| //===-- tsan_interceptors.cc ----------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of ThreadSanitizer (TSan), a race detector. |
| // |
| // FIXME: move as many interceptors as possible into |
| // sanitizer_common/sanitizer_common_interceptors.inc |
| //===----------------------------------------------------------------------===// |
| |
| #include "sanitizer_common/sanitizer_atomic.h" |
| #include "sanitizer_common/sanitizer_libc.h" |
| #include "sanitizer_common/sanitizer_linux.h" |
| #include "sanitizer_common/sanitizer_platform_limits_posix.h" |
| #include "sanitizer_common/sanitizer_placement_new.h" |
| #include "sanitizer_common/sanitizer_stacktrace.h" |
| #include "interception/interception.h" |
| #include "tsan_interface.h" |
| #include "tsan_platform.h" |
| #include "tsan_rtl.h" |
| #include "tsan_mman.h" |
| #include "tsan_fd.h" |
| |
| using namespace __tsan; // NOLINT |
| |
| const int kSigCount = 64; |
| |
| struct my_siginfo_t { |
| // The size is determined by looking at sizeof of real siginfo_t on linux. |
| u64 opaque[128 / sizeof(u64)]; |
| }; |
| |
| struct sigset_t { |
| // The size is determined by looking at sizeof of real sigset_t on linux. |
| u64 val[128 / sizeof(u64)]; |
| }; |
| |
| struct ucontext_t { |
| // The size is determined by looking at sizeof of real ucontext_t on linux. |
| u64 opaque[936 / sizeof(u64) + 1]; |
| }; |
| |
| extern "C" int pthread_attr_init(void *attr); |
| extern "C" int pthread_attr_destroy(void *attr); |
| extern "C" int pthread_attr_getdetachstate(void *attr, int *v); |
| extern "C" int pthread_attr_setstacksize(void *attr, uptr stacksize); |
| extern "C" int pthread_attr_getstacksize(void *attr, uptr *stacksize); |
| extern "C" int pthread_key_create(unsigned *key, void (*destructor)(void* v)); |
| extern "C" int pthread_setspecific(unsigned key, const void *v); |
| extern "C" int pthread_mutexattr_gettype(void *a, int *type); |
| extern "C" int pthread_yield(); |
| extern "C" int pthread_sigmask(int how, const sigset_t *set, sigset_t *oldset); |
| extern "C" int sigfillset(sigset_t *set); |
| extern "C" void *pthread_self(); |
| extern "C" void _exit(int status); |
| extern "C" int *__errno_location(); |
| extern "C" int fileno_unlocked(void *stream); |
| extern "C" void *__libc_malloc(uptr size); |
| extern "C" void *__libc_calloc(uptr size, uptr n); |
| extern "C" void *__libc_realloc(void *ptr, uptr size); |
| extern "C" void __libc_free(void *ptr); |
| extern "C" int mallopt(int param, int value); |
| const int PTHREAD_MUTEX_RECURSIVE = 1; |
| const int PTHREAD_MUTEX_RECURSIVE_NP = 1; |
| const int kPthreadAttrSize = 56; |
| const int EINVAL = 22; |
| const int EBUSY = 16; |
| const int EPOLL_CTL_ADD = 1; |
| const int SIGILL = 4; |
| const int SIGABRT = 6; |
| const int SIGFPE = 8; |
| const int SIGSEGV = 11; |
| const int SIGPIPE = 13; |
| const int SIGBUS = 7; |
| const int SIGSYS = 31; |
| void *const MAP_FAILED = (void*)-1; |
| const int PTHREAD_BARRIER_SERIAL_THREAD = -1; |
| const int MAP_FIXED = 0x10; |
| typedef long long_t; // NOLINT |
| |
| // From /usr/include/unistd.h |
| # define F_ULOCK 0 /* Unlock a previously locked region. */ |
| # define F_LOCK 1 /* Lock a region for exclusive use. */ |
| # define F_TLOCK 2 /* Test and lock a region for exclusive use. */ |
| # define F_TEST 3 /* Test a region for other processes locks. */ |
| |
| typedef void (*sighandler_t)(int sig); |
| |
| #define errno (*__errno_location()) |
| |
| struct sigaction_t { |
| union { |
| sighandler_t sa_handler; |
| void (*sa_sigaction)(int sig, my_siginfo_t *siginfo, void *uctx); |
| }; |
| sigset_t sa_mask; |
| int sa_flags; |
| void (*sa_restorer)(); |
| }; |
| |
| const sighandler_t SIG_DFL = (sighandler_t)0; |
| const sighandler_t SIG_IGN = (sighandler_t)1; |
| const sighandler_t SIG_ERR = (sighandler_t)-1; |
| const int SA_SIGINFO = 4; |
| const int SIG_SETMASK = 2; |
| |
| namespace std { |
| struct nothrow_t {}; |
| } // namespace std |
| |
| static sigaction_t sigactions[kSigCount]; |
| |
| namespace __tsan { |
| struct SignalDesc { |
| bool armed; |
| bool sigaction; |
| my_siginfo_t siginfo; |
| ucontext_t ctx; |
| }; |
| |
| struct SignalContext { |
| int in_blocking_func; |
| int int_signal_send; |
| int pending_signal_count; |
| SignalDesc pending_signals[kSigCount]; |
| }; |
| } // namespace __tsan |
| |
| static SignalContext *SigCtx(ThreadState *thr) { |
| SignalContext *ctx = (SignalContext*)thr->signal_ctx; |
| if (ctx == 0 && thr->is_alive) { |
| ScopedInRtl in_rtl; |
| ctx = (SignalContext*)MmapOrDie(sizeof(*ctx), "SignalContext"); |
| MemoryResetRange(thr, (uptr)&SigCtx, (uptr)ctx, sizeof(*ctx)); |
| thr->signal_ctx = ctx; |
| } |
| return ctx; |
| } |
| |
| static unsigned g_thread_finalize_key; |
| |
| class ScopedInterceptor { |
| public: |
| ScopedInterceptor(ThreadState *thr, const char *fname, uptr pc); |
| ~ScopedInterceptor(); |
| private: |
| ThreadState *const thr_; |
| const int in_rtl_; |
| }; |
| |
| ScopedInterceptor::ScopedInterceptor(ThreadState *thr, const char *fname, |
| uptr pc) |
| : thr_(thr) |
| , in_rtl_(thr->in_rtl) { |
| if (thr_->in_rtl == 0) { |
| Initialize(thr); |
| FuncEntry(thr, pc); |
| thr_->in_rtl++; |
| DPrintf("#%d: intercept %s()\n", thr_->tid, fname); |
| } else { |
| thr_->in_rtl++; |
| } |
| } |
| |
| ScopedInterceptor::~ScopedInterceptor() { |
| thr_->in_rtl--; |
| if (thr_->in_rtl == 0) { |
| FuncExit(thr_); |
| ProcessPendingSignals(thr_); |
| } |
| CHECK_EQ(in_rtl_, thr_->in_rtl); |
| } |
| |
| #define SCOPED_INTERCEPTOR_RAW(func, ...) \ |
| ThreadState *thr = cur_thread(); \ |
| StatInc(thr, StatInterceptor); \ |
| StatInc(thr, StatInt_##func); \ |
| const uptr caller_pc = GET_CALLER_PC(); \ |
| ScopedInterceptor si(thr, #func, caller_pc); \ |
| const uptr pc = __sanitizer::StackTrace::GetCurrentPc(); \ |
| (void)pc; \ |
| /**/ |
| |
| #define SCOPED_TSAN_INTERCEPTOR(func, ...) \ |
| SCOPED_INTERCEPTOR_RAW(func, __VA_ARGS__); \ |
| if (REAL(func) == 0) { \ |
| Printf("FATAL: ThreadSanitizer: failed to intercept %s\n", #func); \ |
| Die(); \ |
| } \ |
| if (thr->in_rtl > 1) \ |
| return REAL(func)(__VA_ARGS__); \ |
| /**/ |
| |
| #define TSAN_INTERCEPTOR(ret, func, ...) INTERCEPTOR(ret, func, __VA_ARGS__) |
| #define TSAN_INTERCEPT(func) INTERCEPT_FUNCTION(func) |
| |
| #define BLOCK_REAL(name) (BlockingCall(thr), REAL(name)) |
| |
| struct BlockingCall { |
| explicit BlockingCall(ThreadState *thr) |
| : ctx(SigCtx(thr)) { |
| ctx->in_blocking_func++; |
| } |
| |
| ~BlockingCall() { |
| ctx->in_blocking_func--; |
| } |
| |
| SignalContext *ctx; |
| }; |
| |
| TSAN_INTERCEPTOR(unsigned, sleep, unsigned sec) { |
| SCOPED_TSAN_INTERCEPTOR(sleep, sec); |
| unsigned res = BLOCK_REAL(sleep)(sec); |
| AfterSleep(thr, pc); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, usleep, long_t usec) { |
| SCOPED_TSAN_INTERCEPTOR(usleep, usec); |
| int res = BLOCK_REAL(usleep)(usec); |
| AfterSleep(thr, pc); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, nanosleep, void *req, void *rem) { |
| SCOPED_TSAN_INTERCEPTOR(nanosleep, req, rem); |
| int res = BLOCK_REAL(nanosleep)(req, rem); |
| AfterSleep(thr, pc); |
| return res; |
| } |
| |
| class AtExitContext { |
| public: |
| AtExitContext() |
| : mtx_(MutexTypeAtExit, StatMtxAtExit) |
| , pos_() { |
| } |
| |
| typedef void(*atexit_t)(); |
| |
| int atexit(ThreadState *thr, uptr pc, bool is_on_exit, |
| atexit_t f, void *arg) { |
| Lock l(&mtx_); |
| if (pos_ == kMaxAtExit) |
| return 1; |
| Release(thr, pc, (uptr)this); |
| stack_[pos_] = f; |
| args_[pos_] = arg; |
| is_on_exits_[pos_] = is_on_exit; |
| pos_++; |
| return 0; |
| } |
| |
| void exit(ThreadState *thr, uptr pc) { |
| CHECK_EQ(thr->in_rtl, 0); |
| for (;;) { |
| atexit_t f = 0; |
| void *arg = 0; |
| bool is_on_exit = false; |
| { |
| Lock l(&mtx_); |
| if (pos_) { |
| pos_--; |
| f = stack_[pos_]; |
| arg = args_[pos_]; |
