$ dirmngr # Home: ~/.gnupg # Config: /home/kristianf/.gnupg/dirmngr.conf OK Dirmngr 2.1.3 at your service keyserver --help S # Known schemata: S # hkp S # hkps S # http S # finger S # kdns Segmentation fault (core dumped) $ gdb /usr/bin/dirmngr core.6194 GNU gdb (Gentoo 7.7.1 p1) 7.7.1 Copyright (C) 2014 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-pc-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 /usr/bin/dirmngr...done. [New LWP 6194] [New LWP 6195] warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `dirmngr'. Program terminated with signal SIGSEGV, Segmentation fault. #0 ks_ldap_help (ctrl=ctrl@entry=0x1bfed70, uri=0x0) at ks-engine-ldap.c:309 309 ks-engine-ldap.c: No such file or directory. (gdb) bt #0 ks_ldap_help (ctrl=ctrl@entry=0x1bfed70, uri=0x0) at ks-engine-ldap.c:309 #1 0x000000000041b75e in ks_action_help (ctrl=ctrl@entry=0x1bfed70, url=) at ks-action.c:94 #2 0x000000000040ea63 in cmd_keyserver (ctx=0x1bff5a0, line=) at server.c:1477 #3 0x00007fea2b0caa0a in dispatch_command (ctx=0x1bff5a0, line=, linelen=) at assuan-handler.c:675 #4 0x00007fea2b0cade9 in process_request (ctx=0x1bff5a0) at assuan-handler.c:871 #5 assuan_process (ctx=0x1bff5a0) at assuan-handler.c:894 #6 0x000000000040e497 in start_command_handler (fd=fd@entry=-1) at server.c:2065 #7 0x0000000000409a60 in main (argc=0, argv=0x7fff4622bc20) at dirmngr.c:1027 (gdb)