diff --git a/test/Unit/lit.cfg b/test/Unit/lit.cfg
index ba4cbc5d798..15cf626c72b 100644
--- a/test/Unit/lit.cfg
+++ b/test/Unit/lit.cfg
@@ -28,6 +28,11 @@ if 'TMP' in os.environ:
 if 'TEMP' in os.environ:
     config.environment['TEMP'] = os.environ['TEMP']
 
+# Propagate path to symbolizer for ASan/MSan.
+for symbolizer in ['ASAN_SYMBOLIZER_PATH', 'MSAN_SYMBOLIZER_PATH']:
+    if symbolizer in os.environ:
+        config.environment[symbolizer] = os.environ[symbolizer]
+
 ###
 
 # Check that the object root is known.
diff --git a/test/lit.cfg b/test/lit.cfg
index 216e3c1aa0d..0ecd8feb26a 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -90,6 +90,11 @@ config.environment['LLVM_SRC_ROOT'] = getattr(config, 'llvm_src_root', '')
 config.environment['PYTHON_EXECUTABLE'] = getattr(config, 'python_executable',
                                                   '')
 
+# Propagate path to symbolizer for ASan/MSan.
+for symbolizer in ['ASAN_SYMBOLIZER_PATH', 'MSAN_SYMBOLIZER_PATH']:
+    if symbolizer in os.environ:
+        config.environment[symbolizer] = os.environ[symbolizer]
+
 ###
 
 import os