[sanitizer] Move mmap interceptors into sanitizer_common

[vitalybuka]

clang-format

[devnexen]

Fine by me.

[devnexen]

General question of curiosity, do we need to be admins to be able to launch a build based on a diff ?

[vitalybuka]

In D44125#1028632, @devnexen wrote:

General question of curiosity, do we need to be admins to be able to launch a build based on a diff ?

What build are you talking about?

[devnexen]

In D44125#1028850, @vitalybuka wrote:

In D44125#1028632, @devnexen wrote:

General question of curiosity, do we need to be admins to be able to launch a build based on a diff ?

What build are you talking about?

Is it a builedbot ?
...
Build Status
Buildable 15701
Build 15701: arc lint + arc unit

[vitalybuka]

In D44125#1028853, @devnexen wrote:

In D44125#1028850, @vitalybuka wrote:

In D44125#1028632, @devnexen wrote:

General question of curiosity, do we need to be admins to be able to launch a build based on a diff ?

What build are you talking about?

Is it a builedbot ?
...
Build Status
Buildable 15701
Build 15701: arc lint + arc unit

Usually you don't need any login to trigger build on buildbot. Just put SVN revision into "Revision to build" and click build.
Also there is http://green.lab.llvm.org/green/, not sure if you can rebuild anything there.

[morehouse]

compiler-rt/lib/hwasan/hwasan_interceptors.cc

272

Aren't the above 3 lines handled by COMMON_INTERCEPTOR_ENTER?

472

Why does INTERCEPT_FUNCTION(mmap) stay here but not for other sanitizers?

compiler-rt/lib/msan/msan_interceptors.cc

979

Above 3 lines handled by COMMON_INTERCEPTOR_ENTER?

compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc

276

Purpose of if (0 && ... )?

compiler-rt/lib/tsan/rtl/tsan_interceptors.cc

2292

Looks like this is already called by COMMON_INTERCEPTOR_ENTER.

[vitalybuka]

addressed morehouse@ comments

[vitalybuka]

remove SCOPED_TSAN_INTERCEPTOR

[morehouse]

compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc

276

Does it make sense to condition this on common_flags()->intercept_intrin? Isn't that flag intended to affect only memset/memcpy/memmove?

277

Does it make sense to call COMMON_INTERCEPTOR_WRITE_RANGE at all? Doesn't mmap just create a mapping rather than writing to memory?

[vitalybuka]

No COMMON_INTERCEPTOR_WRITE_RANGE

compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc

277

sure, we don't need this.

[morehouse]

LGTM

[kubamracek]

Hi, this broke a Darwin bot: http://green.lab.llvm.org/green/job/clang-stage1-configure-RA/43370/console. Can you fix this so that we don't try to intercept mmap64 on Darwin?

[kubamracek]

Ok, I landed a fix in r326864.

[eugenis]

lib/sanitizer_common/sanitizer_common_interceptors.inc

6818 ↗

(On Diff #137290)

This should use OFF64_T.

OFF_T is 32-bit and we pick garbage from the stack as the higher half of the 64-bit offset. This affects linux-i386 with FILE_OFFSET_BITS set to 64.

[vitalybuka]

lib/sanitizer_common/sanitizer_common_interceptors.inc

6818 ↗

(On Diff #137290)

Thanks, fixed in r327596

compiler-rt/lib/esan/esan_interceptors.cpp

#define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg)                            \
   } while (false)
 #define COMMON_INTERCEPTOR_USER_CALLBACK_START()                               \
   do {                                                                         \
   } while (false)
 #define COMMON_INTERCEPTOR_USER_CALLBACK_END()                                 \
   do {                                                                         \
   } while (false)
 
+#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd,     \
+                                     off)                                      \
+  do {                                                                         \
+    if (!fixMmapAddr(&addr, sz, flags))                                        \
+      return (void *)-1;                                                       \
+    void *result = REAL(mmap)(addr, sz, prot, flags, fd, off);                 \
+    return (void *)checkMmapResult((uptr)result, sz);                          \
+  } while (false)
+
 #include "sanitizer_common/sanitizer_common_interceptors.inc"
 
 //===----------------------------------------------------------------------===//
 // Syscall interception
 //===----------------------------------------------------------------------===//
 
 // We want the caller's PC b/c unlike the other function interceptors these
 // are separate pre and post functions called around the app's syscall().

