diff --git a/compiler-rt/lib/scudo/standalone/combined.h b/compiler-rt/lib/scudo/standalone/combined.h
--- a/compiler-rt/lib/scudo/standalone/combined.h
+++ b/compiler-rt/lib/scudo/standalone/combined.h
@@ -215,6 +215,7 @@
   void unmapTestOnly() {
     TSDRegistry.unmapTestOnly();
     Primary.unmapTestOnly();
+    Secondary.unmapTestOnly();
 #ifdef GWP_ASAN_HOOKS
     if (getFlags()->GWP_ASAN_InstallSignalHandlers)
       gwp_asan::segv_handler::uninstallSignalHandlers();
diff --git a/compiler-rt/lib/scudo/standalone/secondary.h b/compiler-rt/lib/scudo/standalone/secondary.h
--- a/compiler-rt/lib/scudo/standalone/secondary.h
+++ b/compiler-rt/lib/scudo/standalone/secondary.h
@@ -83,6 +83,7 @@
   void enable() {}
   void releaseToOS() {}
   void disableMemoryTagging() {}
+  void unmapTestOnly() {}
   bool setOption(Option O, UNUSED sptr Value) {
     if (O == Option::ReleaseInterval || O == Option::MaxCacheEntriesCount ||
         O == Option::MaxCacheEntrySize)
@@ -326,6 +327,8 @@
 
   void enable() { Mutex.unlock(); }
 
+  void unmapTestOnly() { empty(); }
+
 private:
   void empty() {
     struct {
@@ -456,6 +459,8 @@
 
   void disableMemoryTagging() { Cache.disableMemoryTagging(); }
 
+  void unmapTestOnly() { Cache.unmapTestOnly(); }
+
 private:
   typename Config::SecondaryCache Cache;
 
diff --git a/compiler-rt/lib/scudo/standalone/tests/secondary_test.cpp b/compiler-rt/lib/scudo/standalone/tests/secondary_test.cpp
--- a/compiler-rt/lib/scudo/standalone/tests/secondary_test.cpp
+++ b/compiler-rt/lib/scudo/standalone/tests/secondary_test.cpp
@@ -67,6 +67,7 @@
   scudo::ScopedString Str(1024);
   L->getStats(&Str);
   Str.output();
+  L->unmapTestOnly();
 }
 
 struct NoCacheConfig {
@@ -124,6 +125,7 @@
   scudo::ScopedString Str(1024);
   L->getStats(&Str);
   Str.output();
+  L->unmapTestOnly();
 }
 
 TEST(ScudoSecondaryTest, SecondaryIterate) {
@@ -147,6 +149,7 @@
   scudo::ScopedString Str(1024);
   L->getStats(&Str);
   Str.output();
+  L->unmapTestOnly();
 }
 
 TEST(ScudoSecondaryTest, SecondaryOptions) {
@@ -170,6 +173,7 @@
     EXPECT_TRUE(L->setOption(scudo::Option::MaxCacheEntrySize, 1UL << 20));
     EXPECT_TRUE(L->canCache(1UL << 16));
   }
+  L->unmapTestOnly();
 }
 
 static std::mutex Mutex;
@@ -216,4 +220,5 @@
   scudo::ScopedString Str(1024);
   L->getStats(&Str);
   Str.output();
+  L->unmapTestOnly();
 }