| //===-- tsan_interceptors_linux.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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "interception/interception.h" |
| #include "sanitizer_common/sanitizer_atomic.h" |
| #include "sanitizer_common/sanitizer_libc.h" |
| #include "sanitizer_common/sanitizer_placement_new.h" |
| #include "tsan_rtl.h" |
| #include "tsan_interface.h" |
| #include "tsan_platform.h" |
| #include "tsan_mman.h" |
| |
| using namespace __tsan; // NOLINT |
| |
| const int kSigCount = 128; |
| |
| struct my_siginfo_t { |
| int opaque[128]; |
| }; |
| |
| struct sigset_t { |
| u64 val[1024 / 8 / sizeof(u64)]; |
| }; |
| |
| struct ucontext_t { |
| uptr opaque[117]; |
| }; |
| |
| 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 __cxa_atexit(void (*func)(void *arg), void *arg, void *dso); |
| extern "C" int *__errno_location(); |
| extern "C" int usleep(unsigned usec); |
| 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; |
| void *const MAP_FAILED = (void*)-1; |
| const int PTHREAD_BARRIER_SERIAL_THREAD = -1; |
| const int MAP_FIXED = 0x10; |
| typedef long long_t; // NOLINT |
| |
| typedef void (*sighandler_t)(int sig); |
| |
| #define errno (*__errno_location()) |
| |
| union pthread_attr_t { |
| char size[kPthreadAttrSize]; |
| void *align; |
| }; |
| |
| 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; |
| |
| static sigaction_t sigactions[kSigCount]; |
| |
| namespace __tsan { |
| struct SignalDesc { |
| bool armed; |
| bool sigaction; |
| my_siginfo_t siginfo; |
| ucontext_t ctx; |
| }; |
| |
| struct SignalContext { |
| int int_signal_send; |
| int pending_signal_count; |
| SignalDesc pending_signals[kSigCount]; |
| }; |
| } |
| |
| static SignalContext *SigCtx(ThreadState *thr) { |
| SignalContext *ctx = (SignalContext*)thr->signal_ctx; |
| if (ctx == 0 && thr->is_alive) { |
| ScopedInRtl in_rtl; |
| ctx = (SignalContext*)internal_alloc( |
| MBlockSignal, sizeof(*ctx)); |
| MemoryResetRange(thr, 0, (uptr)ctx, sizeof(*ctx)); |
| internal_memset(ctx, 0, sizeof(*ctx)); |
| thr->signal_ctx = ctx; |
| } |
| return ctx; |
| } |
| |
| static unsigned g_thread_finalize_key; |
| |
| static void process_pending_signals(ThreadState *thr); |
| |
| class ScopedInterceptor { |
| public: |
| 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() { |
| thr_->in_rtl--; |
| if (thr_->in_rtl == 0) { |
| FuncExit(thr_); |
| process_pending_signals(thr_); |
| } |
| CHECK_EQ(in_rtl_, thr_->in_rtl); |
| } |
| |
| private: |
| ThreadState *const thr_; |
| const int in_rtl_; |
| }; |
| |
| #define SCOPED_INTERCEPTOR_RAW(func, ...) \ |
| ThreadState *thr = cur_thread(); \ |
| StatInc(thr, StatInterceptor); \ |
| StatInc(thr, StatInt_##func); \ |
| ScopedInterceptor si(thr, #func, \ |
| (__sanitizer::uptr)__builtin_return_address(0)); \ |
| const uptr pc = (uptr)&func; \ |
| (void)pc; \ |
| /**/ |
| |
| #define SCOPED_TSAN_INTERCEPTOR(func, ...) \ |
| SCOPED_INTERCEPTOR_RAW(func, __VA_ARGS__); \ |
| if (thr->in_rtl > 1) \ |
| return REAL(func)(__VA_ARGS__); \ |
| /**/ |
| |
| #define SCOPED_INTERCEPTOR_LIBC(func, ...) \ |
| ThreadState *thr = cur_thread(); \ |
| StatInc(thr, StatInterceptor); \ |
| StatInc(thr, StatInt_##func); \ |
