diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.h b/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.h
@@ -34,6 +34,7 @@
 
   void LockAll();
   void UnlockAll();
+  void TestOnlyUnmap();
 
  private:
   ChainedOriginDepot(const ChainedOriginDepot &) = delete;
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.cpp
--- a/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_chained_origin_depot.cpp
@@ -143,4 +143,6 @@
 
 void ChainedOriginDepot::UnlockAll() { depot.UnlockAll(); }
 
+void ChainedOriginDepot::TestOnlyUnmap() { depot.TestOnlyUnmap(); }
+
 }  // namespace __sanitizer
diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_chained_origin_depot_test.cpp b/compiler-rt/lib/sanitizer_common/tests/sanitizer_chained_origin_depot_test.cpp
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_chained_origin_depot_test.cpp
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_chained_origin_depot_test.cpp
@@ -68,6 +68,7 @@
 }
 
 TEST(SanitizerCommon, ChainedOriginDepotStats) {
+  chainedOriginDepot.TestOnlyUnmap();
   StackDepotStats stats0 = chainedOriginDepot.GetStats();
 
   u32 new_id;