G_DEBUG=fatal-criticals jhbuild run gdb gnome-control-center
GNU gdb (GDB) Fedora 8.0.1-33.fc27
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from gnome-control-center...done.
(gdb) r
Starting program: /home/fborges/jhbuild/install/bin/gnome-control-center 
Missing separate debuginfos, use: dnf debuginfo-install glibc-2.26-24.fc27.x86_64
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Missing separate debuginfo for /lib64/libwbclient.so.0
Try: dnf --enablerepo='*debug*' install /usr/lib/debug/.build-id/21/07f5d2b27364e8d46dd03e83ef9302d8f35d22.debug
[New Thread 0x7fffce039700 (LWP 1004)]
[New Thread 0x7fffc62be700 (LWP 1006)]
[New Thread 0x7fffc5abd700 (LWP 1007)]
Gtk-Message: 13:07:39.144: Failed to load module "canberra-gtk-module"
Gtk-Message: 13:07:39.145: Failed to load module "canberra-gtk-module"
[New Thread 0x7fffbe442700 (LWP 1008)]
[New Thread 0x7fffbdc41700 (LWP 1009)]
[New Thread 0x7fffbcd6f700 (LWP 1010)]
[New Thread 0x7fffaa7aa700 (LWP 1013)]
Detaching after fork from child process 1014.

(gnome-control-center:1000): Gtk-WARNING **: 13:07:40.315: Negative content width -172 (allocation 40, extents 192x20) while allocating gadget (node box, owner GtkBox)
[New Thread 0x7fffa9d29700 (LWP 1029)]
[Thread 0x7fffbcd6f700 (LWP 1010) exited]
[Thread 0x7fffaa7aa700 (LWP 1013) exited]
[Thread 0x7fffbdc41700 (LWP 1009) exited]
[New Thread 0x7fffbdc41700 (LWP 1036)]
[New Thread 0x7fffaa7aa700 (LWP 1039)]
[New Thread 0x7fffbcd6f700 (LWP 1048)]
[New Thread 0x7fffa9528700 (LWP 1059)]
[New Thread 0x7fffa8d27700 (LWP 1068)]
[Thread 0x7fffbdc41700 (LWP 1036) exited]

(gnome-control-center:1000): GStreamer-CRITICAL **: 13:07:49.598: Trying to stop a GstDeviceProvider v4l2deviceprovider0 which is already stopped

