GNU gdb (Debian 8.2.1-2) 8.2.1 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from bin/postgres...done. [New LWP 2469] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `postgres: connection proxy '. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000055ce531394a6 in proxy_loop (proxy=proxy@entry=0x55ce542d70b8) at proxy.c:1011 1011 ModifyWaitEvent(chan->proxy->wait_events, chan->event_pos, WL_SOCKET_WRITEABLE | WL_SOCKET_EDGE, NULL); (gdb) bt #0 0x000055ce531394a6 in proxy_loop (proxy=proxy@entry=0x55ce542d70b8) at proxy.c:1011 #1 0x000055ce53139860 in ConnectionProxyMain (argv=0x0, argc=0) at proxy.c:1135 #2 0x000055ce53139918 in ConnectionProxyStart () at proxy.c:1167 #3 0x000055ce53134a99 in StartProxyWorker (id=2) at postmaster.c:5767 #4 StartConnectionProxies () at postmaster.c:601 #5 PostmasterMain (argc=, argv=) at postmaster.c:1467 #6 0x000055ce52e4af81 in main (argc=3, argv=0x55ce5429c220) at main.c:210