| is_on_exit = is_on_exits_[pos_]; |
| ScopedInRtl in_rtl; |
| Acquire(thr, pc, (uptr)this); |
| } |
| } |
| if (f == 0) |
| break; |
| DPrintf("#%d: executing atexit func %p\n", thr->tid, f); |
| CHECK_EQ(thr->in_rtl, 0); |
| if (is_on_exit) |
| ((void(*)(int status, void *arg))f)(0, arg); |
| else |
| ((void(*)(void *arg, void *dso))f)(arg, 0); |
| } |
| } |
| |
| private: |
| static const int kMaxAtExit = 128; |
| Mutex mtx_; |
| atexit_t stack_[kMaxAtExit]; |
| void *args_[kMaxAtExit]; |
| bool is_on_exits_[kMaxAtExit]; |
| int pos_; |
| }; |
| |
| static AtExitContext *atexit_ctx; |
| |
| TSAN_INTERCEPTOR(int, atexit, void (*f)()) { |
| if (cur_thread()->in_symbolizer) |
| return 0; |
| SCOPED_TSAN_INTERCEPTOR(atexit, f); |
| return atexit_ctx->atexit(thr, pc, false, (void(*)())f, 0); |
| } |
| |
| TSAN_INTERCEPTOR(int, on_exit, void(*f)(int, void*), void *arg) { |
| if (cur_thread()->in_symbolizer) |
| return 0; |
| SCOPED_TSAN_INTERCEPTOR(on_exit, f, arg); |
| return atexit_ctx->atexit(thr, pc, true, (void(*)())f, arg); |
| } |
| |
| TSAN_INTERCEPTOR(int, __cxa_atexit, void (*f)(void *a), void *arg, void *dso) { |
| if (cur_thread()->in_symbolizer) |
| return 0; |
| SCOPED_TSAN_INTERCEPTOR(__cxa_atexit, f, arg, dso); |
| if (dso) |
| return REAL(__cxa_atexit)(f, arg, dso); |
| return atexit_ctx->atexit(thr, pc, false, (void(*)())f, arg); |
| } |
| |
| // Cleanup old bufs. |
| static void JmpBufGarbageCollect(ThreadState *thr, uptr sp) { |
| for (uptr i = 0; i < thr->jmp_bufs.Size(); i++) { |
| JmpBuf *buf = &thr->jmp_bufs[i]; |
| if (buf->sp <= sp) { |
| uptr sz = thr->jmp_bufs.Size(); |
| thr->jmp_bufs[i] = thr->jmp_bufs[sz - 1]; |
| thr->jmp_bufs.PopBack(); |
| i--; |
| } |
| } |
| } |
| |
| static void SetJmp(ThreadState *thr, uptr sp, uptr mangled_sp) { |
| if (thr->shadow_stack_pos == 0) // called from libc guts during bootstrap |
| return; |
| // Cleanup old bufs. |
| JmpBufGarbageCollect(thr, sp); |
| // Remember the buf. |
| JmpBuf *buf = thr->jmp_bufs.PushBack(); |
| buf->sp = sp; |
| buf->mangled_sp = mangled_sp; |
| buf->shadow_stack_pos = thr->shadow_stack_pos; |
| } |
| |
| static void LongJmp(ThreadState *thr, uptr *env) { |
| uptr mangled_sp = env[6]; |
| // Find the saved buf by mangled_sp. |
| for (uptr i = 0; i < thr->jmp_bufs.Size(); i++) { |
| JmpBuf *buf = &thr->jmp_bufs[i]; |
| if (buf->mangled_sp == mangled_sp) { |
| CHECK_GE(thr->shadow_stack_pos, buf->shadow_stack_pos); |
| // Unwind the stack. |
| while (thr->shadow_stack_pos > buf->shadow_stack_pos) |
| FuncExit(thr); |
| JmpBufGarbageCollect(thr, buf->sp - 1); // do not collect buf->sp |
| return; |
| } |
| } |
| Printf("ThreadSanitizer: can't find longjmp buf\n"); |
| CHECK(0); |
| } |
| |
| extern "C" void __tsan_setjmp(uptr sp, uptr mangled_sp) { |
| ScopedInRtl in_rtl; |
| SetJmp(cur_thread(), sp, mangled_sp); |
| } |
| |
| // Not called. Merely to satisfy TSAN_INTERCEPT(). |
| extern "C" int __interceptor_setjmp(void *env) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| extern "C" int __interceptor_setjmp(void *env) { |
| CHECK(0); |
| return 0; |
| } |
| |
| extern "C" int __interceptor__setjmp(void *env) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| extern "C" int __interceptor__setjmp(void *env) { |
| CHECK(0); |
| return 0; |
| } |
| |
| extern "C" int __interceptor_sigsetjmp(void *env) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| extern "C" int __interceptor_sigsetjmp(void *env) { |
| CHECK(0); |
| return 0; |
| } |
| |
| extern "C" int __interceptor___sigsetjmp(void *env) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| extern "C" int __interceptor___sigsetjmp(void *env) { |
| CHECK(0); |
| return 0; |
| } |
| |
| extern "C" int setjmp(void *env); |
| extern "C" int _setjmp(void *env); |
| extern "C" int sigsetjmp(void *env); |
| extern "C" int __sigsetjmp(void *env); |
| DEFINE_REAL(int, setjmp, void *env) |
| DEFINE_REAL(int, _setjmp, void *env) |
| DEFINE_REAL(int, sigsetjmp, void *env) |
| DEFINE_REAL(int, __sigsetjmp, void *env) |
| |
| TSAN_INTERCEPTOR(void, longjmp, uptr *env, int val) { |
| { |
| SCOPED_TSAN_INTERCEPTOR(longjmp, env, val); |
| } |
| LongJmp(cur_thread(), env); |
| REAL(longjmp)(env, val); |
| } |
| |
| TSAN_INTERCEPTOR(void, siglongjmp, uptr *env, int val) { |
| { |
| SCOPED_TSAN_INTERCEPTOR(siglongjmp, env, val); |
| } |
| LongJmp(cur_thread(), env); |
| REAL(siglongjmp)(env, val); |
| } |
| |
| TSAN_INTERCEPTOR(void*, malloc, uptr size) { |
| if (cur_thread()->in_symbolizer) |
| return __libc_malloc(size); |
| void *p = 0; |
| { |
| SCOPED_INTERCEPTOR_RAW(malloc, size); |
| p = user_alloc(thr, pc, size); |
| } |
| invoke_malloc_hook(p, size); |
| return p; |
| } |
| |
| TSAN_INTERCEPTOR(void*, __libc_memalign, uptr align, uptr sz) { |
| SCOPED_TSAN_INTERCEPTOR(__libc_memalign, align, sz); |
| return user_alloc(thr, pc, sz, align); |
| } |
| |
| TSAN_INTERCEPTOR(void*, calloc, uptr size, uptr n) { |
| if (cur_thread()->in_symbolizer) |
| return __libc_calloc(size, n); |
| if (__sanitizer::CallocShouldReturnNullDueToOverflow(size, n)) return 0; |
| void *p = 0; |
| { |
| SCOPED_INTERCEPTOR_RAW(calloc, size, n); |
| p = user_alloc(thr, pc, n * size); |
| if (p) |
| internal_memset(p, 0, n * size); |
| } |
| invoke_malloc_hook(p, n * size); |
| return p; |
| } |
| |
| TSAN_INTERCEPTOR(void*, realloc, void *p, uptr size) { |
| if (cur_thread()->in_symbolizer) |
| return __libc_realloc(p, size); |
| if (p) |
| invoke_free_hook(p); |
| { |
| SCOPED_INTERCEPTOR_RAW(realloc, p, size); |
| p = user_realloc(thr, pc, p, size); |
| } |
| invoke_malloc_hook(p, size); |
| return p; |
| } |
| |
| TSAN_INTERCEPTOR(void, free, void *p) { |
| if (p == 0) |
| return; |
| if (cur_thread()->in_symbolizer) |
| return __libc_free(p); |
| invoke_free_hook(p); |
| SCOPED_INTERCEPTOR_RAW(free, p); |
| user_free(thr, pc, p); |
| } |
| |
| TSAN_INTERCEPTOR(void, cfree, void *p) { |
| if (p == 0) |
| return; |
| if (cur_thread()->in_symbolizer) |
| return __libc_free(p); |
| invoke_free_hook(p); |
| SCOPED_INTERCEPTOR_RAW(cfree, p); |
| user_free(thr, pc, p); |
| } |
| |
| TSAN_INTERCEPTOR(uptr, malloc_usable_size, void *p) { |
| SCOPED_INTERCEPTOR_RAW(malloc_usable_size, p); |
| return user_alloc_usable_size(thr, pc, p); |
| } |
| |
| #define OPERATOR_NEW_BODY(mangled_name) \ |
| if (cur_thread()->in_symbolizer) \ |
| return __libc_malloc(size); \ |
| void *p = 0; \ |
| { \ |
| SCOPED_INTERCEPTOR_RAW(mangled_name, size); \ |
| p = user_alloc(thr, pc, size); \ |
| } \ |
| invoke_malloc_hook(p, size); \ |
| return p; |
| |
| void *operator new(__sanitizer::uptr size) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void *operator new(__sanitizer::uptr size) { |
| OPERATOR_NEW_BODY(_Znwm); |
| } |
| |
| void *operator new[](__sanitizer::uptr size) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void *operator new[](__sanitizer::uptr size) { |
| OPERATOR_NEW_BODY(_Znam); |
| } |
| |
| void *operator new(__sanitizer::uptr size, std::nothrow_t const&) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void *operator new(__sanitizer::uptr size, std::nothrow_t const&) { |
| OPERATOR_NEW_BODY(_ZnwmRKSt9nothrow_t); |
| } |
| |
| void *operator new[](__sanitizer::uptr size, std::nothrow_t const&) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void *operator new[](__sanitizer::uptr size, std::nothrow_t const&) { |
| OPERATOR_NEW_BODY(_ZnamRKSt9nothrow_t); |
| } |
| |
| #define OPERATOR_DELETE_BODY(mangled_name) \ |
| if (ptr == 0) return; \ |
| if (cur_thread()->in_symbolizer) \ |
| return __libc_free(ptr); \ |
| invoke_free_hook(ptr); \ |
| SCOPED_INTERCEPTOR_RAW(mangled_name, ptr); \ |
| user_free(thr, pc, ptr); |
| |
| void operator delete(void *ptr) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void operator delete(void *ptr) { |
| OPERATOR_DELETE_BODY(_ZdlPv); |
| } |
| |
