Bug 394593

Application: kwin_x11 (5.12.5)

Qt Version: 5.10.0
Frameworks Version: 5.46.0
Operating System: Linux 4.4.126-48-default x86_64
Distribution: "openSUSE Leap 42.3"

-- Information about the crash:
- What I was doing when the application crashed: 
initial user logon following boot

Using nvidia drivers G04 ver 390.59-8.1. 
User home directory loaded from nfs

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2589175940 (LWP 6261))]

Thread 3 (Thread 0x7f2557b9c700 (LWP 6275)):
#0  0x00007f2588b033cf in __GI_ppoll (fds=0x7f2550000ac8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007f2585faaf61 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f2550000ac8) at kernel/qcore_unix.cpp:112
#2  0x00007f2585faaf61 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f2550000ac8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:133
#3  0x00007f2585fac55f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#4  0x00007f2585f5aa4b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f2557b9bc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f2585d9814a in QThread::exec() (this=this@entry=0xe241a0) at thread/qthread.cpp:522
#6  0x00007f258070f3d8 in QQmlThreadPrivate::run() (this=0xe241a0) at /usr/src/debug/qtdeclarative-everywhere-src-5.10.0/src/qml/qml/ftw/qqmlthread.cpp:147
#7  0x00007f2585d9ce0f in QThreadPrivate::start(void*) (arg=0xe241a0) at thread/qthread_unix.cpp:376
#8  0x00007f2581c58724 in start_thread (arg=0x7f2557b9c700) at pthread_create.c:457
#9  0x00007f2588b0be8d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f25669bd700 (LWP 6266)):
#0  0x00007f2588b033cf in __GI_ppoll (fds=0x7f256000b138, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007f2585faaf61 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f256000b138) at kernel/qcore_unix.cpp:112
#2  0x00007f2585faaf61 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f256000b138, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:133
#3  0x00007f2585fac55f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#4  0x00007f2585f5aa4b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f25669bcc50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f2585d9814a in QThread::exec() (this=this@entry=0x7f257f81fd40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:522
#6  0x00007f257f5b57b5 in QDBusConnectionManager::run() (this=0x7f257f81fd40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#7  0x00007f2585d9ce0f in QThreadPrivate::start(void*) (arg=0x7f257f81fd40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:376
#8  0x00007f2581c58724 in start_thread (arg=0x7f25669bd700) at pthread_create.c:457
#9  0x00007f2588b0be8d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2589175940 (LWP 6261)):
[KCrash Handler]
#6  0x00007f25886f9754 in  () at /usr/lib64/libkwin.so.5
#7  0x00007f2584676581 in KDecoration2::DecoratedClient::color(KDecoration2::ColorGroup, KDecoration2::ColorRole) const (this=this@entry=0xdea9b0, group=<optimized out>, role=role@entry=KDecoration2::ColorRole::Frame) at /usr/src/debug/kdecoration-5.12.90/src/decoratedclient.cpp:100
#8  0x00007f256521b73e in Breeze::Decoration::paint(QPainter*, QRect const&) (this=0xd7f1c0, painter=0x7ffea17cd7d8, repaintRegion=...) at /usr/src/debug/breeze-5.12.90/kdecoration/breezedecoration.cpp:445
#9  0x00007f2588704819 in KWin::Decoration::Renderer::renderToImage(QRect const&) () at /usr/lib64/libkwin.so.5
#10 0x00007f2565f9a442 in  () at /usr/lib64/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#11 0x00007f2585f86c93 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7ffea17cda60, r=0xd93130, this=0xd82f20) at ../../src/corelib/kernel/qobjectdefs_impl.h:378
#12 0x00007f2585f86c93 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0xe2cbe0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea17cda60) at kernel/qobject.cpp:3749
#13 0x00007f2585f871e7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0xe2cbe0, m=m@entry=0x7f25863b7520 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea17cda60) at kernel/qobject.cpp:3628
#14 0x00007f2585f93ce7 in QTimer::timeout(QTimer::QPrivateSignal) (this=this@entry=0xe2cbe0, _t1=_t1@entry=...) at .moc/moc_qtimer.cpp:200
#15 0x00007f2585f93fc2 in QTimer::timerEvent(QTimerEvent*) (this=0xe2cbe0, e=<optimized out>) at kernel/qtimer.cpp:255
#16 0x00007f2585f87d04 in QObject::event(QEvent*) (this=0xe2cbe0, e=<optimized out>) at kernel/qobject.cpp:1227
#17 0x00007f2586c7b7fc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0xe2cbe0, e=0x7ffea17cde00) at kernel/qapplication.cpp:3733
#18 0x00007f2586c825e0 in QApplication::notify(QObject*, QEvent*) (this=0x7ffea17ce090, receiver=0xe2cbe0, e=0x7ffea17cde00) at kernel/qapplication.cpp:3492
#19 0x00007f2585f5c325 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0xe2cbe0, event=event@entry=0x7ffea17cde00) at kernel/qcoreapplication.cpp:1044
#20 0x00007f2585fae62e in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffea17cde00, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:234
#21 0x00007f2585fae62e in QTimerInfoList::activateTimers() (this=this@entry=0xc47030) at kernel/qtimerinfo_unix.cpp:643
#22 0x00007f2585fababc in QEventDispatcherUNIXPrivate::activateTimers() (this=this@entry=0xc46f90) at kernel/qeventdispatcher_unix.cpp:249
#23 0x00007f2585fac811 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=..., flags@entry=...) at kernel/qeventdispatcher_unix.cpp:514
#24 0x00007f256e09373d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at qunixeventdispatcher.cpp:68
#25 0x00007f2585f5aa4b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffea17cdfb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#26 0x00007f2585f63104 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1332
#27 0x00007f2588dcd4a8 in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#28 0x00007f2588a3f725 in __libc_start_main (main=0x400670, argc=3, argv=0x7ffea17ce228, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffea17ce218) at libc-start.c:289
#29 0x00000000004006a9 in _start ()

Reported using DrKonqi