1//=-- lsan_interceptors.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 LeakSanitizer.
10// Interceptors for standalone LSan.
11//
12//===----------------------------------------------------------------------===//
13
14#include "interception/interception.h"
15#include "sanitizer_common/sanitizer_allocator.h"
16#include "sanitizer_common/sanitizer_allocator_dlsym.h"
17#include "sanitizer_common/sanitizer_allocator_report.h"
18#include "sanitizer_common/sanitizer_atomic.h"
19#include "sanitizer_common/sanitizer_common.h"
20#include "sanitizer_common/sanitizer_flags.h"
21#include "sanitizer_common/sanitizer_internal_defs.h"
22#include "sanitizer_common/sanitizer_linux.h"
23#include "sanitizer_common/sanitizer_platform_interceptors.h"
24#include "sanitizer_common/sanitizer_platform_limits_netbsd.h"
25#include "sanitizer_common/sanitizer_platform_limits_posix.h"
26#if SANITIZER_POSIX
27#include "sanitizer_common/sanitizer_posix.h"
28#endif
29#include "sanitizer_common/sanitizer_tls_get_addr.h"
30#include "lsan.h"
31#include "lsan_allocator.h"
32#include "lsan_common.h"
33#include "lsan_thread.h"
34
35#include <stddef.h>
36
37using namespace __lsan;
38
39extern "C" {
40int pthread_attr_init(void *attr);
41int pthread_attr_destroy(void *attr);
42int pthread_attr_getdetachstate(void *attr, int *v);
43int pthread_key_create(unsigned *key, void (*destructor)(void* v));
44int pthread_setspecific(unsigned key, const void *v);
45}
46
47struct DlsymAlloc : DlSymAllocator<DlsymAlloc> {
48 static bool UseImpl() { return lsan_init_is_running; }
49 static void OnAllocate(const void *ptr, uptr size) {
50#if CAN_SANITIZE_LEAKS
51 // Suppress leaks from dlerror(). Previously dlsym hack on global array was
52 // used by leak sanitizer as a root region.
53 __lsan_register_root_region(p: ptr, size);
54#endif
55 }
56 static void OnFree(const void *ptr, uptr size) {
57#if CAN_SANITIZE_LEAKS
58 __lsan_unregister_root_region(p: ptr, size);
59#endif
60 }
61};
62
63///// Malloc/free interceptors. /////
64
65namespace std {
66 struct nothrow_t;
67 enum class align_val_t: size_t;
68}
69
70#if !SANITIZER_APPLE
71INTERCEPTOR(void*, malloc, uptr size) {
72 if (DlsymAlloc::Use())
73 return DlsymAlloc::Allocate(size_in_bytes: size);
74 ENSURE_LSAN_INITED;
75 GET_STACK_TRACE_MALLOC;
76 return lsan_malloc(size, stack);
77}
78
79INTERCEPTOR(void, free, void *p) {
80 if (DlsymAlloc::PointerIsMine(ptr: p))
81 return DlsymAlloc::Free(ptr: p);
82 ENSURE_LSAN_INITED;
83 lsan_free(p);
84}
85
86INTERCEPTOR(void*, calloc, uptr nmemb, uptr size) {
87 if (DlsymAlloc::Use())
88 return DlsymAlloc::Callocate(nmemb, size);
89 ENSURE_LSAN_INITED;
90 GET_STACK_TRACE_MALLOC;
91 return lsan_calloc(nmemb, size, stack);
92}
93
94INTERCEPTOR(void *, realloc, void *ptr, uptr size) {
95 if (DlsymAlloc::Use() || DlsymAlloc::PointerIsMine(ptr))
96 return DlsymAlloc::Realloc(ptr, new_size: size);
97 ENSURE_LSAN_INITED;
98 GET_STACK_TRACE_MALLOC;
99 return lsan_realloc(p: ptr, size, stack);
100}
101
102INTERCEPTOR(void*, reallocarray, void *q, uptr nmemb, uptr size) {
103 ENSURE_LSAN_INITED;
104 GET_STACK_TRACE_MALLOC;
105 return lsan_reallocarray(p: q, nmemb, size, stack);
106}
107
108INTERCEPTOR(int, posix_memalign, void **memptr, uptr alignment, uptr size) {
109 ENSURE_LSAN_INITED;
110 GET_STACK_TRACE_MALLOC;
111 return lsan_posix_memalign(memptr, alignment, size, stack);
112}
113
114INTERCEPTOR(void*, valloc, uptr size) {
115 ENSURE_LSAN_INITED;
116 GET_STACK_TRACE_MALLOC;
117 return lsan_valloc(size, stack);
118}
119#endif // !SANITIZER_APPLE
120
121#if SANITIZER_INTERCEPT_MEMALIGN
122INTERCEPTOR(void*, memalign, uptr alignment, uptr size) {
123 ENSURE_LSAN_INITED;
124 GET_STACK_TRACE_MALLOC;
125 return lsan_memalign(alignment, size, stack);
126}
127#define LSAN_MAYBE_INTERCEPT_MEMALIGN INTERCEPT_FUNCTION(memalign)
128#else
