491000 2024-07-29 20:29:28 +0000 System Monitor crashes in Breeze::WindowManager::registerQuickItem() if it is closed while choosing column filters 2026-06-10 17:44:47 +0000 1 1 4 Plasma Breeze QStyle 6.1.3 Fedora RPMs Linux RESOLVED FIXED NOR crash --- 1 farchord plasma-bugs-null ahiemstra cdimitri kalabankro kdedev nate nicolas.fella noahadvs plasma-bugs-null sw4 uhhadd https://invent.kde.org/plasma/breeze/-/commit/c5c48aa5c5a7fc18e306e97079f37406f09fb47b 6.7.0 https://crash-reports.kde.org/organizations/kde/issues/306825/events/5d687c9f51234d83ac808eded7df3822/ 0 oldest_to_newest 2341127 0 farchord 2024-07-29 20:29:28 +0000 SUMMARY STEPS TO REPRODUCE 1. Open System Monitor 2. On the main page, find the section with the currently running applications. 3. Right-click on the columns, and click on "Configure Columns..." 4. Close System Monitor by clicking on the X at the top right. OBSERVED RESULT Drkonqi will show a notification showing that the application crashed. EXPECTED RESULT No DrKonqi popup SOFTWARE/OS VERSIONS Operating System: Fedora Linux 40 KDE Plasma Version: 6.1.3 KDE Frameworks Version: 6.4.0 Qt Version: 6.7.2 Kernel Version: 6.9.11-200.fc40.x86_64 (64-bit) Graphics Platform: Wayland Processors: 24 × AMD Ryzen 9 7900X 12-Core Processor Memory: 62.2 GiB of RAM Graphics Processor: AMD Radeon RX 7900 XT Manufacturer: Gigabyte Technology Co., Ltd. Product Name: X670E AORUS PRO X System Version: -CF 2341147 1 nate 2024-07-29 21:12:43 +0000 Can reproduce on my Intel laptop with everything compiled from git master. Backtrace: #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44 #1 0x00007feeb50a8513 in __pthread_kill_internal (threadid=<optimized out>, signo=11) at pthread_kill.c:78 #2 0x00007feeb504fc4e in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26 #3 0x00007feeb84289eb in KCrash::defaultCrashHandler (sig=11) at /home/nate/kde/src/kcrash/src/kcrash.cpp:597 #4 0x00007feeb504fd00 in <signal handler called> () at /lib64/libc.so.6 #5 0x00007feeb75fcd91 in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::get (this=0x8) at /usr/include/qt6/QtCore/qscopedpointer.h:112 #6 qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > > (ptr=...) at /usr/include/qt6/QtCore/qtclasshelpermacros.h:79 #7 QQuickItem::d_func (this=0x0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #8 QQuickItem::setAcceptedMouseButtons (this=this@entry=0x0, buttons=buttons@entry=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.cpp:8040 #9 0x00007feea0435f23 in Breeze::WindowManager::registerQuickItem (this=0x28b70490, item=<optimized out>) at /usr/include/qt6/QtCore/qflags.h:74 #10 0x00007feea041ff4f in Breeze::Style::isQtQuickControl (option=<optimized out>, widget=0x0, this=<optimized out>) at /home/nate/kde/src/breeze/kstyle/breezestyle.cpp:8262 #11 Breeze::Style::isQtQuickControl (this=<optimized out>, option=0x29980860, widget=0x0) at /home/nate/kde/src/breeze/kstyle/breezestyle.cpp:8257 #12 Breeze::Style::pixelMetric (this=<optimized out>, metric=<optimized out>, option=0x29980860, widget=0x0) at /home/nate/kde/src/breeze/kstyle/breezestyle.cpp:677 #13 0x00007fee9ab57288 in KQuickStyleItem::initStyleOption (this=this@entry=0x2992c1b0) at /home/nate/kde/src/qqc2-desktop-style/plugin/kquickstyleitem.cpp:438 #14 0x00007fee9ab59d7e in KQuickStyleItem::updateRect (this=this@entry=0x2992c1b0) at /home/nate/kde/src/qqc2-desktop-style/plugin/kquickstyleitem.cpp:1351 #15 0x00007fee9ab5ddc0 in KQuickStyleItem::geometryChange (this=0x2992c1b0, newGeometry=..., oldGeometry=...) at /home/nate/kde/src/qqc2-desktop-style/plugin/kquickstyleitem.cpp:2089 #16 0x00007feeb75f746d in QQuickItem::setSize (this=0x2992c1b0, size=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.cpp:7684 #17 0x00007feea1ee96f8 in QQuickControlPrivate::resizeBackground (this=0x296c7f30) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickcontrol.cpp:363 #18 0x00007feea1ef47dd in QQuickControl::geometryChange (this=0x296c7e50, newGeometry=..., oldGeometry=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickcontrol.cpp:2093 #19 0x00007feeb75f5dd6 in QQuickItem::setWidth (this=this@entry=0x296c7e50, w=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.cpp:7300 #20 0x00007feea1f13695 in QQuickPagePrivate::relayout (this=0x296b1f80) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickpage.cpp:115 #21 0x00007feea1ef47e9 in QQuickControl::geometryChange (this=this@entry=0x296b16f0, newGeometry=..., oldGeometry=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickcontrol.cpp:2094 #22 0x00007feea1f255cd in QQuickPopupItem::geometryChange (this=0x296b16f0, newGeometry=..., oldGeometry=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickpopupitem.cpp:263 #23 0x00007feeb75f5dd6 in QQuickItem::setWidth (this=this@entry=0x296b16f0, w=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.cpp:7300 #24 0x00007feea1f272fb in QQuickPopupPositioner::reposition (this=0x296f2830) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickpopuppositioner.cpp:250 #25 0x00007feea1f1ddd1 in QQuickPopup::setParentItem (this=0x296add60, parent=0x2900e500) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickpopup.cpp:1852 #26 0x00007feeb63c4ceb in QQmlPropertyData::resetProperty (this=0x7fee7429ba70, target=0x296add60, flags=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlpropertydata_p.h:336 #27 QQmlPropertyPrivate::reset (object=0x296add60, property=..., flags=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlproperty.cpp:1733 #28 0x00007feeb63cc27b in QQmlPropertyPrivate::resetValueProperty (object=<optimized out>, core=..., valueTypeData=..., context=..., flags=..., flags@entry=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlproperty.cpp:1317 #29 0x00007feeb6300a58 in QQmlBinding::slowWrite (this=this@entry=0x296f1a10, core=..., valueTypeData=..., result=..., isUndefined=<optimized out>, flags=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlbinding.cpp:514 #30 0x00007feeb6303e68 in QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>)::{lambda()#1}::operator()() const (__closure=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlbinding.cpp:805 #31 QObjectPointerBinding::compareAndSet<QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>)::{lambda()#1}>(QQmlMetaObject const&, QObject*, QQmlPropertyData const*, QFlags<QQmlPropertyData::WriteFlag>, QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>)::{lambda()#1} const&) const (this=<optimized out>, resultMo=<optimized out>, resultObject=<optimized out>, pd=<optimized out>, flags=..., slowWrite=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlbinding.cpp:824 #32 QObjectPointerBinding::write (this=0x296f1a10, result=..., isUndefined=<optimized out>, flags=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlbinding.cpp:804 #33 0x00007feeb62fdfe1 in QQmlBinding::doUpdate (this=0x296f1a10, watcher=..., flags=..., scope=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlbinding.cpp:701 #34 0x00007feeb6301d18 in QQmlBinding::update (this=0x296f1a10, flags=...) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlbinding.cpp:164 #35 0x00007feeb639d195 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=0x0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlnotifier.cpp:70 #36 0x00007feeb57fc3ad in doActivate<false> (sender=0x296f2560, signal_index=9, argv=0x0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:3976 #37 0x00007feeb57f2b47 in QMetaObject::activate (sender=sender@entry=0x296f2560, m=m@entry=0x7feeb7af9ea0 <QQuickWindowAttached::staticMetaObject>, local_signal_index=local_signal_index@entry=6, argv=argv@entry=0x0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #38 0x00007feeb76bfdf7 in QQuickWindowAttached::windowChanged (this=this@entry=0x296f2560) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/redhat-linux-build/src/quick/Quick_autogen/include/moc_qquickwindowattached_p.cpp:331 #39 0x00007feeb76bfe59 in QQuickWindowAttached::windowChange (this=0x296f2560, window=0x0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickwindowattached.cpp:67 #40 0x00007feeb57fc872 in QtPrivate::QSlotObjectBase::call (this=0x296f2610, r=<optimized out>, a=0x7ffd44751df0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobjectdefs_impl.h:469 #41 doActivate<false> (sender=0x2900e500, signal_index=15, argv=0x7ffd44751df0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4086 #42 0x00007feeb57f2b47 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7feeb7af23c0 <QQuickItem::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffd44751df0) at /usr/src/debug/qt6-qtbase-6.7.2-4.fc40.x86_64/src/corelib/kernel/qobject.cpp:4146 #43 0x00007feeb75eb004 in QQuickItem::windowChanged (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/redhat-linux-build/src/quick/Quick_autogen/include/moc_qquickitem.cpp:1407 #44 0x00007feeb76012bc in QQuickItemPrivate::derefWindow (this=0x290dff80) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.cpp:3118 #45 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x29095020) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #46 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x290a9950) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #47 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x290ac760) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #48 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x294d0fb0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #49 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x290b3d30) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #50 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28ffc780) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #51 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x294296b0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #52 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28d42b10) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #53 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x2910a6c0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #54 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x29109f70) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #55 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x29126d90) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #56 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x291267e0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #57 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x2910bad0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #58 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x2928b970) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #59 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28c76a10) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #60 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28c767b0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #61 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28c73650) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #62 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28c6b7b0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #63 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28b02070) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #64 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=0x28a81620) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #65 0x00007feeb7601268 in QQuickItemPrivate::derefWindow (this=this@entry=0x28b8eef0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.h:487 #66 0x00007feeb7608cc6 in QQuickItem::~QQuickItem (this=this@entry=0x28c0cf40, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickitem.cpp:2382 #67 0x00007feeb76bba8d in QQuickRootItem::~QQuickRootItem (this=0x28c0cf40, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickwindow_p.h:62 #68 QQuickRootItem::~QQuickRootItem (this=0x28c0cf40, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickwindow_p.h:62 #69 0x00007feeb76b6c62 in QQuickWindow::~QQuickWindow (this=this@entry=0x28c0e990, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickwindow.cpp:1174 #70 0x00007feeb76c502e in QQuickWindowQmlImpl::~QQuickWindowQmlImpl (this=this@entry=0x28c0e990, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quick/items/qquickwindowmodule.cpp:62 #71 0x00007feea1edbdfd in QQuickApplicationWindow::~QQuickApplicationWindow (this=this@entry=0x28c0e990, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/quicktemplates/qquickapplicationwindow.cpp:321 #72 0x00007feea1f82369 in QQmlPrivate::QQmlElement<QQuickApplicationWindow>::~QQmlElement (this=0x28c0e990, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlprivate.h:100 #73 QQmlPrivate::QQmlElement<QQuickApplicationWindow>::~QQmlElement (this=0x28c0e990, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlprivate.h:100 #74 0x00007feeb62fb5ce in