"buffer overflow detected" when running SHOW POOL_STATUS

Hello

I am using the latest pgpool-II v4.6.4 on Rocky Linux v10.1
(installation via RPMs) with PostgreSQL 18 (one primary, one replica,
streaming replication)
When attempting to run POOL_STATUS command, either as SQL or via pcp,
I am getting "buffer overflow detected" in the log.
Here are the contents of the log from both SQL and pcp commands:

1)
sudo -u postgres pcp_pool_status -w -v -h localhost -p 9898 -U postgres

2025-11-27 13:30:19.298 [4486]: [3-1] user=[No Connection],db=[No
Connection],app=pcp_main LOG: forked new pcp worker, pid=4495
socket=7
2025-11-27 13:30:19.298 [4486]: [4-1] user=[No Connection],db=[No
Connection],app=pcp_main LOCATION: pcp_child.c:327
*** buffer overflow detected ***: terminated
2025-11-27 13:30:20.315 [4486]: [5-1] user=[No Connection],db=[No
Connection],app=pcp_main LOG: PCP process with pid: 4495 exits with
status 134 by signal 6
2025-11-27 13:30:20.315 [4486]: [6-1] user=[No Connection],db=[No
Connection],app=pcp_main LOCATION: pcp_child.c:394

2)
sudo -u postgres psql -w -h localhost -p 9999 -U postgres -c "SHOW POOL_STATUS"

2025-11-27 13:31:34.385 [4390]: [1-1]
user=postgres,db=postgres,app=psql LOG: DB node id: 0 backend pid:
10166 statement: SELECT pg_catalog.version()
2025-11-27 13:31:34.385 [4390]: [2-1]
user=postgres,db=postgres,app=psql LOCATION:
pool_proto_modules.c:3803
*** buffer overflow detected ***: terminated

And here is my pgpool.conf file (only changed lines - diff compared to
pgpool.conf.sample)
diff --unchanged-line-format= --old-line-format=
--new-line-format='%L' pgpool.conf.sample pgpool.conf

listen_addresses = '*'
unix_socket_directories = '/var/run/pgpool'
pcp_socket_dir = '/var/run/pgpool'
serialize_accept = on
backend_hostname0 = '192.168.68.104'
backend_port0 = 5432
backend_weight0 = 1
backend_data_directory0 = '/data/pgdata/18'
backend_flag0 = 'ALWAYS_PRIMARY'
backend_application_name0 = 'primary'
backend_hostname1 = '192.168.68.105'
backend_port1 = 5432
backend_weight1 = 1
backend_data_directory1 = '/data/pgdata/18'
backend_flag1 = 'DISALLOW_TO_FAILOVER'
backend_application_name1 = 'replica_1'
num_init_children = 96
max_pool = 2
child_life_time = 0
log_line_prefix = '%m [%p]: [%l-1] user=%u,db=%d,app=%a ' #
printf-style string to output at beginning of each log line.
log_connections = off
log_disconnections = off
log_per_node_statement = on
log_standby_delay = 'always'
log_error_verbosity = verbose # terse, default, or verbose messages
log_filename = 'pgpool-01-%a.log'
write_function_list =
'currval,lastval,nextval,setval,public.upgrade_.*,upgrade_.*,public.update_.*,update_.*,public.selsert_.*,selsert_.*,public.purge_.*,purge_.*,public.process_.*,process_.*,public.move_.*,move_.*,public.merge_.*,merge_.*,public.mark_.*,mark_.*,billing.can_ahs_claim_charge,billing.can_ahs_apply_.*'
statement_level_load_balance = on
sr_check_period = 5s
sr_check_user = 'pgpool_monitor'
delay_threshold_by_time = 500ms
health_check_period = 10
health_check_timeout = 30
health_check_user = 'pgpool_monitor'
health_check_max_retries = 10
failover_on_backend_error = off
check_temp_table = trace