Problem description

I'm experiencing random hangs and codedump of the whole lxterminal. It happens most frequently when I copy text by double-clicking left mouse button. It is not consistently reproducible. I would say it happens ~1% of the time.

Here is the stacktrace I found in journal from the most recent crash:

Mar 07 16:14:25 laptop systemd-coredump[5495]: Process 4767 (lxterminal) of user 1000 dumped core.

                                               Stack trace of thread 4767:
                                               #0  0x00007f3376d1ceab raise (libc.so.6)
                                               #1  0x00007f3376d075b9 abort (libc.so.6)
                                               #2  0x00007f3376d07491 __assert_fail_base.cold.0 (libc.so.6)
                                               #3  0x00007f3376d15612 __assert_fail (libc.so.6)
                                               #4  0x00007f337751939a poll_for_event (libX11.so.6)
                                               #5  0x00007f337751943e poll_for_response (libX11.so.6)
                                               #6  0x00007f3377519735 _XEventsQueued (libX11.so.6)
                                               #7  0x00007f337751c3f8 _XData32 (libX11.so.6)
                                               #8  0x00007f33774f5d0c XChangeProperty (libX11.so.6)
                                               #9  0x00007f33793fde25 gdk_window_set_icon_list (libgdk-x11-2.0.so.0)
                                               #10 0x00007f33798d3e95 gtk_window_realize_icon (libgtk-x11-2.0.so.0)
                                               #11 0x00007f33798d9b97 gtk_window_realize (libgtk-x11-2.0.so.0)
                                               #12 0x00007f3377fc1c8d g_closure_invoke (libgobject-2.0.so.0)
                                               #13 0x00007f3377fd5386 signal_emit_unlocked_R (libgobject-2.0.so.0)
                                               #14 0x00007f3377fde30a g_signal_emit_valist (libgobject-2.0.so.0)
                                               #15 0x00007f3377fde903 g_signal_emit (libgobject-2.0.so.0)
                                               #16 0x00007f33798cc7a4 gtk_widget_realize (libgtk-x11-2.0.so.0)
                                               #17 0x00007f33798d7be8 gtk_window_show (libgtk-x11-2.0.so.0)
                                               #18 0x00007f3377fc1c8d g_closure_invoke (libgobject-2.0.so.0)
                                               #19 0x00007f3377fd5386 signal_emit_unlocked_R (libgobject-2.0.so.0)
                                               #20 0x00007f3377fde30a g_signal_emit_valist (libgobject-2.0.so.0)
                                               #21 0x00007f3377fde903 g_signal_emit (libgobject-2.0.so.0)
                                               #22 0x00007f33798cbd96 gtk_widget_show (libgtk-x11-2.0.so.0)
                                               #23 0x000055e67e631c91 lxterminal_initialize (lxterminal)
                                               #24 0x000055e67e62c9ea handle_request (lxterminal)
                                               #25 0x00007f3379d2291d g_main_context_dispatch (libglib-2.0.so.0)
                                               #26 0x00007f3379d22ce8 g_main_context_iterate.isra.21 (libglib-2.0.so.0)
                                               #27 0x00007f3379d23012 g_main_loop_run (libglib-2.0.so.0)
                                               #28 0x00007f337978e95f gtk_main (libgtk-x11-2.0.so.0)
                                               #29 0x000055e67e62c7bb main (lxterminal)
                                               #30 0x00007f3376d0911b __libc_start_main (libc.so.6)
                                               #31 0x000055e67e62c7fa _start (lxterminal)

                                               Stack trace of thread 4770:
                                               #0  0x00007f3376dd5429 __poll (libc.so.6)
                                               #1  0x00007f3379d22c56 g_main_context_iterate.isra.21 (libglib-2.0.so.0)
                                               #2  0x00007f3379d22d80 g_main_context_iteration (libglib-2.0.so.0)
                                               #3  0x00007f3379d22dd1 glib_worker_main (libglib-2.0.so.0)
                                               #4  0x00007f3379d4b01a g_thread_proxy (libglib-2.0.so.0)
                                               #5  0x00007f33770ac594 start_thread (libpthread.so.0)
                                               #6  0x00007f3376ddff4f __clone (libc.so.6)

                                               Stack trace of thread 4775:
                                               #0  0x00007f3376dd5429 __poll (libc.so.6)
                                               #1  0x00007f3379d22c56 g_main_context_iterate.isra.21 (libglib-2.0.so.0)
                                               #2  0x00007f3379d23012 g_main_loop_run (libglib-2.0.so.0)
                                               #3  0x00007f337873485a gdbus_shared_thread_func (libgio-2.0.so.0)
                                               #4  0x00007f3379d4b01a g_thread_proxy (libglib-2.0.so.0)
                                               #5  0x00007f33770ac594 start_thread (libpthread.so.0)
                                               #6  0x00007f3376ddff4f __clone (libc.so.6)

...
Mar 07 16:14:26 laptop abrt-notification[5586]: Process 18557 (lxterminal) crashed in _nl_load_domain.cold.0()

If the problem is not in your code, can you tell me on which project should I open the ticket ? I cannot decypher it from the stacktrace.

Versions:

lxterminal-0.3.2-1.fc28.x86_64
libX11-1.6.5-7.fc28.x86_64
Linux laptop 4.17.18-200.fc28.x86_64 #1 SMP Wed Aug 22 19:08:07 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Additional info:

it started happening after upgrading from LXDE Fedora 26? to 28.
AFAIK, I have just basic lxterminal customization (scrollback lines increased, hidden some UI elements, etc)
I usually disable the default clipit app after OS installation (I will try to have it running, just to see if it happens again)
it never hangs on "paste" (middle button). Only "copy" is the problem.

lxde / lxterminal

random freeze/crash when copying text with mouse #68

Problem description