 INTERCEPTOR(int, rmdir, char *path) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, rmdir, path);
   COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0);
   return REAL(rmdir)(path);
 }
 
 //===----------------------------------------------------------------------===//
-// Shadow-related interceptors
-//===----------------------------------------------------------------------===//
-
-// These are candidates for sharing with all sanitizers if shadow memory
-// support is also standardized.
-
-INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags,
-                 int fd, OFF_T off) {
-  if (UNLIKELY(REAL(mmap) == nullptr)) {
-    // With esan init during interceptor init and a static libc preventing
-    // our early-calloc from triggering, we can end up here before our
-    // REAL pointer is set up.
-    return (void *)internal_mmap(addr, sz, prot, flags, fd, off);
-  }
-  void *ctx;
-  COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off);
-  if (!fixMmapAddr(&addr, sz, flags))
-    return (void *)-1;
-  void *result = REAL(mmap)(addr, sz, prot, flags, fd, off);
-  return (void *)checkMmapResult((uptr)result, sz);
-}
-
-#if SANITIZER_LINUX
-INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags,
-                 int fd, OFF64_T off) {
-  void *ctx;
-  COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off);
-  if (!fixMmapAddr(&addr, sz, flags))
-    return (void *)-1;
-  void *result = REAL(mmap64)(addr, sz, prot, flags, fd, off);
-  return (void *)checkMmapResult((uptr)result, sz);
-}
-#define ESAN_MAYBE_INTERCEPT_MMAP64 INTERCEPT_FUNCTION(mmap64)
-#else
-#define ESAN_MAYBE_INTERCEPT_MMAP64
-#endif
-
-//===----------------------------------------------------------------------===//
 // Signal-related interceptors
 //===----------------------------------------------------------------------===//
 
 #if SANITIZER_LINUX
 typedef void (*signal_handler_t)(int);
 INTERCEPTOR(signal_handler_t, signal, int signum, signal_handler_t handler) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, signal, signum, handler);
void initializeInterceptors() {
   INTERCEPT_FUNCTION(creat);
   ESAN_MAYBE_INTERCEPT_CREAT64;
   INTERCEPT_FUNCTION(unlink);
   INTERCEPT_FUNCTION(fread);
   INTERCEPT_FUNCTION(fwrite);
   INTERCEPT_FUNCTION(puts);
   INTERCEPT_FUNCTION(rmdir);
 
-  INTERCEPT_FUNCTION(mmap);
-  ESAN_MAYBE_INTERCEPT_MMAP64;
-
   ESAN_MAYBE_INTERCEPT_SIGNAL;
   ESAN_MAYBE_INTERCEPT_SIGACTION;
   ESAN_MAYBE_INTERCEPT_SIGPROCMASK;
   ESAN_MAYBE_INTERCEPT_PTHREAD_SIGMASK;
 
   INTERCEPT_FUNCTION(calloc);
   INTERCEPT_FUNCTION(malloc);
   INTERCEPT_FUNCTION(free);

compiler-rt/lib/hwasan/hwasan_interceptors.cc

 INTERCEPTOR(void *, malloc, SIZE_T size) {
   GET_MALLOC_STACK_TRACE;
   if (UNLIKELY(!hwasan_inited))
     // Hack: dlsym calls malloc before REAL(malloc) is retrieved from dlsym.
     return AllocateFromLocalPool(size);
   return hwasan_malloc(size, &stack);
 }
 
