https://bugs.kde.org/show_bug.cgi?id=378982

            Bug ID: 378982
           Summary: Plasma crached after switching theme of window manager
           Product: kwin
           Version: 5.9.4
          Platform: Archlinux Packages
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kwin-bugs-n...@kde.org
          Reporter: popov....@gmail.com
  Target Milestone: ---

Application: kwin_x11 (5.9.4)

Qt Version: 5.8.0
Frameworks Version: 5.33.0
Operating System: Linux 4.10.10-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:

I have switched a theme of the window manager from "WindowsK10" to "Plastic".

The crash does not seem to be reproducible.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6d6f4f0840 (LWP 26912))]

Thread 6 (Thread 0x7f6d4dacc700 (LWP 28163)):
#0  0x00007f6d6ef1976b in ppoll () at /usr/lib/libc.so.6
#1  0x00007f6d6c59d2f9 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/libQt5Core.so.5
#2  0x00007f6d6c59e96a in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#3  0x00007f6d6c54b89a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#4  0x00007f6d6c36da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f6d66e86025 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f6d6c3726d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f6d6815f2e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f6d6ef2354f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f6cb91e0700 (LWP 28160)):
#0  0x00007f6d68165ca6 in pthread_cond_timedwait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007f6cbb2d4e44 in  () at /usr/lib/libGLX_nvidia.so.0
#2  0x00007f6cb9ff2394 in  () at /usr/lib/libnvidia-glcore.so.378.13
#3  0x00007f6cbb2d412c in  () at /usr/lib/libGLX_nvidia.so.0
#4  0x00007f6d6815f2e7 in start_thread () at /usr/lib/libpthread.so.0
#5  0x00007f6d6ef2354f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f6d3f7ff700 (LWP 27126)):
#0  0x00007f6d68165756 in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1  0x00007f6d6b4dc234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f6d6b4dc279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f6d6815f2e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f6d6ef2354f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f6d4cbb9700 (LWP 27122)):
#0  0x00007f6d6ef1976b in ppoll () at /usr/lib/libc.so.6
#1  0x00007f6d6c59d2f9 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/libQt5Core.so.5
#2  0x00007f6d6c59e96a in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#3  0x00007f6d6c54b89a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#4  0x00007f6d6c36da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f6d66e86025 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f6d6c3726d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f6d6815f2e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f6d6ef2354f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f6d4f955700 (LWP 26956)):
#0  0x00007f6d6ef1976b in ppoll () at /usr/lib/libc.so.6
#1  0x00007f6d6c59d2f9 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/libQt5Core.so.5
#2  0x00007f6d6c59e96a in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#3  0x00007f6d6c54b89a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#4  0x00007f6d6c36da73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f6d66030125 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f6d6c3726d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f6d6815f2e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f6d6ef2354f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f6d6f4f0840 (LWP 26912)):
[KCrash Handler]
#6  0x00007f6d66e37426 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f6d66e37973 in QQmlPropertyCache::resolve(QQmlPropertyData*) const
() at /usr/lib/libQt5Qml.so.5
#8  0x00007f6d66e37b61 in
QQmlPropertyCache::findProperty(QStringHash<QPair<int, QQmlPropertyData*>
>::ConstIterator, QQmlVMEMetaObject const*, QQmlContextData*) const () at
/usr/lib/libQt5Qml.so.5
#9  0x00007f6d66dbafe2 in
QV4::QObjectWrapper::findProperty(QV4::ExecutionEngine*, QQmlContextData*,
QV4::String*, QV4::QObjectWrapper::RevisionMode, QQmlPropertyData*) const () at
/usr/lib/libQt5Qml.so.5
#10 0x00007f6d66dbed73 in QV4::QObjectWrapper::getQmlProperty(QQmlContextData*,
QV4::String*, QV4::QObjectWrapper::RevisionMode, bool*, bool) const () at
/usr/lib/libQt5Qml.so.5
#11 0x00007f6d66dd48ff in
QV4::Runtime::method_getProperty(QV4::ExecutionEngine*, QV4::Value const&, int)
() at /usr/lib/libQt5Qml.so.5
#12 0x00007f6cbcea5acd in  ()
#13 0x00007f6d6ac544e0 in
KDecoration2::DecorationSettings::decorationButtonsLeftChanged(QVector<KDecoration2::DecorationButtonType>
const&) () at /usr/lib/libkdecorations2.so.5
#14 0x0000000000000000 in  ()

Reported using DrKonqi

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