1905:20160425:131136.609 === Backtrace: ===
  1905:20160425:131136.699 14: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations](print_fatal_info+0xb0) [0x456690]
  1905:20160425:131136.699 13: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations]() [0x456d76]
  1905:20160425:131136.699 12: /lib/libc.so.6(+0x33c20) [0x7ff1a9afdc20]
  1905:20160425:131136.699 11: /lib/libc.so.6(+0x83072) [0x7ff1a9b4d072]
  1905:20160425:131136.699 10: /lib/libc.so.6(__strdup+0x16) [0x7ff1a9b4cd96]
  1905:20160425:131136.700 9: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations](zbx_strdup2+0x40) [0x45ba90]
  1905:20160425:131136.700 8: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations]() [0x46dbb1]
  1905:20160425:131136.700 7: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations]() [0x46dc8a]
  1905:20160425:131136.700 6: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations](substitute_simple_macros+0x1ebc) [0x4720bc]
  1905:20160425:131136.700 5: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations]() [0x432a56]
  1905:20160425:131136.700 4: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations](main_escalator_loop+0x81d) [0x43379d]
  1905:20160425:131136.700 3: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations](MAIN_ZABBIX_ENTRY+0x9cb) [0x41428b]
  1905:20160425:131136.700 2: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations](daemon_start+0x1a7) [0x455d57]
  1905:20160425:131136.700 1: /lib/libc.so.6(__libc_start_main+0xfe) [0x7ff1a9ae8d8e]
  1905:20160425:131136.700 0: /usr/local/sbin/zabbix_server: escalator [processed 0 escalations in 0.000539 sec, processing escalations]() [0x40f329]