-
-INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags,
-            int fd, OFF_T offset) {
+template <class Mmap>
+static void *mmap_interceptor(Mmap real_mmap, void *addr, SIZE_T sz, int prot,
+                              int flags, int fd, OFF64_T off) {
   if (hwasan_init_is_running)
-    return REAL(mmap)(addr, length, prot, flags, fd, offset);
-  ENSURE_HWASAN_INITED();
-  if (addr && !MEM_IS_APP(addr)) {
-    if (flags & map_fixed) {
-      errno = errno_EINVAL;
-      return (void *)-1;
-    } else {
-      addr = nullptr;
-    }
-  }
-  void *res = REAL(mmap)(addr, length, prot, flags, fd, offset);
-  return res;
-}
-
-#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
-INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags,
-            int fd, OFF64_T offset) {
+    return real_mmap(addr, length, prot, flags, fd, offset);
   ENSURE_HWASAN_INITED();
   if (addr && !MEM_IS_APP(addr)) {
     if (flags & map_fixed) {
       errno = errno_EINVAL;
       return (void *)-1;
     } else {
       addr = nullptr;
     }
   }
-  void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset);
-  return res;
+  return real_mmap(addr, length, prot, flags, fd, offset);
 }
-#define HWASAN_MAYBE_INTERCEPT_MMAP64 INTERCEPT_FUNCTION(mmap64)
-#else
-#define HWASAN_MAYBE_INTERCEPT_MMAP64
-#endif
 
 extern "C" int pthread_attr_init(void *attr);
 extern "C" int pthread_attr_destroy(void *attr);
 
 static void *HwasanThreadStartFunc(void *arg) {
   HwasanThread *t = (HwasanThread *)arg;
   SetCurrentThread(t);
   return t->ThreadStart();
#define COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, dst, v, size) \
   {                                                       \
     COMMON_INTERCEPTOR_ENTER(ctx, memset, dst, v, size);  \
     if (common_flags()->intercept_intrin &&               \
         MEM_IS_APP(GetAddressFromPointer(dst)))           \
       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size);     \
     return REAL(memset)(dst, v, size);                    \
   }
 
+#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, length, prot, flags, fd, \
+                                     offset)                                   \
+  do {                                                                         \
+    return mmap_interceptor(REAL(mmap), addr, length, prot, flags, fd,         \
+                            offset);                                           \
+  } while (false)
+
 #include "sanitizer_common/sanitizer_platform_interceptors.h"
 #include "sanitizer_common/sanitizer_common_interceptors.inc"
 #include "sanitizer_common/sanitizer_signal_interceptors.inc"
 
 #define COMMON_SYSCALL_PRE_READ_RANGE(p, s) CHECK_UNPOISONED(p, s)
 #define COMMON_SYSCALL_PRE_WRITE_RANGE(p, s) \
   do {                                       \
     (void)(p);                               \

 namespace __hwasan {
 
 void InitializeInterceptors() {
   static int inited = 0;
   CHECK_EQ(inited, 0);
   InitializeCommonInterceptors();
   InitializeSignalInterceptors();
 
   INTERCEPT_FUNCTION(mmap);
-  HWASAN_MAYBE_INTERCEPT_MMAP64;
   INTERCEPT_FUNCTION(posix_memalign);
   HWASAN_MAYBE_INTERCEPT_MEMALIGN;
   INTERCEPT_FUNCTION(__libc_memalign);
   INTERCEPT_FUNCTION(valloc);
   HWASAN_MAYBE_INTERCEPT_PVALLOC;
   INTERCEPT_FUNCTION(malloc);
   INTERCEPT_FUNCTION(calloc);
   INTERCEPT_FUNCTION(realloc);

compiler-rt/lib/msan/msan_interceptors.cc

 void __sanitizer_dtor_callback(const void *data, uptr size) {
   GET_MALLOC_STACK_TRACE;
   if (flags()->poison_in_dtor) {
     stack.tag = STACK_TRACE_TAG_POISON;
     PoisonMemory(data, size, &stack);
   }
 }
 
-INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags,
-            int fd, OFF_T offset) {
+template <class Mmap>
+static void *mmap_interceptor(Mmap real_mmap, void *addr, SIZE_T length,
+                              int prot, int flags, int fd, OFF64_T offset) {
   if (msan_init_is_running)
-    return REAL(mmap)(addr, length, prot, flags, fd, offset);
+    return real_mmap(addr, length, prot, flags, fd, offset);
   ENSURE_MSAN_INITED();
   if (addr && !MEM_IS_APP(addr)) {
     if (flags & map_fixed) {
       errno = errno_EINVAL;
       return (void *)-1;
     } else {
       addr = nullptr;
     }
   }
-  void *res = REAL(mmap)(addr, length, prot, flags, fd, offset);
-  if (res != (void*)-1)
-    __msan_unpoison(res, RoundUpTo(length, GetPageSize()));
+  void *res = real_mmap(addr, length, prot, flags, fd, offset);
+  if (res != (void *)-1) __msan_unpoison(res, RoundUpTo(length, GetPageSize()));
   return res;
 }
 
