Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-22-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed: Attempting to change window decorations. The System Setting crashed before I was able to even view window decoration options.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd6d4b0e800 (LWP 2399))]

Thread 5 (Thread 0x7fd6c1a00700 (LWP 2400)):
#0  0x00007fd6d12548dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd6cef32bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd6cef3474f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd6c4809a39 in QXcbEventReader::run (this=0x1fd9ee0) at qxcbconnection.cpp:1105
#4  0x00007fd6d19532be in QThreadPrivate::start (arg=0x1fd9ee0) at thread/qthread_unix.cpp:337
#5  0x00007fd6ce6a86aa in start_thread (arg=0x7fd6c1a00700) at pthread_create.c:333
#6  0x00007fd6d125feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fd6b2478700 (LWP 2403)):
#0  0x00007fd6d12548dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd6ce1831ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd6ce1832fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd6d1b8a29b in QEventDispatcherGlib::processEvents (this=0x7fd6ac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fd6d1b3075a in QEventLoop::exec (this=this@entry=0x7fd6b2477da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd6d194e3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd6d02b5f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd6d19532be in QThreadPrivate::start (arg=0x288fe00) at thread/qthread_unix.cpp:337
#8  0x00007fd6ce6a86aa in start_thread (arg=0x7fd6b2478700) at pthread_create.c:333
#9  0x00007fd6d125feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fd6aa9d8700 (LWP 2404)):
#0  0x00007fd6ce1c7869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd6ce182d76 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd6ce183250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd6ce1832fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd6d1b8a29b in QEventDispatcherGlib::processEvents (this=0x7fd6a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd6d1b3075a in QEventLoop::exec (this=this@entry=0x7fd6aa9d7da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd6d194e3d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd6d02b5f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd6d19532be in QThreadPrivate::start (arg=0x2b6e670) at thread/qthread_unix.cpp:337
#9  0x00007fd6ce6a86aa in start_thread (arg=0x7fd6aa9d8700) at pthread_create.c:333
#10 0x00007fd6d125feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fd6a3fff700 (LWP 2405)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd6d195455b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x23b14a0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2b075d0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fd6d0575b3e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fd6d05763c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fd6d19532be in QThreadPrivate::start (arg=0x2b07550) at thread/qthread_unix.cpp:337
#6  0x00007fd6ce6a86aa in start_thread (arg=0x7fd6a3fff700) at pthread_create.c:333
#7  0x00007fd6d125feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fd6d4b0e800 (LWP 2399)):
[KCrash Handler]
#6  0x00007fd6d151dd08 in main_arena () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007fd6b2d44941 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007fd6b2d449bb in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#9  0x00007fd6aac97b0d in Breeze::Decoration::setOpacity (this=this@entry=0x2a83350, value=<optimized out>) at ../../kdecoration/breezedecoration.cpp:98
#10 0x00007fd6aacb42b8 in Breeze::Decoration::qt_metacall (this=0x2a83350, _c=QMetaObject::WriteProperty, _id=0, _a=0x7fff6e698be0) at moc_breezedecoration.cpp:150
#11 0x00007fd6d193430a in QPropertyAnimationPrivate::updateProperty (newValue=..., this=0x2b0b5a0) at animation/qpropertyanimation.cpp:135
#12 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#13 0x00007fd6d1930318 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x2b0b5a0, progress=progress@entry=0.96444444444444444) at animation/qvariantanimation.cpp:290
#14 0x00007fd6d1930a17 in QVariantAnimationPrivate::recalculateCurrentInterval (this=0x2b0b5a0, force=<optimized out>) at animation/qvariantanimation.cpp:275
#15 0x00007fd6d192d42f in QAbstractAnimation::setCurrentTime (this=0x2afa660, msecs=130) at animation/qabstractanimation.cpp:1321
#16 0x00007fd6d192d72d in QAnimationTimer::updateAnimationsTime (delta=20, this=0x2185420) at animation/qabstractanimation.cpp:606
#17 QUnifiedTimer::updateAnimationTimers (this=0x220d220) at animation/qabstractanimation.cpp:323
#18 0x00007fd6d192e37c in QAnimationDriver::advanceAnimation (this=<optimized out>, timeStep=-1) at animation/qabstractanimation.cpp:820
#19 0x00007fd6d05564bf in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fd6d0572f94 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007fd6d057532f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007fd6d057593b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007fd6d2a297c5 in QWindow::event (this=0x23f92d0, ev=<optimized out>) at kernel/qwindow.cpp:2058
#24 0x00007fd6d05a5fd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007fd6d2fd2b8c in QApplicationPrivate::notify_helper (this=this@entry=0x1fbd0a0, receiver=receiver@entry=0x23f92d0, e=e@entry=0x7fff6e699310) at kernel/qapplication.cpp:3720
#26 0x00007fd6d2fd8230 in QApplication::notify (this=0x7fff6e6996f0, receiver=0x23f92d0, e=0x7fff6e699310) at kernel/qapplication.cpp:3503
#27 0x00007fd6d1b32f1b in QCoreApplication::notifyInternal (this=0x7fff6e6996f0, receiver=receiver@entry=0x23f92d0, event=event@entry=0x7fff6e699310) at kernel/qcoreapplication.cpp:935
#28 0x00007fd6d2a22336 in QCoreApplication::sendSpontaneousEvent (event=0x7fff6e699310, receiver=0x23f92d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QGuiApplicationPrivate::processExposeEvent (e=0x2589f90) at kernel/qguiapplication.cpp:2616
#30 0x00007fd6d2a2307d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x2589f90) at kernel/qguiapplication.cpp:1638
#31 0x00007fd6d2a085b8 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#32 0x00007fd6c4836250 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#33 0x00007fd6ce182ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fd6ce183250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fd6ce1832fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fd6d1b8a27f in QEventDispatcherGlib::processEvents (this=0x200ce50, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#37 0x00007fd6d1b3075a in QEventLoop::exec (this=this@entry=0x7fff6e6995d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#38 0x00007fd6d1b382cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#39 0x00007fd6d2a1900c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#40 0x00007fd6d2fcf025 in QApplication::exec () at kernel/qapplication.cpp:2956
#41 0x000000000040f04b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Possible duplicates by query: bug 357148, bug 356126, bug 355692, bug 355542, bug 355125.

Reported using DrKonqi