECT_NOT_POISONED(q[10]);
4641 EXPECT_NOT_POISONED(q[100]);
4642
4643 munmap(q, 4096);
4644 }
4645
4646 #if SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE
TEST(MemorySanitizer,MallocUsableSizeTest)4647 TEST(MemorySanitizer, MallocUsableSizeTest) {
4648 const size_t kArraySize = 100;
4649 char *array = Ident((char*)malloc(kArraySize));
4650 int *int_ptr = Ident(new int);
4651 EXPECT_EQ(0U, malloc_usable_size(NULL));
4652 EXPECT_EQ(kArraySize, malloc_usable_size(array));
4653 EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr));
4654 free(array);
4655 delete int_ptr;
4656 }
4657 #endif // SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE
4658
4659 #ifdef __x86_64__
HaveBmi()4660 static bool HaveBmi() {
4661 U4 a = 0, b = 0, c = 0, d = 0;
4662 asm("cpuid\n\t" : "=a"(a), "=D"(b), "=c"(c), "=d"(d) : "a"(7));
4663 const U4 kBmi12Mask = (1U<<3) | (1U<<8);
4664 return (b & kBmi12Mask) == kBmi12Mask;
4665 }
4666
4667 __attribute__((target("bmi,bmi2")))
TestBZHI()4668 static void TestBZHI() {
4669 EXPECT_NOT_POISONED(
4670 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF000000), 24));
4671 EXPECT_POISONED(
4672 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0xFF800000), 24));
4673 // Second operand saturates.
4674 EXPECT_POISONED(
4675 __builtin_ia32_bzhi_si(Poisoned<U4>(0xABCDABCD, 0x80000000), 240));
4676 // Any poison in the second operand poisons output.
4677 EXPECT_POISONED(
4678 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 1)));
4679 EXPECT_POISONED(
4680 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0x80000000)));
4681 EXPECT_POISONED(
4682 __builtin_ia32_bzhi_si(0xABCDABCD, Poisoned<U4>(1, 0xFFFFFFFF)));
4683
4684 EXPECT_NOT_POISONED(
4685 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF00000000000000ULL), 56));
4686 EXPECT_POISONED(
4687 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0xFF80000000000000ULL), 56));
4688 // Second operand saturates.
4689 EXPECT_POISONED(
4690 __builtin_ia32_bzhi_di(Poisoned<U8>(0xABCDABCDABCDABCD, 0x8000000000000000ULL), 240));
4691 // Any poison in the second operand poisons output.
4692 EXPECT_POISONED(
4693 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 1)));
4694 EXPECT_POISONED(
4695 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0x8000000000000000ULL)));
4696 EXPECT_POISONED(
4697 __builtin_ia32_bzhi_di(0xABCDABCDABCDABCD, Poisoned<U8>(1, 0xFFFFFFFF00000000ULL)));
4698 }
4699
bextr_imm(U4 start,U4 len)4700 ALWAYS_INLINE U4 bextr_imm(U4 start, U4 len) {
4701 start &= 0xFF;
4702 len &= 0xFF;
4703 return (len << 8) | start;
4704 }
4705
4706 __attribute__((target("bmi,bmi2")))
TestBEXTR()4707 static void TestBEXTR() {
4708 EXPECT_POISONED(
4709 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(0, 8)));
4710 EXPECT_POISONED(
4711 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 8)));
4712 EXPECT_NOT_POISONED(
4713 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 8)));
4714 EXPECT_NOT_POISONED(
4715 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(8, 800)));
4716 EXPECT_POISONED(
4717 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(7, 800)));
4718 EXPECT_NOT_POISONED(
4719 __builtin_ia32_bextr_u32(Poisoned<U4>(0xABCDABCD, 0xFF), bextr_imm(5, 0)));
4720
4721 EXPECT_POISONED(
4722 __builtin_ia32_bextr_u32(0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 1)));
4723 EXPECT_POISONED(__builtin_ia32_bextr_u32(
4724 0xABCDABCD, Poisoned<U4>(bextr_imm(7, 800), 0x80000000)));
4725
4726 EXPECT_POISONED(
4727 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(0, 8)));
4728 EXPECT_POISONED(
4729 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 8)));
4730 EXPECT_NOT_POISONED(
4731 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 8)));
4732 EXPECT_NOT_POISONED(
4733 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(8, 800)));
4734 EXPECT_POISONED(
4735 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(7, 800)));
4736 EXPECT_NOT_POISONED(
4737 __builtin_ia32_bextr_u64(Poisoned<U8>(0xABCDABCD, 0xFF), bextr_imm(5, 0)));
4738
4739 // Poison in the top half.