129#define LSAN_MAYBE_INTERCEPT_MEMALIGN
130#endif // SANITIZER_INTERCEPT_MEMALIGN
131
132#if SANITIZER_INTERCEPT___LIBC_MEMALIGN
133INTERCEPTOR(void *, __libc_memalign, uptr alignment, uptr size) {
134 ENSURE_LSAN_INITED;
135 GET_STACK_TRACE_MALLOC;
136 void *res = lsan_memalign(alignment, size, stack);
137 DTLS_on_libc_memalign(ptr: res, size);
138 return res;
139}
140#define LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN INTERCEPT_FUNCTION(__libc_memalign)
141#else
142#define LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN
143#endif // SANITIZER_INTERCEPT___LIBC_MEMALIGN
144
145#if SANITIZER_INTERCEPT_ALIGNED_ALLOC
146INTERCEPTOR(void*, aligned_alloc, uptr alignment, uptr size) {
147 ENSURE_LSAN_INITED;
148 GET_STACK_TRACE_MALLOC;
149 return lsan_aligned_alloc(alignment, size, stack);
150}
151#define LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC INTERCEPT_FUNCTION(aligned_alloc)
152#else
153#define LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC
154#endif
155
156#if SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE
157INTERCEPTOR(uptr, malloc_usable_size, void *ptr) {
158 ENSURE_LSAN_INITED;
159 return GetMallocUsableSize(p: ptr);
160}
161#define LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE \
162 INTERCEPT_FUNCTION(malloc_usable_size)
163#else
164#define LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE
165#endif
166
167#if SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
168struct fake_mallinfo {
169 int x[10];
170};
171
172INTERCEPTOR(struct fake_mallinfo, mallinfo, void) {
173 struct fake_mallinfo res;
174 internal_memset(s: &res, c: 0, n: sizeof(res));
175 return res;
176}
177#define LSAN_MAYBE_INTERCEPT_MALLINFO INTERCEPT_FUNCTION(mallinfo)
178
179INTERCEPTOR(int, mallopt, int cmd, int value) {
180 return 0;
181}
182#define LSAN_MAYBE_INTERCEPT_MALLOPT INTERCEPT_FUNCTION(mallopt)
183#else
184#define LSAN_MAYBE_INTERCEPT_MALLINFO
185#define LSAN_MAYBE_INTERCEPT_MALLOPT
186#endif // SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
187
188#if SANITIZER_INTERCEPT_PVALLOC
189INTERCEPTOR(void*, pvalloc, uptr size) {
190 ENSURE_LSAN_INITED;
191 GET_STACK_TRACE_MALLOC;
192 return lsan_pvalloc(size, stack);
193}
194#define LSAN_MAYBE_INTERCEPT_PVALLOC INTERCEPT_FUNCTION(pvalloc)
195#else
196#define LSAN_MAYBE_INTERCEPT_PVALLOC
197#endif // SANITIZER_INTERCEPT_PVALLOC
198
199#if SANITIZER_INTERCEPT_CFREE
200INTERCEPTOR(void, cfree, void *p) ALIAS(WRAP(free));
201#define LSAN_MAYBE_INTERCEPT_CFREE INTERCEPT_FUNCTION(cfree)
202#else
203#define LSAN_MAYBE_INTERCEPT_CFREE
204#endif // SANITIZER_INTERCEPT_CFREE
205
206#if SANITIZER_INTERCEPT_MCHECK_MPROBE
207INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) {
208 return 0;
209}
210
211INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) {
212 return 0;
213}
214
215INTERCEPTOR(int, mprobe, void *ptr) {
216 return 0;
217}
218#endif // SANITIZER_INTERCEPT_MCHECK_MPROBE
219
220
221// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
222#define OPERATOR_NEW_BODY(nothrow)\
223 ENSURE_LSAN_INITED;\
224 GET_STACK_TRACE_MALLOC;\
225 void *res = lsan_malloc(size, stack);\
226 if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\
227 return res;
228#define OPERATOR_NEW_BODY_ALIGN(nothrow)\
229 ENSURE_LSAN_INITED;\
230 GET_STACK_TRACE_MALLOC;\
231 void *res = lsan_memalign((uptr)align, size, stack);\
232 if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\
233 return res;
234
235#define OPERATOR_DELETE_BODY\
236 ENSURE_LSAN_INITED;\
237 lsan_free(ptr);
238
239// On OS X it's not enough to just provide our own 'operator new' and
240// 'operator delete' implementations, because they're going to be in the runtime
241// dylib, and the main executable will depend on both the runtime dylib and
242// libstdc++, each of has its implementation of new and delete.
