Also, lock_cancel_waiting_and_release called by wsrep_innobase_kill_one_trx, requires both trx and lock_sys mutexes, hence dropping is not feasible in that code path.
Also, lock_cancel_ waiting_ and_release called by wsrep_innobase_ kill_one_ trx, requires both trx and lock_sys mutexes, hence dropping is not feasible in that code path.