Thread 1 "gnome-control-c" received signal SIGTRAP, Trace/breakpoint trap.
_g_log_abort (breakpoint=breakpoint@entry=1) at /home/fborges/checkout/glib/glib/gmessages.c:583
583	}
Missing separate debuginfos, use: dnf debuginfo-install cracklib-2.9.6-7.fc27.x86_64 cups-libs-2.2.4-8.fc27.x86_64 gnutls-3.5.17-1.fc27.x86_64 lcms2-2.8-5.fc27.x86_64 libXxf86vm-1.1.4-6.fc27.x86_64 libcanberra-0.30-15.fc27.x86_64 libcanberra-gtk3-0.30-15.fc27.x86_64 libcrypt-nss-2.26-24.fc27.x86_64 libdrm-2.4.89-1.fc27.x86_64 libevdev-1.5.7-3.fc27.x86_64 libgcrypt-1.8.2-1.fc27.x86_64 libldb-1.3.1-1.fc27.x86_64 libpciaccess-0.13.4-6.fc27.x86_64 libpwquality-1.4.0-3.fc27.x86_64 libseccomp-2.3.3-1.fc27.x86_64 libsmbclient-4.7.4-2.fc27.x86_64 libtalloc-2.1.11-1.fc27.x86_64 libtasn1-4.13-1.fc27.x86_64 libtdb-1.3.15-2.fc27.x86_64 libtevent-0.9.35-1.fc27.x86_64 libtool-ltdl-2.4.6-20.fc27.x86_64 libv4l-1.12.5-5.fc27.x86_64 libwbclient-4.7.4-2.fc27.x86_64 libxshmfence-1.2-6.fc27.x86_64 mesa-dri-drivers-17.2.4-3.fc27.x86_64 mesa-libGL-17.2.4-3.fc27.x86_64 mesa-libgbm-17.2.4-3.fc27.x86_64 mesa-libglapi-17.2.4-3.fc27.x86_64 mesa-libwayland-egl-17.2.4-3.fc27.x86_64 mtdev-1.1.5-9.fc27.x86_64 orc-0.4.28-1.fc27.x86_64 pcre-8.41-4.fc27.x86_64 polkit-libs-0.113-15.fc27.x86_64 samba-client-libs-4.7.4-2.fc27.x86_64 samba-common-libs-4.7.4-2.fc27.x86_64 webkitgtk4-2.18.5-1.fc27.x86_64 webkitgtk4-jsc-2.18.5-1.fc27.x86_64
(gdb) bt full
#0  _g_log_abort (breakpoint=breakpoint@entry=1) at /home/fborges/checkout/glib/glib/gmessages.c:583
        debugger_present = 1
#1  0x00007ffff7517346 in g_logv (log_domain=0x7fffe9a0b5c0 <g_log_domain_gstreamer> "GStreamer", log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>, args=args@entry=0x7fffffffd1a8)
    at /home/fborges/checkout/glib/glib/gmessages.c:1391
        domain = 0x0
        data = 0x0
        depth = 1
        log_func = 0x7fffe9967990 <debug_log_handler>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = 0
        test_level = 10
        was_fatal = 0
        was_recursion = 0
        msg = 0x1882970 "Trying to stop a GstDeviceProvider v4l2deviceprovider0 which is already stopped"
        msg_alloc = 0x1882970 "Trying to stop a GstDeviceProvider v4l2deviceprovider0 which is already stopped"
        i = 3
#2  0x00007ffff7517492 in g_log (log_domain=<optimized out>, log_level=log_level@entry=G_LOG_LEVEL_CRITICAL, format=format@entry=0x7fffe9a13c20 "Trying to stop a GstDeviceProvider %s which is already stopped")
    at /home/fborges/checkout/glib/glib/gmessages.c:1432
        args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fffffffd280, reg_save_area = 0x7fffffffd1c0}}
#3  0x00007fffe998e1fe in gst_device_provider_stop (provider=0xfec300) at ../../../../jhbuild/checkout/gstreamer/gst/gstdeviceprovider.c:496
        klass = 0x7fffac0088a0
        __func__ = "gst_device_provider_stop"
#4  0x00007fffe999e33a in gst_device_monitor_stop (monitor=0x7fffa4001910) at ../../../../jhbuild/checkout/gstreamer/gst/gstdevicemonitor.c:571
        provider = 0xfec300
        i = <optimized out>
        started = 0xc1e880
        __func__ = "gst_device_monitor_stop"
#5  0x00007ffff4be720b in cheese_camera_device_monitor_finalize (object=0x11d71a0) at /home/fborges/checkout/cheese/libcheese/cheese-camera-device-monitor.c:232
No locals.
#6  0x00007ffff77ee469 in g_object_unref (_object=0x11d71a0) at /home/fborges/checkout/glib/gobject/gobject.c:3338
        weak_locations = <optimized out>
        object = 0x11d71a0
        old_ref = <optimized out>
        object = 0x11d71a0
#7  0x00007ffff7abd1d2 in g_task_finalize (object=0x19551e0) at /home/fborges/checkout/glib/gio/gtask.c:634
        _pp = {in = 0x19551f8 "", out = 0x19551f8}
        _p = <optimized out>
        task = 0x19551e0
#8  0x00007ffff77ee469 in g_object_unref (_object=0x19551e0) at /home/fborges/checkout/glib/gobject/gobject.c:3338
        weak_locations = <optimized out>
        object = 0x19551e0
        old_ref = <optimized out>
        object = 0x19551e0
#9  0x00007ffff750d373 in g_source_callback_unref (cb_data=0x7fffa40034e0) at /home/fborges/checkout/glib/glib/gmain.c:1546
        callback = 0x7fffa40034e0
        cb_data = 0x7fffa40034e0
        callback = 0x7fffa40034e0
#10 0x00007ffff750eb64 in g_source_destroy_internal (source=0x7fffa40012b0, context=0xa2a950, have_lock=1) at /home/fborges/checkout/glib/glib/gmain.c:1236
        tmp_list = <optimized out>
        old_cb_data = 0x7fffa40034e0
        old_cb_funcs = 0x7ffff77d88e0 <g_source_callback_funcs>
---Type <return> to continue, or q <return> to quit---
#11 0x00007ffff7510840 in g_main_dispatch (context=0xa2a950) at /home/fborges/checkout/glib/glib/gmain.c:3201
        dispatch = 0x7ffff750d310 <g_idle_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x19551e0
        callback = 0x7ffff7abce10 <complete_in_idle_cb>
        cb_funcs = 0x7ffff77d88e0 <g_source_callback_funcs>
        cb_data = 0x7fffa40034e0
        need_destroy = <optimized out>
        source = 0x7fffa40012b0
        current = 0xa6b750
        i = 1
#12 g_main_context_dispatch (context=context@entry=0xa2a950) at /home/fborges/checkout/glib/glib/gmain.c:3830
No locals.
#13 0x00007ffff7510b08 in g_main_context_iterate (context=context@entry=0xa2a950, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /home/fborges/checkout/glib/glib/gmain.c:3903
        max_priority = 2147483647
        timeout = 379
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 9
        fds = 0xec9690
#14 0x00007ffff7510b8c in g_main_context_iteration (context=context@entry=0xa2a950, may_block=may_block@entry=1) at /home/fborges/checkout/glib/glib/gmain.c:3964
        retval = <optimized out>
#15 0x00007ffff7ad348d in g_application_run (application=0xe39140, argc=argc@entry=1, argv=argv@entry=0x7fffffffd618) at /home/fborges/checkout/glib/gio/gapplication.c:2482
        arguments = 0xfed590
        status = 0
        context = 0xa2a950
        acquired_context = <optimized out>
        __func__ = "g_application_run"
#16 0x000000000044c247 in main (argc=<optimized out>, argv=<optimized out>) at ../../../../jhbuild/checkout/gnome-control-center/shell/main.c:57
        application = 0xe39140
(gdb) 

