https://bugs.kde.org/show_bug.cgi?id=380122
Bug ID: 380122
Summary: KWin crashes on switching windows after disabling
compositing
Product: kwin
Version: 5.9.5
Platform: Fedora RPMs
OS: Linux
Status: UNCONFIRMED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: hamburger1...@gmail.com
Target Milestone: ---
Application: kwin_x11 (5.9.5)
Qt Version: 5.7.1
Frameworks Version: 5.33.0
Operating System: Linux 4.10.16-200.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"
-- Information about the crash:
- What I was doing when the application crashed:
* disable compositing
* switch windows (ALT-TAB)
* crash
Running on fedora.
The crash does not seem to be reproducible.
-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb2b3ad8940 (LWP 1584))]
Thread 4 (Thread 0x7fb2937fe700 (LWP 1791)):
#0 0x00007fb2c5a7e460 in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1 0x00007fb2cb39f2f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at
/lib64/libQt5Script.so.5
#2 0x00007fb2cb39f339 in () at /lib64/libQt5Script.so.5
#3 0x00007fb2c5a786ca in start_thread () at /lib64/libpthread.so.0
#4 0x00007fb2c2ee5f7f in clone () at /lib64/libc.so.6
Thread 3 (Thread 0x7fb29ffff700 (LWP 1743)):
#0 0x00007fb2c2eda0e1 in ppoll () at /lib64/libc.so.6
#1 0x00007fb2c3cde971 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /lib64/libQt5Core.so.5
#2 0x00007fb2c3cdfe86 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#3 0x00007fb2c3c9368a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#4 0x00007fb2c3af05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#5 0x00007fb2ca5f44e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#6 0x00007fb2c3af49ca in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#7 0x00007fb2c5a786ca in start_thread () at /lib64/libpthread.so.0
#8 0x00007fb2c2ee5f7f in clone () at /lib64/libc.so.6
Thread 2 (Thread 0x7fb2b3ad4700 (LWP 1636)):
#0 0x00007fb2c2eda01d in poll () at /lib64/libc.so.6
#1 0x00007fb2ba413166 in g_main_context_iterate.isra () at
/lib64/libglib-2.0.so.0
#2 0x00007fb2ba41327c in g_main_context_iteration () at
/lib64/libglib-2.0.so.0
#3 0x00007fb2c3ce26eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib64/libQt5Core.so.5
#4 0x00007fb2c3c9368a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#5 0x00007fb2c3af05e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#6 0x00007fb2c8226fb9 in QDBusConnectionManager::run() () at
/lib64/libQt5DBus.so.5
#7 0x00007fb2c3af49ca in QThreadPrivate::start(void*) () at
/lib64/libQt5Core.so.5
#8 0x00007fb2c5a786ca in start_thread () at /lib64/libpthread.so.0
#9 0x00007fb2c2ee5f7f in clone () at /lib64/libc.so.6
Thread 1 (Thread 0x7fb2b3ad8940 (LWP 1584)):
[KCrash Handler]
#6 0x00007fb2c40024c8 in QOpenGLContext::format() const () at
/lib64/libQt5Gui.so.5
#7 0x00007fb2caa86d03 in
QSGBatchRenderer::Renderer::Renderer(QSGRenderContext*) () at
/lib64/libQt5Quick.so.5
#8 0x00007fb2caaa52e1 in QSGRenderContext::createRenderer() () at
/lib64/libQt5Quick.so.5
#9 0x00007fb2caaee574 in QQuickWindowPrivate::syncSceneGraph() () at
/lib64/libQt5Quick.so.5
#10 0x00007fb2caabadf8 in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*)
() at /lib64/libQt5Quick.so.5
#11 0x00007fb2caabc0b8 in
QSGGuiThreadRenderLoop::exposureChanged(QQuickWindow*) () at
/lib64/libQt5Quick.so.5
#12 0x00007fb2c3fd68a5 in QWindow::event(QEvent*) () at /lib64/libQt5Gui.so.5
#13 0x00007fb2caaf8615 in QQuickWindow::event(QEvent*) () at
/lib64/libQt5Quick.so.5
#14 0x00007fb20464073b in PlasmaQuick::Dialog::event(QEvent*) () at
/lib64/libKF5PlasmaQuick.so.5
#15 0x00007fb2c44d4ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib64/libQt5Widgets.so.5
#16 0x00007fb2c44dc671 in QApplication::notify(QObject*, QEvent*) () at
/lib64/libQt5Widgets.so.5
#17 0x00007fb2c3c946fa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib64/libQt5Core.so.5
#18 0x00007fb2c3fcc1cd in
QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*)
() at /lib64/libQt5Gui.so.5
#19 0x00007fb2c3fccdfd in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() at /lib64/libQt5Gui.so.5
#20 0x00007fb2c3fadc4b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /lib64/libQt5Gui.so.5
#21 0x00007fb2b3241716 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /lib64/libQt5XcbQpa.so.5
#22 0x00007fb2c3c9368a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib64/libQt5Core.so.5
#23 0x00007fb2c3c9b18c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#24 0x00007fb2cc0eb002 in kdemain () at /lib64/libkdeinit5_kwin_x11.so
#25 0x00007fb2c2dfe401 in __libc_start_main () at /lib64/libc.so.6
#26 0x000055e4b2d2acca in _start ()
Reported using DrKonqi
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