diff --git a/compiler-rt/lib/dfsan/dfsan_interceptors.cpp b/compiler-rt/lib/dfsan/dfsan_interceptors.cpp
--- a/compiler-rt/lib/dfsan/dfsan_interceptors.cpp
+++ b/compiler-rt/lib/dfsan/dfsan_interceptors.cpp
@@ -22,30 +22,6 @@
 
 static bool interceptors_initialized;
 
-INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags,
-            int fd, OFF_T offset) {
-  void *res;
-
-  // interceptors_initialized is set to true during preinit_array, when we're
-  // single-threaded.  So we don't need to worry about accessing it atomically.
-  if (!interceptors_initialized)
-    res = (void *)syscall(__NR_mmap, addr, length, prot, flags, fd, offset);
-  else
-    res = REAL(mmap)(addr, length, prot, flags, fd, offset);
-
-  if (res != (void *)-1)
-    dfsan_set_label(0, res, RoundUpTo(length, GetPageSize()));
-  return res;
-}
-
-INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags,
-            int fd, OFF64_T offset) {
-  void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset);
-  if (res != (void *)-1)
-    dfsan_set_label(0, res, RoundUpTo(length, GetPageSize()));
-  return res;
-}
-
 INTERCEPTOR(int, munmap, void *addr, SIZE_T length) {
   int res = REAL(munmap)(addr, length);
   if (res != -1) {
@@ -62,8 +38,6 @@
 void InitializeInterceptors() {
   CHECK(!interceptors_initialized);
 
-  INTERCEPT_FUNCTION(mmap);
-  INTERCEPT_FUNCTION(mmap64);
   INTERCEPT_FUNCTION(munmap);
 
   interceptors_initialized = true;