Bug 354712

Application: systemsettings5 (5.4.1)

Qt Version: 5.5.1
Operating System: Linux 4.2.4-gentoo x86_64
Distribution: "Gentoo Base System release 2.2"

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

I was navigating through different modules for setting desktop appearance. After starting the window decoration module, it crashed after it was loaded.

-- Backtrace:
Application: Systemeinstellungen (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7faebcaa6800 (LWP 25071))]

Thread 5 (Thread 0x7faebc1a4700 (LWP 25072)):
#0  0x0000003535adfc7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x000000353860aa02 in poll (__timeout=-1, __nfds=1, __fds=0x7faebc1a3cc0) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x79ded0, cond=cond@entry=0x79df10, vector=vector@entry=0x0, count=count@entry=0x0) at /var/tmp/portage/x11-libs/libxcb-1.11-r1/work/libxcb-1.11/src/xcb_conn.c:459
#3  0x000000353860c4cf in xcb_wait_for_event (c=0x79ded0) at /var/tmp/portage/x11-libs/libxcb-1.11-r1/work/libxcb-1.11/src/xcb_in.c:623
#4  0x00007faebc5f0c89 in QXcbEventReader::run (this=0x7ac050) at qxcbconnection.cpp:1229
#5  0x000000300d8a04a2 in QThreadPrivate::start (arg=0x7ac050) at thread/qthread_unix.cpp:331
#6  0x0000003536207324 in start_thread (arg=0x7faebc1a4700) at pthread_create.c:333
#7  0x0000003535ae8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7faeb2edb700 (LWP 25078)):
#0  0x0000003537a8a929 in g_mutex_lock (mutex=mutex@entry=0x7faeac000990) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gthread-posix.c:1336
#1  0x0000003537a4865c in g_main_context_check (context=context@entry=0x7faeac000990, max_priority=2147483647, fds=fds@entry=0x7faeac003070, n_fds=n_fds@entry=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3651
#2  0x0000003537a48b58 in g_main_context_iterate (context=context@entry=0x7faeac000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3805
#3  0x0000003537a48cdc in g_main_context_iteration (context=0x7faeac000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#4  0x000000300da9aebc in QEventDispatcherGlib::processEvents (this=0x7faeac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x000000300da4c17a in QEventLoop::exec (this=this@entry=0x7faeb2edada0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x000000300d89ba34 in QThread::exec (this=this@entry=0xcf3050) at thread/qthread.cpp:503
#7  0x0000003019eede65 in QQmlThreadPrivate::run (this=0xcf3050) at qml/ftw/qqmlthread.cpp:141
#8  0x000000300d8a04a2 in QThreadPrivate::start (arg=0xcf3050) at thread/qthread_unix.cpp:331
#9  0x0000003536207324 in start_thread (arg=0x7faeb2edb700) at pthread_create.c:333
#10 0x0000003535ae8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7faeabfff700 (LWP 25079)):
#0  0x0000003535adbccd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003537a89740 in read (__nbytes=16, __buf=0x7faeabffebb0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7faeac0025a0) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gwakeup.c:210
#3  0x0000003537a486f9 in g_main_context_check (context=context@entry=0x7faea4000990, max_priority=2147483647, fds=fds@entry=0x7faea4002e70, n_fds=n_fds@entry=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3600
#4  0x0000003537a48b58 in g_main_context_iterate (context=context@entry=0x7faea4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3805
#5  0x0000003537a48cdc in g_main_context_iteration (context=0x7faea4000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#6  0x000000300da9aebc in QEventDispatcherGlib::processEvents (this=0x7faea40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x000000300da4c17a in QEventLoop::exec (this=this@entry=0x7faeabffeda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x000000300d89ba34 in QThread::exec (this=this@entry=0x10b1a10) at thread/qthread.cpp:503
#9  0x0000003019eede65 in QQmlThreadPrivate::run (this=0x10b1a10) at qml/ftw/qqmlthread.cpp:141
#10 0x000000300d8a04a2 in QThreadPrivate::start (arg=0x10b1a10) at thread/qthread_unix.cpp:331
#11 0x0000003536207324 in start_thread (arg=0x7faeabfff700) at pthread_create.c:333
#12 0x0000003535ae8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7faea9bd0700 (LWP 25080)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x000000300d8a0b2a in wait (time=18446744073709551615, this=0x1657f90) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x16555a8, mutex=mutex@entry=0x16555a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003019972cd3 in takeEvent (wait=true, this=0x1655598) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x1655520) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x00000030199730d0 in QSGRenderThread::run (this=0x1655520) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x000000300d8a04a2 in QThreadPrivate::start (arg=0x1655520) at thread/qthread_unix.cpp:331
#7  0x0000003536207324 in start_thread (arg=0x7faea9bd0700) at pthread_create.c:333
#8  0x0000003535ae8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7faebcaa6800 (LWP 25071)):
[KCrash Handler]
#6  qpen_fast_equals (b=..., a=...) at ../../include/QtGui/5.5.1/QtGui/private/../../../../../src/gui/painting/qpainter_p.h:78