4740 EXPECT_NOT_POISONED(__builtin_ia32_bextr_u64(
4741 Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 8)));
4742 EXPECT_POISONED(__builtin_ia32_bextr_u64(
4743 Poisoned<U8>(0xABCDABCD, 0xFF0000000000), bextr_imm(32, 9)));
4744
4745 EXPECT_POISONED(
4746 __builtin_ia32_bextr_u64(0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 1)));
4747 EXPECT_POISONED(__builtin_ia32_bextr_u64(
4748 0xABCDABCD, Poisoned<U8>(bextr_imm(7, 800), 0x80000000)));
4749 }
4750
4751 __attribute__((target("bmi,bmi2")))
TestPDEP()4752 static void TestPDEP() {
4753 U4 x = Poisoned<U4>(0, 0xFF00);
4754 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF));
4755 EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF));
4756 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0xFF00));
4757 EXPECT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00));
4758
4759 EXPECT_NOT_POISONED(__builtin_ia32_pdep_si(x, 0x1FF00) & 0xFF);
4760 EXPECT_POISONED(__builtin_ia32_pdep_si(0, Poisoned<U4>(0xF, 1)));
4761
4762 U8 y = Poisoned<U8>(0, 0xFF00);
4763 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF));
4764 EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF));
4765 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0xFF0000000000));
4766 EXPECT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF000000000000));
4767
4768 EXPECT_NOT_POISONED(__builtin_ia32_pdep_di(y, 0x1FF00) & 0xFF);
4769 EXPECT_POISONED(__builtin_ia32_pdep_di(0, Poisoned<U4>(0xF, 1)));
4770 }
4771
4772 __attribute__((target("bmi,bmi2")))
TestPEXT()4773 static void TestPEXT() {
4774 U4 x = Poisoned<U4>(0, 0xFF00);
4775 EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0xFF));
4776 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1FF));
4777 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x100));
4778 EXPECT_POISONED(__builtin_ia32_pext_si(x, 0x1000));
4779 EXPECT_NOT_POISONED(__builtin_ia32_pext_si(x, 0x10000));
4780
4781 EXPECT_POISONED(__builtin_ia32_pext_si(0xFF00, Poisoned<U4>(0xFF, 1)));
4782
4783 U8 y = Poisoned<U8>(0, 0xFF0000000000);
4784 EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0xFF00000000));
4785 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x1FF00000000));
4786 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x10000000000));
4787 EXPECT_POISONED(__builtin_ia32_pext_di(y, 0x100000000000));
4788 EXPECT_NOT_POISONED(__builtin_ia32_pext_di(y, 0x1000000000000));
4789
4790 EXPECT_POISONED(__builtin_ia32_pext_di(0xFF00, Poisoned<U8>(0xFF, 1)));
4791 }
4792
TEST(MemorySanitizer,Bmi)4793 TEST(MemorySanitizer, Bmi) {
4794 if (HaveBmi()) {
4795 TestBZHI();
4796 TestBEXTR();
4797 TestPDEP();
4798 TestPEXT();
4799 }
4800 }
4801 #endif // defined(__x86_64__)
4802
4803 namespace {
4804 volatile long z;
4805
f(long a,long b,long c,long d,long e,long f)4806 __attribute__((noinline,optnone)) void f(long a, long b, long c, long d, long e, long f) {
4807 z = a + b + c + d + e + f;
4808 }
4809
throw_stuff()4810 __attribute__((noinline,optnone)) void throw_stuff() {
4811 throw 5;
4812 }
4813
TEST(MemorySanitizer,throw_catch)4814 TEST(MemorySanitizer, throw_catch) {
4815 long x;
4816 // Poison __msan_param_tls.
4817 __msan_poison(&x, sizeof(x));
4818 f(x, x, x, x, x, x);
4819 try {
4820 // This calls __gxx_personality_v0 through some libgcc_s function.
4821 // __gxx_personality_v0 is instrumented, libgcc_s is not; as a result,
4822 // __msan_param_tls is not updated and __gxx_personality_v0 can find
4823 // leftover poison from the previous call.
4824 // A suppression in msan_blacklist.txt makes it work.
4825 throw_stuff();
4826 } catch (const int &e) {
4827 // pass
4828 }
4829 }
4830 } // namespace
4831