(gdb) run -s -f /etc/syslog-ng/syslog-ng.conf
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /sbin/syslog-ng -s -f /etc/syslog-ng/syslog-ng.conf
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007f18988079f7 in PyModule_AddObject () from /usr/lib64/libpython3.6m.so.1.0
(gdb) bt
#0  0x00007f18988079f7 in PyModule_AddObject () from /usr/lib64/libpython3.6m.so.1.0
#1  0x00007f1898c1649c in python_module_init () from /usr/lib64/syslog-ng/libmod-python.so
#2  0x00007f18a0c3051b in plugin_load_module () from /usr/lib64/libsyslog-ng-3.19.so.0
#3  0x00007f18a0c30712 in plugin_find () from /usr/lib64/libsyslog-ng-3.19.so.0
#4  0x00007f18a0c4e535 in parser_expr_parse () from /usr/lib64/libsyslog-ng-3.19.so.0
#5  0x00007f18a0c17e93 in cfg_parser_parse () from /usr/lib64/libsyslog-ng-3.19.so.0
#6  0x00007f18a0c40276 in main_parse () from /usr/lib64/libsyslog-ng-3.19.so.0
#7  0x00007f18a0c17e93 in cfg_parser_parse () from /usr/lib64/libsyslog-ng-3.19.so.0
#8  0x00007f18a0c14123 in cfg_run_parser () from /usr/lib64/libsyslog-ng-3.19.so.0
#9  0x00007f18a0c14213 in cfg_read_config () from /usr/lib64/libsyslog-ng-3.19.so.0
#10 0x00007f18a0c2c1db in main_loop_read_and_init_config () from /usr/lib64/libsyslog-ng-3.19.so.0
#11 0x000056398488cf26 in main ()
(gdb)