116  * yama_relation_cleanup - remove invalid entries from the relation list
121 	struct ptrace_relation *relation;  in yama_relation_cleanup()  local
125 	list_for_each_entry_rcu(relation, &ptracer_relations, node) {  in yama_relation_cleanup()
126 		if (relation->invalid) {  in yama_relation_cleanup()
127 			list_del_rcu(&relation->node);  in yama_relation_cleanup()
128 			kfree_rcu(relation, rcu);  in yama_relation_cleanup()
148 	struct ptrace_relation *relation, *added;  in yama_ptracer_add()  local
160 	list_for_each_entry_rcu(relation, &ptracer_relations, node) {  in yama_ptracer_add()
161 		if (relation->invalid)  in yama_ptracer_add()
163 		if (relation->tracee == tracee) {  in yama_ptracer_add()
164 			list_replace_rcu(&relation->node, &added->node);  in yama_ptracer_add()
165 			kfree_rcu(relation, rcu);  in yama_ptracer_add()
180  * @tracer: remove any relation where tracer task matches
181  * @tracee: remove any relation where tracee task matches
186 	struct ptrace_relation *relation;  in yama_ptracer_del()  local
190 	list_for_each_entry_rcu(relation, &ptracer_relations, node) {  in yama_ptracer_del()
191 		if (relation->invalid)  in yama_ptracer_del()
193 		if (relation->tracee == tracee ||  in yama_ptracer_del()
194 		    (tracer && relation->tracer == tracer)) {  in yama_ptracer_del()
195 			relation->invalid = true;  in yama_ptracer_del()
313 	struct ptrace_relation *relation;  in ptracer_exception_found()  local
332 	list_for_each_entry_rcu(relation, &ptracer_relations, node) {  in ptracer_exception_found()
333 		if (relation->invalid)  in ptracer_exception_found()
335 		if (relation->tracee == tracee) {  in ptracer_exception_found()
336 			parent = relation->tracer;  in ptracer_exception_found()