| ScopedInterceptor si(thr, #func, callpc); \ |
| const uptr pc = (uptr)&func; \ |
| (void)pc; \ |
| 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) |
| |
| // May be overriden by front-end. |
| extern "C" void WEAK __tsan_malloc_hook(void *ptr, uptr size) { |
| (void)ptr; |
| (void)size; |
| } |
| |
| extern "C" void WEAK __tsan_free_hook(void *ptr) { |
| (void)ptr; |
| } |
| |
| static void invoke_malloc_hook(void *ptr, uptr size) { |
| Context *ctx = CTX(); |
| ThreadState *thr = cur_thread(); |
| if (ctx == 0 || !ctx->initialized || thr->in_rtl) |
| return; |
| __tsan_malloc_hook(ptr, size); |
| } |
| |
| static void invoke_free_hook(void *ptr) { |
| Context *ctx = CTX(); |
| ThreadState *thr = cur_thread(); |
| if (ctx == 0 || !ctx->initialized || thr->in_rtl) |
| return; |
| __tsan_free_hook(ptr); |
| } |
| |
| class AtExitContext { |
| public: |
| AtExitContext() |
| : mtx_(MutexTypeAtExit, StatMtxAtExit) |
| , pos_() { |
| } |
| |
| typedef void(*atexit_t)(); |
| |
| int atexit(ThreadState *thr, uptr pc, atexit_t f) { |
| Lock l(&mtx_); |
| if (pos_ == kMaxAtExit) |
| return 1; |
| Release(thr, pc, (uptr)this); |
| stack_[pos_] = f; |
| pos_++; |
| return 0; |
| } |
| |
| void exit(ThreadState *thr, uptr pc) { |
| CHECK_EQ(thr->in_rtl, 0); |
| for (;;) { |
| atexit_t f = 0; |
| { |
| Lock l(&mtx_); |
| if (pos_) { |
| pos_--; |
| f = stack_[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); |
| f(); |
| } |
| } |
| |
| private: |
| static const int kMaxAtExit = 128; |
| Mutex mtx_; |
| atexit_t stack_[kMaxAtExit]; |
| int pos_; |
| }; |
| |
| static AtExitContext *atexit_ctx; |
| |
| static void finalize(void *arg) { |
| ThreadState * thr = cur_thread(); |
| uptr pc = 0; |
| atexit_ctx->exit(thr, pc); |
| { |
| ScopedInRtl in_rtl; |
| DestroyAndFree(atexit_ctx); |
| usleep(flags()->atexit_sleep_ms * 1000); |
| } |
| int status = Finalize(cur_thread()); |
| if (status) |
| _exit(status); |
| } |
| |
| TSAN_INTERCEPTOR(int, atexit, void (*f)()) { |
| SCOPED_TSAN_INTERCEPTOR(atexit, f); |
| return atexit_ctx->atexit(thr, pc, f); |
| return 0; |
| } |
| |
| TSAN_INTERCEPTOR(void, longjmp, void *env, int val) { |
| SCOPED_TSAN_INTERCEPTOR(longjmp, env, val); |
| TsanPrintf("ThreadSanitizer: longjmp() is not supported\n"); |
| Die(); |
| } |
| |
| TSAN_INTERCEPTOR(void, siglongjmp, void *env, int val) { |
| SCOPED_TSAN_INTERCEPTOR(siglongjmp, env, val); |
| TsanPrintf("ThreadSanitizer: siglongjmp() is not supported\n"); |
| Die(); |
| } |
| |
| static uptr fd2addr(int fd) { |
| (void)fd; |
| static u64 addr; |
| return (uptr)&addr; |
| } |
| |
| static uptr epollfd2addr(int fd) { |
| (void)fd; |
| static u64 addr; |
| return (uptr)&addr; |
| } |
| |
| static uptr file2addr(char *path) { |
| (void)path; |
| static u64 addr; |
| return (uptr)&addr; |
| } |
| |
| static uptr dir2addr(char *path) { |
| (void)path; |
| static u64 addr; |
| return (uptr)&addr; |
| } |
| |
| TSAN_INTERCEPTOR(void*, malloc, uptr 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*, calloc, uptr size, uptr n) { |
| void *p = 0; |
| { |
| SCOPED_INTERCEPTOR_RAW(calloc, size, n); |
| p = user_alloc(thr, pc, n * size); |
| internal_memset(p, 0, n * size); |
| } |
| invoke_malloc_hook(p, n * size); |
