Bug 344942

Summary: deco kcm segfaults in QV4::ExecutionEngine::~ExecutionEngine
Product: [Plasma] kwin Reporter: Nenad Ilic <nenadilic84>
Component: auroraeAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: albbas, allo, altermetax, amanoel, amd.vladas, andresitc, andysem, artem.anufrij, arusahni, danielmarino96, dnmrtnz94, do.weller, dwizz.donowin, efren_2012_1993, ejt000, evolutionv8, fidelleon, fire, gennady.uraltsev, gennmaiko, german.brionest, gronslet, hans.a.rosbach, ieg, igormarquesc29, jason_h, jejones3141, juanreyes, k2mil, kdebuggs, luigi.toscano, m.krasilnikov, mani.zaeim, marrr28899, nc-wittigge, npart, officialturbo2013, paolo, patrick.rifici, phil_salter, pmargeti34, r.oscar, sdicke, simon.vizzini83, thesirdmz, tkrippes, tysmiley, vicecityismyhome, viniciosmendonca16, wagneralvaro80, wu.siyu, yuenjik, zukenj
Priority: NOR Keywords: drkonqi
Version: 5.2.1   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Nenad Ilic 2015-03-07 23:07:20 UTC 
Application: systemsettings5 (5.2.1)

Qt Version: 5.4.0
Operating System: Linux 3.19.0-7-generic x86_64
Distribution: Ubuntu Vivid Vervet (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
The crash happned when I was swithing the theme and clicking Apply and Ok

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 0x7f5322f29780 (LWP 2262))]

