https://bugs.kde.org/show_bug.cgi?id=469055
Bug ID: 469055
Summary: kwin_wayland sometimes crashes in
KWin::WindowScreenCastSource::textureSize() when
hovering over Task Manager icons
Classification: Plasma
Product: kwin
Version: 5.27.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: n...@kde.org
Target Milestone: ---
STEPS TO REPRODUCE
1. Hover cursor over a Task Manager icon on with Task Manager tooltips/previews
turned on
OBSERVED RESULT
A small percentage of the time, kwin_wayland crashes. I do this enough times
per day that it seems to happen 1-2 times per day.
EXPECTED RESULT
No kwin_wayland crash.
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 37
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
Kernel Version: 6.2.12-200.fc37.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-10510U CPU @ 1.80GHz
Memory: 15.2 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics
ADDITIONAL INFORMATION
Crash backtrace:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 KWin::Window::clientGeometry (this=0x0) at
/home/nate/kde/src/kwin/src/window.h:2080
2080 return m_clientGeometry;
[Current thread is 1 (Thread 0x7fbd49804e40 (LWP 285288))]
(gdb) bt
#0 KWin::Window::clientGeometry() const (this=0x0) at
/home/nate/kde/src/kwin/src/window.h:2080
#1 KWin::WindowScreenCastSource::textureSize() const (this=0x2ca9150)
at
/home/nate/kde/src/kwin/src/plugins/screencast/windowscreencastsource.cpp:40
#2 0x000000000047b3f9 in KWin::ScreenCastStream::recordFrame(QRegion const&)
(this=0x219c590, _damagedRegion=<optimized out>)
at /home/nate/kde/src/kwin/src/plugins/screencast/screencaststream.cpp:429
#3 0x00007fbd4ecd0ff6 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7ffd6b3da7d0, r=<optimized out>, this=0x2a0dae0)
at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#4 doActivate<false>(QObject*, int, void**) (sender=0x219c780, signal_index=3,
argv=0x7ffd6b3da7d0)
at kernel/qobject.cpp:3923
#5 0x00007fbd4eccbf87 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**)
(sender=<optimized out>, m=m@entry=0x7fbd4ef5e580
<QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0,
argv=argv@entry=0x7ffd6b3da7d0) at kernel/qobject.cpp:3983
#6 0x00007fbd4ecd437e in QTimer::timeout(QTimer::QPrivateSignal)
(this=<optimized out>, _t1=...)
at .moc/moc_qtimer.cpp:205
#7 0x00007fbd4ecc8125 in QObject::event(QEvent*) (this=0x219c780,
e=0x7ffd6b3da930)
at kernel/qobject.cpp:1369
#8 0x00007fbd4d9aed62 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x219c780, e=0x7ffd6b3da930) at
kernel/qapplication.cpp:3640
#9 0x00007fbd4ec9d648 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x219c780, event=0x7ffd6b3da930) at
kernel/qcoreapplication.cpp:1064
#10 0x00007fbd4ec9d832 in QCoreApplication::sendEvent(QObject*, QEvent*)
(receiver=<optimized out>, event=<optimized out>) at
kernel/qcoreapplication.cpp:1462
#11 0x00007fbd4ecedae1 in QTimerInfoList::activateTimers()
(this=this@entry=0xcd45c8)
at kernel/qtimerinfo_unix.cpp:643
#12 0x00007fbd4eceb240 in QEventDispatcherUNIXPrivate::activateTimers()
(this=this@entry=0xcd4540)
at kernel/qeventdispatcher_unix.cpp:249
#13 0x00007fbd4ecec090 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:516
#14 0x0000000000535091 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
()
#15 0x00007fbd4ec9c09a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffd6b3daab0, flags=..., flags@entry=...)
at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#16 0x00007fbd4eca4162 in QCoreApplication::exec() ()
at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#17 0x00007fbd4f15fb50 in QGuiApplication::exec() () at
kernel/qguiapplication.cpp:1863
#18 0x00007fbd4d9aecd9 in QApplication::exec() () at
kernel/qapplication.cpp:2832
#19 0x00000000004471fe in main(int, char**) (argc=<optimized out>,
argv=<optimized out>)
at /home/nate/kde/src/kwin/src/main_wayland.cpp:628
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