| void operator delete[](void *ptr) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void operator delete[](void *ptr) { |
| OPERATOR_DELETE_BODY(_ZdlPvRKSt9nothrow_t); |
| } |
| |
| void operator delete(void *ptr, std::nothrow_t const&) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void operator delete(void *ptr, std::nothrow_t const&) { |
| OPERATOR_DELETE_BODY(_ZdaPv); |
| } |
| |
| void operator delete[](void *ptr, std::nothrow_t const&) |
| SANITIZER_INTERFACE_ATTRIBUTE; |
| void operator delete[](void *ptr, std::nothrow_t const&) { |
| OPERATOR_DELETE_BODY(_ZdaPvRKSt9nothrow_t); |
| } |
| |
| TSAN_INTERCEPTOR(uptr, strlen, const char *s) { |
| SCOPED_TSAN_INTERCEPTOR(strlen, s); |
| uptr len = internal_strlen(s); |
| MemoryAccessRange(thr, pc, (uptr)s, len + 1, false); |
| return len; |
| } |
| |
| TSAN_INTERCEPTOR(void*, memset, void *dst, int v, uptr size) { |
| SCOPED_TSAN_INTERCEPTOR(memset, dst, v, size); |
| MemoryAccessRange(thr, pc, (uptr)dst, size, true); |
| return internal_memset(dst, v, size); |
| } |
| |
| TSAN_INTERCEPTOR(void*, memcpy, void *dst, const void *src, uptr size) { |
| SCOPED_TSAN_INTERCEPTOR(memcpy, dst, src, size); |
| MemoryAccessRange(thr, pc, (uptr)dst, size, true); |
| MemoryAccessRange(thr, pc, (uptr)src, size, false); |
| return internal_memcpy(dst, src, size); |
| } |
| |
| TSAN_INTERCEPTOR(int, memcmp, const void *s1, const void *s2, uptr n) { |
| SCOPED_TSAN_INTERCEPTOR(memcmp, s1, s2, n); |
| int res = 0; |
| uptr len = 0; |
| for (; len < n; len++) { |
| if ((res = ((unsigned char*)s1)[len] - ((unsigned char*)s2)[len])) |
| break; |
| } |
| MemoryAccessRange(thr, pc, (uptr)s1, len < n ? len + 1 : n, false); |
| MemoryAccessRange(thr, pc, (uptr)s2, len < n ? len + 1 : n, false); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, memchr, void *s, int c, uptr n) { |
| SCOPED_TSAN_INTERCEPTOR(memchr, s, c, n); |
| void *res = REAL(memchr)(s, c, n); |
| uptr len = res ? (char*)res - (char*)s + 1 : n; |
| MemoryAccessRange(thr, pc, (uptr)s, len, false); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, memrchr, char *s, int c, uptr n) { |
| SCOPED_TSAN_INTERCEPTOR(memrchr, s, c, n); |
| MemoryAccessRange(thr, pc, (uptr)s, n, false); |
| return REAL(memrchr)(s, c, n); |
| } |
| |
| TSAN_INTERCEPTOR(void*, memmove, void *dst, void *src, uptr n) { |
| SCOPED_TSAN_INTERCEPTOR(memmove, dst, src, n); |
| MemoryAccessRange(thr, pc, (uptr)dst, n, true); |
| MemoryAccessRange(thr, pc, (uptr)src, n, false); |
| return REAL(memmove)(dst, src, n); |
| } |
| |
| TSAN_INTERCEPTOR(char*, strchr, char *s, int c) { |
| SCOPED_TSAN_INTERCEPTOR(strchr, s, c); |
| char *res = REAL(strchr)(s, c); |
| uptr len = res ? (char*)res - (char*)s + 1 : internal_strlen(s) + 1; |
| MemoryAccessRange(thr, pc, (uptr)s, len, false); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(char*, strchrnul, char *s, int c) { |
| SCOPED_TSAN_INTERCEPTOR(strchrnul, s, c); |
| char *res = REAL(strchrnul)(s, c); |
| uptr len = (char*)res - (char*)s + 1; |
| MemoryAccessRange(thr, pc, (uptr)s, len, false); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(char*, strrchr, char *s, int c) { |
| SCOPED_TSAN_INTERCEPTOR(strrchr, s, c); |
| MemoryAccessRange(thr, pc, (uptr)s, internal_strlen(s) + 1, false); |
| return REAL(strrchr)(s, c); |
| } |
| |
| TSAN_INTERCEPTOR(char*, strcpy, char *dst, const char *src) { // NOLINT |
| SCOPED_TSAN_INTERCEPTOR(strcpy, dst, src); // NOLINT |
| uptr srclen = internal_strlen(src); |
| MemoryAccessRange(thr, pc, (uptr)dst, srclen + 1, true); |
| MemoryAccessRange(thr, pc, (uptr)src, srclen + 1, false); |
| return REAL(strcpy)(dst, src); // NOLINT |
| } |
| |
| TSAN_INTERCEPTOR(char*, strncpy, char *dst, char *src, uptr n) { |
| SCOPED_TSAN_INTERCEPTOR(strncpy, dst, src, n); |
| uptr srclen = internal_strnlen(src, n); |
| MemoryAccessRange(thr, pc, (uptr)dst, n, true); |
| MemoryAccessRange(thr, pc, (uptr)src, min(srclen + 1, n), false); |
| return REAL(strncpy)(dst, src, n); |
| } |
| |
| TSAN_INTERCEPTOR(const char*, strstr, const char *s1, const char *s2) { |
| SCOPED_TSAN_INTERCEPTOR(strstr, s1, s2); |
| const char *res = REAL(strstr)(s1, s2); |
| uptr len1 = internal_strlen(s1); |
| uptr len2 = internal_strlen(s2); |
| MemoryAccessRange(thr, pc, (uptr)s1, len1 + 1, false); |
| MemoryAccessRange(thr, pc, (uptr)s2, len2 + 1, false); |
| return res; |
| } |
| |
| static bool fix_mmap_addr(void **addr, long_t sz, int flags) { |
| if (*addr) { |
| if (!IsAppMem((uptr)*addr) || !IsAppMem((uptr)*addr + sz - 1)) { |
| if (flags & MAP_FIXED) { |
| errno = EINVAL; |
| return false; |
| } else { |
| *addr = 0; |
| } |
| } |
| } |
| return true; |
| } |
| |
| TSAN_INTERCEPTOR(void*, mmap, void *addr, long_t sz, int prot, |
| int flags, int fd, unsigned off) { |
| SCOPED_TSAN_INTERCEPTOR(mmap, addr, sz, prot, flags, fd, off); |
| if (!fix_mmap_addr(&addr, sz, flags)) |
| return MAP_FAILED; |
| void *res = REAL(mmap)(addr, sz, prot, flags, fd, off); |
| if (res != MAP_FAILED) { |
| if (fd > 0) |
| FdAccess(thr, pc, fd); |
| MemoryRangeImitateWrite(thr, pc, (uptr)res, sz); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, mmap64, void *addr, long_t sz, int prot, |
| int flags, int fd, u64 off) { |
| SCOPED_TSAN_INTERCEPTOR(mmap64, addr, sz, prot, flags, fd, off); |
| if (!fix_mmap_addr(&addr, sz, flags)) |
| return MAP_FAILED; |
| void *res = REAL(mmap64)(addr, sz, prot, flags, fd, off); |
| if (res != MAP_FAILED) { |
| if (fd > 0) |
| FdAccess(thr, pc, fd); |
| MemoryRangeImitateWrite(thr, pc, (uptr)res, sz); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, munmap, void *addr, long_t sz) { |
| SCOPED_TSAN_INTERCEPTOR(munmap, addr, sz); |
| DontNeedShadowFor((uptr)addr, sz); |
| int res = REAL(munmap)(addr, sz); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, memalign, uptr align, uptr sz) { |
| SCOPED_TSAN_INTERCEPTOR(memalign, align, sz); |
| return user_alloc(thr, pc, sz, align); |
| } |
| |
| TSAN_INTERCEPTOR(void*, valloc, uptr sz) { |
| SCOPED_TSAN_INTERCEPTOR(valloc, sz); |
| return user_alloc(thr, pc, sz, GetPageSizeCached()); |
| } |
| |
| TSAN_INTERCEPTOR(void*, pvalloc, uptr sz) { |
| SCOPED_TSAN_INTERCEPTOR(pvalloc, sz); |
| sz = RoundUp(sz, GetPageSizeCached()); |
| return user_alloc(thr, pc, sz, GetPageSizeCached()); |
| } |
| |
| TSAN_INTERCEPTOR(int, posix_memalign, void **memptr, uptr align, uptr sz) { |
| SCOPED_TSAN_INTERCEPTOR(posix_memalign, memptr, align, sz); |
| *memptr = user_alloc(thr, pc, sz, align); |
| return 0; |
| } |
| |
| // Used in thread-safe function static initialization. |
| extern "C" int INTERFACE_ATTRIBUTE __cxa_guard_acquire(atomic_uint32_t *g) { |
| SCOPED_INTERCEPTOR_RAW(__cxa_guard_acquire, g); |
| for (;;) { |
| u32 cmp = atomic_load(g, memory_order_acquire); |
| if (cmp == 0) { |
| if (atomic_compare_exchange_strong(g, &cmp, 1<<16, memory_order_relaxed)) |
| return 1; |
| } else if (cmp == 1) { |
| Acquire(thr, pc, (uptr)g); |
| return 0; |
| } else { |
| internal_sched_yield(); |
| } |
| } |
| } |
| |
| extern "C" void INTERFACE_ATTRIBUTE __cxa_guard_release(atomic_uint32_t *g) { |
| SCOPED_INTERCEPTOR_RAW(__cxa_guard_release, g); |
| Release(thr, pc, (uptr)g); |
| atomic_store(g, 1, memory_order_release); |
| } |
| |
| extern "C" void INTERFACE_ATTRIBUTE __cxa_guard_abort(atomic_uint32_t *g) { |
| SCOPED_INTERCEPTOR_RAW(__cxa_guard_abort, g); |
| atomic_store(g, 0, memory_order_relaxed); |
| } |
| |
| static void thread_finalize(void *v) { |
| uptr iter = (uptr)v; |
| if (iter > 1) { |
| if (pthread_setspecific(g_thread_finalize_key, (void*)(iter - 1))) { |
| Printf("ThreadSanitizer: failed to set thread key\n"); |
| Die(); |
| } |
| return; |
| } |
| { |
| ScopedInRtl in_rtl; |
| ThreadState *thr = cur_thread(); |
| ThreadFinish(thr); |
| SignalContext *sctx = thr->signal_ctx; |
| if (sctx) { |
| thr->signal_ctx = 0; |
| UnmapOrDie(sctx, sizeof(*sctx)); |
| } |
| } |
| } |
| |
| |
| struct ThreadParam { |