| return p; |
| } |
| |
| TSAN_INTERCEPTOR(void*, realloc, void *p, uptr 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; |
| invoke_free_hook(p); |
| SCOPED_INTERCEPTOR_RAW(free, p); |
| user_free(thr, pc, p); |
| } |
| |
| TSAN_INTERCEPTOR(void, cfree, void *p) { |
| if (p == 0) |
| return; |
| invoke_free_hook(p); |
| SCOPED_INTERCEPTOR_RAW(cfree, p); |
| user_free(thr, pc, p); |
| } |
| |
| 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(int, strcmp, const char *s1, const char *s2) { |
| SCOPED_TSAN_INTERCEPTOR(strcmp, s1, s2); |
| uptr len = 0; |
| for (; s1[len] && s2[len]; len++) { |
| if (s1[len] != s2[len]) |
| break; |
| } |
| MemoryAccessRange(thr, pc, (uptr)s1, len + 1, false); |
| MemoryAccessRange(thr, pc, (uptr)s2, len + 1, false); |
| return s1[len] - s2[len]; |
| } |
| |
| TSAN_INTERCEPTOR(int, strncmp, const char *s1, const char *s2, uptr n) { |
| SCOPED_TSAN_INTERCEPTOR(strncmp, s1, s2, n); |
| uptr len = 0; |
| for (; len < n && s1[len] && s2[len]; len++) { |
| if (s1[len] != 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 len == n ? 0 : s1[len] - s2[len]; |
| } |
| |
| 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) { |
| MemoryResetRange(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) { |
| MemoryResetRange(thr, pc, (uptr)res, sz); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(int, munmap, void *addr, long_t sz) { |
| SCOPED_TSAN_INTERCEPTOR(munmap, addr, sz); |
| int res = REAL(munmap)(addr, sz); |
| return res; |
| } |
| |
| #ifdef __LP64__ |
| |
| // void *operator new(size_t) |
| TSAN_INTERCEPTOR(void*, _Znwm, uptr sz) { |
| void *p = 0; |
| { |
| SCOPED_TSAN_INTERCEPTOR(_Znwm, sz); |
| p = user_alloc(thr, pc, sz); |
| } |
| invoke_malloc_hook(p, sz); |
| return p; |
| } |
| |
| // void *operator new(size_t, nothrow_t) |
| TSAN_INTERCEPTOR(void*, _ZnwmRKSt9nothrow_t, uptr sz) { |
| void *p = 0; |
| { |
| SCOPED_TSAN_INTERCEPTOR(_ZnwmRKSt9nothrow_t, sz); |
| p = user_alloc(thr, pc, sz); |
| } |
| invoke_malloc_hook(p, sz); |
| return p; |
| } |
| |
| // void *operator new[](size_t) |
| TSAN_INTERCEPTOR(void*, _Znam, uptr sz) { |
| void *p = 0; |
| { |
| SCOPED_TSAN_INTERCEPTOR(_Znam, sz); |
| p = user_alloc(thr, pc, sz); |
| } |
| invoke_malloc_hook(p, sz); |
| return p; |
| } |
| |
| // void *operator new[](size_t, nothrow_t) |
| TSAN_INTERCEPTOR(void*, _ZnamRKSt9nothrow_t, uptr sz) { |
| void *p = 0; |
| { |
| SCOPED_TSAN_INTERCEPTOR(_ZnamRKSt9nothrow_t, sz); |
| p = user_alloc(thr, pc, sz); |
| } |
| invoke_malloc_hook(p, sz); |
| return p; |
| } |
| |
| #else |
| #error "Not implemented" |
| #endif |
| |
| // void operator delete(void*) |
| TSAN_INTERCEPTOR(void, _ZdlPv, void *p) { |
| if (p == 0) |
| return; |
| invoke_free_hook(p); |
| SCOPED_TSAN_INTERCEPTOR(_ZdlPv, p); |
| user_free(thr, pc, p); |
| } |
| |
| // void operator delete(void*, nothrow_t) |
| TSAN_INTERCEPTOR(void, _ZdlPvRKSt9nothrow_t, void *p) { |
| if (p == 0) |
| return; |
| invoke_free_hook(p); |
| SCOPED_TSAN_INTERCEPTOR(_ZdlPvRKSt9nothrow_t, p); |
| user_free(thr, pc, p); |
| } |
| |
| // void operator delete[](void*) |
| TSAN_INTERCEPTOR(void, _ZdaPv, void *p) { |
| if (p == 0) |
| return; |
| invoke_free_hook(p); |