243// To make sure that C++ allocation/deallocation operators are overridden on
244// OS X we need to intercept them using their mangled names.
245#if !SANITIZER_APPLE
246
247INTERCEPTOR_ATTRIBUTE
248void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
249INTERCEPTOR_ATTRIBUTE
250void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
251INTERCEPTOR_ATTRIBUTE
252void *operator new(size_t size, std::nothrow_t const&)
253{ OPERATOR_NEW_BODY(true /*nothrow*/); }
254INTERCEPTOR_ATTRIBUTE
255void *operator new[](size_t size, std::nothrow_t const&)
256{ OPERATOR_NEW_BODY(true /*nothrow*/); }
257INTERCEPTOR_ATTRIBUTE
258void *operator new(size_t size, std::align_val_t align)
259{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
260INTERCEPTOR_ATTRIBUTE
261void *operator new[](size_t size, std::align_val_t align)
262{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
263INTERCEPTOR_ATTRIBUTE
264void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
265{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
266INTERCEPTOR_ATTRIBUTE
267void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
268{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
269
270INTERCEPTOR_ATTRIBUTE
271void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
272INTERCEPTOR_ATTRIBUTE
273void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
274INTERCEPTOR_ATTRIBUTE
275void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; }
276INTERCEPTOR_ATTRIBUTE
277void operator delete[](void *ptr, std::nothrow_t const &)
278{ OPERATOR_DELETE_BODY; }
279INTERCEPTOR_ATTRIBUTE
280void operator delete(void *ptr, size_t size) NOEXCEPT
281{ OPERATOR_DELETE_BODY; }
282INTERCEPTOR_ATTRIBUTE
283void operator delete[](void *ptr, size_t size) NOEXCEPT
284{ OPERATOR_DELETE_BODY; }
285INTERCEPTOR_ATTRIBUTE
286void operator delete(void *ptr, std::align_val_t) NOEXCEPT
287{ OPERATOR_DELETE_BODY; }
288INTERCEPTOR_ATTRIBUTE
289void operator delete[](void *ptr, std::align_val_t) NOEXCEPT
290{ OPERATOR_DELETE_BODY; }
291INTERCEPTOR_ATTRIBUTE
292void operator delete(void *ptr, std::align_val_t, std::nothrow_t const&)
293{ OPERATOR_DELETE_BODY; }
294INTERCEPTOR_ATTRIBUTE
295void operator delete[](void *ptr, std::align_val_t, std::nothrow_t const&)
296{ OPERATOR_DELETE_BODY; }
297INTERCEPTOR_ATTRIBUTE
298void operator delete(void *ptr, size_t size, std::align_val_t) NOEXCEPT
299{ OPERATOR_DELETE_BODY; }
300INTERCEPTOR_ATTRIBUTE
301void operator delete[](void *ptr, size_t size, std::align_val_t) NOEXCEPT
302{ OPERATOR_DELETE_BODY; }
303
304#else // SANITIZER_APPLE
305
306INTERCEPTOR(void *, _Znwm, size_t size)
307{ OPERATOR_NEW_BODY(false /*nothrow*/); }
308INTERCEPTOR(void *, _Znam, size_t size)
309{ OPERATOR_NEW_BODY(false /*nothrow*/); }
310INTERCEPTOR(void *, _ZnwmRKSt9nothrow_t, size_t size, std::nothrow_t const&)
311{ OPERATOR_NEW_BODY(true /*nothrow*/); }
312INTERCEPTOR(void *, _ZnamRKSt9nothrow_t, size_t size, std::nothrow_t const&)
313{ OPERATOR_NEW_BODY(true /*nothrow*/); }
314
315INTERCEPTOR(void, _ZdlPv, void *ptr)
316{ OPERATOR_DELETE_BODY; }
317INTERCEPTOR(void, _ZdaPv, void *ptr)
318{ OPERATOR_DELETE_BODY; }
319INTERCEPTOR(void, _ZdlPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
