https://bugs.kde.org/show_bug.cgi?id=502853
Bug ID: 502853
Summary: Crash in PlasmaQuick::PlasmaWindow::resizeEvent when
tricking the hover preview into having the wrong size
Classification: Plasma
Product: plasmashell
Version: 6.3.4
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Task Manager and Icons-Only Task Manager widgets
Assignee: plasma-b...@kde.org
Reporter: adam.m.fontenot+...@gmail.com
CC: qydwhotm...@gmail.com
Target Milestone: 1.0
Created attachment 180304
--> https://bugs.kde.org/attachment.cgi?id=180304&action=edit
screencast of issue
SUMMARY
I managed to do this in a completely reproducible way, and even got a screen
recording.
STEPS TO REPRODUCE
1. Get one preview bar to be really big - I opened enough Firefox windows to
span the width of the screen in the preview.
2. Have another app with two windows open next to the big one on the taskbar.
3. Open the hover preview for the app with many windows open, and quickly
switch to hovering over the app with two windows open.
OBSERVED RESULT
The hover preview appears to be tricked into showing the wrong size modal
window, and something involved in resizing it causes a crash in PlasmaQuick.
Sometimes the size of the hover modal gets stuck for even longer, e.g. after
plasmashell restarts, and I can immediately crash it again by hovering over the
same icon (KWrite in the recording).
It might be related to this other taskbar crash which is similarly in the guts
of the Qml runtime: https://bugs.kde.org/show_bug.cgi?id=491699
EXPECTED RESULT
No crash
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.9.0
Kernel Version: 6.14.2-arch1-1 (64-bit)
Graphics Platform: Wayland
ADDITIONAL INFORMATION
Trying to install the debug symbols resulted in an error message: "Cannot QML
trace cores :("
Crashing thread:
Thread 1 (Thread 0x7e2f5a721a40 (LWP 43803)):
[KCrash Handler]
#4 0x00007e2f5fb7d04e in ??? () at /usr/lib/libQt6QmlModels.so.6
#5 0x00007e2f5fbcf1a1 in ??? () at /usr/lib/libQt6QmlModels.so.6
#6 0x00007e2f5fbe55db in ??? () at /usr/lib/libQt6QmlModels.so.6
#7 0x00007e2f5fbcadbb in QQmlDelegateModel::drainReusableItemsPool(int) () at
/usr/lib/libQt6QmlModels.so.6
#8 0x00007e2f62aa44ea in QQuickListView::geometryChange(QRectF const&, QRectF
const&) () at /usr/lib/libQt6Quick.so.6
#9 0x00007e2f627aabfd in QQuickItem::setSize(QSizeF const&) () at
/usr/lib/libQt6Quick.so.6
#10 0x00007e2f596d21e6 in QQuickControlPrivate::resizeContent() () at
/usr/lib/libQt6QuickTemplates2.so.6
#11 0x00007e2f596d761a in QQuickControl::geometryChange(QRectF const&, QRectF
const&) () at /usr/lib/libQt6QuickTemplates2.so.6
#12 0x00007e2f627aabfd in QQuickItem::setSize(QSizeF const&) () at
/usr/lib/libQt6Quick.so.6
#13 0x00007e2f627ce909 in ??? () at /usr/lib/libQt6Quick.so.6
#14 0x00007e2f627ced58 in QQuickLoader::geometryChange(QRectF const&, QRectF
const&) () at /usr/lib/libQt6Quick.so.6
#15 0x00007e2f627aabfd in QQuickItem::setSize(QSizeF const&) () at
/usr/lib/libQt6Quick.so.6
#16 0x00007e2f63999c95 in PlasmaQuick::PlasmaWindow::resizeEvent(QResizeEvent*)
() at /usr/lib/libPlasmaQuick.so.6
#17 0x00007e2f615f5530 in QWindow::event(QEvent*) () at /usr/lib/libQt6Gui.so.6
#18 0x00007e2f62efed9e in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt6Widgets.so.6
#19 0x00007e2f60d5a018 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt6Core.so.6
#20 0x00007e2f6158997d in
QGuiApplicationPrivate::processGeometryChangeEvent(QWindowSystemInterfacePrivate::GeometryChangeEvent*)
() at /usr/lib/libQt6Gui.so.6
#21 0x00007e2f615fb23a in void
QWindowSystemInterface::handleGeometryChange<QWindowSystemInterface::SynchronousDelivery>(QWindow*,
