[dragonplayer] [Bug 435576] New: Crash when resume from nonstandard resume

Sat Apr 10 14:08:28 BST 2021

https://bugs.kde.org/show_bug.cgi?id=435576

            Bug ID: 435576
           Summary: Crash when resume from nonstandard resume
           Product: dragonplayer
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: pv.bugzilla at gmail.com
                CC: myriam at kde.org, sitter at kde.org
  Target Milestone: ---

Application: dragon (19.12.1)

Qt Version: 5.14.2
Frameworks Version: 5.75.0
Operating System: Linux 5.11.7-100.fc32.x86_64 x86_64
Windowing system: X11
Distribution: Fedora 32 (KDE Plasma)

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

Best I can recall, application was not actively playing media, but was open
when I suspended the system. Suspend was atypical; as KDE screen was locked
when I wanted to resume I tried to switch to the new user login screen and
suspend from there. Resuming later, KDE came back in a partially functional
state: I could interact with the top level window but not switch windows except
by closing the windows on top. (desktop switching also not functioning) 

However Dragon was the only app which crashed, so perhaps there is something
less robust about the app. Hope the backtrace gives some insight to improve its
stability. 

- Unusual behavior I noticed:
Notification that app had crashed.

-- Backtrace:
Application: Dragon Player (dragon), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f79b36ec940 (LWP 127123))]

Thread 3 (Thread 0x7f79a4b8c700 (LWP 127125)):
#0  0x00007f79b70a586f in poll () at /lib64/libc.so.6
#1  0x00007f79b5fe8aae in g_main_context_iterate.constprop () at
/lib64/libglib-2.0.so.0
#2  0x00007f79b5fe8be3 in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3  0x00007f79b7754abb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#4  0x00007f79b770783b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#5  0x00007f79b7573417 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f79b85f351b in QDBusConnectionManager::run() () at
/lib64/libQt5DBus.so.5
#7  0x00007f79b7574680 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#8  0x00007f79b6966432 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f79b70b06d3 in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f79a644f700 (LWP 127124)):
#0  0x00007f79b70a586f in poll () at /lib64/libc.so.6
#1  0x00007f79b692338a in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f79b692571a in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f79a65f0c68 in QXcbEventQueue::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f79b7574680 in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#5  0x00007f79b6966432 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f79b70b06d3 in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f79b36ec940 (LWP 127123)):
[KCrash Handler]
#4  0x00007f79b7578fef in QThreadStorageData::get() const () at
/lib64/libQt5Core.so.5
#5  0x00007f79b7b221fc in QOpenGLContext::currentContext() () at
/lib64/libQt5Gui.so.5
#6  0x00007f79b7af9a50 in QSurface::~QSurface() () at /lib64/libQt5Gui.so.5
#7  0x00007f79b7af791f in QWindow::~QWindow() () at /lib64/libQt5Gui.so.5
#8  0x00007f79b80ff410 in QWidgetWindow::~QWidgetWindow() () at
/lib64/libQt5Widgets.so.5
#9  0x00007f79b80d604f in QWidgetPrivate::deleteTLSysExtra() () at
/lib64/libQt5Widgets.so.5
#10 0x00007f79b80dba88 in QWidget::destroy(bool, bool) () at
/lib64/libQt5Widgets.so.5
#11 0x00007f79b80e2ae2 in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#12 0x00007f79a41571d1 in Phonon::Gstreamer::OverlayWidget::~OverlayWidget() ()
at /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#13 0x00007f79a4156bb1 in Phonon::Gstreamer::X11Renderer::~X11Renderer() () at
/usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#14 0x00007f79a4151bed in Phonon::Gstreamer::VideoWidget::~VideoWidget() () at
/usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#15 0x00007f79a4151c4d in Phonon::Gstreamer::VideoWidget::~VideoWidget() () at
/usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#16 0x00007f79b8c3c718 in Phonon::MediaNodePrivate::deleteBackendObject() () at
/lib64/libphonon4qt5.so.4
#17 0x00007f79b8c29d11 in Phonon::FactoryPrivate::~FactoryPrivate() () at
/lib64/libphonon4qt5.so.4
#18 0x00007f79b8c29f6f in Phonon::._anon_392::destroy() () at
/lib64/libphonon4qt5.so.4
#19 0x00007f79b6fee197 in __run_exit_handlers () at /lib64/libc.so.6
#20 0x00007f79b6fee340 in on_exit () at /lib64/libc.so.6
#21 0x00007f79b5a1fffe in  () at /lib64/libICE.so.6
#22 0x00007f79b5a25b3c in _IceRead () at /lib64/libICE.so.6
#23 0x00007f79b5a29de3 in IceProcessMessages () at /lib64/libICE.so.6
#24 0x00007f79b7737ed0 in void doActivate<false>(QObject*, int, void**) () at
/lib64/libQt5Core.so.5
#25 0x00007f79b773ae6c in QSocketNotifier::activated(int,
QSocketNotifier::QPrivateSignal) () at /lib64/libQt5Core.so.5
#26 0x00007f79b773b211 in QSocketNotifier::event(QEvent*) () at
/lib64/libQt5Core.so.5
#27 0x00007f79b80a6063 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib64/libQt5Widgets.so.5
#28 0x00007f79b7708ee0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib64/libQt5Core.so.5
#29 0x00007f79b7755507 in socketNotifierSourceDispatch(_GSource*, int
(*)(void*), void*) () at /lib64/libQt5Core.so.5
#30 0x00007f79b5fe878f in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#31 0x00007f79b5fe8b18 in g_main_context_iterate.constprop () at
/lib64/libglib-2.0.so.0
#32 0x00007f79b5fe8be3 in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#33 0x00007f79b7754aa3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#34 0x00007f79b770783b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#35 0x00007f79b770f4c6 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#36 0x000055c4a1c45ab6 in main ()
[Inferior 1 (process 127123) detached]

Possible duplicates by query: bug 424475, bug 421429, bug 409579, bug 404273.

Reported using DrKonqi

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