I've MMR running on two FreeBSD servers with OpenLDAP 2.4.47. After few days one node always crash with signal 11.

The last log I got from slapd is:

When I try to restart the slapd process it eats all the ram memory, until the server become irresponsible. I have to delete the database and re-sync everything to make it works again.

Is there a way to find out how can I fix this issue?

Thanks.