Server stopped responding and killed itself while exiting paging state

We are currently experiencing this error while running stress test on artemis.

Basic configuration:

1 broker ,1 topic, pub-sub mode.

Journal type = MAPPED. 

Threadpool max size = 60.

In order to test the throughput of artemis we use 300 producers and 300 consumers. However we found that sometimes when artemis exit paging state, it will stop responding and kill itself. This situatuion happened on some specific servers.

Details can be found in attached dump file.