We are in the process of migrating to a MariaDB Galera cluster from a MySQL 5.1 Replication environment. The first step is to use one Galera node as a replication slave to the existing environment. This process was running smoothly until it started crashing with the attached stack trace. Restarting the node did not solve the issue. Stopping the slave process (skip-slave-start) will allow the node to start, but crashes again when we resume replication.