-bash-4.4$ coredumpctl gdb 863 PID: 863 (xfce4-panel) UID: 1000 (aakcaagac) GID: 1000 (aakcaagac) Signal: 11 (SEGV) Timestamp: Tue 2017-06-27 20:55:46 CEST (2min 29s ago) Command Line: xfce4-panel Executable: /usr/bin/xfce4-panel Control Group: /user.slice/user-1000.slice/session-6.scope Unit: session-6.scope Slice: user-1000.slice Session: 6 Owner UID: 1000 (aakcaagac) Boot ID: c8eb5f38e658437fb56cf2aa490e8223 Machine ID: b3c2075daed546b285cdceb12a9b9c0e Hostname: localhost.localdomain Storage: /var/lib/systemd/coredump/core.xfce4-panel.1000.c8eb5f38e658437fb56cf2aa490e8223.863.1498589746000000.lz4 Message: Process 863 (xfce4-panel) of user 1000 dumped core. Stack trace of thread 863: #0 0x00007f801224b940 g_str_hash (libglib-2.0.so.0) #1 0x00007f801224a775 g_hash_table_remove_internal (libglib-2.0.so.0) #2 0x00007f80144237d3 xfconf_cache_set_property_reply_handler (libxfconf-0.so.3) #3 0x00007f8012800534 g_task_return_now (libgio-2.0.so.0) #4 0x00007f8012800f56 g_task_return (libgio-2.0.so.0) #5 0x00007f801283f1a9 reply_cb (libgio-2.0.so.0) #6 0x00007f8012800534 g_task_return_now (libgio-2.0.so.0) #7 0x00007f8012800f56 g_task_return (libgio-2.0.so.0) #8 0x00007f8012833e91 g_dbus_connection_call_done (libgio-2.0.so.0) #9 0x00007f8012800534 g_task_return_now (libgio-2.0.so.0) #10 0x00007f8012800f56 g_task_return (libgio-2.0.so.0) #11 0x00007f8012801aa0 g_task_return_new_error (libgio-2.0.so.0) #12 0x00007f801282d5d8 send_message_data_deliver_error (libgio-2.0.so.0) #13 0x00007f801282d67f send_message_with_reply_cancelled_idle_cb (libgio-2.0.so.0) #14 0x00007f8012258c27 g_idle_dispatch (libglib-2.0.so.0) #15 0x00007f801225c247 g_main_context_dispatch (libglib-2.0.so.0) #16 0x00007f801225c5e8 g_main_context_iterate.isra.25 (libglib-2.0.so.0) #17 0x00007f801225c902 g_main_loop_run (libglib-2.0.so.0) #18 0x00007f80137ca0b5 gtk_main (libgtk-3.so.0) #19 0x00005641eee92582 main (xfce4-panel) #20 0x00007f801192c4da __libc_start_main (libc.so.6) #21 0x00005641eee926ca _start (xfce4-panel) Stack trace of thread 874: #0 0x00007f8011a10aad poll (libc.so.6) #1 0x00007f801225c569 g_main_context_iterate.isra.25 (libglib-2.0.so.0) #2 0x00007f801225c67c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f801225c6c1 glib_worker_main (libglib-2.0.so.0) #4 0x00007f8012283536 g_thread_proxy (libglib-2.0.so.0) #5 0x00007f8011ce436d start_thread (libpthread.so.0) #6 0x00007f8011a1cb9f __clone (libc.so.6) Stack trace of thread 876: #0 0x00007f8011a10aad poll (libc.so.6) #1 0x00007f801225c569 g_main_context_iterate.isra.25 (libglib-2.0.so.0) #2 0x00007f801225c902 g_main_loop_run (libglib-2.0.so.0) #3 0x00007f8012841cb6 gdbus_shared_thread_func (libgio-2.0.so.0) #4 0x00007f8012283536 g_thread_proxy (libglib-2.0.so.0) #5 0x00007f8011ce436d start_thread (libpthread.so.0) #6 0x00007f8011a1cb9f __clone (libc.so.6) Stack trace of thread 8081: #0 0x00007f8011a17539 syscall (libc.so.6) #1 0x00007f80122a16fa g_cond_wait_until (libglib-2.0.so.0) #2 0x00007f8012230b31 g_async_queue_pop_intern_unlocked (libglib-2.0.so.0) #3 0x00007f80122310ec g_async_queue_timeout_pop (libglib-2.0.so.0) #4 0x00007f8012283fde g_thread_pool_thread_proxy (libglib-2.0.so.0) #5 0x00007f8012283536 g_thread_proxy (libglib-2.0.so.0) #6 0x00007f8011ce436d start_thread (libpthread.so.0) #7 0x00007f8011a1cb9f __clone (libc.so.6) GNU gdb (GDB) Fedora 8.0-13.fc26 Copyright (C) 2017 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-redhat-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/xfce4-panel...Reading symbols from /usr/bin/xfce4-panel...(no debugging symbols found)...done. (no debugging symbols found)...done. [New LWP 863] [New LWP 874] [New LWP 876] [New LWP 8081] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `xfce4-panel'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f801224b940 in g_str_hash () from /lib64/libglib-2.0.so.0 [Current thread is 1 (Thread 0x7f8014fd6a80 (LWP 863))] Missing separate debuginfos, use: dnf debuginfo-install xfce4-panel-4.13.0-1.fc26.x86_64 (gdb) bt full #0 0x00007f801224b940 in g_str_hash () at /lib64/libglib-2.0.so.0 #1 0x00007f801224a775 in g_hash_table_remove_internal () at /lib64/libglib-2.0.so.0 #2 0x00007f80144237d3 in xfconf_cache_set_property_reply_handler () at /lib64/libxfconf-0.so.3 #3 0x00007f8012800534 in g_task_return_now () at /lib64/libgio-2.0.so.0 #4 0x00007f8012800f56 in g_task_return () at /lib64/libgio-2.0.so.0 #5 0x00007f801283f1a9 in reply_cb () at /lib64/libgio-2.0.so.0 #6 0x00007f8012800534 in g_task_return_now () at /lib64/libgio-2.0.so.0 #7 0x00007f8012800f56 in g_task_return () at /lib64/libgio-2.0.so.0 #8 0x00007f8012833e91 in g_dbus_connection_call_done () at /lib64/libgio-2.0.so.0 #9 0x00007f8012800534 in g_task_return_now () at /lib64/libgio-2.0.so.0 #10 0x00007f8012800f56 in g_task_return () at /lib64/libgio-2.0.so.0 #11 0x00007f8012801aa0 in g_task_return_new_error () at /lib64/libgio-2.0.so.0 #12 0x00007f801282d5d8 in send_message_data_deliver_error () at /lib64/libgio-2.0.so.0 #13 0x00007f801282d67f in send_message_with_reply_cancelled_idle_cb () at /lib64/libgio-2.0.so.0 #14 0x00007f8012258c27 in g_idle_dispatch () at /lib64/libglib-2.0.so.0 #15 0x00007f801225c247 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0 #16 0x00007f801225c5e8 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 ---Type to continue, or q to quit--- #17 0x00007f801225c902 in g_main_loop_run () at /lib64/libglib-2.0.so.0 #18 0x00007f80137ca0b5 in gtk_main () at /lib64/libgtk-3.so.0 #19 0x00005641eee92582 in main () (gdb) q -bash-4.4$