$ sudo gdb /usr/sbin/zabbix_proxy #-f -c /etc/zabbix/zabbix_proxy.conf
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Reading symbols from /usr/sbin/zabbix_proxy...
Reading symbols from /usr/lib/debug/.build-id/be/d43bc9b6b38d3de5a2136e3e1749882c74c57a.debug...
(No debugging symbols found in /usr/lib/debug/.build-id/be/d43bc9b6b38d3de5a2136e3e1749882c74c57a.debug)
(gdb) run -f -c /etc/zabbix/zabbix_proxy.conf
Starting program: /usr/sbin/zabbix_proxy -f -c /etc/zabbix/zabbix_proxy.conf
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt full
#0  0x0000000000000000 in ?? ()
No symbol table info available.
#1  0x0000555555696697 in zbx_execute_agent_check ()
No symbol table info available.
#2  0x00005555555d3a63 in zbx_load_config ()
No symbol table info available.
#3  0x00005555555cae2e in main ()
No symbol table info available.
(gdb)