diff --git a/src/Util/logger.cpp b/src/Util/logger.cpp
index b8a43878a..2ae000036 100644
--- a/src/Util/logger.cpp
+++ b/src/Util/logger.cpp
@@ -624,7 +624,7 @@ void LoggerWrapper::printLogV(Logger &logger, int level, const char *file, const
     char *str = nullptr;
     if (vasprintf(&str, fmt, ap) > 0 && str) {
         info << str;
-        free(str);
+        delete [] str; // 开启asan后，用free会卡死
     }
 }
 
diff --git a/src/Util/util.cpp b/src/Util/util.cpp
index 6f2327b5d..b4ee662fc 100644
--- a/src/Util/util.cpp
+++ b/src/Util/util.cpp
@@ -623,7 +623,7 @@ string demangle(const char *mangled) {
     string out;
     if (status == 0 && demangled) { // Demangling succeeeded.
         out.append(demangled);
-        free(demangled);
+        delete [] demangled; // 开启asan后，用free会卡死
     } else {
         out.append(mangled);
     }