| void* (*callback)(void *arg); |
| void *param; |
| atomic_uintptr_t tid; |
| }; |
| |
| extern "C" void *__tsan_thread_start_func(void *arg) { |
| ThreadParam *p = (ThreadParam*)arg; |
| void* (*callback)(void *arg) = p->callback; |
| void *param = p->param; |
| int tid = 0; |
| { |
| ThreadState *thr = cur_thread(); |
| ScopedInRtl in_rtl; |
| if (pthread_setspecific(g_thread_finalize_key, (void*)4)) { |
| Printf("ThreadSanitizer: failed to set thread key\n"); |
| Die(); |
| } |
| while ((tid = atomic_load(&p->tid, memory_order_acquire)) == 0) |
| pthread_yield(); |
| atomic_store(&p->tid, 0, memory_order_release); |
| ThreadStart(thr, tid, GetTid()); |
| CHECK_EQ(thr->in_rtl, 1); |
| } |
| void *res = callback(param); |
| // Prevent the callback from being tail called, |
| // it mixes up stack traces. |
| volatile int foo = 42; |
| foo++; |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_create, |
| void *th, void *attr, void *(*callback)(void*), void * param) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_create, th, attr, callback, param); |
| __sanitizer_pthread_attr_t myattr; |
| if (attr == 0) { |
| pthread_attr_init(&myattr); |
| attr = &myattr; |
| } |
| int detached = 0; |
| pthread_attr_getdetachstate(attr, &detached); |
| |
| #if defined(TSAN_DEBUG_OUTPUT) |
| int verbosity = (TSAN_DEBUG_OUTPUT); |
| #else |
| int verbosity = 0; |
| #endif |
| AdjustStackSizeLinux(attr, verbosity); |
| |
| ThreadParam p; |
| p.callback = callback; |
| p.param = param; |
| atomic_store(&p.tid, 0, memory_order_relaxed); |
| int res = REAL(pthread_create)(th, attr, __tsan_thread_start_func, &p); |
| if (res == 0) { |
| int tid = ThreadCreate(thr, pc, *(uptr*)th, detached); |
| CHECK_NE(tid, 0); |
| atomic_store(&p.tid, tid, memory_order_release); |
| while (atomic_load(&p.tid, memory_order_acquire) != 0) |
| pthread_yield(); |
| } |
| if (attr == &myattr) |
| pthread_attr_destroy(&myattr); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_join, void *th, void **ret) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_join, th, ret); |
| int tid = ThreadTid(thr, pc, (uptr)th); |
| int res = BLOCK_REAL(pthread_join)(th, ret); |
| if (res == 0) { |
| ThreadJoin(thr, pc, tid); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_detach, void *th) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_detach, th); |
| int tid = ThreadTid(thr, pc, (uptr)th); |
| int res = REAL(pthread_detach)(th); |
| if (res == 0) { |
| ThreadDetach(thr, pc, tid); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_mutex_init, void *m, void *a) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_mutex_init, m, a); |
| int res = REAL(pthread_mutex_init)(m, a); |
| if (res == 0) { |
| bool recursive = false; |
| if (a) { |
| int type = 0; |
| if (pthread_mutexattr_gettype(a, &type) == 0) |
| recursive = (type == PTHREAD_MUTEX_RECURSIVE |
| || type == PTHREAD_MUTEX_RECURSIVE_NP); |
| } |
| MutexCreate(thr, pc, (uptr)m, false, recursive, false); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_mutex_destroy, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_mutex_destroy, m); |
| int res = REAL(pthread_mutex_destroy)(m); |
| if (res == 0 || res == EBUSY) { |
| MutexDestroy(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_mutex_lock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_mutex_lock, m); |
| int res = REAL(pthread_mutex_lock)(m); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_mutex_trylock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_mutex_trylock, m); |
| int res = REAL(pthread_mutex_trylock)(m); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_mutex_timedlock, void *m, void *abstime) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_mutex_timedlock, m, abstime); |
| int res = REAL(pthread_mutex_timedlock)(m, abstime); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_mutex_unlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_mutex_unlock, m); |
| MutexUnlock(thr, pc, (uptr)m); |
| int res = REAL(pthread_mutex_unlock)(m); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_spin_init, void *m, int pshared) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_spin_init, m, pshared); |
| int res = REAL(pthread_spin_init)(m, pshared); |
| if (res == 0) { |
| MutexCreate(thr, pc, (uptr)m, false, false, false); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_spin_destroy, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_spin_destroy, m); |
| int res = REAL(pthread_spin_destroy)(m); |
| if (res == 0) { |
| MutexDestroy(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_spin_lock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_spin_lock, m); |
| int res = REAL(pthread_spin_lock)(m); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_spin_trylock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_spin_trylock, m); |
| int res = REAL(pthread_spin_trylock)(m); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_spin_unlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_spin_unlock, m); |
| MutexUnlock(thr, pc, (uptr)m); |
| int res = REAL(pthread_spin_unlock)(m); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_init, void *m, void *a) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_init, m, a); |
| int res = REAL(pthread_rwlock_init)(m, a); |
| if (res == 0) { |
| MutexCreate(thr, pc, (uptr)m, true, false, false); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_destroy, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_destroy, m); |
| int res = REAL(pthread_rwlock_destroy)(m); |
| if (res == 0) { |
| MutexDestroy(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_rdlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_rdlock, m); |
| int res = REAL(pthread_rwlock_rdlock)(m); |
| if (res == 0) { |
| MutexReadLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_tryrdlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_tryrdlock, m); |
| int res = REAL(pthread_rwlock_tryrdlock)(m); |
| if (res == 0) { |
| MutexReadLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_timedrdlock, void *m, void *abstime) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_timedrdlock, m, abstime); |
| int res = REAL(pthread_rwlock_timedrdlock)(m, abstime); |
| if (res == 0) { |
| MutexReadLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_wrlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_wrlock, m); |
| int res = REAL(pthread_rwlock_wrlock)(m); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_trywrlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_trywrlock, m); |
| int res = REAL(pthread_rwlock_trywrlock)(m); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_timedwrlock, void *m, void *abstime) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_timedwrlock, m, abstime); |
| int res = REAL(pthread_rwlock_timedwrlock)(m, abstime); |
| if (res == 0) { |
| MutexLock(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_rwlock_unlock, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_rwlock_unlock, m); |
| MutexReadOrWriteUnlock(thr, pc, (uptr)m); |
| int res = REAL(pthread_rwlock_unlock)(m); |
| return res; |
| } |
| |
| // libpthread.so contains several versions of pthread_cond_init symbol. |
| // When we just dlsym() it, we get the wrong (old) version. |
| /* |
| TSAN_INTERCEPTOR(int, pthread_cond_init, void *c, void *a) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_cond_init, c, a); |
| int res = REAL(pthread_cond_init)(c, a); |
| return res; |
| } |
| */ |
| |
| TSAN_INTERCEPTOR(int, pthread_cond_destroy, void *c) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_cond_destroy, c); |
| int res = REAL(pthread_cond_destroy)(c); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_cond_signal, void *c) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_cond_signal, c); |
