-bash-4.4$ coredumpctl gdb 15989 PID: 15989 (xfce4-panel) UID: 1000 (aakcaagac) GID: 1000 (aakcaagac) Signal: 11 (SEGV) Timestamp: Tue 2017-06-27 21:07:25 CEST (41s ago) Command Line: xfce4-panel --display :0.0 --sm-client-id 28d4b8044-38d8-4e77-8914-7762ae100132 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.c8eb5f38e658437fb56cf2aa490e8223.15989.1498590445000000.lz4 Message: Process 15989 (xfce4-panel) of user 1000 dumped core. Stack trace of thread 15989: #0 0x00007f5ec0f447ab xfconf_cache_set_property_reply_handler (libxfconf-0.so.3) #1 0x00007f5ebf321534 g_task_return_now (libgio-2.0.so.0) #2 0x00007f5ebf321f56 g_task_return (libgio-2.0.so.0) #3 0x00007f5ebf3601a9 reply_cb (libgio-2.0.so.0) #4 0x00007f5ebf321534 g_task_return_now (libgio-2.0.so.0) #5 0x00007f5ebf321f56 g_task_return (libgio-2.0.so.0) #6 0x00007f5ebf354e91 g_dbus_connection_call_done (libgio-2.0.so.0) #7 0x00007f5ebf321534 g_task_return_now (libgio-2.0.so.0) #8 0x00007f5ebf321569 complete_in_idle_cb (libgio-2.0.so.0) #9 0x00007f5ebed79c27 g_idle_dispatch (libglib-2.0.so.0) #10 0x00007f5ebed7d247 g_main_context_dispatch (libglib-2.0.so.0) #11 0x00007f5ebed7d5e8 g_main_context_iterate.isra.25 (libglib-2.0.so.0) #12 0x00007f5ebed7d902 g_main_loop_run (libglib-2.0.so.0) #13 0x00007f5ec02eb0b5 gtk_main (libgtk-3.so.0) #14 0x00005612ee92d582 main (xfce4-panel) #15 0x00007f5ebe44d4da __libc_start_main (libc.so.6) #16 0x00005612ee92d6ca _start (xfce4-panel) Stack trace of thread 15990: #0 0x00007f5ebe531aad poll (libc.so.6) #1 0x00007f5ebed7d569 g_main_context_iterate.isra.25 (libglib-2.0.so.0) #2 0x00007f5ebed7d67c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f5ebed7d6c1 glib_worker_main (libglib-2.0.so.0) #4 0x00007f5ebeda4536 g_thread_proxy (libglib-2.0.so.0) #5 0x00007f5ebe80536d start_thread (libpthread.so.0) #6 0x00007f5ebe53db9f __clone (libc.so.6) Stack trace of thread 15992: #0 0x00007f5ebe531aad poll (libc.so.6) #1 0x00007f5ebed7d569 g_main_context_iterate.isra.25 (libglib-2.0.so.0) #2 0x00007f5ebed7d902 g_main_loop_run (libglib-2.0.so.0) #3 0x00007f5ebf362cb6 gdbus_shared_thread_func (libgio-2.0.so.0) #4 0x00007f5ebeda4536 g_thread_proxy (libglib-2.0.so.0) #5 0x00007f5ebe80536d start_thread (libpthread.so.0) #6 0x00007f5ebe53db9f __clone (libc.so.6) Stack trace of thread 16104: #0 0x00007f5ebe538539 syscall (libc.so.6) #1 0x00007f5ebedc26fa g_cond_wait_until (libglib-2.0.so.0) #2 0x00007f5ebed51b31 g_async_queue_pop_intern_unlocked (libglib-2.0.so.0) #3 0x00007f5ebed520ec g_async_queue_timeout_pop (libglib-2.0.so.0) #4 0x00007f5ebeda4fde g_thread_pool_thread_proxy (libglib-2.0.so.0) #5 0x00007f5ebeda4536 g_thread_proxy (libglib-2.0.so.0) #6 0x00007f5ebe80536d start_thread (libpthread.so.0) #7 0x00007f5ebe53db9f __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 15989] [New LWP 15990] [New LWP 15992] [New LWP 16104] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `xfce4-panel --display :0.0 --sm-client-id 28d4b8044-38d8-4e77-8914-7762ae100132'. Program terminated with signal SIGSEGV, Segmentation fault. #0 xfconf_cache_set_property_reply_handler (proxy=0x5612f07c6f40, res=0x5612f0b662e0, user_data=0x7f5e90001270) at xfconf-cache.c:599 599 if(!cache->pending_calls) [Current thread is 1 (Thread 0x7f5ec1af7a80 (LWP 15989))] 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 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 glib2-2.52.3-1.fc26.x86_64 glibc-2.25-6.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 libblkid-2.30-1.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 libffi-3.1-11.fc26.x86_64 libgcc-7.1.1-3.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 libmount-2.30-1.fc26.x86_64 libpng-1.6.28-2.fc26.x86_64 librsvg2-2.40.17-1.fc26.x86_64 libselinux-2.6-6.fc26.x86_64 libthai-0.1.25-2.fc26.x86_64 libuuid-2.30-1.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 pcre-8.40-7.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 zlib-1.2.11-2.fc26.x86_64 (gdb) bt full #0 0x00007f5ec0f447ab in xfconf_cache_set_property_reply_handler (proxy=0x5612f07c6f40, res=0x5612f0b662e0, user_data=0x7f5e90001270) at xfconf-cache.c:599 cache = 0x0 old_item = 0x7f5e90001270 item = error = 0x0 result = #1 0x00007f5ebf321534 in g_task_return_now () at /lib64/libgio-2.0.so.0 #2 0x00007f5ebf321f56 in g_task_return () at /lib64/libgio-2.0.so.0 #3 0x00007f5ebf3601a9 in reply_cb () at /lib64/libgio-2.0.so.0 #4 0x00007f5ebf321534 in g_task_return_now () at /lib64/libgio-2.0.so.0 #5 0x00007f5ebf321f56 in g_task_return () at /lib64/libgio-2.0.so.0 #6 0x00007f5ebf354e91 in g_dbus_connection_call_done () at /lib64/libgio-2.0.so.0 #7 0x00007f5ebf321534 in g_task_return_now () at /lib64/libgio-2.0.so.0 #8 0x00007f5ebf321569 in complete_in_idle_cb () at /lib64/libgio-2.0.so.0 #9 0x00007f5ebed79c27 in g_idle_dispatch () at /lib64/libglib-2.0.so.0 #10 0x00007f5ebed7d247 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0 #11 0x00007f5ebed7d5e8 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #12 0x00007f5ebed7d902 in g_main_loop_run () at /lib64/libglib-2.0.so.0 #13 0x00007f5ec02eb0b5 in gtk_main () at /lib64/libgtk-3.so.0 #14 0x00005612ee92d582 in main (argc=, argv=) ---Type to continue, or q to quit--- at main.c:369 context = application = 0x5612f079fc00 error = 0x0 dbus_service = 0x5612f07a1a50 succeed = remote_succeed = 124 i = signums = {2, 3, 15, 6, 10} error_msg = sm_client = 0x5612f07cb580 (gdb) q -bash-4.4$