unbound dies: buffer overflow

[sean darcy]

Fedora 29, unbound-1.8.3-2.fc29.x86_64.

unbound dies with buffer overflow. Any setting I can change ?

May 25 10:30:21 lenovo-gateway.riverside systemd[1]: Starting Unbound 
recursive Domain Name Server...
May 25 10:30:22 lenovo-gateway.riverside unbound-checkconf[1047]: 
unbound-checkconf: no errors in /etc/unbound/unbound.c>
May 25 10:30:23 lenovo-gateway.riverside systemd[1]: Started Unbound 
recursive Domain Name Server.
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] notice: 
init module 0: ipsecmod
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] notice: 
init module 1: validator
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] notice: 
init module 2: iterator
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
start of service (unbound 1.8.3).
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master k.root->
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master g.root->
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master f.root->
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master e.root->
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master c.root->
May 25 10:30:24 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master b.root->
May 25 10:30:27 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master k.root->
May 25 10:30:27 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master g.root->
May 25 10:30:27 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master f.root->
May 25 10:30:27 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master e.root->
May 25 10:30:27 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master c.root->
May 25 10:30:27 lenovo-gateway.riverside unbound[1078]: [1078:0] error: 
.: failed lookup, cannot probe to master b.root->
May 25 10:30:33 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 25 10:30:42 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 26 09:27:04 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 27 08:00:58 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 28 06:06:31 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 29 04:18:58 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 30 03:44:12 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
May 31 02:26:53 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
Jun 01 02:04:21 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
Jun 02 02:03:43 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
Jun 03 01:40:56 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
Jun 04 01:05:58 lenovo-gateway.riverside unbound[1078]: [1078:0] info: 
generate keytag query _ta-4f66. NULL IN
Jun 04 06:22:35 lenovo-gateway.riverside unbound[1078]: [1078:2] info: 
generate keytag query _ta-4f66. NULL IN
Jun 04 06:22:36 lenovo-gateway.riverside unbound[1078]: *** buffer 
overflow detected ***: /usr/sbin/unbound terminated
Jun 04 06:22:36 lenovo-gateway.riverside systemd[1]: unbound.service: 
Main process exited, code=killed, status=6/ABRT
Jun 04 06:22:36 lenovo-gateway.riverside systemd[1]: unbound.service: 
Failed with result 'signal'.