320{ OPERATOR_DELETE_BODY; }
321INTERCEPTOR(void, _ZdaPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
322{ OPERATOR_DELETE_BODY; }
323
324#endif // !SANITIZER_APPLE
325
326
327///// Thread initialization and finalization. /////
328
329#if !SANITIZER_NETBSD && !SANITIZER_FREEBSD && !SANITIZER_FUCHSIA
330static unsigned g_thread_finalize_key;
331
332static void thread_finalize(void *v) {
333 uptr iter = (uptr)v;
334 if (iter > 1) {
335 if (pthread_setspecific(key: g_thread_finalize_key, v: (void*)(iter - 1))) {
336 Report(format: "LeakSanitizer: failed to set thread key.\n");
337 Die();
338 }
339 return;
340 }
341 ThreadFinish();
342}
343#endif
344
345#if SANITIZER_NETBSD
346INTERCEPTOR(void, _lwp_exit) {
347 ENSURE_LSAN_INITED;
348 ThreadFinish();
349 REAL(_lwp_exit)();
350}
351#define LSAN_MAYBE_INTERCEPT__LWP_EXIT INTERCEPT_FUNCTION(_lwp_exit)
352#else
353#define LSAN_MAYBE_INTERCEPT__LWP_EXIT
354#endif
355
356#if SANITIZER_INTERCEPT_THR_EXIT
357INTERCEPTOR(void, thr_exit, tid_t *state) {
358 ENSURE_LSAN_INITED;
359 ThreadFinish();
360 REAL(thr_exit)(state);
361}
362#define LSAN_MAYBE_INTERCEPT_THR_EXIT INTERCEPT_FUNCTION(thr_exit)
363#else
364#define LSAN_MAYBE_INTERCEPT_THR_EXIT
365#endif
366
367#if SANITIZER_INTERCEPT___CXA_ATEXIT
368INTERCEPTOR(int, __cxa_atexit, void (*func)(void *), void *arg,
369 void *dso_handle) {
370 __lsan::ScopedInterceptorDisabler disabler;
371 return REAL(__cxa_atexit)(func, arg, dso_handle);
372}
373#define LSAN_MAYBE_INTERCEPT___CXA_ATEXIT INTERCEPT_FUNCTION(__cxa_atexit)
374#else
375#define LSAN_MAYBE_INTERCEPT___CXA_ATEXIT
376#endif
377
378#if SANITIZER_INTERCEPT_ATEXIT
379INTERCEPTOR(int, atexit, void (*f)()) {
380 __lsan::ScopedInterceptorDisabler disabler;
381 return REAL(__cxa_atexit)((void (*)(void *a))f, 0, 0);
382}
383#define LSAN_MAYBE_INTERCEPT_ATEXIT INTERCEPT_FUNCTION(atexit)
384#else
385#define LSAN_MAYBE_INTERCEPT_ATEXIT
386#endif
387
388#if SANITIZER_INTERCEPT_PTHREAD_ATFORK
389extern "C" {
390extern int _pthread_atfork(void (*prepare)(), void (*parent)(),
391 void (*child)());
392};
393
394INTERCEPTOR(int, pthread_atfork, void (*prepare)(), void (*parent)(),
395 void (*child)()) {
396 __lsan::ScopedInterceptorDisabler disabler;
397 // REAL(pthread_atfork) cannot be called due to symbol indirections at least
398 // on NetBSD
399 return _pthread_atfork(prepare, parent, child);
400}
401#define LSAN_MAYBE_INTERCEPT_PTHREAD_ATFORK INTERCEPT_FUNCTION(pthread_atfork)
402#else
403#define LSAN_MAYBE_INTERCEPT_PTHREAD_ATFORK
404#endif
405
406#if SANITIZER_INTERCEPT_STRERROR
407INTERCEPTOR(char *, strerror, int errnum) {
408 __lsan::ScopedInterceptorDisabler disabler;
409 return REAL(strerror)(errnum);
410}
411#define LSAN_MAYBE_INTERCEPT_STRERROR INTERCEPT_FUNCTION(strerror)
412#else
413#define LSAN_MAYBE_INTERCEPT_STRERROR
414#endif
415
416#if SANITIZER_POSIX
417
418template <bool Detached>
419static void *ThreadStartFunc(void *arg) {
420 u32 parent_tid = (uptr)arg;
421 uptr tid = ThreadCreate(tid: parent_tid, detached: Detached);
422 // Wait until the last iteration to maximize the chance that we are the last
423 // destructor to run.
