Bug 376528

Summary: crash in QRasterPaintEngine::alphaPenBlt
Product: [Plasma] plasmashell Reporter: Ryan Swart <serjndestroy>
Component: generic-crashAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: crash CC: bshah, jayfitzpatrick, notmart, ola, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.8.5   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description Ryan Swart 2017-02-16 04:19:49 UTC 
Application: plasmashell (5.8.5)

Qt Version: 5.7.1
Frameworks Version: 5.30.0
Operating System: Linux 4.4.45-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Listening to Spotify whilst browsing the web

- Unusual behavior I noticed:
A prompt-window appeared stating that Spotify is using an invalid SSL certificate, clicking through to more details produced a normal window with overlapping text, at which point Plasma crashed.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9af256a800 (LWP 1222))]

Thread 11 (Thread 0x7f9a07fff700 (LWP 26304)):
#0  0x00007f9ae6f3ddb9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9ae6ef7c95 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef86ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f99f6ebf700 (LWP 24165)):
#0  0x00007f9adeea398c in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#1  0x00007f9adeea420a in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#2  0x00007f9adf51599c in pa_mainloop_dispatch () at /usr/lib/libpulse.so.0
#3  0x00007f9adf515d9c in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f9adf515e40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f9adf523e29 in  () at /usr/lib/libpulse.so.0
#6  0x00007f9adeeb3fe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#7  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f9a0f24e700 (LWP 24164)):
#0  0x00007f9aebc6a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f9ae6ef8786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9aef6c0e75 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f9a21485700 (LWP 3034)):
#0  0x00007f9aebc6a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f9ae6ef8786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9a23d570a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f9a396a0700 (LWP 2841)):
#0  0x00007f9aebc6a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f9ae6ef8786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aed68ba37 in QDialog::exec() () at /usr/lib/libQt5Widgets.so.5
#6  0x00007f9aea3208f3 in KIO::JobUiDelegate::requestMessageBox(KIO::JobUiDelegateExtension::MessageBoxType, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, KIO::MetaData const&) () at /usr/lib/libKF5KIOWidgets.so.5
#7  0x00007f9ae5a356d1 in  () at /usr/lib/libKF5KIOCore.so.5
#8  0x00007f9aec565099 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#9  0x00007f9aed49d35c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#10 0x00007f9aed4a4ad1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f9aec538a40 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#12 0x00007f9aec53b1cd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f9aec58d063 in  () at /usr/lib/libQt5Core.so.5
#14 0x00007f9ae6ef8587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#15 0x00007f9ae6ef87f0 in  () at /usr/lib/libglib-2.0.so.0
#16 0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#17 0x00007f9aec58d46f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#18 0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#20 0x00007f9af02614b6 in  () at /usr/lib/libQt5Quick.so.5
#21 0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#22 0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#23 0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f9ad0d7f700 (LWP 2294)):
#0  0x00007f9aeb47310f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9af1d0d1f4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f9af1d0d239 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f9ad2bb4700 (LWP 1332)):
#0  0x00007f9ae6f3ddd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9ae6ef7c7c in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef86ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f9aef6c0e75 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f9ad3fff700 (LWP 1303)):
#0  0x00007f9ae6ef5757 in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9ae6ef7c2b in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef86ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f9aef6c0e75 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f9ada0b1700 (LWP 1244)):
#0  0x00007f9ae6ef7d6d in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9ae6ef86ab in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9aec58d48b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aec359053 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f9aed0d4de5 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f9adbce3700 (LWP 1234)):
#0  0x00007f9aebc6a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f9af0c338e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f9af0c35679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f9adda20789 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f9aec35dce8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f9aeb46d454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f9aebc737df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f9af256a800 (LWP 1222)):
[KCrash Handler]
#6  0x00007f9aeccc2741 in QRasterPaintEngine::alphaPenBlt(void const*, int, int, int, int, int, int) () at /usr/lib/libQt5Gui.so.5
#7  0x00007f9aecccac2e in QRasterPaintEngine::drawCachedGlyphs(int, unsigned int const*, QFixedPoint const*, QFontEngine*) () at /usr/lib/libQt5Gui.so.5
#8  0x00007f9aecccec07 in QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) () at /usr/lib/libQt5Gui.so.5
#9  0x00007f9aecceb216 in  () at /usr/lib/libQt5Gui.so.5
#10 0x00007f9aecb6a2b1 in QTextLine::draw(QPainter*, QPointF const&, QTextLayout::FormatRange const*) const () at /usr/lib/libQt5Gui.so.5
#11 0x00007f9aecb6b0ad in QTextLayout::draw(QPainter*, QPointF const&, QVector<QTextLayout::FormatRange> const&, QRectF const&) const () at /usr/lib/libQt5Gui.so.5
#12 0x00007f9aecba9172 in  () at /usr/lib/libQt5Gui.so.5
#13 0x00007f9aecbaafe7 in  () at /usr/lib/libQt5Gui.so.5
#14 0x00007f9aecbaa955 in  () at /usr/lib/libQt5Gui.so.5
#15 0x00007f9aecbb5399 in QTextDocumentLayout::draw(QPainter*, QAbstractTextDocumentLayout::PaintContext const&) () at /usr/lib/libQt5Gui.so.5
#16 0x00007f9aed66814c in QWidgetTextControl::drawContents(QPainter*, QRectF const&, QWidget*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f9aed5d3a26 in QLabel::paintEvent(QPaintEvent*) () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f9aed4e49f8 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#19 0x00007f9aed5cd0ee in QFrame::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007f9aed49d35c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007f9aed4a4ad1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#22 0x00007f9aec538a40 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#23 0x00007f9aed4dd75a in QWidgetPrivate::sendPaintEvent(QRegion const&) () at /usr/lib/libQt5Widgets.so.5
#24 0x00007f9aed4dddc6 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#25 0x00007f9aed4deacc in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#27 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#28 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#29 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#30 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#31 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#32 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#33 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#34 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#35 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#36 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#37 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#38 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#42 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#43 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#44 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#45 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#46 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#47 0x00007f9aed4dd924 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#48 0x00007f9aed4deacc in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#49 0x00007f9aed4de9b9 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#50 0x00007f9aed4dd924 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/libQt5Widgets.so.5
#51 0x00007f9aed4ad70a in  () at /usr/lib/libQt5Widgets.so.5
#52 0x00007f9aed4ade55 in  () at /usr/lib/libQt5Widgets.so.5
#53 0x00007f9aed5010fc in  () at /usr/lib/libQt5Widgets.so.5
#54 0x00007f9aed501b33 in  () at /usr/lib/libQt5Widgets.so.5
#55 0x00007f9aed49d35c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#56 0x00007f9aed4a4ad1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#57 0x00007f9aec538a40 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#58 0x00007f9aeca7f64d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/libQt5Gui.so.5
#59 0x00007f9aeca8025d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#60 0x00007f9aeca5e15b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#61 0x00007f9adda56da0 in  () at /usr/lib/libQt5XcbQpa.so.5
#62 0x00007f9ae6ef8587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#63 0x00007f9ae6ef87f0 in  () at /usr/lib/libglib-2.0.so.0
#64 0x00007f9ae6ef889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#65 0x00007f9aec58d46f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#66 0x00007f9aec536e9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#67 0x00007f9aec53f39c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#68 0x000000000041c9d2 in  ()
#69 0x00007f9aebbab291 in __libc_start_main () at /usr/lib/libc.so.6
#70 0x000000000041cd5a in _start ()

