https://bugs.kde.org/show_bug.cgi?id=476951
Bug ID: 476951
Summary: Dragging desktop widgets crashes Plasma
Classification: Plasma
Product: plasmashell
Version: master
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Keywords: qt6
Severity: crash
Priority: NOR
Component: Desktop Containment
Assignee: plasma-b...@kde.org
Reporter: n...@kde.org
CC: notm...@gmail.com
Target Milestone: 1.0
Plasma 6 Wayland from today's git master with Qt 6.6 from Fedora KDE 39, 200%
scale, 2 screens (but it crashes with 1 screen too)
STEPS TO REPRODUCE
1. Add a widget to the desktop
2. Click-and-hold and drag it, or else enter edit mode and then drag it
OBSERVED RESULT
Plasma immediately crashes. 100% reproducible for me:
#0 __GI___pthread_sigmask (how=1, newmask=<optimized out>, oldmask=0x0) at
pthread_sigmask.c:43
#1 0x00007ff14565cb7d in __GI___sigprocmask
(how=<optimized out>, set=<optimized out>, oset=<optimized out>)
at ../sysdeps/unix/sysv/linux/sigprocmask.c:25
#2 0x00007ff149107d38 in KCrash::setCrashHandler(void (*)(int))
(handler=handler@entry=0x0)
at /home/nate/kde/src/kcrash/src/kcrash.cpp:407
#3 0x00007ff149108854 in KCrash::defaultCrashHandler(int) (sig=11)
at /home/nate/kde/src/kcrash/src/kcrash.cpp:611
#4 0x00007ff14565c9a0 in <signal handler called> () at /lib64/libc.so.6
#5 QSortFilterProxyModelPrivate::_q_sourceHeaderDataChanged(Qt::Orientation,
int, int)
(this=<optimized out>, orientation=Qt::Vertical, start=<optimized out>,
end=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/itemmodels/qsortfilterproxymodel.cpp:1554
#6 0x00007ff145e02051 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffcdad0e200, r=0x6ed5580, this=0x4225240)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qobjectdefs_impl.h:433
#7 doActivate<false>(QObject*, int, void**) (sender=0x6ed8380, signal_index=5,
argv=0x7ffcdad0e200)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qobject.cpp:4021
#8 0x00007ff145df8637 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**)
(sender=<optimized out>, m=m@entry=0x7ff146244e60,
local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffcdad0e200)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qobject.cpp:4081
#9 0x00007ff145fc8783 in
QAbstractItemModel::headerDataChanged(Qt::Orientation, int, int)
(this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>,
_t3=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qabstractitemmodel.cpp:1328
#10 0x00007ff145df3657 in QObject::event(QEvent*) (this=0x6ed8380, e=0x4233100)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qobject.cpp:1437
#11 0x00007ff1475c2b38 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x6ed8380, e=0x4233100)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/widgets/kernel/qapplication.cpp:3290
#12 0x00007ff145da0be8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x6ed8380, event=0x4233100)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qcoreapplication.cpp:1118
#13 0x00007ff145da0ded in QCoreApplication::sendEvent(QObject*, QEvent*)
(receiver=<optimized out>, event=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qcoreapplication.cpp:1536
#14 0x00007ff145da4ae5 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*)
(receiver=0x0, event_type=0, data=0x136ed00)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qcoreapplication.cpp:1898
#15 0x00007ff145da4e5d in QCoreApplication::sendPostedEvents(QObject*, int)
(receiver=<optimized out>, event_type=<optimized out>)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qcoreapplication.cpp:1757
#16 0x00007ff1460410af in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=0x13def90)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:243
#17 0x00007ff14515fe5c in g_main_dispatch (context=0x7ff12c000ef0) at
../glib/gmain.c:3476
#18 g_main_context_dispatch_unlocked (context=0x7ff12c000ef0) at
../glib/gmain.c:4284
#19 0x00007ff1451badd8 in g_main_context_iterate_unlocked.isra.0
(context=context@entry=0x7ff12c000ef0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4349
#20 0x00007ff14515dad3 in g_main_context_iteration (context=0x7ff12c000ef0,
may_block=1)
at ../glib/gmain.c:4414
#21 0x00007ff14604095f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x1374c10, flags=...)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:393
#22 0x00007ff145dad9fb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffcdad0e6b0, flags=..., flags@entry=...)
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/global/qflags.h:34
#23 0x00007ff145da97fd in QCoreApplication::exec() ()
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/corelib/global/qflags.h:74
#24 0x00007ff1465f8b2d in QGuiApplication::exec() ()
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/gui/kernel/qguiapplication.cpp:1921
#25 0x00007ff1475c2aa9 in QApplication::exec() ()
at
/usr/src/debug/qt6-qtbase-6.6.0-2.fc39.x86_64/src/widgets/kernel/qapplication.cpp:2569
#26 0x0000000000425f4a in main(int, char**) (argc=<optimized out>,
argv=<optimized out>)
at /home/nate/kde/src/plasma-workspace/shell/main.cpp:230
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