Bug 444053

Application: plasmashell (5.23.0)

Qt Version: 5.15.3
Frameworks Version: 5.87.0
Operating System: Linux 5.11.0-38-generic x86_64
Windowing System: Wayland
Distribution: KDE neon User - Plasma 25th Anniversary Edition
DrKonqi: 5.23.0 [KCrashBackend]

-- Information about the crash:
- What I was doing when the application crashed: I had just update to 5.23.0, plasma crash at start up, on the screen appear just "Latte"bar, other is black


- Unusual behavior I noticed:

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[New LWP 1398]
[New LWP 1445]
[New LWP 1446]
[New LWP 1447]
[New LWP 1448]
[New LWP 1511]
[New LWP 1521]
[New LWP 1532]
[New LWP 1549]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007faf22b97aff in __GI___poll (fds=0x7ffe2a377678, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
____drkonqi_qmltrace_thread:1____
Failed to do pygdbmi parsing: No module named 'pygdbmi'
frame={level="0",func="expression for target",file="/usr/share/plasma/plasmoids/org.kde.plasma.kickoff/contents/ui/Kickoff.qml",fullname="/usr/share/plasma/plasmoids/org.kde.plasma.kickoff/cont".
---------------------------------
(beware that frames may have been optimized out)

[Current thread is 1 (Thread 0x7faf1ecec9c0 (LWP 1327))]