qDeleteAll<QList<QObject*>::const_iterator> (begin=..., end=...) at /usr/include/qt6/QtCore/qalgorithms.h:27 #75 qDeleteAll<QList<QObject*> > (c=...) at /usr/include/qt6/QtCore/qalgorithms.h:35 #76 QQmlApplicationEnginePrivate::cleanUp (this=this@entry=0x28bae9e0) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlapplicationengine.cpp:40 #77 0x00007feeb62fb60d in QQmlApplicationEngine::~QQmlApplicationEngine (this=this@entry=0x7ffd44752710, __in_chrg=<optimized out>) at /usr/src/debug/qt6-qtdeclarative-6.7.2-2.fc40.x86_64/src/qml/qml/qqmlapplicationengine.cpp:328 #78 0x000000000040b376 in main (argc=<optimized out>, argv=<optimized out>) at /home/nate/kde/src/plasma-systemmonitor/src/main.cpp:120 2341160 2 nicolas.fella 2024-07-29 23:13:33 +0000 Crashes with a different backtrace for me with Qt 6.8: #0 QWindow::mapToGlobal (this=0x0, pos=...) at /home/nico/workspace/qt6/qtbase/src/gui/kernel/qwindow.cpp:2917 #1 0x00007ffff6a06b3f in QQuickItem::mapToItem (this=this@entry=0x1894e00, item=0x9c3d90, point=...) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.cpp:8782 #2 0x00007fffe0d384c9 in QQuickPopupPositioner::reposition (this=0x1c7d900) at /home/nico/workspace/qt6/qtdeclarative/src/quicktemplates/qquickpopuppositioner.cpp:153 #3 0x00007fffe0d2e6f3 in QQuickPopup::setParentItem (this=0x1c37f80, parent=0x1894e00) at /home/nico/workspace/qt6/qtdeclarative/src/quicktemplates/qquickpopup.cpp:2123 #4 0x00007ffff61eb946 in QQmlPropertyData::resetProperty (this=0x7fff9c24c7a0, target=0x1c37f80, flags=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlpropertydata_p.h:336 #5 QQmlPropertyPrivate::reset (object=0x1c37f80, property=..., flags=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlproperty.cpp:1740 #6 0x00007ffff61f3eb3 in QQmlPropertyPrivate::resetValueProperty (object=<optimized out>, core=..., valueTypeData=..., context=..., flags=..., flags@entry=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlproperty.cpp:1317 #7 0x00007ffff61238c2 in QQmlBinding::slowWrite (this=this@entry=0x1c7c940, core=..., valueTypeData=..., result=..., isUndefined=<optimized out>, flags=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlbinding.cpp:516 #8 0x00007ffff6126a14 in QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>)::{lambda()#1}::operator()() const (__closure=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlbinding.cpp:808 #9 QObjectPointerBinding::compareAndSet<QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>)::{lambda()#1}>(QQmlMetaObject const&, QObject*, QQmlPropertyData const*, QFlags<QQmlPropertyData::WriteFlag>, QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>)::{lambda()#1} const&) const (this=<optimized out>, resultMo=<optimized out>, resultObject=<optimized out>, pd=<optimized out>, flags=..., slowWrite=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlbinding.cpp:827 #10 QObjectPointerBinding::write (this=0x1c7c940, result=..., isUndefined=<optimized out>, flags=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlbinding.cpp:807 #11 0x00007ffff6120e31 in QQmlBinding::doUpdate (this=0x1c7c940, watcher=..., flags=..., scope=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlbinding.cpp:704 #12 0x00007ffff61249a1 in QQmlBinding::update (this=0x1c7c940, flags=...) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlbinding.cpp:164 #13 0x00007ffff61c3613 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=0x0) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlnotifier.cpp:70 #14 0x00007ffff49fb5ed in doActivate<false> (sender=0x1c7d520, signal_index=9, argv=0x0) at /home/nico/workspace/qt6/qtbase/src/corelib/kernel/qobject.cpp:4010 #15 0x00007ffff49f2337 in QMetaObject::activate (sender=sender@entry=0x1c7d520, m=m@entry=0x7ffff6f62960 <QQuickWindowAttached::staticMetaObject>, local_signal_index=local_signal_index@entry=6, argv=argv@entry=0x0) at /home/nico/workspace/qt6/qtbase/src/corelib/kernel/qobject.cpp:4180 #16 0x00007ffff6acffe7 in QQuickWindowAttached::windowChanged (this=this@entry=0x1c7d520) at /home/nico/workspace/qt6/qtdeclarative/src/quick/Quick_autogen/include/moc_qquickwindowattached_p.cpp:331 #17 0x00007ffff6ad0047 in QQuickWindowAttached::windowChange (this=0x1c7d520, window=0x0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickwindowattached.cpp:67 #18 0x00007ffff49fbc52 in QtPrivate::QSlotObjectBase::call (this=0x1c7d6e0, r=<optimized out>, a=0x7fffffffcb10) at /home/nico/workspace/qt6/qtbase/src/corelib/kernel/qobjectdefs_impl.h:487 #19 doActivate<false> (sender=0x1894e00, signal_index=15, argv=0x7fffffffcb10) at /home/nico/workspace/qt6/qtbase/src/corelib/kernel/qobject.cpp:4120 #20 0x00007ffff49f2337 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7ffff6f5ad80 <QQuickItem::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7fffffffcb10) at /home/nico/workspace/qt6/qtbase/src/corelib/kernel/qobject.cpp:4180 #21 0x00007ffff69f9a86 in QQuickItem::windowChanged (this=<optimized out>, _t1=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quick/Quick_autogen/include/moc_qquickitem.cpp:1407 #22 0x00007ffff6a0fd8b in QQuickItemPrivate::derefWindow (this=0xd5b210) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.cpp:3147 #23 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x1a34df0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #24 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x19f8be0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #25 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x1873c00) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #26 0x00007ffff6d97e15 in QQuickShaderEffectSource::itemChange (this=0x19d07c0, change=QQuickItem::ItemSceneChange, value=...) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickshadereffectsource.cpp:760 --Type <RET> for more, q to quit, c to continue without paging--c #27 0x00007ffff6a0fd8b in QQuickItemPrivate::derefWindow (this=0x19c43c0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.cpp:3147 #28 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x188c9a0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #29 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x188c1d0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #30 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x1885180) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #31 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xfc48d0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #32 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xfbed30) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #33 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x97a920) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #34 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xe56770) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #35 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x97fc00) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #36 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xe71da0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #37 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xe717f0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #38 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xe57c50) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #39 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0xe505a0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #40 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x758dd0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #41 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x758b70) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #42 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x7551d0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #43 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x74d2c0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #44 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x78d580) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #45 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=0x7dbc30) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #46 0x00007ffff6a0fd35 in QQuickItemPrivate::derefWindow (this=this@entry=0x7e13b0) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.h:486 #47 0x00007ffff6a175c6 in QQuickItem::~QQuickItem (this=this@entry=0x7c8620, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickitem.cpp:2383 #48 0x00007ffff6acbc25 in QQuickRootItem::~QQuickRootItem (this=0x7c8620, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickwindow_p.h:62 #49 QQuickRootItem::~QQuickRootItem (this=0x7c8620, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickwindow_p.h:62 #50 0x00007ffff6ac6e48 in QQuickWindow::~QQuickWindow (this=this@entry=0x89fbe0, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickwindow.cpp:1185 #51 0x00007ffff6ad50c2 in QQuickWindowQmlImpl::~QQuickWindowQmlImpl (this=this@entry=0x89fbe0, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quick/items/qquickwindowmodule.cpp:62 #52 0x00007fffe0ceac28 in QQuickApplicationWindow::~QQuickApplicationWindow (this=this@entry=0x89fbe0, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/quicktemplates/qquickapplicationwindow.cpp:341 #53 0x00007fffe0d95201 in QQmlPrivate::QQmlElement<QQuickApplicationWindow>::~QQmlElement (this=0x89fbe0, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlprivate.h:104 #54 QQmlPrivate::QQmlElement<QQuickApplicationWindow>::~QQmlElement (this=0x89fbe0, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlprivate.h:104 #55 0x00007ffff611e7be in qDeleteAll<QList<QObject*>::const_iterator> (begin=..., end=...) at /home/nico/workspace/qt6/qtbase/src/corelib/tools/qalgorithms.h:27 #56 qDeleteAll<QList<QObject*> > (c=...) at /home/nico/workspace/qt6/qtbase/src/corelib/tools/qalgorithms.h:35 #57 QQmlApplicationEnginePrivate::cleanUp (this=this@entry=0x942420) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlapplicationengine.cpp:40 #58 0x00007ffff611e80c in QQmlApplicationEngine::~QQmlApplicationEngine (this=this@entry=0x7fffffffd370, __in_chrg=<optimized out>) at /home/nico/workspace/qt6/qtdeclarative/src/qml/qml/qqmlapplicationengine.cpp:328 #59 0x000000000040c0fd in main (argc=<optimized out>, argv=<optimized out>) at /home/nico/kde/src/plasma-systemmonitor/src/main.cpp:120 2341508 3 nicolas.fella 2024-07-30 23:07:50 +0000 My crash is fixed with https://codereview.qt-project.org/c/qt/qtdeclarative/+/579714, then I can reproduce the original one 2341513 4 nicolas.fella 2024-07-31 00:02:21 +0000 The immediate cause is somewhat obvious. In https://invent.kde.org/plasma/breeze/-/blob/master/kstyle/breezewindowmanager.cpp#L175 window->contentItem() is null. What's not obvious is whether that code is supposed to run at that point in the first place. When destructing we have QQuickWindow::~QQuickWindow -> QQuickItemPrivate::derefWindow -> QQuickItem::windowChanged -> QQuickPopup::setParentItem where the dialog is reparented from QQuickOverlay to FullRepresentation_QMLTYPE_457 From there we land in KQuickStyleItem::geometryChange and further qqc2-desktop-style/breeze code. I'm not sure whether that reparenting is supposed to happen 2341514 5 bug-janitor 2024-07-31 00:12:18 +0000 A possibly relevant merge request was started @ https://invent.kde.org/plasma/breeze/-/merge_requests/474 2511649 6 kde 2026-04-23 10:27:19 +0000 *** Bug 519247 has been marked as a duplicate of this bug. *** 2513755 7 kdedev 2026-05-04 22:46:01 +0000 *** Bug 519364 has been marked as a duplicate of this bug. *** 2520397 8 kdedev 2026-06-03 20:04:18 +0000 *** Bug 521015 has been marked as a duplicate of this bug. *** 2521661 9 kde 2026-06-09 08:24:19 +0000 *** Bug 521231 has been marked as a duplicate of this bug. *** 2521663 10 kde 2026-06-09 08:29:19 +0000 Git commit 7a067a4ad790e4dd36565ffa00bab2412a72f702 by David Edmundson, on behalf of Nicolas Fella. Committed on 09/06/2026 at 08:29. Pushed by davidedmundson into branch 'master'. Fix crash in WindowManager::registerQuickItem WindowManager::registerQuickItem may be called by on item with a window with no contentItem M +5 -4 kstyle/breezewindowmanager.cpp https://invent.kde.org/plasma/breeze/-/commit/7a067a4ad790e4dd36565ffa00bab2412a72f702 2521773 11 kde 2026-06-09 13:29:05 +0000 Git commit c5c48aa5c5a7fc18e306e97079f37406f09fb47b by David Edmundson. Committed on 09/06/2026 at 08:47. Pushed by tfella into branch 'Plasma/6.7'. Fix crash in WindowManager::registerQuickItem WindowManager::registerQuickItem may be called by on item with a window with no contentItem (cherry picked from commit 7a067a4ad790e4dd36565ffa00bab2412a72f702) 637322d5 Fix crash in WindowManager::registerQuickItem Co-authored-by: Nicolas Fella <nicolas.fella@gmx.de> M +5 -4 kstyle/breezewindowmanager.cpp https://invent.kde.org/plasma/breeze/-/commit/c5c48aa5c5a7fc18e306e97079f37406f09fb47b