#7  ensurePen (pen=..., this=0x10b1e30) at ../../include/QtGui/5.5.1/QtGui/private/../../../../../src/gui/painting/qpaintengine_raster_p.h:251
#8  ensurePen (this=0x10b1e30) at ../../include/QtGui/5.5.1/QtGui/private/../../../../../src/gui/painting/qpaintengine_raster_p.h:254
#9  QRasterPaintEngine::drawPoints (this=0x10b1e30, points=0x10f0da0, pointCount=-652501328) at painting/qpaintengine_raster.cpp:3097
#10 0x00007faeb31c9d61 in KDecoration2::Decoration::update (this=this@entry=0x10f0da0, r=...) at /var/tmp/portage/kde-plasma/kdecoration-5.4.2/work/kdecoration-5.4.2/src/decoration.cpp:367
#11 0x00007faeb31c9ddb in KDecoration2::Decoration::update (this=this@entry=0x10f0da0) at /var/tmp/portage/kde-plasma/kdecoration-5.4.2/work/kdecoration-5.4.2/src/decoration.cpp:372
#12 0x00007faeb09120c5 in Oxygen::Decoration::setOpacity (this=0x10f0da0, value=<optimized out>) at /var/tmp/portage/kde-plasma/oxygen-5.4.2/work/oxygen-5.4.2/kdecoration/oxygendecoration.cpp:94
#13 0x00007faeb0930e63 in Oxygen::Decoration::qt_metacall (this=0x10f0da0, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffed91b9f70) at /var/tmp/portage/kde-plasma/oxygen-5.4.2/work/oxygen-5.4.2_build/kdecoration/moc_oxygendecoration.cpp:168
#14 0x000000300d883cda in QPropertyAnimationPrivate::updateProperty (this=0x1112ee0, newValue=...) at animation/qpropertyanimation.cpp:135
#15 0x000000300d880288 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x1112ee0, progress=progress@entry=0.97724444444444436) at animation/qvariantanimation.cpp:290
#16 0x000000300d88085f in QVariantAnimationPrivate::recalculateCurrentInterval (this=0x1112ee0, force=<optimized out>) at animation/qvariantanimation.cpp:275
#17 0x000000300d87ecdf in QAbstractAnimation::setCurrentTime (this=0x10dc7e0, msecs=134) at animation/qabstractanimation.cpp:1324
#18 0x000000300d87ee5c in QAnimationTimer::updateAnimationsTime (this=0x91bc00, delta=16) at animation/qabstractanimation.cpp:609
#19 0x000000300d87d1b3 in QUnifiedTimer::updateAnimationTimers (this=0x9e6820) at animation/qabstractanimation.cpp:326
#20 0x000000300d87db9c in QAnimationDriver::advanceAnimation (this=<optimized out>, timeStep=-1) at animation/qabstractanimation.cpp:823
#21 0x0000003019956532 in QSGAnimationDriver::advance (this=0xcac9e0) at scenegraph/qsgcontext.cpp:256
#22 0x0000003019974f97 in QSGThreadedRenderLoop::polishAndSync (this=this@entry=0xd46b80, w=<optimized out>, w@entry=0x1658190, inExpose=inExpose@entry=true) at scenegraph/qsgthreadedrenderloop.cpp:1161
#23 0x0000003019976e7f in QSGThreadedRenderLoop::handleExposure (this=this@entry=0xd46b80, window=window@entry=0xc2c010) at scenegraph/qsgthreadedrenderloop.cpp:946
#24 0x000000301997773a in QSGThreadedRenderLoop::exposureChanged (this=0xd46b80, window=0xc2c010) at scenegraph/qsgthreadedrenderloop.cpp:857
#25 0x000000300f2f8d65 in QWindow::event (this=this@entry=0xc2c010, ev=ev@entry=0x7ffed91ba690) at kernel/qwindow.cpp:2054
#26 0x00000030199aaedb in QQuickWindow::event (this=0xc2c010, e=0x7ffed91ba690) at items/qquickwindow.cpp:1413
#27 0x000000300f95d6bc in QApplicationPrivate::notify_helper (this=this@entry=0x790460, receiver=receiver@entry=0xc2c010, e=e@entry=0x7ffed91ba690) at kernel/qapplication.cpp:3716
#28 0x000000300f962b20 in QApplication::notify (this=0x7ffed91baa80, receiver=0xc2c010, e=0x7ffed91ba690) at kernel/qapplication.cpp:3499
#29 0x000000300da4d55d in QCoreApplication::notifyInternal (this=0x7ffed91baa80, receiver=receiver@entry=0xc2c010, event=event@entry=0x7ffed91ba690) at kernel/qcoreapplication.cpp:965
#30 0x000000300f2f17b8 in sendSpontaneousEvent (event=0x7ffed91ba690, receiver=0xc2c010) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#31 QGuiApplicationPrivate::processExposeEvent (e=0xcad1c0) at kernel/qguiapplication.cpp:2648
#32 0x000000300f2f250d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0xcad1c0) at kernel/qguiapplication.cpp:1643
#33 0x000000300f2d7234 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#34 0x00007faebc61d240 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#35 0x0000003537a489e4 in g_main_dispatch (context=0x7faeb40016f0) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3122
#36 g_main_context_dispatch (context=context@entry=0x7faeb40016f0) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3737
#37 0x0000003537a48c38 in g_main_context_iterate (context=context@entry=0x7faeb40016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3808
#38 0x0000003537a48cdc in g_main_context_iteration (context=0x7faeb40016f0, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1/work/glib-2.44.1/glib/gmain.c:3869
#39 0x000000300da9aea7 in QEventDispatcherGlib::processEvents (this=0x7dfe80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#40 0x000000300da4c17a in QEventLoop::exec (this=this@entry=0x7ffed91ba960, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#41 0x000000300da5354c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#42 0x000000300f2e74fc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1527
#43 0x000000300f9592f5 in QApplication::exec () at kernel/qapplication.cpp:2976
#44 0x000000000040f5bb in main (argc=1, argv=<optimized out>) at /var/tmp/portage/kde-plasma/systemsettings-5.4.2/work/systemsettings-5.4.2/app/main.cpp:55

Reported using DrKonqi