Thread 10 (Thread 0x7faef5e80700 (LWP 1549)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ce0f5627c4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ce0f562770, cond=0x55ce0f562798) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ce0f562798, mutex=0x55ce0f562770) at pthread_cond_wait.c:647
#3  0x00007faf22f2c59b in QWaitConditionPrivate::wait (deadline=..., this=0x55ce0f562770) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=this@entry=0x55ce10361f08, mutex=mutex@entry=0x55ce10361f00, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007faf24b95b44 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x55ce10361ef8) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#6  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x55ce10361e60) at scenegraph/qsgthreadedrenderloop.cpp:936
#7  0x00007faf24b95fb9 in QSGRenderThread::run (this=0x55ce10361e60) at scenegraph/qsgthreadedrenderloop.cpp:1053
#8  0x00007faf22f2642c in QThreadPrivate::start (arg=0x55ce10361e60) at thread/qthread_unix.cpp:329
#9  0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7faef760e700 (LWP 1532)):
#0  0x00007faf23165e34 in QTimerInfoList::timerWait (this=<optimized out>, tm=...) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/kernel/qcore_unix_p.h:119
#1  0x00007faf23167346 in timerSourcePrepareHelper (timeout=0x7faef760d9d4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#2  timerSourcePrepare (source=<optimized out>, timeout=0x7faef760d9d4) at kernel/qeventdispatcher_glib.cpp:166
#3  0x00007faf214428ef in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faf2144329b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faf214434a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faf231675eb in QEventDispatcherGlib::processEvents (this=0x7faee8013300, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007faf2310b87b in QEventLoop::exec (this=this@entry=0x7faef760dba0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007faf22f25292 in QThread::exec (this=this@entry=0x55ce10085880) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007faf24ad03ba in QQuickPixmapReader::run (this=0x55ce10085880) at util/qquickpixmapcache.cpp:1024
#10 0x00007faf22f2642c in QThreadPrivate::start (arg=0x55ce10085880) at thread/qthread_unix.cpp:329
#11 0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7faef7ff6700 (LWP 1521)):
#0  __GI___libc_read (nbytes=16, buf=0x7faef7ff59d0, fd=19) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=19, buf=0x7faef7ff59d0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faf2148bb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf21442ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faf21443312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faf214434a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007faf231675eb in QEventDispatcherGlib::processEvents (this=0x7faef0000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007faf2310b87b in QEventLoop::exec (this=this@entry=0x7faef7ff5be0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007faf22f25292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007faf22f2642c in QThreadPrivate::start (arg=0x55ce0fd16750) at thread/qthread_unix.cpp:329
#10 0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7faf0f523700 (LWP 1511)):
#0  0x00007faf22b97aff in __GI___poll (fds=0x7faefc004e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faf2144336e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf214434a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf231675eb in QEventDispatcherGlib::processEvents (this=0x7faefc000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007faf2310b87b in QEventLoop::exec (this=this@entry=0x7faf0f522bc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007faf22f25292 in QThread::exec (this=this@entry=0x55ce0f3b1c00) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007faf24736549 in QQmlThreadPrivate::run (this=0x55ce0f3b1c00) at qml/ftw/qqmlthread.cpp:155
#7  0x00007faf22f2642c in QThreadPrivate::start (arg=0x55ce0f3b1c00) at thread/qthread_unix.cpp:329
#8  0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7faf10734700 (LWP 1448)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ce0f0c9a38) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ce0f0c99e8, cond=0x55ce0f0c9a10) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ce0f0c9a10, mutex=0x55ce0f0c99e8) at pthread_cond_wait.c:647
#3  0x00007faf16833e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faf16833a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7faf10f35700 (LWP 1447)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ce0f0c9a38) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ce0f0c99e8, cond=0x55ce0f0c9a10) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ce0f0c9a10, mutex=0x55ce0f0c99e8) at pthread_cond_wait.c:647
#3  0x00007faf16833e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faf16833a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7faf1cda1700 (LWP 1446)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ce0f0c9a38) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ce0f0c99e8, cond=0x55ce0f0c9a10) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ce0f0c9a10, mutex=0x55ce0f0c99e8) at pthread_cond_wait.c:647
#3  0x00007faf16833e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faf16833a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7faf1d5a2700 (LWP 1445)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ce0f0c9a38) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ce0f0c99e8, cond=0x55ce0f0c9a10) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ce0f0c9a10, mutex=0x55ce0f0c99e8) at pthread_cond_wait.c:647
#3  0x00007faf16833e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faf16833a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7faf1e342700 (LWP 1398)):
#0  0x00007faf2143f8b0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007faf21441345 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf2144282b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf2144329b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faf214434a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faf231675eb in QEventDispatcherGlib::processEvents (this=0x7faf18000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007faf2310b87b in QEventLoop::exec (this=this@entry=0x7faf1e341bb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#7  0x00007faf22f25292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007faf23a98f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007faf22f2642c in QThreadPrivate::start (arg=0x7faf23b1cd80) at thread/qthread_unix.cpp:329
#10 0x00007faf21e75609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007faf22ba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7faf1ecec9c0 (LWP 1327)):
