Application: gwenview (20.12.1)

Qt Version: 5.15.2
Frameworks Version: 5.79.0
Operating System: Linux 5.8.0-33-generic x86_64
Windowing System: X11
Drkonqi Version: 5.20.90
Distribution: KDE neon Testing Edition

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

 I'm viewing a photo using Gwenview. I needed  to control my phone's music playback via KDE Connect in the system tray. So I tried to click the play/pause button in the Media Player controls, but instead on playing/pausing the phone's playback. The running Gwenview somehow crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault

[New LWP 2715]
[New LWP 2716]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f591c318aff in __GI___poll (fds=0x7ffd9edf8368, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f591677f040 (LWP 2713))]

Thread 3 (Thread 0x7f590ec14700 (LWP 2716)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a08c0ef990) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a08c0ef940, cond=0x55a08c0ef968) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a08c0ef968, mutex=0x55a08c0ef940) at pthread_cond_wait.c:638
#3  0x00007f591c6abd1b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f591e44eb59 in Gwenview::ThumbnailGenerator::run (this=0x55a08c0f5e70) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#5  0x00007f591c6a5bac in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f591a9df609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007f591c325293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5914a37700 (LWP 2715)):
#0  0x00007f591c318aff in __GI___poll (fds=0x7f59080129a0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f591a1071ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f591a1072e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f591c8e5fbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f591c88a1ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f591c6a4a12 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f591c0b8f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f591c6a5bac in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f591a9df609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f591c325293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f591677f040 (LWP 2713)):
[KCrash Handler]
#4  QExplicitlySharedDataPointer<KSharedConfig>::~QExplicitlySharedDataPointer (this=0x7ffd9edf8b80, __in_chrg=<optimized out>) at /usr/include/c++/9/bits/atomic_base.h:326
#5  0x00007f5914ad0ea8 in QExplicitlySharedDataPointer<KSharedConfig>::operator= (other=..., this=<optimized out>) at /usr/include/c++/9/bits/move.h:182
#6  Breeze::AppListener::eventFilter (this=0x55a08c076de0, watched=<optimized out>, event=<optimized out>) at ./kstyle/breezetoolsareamanager.cpp:152
#7  0x00007f591c88b2ce in QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f591d599e00 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f591d5a2bb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f591c88b69a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f591c8c1156 in QObject::setProperty(char const*, QVariant const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x000055a08a5429db in Gwenview::MainWindow::toggleFullScreen (this=0x55a08c0a8680, checked=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:116
#13 0x00007f591c8c26be in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f591d5938e6 in QAction::triggered(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f591d595fb8 in QAction::activate(QAction::ActionEvent) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x000055a08a5414c2 in QAction::trigger (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtWidgets/qaction.h:187
#17 Gwenview::MainWindow::toggleSlideShow (this=0x55a08c0a8680) at ./app/mainwindow.cpp:1504
#18 0x000055a08a512c60 in Gwenview::MainWindow::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/app/gwenview_autogen/EWIEGA46WW/moc_mainwindow.cpp:221
#19 0x00007f591c8c26f0 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f591d5938e6 in QAction::triggered(bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f591d595fb8 in QAction::activate(QAction::ActionEvent) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f591e47dcec in QAction::trigger (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtWidgets/qaction.h:187
#23 Gwenview::MprisMediaPlayer2Player::Play (this=<optimized out>) at ./lib/mpris2/mprismediaplayer2player.cpp:164
#24 0x0000000000000000 in ?? ()
[Inferior 1 (process 2713) detached]

Reported using DrKonqi