-#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
-INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags,
-            int fd, OFF64_T offset) {
-  ENSURE_MSAN_INITED();
-  if (addr && !MEM_IS_APP(addr)) {
-    if (flags & map_fixed) {
-      errno = errno_EINVAL;
-      return (void *)-1;
-    } else {
-      addr = nullptr;
-    }
-  }
-  void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset);
-  if (res != (void*)-1)
-    __msan_unpoison(res, RoundUpTo(length, GetPageSize()));
-  return res;
-}
-#define MSAN_MAYBE_INTERCEPT_MMAP64 INTERCEPT_FUNCTION(mmap64)
-#else
-#define MSAN_MAYBE_INTERCEPT_MMAP64
-#endif
-
 INTERCEPTOR(int, getrusage, int who, void *usage) {
   ENSURE_MSAN_INITED();
   int res = REAL(getrusage)(who, usage);
   if (res == 0) {
     __msan_unpoison(usage, __sanitizer::struct_rusage_sz);
   }
   return res;
 }

 
 #define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) \
   do {                                                      \
     GET_STORE_STACK_TRACE;                                  \
     CopyShadowAndOrigin(to, from, size, &stack);            \
     __msan_unpoison(to + size, 1);                          \
   } while (false)
 
+#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, length, prot, flags, fd, \
+                                     offset)                                   \
+  do {                                                                         \
+    return mmap_interceptor(REAL(mmap), addr, sz, prot, flags, fd, off);       \
+  } while (false)
+
 #include "sanitizer_common/sanitizer_platform_interceptors.h"
 #include "sanitizer_common/sanitizer_common_interceptors.inc"
 
 static uptr signal_impl(int signo, uptr cb);
 static int sigaction_impl(int signo, const __sanitizer_sigaction *act,
                           __sanitizer_sigaction *oldact);
 
 #define SIGNAL_INTERCEPTOR_SIGACTION_IMPL(signo, act, oldact) \

 namespace __msan {
 
 void InitializeInterceptors() {
   static int inited = 0;
   CHECK_EQ(inited, 0);
   InitializeCommonInterceptors();
   InitializeSignalInterceptors();
 
-  INTERCEPT_FUNCTION(mmap);
-  MSAN_MAYBE_INTERCEPT_MMAP64;
   INTERCEPT_FUNCTION(posix_memalign);
   MSAN_MAYBE_INTERCEPT_MEMALIGN;
   MSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN;
   INTERCEPT_FUNCTION(valloc);
   MSAN_MAYBE_INTERCEPT_PVALLOC;
   INTERCEPT_FUNCTION(malloc);
   INTERCEPT_FUNCTION(calloc);
   INTERCEPT_FUNCTION(realloc);

compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc

 //   COMMON_INTERCEPTOR_MUTEX_UNLOCK
 //   COMMON_INTERCEPTOR_MUTEX_REPAIR
 //   COMMON_INTERCEPTOR_SET_PTHREAD_NAME
 //   COMMON_INTERCEPTOR_HANDLE_RECVMSG
 //   COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED
 //   COMMON_INTERCEPTOR_MEMSET_IMPL
 //   COMMON_INTERCEPTOR_MEMMOVE_IMPL
 //   COMMON_INTERCEPTOR_MEMCPY_IMPL
+//   COMMON_INTERCEPTOR_MMAP_IMPL
 //   COMMON_INTERCEPTOR_COPY_STRING
 //   COMMON_INTERCEPTOR_STRNDUP_IMPL
 //===----------------------------------------------------------------------===//
 