[KCrash Handler]
#4  0x00007faf2467eadb in QQmlObjectCreator::requiredProperties (this=<optimized out>) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/qml/qqmlobjectcreator_p.h:136
#5  QQmlComponentPrivate::requiredProperties (this=this@entry=0x55ce10c73a40) at qml/qqmlcomponent.cpp:344
#6  0x00007faf246824a8 in QQmlComponentPrivate::completeCreate (this=0x55ce10c73a40) at qml/qqmlcomponent.cpp:1071
#7  0x00007faf2466f950 in QQmlEnginePrivate::singletonInstance<QJSValue> (this=this@entry=0x55ce0f127c90, type=...) at qml/qqmlengine.cpp:2526
#8  0x00007faf2456b463 in QQmlEnginePrivate::singletonInstance<QObject*> (type=..., this=0x55ce0f127c90) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/qml/qqmlengine_p.h:463
#9  QV4::QQmlContextWrapper::getPropertyAndBase (resource=0x7faf0e8e4578, id=..., receiver=<optimized out>, hasProperty=<optimized out>, base=0x0, lookup=0x55ce10c533d0) at jsruntime/qv4qmlcontext.cpp:236
#10 0x00007faf2456b73c in QV4::QQmlContextWrapper::resolveQmlContextPropertyLookupGetter (l=0x55ce10c533d0, engine=0x55ce0f35b490, base=0x0) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/common/qv4staticvalue_p.h:325
#11 0x00007faf245b196c in QV4::Moth::VME::interpret (frame=0x7ffe2a378730, engine=0x55ce0f35b490, code=0x7faedf146f55 "\030\006\002@") at jsruntime/qv4vme_moth.cpp:585
#12 0x00007faf245b711f in QV4::Moth::VME::exec (frame=frame@entry=0x7ffe2a378730, engine=engine@entry=0x55ce0f35b490) at jsruntime/qv4vme_moth.cpp:463
#13 0x00007faf245442fd in QV4::Function::call (this=this@entry=0x55ce10c5e900, thisObject=<optimized out>, argv=argv@entry=0x7faf0e8e4500, argc=<optimized out>, context=<optimized out>) at jsruntime/qv4function.cpp:69
#14 0x00007faf246e9fb7 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x55ce10c53df0, callData=callData@entry=0x7faf0e8e44d0, isUndefined=isUndefined@entry=0x7ffe2a37892f) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:343
#15 0x00007faf246efe13 in QQmlBinding::evaluate (this=this@entry=0x55ce10c53df0, isUndefined=isUndefined@entry=0x7ffe2a37892f) at ../../include/QtQml/5.15.3/QtQml/private/../../../../../src/qml/jsruntime/qv4jscall_p.h:95
#16 0x00007faf246f42ed in QQmlNonbindingBinding::doUpdate (this=0x55ce10c53df0, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:254
#17 0x00007faf246f1112 in QQmlBinding::update (this=0x55ce10c53df0, flags=...) at qml/qqmlbinding.cpp:194
#18 0x00007faf2470345e in QQmlObjectCreator::finalize (this=0x55ce10c4d640, interrupt=...) at qml/qqmlobjectcreator.cpp:1394
#19 0x00007faf24686e05 in QQmlIncubatorPrivate::incubate (this=0x55ce0f6db8f0, i=...) at qml/qqmlincubator.cpp:364
#20 0x00007faf24687376 in QQmlEnginePrivate::incubate (this=0x55ce0f127c90, i=..., forContext=forContext@entry=0x55ce0f6ca7e0) at qml/qqmlincubator.cpp:89
#21 0x00007faf24680afe in QQmlComponent::create (this=<optimized out>, incubator=..., context=<optimized out>, forContext=forContext@entry=0x0) at qml/qqmlcomponent.cpp:1178
#22 0x00007faf2513af51 in KDeclarative::QmlObject::completeInitialization (initialProperties=..., this=0x55ce0f6d04d0) at ./src/kdeclarative/qmlobject.cpp:307
#23 KDeclarative::QmlObject::completeInitialization (this=0x55ce0f6d04d0, initialProperties=...) at ./src/kdeclarative/qmlobject.cpp:289
#24 0x00007faf254e5833 in PlasmaQuick::AppletQuickItem::init() () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#25 0x00007faf1c337159 in AppletInterface::init (this=0x55ce0f6d05b0) at ./src/scriptengines/qml/plasmoid/appletinterface.cpp:141
#26 0x00007faf254e73f1 in PlasmaQuick::AppletQuickItem::itemChange(QQuickItem::ItemChange, QQuickItem::ItemChangeData const&) () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#27 0x00007faf24bd8ad5 in QQuickItemPrivate::itemChange (this=this@entry=0x55ce0f6c14d0, change=change@entry=QQuickItem::ItemSceneChange, data=...) at items/qquickitem.cpp:6310
#28 0x00007faf24bdcd8e in QQuickItemPrivate::refWindow (this=0x55ce0f6c14d0, c=0x55ce0ffd56a0) at items/qquickitem.h:186
#29 0x00007faf24bdcd4e in QQuickItemPrivate::refWindow (this=0x55ce0f6500d0, c=0x55ce0ffd56a0) at items/qquickitem.h:468
#30 0x00007faf24bdf024 in QQuickItem::setParentItem (this=0x55ce0f656cd0, parentItem=<optimized out>) at items/qquickitem.cpp:2716
#31 0x00007faf254f2e40 in ?? () from /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#32 0x000055ce0d876a7d in ShellCorona::createWaitingPanels (this=0x55ce0f12d2a0) at ./shell/shellcorona.cpp:1318
#33 0x00007faf23143d9e in QtPrivate::QSlotObjectBase::call (a=0x7ffe2a3793e0, r=0x55ce0f12d2a0, this=0x55ce0f15d5d0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#34 doActivate<false> (sender=0x55ce0f12d350, signal_index=3, argv=0x7ffe2a3793e0) at kernel/qobject.cpp:3886
#35 0x00007faf2313d167 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7faf233a8c80 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe2a3793e0) at kernel/qobject.cpp:3946
#36 0x00007faf231488de in QTimer::timeout (this=<optimized out>, _t1=...) at .moc/moc_qtimer.cpp:205
#37 0x00007faf2313a835 in QObject::event (this=0x55ce0f12d350, e=0x7ffe2a379710) at kernel/qobject.cpp:1336
#38 0x00007faf23e1cdc3 in QApplicationPrivate::notify_helper (this=this@entry=0x55ce0eedb510, receiver=receiver@entry=0x55ce0f12d350, e=e@entry=0x7ffe2a379710) at kernel/qapplication.cpp:3632
#39 0x00007faf23e25bb8 in QApplication::notify (this=0x7ffe2a379a70, receiver=0x55ce0f12d350, e=0x7ffe2a379710) at kernel/qapplication.cpp:3156
#40 0x00007faf2310cd7a in QCoreApplication::notifyInternal2 (receiver=0x55ce0f12d350, event=0x7ffe2a379710) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#41 0x00007faf23166920 in QTimerInfoList::activateTimers (this=0x55ce0ef05990) at kernel/qtimerinfo_unix.cpp:643
#42 0x00007faf23167254 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:183
#43 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:230
#44 0x00007faf2144317d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007faf21443400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007faf214434a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007faf231675d2 in QEventDispatcherGlib::processEvents (this=0x55ce0eef7510, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#48 0x00007faf2310b87b in QEventLoop::exec (this=this@entry=0x7ffe2a379950, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#49 0x00007faf23113a34 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#50 0x000055ce0d84fcf5 in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:238
[Inferior 1 (process 1327) detached]

Possible duplicates by query: bug 443838, bug 443780, bug 443738, bug 443708, bug 429585.

Reported using DrKonqi