Reported using DrKonqi
Comment 1 Ola Røer Thorsen 2017-06-01 13:33:19 UTC 
I'm getting this crash every 5 minutes or so now, if anyone need to test anything let me know.
Comment 2 Christoph Feck 2017-06-07 13:44:14 UTC 
The crash is in the Qt libraries. If this is reproducible with Qt 5.9.0, please report a backtrace with debug symbols to Qt developers via https://bugreports.qt.io/
Comment 3 Jason Fitzpatrick 2020-08-04 09:00:13 UTC 
Created attachment 130622 [details]
New crash information added by DrKonqi

plasmashell (5.18.5) using Qt 5.14.2

- What I was doing when the application crashed:

- Unusual behavior I noticed:

Playing spotify (spotify-client-1.1.26.501-1.fc31.x86_64) 
Get an error in relation to i.ytimg.com cert error, Click on More information - KDE Crashes, 
Manual Respawn 
kquitapp5 plasmashell
kstart5 plasmashell

Cert error will re-appear after a few moments, repeating above will crash KDE again, choosing to permenantly accept the certificate will remove alert and system will not crash.

-- Backtrace (Reduced):
#5  0x00007f38ce3413bb in QRasterPaintEngine::drawCachedGlyphs(int, unsigned int const*, QFixedPoint const*, QFontEngine*) () from /lib64/libQt5Gui.so.5
#6  0x00007f38ce3446f2 in QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) () from /lib64/libQt5Gui.so.5
#7  0x00007f38ce35d752 in QPainterPrivate::drawTextItem(QPointF const&, QTextItem const&, QTextEngine*) () from /lib64/libQt5Gui.so.5
#8  0x00007f38ce1ff3a2 in QTextLine::draw(QPainter*, QPointF const&, QTextLayout::FormatRange const*) const () from /lib64/libQt5Gui.so.5
#9  0x00007f38ce353c10 in qt_format_text(QFont const&, QRectF const&, int, QTextOption const*, QString const&, QRectF*, int, int*, int, QPainter*) () from /lib64/libQt5Gui.so.5