 #include "interception/interception.h"
 #include "sanitizer_addrhashmap.h"
 #include "sanitizer_errno.h"
 #include "sanitizer_placement_new.h"
#define COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, dst, src, size) \
     if (common_flags()->intercept_intrin) {                 \
       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, size);       \
       COMMON_INTERCEPTOR_READ_RANGE(ctx, src, size);        \
     }                                                       \
     return REAL(memcpy)(dst, src, size);                    \
   }
 #endif
 
+#ifndef COMMON_INTERCEPTOR_MMAP_IMPL
+#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, \
+                                     off)                                  \
+  {                                                                        \
+    void *res = REAL(mmap)(addr, sz, prot, flags, fd, off);                \
+    if (0 && res != (void *)-1 && common_flags()->intercept_intrin)        \
+      COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sz);                        \
+    return res;                                                            \
+  }
+#endif
+
 #ifndef COMMON_INTERCEPTOR_COPY_STRING
 #define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) {}
 #endif
 
 #ifndef COMMON_INTERCEPTOR_STRNDUP_IMPL
 #define COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size)                         \
   COMMON_INTERCEPTOR_ENTER(ctx, strndup, s, size);                            \
   uptr copy_length = internal_strnlen(s, size);                               \

 }
 #define INIT_STRLCPY \
   COMMON_INTERCEPT_FUNCTION(strlcpy); \
   COMMON_INTERCEPT_FUNCTION(strlcat);
 #else
 #define INIT_STRLCPY
 #endif
 
+#if SANITIZER_INTERCEPT_MMAP
+INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags, int fd,
+            OFF_T off) {
+  void *ctx;
+  if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
+    return (void *)internal_mmap(addr, sz, prot, flags, fd, off);
+  COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off);
+  COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, off);
+}
+#define INIT_MMAP COMMON_INTERCEPT_FUNCTION(mmap);
+#else
+#define INIT_MMAP
+#endif
+
+#if SANITIZER_INTERCEPT_MMAP64
+INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags, int fd,
+            OFF_T off) {
+  void *ctx;
+  if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED)
+    return (void *)internal_mmap(addr, sz, prot, flags, fd, off);
+  COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off);
+  COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap64, addr, sz, prot, flags, fd, off);
+}
+#define INIT_MMAP64 COMMON_INTERCEPT_FUNCTION(mmap64);
+#else
+#define INIT_MMAP64
+#endif
+
 #if SANITIZER_INTERCEPT_DEVNAME
 INTERCEPTOR(char *, devname, u64 dev, u32 type) {
   void *ctx;
   char *name;
   COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type);
   name = REAL(devname)(dev, type);
   if (name)
     COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1);

 #else
 #define INIT_NETENT
 #endif
 
 static void InitializeCommonInterceptors() {
   static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
   interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
 
+  INIT_MMAP;
+  INIT_MMAP64;
   INIT_TEXTDOMAIN;
   INIT_STRLEN;
   INIT_STRNLEN;
   INIT_STRNDUP;
   INIT___STRNDUP;
   INIT_STRCMP;
   INIT_STRNCMP;
   INIT_STRCASECMP;

compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h

 #define SANITIZER_INTERCEPT_UTMP \
   (SI_POSIX && !SI_MAC && !SI_FREEBSD && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_UTMPX \
   (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD)
 
 #define SANITIZER_INTERCEPT_GETLOADAVG \
   (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD)
 
+#define SANITIZER_INTERCEPT_MMAP (SI_POSIX && !SI_FREEBSD && !SI_NETBSD)
+#define SANITIZER_INTERCEPT_MMAP64 SI_POSIX
 #define SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO \
   (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_MEMALIGN (!SI_FREEBSD && !SI_MAC && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_PVALLOC \
   (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_CFREE \
   (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_ALIGNED_ALLOC (!SI_MAC)

compiler-rt/lib/tsan/rtl/tsan_interceptors.cc

if (!IsAppMem((uptr)*addr) || !IsAppMem((uptr)*addr + sz - 1)) {
       } else {
         *addr = 0;
       }
     }
   }
   return true;
 }
 