| int res = REAL(pthread_cond_signal)(c); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_cond_broadcast, void *c) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_cond_broadcast, c); |
| int res = REAL(pthread_cond_broadcast)(c); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_cond_wait, void *c, void *m) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_cond_wait, c, m); |
| MutexUnlock(thr, pc, (uptr)m); |
| int res = REAL(pthread_cond_wait)(c, m); |
| MutexLock(thr, pc, (uptr)m); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_cond_timedwait, void *c, void *m, void *abstime) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_cond_timedwait, c, m, abstime); |
| MutexUnlock(thr, pc, (uptr)m); |
| int res = REAL(pthread_cond_timedwait)(c, m, abstime); |
| MutexLock(thr, pc, (uptr)m); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_barrier_init, void *b, void *a, unsigned count) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_barrier_init, b, a, count); |
| MemoryWrite(thr, pc, (uptr)b, kSizeLog1); |
| int res = REAL(pthread_barrier_init)(b, a, count); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_barrier_destroy, void *b) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_barrier_destroy, b); |
| MemoryWrite(thr, pc, (uptr)b, kSizeLog1); |
| int res = REAL(pthread_barrier_destroy)(b); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_barrier_wait, void *b) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_barrier_wait, b); |
| Release(thr, pc, (uptr)b); |
| MemoryRead(thr, pc, (uptr)b, kSizeLog1); |
| int res = REAL(pthread_barrier_wait)(b); |
| MemoryRead(thr, pc, (uptr)b, kSizeLog1); |
| if (res == 0 || res == PTHREAD_BARRIER_SERIAL_THREAD) { |
| Acquire(thr, pc, (uptr)b); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_once, void *o, void (*f)()) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_once, o, f); |
| if (o == 0 || f == 0) |
| return EINVAL; |
| atomic_uint32_t *a = static_cast<atomic_uint32_t*>(o); |
| u32 v = atomic_load(a, memory_order_acquire); |
| if (v == 0 && atomic_compare_exchange_strong(a, &v, 1, |
| memory_order_relaxed)) { |
| const int old_in_rtl = thr->in_rtl; |
| thr->in_rtl = 0; |
| (*f)(); |
| CHECK_EQ(thr->in_rtl, 0); |
| thr->in_rtl = old_in_rtl; |
| Release(thr, pc, (uptr)o); |
| atomic_store(a, 2, memory_order_release); |
| } else { |
| while (v != 2) { |
| pthread_yield(); |
| v = atomic_load(a, memory_order_acquire); |
| } |
| Acquire(thr, pc, (uptr)o); |
| } |
| return 0; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_init, void *s, int pshared, unsigned value) { |
| SCOPED_TSAN_INTERCEPTOR(sem_init, s, pshared, value); |
| int res = REAL(sem_init)(s, pshared, value); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_destroy, void *s) { |
| SCOPED_TSAN_INTERCEPTOR(sem_destroy, s); |
| int res = REAL(sem_destroy)(s); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_wait, void *s) { |
| SCOPED_TSAN_INTERCEPTOR(sem_wait, s); |
| int res = BLOCK_REAL(sem_wait)(s); |
| if (res == 0) { |
| Acquire(thr, pc, (uptr)s); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_trywait, void *s) { |
| SCOPED_TSAN_INTERCEPTOR(sem_trywait, s); |
| int res = BLOCK_REAL(sem_trywait)(s); |
| if (res == 0) { |
| Acquire(thr, pc, (uptr)s); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_timedwait, void *s, void *abstime) { |
| SCOPED_TSAN_INTERCEPTOR(sem_timedwait, s, abstime); |
| int res = BLOCK_REAL(sem_timedwait)(s, abstime); |
| if (res == 0) { |
| Acquire(thr, pc, (uptr)s); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_post, void *s) { |
| SCOPED_TSAN_INTERCEPTOR(sem_post, s); |
| Release(thr, pc, (uptr)s); |
| int res = REAL(sem_post)(s); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, sem_getvalue, void *s, int *sval) { |
| SCOPED_TSAN_INTERCEPTOR(sem_getvalue, s, sval); |
| int res = REAL(sem_getvalue)(s, sval); |
| if (res == 0) { |
| Acquire(thr, pc, (uptr)s); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__xstat, version, path, buf); |
| return REAL(__xstat)(version, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, stat, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__xstat, 0, path, buf); |
| return REAL(__xstat)(0, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__xstat64, version, path, buf); |
| return REAL(__xstat64)(version, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, stat64, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__xstat64, 0, path, buf); |
| return REAL(__xstat64)(0, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__lxstat, version, path, buf); |
| return REAL(__lxstat)(version, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, lstat, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__lxstat, 0, path, buf); |
| return REAL(__lxstat)(0, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__lxstat64, version, path, buf); |
| return REAL(__lxstat64)(version, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, lstat64, const char *path, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__lxstat64, 0, path, buf); |
| return REAL(__lxstat64)(0, path, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, __fxstat, int version, int fd, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__fxstat, version, fd, buf); |
| if (fd > 0) |
| FdAccess(thr, pc, fd); |
| return REAL(__fxstat)(version, fd, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, fstat, int fd, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__fxstat, 0, fd, buf); |
| if (fd > 0) |
| FdAccess(thr, pc, fd); |
| return REAL(__fxstat)(0, fd, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, __fxstat64, int version, int fd, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__fxstat64, version, fd, buf); |
| if (fd > 0) |
| FdAccess(thr, pc, fd); |
| return REAL(__fxstat64)(version, fd, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, fstat64, int fd, void *buf) { |
| SCOPED_TSAN_INTERCEPTOR(__fxstat64, 0, fd, buf); |
| if (fd > 0) |
| FdAccess(thr, pc, fd); |
| return REAL(__fxstat64)(0, fd, buf); |
| } |
| |
| TSAN_INTERCEPTOR(int, open, const char *name, int flags, int mode) { |
| SCOPED_TSAN_INTERCEPTOR(open, name, flags, mode); |
| int fd = REAL(open)(name, flags, mode); |
| if (fd >= 0) |
| FdFileCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, open64, const char *name, int flags, int mode) { |
| SCOPED_TSAN_INTERCEPTOR(open64, name, flags, mode); |
| int fd = REAL(open64)(name, flags, mode); |
| if (fd >= 0) |
| FdFileCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, creat, const char *name, int mode) { |
| SCOPED_TSAN_INTERCEPTOR(creat, name, mode); |
| int fd = REAL(creat)(name, mode); |
| if (fd >= 0) |
| FdFileCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, creat64, const char *name, int mode) { |
| SCOPED_TSAN_INTERCEPTOR(creat64, name, mode); |
| int fd = REAL(creat64)(name, mode); |
| if (fd >= 0) |
| FdFileCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, dup, int oldfd) { |
| SCOPED_TSAN_INTERCEPTOR(dup, oldfd); |
| int newfd = REAL(dup)(oldfd); |
| if (oldfd >= 0 && newfd >= 0 && newfd != oldfd) |
| FdDup(thr, pc, oldfd, newfd); |
| return newfd; |
| } |
| |
| TSAN_INTERCEPTOR(int, dup2, int oldfd, int newfd) { |
| SCOPED_TSAN_INTERCEPTOR(dup2, oldfd, newfd); |
| int newfd2 = REAL(dup2)(oldfd, newfd); |
| if (oldfd >= 0 && newfd2 >= 0 && newfd2 != oldfd) |
| FdDup(thr, pc, oldfd, newfd2); |
| return newfd2; |
| } |
| |
| TSAN_INTERCEPTOR(int, dup3, int oldfd, int newfd, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(dup3, oldfd, newfd, flags); |
| int newfd2 = REAL(dup3)(oldfd, newfd, flags); |
| if (oldfd >= 0 && newfd2 >= 0 && newfd2 != oldfd) |
| FdDup(thr, pc, oldfd, newfd2); |
| return newfd2; |
| } |
| |
| TSAN_INTERCEPTOR(int, eventfd, unsigned initval, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(eventfd, initval, flags); |
| int fd = REAL(eventfd)(initval, flags); |
| if (fd >= 0) |
| FdEventCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, signalfd, int fd, void *mask, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(signalfd, fd, mask, flags); |
| if (fd >= 0) |
| FdClose(thr, pc, fd); |
| fd = REAL(signalfd)(fd, mask, flags); |
| if (fd >= 0) |
| FdSignalCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, inotify_init, int fake) { |
| SCOPED_TSAN_INTERCEPTOR(inotify_init, fake); |
| int fd = REAL(inotify_init)(fake); |
| if (fd >= 0) |
| FdInotifyCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, inotify_init1, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(inotify_init1, flags); |
| int fd = REAL(inotify_init1)(flags); |
| if (fd >= 0) |
| FdInotifyCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, socket, int domain, int type, int protocol) { |
| SCOPED_TSAN_INTERCEPTOR(socket, domain, type, protocol); |
| int fd = REAL(socket)(domain, type, protocol); |
| if (fd >= 0) |
| FdSocketCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, socketpair, int domain, int type, int protocol, int *fd) { |
| SCOPED_TSAN_INTERCEPTOR(socketpair, domain, type, protocol, fd); |
| int res = REAL(socketpair)(domain, type, protocol, fd); |
| if (res == 0 && fd[0] >= 0 && fd[1] >= 0) |
| FdPipeCreate(thr, pc, fd[0], fd[1]); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, connect, int fd, void *addr, unsigned addrlen) { |
| SCOPED_TSAN_INTERCEPTOR(connect, fd, addr, addrlen); |
| FdSocketConnecting(thr, pc, fd); |
| int res = REAL(connect)(fd, addr, addrlen); |
| if (res == 0 && fd >= 0) |
| FdSocketConnect(thr, pc, fd); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, bind, int fd, void *addr, unsigned addrlen) { |
| SCOPED_TSAN_INTERCEPTOR(bind, fd, addr, addrlen); |
| int res = REAL(bind)(fd, addr, addrlen); |
| if (fd > 0 && res == 0) |
| FdAccess(thr, pc, fd); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, listen, int fd, int backlog) { |
| SCOPED_TSAN_INTERCEPTOR(listen, fd, backlog); |
| int res = REAL(listen)(fd, backlog); |
| if (fd > 0 && res == 0) |
| FdAccess(thr, pc, fd); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, epoll_create, int size) { |
| SCOPED_TSAN_INTERCEPTOR(epoll_create, size); |
| int fd = REAL(epoll_create)(size); |
| if (fd >= 0) |
| FdPollCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, epoll_create1, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(epoll_create1, flags); |
| int fd = REAL(epoll_create1)(flags); |
| if (fd >= 0) |
| FdPollCreate(thr, pc, fd); |
| return fd; |
| } |
| |
| TSAN_INTERCEPTOR(int, close, int fd) { |
| SCOPED_TSAN_INTERCEPTOR(close, fd); |
| if (fd >= 0) |
| FdClose(thr, pc, fd); |
| return REAL(close)(fd); |
| } |
| |
| TSAN_INTERCEPTOR(int, __close, int fd) { |
| SCOPED_TSAN_INTERCEPTOR(__close, fd); |
| if (fd >= 0) |
| FdClose(thr, pc, fd); |
| return REAL(__close)(fd); |
| } |
| |
| // glibc guts |
| TSAN_INTERCEPTOR(void, __res_iclose, void *state, bool free_addr) { |
| SCOPED_TSAN_INTERCEPTOR(__res_iclose, state, free_addr); |
| int fds[64]; |
| int cnt = ExtractResolvFDs(state, fds, ARRAY_SIZE(fds)); |
| for (int i = 0; i < cnt; i++) { |
| if (fds[i] > 0) |
| FdClose(thr, pc, fds[i]); |
| } |
| REAL(__res_iclose)(state, free_addr); |
| } |
| |
| TSAN_INTERCEPTOR(int, pipe, int *pipefd) { |
| SCOPED_TSAN_INTERCEPTOR(pipe, pipefd); |
| int res = REAL(pipe)(pipefd); |
| if (res == 0 && pipefd[0] >= 0 && pipefd[1] >= 0) |
| FdPipeCreate(thr, pc, pipefd[0], pipefd[1]); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pipe2, int *pipefd, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(pipe2, pipefd, flags); |
| int res = REAL(pipe2)(pipefd, flags); |
| if (res == 0 && pipefd[0] >= 0 && pipefd[1] >= 0) |
| FdPipeCreate(thr, pc, pipefd[0], pipefd[1]); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, send, int fd, void *buf, long_t len, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(send, fd, buf, len, flags); |
| if (fd >= 0) |
| FdRelease(thr, pc, fd); |
| int res = REAL(send)(fd, buf, len, flags); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, sendmsg, int fd, void *msg, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(sendmsg, fd, msg, flags); |
| if (fd >= 0) |
| FdRelease(thr, pc, fd); |
| int res = REAL(sendmsg)(fd, msg, flags); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, recv, int fd, void *buf, long_t len, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(recv, fd, buf, len, flags); |
| int res = REAL(recv)(fd, buf, len, flags); |
| if (res >= 0 && fd >= 0) { |
| FdAcquire(thr, pc, fd); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, unlink, char *path) { |
| SCOPED_TSAN_INTERCEPTOR(unlink, path); |
| Release(thr, pc, File2addr(path)); |
| int res = REAL(unlink)(path); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, fopen, char *path, char *mode) { |
| SCOPED_TSAN_INTERCEPTOR(fopen, path, mode); |
| void *res = REAL(fopen)(path, mode); |
| Acquire(thr, pc, File2addr(path)); |
| if (res) { |
| int fd = fileno_unlocked(res); |
| if (fd >= 0) |
| FdFileCreate(thr, pc, fd); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, freopen, char *path, char *mode, void *stream) { |
| SCOPED_TSAN_INTERCEPTOR(freopen, path, mode, stream); |
| if (stream) { |
| int fd = fileno_unlocked(stream); |
| if (fd >= 0) |
| FdClose(thr, pc, fd); |
| } |
| void *res = REAL(freopen)(path, mode, stream); |
| Acquire(thr, pc, File2addr(path)); |
| if (res) { |
| int fd = fileno_unlocked(res); |
| if (fd >= 0) |
| FdFileCreate(thr, pc, fd); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, fclose, void *stream) { |
| { |
| SCOPED_TSAN_INTERCEPTOR(fclose, stream); |
| if (stream) { |
| int fd = fileno_unlocked(stream); |
| if (fd >= 0) |
| FdClose(thr, pc, fd); |
| } |
| } |
| return REAL(fclose)(stream); |
| } |
| |
| TSAN_INTERCEPTOR(uptr, fread, void *ptr, uptr size, uptr nmemb, void *f) { |
| { |
| SCOPED_TSAN_INTERCEPTOR(fread, ptr, size, nmemb, f); |
| MemoryAccessRange(thr, pc, (uptr)ptr, size * nmemb, true); |
| } |
| return REAL(fread)(ptr, size, nmemb, f); |
| } |
| |
| TSAN_INTERCEPTOR(uptr, fwrite, const void *p, uptr size, uptr nmemb, void *f) { |
| { |
| SCOPED_TSAN_INTERCEPTOR(fwrite, p, size, nmemb, f); |
| MemoryAccessRange(thr, pc, (uptr)p, size * nmemb, false); |
| } |
| return REAL(fwrite)(p, size, nmemb, f); |
| } |
| |
| TSAN_INTERCEPTOR(int, fflush, void *stream) { |
| SCOPED_TSAN_INTERCEPTOR(fflush, stream); |
| return REAL(fflush)(stream); |
| } |
| |
| TSAN_INTERCEPTOR(void, abort, int fake) { |
| SCOPED_TSAN_INTERCEPTOR(abort, fake); |
| REAL(fflush)(0); |
| REAL(abort)(fake); |
| } |
| |
| TSAN_INTERCEPTOR(int, puts, const char *s) { |
| SCOPED_TSAN_INTERCEPTOR(puts, s); |
| MemoryAccessRange(thr, pc, (uptr)s, internal_strlen(s), false); |
| return REAL(puts)(s); |
| } |
| |
| TSAN_INTERCEPTOR(int, rmdir, char *path) { |
| SCOPED_TSAN_INTERCEPTOR(rmdir, path); |
| Release(thr, pc, Dir2addr(path)); |
| int res = REAL(rmdir)(path); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void*, opendir, char *path) { |
| SCOPED_TSAN_INTERCEPTOR(opendir, path); |
| void *res = REAL(opendir)(path); |
| if (res != 0) |
| Acquire(thr, pc, Dir2addr(path)); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, epoll_ctl, int epfd, int op, int fd, void *ev) { |
| SCOPED_TSAN_INTERCEPTOR(epoll_ctl, epfd, op, fd, ev); |
| if (op == EPOLL_CTL_ADD && epfd >= 0) { |
| FdRelease(thr, pc, epfd); |
| } |
| int res = REAL(epoll_ctl)(epfd, op, fd, ev); |
| if (fd >= 0) |
| FdAccess(thr, pc, fd); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, epoll_wait, int epfd, void *ev, int cnt, int timeout) { |
| SCOPED_TSAN_INTERCEPTOR(epoll_wait, epfd, ev, cnt, timeout); |
| int res = BLOCK_REAL(epoll_wait)(epfd, ev, cnt, timeout); |
| if (res > 0 && epfd >= 0) { |
| FdAcquire(thr, pc, epfd); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, poll, void *fds, long_t nfds, int timeout) { |
| SCOPED_TSAN_INTERCEPTOR(poll, fds, nfds, timeout); |
