Prevent Segfault in EventPipe on disable (#56104)

Author: John Salem

src/native/eventpipe/ep-types.h

@@ -63,7 +63,7 @@ struct _EventPipeProviderCallbackData {
 #else
 struct _EventPipeProviderCallbackData_Internal {
 #endif
-	const ep_char8_t *filter_data;
+	ep_char8_t *filter_data;
 	EventPipeCallback callback_function;
 	void *callback_data;
 	int64_t keywords;

src/native/eventpipe/ep.c

@@ -246,8 +246,10 @@ ep_provider_callback_data_alloc_copy (EventPipeProviderCallbackData *provider_ca
 	EventPipeProviderCallbackData *instance = ep_rt_object_alloc (EventPipeProviderCallbackData);
 	ep_raise_error_if_nok (instance != NULL);
 
-	if (provider_callback_data_src)
+	if (provider_callback_data_src) {
 		*instance = *provider_callback_data_src;
+		instance->filter_data = ep_rt_utf8_string_dup (provider_callback_data_src->filter_data);
+	}
 
 ep_on_exit:
 	return instance;
@@ -270,7 +272,7 @@ ep_provider_callback_data_init (
 {
 	EP_ASSERT (provider_callback_data != NULL);
 
-	provider_callback_data->filter_data = filter_data;
+	provider_callback_data->filter_data = ep_rt_utf8_string_dup (filter_data);
 	provider_callback_data->callback_function = callback_function;
 	provider_callback_data->callback_data = callback_data;
 	provider_callback_data->keywords = keywords;
@@ -289,19 +291,22 @@ ep_provider_callback_data_init_copy (
 	EP_ASSERT (provider_callback_data_src != NULL);
 
 	*provider_callback_data_dst = *provider_callback_data_src;
+	provider_callback_data_dst->filter_data = ep_rt_utf8_string_dup (provider_callback_data_src->filter_data);
 	return provider_callback_data_dst;
 }
 
 void
 ep_provider_callback_data_fini (EventPipeProviderCallbackData *provider_callback_data)
 {
-	;
+	ep_return_void_if_nok (provider_callback_data != NULL);
+	ep_rt_utf8_string_free (provider_callback_data->filter_data);
 }
 
 void
 ep_provider_callback_data_free (EventPipeProviderCallbackData *provider_callback_data)
 {
 	ep_return_void_if_nok (provider_callback_data != NULL);
+	ep_provider_callback_data_fini (provider_callback_data);
 	ep_rt_object_free (provider_callback_data);
 }