So during a upgrade this morning this happened again: $ coredumpctl list TIME PID UID GID SIG COREFILE EXE Sun 2019-08-11 08:33:45 CST 1044 1000 1000 11 present /usr/bin/xfdesktop Sun 2019-08-11 08:33:45 CST 32695 1000 1000 11 present /usr/bin/xfce4-appfinder Sun 2019-08-11 08:33:45 CST 1040 1000 1000 11 present /usr/bin/xfce4-panel Sun 2019-08-11 08:34:49 CST 6557 1000 1000 11 present /usr/bin/xfdesktop Sun 2019-08-11 08:35:10 CST 6836 1000 1000 11 present /usr/bin/xfdesktop
$ coredumpctl info 6557 PID: 6557 (xfdesktop) UID: 1000 (adam) GID: 1000 (adam) Signal: 11 (SEGV) Timestamp: Sun 2019-08-11 08:34:48 CST (13s ago) Command Line: xfdesktop --display :0.0 --sm-client-id 22a396536-a119-4d09-8614-8656bfafc117 Executable: /usr/bin/xfdesktop Control Group: /user.slice/user-1000.slice/session-2.scope Unit: session-2.scope Slice: user-1000.slice Session: 2 Owner UID: 1000 (adam) Boot ID: fe9a729066a445b8a9b18c1d08fc80f6 Machine ID: 647a0bfe1e794d9db74e8b9202aab665 Hostname: MyDebian Storage: /var/lib/systemd/coredump/core.xfdesktop.1000.fe9a729066a445b8a9b18c1d08fc80f6.6557.156548368800 0000.l Message: Process 6557 (xfdesktop) of user 1000 dumped core. Stack trace of thread 6558: #0 0x00007f9cafce975a g_slice_alloc (libglib-2.0.so.0) #1 0x00007f9cafcee183 g_string_sized_new (libglib-2.0.so.0) #2 0x00007f9cafcb5de1 n/a (libglib-2.0.so.0) #3 0x00007f9cafcb72c5 g_build_filename (libglib-2.0.so.0) #4 0x00007f9caff9e9f8 n/a (libgio-2.0.so.0) #5 0x00007f9caffa48fa n/a (libgio-2.0.so.0) #6 0x00007f9caffa5479 g_file_monitor_source_handle_event (libgio-2.0.so.0) #7 0x00007f9caffb0559 n/a (libgio-2.0.so.0) #8 0x00007f9caffafadc n/a (libgio-2.0.so.0) #9 0x00007f9caffafc96 n/a (libgio-2.0.so.0) #10 0x00007f9caffaefe9 n/a (libgio-2.0.so.0) #11 0x00007f9cafccb898 g_main_context_dispatch (libglib-2.0.so.0) #12 0x00007f9cafccbc88 n/a (libglib-2.0.so.0) #13 0x00007f9cafccbd1c g_main_context_iteration (libglib-2.0.so.0) #14 0x00007f9cafccbd61 n/a (libglib-2.0.so.0) #15 0x00007f9cafcf489d n/a (libglib-2.0.so.0) #16 0x00007f9cafc63fa3 start_thread (libpthread.so.0) #17 0x00007f9cafb944cf __clone (libc.so.6) Stack trace of thread 6557: #0 0x00007f9cafb89819 __GI___poll (libc.so.6) #1 0x00007f9cafccbbf6 n/a (libglib-2.0.so.0) #2 0x00007f9cafccbf82 g_main_loop_run (libglib-2.0.so.0) #3 0x00007f9cb05fd8e7 gtk_main (libgtk-x11-2.0.so.0) #4 0x000055de8878bc6c n/a (xfdesktop) #5 0x000055de8878c0a6 n/a (xfdesktop) #6 0x00007f9cafcc8263 n/a (libglib-2.0.so.0) #7 0x00007f9cafcc8c9e n/a (libglib-2.0.so.0) #8 0x00007f9cafccb928 g_main_context_dispatch (libglib-2.0.so.0) #9 0x00007f9cafccbc88 n/a (libglib-2.0.so.0) #10 0x00007f9cafccbd1c g_main_context_iteration (libglib-2.0.so.0) #11 0x00007f9caff4ca0d g_application_run (libgio-2.0.so.0) #12 0x000055de88780fad main (xfdesktop) #13 0x00007f9cafabf09b __libc_start_main (libc.so.6) #14 0x000055de88780fea _start (xfdesktop) Stack trace of thread 6559: #0 0x00007f9cafb89819 __GI___poll (libc.so.6) #1 0x00007f9cafccbbf6 n/a (libglib-2.0.so.0) #2 0x00007f9cafccbf82 g_main_loop_run (libglib-2.0.so.0) #3 0x00007f9caff86e46 n/a (libgio-2.0.so.0) #4 0x00007f9cafcf489d n/a (libglib-2.0.so.0) #5 0x00007f9cafc63fa3 start_thread (libpthread.so.0) #6 0x00007f9cafb944cf __clone (libc.so.6) I then installed libglib2.0-0-dbgsym libgtk2.0-0-dbgsym libc6-dbg xfdesktop4-dbgsym and did a backtrace: (gdb) #0 0x00007f9cafce975a in magazine_chain_pop_head (magazine_chunks=0x7f9ca8000bf0) at ../../../glib/gslice.c:538 #1 0x00007f9cafce975a in thread_memory_magazine1_alloc (tmem=0x7f9ca8000bd0, ix=1) at ../../../glib/gslice.c:841 #2 0x00007f9cafce975a in g_slice_alloc (mem_size=mem_size@entry=24) at ../../../glib/gslice.c:1015 #3 0x00007f9cafcee183 in g_string_sized_new (dfl_size=dfl_size@entry=2) at ../../../glib/gstring.c:121 #4 0x00007f9cafcee6b4 in g_string_new (init=init@entry=0x0) at ../../../glib/gstring.c:148 #5 0x00007f9cafcb5de1 in g_build_path_va (separator=separator@entry=0x7f9cafd1af0d "/", first_element=first_element@entry=0x55de896553d0 "/usr/share/applications", args=args@entry=0x7f9cacf65720, str_array=str_array@entry=0x0) at ../../../glib/gfileutils.c:1696 #6 0x00007f9cafcb72c5 in g_build_filename_va (str_array=0x0, args=0x7f9cacf65720, first_argument=<optimized out>) at ../../../glib/gfileutils.c:2069 #7 0x00007f9cafcb72c5 in g_build_filename (first_element=first_element@entry=0x55de896553d0 "/usr/share/applications") at ../../../glib/gfileutils.c:2069 #8 0x00007f9caff9e9f8 in g_local_file_new_from_dirname_and_basename (dirname=0x55de896553d0 "/usr/share/applications", basename=basename@entry=0x7f9ca8003b30 "libreoffice-xsltfilter.desktop.dpkg-tmp") at ../../../gio/glocalfile.c:242 #9 0x00007f9caffa48fa in g_file_monitor_source_queue_event (fms=fms@entry=0x55de89653f10, event_type=event_type@entry=G_FILE_MONITOR_EVENT_DELETED, child=0x7f9ca8003b30 "libreoffice-xsltfilter.desktop.dpkg-tmp", other=other@entry=0x0) at ../../../gio/glocalfilemonitor.c:233 #10 0x00007f9caffa5479 in g_file_monitor_source_send_event (other=0x0, child=<optimized out>, event_type=G_FILE_MONITOR_EVENT_DELETED, fms=0x55de89653f10) at ../../../gio/glocalfilemonitor.c:319 #11 0x00007f9caffa5479 in g_file_monitor_source_handle_event (fms=0x55de89653f10, event_type=event_type@entry=G_FILE_MONITOR_EVENT_DELETED, child=<optimized out>, rename_to=<optimized out>, rename_to@entry=0x0, other=other@entry=0x0, event_time=62010549077) at ../../../gio/glocalfilemonitor.c:439 #12 0x00007f9caffb0559 in ih_event_callback (event=0x7f9ca80038d0, sub=0x55de895ec050, file_event=<optimized out>) at ../../../gio/inotify/inotify-helper.c:206 #13 0x00007f9caffafadc in ip_event_dispatch (dir_list=dir_list@entry=0x55de896702c0 = {...}, file_list=0x0, event=event@entry=0x7f9ca80038d0) at ../../../gio/inotify/inotify-path.c:492 #14 0x00007f9caffafc96 in ip_event_dispatch (event=0x7f9ca80038d0, file_list=<optimized out>, dir_list=0x55de896702c0 = {...}) at ../../../gio/inotify/inotify-path.c:547 #15 0x00007f9caffafc96 in ip_event_callback (event=0x7f9ca80038d0) at ../../../gio/inotify/inotify-path.c:547 #16 0x00007f9caffafc96 in ip_event_callback (event=event@entry=0x7f9ca80038d0) at ../../../gio/inotify/inotify-path.c:529 #17 0x00007f9caffaefe9 in ik_source_dispatch (source=0x55de895fded0, func=0x7f9caffafbe0 <ip_event_callback>, user_data=<optimized out>) at ../../../gio/inotify/inotify-kernel.c:324 #18 0x00007f9cafccb898 in g_main_dispatch (context=0x55de89548380) at ../../../glib/gmain.c:3189 #19 0x00007f9cafccb898 in g_main_context_dispatch (context=context@entry=0x55de89548380) at ../../../glib/gmain.c:3854 #20 0x00007f9cafccbc88 in g_main_context_iterate (context=context@entry=0x55de89548380, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3927 #21 0x00007f9cafccbd1c in g_main_context_iteration (context=0x55de89548380, may_block=may_block@entry=1) at ../../../glib/gmain.c:3988 #22 0x00007f9cafccbd61 in glib_worker_main (data=<optimized out>) at ../../../glib/gmain.c:5868 #23 0x00007f9cafcf489d in g_thread_proxy (data=0x55de89513630) at ../../../glib/gthread.c:805 #24 0x00007f9cafc63fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486 #25 0x00007f9cafb944cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 I hope this is helpful. Regard, Jun