-bash-4.4$ coredumpctl gdb 718 PID: 718 (xfce4-panel) UID: 1000 (aakcaagac) GID: 1000 (aakcaagac) Signal: 11 (SEGV) Timestamp: Thu 2017-06-29 13:03:24 CEST (37s ago) Command Line: xfce4-panel Executable: /usr/bin/xfce4-panel Control Group: /user.slice/user-1000.slice/session-2.scope Unit: session-2.scope Slice: user-1000.slice Session: 2 Owner UID: 1000 (aakcaagac) Boot ID: b9eff87a796748509ab4d14ec331616f Machine ID: b3c2075daed546b285cdceb12a9b9c0e Hostname: localhost.localdomain Storage: /var/lib/systemd/coredump/core.xfce4-panel.1000.b9eff87a796748509ab4d14ec331616f.718.1498734204000000.lz4 Message: Process 718 (xfce4-panel) of user 1000 dumped core. Stack trace of thread 718: #0 0x00007fe0621d2b01 xfconf_cache_set_property_reply_handler (libxfconf-0.so.3) #1 0x00007fe0605ae534 g_task_return_now (libgio-2.0.so.0) #2 0x00007fe0605aef56 g_task_return (libgio-2.0.so.0) #3 0x00007fe0605ed1a9 reply_cb (libgio-2.0.so.0) #4 0x00007fe0605ae534 g_task_return_now (libgio-2.0.so.0) #5 0x00007fe0605aef56 g_task_return (libgio-2.0.so.0) #6 0x00007fe0605e1e91 g_dbus_connection_call_done (libgio-2.0.so.0) #7 0x00007fe0605ae534 g_task_return_now (libgio-2.0.so.0) #8 0x00007fe0605aef56 g_task_return (libgio-2.0.so.0) #9 0x00007fe0605afaa0 g_task_return_new_error (libgio-2.0.so.0) #10 0x00007fe0605db5d8 send_message_data_deliver_error (libgio-2.0.so.0) #11 0x00007fe0605db67f send_message_with_reply_cancelled_idle_cb (libgio-2.0.so.0) #12 0x00007fe060006c27 g_idle_dispatch (libglib-2.0.so.0) #13 0x00007fe06000a247 g_main_dispatch (libglib-2.0.so.0) #14 0x00007fe06000a5e8 g_main_context_iterate (libglib-2.0.so.0) #15 0x00007fe06000a902 g_main_loop_run (libglib-2.0.so.0) #16 0x00007fe0615780b5 gtk_main (libgtk-3.so.0) #17 0x00005563e22fcf88 main (xfce4-panel) #18 0x00007fe05f6da4da __libc_start_main (libc.so.6) #19 0x00005563e22f70fa _start (xfce4-panel) Stack trace of thread 728: #0 0x00007fe05f7beaad poll (libc.so.6) #1 0x00007fe06000a569 g_main_context_poll (libglib-2.0.so.0) #2 0x00007fe06000a67c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fe06000a6c1 glib_worker_main (libglib-2.0.so.0) #4 0x00007fe060031536 g_thread_proxy (libglib-2.0.so.0) #5 0x00007fe05fa9236d start_thread (libpthread.so.0) #6 0x00007fe05f7cab9f __clone (libc.so.6) Stack trace of thread 1651: #0 0x00007fe05f7c5539 syscall (libc.so.6) #1 0x00007fe06004f6fa g_cond_wait_until (libglib-2.0.so.0) #2 0x00007fe05ffdeb31 g_async_queue_pop_intern_unlocked (libglib-2.0.so.0) #3 0x00007fe05ffdf0ec g_async_queue_timeout_pop (libglib-2.0.so.0) #4 0x00007fe060031fde g_thread_pool_wait_for_new_pool (libglib-2.0.so.0) #5 0x00007fe060031536 g_thread_proxy (libglib-2.0.so.0) #6 0x00007fe05fa9236d start_thread (libpthread.so.0) #7 0x00007fe05f7cab9f __clone (libc.so.6) Stack trace of thread 730: #0 0x00007fe05f7beaad poll (libc.so.6) #1 0x00007fe06000a569 g_main_context_poll (libglib-2.0.so.0) #2 0x00007fe06000a902 g_main_loop_run (libglib-2.0.so.0) #3 0x00007fe0605efcb6 gdbus_shared_thread_func (libgio-2.0.so.0) #4 0x00007fe060031536 g_thread_proxy (libglib-2.0.so.0) #5 0x00007fe05fa9236d start_thread (libpthread.so.0) #6 0x00007fe05f7cab9f __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/lib/debug/usr/bin/xfce4-panel.debug...done. done. [New LWP 718] [New LWP 728] [New LWP 1651] [New LWP 730] [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 0x00007fe0621d2b01 in xfconf_cache_set_property_reply_handler ( proxy=0x5563e2e9bfa0, res=0x5563e33b6410, user_data=0x5563e324e6d0) at xfconf-cache.c:599 599 if(!cache->pending_calls) [Current thread is 1 (Thread 0x7fe062d8aa80 (LWP 718))] Missing separate debuginfos, use: dnf debuginfo-install at-spi2-atk-2.24.1-1.fc26.x86_64 at-spi2-core-2.24.1-1.fc26.x86_64 atk-2.24.0-1.fc26.x86_64 bzip2-libs-1.0.6-22.fc26.x86_64 cairo-1.14.10-1.fc26.x86_64 cairo-gobject-1.14.10-1.fc26.x86_64 dbus-libs-1.11.12-1.fc26.x86_64 dconf-0.26.0-2.fc26.x86_64 expat-2.2.0-2.fc26.x86_64 fontconfig-2.12.1-4.fc26.x86_64 freetype-2.7.1-9.fc26.x86_64 gdk-pixbuf2-2.36.6-1.fc26.x86_64 graphite2-1.3.10-1.fc26.x86_64 gtk3-3.22.16-1.fc26.x86_64 gvfs-client-1.32.1-1.fc26.x86_64 harfbuzz-1.4.4-1.fc26.x86_64 libICE-1.0.9-9.fc26.x86_64 libSM-1.2.2-5.fc26.x86_64 libX11-1.6.5-2.fc26.x86_64 libXau-1.0.8-7.fc26.x86_64 libXcomposite-0.4.4-9.fc26.x86_64 libXcursor-1.1.14-8.fc26.x86_64 libXdamage-1.1.4-9.fc26.x86_64 libXext-1.3.3-5.fc26.x86_64 libXfixes-5.0.3-2.fc26.x86_64 libXi-1.7.9-2.fc26.x86_64 libXinerama-1.1.3-7.fc26.x86_64 libXrandr-1.5.1-2.fc26.x86_64 libXrender-0.9.10-2.fc26.x86_64 libXres-1.0.7-7.fc26.x86_64 libcap-2.25-5.fc26.x86_64 libcroco-0.6.12-1.fc26.x86_64 libdatrie-0.2.9-4.fc26.x86_64 libepoxy-1.4.1-1.fc26.x86_64 libgcrypt-1.7.7-1.fc26.x86_64 libglvnd-0.2.999-14.20170308git8e6e102.fc26.x86_64 libglvnd-egl-0.2.999-14.20170308git8e6e102.fc26.x86_64 libglvnd-glx-0.2.999-14.20170308git8e6e102.fc26.x86_64 libgpg-error-1.25-2.fc26.x86_64 libmodman-2.0.1-13.fc26.x86_64 libpng-1.6.28-2.fc26.x86_64 libproxy-0.4.15-1.fc26.x86_64 librsvg2-2.40.17-1.fc26.x86_64 libthai-0.1.25-2.fc26.x86_64 libwayland-client-1.13.0-1.fc26.x86_64 libwayland-cursor-1.13.0-1.fc26.x86_64 libwnck3-3.20.1-2.fc26.x86_64 libxcb-1.12-3.fc26.x86_64 libxkbcommon-0.7.1-3.fc26.x86_64 libxml2-2.9.4-2.fc26.x86_64 lz4-libs-1.7.5-3.fc26.x86_64 mesa-libwayland-egl-17.1.3-2.fc26.x86_64 pango-1.40.6-1.fc26.x86_64 pixman-0.34.0-3.fc26.x86_64 startup-notification-0.12-12.fc26.x86_64 systemd-libs-233-4.fc26.x86_64 xcb-util-0.4.0-6.fc26.x86_64 xz-libs-5.2.3-2.fc26.x86_64 (gdb) bt full #0 0x00007fe0621d2b01 in xfconf_cache_set_property_reply_handler (proxy=0x5563e2e9bfa0 [GDBusProxy], res=0x5563e33b6410, user_data=0x5563e324e6d0) at xfconf-cache.c:599 cache = 0x0 old_item = 0x5563e324e6d0 item = 0x5563e2fd7e80 error = 0x0 result = 21859 #1 0x00007fe0605ae534 in g_task_return_now (task=0x5563e33b6410 [GTask]) at gtask.c:1145 #2 0x00007fe0605aef56 in g_task_return (task=0x5563e33b6410 [GTask], type=) at gtask.c:1203 source = 0x5563e302e9f0 #3 0x00007fe0605ed1a9 in reply_cb (connection=, res=, user_data=0x5563e33b6410) at gdbusproxy.c:2579 task = 0x5563e33b6410 [GTask] value = error = 0x5563e3315d60 fd_list = 0x0 #4 0x00007fe0605ae534 in g_task_return_now (task=0x5563e2ffc4f0 [GTask]) at gtask.c:1145 #5 0x00007fe0605aef56 in g_task_return (task=0x5563e2ffc4f0 [GTask], type=) at gtask.c:1203 ---Type to continue, or q to quit--- source = 0x5563e302e9f0 #6 0x00007fe0605e1e91 in g_dbus_connection_call_done (source=, result=0x5563e326be00, user_data=0x5563e2ffc4f0) at gdbusconnection.c:5720 connection = task = 0x5563e2ffc4f0 [GTask] state = 0x5563e2fd7e80 error = 0x5563e340cc00 reply = 0x0 value = #7 0x00007fe0605ae534 in g_task_return_now (task=0x5563e326be00 [GTask]) at gtask.c:1145 #8 0x00007fe0605aef56 in g_task_return (task=0x5563e326be00 [GTask], type=) at gtask.c:1203 source = 0x5563e302e9f0 #9 0x00007fe0605afaa0 in g_task_return_new_error (task=task@entry=0x5563e326be00 [GTask], domain=domain@entry=772, code=code@entry=19, format=format@entry=0x7fe060657d35 "%s") at gtask.c:1811 error = args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7ffdcb0ba710, reg_save_area = 0x7ffdcb0ba650}} #10 0x00007fe0605db5d8 in send_message_data_deliver_error (task=0x5563e326be00 [GTask], domain=772, code=19, message=0x7fe06063b271 "Operation was cancelled") ---Type to continue, or q to quit--- at gdbusconnection.c:1836 connection = 0x5563e2e8c180 [GDBusConnection] data = 0x5563e326ed40 #11 0x00007fe0605db67f in send_message_with_reply_cancelled_idle_cb (user_data=user_data@entry=0x5563e326be00) at gdbusconnection.c:1848 task = 0x5563e326be00 [GTask] #12 0x00007fe060006c27 in g_idle_dispatch (source=0x5563e302e9f0, callback=0x7fe0605db650 , user_data=0x5563e326be00) at gmain.c:5586 again = #13 0x00007fe06000a247 in g_main_dispatch (context=0x5563e2e7f250) at gmain.c:3234 dispatch = 0x7fe060006c10 prev_source = 0x0 was_in_call = 0 user_data = 0x5563e326be00 callback = 0x7fe0605db650 cb_funcs = 0x7fe0602d1280 cb_data = 0x5563e3414bb0 need_destroy = source = 0x5563e302e9f0 current = 0x5563e2e7a2a0 i = 1 ---Type to continue, or q to quit--- #14 0x00007fe06000a247 in g_main_context_dispatch (context=context@entry=0x5563e2e7f250) at gmain.c:3899 #15 0x00007fe06000a5e8 in g_main_context_iterate (context=0x5563e2e7f250, block=block@entry=1, dispatch=dispatch@entry=1, self=) at gmain.c:3972 max_priority = 0 timeout = 0 some_ready = 1 nfds = allocated_nfds = 3 fds = 0x5563e2eae690 #16 0x00007fe06000a902 in g_main_loop_run (loop=0x5563e2eae4a0) at gmain.c:4168 __func__ = "g_main_loop_run" #17 0x00007fe0615780b5 in gtk_main () at /lib64/libgtk-3.so.0 #18 0x00005563e22fcf88 in main (argc=1, argv=0x7ffdcb0baa48) at main.c:369 context = 0x5563e2e2dee0 application = 0x5563e2e74c00 [PanelApplication] error = 0x0 dbus_service = 0x5563e2e76a80 [PanelDBusService] succeed = 0 remote_succeed = 80 i = 5 signums = {2, 3, 15, 6, 10} error_msg = 0x4 ---Type to continue, or q to quit--- sm_client = 0x5563e2ea05b0 [XfceSMClient] (gdb) quit -bash-4.4$