--- a/src/java.instrument/share/native/libinstrument/JPLISAgent.c	Mon Sep 16 13:53:41 2019 +0200
+++ b/src/java.instrument/share/native/libinstrument/JPLISAgent.c	Fri Sep 13 11:04:46 2019 +0200
@@ -1486,6 +1486,7 @@
             platformLen = convertUft8ToPlatformString((char*)utf8Chars, utf8Len, platformChars, MAXPATHLEN);
             if (platformLen < 0) {
                 createAndThrowInternalError(jnienv);
+                (*jnienv)->ReleaseStringUTFChars(jnienv, jarFile, utf8Chars);
                 return;
             }