424#if !SANITIZER_NETBSD && !SANITIZER_FREEBSD
425 if (pthread_setspecific(key: g_thread_finalize_key,
426 v: (void*)GetPthreadDestructorIterations())) {
427 Report(format: "LeakSanitizer: failed to set thread key.\n");
428 Die();
429 }
430# endif
431 ThreadStart(tid, os_id: GetTid());
432 auto self = GetThreadSelf();
433 auto args = GetThreadArgRetval().GetArgs(thread: self);
434 void *retval = (*args.routine)(args.arg_retval);
435 GetThreadArgRetval().Finish(thread: self, retval);
436 return retval;
437}
438
439INTERCEPTOR(int, pthread_create, void *th, void *attr,
440 void *(*callback)(void *), void *param) {
441 ENSURE_LSAN_INITED;
442 EnsureMainThreadIDIsCorrect();
443
444 bool detached = [attr]() {
445 int d = 0;
446 return attr && !pthread_attr_getdetachstate(attr, v: &d) && IsStateDetached(state: d);
447 }();
448
449 __sanitizer_pthread_attr_t myattr;
450 if (!attr) {
451 pthread_attr_init(attr: &myattr);
452 attr = &myattr;
453 }
454 AdjustStackSize(attr);
455 uptr this_tid = GetCurrentThreadId();
456 int result;
457 {
458 // Ignore all allocations made by pthread_create: thread stack/TLS may be
459 // stored by pthread for future reuse even after thread destruction, and
460 // the linked list it's stored in doesn't even hold valid pointers to the
461 // objects, the latter are calculated by obscure pointer arithmetic.
462 ScopedInterceptorDisabler disabler;
463 GetThreadArgRetval().Create(detached, args: {.routine: callback, .arg_retval: param}, fn: [&]() -> uptr {
464 result = REAL(pthread_create)(
465 th, attr, detached ? ThreadStartFunc<true> : ThreadStartFunc<false>,
466 (void *)this_tid);
467 return result ? 0 : *(uptr *)(th);
468 });
469 }
470 if (attr == &myattr)
471 pthread_attr_destroy(attr: &myattr);
472 return result;
473}
474
475INTERCEPTOR(int, pthread_join, void *thread, void **retval) {
476 int result;
477 GetThreadArgRetval().Join(thread: (uptr)thread, fn: [&]() {
478 result = REAL(pthread_join)(thread, retval);
479 return !result;
480 });
481 return result;
482}
483
484INTERCEPTOR(int, pthread_detach, void *thread) {
485 int result;
486 GetThreadArgRetval().Detach(thread: (uptr)thread, fn: [&]() {
487 result = REAL(pthread_detach)(thread);
488 return !result;
489 });
490 return result;
491}
492
493INTERCEPTOR(void, pthread_exit, void *retval) {
494 GetThreadArgRetval().Finish(thread: GetThreadSelf(), retval);
495 REAL(pthread_exit)(retval);
496}
497
498# if SANITIZER_INTERCEPT_TRYJOIN
499INTERCEPTOR(int, pthread_tryjoin_np, void *thread, void **ret) {
500 int result;
501 GetThreadArgRetval().Join(thread: (uptr)thread, fn: [&]() {
502 result = REAL(pthread_tryjoin_np)(thread, ret);
503 return !result;
504 });
505 return result;
506}
