Index: lib/sanitizer_common/sanitizer_linux.cc
===================================================================
--- lib/sanitizer_common/sanitizer_linux.cc
+++ lib/sanitizer_common/sanitizer_linux.cc
@@ -801,7 +801,12 @@
 #if !SANITIZER_ANDROID
 // Call cb for each region mapped by map.
 void ForEachMappedRegion(link_map *map, void (*cb)(const void *, uptr)) {
-#if !SANITIZER_FREEBSD
+  CHECK_NE(map, nullptr);
+#if SANITIZER_FREEBSD
+  // FreeBSD's dlopen() returns a pointer to an Obj_Entry structure that
+  // incroporates the map structure.
+  map = (link_map*)((char*)map + 544);
+#else
   typedef ElfW(Phdr) Elf_Phdr;
   typedef ElfW(Ehdr) Elf_Ehdr;
 #endif  // !SANITIZER_FREEBSD