Application: kcmshell5 (5.14.5)

Qt Version: 5.11.3
Frameworks Version: 5.54.0
Operating System: Linux 4.19.0-8-amd64 x86_64
Distribution: Debian GNU/Linux 10 (buster)

-- Information about the crash:
- What I was doing when the application crashed:

Every time I try to open the "Connections" part of the System Settings program, it crashes. This happens both when I open the System Settings program itself, and try to open the Connection settings bit from there, or if I try to open it from the "Configure network connections..." button in the network system tray thing. This used to work perfectly fine before, and I haven't changed any settings since then. It's been quite some time since I had to use this dialog though.

It might be worth noting that I have 5 ethernet connections on this machine. One built-in to the motherboard (Intel I219-V), plus a PCI-e card with 4 connections (Broadcom NetXtreme II BCM5709).

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings Module (kcmshell5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6e06dc7840 (LWP 18261))]

Thread 4 (Thread 0x7f6df7fff700 (LWP 18264)):
#0  0x00007f6e099b5e84 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6e0996b65c in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6e0996c06b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e0996c25c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6e0bc8c743 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6e0bc3a15b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6e0ba89e76 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6e0b126c65 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f6e0ba93a67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f6e0a8cffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f6e0d0a24cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f6dfff0b700 (LWP 18263)):
#0  0x00007f6e0d093494 in __GI___libc_read (nbytes=16, buf=0x7f6dfff0ab10, fd=7) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f6e0d093494 in __GI___libc_read (fd=7, buf=0x7f6dfff0ab10, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f6e099b1aa0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e0996bc0f in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6e0996c0e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6e0996c25c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f6e0bc8c743 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6e0bc3a15b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6e0ba89e76 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f6e0cb65545 in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f6e0ba93a67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f6e0a8cffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#12 0x00007f6e0d0a24cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f6e05de9700 (LWP 18262)):
#0  0x00007f6e0d097819 in __GI___poll (fds=0x7f6e05de8c78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6e0a577cf7 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6e0a57991a in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6e06952d79 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f6e0ba93a67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6e0a8cffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f6e0d0a24cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f6e06dc7840 (LWP 18261)):
[KCrash Handler]
#6  0x00007f6e0cfe07bb in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f6e0cfcb535 in __GI_abort () at abort.c:79
#8  0x00007f6e0ba529a7 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f6e0b40dc9d in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f6e0b40ed65 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f6e0b40f615 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f6e0bff3205 in QWindow::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f6e0b4892db in QQuickWindow::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f6e0c5b64c1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f6e0c5bd970 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f6e0bc3b489 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f6e0bfe8253 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f6e0bfe8efd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f6e0bfc306b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f6e069e940b in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f6e0bc3a15b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f6e0bc42132 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f6e0d1735a3 in kdemain () at /lib/x86_64-linux-gnu/libkdeinit5_kcmshell5.so
#24 0x00007f6e0cfcd09b in __libc_start_main (main=0x564bed98e050, argc=2, argv=0x7ffeaec02de8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeaec02dd8) at ../csu/libc-start.c:308
#25 0x0000564bed98e08a in _start ()
[Inferior 1 (process 18261) detached]

Reported using DrKonqi