Bug 391065

Application: plasmashell (5.12.2)

Qt Version: 5.10.0
Frameworks Version: 5.43.0
Operating System: Linux 4.15.4-041504-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
Only kwin appears.

Plasmashell can be started using "alt+F2" without problems.

Two External Monitors are connected. Laptop screen is deactivated (docking station in use).

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 0x7f604f2618c0 (LWP 12326))]

Thread 6 (Thread 0x7f5f996b3700 (LWP 12502)):
#0  0x00007f6043530cea in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6043531330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f604353149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f604921a5cb in QEventDispatcherGlib::processEvents (this=0x7f5f940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f60491c164a in QEventLoop::exec (this=this@entry=0x7f5f996b2c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f6048fe1554 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f604cd031c6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f6048fe66eb in QThreadPrivate::start (arg=0x20e1eb0) at thread/qthread_unix.cpp:376
#8  0x00007f6047e8b6ba in start_thread (arg=0x7f5f996b3700) at pthread_create.c:333
#9  0x00007f60488f341d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f60261c4700 (LWP 12489)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f604e9e3db4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f604e9e3df9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f6047e8b6ba in start_thread (arg=0x7f60261c4700) at pthread_create.c:333
#4  0x00007f60488f341d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f6034891700 (LWP 12378)):
#0  0x00007f60488e774d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f604353138c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f604353149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f604921a5cb in QEventDispatcherGlib::processEvents (this=0x7f602c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f60491c164a in QEventLoop::exec (this=this@entry=0x7f6034890ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f6048fe1554 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f604c152a35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f6048fe66eb in QThreadPrivate::start (arg=0x1874e60) at thread/qthread_unix.cpp:376
#8  0x00007f6047e8b6ba in start_thread (arg=0x7f6034891700) at pthread_create.c:333
#9  0x00007f60488f341d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f6036528700 (LWP 12377)):
#0  0x00007f60488e774d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f604353138c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f604353149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f604921a5cb in QEventDispatcherGlib::processEvents (this=0x7f60280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f60491c164a in QEventLoop::exec (this=this@entry=0x7f6036527ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f6048fe1554 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f604c152a35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f6048fe66eb in QThreadPrivate::start (arg=0x17f5540) at thread/qthread_unix.cpp:376
#8  0x00007f6047e8b6ba in start_thread (arg=0x7f6036528700) at pthread_create.c:333
#9  0x00007f60488f341d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6037f5e700 (LWP 12358)):
#0  0x00007f60488e327d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f60435746f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6043530e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6043531330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f604353149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f604921a5cb in QEventDispatcherGlib::processEvents (this=0x7f60300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f60491c164a in QEventLoop::exec (this=this@entry=0x7f6037f5dcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007f6048fe1554 in QThread::exec (this=this@entry=0x7f60498b1d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:522
#8  0x00007f604963d2c5 in QDBusConnectionManager::run (this=0x7f60498b1d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#9  0x00007f6048fe66eb in QThreadPrivate::start (arg=0x7f60498b1d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:376
#10 0x00007f6047e8b6ba in start_thread (arg=0x7f6037f5e700) at pthread_create.c:333
#11 0x00007f60488f341d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f604f2618c0 (LWP 12326)):
[KCrash Handler]
#6  QScreen::name (this=this@entry=0x16b70e0) at kernel/qscreen.cpp:160
#7  0x0000000000446e48 in ShellCorona::load (this=this@entry=0x176c440) at /workspace/build/shell/shellcorona.cpp:696
#8  0x000000000044754a in ShellCorona::load (this=0x176c440) at /workspace/build/shell/shellcorona.cpp:642
#9  0x00007f60491f07b6 in QtPrivate::QSlotObjectBase::call (a=0x7ffd61218b40, r=0x176c440, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:378