507# define LSAN_MAYBE_INTERCEPT_TRYJOIN INTERCEPT_FUNCTION(pthread_tryjoin_np)
508# else
509# define LSAN_MAYBE_INTERCEPT_TRYJOIN
510# endif // SANITIZER_INTERCEPT_TRYJOIN
511
512# if SANITIZER_INTERCEPT_TIMEDJOIN
513INTERCEPTOR(int, pthread_timedjoin_np, void *thread, void **ret,
514 const struct timespec *abstime) {
515 int result;
516 GetThreadArgRetval().Join(thread: (uptr)thread, fn: [&]() {
517 result = REAL(pthread_timedjoin_np)(thread, ret, abstime);
518 return !result;
519 });
520 return result;
521}
522# define LSAN_MAYBE_INTERCEPT_TIMEDJOIN \
523 INTERCEPT_FUNCTION(pthread_timedjoin_np)
524# else
525# define LSAN_MAYBE_INTERCEPT_TIMEDJOIN
526# endif // SANITIZER_INTERCEPT_TIMEDJOIN
527
528DEFINE_REAL_PTHREAD_FUNCTIONS
529
530INTERCEPTOR(void, _exit, int status) {
531 if (status == 0 && HasReportedLeaks()) status = common_flags()->exitcode;
532 REAL(_exit)(status);
533}
534
535#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
536#define SIGNAL_INTERCEPTOR_ENTER() ENSURE_LSAN_INITED
537#include "sanitizer_common/sanitizer_signal_interceptors.inc"
538
539#endif // SANITIZER_POSIX
540
541namespace __lsan {
542
543void InitializeInterceptors() {
544 // Fuchsia doesn't use interceptors that require any setup.
545#if !SANITIZER_FUCHSIA
546 __interception::DoesNotSupportStaticLinking();
547 InitializeSignalInterceptors();
548
549 INTERCEPT_FUNCTION(malloc);
550 INTERCEPT_FUNCTION(free);
551 LSAN_MAYBE_INTERCEPT_CFREE;
552 INTERCEPT_FUNCTION(calloc);
553 INTERCEPT_FUNCTION(realloc);
554 LSAN_MAYBE_INTERCEPT_MEMALIGN;
555 LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN;
556 LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC;
557 INTERCEPT_FUNCTION(posix_memalign);
558 INTERCEPT_FUNCTION(valloc);
559 LSAN_MAYBE_INTERCEPT_PVALLOC;
560 LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE;
561 LSAN_MAYBE_INTERCEPT_MALLINFO;
562 LSAN_MAYBE_INTERCEPT_MALLOPT;
563 INTERCEPT_FUNCTION(pthread_create);
564 INTERCEPT_FUNCTION(pthread_join);
565 INTERCEPT_FUNCTION(pthread_detach);
566 INTERCEPT_FUNCTION(pthread_exit);
567 LSAN_MAYBE_INTERCEPT_TIMEDJOIN;
568 LSAN_MAYBE_INTERCEPT_TRYJOIN;
569 INTERCEPT_FUNCTION(_exit);
570
571 LSAN_MAYBE_INTERCEPT__LWP_EXIT;
572 LSAN_MAYBE_INTERCEPT_THR_EXIT;
573
574 LSAN_MAYBE_INTERCEPT___CXA_ATEXIT;
575 LSAN_MAYBE_INTERCEPT_ATEXIT;
576 LSAN_MAYBE_INTERCEPT_PTHREAD_ATFORK;
577
578 LSAN_MAYBE_INTERCEPT_STRERROR;
579
580#if !SANITIZER_NETBSD && !SANITIZER_FREEBSD
581 if (pthread_key_create(key: &g_thread_finalize_key, destructor: &thread_finalize)) {
582 Report(format: "LeakSanitizer: failed to create thread key.\n");
583 Die();
584 }
585#endif
586
587#endif // !SANITIZER_FUCHSIA
588}
589
590} // namespace __lsan
591

source code of compiler-rt/lib/lsan/lsan_interceptors.cpp