stop ejabberd nodes

I use ejabberd 17.01 and 7 nodes are cluster, one of nodes is stoped and returns this error:

tail -f /var/log/messages
kernel: [1284821.040533] 1_scheduler[48247]: segfault at 7f456a5ecaa8 ip 0000000000552ecc sp 00007f45af57e920 error 4 in beam.smp[400000+279000]

there are no errors log in ejabberd logs(error.log, crash log).
ejabberd cluster have s2s connection.
what 's problem?
thanks in advance.

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