#10 QMetaObject::activate (sender=0x1746940, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffd61218b40) at kernel/qobject.cpp:3749
#11 0x00007f60491f0d97 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f604e586b60 <KActivities::Consumer::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffd61218b40) at kernel/qobject.cpp:3628
#12 0x00007f604e3777b1 in KActivities::Consumer::serviceStatusChanged (this=<optimized out>, _t1=KActivities::Consumer::Running) at /workspace/build/obj-x86_64-linux-gnu/src/lib/moc_consumer.cpp:248
#13 0x00007f604e378e6b in KActivities::Consumer::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/src/lib/moc_consumer.cpp:114
#14 0x00007f60491f0489 in QMetaObject::activate (sender=sender@entry=0x17401d0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=8, argv=argv@entry=0x7ffd61218cd0) at kernel/qobject.cpp:3766
#15 0x00007f60491f0d97 in QMetaObject::activate (sender=sender@entry=0x17401d0, m=m@entry=0x7f604e586c20 <KActivities::ActivitiesCache::staticMetaObject>, local_signal_index=local_signal_index@entry=8, argv=argv@entry=0x7ffd61218cd0) at kernel/qobject.cpp:3628
#16 0x00007f604e377671 in KActivities::ActivitiesCache::serviceStatusChanged (this=this@entry=0x17401d0, _t1=_t1@entry=KActivities::Consumer::Running) at /workspace/build/obj-x86_64-linux-gnu/src/lib/moc_activitiescache_p.cpp:407
#17 0x00007f604e370a23 in KActivities::ActivitiesCache::setAllActivities (this=this@entry=0x17401d0, _activities=...) at /workspace/build/src/lib/activitiescache_p.cpp:300
#18 0x00007f604e370c98 in KActivities::ActivitiesCache::passInfoFromReply<QList<ActivityInfo>, void (KActivities::ActivitiesCache::*)(QList<ActivityInfo> const&)> (f=(void (KActivities::ActivitiesCache::*)(KActivities::ActivitiesCache * const, const QList<ActivityInfo> &)) 0x7f604e370850 <KActivities::ActivitiesCache::setAllActivities(QList<ActivityInfo> const&)>, watcher=0x173fdb0, this=<optimized out>) at /workspace/build/src/lib/activitiescache_p.cpp:211
#19 KActivities::ActivitiesCache::setAllActivitiesFromReply (this=<optimized out>, watcher=0x173fdb0) at /workspace/build/src/lib/activitiescache_p.cpp:226
#20 0x00007f604e3780b4 in KActivities::ActivitiesCache::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/src/lib/moc_activitiescache_p.cpp:200
#21 0x00007f60491f0489 in QMetaObject::activate (sender=0x173fdb0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd61218ff0) at kernel/qobject.cpp:3766
#22 0x00007f60491f0d97 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f60498b05e0 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd61218ff0) at kernel/qobject.cpp:3628
#23 0x00007f6049694bff in QDBusPendingCallWatcher::finished (this=<optimized out>, _t1=0x173fdb0) at .moc/moc_qdbuspendingcall.cpp:153
#24 0x00007f6049694cf8 in QDBusPendingCallWatcherPrivate::_q_finished (this=<optimized out>) at qdbuspendingcall.cpp:494
#25 QDBusPendingCallWatcher::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qdbuspendingcall.cpp:85
#26 0x00007f60491f14c9 in QObject::event (this=0x173fdb0, e=<optimized out>) at kernel/qobject.cpp:1246
#27 0x00007f604a18facc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x173fdb0, e=0x1704c50) at kernel/qapplication.cpp:3732
#28 0x00007f604a197417 in QApplication::notify (this=0x7ffd612196f0, receiver=0x173fdb0, e=0x1704c50) at kernel/qapplication.cpp:3491
#29 0x00007f60491c33c8 in QCoreApplication::notifyInternal2 (receiver=0x173fdb0, event=event@entry=0x1704c50) at kernel/qcoreapplication.cpp:1044
#30 0x00007f60491c5fcb in QCoreApplication::sendEvent (event=0x1704c50, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1681be0) at kernel/qcoreapplication.cpp:1719
#32 0x00007f60491c6438 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1573
#33 0x00007f604921afa3 in postEventSourceDispatch (s=0x16bd220) at kernel/qeventdispatcher_glib.cpp:276
#34 0x00007f6043531197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f60435313f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f604353149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f604921a5af in QEventDispatcherGlib::processEvents (this=0x171a4a0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#38 0x00007f603a5b2a91 in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#39 0x00007f60491c164a in QEventLoop::exec (this=this@entry=0x7ffd612195b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#40 0x00007f60491ca854 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1332
#41 0x00007f60499df83c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1687
#42 0x00007f604a18fa25 in QApplication::exec () at kernel/qapplication.cpp:2917
#43 0x000000000041cdac in main (argc=1, argv=<optimized out>) at /workspace/build/shell/main.cpp:166

The reporter indicates this bug may be a duplicate of or related to bug 390092.

Possible duplicates by query: bug 390171, bug 390092, bug 385342, bug 379085.

Reported using DrKonqi