| Summary: | kwin_wayland sometimes crashes in KWin::WindowScreenCastSource::textureSize() when hovering over Task Manager icons | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Nate Graham <nate> |
| Component: | wayland-generic | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED FIXED | ||
| Severity: | crash | CC: | aleixpol, carl |
| Priority: | NOR | ||
| Version: | 5.27.4 | ||
| Target Milestone: | --- | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | https://invent.kde.org/plasma/kwin/commit/709b3db17efc214bb6ae7e7ddf37e9697b287bc5 | Version Fixed In: | 5.27.5 |
| Sentry Crash Report: | |||
The second commit in this MR should address this problem: https://invent.kde.org/plasma/kwin/-/merge_requests/4023 It should happen when a window closes. I reproduced it today with a similar bt: #0 KWin::Window::clientGeometry() const (this=0x0) at /home/apol/devel/frameworks/kwin/src/window.h:2080 #1 0x0000559517d15e16 in KWin::WindowScreenCastSource::textureSize() const (this=0x55951bb29a10) at /home/apol/devel/frameworks/kwin/src/plugins/screencast/windowscreencastsource.cpp:40 #2 0x0000559517d09148 in KWin::ScreenCastStream::recordFrame(QRegion const&) (this=0x55951c05a820, _damagedRegion=...) at /home/apol/devel/frameworks/kwin/src/plugins/screencast/screencaststream.cpp:429 #3 0x0000559517d0f092 in KWin::ScreenCastStream::ScreenCastStream(KWin::ScreenCastSource*, QObject*)::$_0::operator()() const (this=0x55951bf93a70) at /home/apol/devel/frameworks/kwin/src/plugins/screencast/screencaststream.cpp:308 #4 0x0000559517d0f036 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, KWin::ScreenCastStream::ScreenCastStream(KWin::ScreenCastSource*, QObject*)::$_0>::call(KWin::ScreenCastStream::ScreenCastStream(KWin::ScreenCastSource*, QObject*)::$_0&, void**) (f=..., arg=0x7ffd316e3130) at /home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:146 #5 0x0000559517d0f001 in QtPrivate::Functor<KWin::ScreenCastStream::ScreenCastStream(KWin::ScreenCastSource*, QObject*)::$_0, 0>::call<QtPrivate::List<>, void>(KWin::ScreenCastStream::ScreenCastStream(KWin::ScreenCastSource*, QObject*)::$_0&, void*, void**) (f=..., arg=0x7ffd316e3130) at /home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:256 #6 0x0000559517d0efa1 in QtPrivate::QFunctorSlotObject<KWin::ScreenCastStream::ScreenCastStream(KWin::ScreenCastSource*, QObject*)::$_0, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x55951bf93a60, r=0x55951c05a820, a=0x7ffd316e3130, ret=0x0) at /home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:443 Git commit 660ad887ee3eec7374ef83a1d04d0cec9e8ebd19 by Aleix Pol Gonzalez, on behalf of Aleix Pol. Committed on 28/04/2023 at 14:03. Pushed by apol into branch 'master'. screencast: Disable screencasting when a window closes There were still some cases where we might have queried the window, leading to a crash. M +4 -1 src/plugins/screencast/screencaststream.cpp https://invent.kde.org/plasma/kwin/commit/660ad887ee3eec7374ef83a1d04d0cec9e8ebd19 Git commit 709b3db17efc214bb6ae7e7ddf37e9697b287bc5 by Aleix Pol. Committed on 28/04/2023 at 18:11. Pushed by apol into branch 'Plasma/5.27'. screencast: Disable screencasting when a window closes There were still some cases where we might have queried the window, leading to a crash. M +4 -1 src/plugins/screencast/screencaststream.cpp https://invent.kde.org/plasma/kwin/commit/709b3db17efc214bb6ae7e7ddf37e9697b287bc5 *** Bug 472797 has been marked as a duplicate of this bug. *** |
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