| int res = BLOCK_REAL(poll)(fds, nfds, timeout); |
| return res; |
| } |
| |
| void ALWAYS_INLINE rtl_generic_sighandler(bool sigact, int sig, |
| my_siginfo_t *info, void *ctx) { |
| ThreadState *thr = cur_thread(); |
| SignalContext *sctx = SigCtx(thr); |
| // Don't mess with synchronous signals. |
| if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL || |
| sig == SIGABRT || sig == SIGFPE || sig == SIGPIPE || sig == SIGSYS || |
| // If we are sending signal to ourselves, we must process it now. |
| (sctx && sig == sctx->int_signal_send) || |
| // If we are in blocking function, we can safely process it now |
| // (but check if we are in a recursive interceptor, |
| // i.e. pthread_join()->munmap()). |
| (sctx && sctx->in_blocking_func == 1 && thr->in_rtl == 1)) { |
| int in_rtl = thr->in_rtl; |
| thr->in_rtl = 0; |
| CHECK_EQ(thr->in_signal_handler, false); |
| thr->in_signal_handler = true; |
| if (sigact) |
| sigactions[sig].sa_sigaction(sig, info, ctx); |
| else |
| sigactions[sig].sa_handler(sig); |
| CHECK_EQ(thr->in_signal_handler, true); |
| thr->in_signal_handler = false; |
| thr->in_rtl = in_rtl; |
| return; |
| } |
| |
| if (sctx == 0) |
| return; |
| SignalDesc *signal = &sctx->pending_signals[sig]; |
| if (signal->armed == false) { |
| signal->armed = true; |
| signal->sigaction = sigact; |
| if (info) |
| internal_memcpy(&signal->siginfo, info, sizeof(*info)); |
| if (ctx) |
| internal_memcpy(&signal->ctx, ctx, sizeof(signal->ctx)); |
| sctx->pending_signal_count++; |
| } |
| } |
| |
| static void rtl_sighandler(int sig) { |
| rtl_generic_sighandler(false, sig, 0, 0); |
| } |
| |
| static void rtl_sigaction(int sig, my_siginfo_t *info, void *ctx) { |
| rtl_generic_sighandler(true, sig, info, ctx); |
| } |
| |
| TSAN_INTERCEPTOR(int, sigaction, int sig, sigaction_t *act, sigaction_t *old) { |
| SCOPED_TSAN_INTERCEPTOR(sigaction, sig, act, old); |
| if (old) |
| internal_memcpy(old, &sigactions[sig], sizeof(*old)); |
| if (act == 0) |
| return 0; |
| internal_memcpy(&sigactions[sig], act, sizeof(*act)); |
| sigaction_t newact; |
| internal_memcpy(&newact, act, sizeof(newact)); |
| sigfillset(&newact.sa_mask); |
| if (act->sa_handler != SIG_IGN && act->sa_handler != SIG_DFL) { |
| if (newact.sa_flags & SA_SIGINFO) |
| newact.sa_sigaction = rtl_sigaction; |
| else |
| newact.sa_handler = rtl_sighandler; |
| } |
| int res = REAL(sigaction)(sig, &newact, 0); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(sighandler_t, signal, int sig, sighandler_t h) { |
| sigaction_t act; |
| act.sa_handler = h; |
| REAL(memset)(&act.sa_mask, -1, sizeof(act.sa_mask)); |
| act.sa_flags = 0; |
| sigaction_t old; |
| int res = sigaction(sig, &act, &old); |
| if (res) |
| return SIG_ERR; |
| return old.sa_handler; |
| } |
| |
| TSAN_INTERCEPTOR(int, sigsuspend, const sigset_t *mask) { |
| SCOPED_TSAN_INTERCEPTOR(sigsuspend, mask); |
| return REAL(sigsuspend)(mask); |
| } |
| |
| TSAN_INTERCEPTOR(int, raise, int sig) { |
| SCOPED_TSAN_INTERCEPTOR(raise, sig); |
| SignalContext *sctx = SigCtx(thr); |
| CHECK_NE(sctx, 0); |
| int prev = sctx->int_signal_send; |
| sctx->int_signal_send = sig; |
| int res = REAL(raise)(sig); |
| CHECK_EQ(sctx->int_signal_send, sig); |
| sctx->int_signal_send = prev; |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, kill, int pid, int sig) { |
| SCOPED_TSAN_INTERCEPTOR(kill, pid, sig); |
| SignalContext *sctx = SigCtx(thr); |
| CHECK_NE(sctx, 0); |
| int prev = sctx->int_signal_send; |
| if (pid == (int)internal_getpid()) { |
| sctx->int_signal_send = sig; |
| } |
| int res = REAL(kill)(pid, sig); |
| if (pid == (int)internal_getpid()) { |
| CHECK_EQ(sctx->int_signal_send, sig); |
| sctx->int_signal_send = prev; |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, pthread_kill, void *tid, int sig) { |
| SCOPED_TSAN_INTERCEPTOR(pthread_kill, tid, sig); |
| SignalContext *sctx = SigCtx(thr); |
| CHECK_NE(sctx, 0); |
| int prev = sctx->int_signal_send; |
| if (tid == pthread_self()) { |
| sctx->int_signal_send = sig; |
| } |
| int res = REAL(pthread_kill)(tid, sig); |
| if (tid == pthread_self()) { |
| CHECK_EQ(sctx->int_signal_send, sig); |
| sctx->int_signal_send = prev; |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, gettimeofday, void *tv, void *tz) { |
| SCOPED_TSAN_INTERCEPTOR(gettimeofday, tv, tz); |
| // It's intercepted merely to process pending signals. |
| return REAL(gettimeofday)(tv, tz); |
| } |
| |
| // Linux kernel has a bug that leads to kernel deadlock if a process |
| // maps TBs of memory and then calls mlock(). |
| static void MlockIsUnsupported() { |
| static atomic_uint8_t printed; |
| if (atomic_exchange(&printed, 1, memory_order_relaxed)) |
| return; |
| if (flags()->verbosity > 0) |
| Printf("INFO: ThreadSanitizer ignores mlock/mlockall/munlock/munlockall\n"); |
| } |
| |
| TSAN_INTERCEPTOR(int, mlock, const void *addr, uptr len) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| TSAN_INTERCEPTOR(int, munlock, const void *addr, uptr len) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| TSAN_INTERCEPTOR(int, mlockall, int flags) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| TSAN_INTERCEPTOR(int, munlockall, void) { |
| MlockIsUnsupported(); |
| return 0; |
| } |
| |
| TSAN_INTERCEPTOR(int, fork, int fake) { |
| SCOPED_TSAN_INTERCEPTOR(fork, fake); |
| // It's intercepted merely to process pending signals. |
| int pid = REAL(fork)(fake); |
| if (pid == 0) { |
| // child |
| FdOnFork(thr, pc); |
| } else if (pid > 0) { |
| // parent |
| } |
| return pid; |
| } |
| |
| struct TsanInterceptorContext { |
| ThreadState *thr; |
| const uptr caller_pc; |
| const uptr pc; |
| }; |
| |
| #include "sanitizer_common/sanitizer_platform_interceptors.h" |
| // Causes interceptor recursion (getpwuid_r() calls fopen()) |
| #undef SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS |
| #undef SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS |
| // Causes interceptor recursion (getaddrinfo() and fopen()) |
| #undef SANITIZER_INTERCEPT_GETADDRINFO |
| #undef SANITIZER_INTERCEPT_GETNAMEINFO |
| // Causes interceptor recursion (glob64() calls lstat64()) |
| #undef SANITIZER_INTERCEPT_GLOB |
| |
| #define COMMON_INTERCEPTOR_UNPOISON_PARAM(ctx, count) \ |
| do { \ |
| } while (false) |
| #define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \ |
| MemoryAccessRange(((TsanInterceptorContext *)ctx)->thr, \ |
| ((TsanInterceptorContext *)ctx)->pc, (uptr)ptr, size, \ |
| true) |
| #define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \ |
| MemoryAccessRange(((TsanInterceptorContext *) ctx)->thr, \ |
| ((TsanInterceptorContext *) ctx)->pc, (uptr) ptr, size, \ |
| false) |
| #define COMMON_INTERCEPTOR_ENTER(ctx, func, ...) \ |
| SCOPED_TSAN_INTERCEPTOR(func, __VA_ARGS__); \ |
| TsanInterceptorContext _ctx = {thr, caller_pc, pc}; \ |
| ctx = (void *)&_ctx; \ |
| (void) ctx; |
| #define COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd) \ |
| FdAcquire(((TsanInterceptorContext *) ctx)->thr, pc, fd) |
| #define COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd) \ |
| FdRelease(((TsanInterceptorContext *) ctx)->thr, pc, fd) |
| #define COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, newfd) \ |
| FdSocketAccept(((TsanInterceptorContext *) ctx)->thr, pc, fd, newfd) |
| #define COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, name) \ |
| ThreadSetName(((TsanInterceptorContext *) ctx)->thr, name) |
| #include "sanitizer_common/sanitizer_common_interceptors.inc" |
| |
| // FIXME: Implement these with MemoryAccessRange(). |
| #define COMMON_SYSCALL_PRE_READ_RANGE(p, s) |
| #define COMMON_SYSCALL_PRE_WRITE_RANGE(p, s) |
| #define COMMON_SYSCALL_POST_READ_RANGE(p, s) |
| #define COMMON_SYSCALL_POST_WRITE_RANGE(p, s) |
| #include "sanitizer_common/sanitizer_common_syscalls.inc" |
| |
| namespace __tsan { |
| |
| void ProcessPendingSignals(ThreadState *thr) { |
