--- samba-4.15.5/lib/util/debug.c~	2021-12-08 15:35:56.000000000 +0100
+++ samba-4.15.5/lib/util/debug.c	2022-02-13 18:13:26.956292670 +0100
@@ -282,7 +282,7 @@
 static void debug_lttng_log(int msg_level,
 			    const char *msg, const char *msg_no_nl)
 {
-	tracef(msg_no_nl);
+	tracef("%s", msg_no_nl);
 }
 #endif /* WITH_LTTNG_TRACEF */