diff --git a/include/trace/stages/stage6_event_callback.h b/include/trace/stages/stage6_event_callback.h
index a0c15f67eabe..83da83a0c14f 100644
--- a/include/trace/stages/stage6_event_callback.h
+++ b/include/trace/stages/stage6_event_callback.h
@@ -35,7 +35,9 @@
 	do {								\
 		char *__str__ = __get_str(dst);				\
 		int __len__ = __get_dynamic_array_len(dst) - 1;		\
-		WARN_ON_ONCE((src) != __data_offsets.dst##_ptr_);	\
+		WARN_ON_ONCE(__builtin_constant_p(src) ?		\
+			     strcmp((src), __data_offsets.dst##_ptr_) :	\
+			     (src) != __data_offsets.dst##_ptr_);	\
 		memcpy(__str__, __data_offsets.dst##_ptr_ ? :		\
 		       EVENT_NULL_STR, __len__);			\
 		__str__[__len__] = '\0';				\