QRect const&) () at /usr/lib/libQt6Gui.so.6
#22 0x00007e2f61eab67b in QtWaylandClient::QWaylandWindow::setGeometry(QRect
const&) () at /usr/lib/libQt6WaylandClient.so.6
#23 0x00007e2f615f0aea in QWindow::resize(QSize const&) () at
/usr/lib/libQt6Gui.so.6
#24 0x00007e2f4018e97d in ??? () at
/usr/lib/qt6/qml/org/kde/plasma/core/libcorebindingsplugin.so
#25 0x00007e2f60db6cc9 in ??? () at /usr/lib/libQt6Core.so.6
#26 0x00007e2f627a9da1 in QQuickItem::setImplicitHeight(double) () at
/usr/lib/libQt6Quick.so.6
#27 0x00007e2f627a0f38 in QQuickItemPrivate::implicitHeightChanged() () at
/usr/lib/libQt6Quick.so.6
#28 0x00007e2f627a9da1 in QQuickItem::setImplicitHeight(double) () at
/usr/lib/libQt6Quick.so.6
#29 0x00007e2f62260f63 in ??? () at /usr/lib/libQt6Qml.so.6
#30 0x00007e2f622796c2 in ??? () at /usr/lib/libQt6Qml.so.6
#31 0x00007e2f6227c99d in
QQmlBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&,
QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) () at /usr/lib/libQt6Qml.so.6
#32 0x00007e2f62273c6e in
QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at
/usr/lib/libQt6Qml.so.6
#33 0x00007e2f6230189c in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*,
void**) () at /usr/lib/libQt6Qml.so.6
#34 0x00007e2f60db69ca in ??? () at /usr/lib/libQt6Core.so.6
#35 0x00007e2f6278d7ef in ??? () at /usr/lib/libQt6Quick.so.6
#36 0x00007e2f627973ca in QQuickItem::geometryChange(QRectF const&, QRectF
const&) () at /usr/lib/libQt6Quick.so.6
#37 0x00007e2f627a9c60 in QQuickItem::setHeight(double) () at
/usr/lib/libQt6Quick.so.6
#38 0x00007e2f627b8df9 in QQuickItem::qt_metacall(QMetaObject::Call, int,
void**) () at /usr/lib/libQt6Quick.so.6
#39 0x00007e2f62260fbf in ??? () at /usr/lib/libQt6Qml.so.6
#40 0x00007e2f62323fa4 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData
const&, QVariant const&, QQmlRefPointer<QQmlContextData> const&,
QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt6Qml.so.6
#41 0x00007e2f62325c72 in QQmlPropertyPrivate::writeValueProperty(QVariant
const&, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt6Qml.so.6
#42 0x00007e2f629967f4 in ??? () at /usr/lib/libQt6Quick.so.6
#43 0x00007e2f6241318d in QAbstractAnimationJob::setCurrentTime(int) () at
/usr/lib/libQt6Qml.so.6
#44 0x00007e2f624134d0 in QQmlAnimationTimer::updateAnimationsTime(long long)
() at /usr/lib/libQt6Qml.so.6
#45 0x00007e2f60eb4b21 in QUnifiedTimer::updateAnimationTimers() () at
/usr/lib/libQt6Core.so.6
#46 0x00007e2f60ebdd92 in QAnimationDriver::advanceAnimation() () at
/usr/lib/libQt6Core.so.6
#47 0x00007e2f62a55817 in ??? () at /usr/lib/libQt6Quick.so.6
#48 0x00007e2f62efed9e in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt6Widgets.so.6
#49 0x00007e2f60d5a018 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt6Core.so.6
#50 0x00007e2f60ede200 in QTimerInfoList::activateTimers() () at
/usr/lib/libQt6Core.so.6
#51 0x00007e2f60fcfe29 in ??? () at /usr/lib/libQt6Core.so.6
#52 0x00007e2f5f8fa1e4 in ??? () at /usr/lib/libglib-2.0.so.0
#53 0x00007e2f5f95de97 in ??? () at /usr/lib/libglib-2.0.so.0
#54 0x00007e2f5f8f9615 in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#55 0x00007e2f60fcd59d in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt6Core.so.6
#56 0x00007e2f60d65376 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt6Core.so.6
#57 0x00007e2f60d5d159 in QCoreApplication::exec() () at
/usr/lib/libQt6Core.so.6
#58 0x00006055a59111cb in ??? ()
#59 0x00007e2f60635488 in ??? () at /usr/lib/libc.so.6
#60 0x00007e2f6063554c in __libc_start_main () at /usr/lib/libc.so.6
#61 0x00006055a59116d5 in ??? ()
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