Zabbix Proxy Crashing : configuration syncer

[syndeysider]

Zabbix 3.4.4
RHEL 7 (64bit)

Anyone run into this issue?

1313:20171213:012727.599 19: zabbix_proxy: configuration syncer [loading configuration](zbx_log_fatal_info+0x13c) [0x7f99196b0358]
1313:20171213:012727.599 18: zabbix_proxy: configuration syncer [loading configuration](+0xc676d) [0x7f99196b076d]
1313:20171213:012727.599 17: /lib64/libc.so.6(+0x35270) [0x7f991628a270]
1313:20171213:012727.599 16: zabbix_proxy: configuration syncer [loading configuration](+0xc115a) [0x7f99196ab15a]
1313:20171213:012727.599 15: zabbix_proxy: configuration syncer [loading configuration](__zbx_mem_malloc+0xc4) [0x7f99196ac268]
1313:20171213:012727.599 14: zabbix_proxy: configuration syncer [loading configuration](+0xc2a30) [0x7f99196aca30]
1313:20171213:012727.599 13: zabbix_proxy: configuration syncer [loading configuration](zbx_hashset_insert_ext+0x2d4) [0x7f99196b7d4a]
1313:20171213:012727.599 12: zabbix_proxy: configuration syncer [loading configuration](zbx_strpool_intern+0x5d) [0x7f99196acbef]
1313:20171213:012727.599 11: zabbix_proxy: configuration syncer [loading configuration](+0x9acfb) [0x7f9919684cfb]
1313:20171213:012727.599 10: zabbix_proxy: configuration syncer [loading configuration](+0x9d4e4) [0x7f99196874e4]
1313:20171213:012727.599 9: zabbix_proxy: configuration syncer [loading configuration](DCsync_configuration+0x464) [0x7f991968df6e]
1313:20171213:012727.600 8: zabbix_proxy: configuration syncer [loading configuration](process_proxyconfig+0x3e8) [0x7f99196febfa]
1313:20171213:012727.600 7: zabbix_proxy: configuration syncer [loading configuration](+0x3bfbc) [0x7f9919625fbc]
1313:20171213:012727.600 6: zabbix_proxy: configuration syncer [loading configuration](proxyconfig_thread+0x12e) [0x7f991962613e]
1313:20171213:012727.600 5: zabbix_proxy: configuration syncer [loading configuration](zbx_thread_start+0x37) [0x7f99196c00b7]
1313:20171213:012727.600 4: zabbix_proxy: configuration syncer [loading configuration](MAIN_ZABBIX_ENTRY+0x76d) [0x7f991961dacc]
1313:20171213:012727.600 3: zabbix_proxy: configuration syncer [loading configuration](daemon_start+0x325) [0x7f99196afa9e]
1313:20171213:012727.600 2: zabbix_proxy: configuration syncer [loading configuration](main+0x312) [0x7f991961d35d]
1313:20171213:012727.600 1: /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f9916276c05]
1313:20171213:012727.600 0: zabbix_proxy: configuration syncer [loading configuration](+0x31bf9) [0x7f991961bbf9]

[andris]

Seems like proxy configuration cache run out of free memory.
Isn't there a critical message in proxy log ?
How about increasing "CacheSize" parameter ?