| CHECK_EQ(thr->in_rtl, 0); |
| SignalContext *sctx = SigCtx(thr); |
| if (sctx == 0 || sctx->pending_signal_count == 0 || thr->in_signal_handler) |
| return; |
| Context *ctx = CTX(); |
| thr->in_signal_handler = true; |
| sctx->pending_signal_count = 0; |
| // These are too big for stack. |
| static THREADLOCAL sigset_t emptyset, oldset; |
| sigfillset(&emptyset); |
| pthread_sigmask(SIG_SETMASK, &emptyset, &oldset); |
| for (int sig = 0; sig < kSigCount; sig++) { |
| SignalDesc *signal = &sctx->pending_signals[sig]; |
| if (signal->armed) { |
| signal->armed = false; |
| if (sigactions[sig].sa_handler != SIG_DFL |
| && sigactions[sig].sa_handler != SIG_IGN) { |
| // Insure that the handler does not spoil errno. |
| const int saved_errno = errno; |
| errno = 0; |
| if (signal->sigaction) |
| sigactions[sig].sa_sigaction(sig, &signal->siginfo, &signal->ctx); |
| else |
| sigactions[sig].sa_handler(sig); |
| if (flags()->report_bugs && errno != 0) { |
| ScopedInRtl in_rtl; |
| __tsan::StackTrace stack; |
| uptr pc = signal->sigaction ? |
| (uptr)sigactions[sig].sa_sigaction : |
| (uptr)sigactions[sig].sa_handler; |
| pc += 1; // return address is expected, OutputReport() will undo this |
| stack.Init(&pc, 1); |
| ThreadRegistryLock l(ctx->thread_registry); |
| ScopedReport rep(ReportTypeErrnoInSignal); |
| if (!IsFiredSuppression(ctx, rep, stack)) { |
| rep.AddStack(&stack); |
| OutputReport(ctx, rep, rep.GetReport()->stacks[0]); |
| } |
| } |
| errno = saved_errno; |
| } |
| } |
| } |
| pthread_sigmask(SIG_SETMASK, &oldset, 0); |
| CHECK_EQ(thr->in_signal_handler, true); |
| thr->in_signal_handler = false; |
| } |
| |
| static void finalize(void *arg) { |
| ThreadState * thr = cur_thread(); |
| uptr pc = 0; |
| atexit_ctx->exit(thr, pc); |
| int status = Finalize(cur_thread()); |
| REAL(fflush)(0); |
| if (status) |
| _exit(status); |
| } |
| |
| static void unreachable() { |
| Printf("FATAL: ThreadSanitizer: unreachable called\n"); |
| Die(); |
| } |
| |
| void InitializeInterceptors() { |
| CHECK_GT(cur_thread()->in_rtl, 0); |
| |
| // We need to setup it early, because functions like dlsym() can call it. |
| REAL(memset) = internal_memset; |
| REAL(memcpy) = internal_memcpy; |
| REAL(memcmp) = internal_memcmp; |
| |
| // Instruct libc malloc to consume less memory. |
| mallopt(1, 0); // M_MXFAST |
| mallopt(-3, 32*1024); // M_MMAP_THRESHOLD |
| |
| SANITIZER_COMMON_INTERCEPTORS_INIT; |
| |
| TSAN_INTERCEPT(setjmp); |
| TSAN_INTERCEPT(_setjmp); |
| TSAN_INTERCEPT(sigsetjmp); |
| TSAN_INTERCEPT(__sigsetjmp); |
| TSAN_INTERCEPT(longjmp); |
| TSAN_INTERCEPT(siglongjmp); |
| |
| TSAN_INTERCEPT(malloc); |
| TSAN_INTERCEPT(__libc_memalign); |
| TSAN_INTERCEPT(calloc); |
| TSAN_INTERCEPT(realloc); |
| TSAN_INTERCEPT(free); |
| TSAN_INTERCEPT(cfree); |
| TSAN_INTERCEPT(mmap); |
| TSAN_INTERCEPT(mmap64); |
| TSAN_INTERCEPT(munmap); |
| TSAN_INTERCEPT(memalign); |
| TSAN_INTERCEPT(valloc); |
| TSAN_INTERCEPT(pvalloc); |
| TSAN_INTERCEPT(posix_memalign); |
| |
| TSAN_INTERCEPT(strlen); |
| TSAN_INTERCEPT(memset); |
| TSAN_INTERCEPT(memcpy); |
| TSAN_INTERCEPT(memchr); |
| TSAN_INTERCEPT(memrchr); |
| TSAN_INTERCEPT(memmove); |
| TSAN_INTERCEPT(memcmp); |
| TSAN_INTERCEPT(strchr); |
| TSAN_INTERCEPT(strchrnul); |
| TSAN_INTERCEPT(strrchr); |
| TSAN_INTERCEPT(strcpy); // NOLINT |
| TSAN_INTERCEPT(strncpy); |
| TSAN_INTERCEPT(strstr); |
| |
| TSAN_INTERCEPT(pthread_create); |
| TSAN_INTERCEPT(pthread_join); |
| TSAN_INTERCEPT(pthread_detach); |
| |
| TSAN_INTERCEPT(pthread_mutex_init); |
| TSAN_INTERCEPT(pthread_mutex_destroy); |
| TSAN_INTERCEPT(pthread_mutex_lock); |
| TSAN_INTERCEPT(pthread_mutex_trylock); |
| TSAN_INTERCEPT(pthread_mutex_timedlock); |
| TSAN_INTERCEPT(pthread_mutex_unlock); |
| |
| TSAN_INTERCEPT(pthread_spin_init); |
| TSAN_INTERCEPT(pthread_spin_destroy); |
| TSAN_INTERCEPT(pthread_spin_lock); |
| TSAN_INTERCEPT(pthread_spin_trylock); |
| TSAN_INTERCEPT(pthread_spin_unlock); |
| |
| TSAN_INTERCEPT(pthread_rwlock_init); |
| TSAN_INTERCEPT(pthread_rwlock_destroy); |
| TSAN_INTERCEPT(pthread_rwlock_rdlock); |
| TSAN_INTERCEPT(pthread_rwlock_tryrdlock); |
| TSAN_INTERCEPT(pthread_rwlock_timedrdlock); |
| TSAN_INTERCEPT(pthread_rwlock_wrlock); |
| TSAN_INTERCEPT(pthread_rwlock_trywrlock); |
| TSAN_INTERCEPT(pthread_rwlock_timedwrlock); |
| TSAN_INTERCEPT(pthread_rwlock_unlock); |
| |
| // TSAN_INTERCEPT(pthread_cond_init); |
| TSAN_INTERCEPT(pthread_cond_destroy); |
| TSAN_INTERCEPT(pthread_cond_signal); |
| TSAN_INTERCEPT(pthread_cond_broadcast); |
| TSAN_INTERCEPT(pthread_cond_wait); |
| TSAN_INTERCEPT(pthread_cond_timedwait); |
| |
| TSAN_INTERCEPT(pthread_barrier_init); |
| TSAN_INTERCEPT(pthread_barrier_destroy); |
| TSAN_INTERCEPT(pthread_barrier_wait); |
| |
| TSAN_INTERCEPT(pthread_once); |
| |
| TSAN_INTERCEPT(sem_init); |
| TSAN_INTERCEPT(sem_destroy); |
| TSAN_INTERCEPT(sem_wait); |
| TSAN_INTERCEPT(sem_trywait); |
| TSAN_INTERCEPT(sem_timedwait); |
| TSAN_INTERCEPT(sem_post); |
| TSAN_INTERCEPT(sem_getvalue); |
| |
| TSAN_INTERCEPT(stat); |
| TSAN_INTERCEPT(__xstat); |
| TSAN_INTERCEPT(stat64); |
| TSAN_INTERCEPT(__xstat64); |
| TSAN_INTERCEPT(lstat); |
| TSAN_INTERCEPT(__lxstat); |
| TSAN_INTERCEPT(lstat64); |
| TSAN_INTERCEPT(__lxstat64); |
| TSAN_INTERCEPT(fstat); |
| TSAN_INTERCEPT(__fxstat); |
| TSAN_INTERCEPT(fstat64); |
| TSAN_INTERCEPT(__fxstat64); |
| TSAN_INTERCEPT(open); |
| TSAN_INTERCEPT(open64); |
| TSAN_INTERCEPT(creat); |
| TSAN_INTERCEPT(creat64); |
| TSAN_INTERCEPT(dup); |
| TSAN_INTERCEPT(dup2); |
| TSAN_INTERCEPT(dup3); |
| TSAN_INTERCEPT(eventfd); |
| TSAN_INTERCEPT(signalfd); |
| TSAN_INTERCEPT(inotify_init); |
| TSAN_INTERCEPT(inotify_init1); |
| TSAN_INTERCEPT(socket); |
| TSAN_INTERCEPT(socketpair); |
| TSAN_INTERCEPT(connect); |
| TSAN_INTERCEPT(bind); |
| TSAN_INTERCEPT(listen); |
| TSAN_INTERCEPT(epoll_create); |
| TSAN_INTERCEPT(epoll_create1); |
| TSAN_INTERCEPT(close); |
| TSAN_INTERCEPT(__close); |
| TSAN_INTERCEPT(__res_iclose); |
| TSAN_INTERCEPT(pipe); |
| TSAN_INTERCEPT(pipe2); |
| |
| TSAN_INTERCEPT(send); |
| TSAN_INTERCEPT(sendmsg); |
| TSAN_INTERCEPT(recv); |
| |
| TSAN_INTERCEPT(unlink); |
| TSAN_INTERCEPT(fopen); |
| TSAN_INTERCEPT(freopen); |
| TSAN_INTERCEPT(fclose); |
| TSAN_INTERCEPT(fread); |
| TSAN_INTERCEPT(fwrite); |
| TSAN_INTERCEPT(fflush); |
| TSAN_INTERCEPT(abort); |
| TSAN_INTERCEPT(puts); |
| TSAN_INTERCEPT(rmdir); |
| TSAN_INTERCEPT(opendir); |
| |
| TSAN_INTERCEPT(epoll_ctl); |
| TSAN_INTERCEPT(epoll_wait); |
| TSAN_INTERCEPT(poll); |
| |
| TSAN_INTERCEPT(sigaction); |
| TSAN_INTERCEPT(signal); |
| TSAN_INTERCEPT(sigsuspend); |
| TSAN_INTERCEPT(raise); |
| TSAN_INTERCEPT(kill); |
| TSAN_INTERCEPT(pthread_kill); |
| TSAN_INTERCEPT(sleep); |
| TSAN_INTERCEPT(usleep); |
| TSAN_INTERCEPT(nanosleep); |
| TSAN_INTERCEPT(gettimeofday); |
| |
| TSAN_INTERCEPT(mlock); |
| TSAN_INTERCEPT(munlock); |
| TSAN_INTERCEPT(mlockall); |
| TSAN_INTERCEPT(munlockall); |
| |
| TSAN_INTERCEPT(fork); |
| TSAN_INTERCEPT(on_exit); |
| TSAN_INTERCEPT(__cxa_atexit); |
| |
| // Need to setup it, because interceptors check that the function is resolved. |
| // But atexit is emitted directly into the module, so can't be resolved. |
| REAL(atexit) = (int(*)(void(*)()))unreachable; |
| atexit_ctx = new(internal_alloc(MBlockAtExit, sizeof(AtExitContext))) |
| AtExitContext(); |
| |
| if (REAL(__cxa_atexit)(&finalize, 0, 0)) { |
| Printf("ThreadSanitizer: failed to setup atexit callback\n"); |
| Die(); |
| } |
| |
| if (pthread_key_create(&g_thread_finalize_key, &thread_finalize)) { |
| Printf("ThreadSanitizer: failed to create thread key\n"); |
| Die(); |
| } |
| |
| FdInit(); |
| } |
| |
| void internal_start_thread(void(*func)(void *arg), void *arg) { |
| void *th; |
| REAL(pthread_create)(&th, 0, (void*(*)(void *arg))func, arg); |
| REAL(pthread_detach)(th); |
| } |
| |
| } // namespace __tsan |