-TSAN_INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags,
-                 int fd, OFF_T 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);
-
-    if (thr->ignore_reads_and_writes == 0)
-      MemoryRangeImitateWrite(thr, pc, (uptr)res, sz);
-    else
-      MemoryResetRange(thr, pc, (uptr)res, sz);
-  }
-  return res;
-}
-
-#if SANITIZER_LINUX
-TSAN_INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags,
+template <class Mmap>
+static void *mmap_interceptor(ThreadState *thr, uptr pc, Mmap real_mmap,
+                              void *addr, SIZE_T sz, int prot, int flags,
                               int fd, OFF64_T 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 (!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);
-
+    if (fd > 0) FdAccess(thr, pc, fd);
     if (thr->ignore_reads_and_writes == 0)
       MemoryRangeImitateWrite(thr, pc, (uptr)res, sz);
     else
       MemoryResetRange(thr, pc, (uptr)res, sz);
   }
   return res;
 }
-#define TSAN_MAYBE_INTERCEPT_MMAP64 TSAN_INTERCEPT(mmap64)
-#else
-#define TSAN_MAYBE_INTERCEPT_MMAP64
-#endif
 
 TSAN_INTERCEPTOR(int, munmap, void *addr, long_t sz) {
   SCOPED_TSAN_INTERCEPTOR(munmap, addr, sz);
   if (sz != 0) {
     // If sz == 0, munmap will return EINVAL and don't unmap any memory.
     DontNeedShadowFor((uptr)addr, sz);
     ScopedGlobalProcessor sgp;
     ctx->metamap.ResetRange(thr->proc(), (uptr)addr, (uptr)sz);

 #define COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m) \
   MutexRepair(((TsanInterceptorContext *)ctx)->thr, \
             ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
 
 #define COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m) \
   MutexInvalidAccess(((TsanInterceptorContext *)ctx)->thr, \
                      ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
 
+#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd,  \
+                                     off)                                   \
+  {                                                                         \
+    SCOPED_TSAN_INTERCEPTOR(mmap, addr, sz, prot, flags, fd, off);          \
+    return mmap_interceptor(thr, pc, REAL(mmap), addr, sz, prot, flags, fd, \
+                            off);                                           \
+  }
+
 #if !SANITIZER_MAC
 #define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) \
   HandleRecvmsg(((TsanInterceptorContext *)ctx)->thr, \
       ((TsanInterceptorContext *)ctx)->pc, msg)
 #endif
 
 #define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end)                           \
   if (TsanThread *t = GetCurrentThread()) {                                    \

 #endif
 
   TSAN_INTERCEPT(malloc);
   TSAN_INTERCEPT(__libc_memalign);
   TSAN_INTERCEPT(calloc);
   TSAN_INTERCEPT(realloc);
   TSAN_INTERCEPT(free);
   TSAN_INTERCEPT(cfree);
-  TSAN_INTERCEPT(mmap);
-  TSAN_MAYBE_INTERCEPT_MMAP64;
   TSAN_INTERCEPT(munmap);
   TSAN_MAYBE_INTERCEPT_MEMALIGN;
   TSAN_INTERCEPT(valloc);
   TSAN_MAYBE_INTERCEPT_PVALLOC;
   TSAN_INTERCEPT(posix_memalign);
 
   TSAN_INTERCEPT(strcpy);  // NOLINT
   TSAN_INTERCEPT(strncpy);

compiler-rt/test/sanitizer_common/TestCases/Linux/mmap64_test.c

+// RUN: %clang %s -o %t && %run %t
+
+#define _LARGEFILE64_SOURCE 1
+
+#include <assert.h>
+#include <sys/mman.h>
+
+int main() {
+  char *buf = (char *)mmap64(0, 100000, PROT_READ | PROT_WRITE,
+                             MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+  assert(buf);
+  munmap(buf, 100000);
+}

compiler-rt/test/sanitizer_common/TestCases/Posix/mmap_test.c

+// RUN: %clang %s -o %t && %run %t
+
+#include <assert.h>
+#include <sys/mman.h>
+
+int main() {
+  char *buf = (char *)mmap(0, 100000, PROT_READ | PROT_WRITE,
+                           MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+  assert(buf);
+  munmap(buf, 100000);
+}