| SCOPED_TSAN_INTERCEPTOR(_ZdaPv, p); |
| user_free(thr, pc, p); |
| } |
| |
| // void operator delete[](void*, nothrow_t) |
| TSAN_INTERCEPTOR(void, _ZdaPvRKSt9nothrow_t, void *p) { |
| if (p == 0) |
| return; |
| invoke_free_hook(p); |
| SCOPED_TSAN_INTERCEPTOR(_ZdaPvRKSt9nothrow_t, p); |
| user_free(thr, pc, p); |
| } |
| |
| 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, kPageSize); |
| } |
| |
| TSAN_INTERCEPTOR(void*, pvalloc, uptr sz) { |
| SCOPED_TSAN_INTERCEPTOR(pvalloc, sz); |
| sz = RoundUp(sz, kPageSize); |
| return user_alloc(thr, pc, sz, kPageSize); |
| } |
| |
| 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. |
| TSAN_INTERCEPTOR(int, __cxa_guard_acquire, char *m) { |
| SCOPED_TSAN_INTERCEPTOR(__cxa_guard_acquire, m); |
| int res = REAL(__cxa_guard_acquire)(m); |
| if (res) { |
| // This thread does the init. |
| } else { |
| Acquire(thr, pc, (uptr)m); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(void, __cxa_guard_release, char *m) { |
| SCOPED_TSAN_INTERCEPTOR(__cxa_guard_release, m); |
| Release(thr, pc, (uptr)m); |
| REAL(__cxa_guard_release)(m); |
| } |
| |
| static void thread_finalize(void *v) { |
| uptr iter = (uptr)v; |
| if (iter > 1) { |
| if (pthread_setspecific(g_thread_finalize_key, (void*)(iter - 1))) { |
| TsanPrintf("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; |
| internal_free(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)) { |
| TsanPrintf("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); |
| 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); |
| pthread_attr_t myattr; |
| if (attr == 0) { |
| pthread_attr_init(&myattr); |
| attr = &myattr; |
| } |
| int detached = 0; |
| pthread_attr_getdetachstate(attr, &detached); |
| uptr stacksize = 0; |
| pthread_attr_getstacksize(attr, &stacksize); |
| // We place the huge ThreadState object into TLS, account for that. |
| const uptr minstacksize = GetTlsSize() + 128*1024; |
| if (stacksize < minstacksize) { |
| DPrintf("ThreadSanitizer: stacksize %zu->%zu\n", stacksize, minstacksize); |
| pthread_attr_setstacksize(attr, minstacksize); |
| } |
| 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 = 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; |
| } |
| |
| 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); |
| MemoryWrite1Byte(thr, pc, (uptr)b); |
| 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); |
| MemoryWrite1Byte(thr, pc, (uptr)b); |
| 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); |
| MemoryRead1Byte(thr, pc, (uptr)b); |
| int res = REAL(pthread_barrier_wait)(b); |
| MemoryRead1Byte(thr, pc, (uptr)b); |
| 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 = 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 = 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 = 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(long_t, read, int fd, void *buf, long_t sz) { |
| SCOPED_TSAN_INTERCEPTOR(read, fd, buf, sz); |
| int res = REAL(read)(fd, buf, sz); |
| if (res >= 0) { |
| Acquire(thr, pc, fd2addr(fd)); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, pread, int fd, void *buf, long_t sz, unsigned off) { |
| SCOPED_TSAN_INTERCEPTOR(pread, fd, buf, sz, off); |
| int res = REAL(pread)(fd, buf, sz, off); |
