Bug 352864

Application: plasmashell (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.1.0-2-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
- What I was doing when the application crashed:
Every day, after entering the sddm lock screen, the message that PlasmaShell has crashed appears. The PlasmaShell has been restarted by the system.

PlasmaShell usualy crashes during working sessions and I have to kill it and restart it manually.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2101997940 (LWP 2761))]

Thread 8 (Thread 0x7f20eca55700 (LWP 2762)):
#0  0x00007f20fc15b52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2100185252 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2100186ddf in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f20ee56d2f9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007f20fc84425e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f20fb9640a4 in start_thread (arg=0x7f20eca55700) at pthread_create.c:309
#6  0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7f20e619e700 (LWP 2763)):
#0  0x00007f20f8f19f70 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f20f8f1c39b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f20f8f1cde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f20f8f1cfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f20fca7ae4b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f20fca212ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f20fc83f374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f20ff04e055 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f20fc84425e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f20fb9640a4 in start_thread (arg=0x7f20e619e700) at pthread_create.c:309
#10 0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f20daff3700 (LWP 2764)):
#0  0x00007f20f8f1c5b0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f20f8f1cde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f20f8f1cfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f20fca7ae4b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f20fca212ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f20fc83f374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f20ff04e055 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f20fc84425e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f20fb9640a4 in start_thread (arg=0x7f20daff3700) at pthread_create.c:309
#9  0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f20d3fff700 (LWP 2768)):
#0  0x00007f20f8f61734 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f20f8f1c8b9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f20f8f1ce60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f20f8f1cfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f20fca7ae4b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f20fca212ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f20fc83f374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f20ff04e055 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f20fc84425e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f20fb9640a4 in start_thread (arg=0x7f20d3fff700) at pthread_create.c:309
#10 0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f20d2bd7700 (LWP 2769)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21013f5144 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f21013f5189 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f20fb9640a4 in start_thread (arg=0x7f20d2bd7700) at pthread_create.c:309
#4  0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f2047fff700 (LWP 2770)):
#0  0x00007f20fc15b52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f20f8f1cebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f20f8f1cfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f20fca7ae4b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f20fca212ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f20fc83f374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f20ff9cbc26 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f20fc84425e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f20fb9640a4 in start_thread (arg=0x7f2047fff700) at pthread_create.c:309
#9  0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f2037333700 (LWP 2774)):
#0  0x00007f20fc15b52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f20f8f1cebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f20f8f1cfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f20fca7ae4b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f20fca212ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f20fc83f374 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f20395e7a77 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f20fc84425e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f20fb9640a4 in start_thread (arg=0x7f2037333700) at pthread_create.c:309
#9  0x00007f20fc16406d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f2101997940 (LWP 2761)):
[KCrash Handler]
#6  0x00007f20ffefbc96 in Plasma::Applet::actions() const () from /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#7  0x0000000000454f72 in ShellCorona::addOutput (this=this@entry=0x26f2d00, output=...) at ../../shell/shellcorona.cpp:862
#8  0x000000000045510f in ShellCorona::outputEnabledChanged (this=0x26f2d00) at ../../shell/shellcorona.cpp:756
#9  0x00007f20fca54187 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2100b71d61 in KScreen::Output::apply(QSharedPointer<KScreen::Output> const&) () from /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#11 0x00007f2100b60835 in KScreen::Config::apply(QSharedPointer<KScreen::Config> const&) () from /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#12 0x00007f2100b66c29 in KScreen::ConfigMonitor::Private::updateConfigs(QSharedPointer<KScreen::Config> const&) () from /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#13 0x00007f2100b6887d in KScreen::ConfigMonitor::Private::edidReady(QDBusPendingCallWatcher*) () from /usr/lib/x86_64-linux-gnu/libKF5Screen.so.6
#14 0x00007f20fca54187 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f2101b220df in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#16 0x00007f2101b237e5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#17 0x00007f20fca551c1 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f20fd501b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f20fd507230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f20fca23a8b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f20fca25bc7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f20fca7aa23 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f20f8f1cc3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f20f8f1cf20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f20f8f1cfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f20fca7ae2f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f20fca212ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f20fca28e3c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00000000004322c3 in main (argc=1, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 351562, bug 351507, bug 347764, bug 347747, bug 344783.

Reported using DrKonqi