| if (res >= 0) { |
| Acquire(thr, pc, fd2addr(fd)); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, pread64, int fd, void *buf, long_t sz, u64 off) { |
| SCOPED_TSAN_INTERCEPTOR(pread64, fd, buf, sz, off); |
| int res = REAL(pread64)(fd, buf, sz, off); |
| if (res >= 0) { |
| Acquire(thr, pc, fd2addr(fd)); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, readv, int fd, void *vec, int cnt) { |
| SCOPED_TSAN_INTERCEPTOR(readv, fd, vec, cnt); |
| int res = REAL(readv)(fd, vec, cnt); |
| if (res >= 0) { |
| Acquire(thr, pc, fd2addr(fd)); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, preadv64, int fd, void *vec, int cnt, u64 off) { |
| SCOPED_TSAN_INTERCEPTOR(preadv64, fd, vec, cnt, off); |
| int res = REAL(preadv64)(fd, vec, cnt, off); |
| if (res >= 0) { |
| Acquire(thr, pc, fd2addr(fd)); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, write, int fd, void *buf, long_t sz) { |
| SCOPED_TSAN_INTERCEPTOR(write, fd, buf, sz); |
| Release(thr, pc, fd2addr(fd)); |
| int res = REAL(write)(fd, buf, sz); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, pwrite, int fd, void *buf, long_t sz, unsigned off) { |
| SCOPED_TSAN_INTERCEPTOR(pwrite, fd, buf, sz, off); |
| Release(thr, pc, fd2addr(fd)); |
| int res = REAL(pwrite)(fd, buf, sz, off); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, pwrite64, int fd, void *buf, long_t sz, u64 off) { |
| SCOPED_TSAN_INTERCEPTOR(pwrite64, fd, buf, sz, off); |
| Release(thr, pc, fd2addr(fd)); |
| int res = REAL(pwrite64)(fd, buf, sz, off); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, writev, int fd, void *vec, int cnt) { |
| SCOPED_TSAN_INTERCEPTOR(writev, fd, vec, cnt); |
| Release(thr, pc, fd2addr(fd)); |
| int res = REAL(writev)(fd, vec, cnt); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, pwritev64, int fd, void *vec, int cnt, u64 off) { |
| SCOPED_TSAN_INTERCEPTOR(pwritev64, fd, vec, cnt, off); |
| Release(thr, pc, fd2addr(fd)); |
| int res = REAL(pwritev64)(fd, vec, cnt, off); |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, send, int fd, void *buf, long_t len, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(send, fd, buf, len, flags); |
| Release(thr, pc, fd2addr(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); |
| Release(thr, pc, fd2addr(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) { |
| Acquire(thr, pc, fd2addr(fd)); |
| } |
| return res; |
| } |
| |
| TSAN_INTERCEPTOR(long_t, recvmsg, int fd, void *msg, int flags) { |
| SCOPED_TSAN_INTERCEPTOR(recvmsg, fd, msg, flags); |
| int res = REAL(recvmsg)(fd, msg, flags); |
| if (res >= 0) { |
| Acquire(thr, pc, fd2addr(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)); |
| return res; |
| } |
| |
| 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, 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); |
| 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) { |
| Release(thr, pc, epollfd2addr(epfd)); |
| } |
| int res = REAL(epoll_ctl)(epfd, op, fd, ev); |
| 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 = REAL(epoll_wait)(epfd, ev, cnt, timeout); |
| if (res > 0) { |
| Acquire(thr, pc, epollfd2addr(epfd)); |
| } |
| return res; |
| } |
| |
| static 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 || |
| (sctx && sig == sctx->int_signal_send)) { |
| CHECK(thr->in_rtl == 0 || 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, 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 == GetPid()) { |
| sctx->int_signal_send = sig; |
| } |
| int res = REAL(kill)(pid, sig); |
| if (pid == 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; |
| } |
| |
| static void process_pending_signals(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; |
| 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 (errno != 0) { |
| ScopedInRtl in_rtl; |
| StackTrace stack; |
| uptr pc = signal->sigaction ? |
| (uptr)sigactions[sig].sa_sigaction : |
| (uptr)sigactions[sig].sa_handler; |
| stack.Init(&pc, 1); |
| ScopedReport rep(ReportTypeErrnoInSignal); |
| rep.AddStack(&stack); |
| OutputReport(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; |
| } |
| |
| namespace __tsan { |
| |
| 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; |
| |
| TSAN_INTERCEPT(longjmp); |
| TSAN_INTERCEPT(siglongjmp); |
| |
| TSAN_INTERCEPT(malloc); |
| 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(_Znwm); |
| TSAN_INTERCEPT(_ZnwmRKSt9nothrow_t); |
| TSAN_INTERCEPT(_Znam); |
| TSAN_INTERCEPT(_ZnamRKSt9nothrow_t); |
| TSAN_INTERCEPT(_ZdlPv); |
| TSAN_INTERCEPT(_ZdlPvRKSt9nothrow_t); |
| TSAN_INTERCEPT(_ZdaPv); |
| TSAN_INTERCEPT(_ZdaPvRKSt9nothrow_t); |
| |
| TSAN_INTERCEPT(strlen); |
| TSAN_INTERCEPT(memset); |
| TSAN_INTERCEPT(memcpy); |
| TSAN_INTERCEPT(strcmp); |
| TSAN_INTERCEPT(memchr); |
| TSAN_INTERCEPT(memrchr); |
| TSAN_INTERCEPT(memmove); |
| TSAN_INTERCEPT(memcmp); |
| TSAN_INTERCEPT(strchr); |
| TSAN_INTERCEPT(strchrnul); |
| TSAN_INTERCEPT(strrchr); |
| TSAN_INTERCEPT(strncmp); |
| TSAN_INTERCEPT(strcpy); // NOLINT |
| TSAN_INTERCEPT(strncpy); |
| TSAN_INTERCEPT(strstr); |
| |
| TSAN_INTERCEPT(__cxa_guard_acquire); |
| TSAN_INTERCEPT(__cxa_guard_release); |
| |
| 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(read); |
| TSAN_INTERCEPT(pread); |
| TSAN_INTERCEPT(pread64); |
| TSAN_INTERCEPT(readv); |
| TSAN_INTERCEPT(preadv64); |
| TSAN_INTERCEPT(write); |
| TSAN_INTERCEPT(pwrite); |
| TSAN_INTERCEPT(pwrite64); |
| TSAN_INTERCEPT(writev); |
| TSAN_INTERCEPT(pwritev64); |
| TSAN_INTERCEPT(send); |
| TSAN_INTERCEPT(sendmsg); |
| TSAN_INTERCEPT(recv); |
| TSAN_INTERCEPT(recvmsg); |
| |
| TSAN_INTERCEPT(unlink); |
| TSAN_INTERCEPT(fopen); |
| TSAN_INTERCEPT(fread); |
| TSAN_INTERCEPT(fwrite); |
| TSAN_INTERCEPT(puts); |
| TSAN_INTERCEPT(rmdir); |
| TSAN_INTERCEPT(opendir); |
| |
| TSAN_INTERCEPT(epoll_ctl); |
| TSAN_INTERCEPT(epoll_wait); |
| |
| TSAN_INTERCEPT(sigaction); |
| TSAN_INTERCEPT(signal); |
| TSAN_INTERCEPT(raise); |
| TSAN_INTERCEPT(kill); |
| TSAN_INTERCEPT(pthread_kill); |
| |
| atexit_ctx = new(internal_alloc(MBlockAtExit, sizeof(AtExitContext))) |
| AtExitContext(); |
| |
| if (__cxa_atexit(&finalize, 0, 0)) { |
| TsanPrintf("ThreadSanitizer: failed to setup atexit callback\n"); |
| Die(); |
| } |
| |
| if (pthread_key_create(&g_thread_finalize_key, &thread_finalize)) { |
| TsanPrintf("ThreadSanitizer: failed to create thread key\n"); |
| Die(); |
| } |
| } |
| |
| 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 |