Thread 4 (Thread 0x7f5313c02700 (LWP 2263)):
#0  0x00007f531f67a0cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f531e3c8b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f531e3ca64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f531614d0b9 in QXcbEventReader::run (this=0xb78170) at qxcbconnection.cpp:1105
#4  0x00007f531fd01a4e in QThreadPrivate::start (arg=0xb78170) at thread/qthread_unix.cpp:337
#5  0x00007f531d2e00a5 in start_thread (arg=0x7f5313c02700) at pthread_create.c:309
#6  0x00007f531f68457d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f5302638700 (LWP 2267)):
#0  0x00007f531ce05789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f531cdbff38 in g_main_context_release () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f531cdc0e76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f531cdc0fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f531ff98acc in QEventDispatcherGlib::processEvents (this=0x7f52fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f531ff3d392 in QEventLoop::exec (this=this@entry=0x7f5302637e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f531fcfca94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f5302d56865 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f531fd01a4e in QThreadPrivate::start (arg=0x154b5f0) at thread/qthread_unix.cpp:337
#9  0x00007f531d2e00a5 in start_thread (arg=0x7f5302638700) at pthread_create.c:309
#10 0x00007f531f68457d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f52f28d2700 (LWP 2282)):
#0  0x00007f531ce057a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f531cdbfe5e in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f531cdc0d75 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f531cdc0fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f531ff98acc in QEventDispatcherGlib::processEvents (this=0x7f52e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f531ff3d392 in QEventLoop::exec (this=this@entry=0x7f52f28d1e40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f531fcfca94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f531fd01a4e in QThreadPrivate::start (arg=0x4155840) at thread/qthread_unix.cpp:337
#8  0x00007f531d2e00a5 in start_thread (arg=0x7f52f28d2700) at pthread_create.c:309
#9  0x00007f531f68457d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f5322f29780 (LWP 2262)):
[KCrash Handler]
#6  0x00007f5302c71057 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f5302c1b011 in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f5302d599d5 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f5302d59bb9 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f5302bb7f21 in QJSEngine::~QJSEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f5302cbbbc5 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f5302cbbc99 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f52fae8cc22 in cleanup (pointer=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:54
#14 reset (other=0x0, this=0x7f52fb11a6c8 <Aurorae::Helper::instance()::s_helper+8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:149
#15 Aurorae::Helper::unref (this=0x7f52fb11a6c0 <Aurorae::Helper::instance()::s_helper>) at ../../../../clients/aurorae/src/aurorae.cpp:119
#16 0x00007f52fae90948 in unref (this=<optimized out>) at ../../../../clients/aurorae/src/aurorae.cpp:273
#17 Aurorae::Decoration::~Decoration (this=0x3fe1040, __in_chrg=<optimized out>) at ../../../../clients/aurorae/src/aurorae.cpp:267
#18 0x00007f52fae90969 in Aurorae::Decoration::~Decoration (this=0x3fe1040, __in_chrg=<optimized out>) at ../../../../clients/aurorae/src/aurorae.cpp:280
#19 0x00007f531ff71708 in QObject::event (this=0x3fe1040, e=<optimized out>) at kernel/qobject.cpp:1236
#20 0x00007f5320d302ec in QApplicationPrivate::notify_helper (this=0xb60680, receiver=0x3fe1040, e=0x34209a0) at kernel/qapplication.cpp:3722
#21 0x00007f5320d35960 in QApplication::notify (this=0x7fff7a4177b0, receiver=0x3fe1040, e=0x34209a0) at kernel/qapplication.cpp:3505
#22 0x00007f531ff3fbdb in QCoreApplication::notifyInternal (this=0x7fff7a4177b0, receiver=0x3fe1040, event=event@entry=0x34209a0) at kernel/qcoreapplication.cpp:932
#23 0x00007f531ff41c4b in sendEvent (event=0x34209a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#24 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0xb5fdb0) at kernel/qcoreapplication.cpp:1536
#25 0x00007f53034d092e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f5303502213 in QQuickWindow::~QQuickWindow() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#27 0x00007f53035b1029 in QQuickView::~QQuickView() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#28 0x00007f5320d8efb5 in QWindowContainer::~QWindowContainer (this=0x16f6570, __in_chrg=<optimized out>) at kernel/qwindowcontainer.cpp:219
#29 0x00007f5320d8efd9 in QWindowContainer::~QWindowContainer (this=0x16f6570, __in_chrg=<optimized out>) at kernel/qwindowcontainer.cpp:220
#30 0x00007f531ff6f11c in QObjectPrivate::deleteChildren (this=this@entry=0x11d2b90) at kernel/qobject.cpp:1950
#31 0x00007f5320d6fc2a in QWidget::~QWidget (this=0x1543f70, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1642
#32 0x00007f5320d6fe99 in QWidget::~QWidget (this=0x1543f70, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1662
#33 0x00007f531ff6f11c in QObjectPrivate::deleteChildren (this=this@entry=0x15b1c30) at kernel/qobject.cpp:1950
#34 0x00007f5320d6fc2a in QWidget::~QWidget (this=0x15811a0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1642
#35 0x00007f530397c4fe in ~ConfigurationForm (this=0x15811a0, __in_chrg=<optimized out>) at ../../../kcmkwin/kwindecoration/kcm.h:41
#36 KDecoration2::Configuration::ConfigurationForm::~ConfigurationForm (this=0x15811a0, __in_chrg=<optimized out>) at ../../../kcmkwin/kwindecoration/kcm.h:41
#37 0x00007f531ff6f11c in QObjectPrivate::deleteChildren (this=this@entry=0x1540560) at kernel/qobject.cpp:1950
#38 0x00007f5320d6fc2a in QWidget::~QWidget (this=0x15b1790, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1642
#39 0x00007f53218131f7 in KCModule::~KCModule (this=0x15b1790, __in_chrg=<optimized out>) at ../../src/kcmodule.cpp:164
#40 0x00007f53039771a1 in ~ConfigurationModule (this=0x15b1790, __in_chrg=<optimized out>) at ../../../kcmkwin/kwindecoration/kcm.h:47
#41 KDecoration2::Configuration::ConfigurationModule::~ConfigurationModule (this=0x15b1790, __in_chrg=<optimized out>) at ../../../kcmkwin/kwindecoration/kcm.h:47
#42 0x00007f5322a9c3f4 in KCModuleProxy::deleteClient (this=this@entry=0x1580060) at ../../src/kcmoduleproxy.cpp:217
#43 0x00007f5322a9c4f6 in KCModuleProxy::~KCModuleProxy (this=0x1580060, __in_chrg=<optimized out>) at ../../src/kcmoduleproxy.cpp:208
#44 0x00007f5322a9c609 in KCModuleProxy::~KCModuleProxy (this=0x1580060, __in_chrg=<optimized out>) at ../../src/kcmoduleproxy.cpp:212
#45 0x00007f531ff6f11c in QObjectPrivate::deleteChildren (this=this@entry=0x157c000) at kernel/qobject.cpp:1950
#46 0x00007f5320d6fc2a in QWidget::~QWidget (this=0x157b490, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1642
#47 0x00007f5320d6fe99 in QWidget::~QWidget (this=0x157b490, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1662
#48 0x00007f531ff6f11c in QObjectPrivate::deleteChildren (this=this@entry=0x157bd60) at kernel/qobject.cpp:1950
#49 0x00007f5320d6fc2a in QWidget::~QWidget (this=0x1575aa0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1642
#50 0x00007f5320efe0d9 in QScrollArea::~QScrollArea (this=0x1575aa0, __in_chrg=<optimized out>) at widgets/qscrollarea.cpp:168
#51 0x00007f53213583f3 in ~Private (this=0x157fe20, __in_chrg=<optimized out>) at ../../src/kpagewidgetmodel.cpp:40
#52 KPageWidgetItem::~KPageWidgetItem (this=0x157faf0, __in_chrg=<optimized out>) at ../../src/kpagewidgetmodel.cpp:86
#53 0x00007f5321358de4 in ~KPageWidgetItem (this=0x157faf0, __in_chrg=<optimized out>) at ../../src/kpagewidgetmodel.cpp:87
#54 PageItem::~PageItem (this=0x157b3b0, __in_chrg=<optimized out>) at ../../src/kpagewidgetmodel.cpp:176
#55 0x00007f532135a018 in KPageWidgetModel::removePage (this=0xd65d20, item=<optimized out>) at ../../src/kpagewidgetmodel.cpp:537
#56 0x00007f5321357f47 in KPageWidget::removePage (this=<optimized out>, item=<optimized out>) at ../../src/kpagewidget.cpp:120
#57 0x00007f5322ccf875 in ModuleView::closeModules (this=0xd717e0) at ../../core/ModuleView.cpp:275
#58 0x00007f5304f375ce in IconMode::backToOverview (this=0x1276320) at ../../icons/IconMode.cpp:156
#59 0x00007f531ff70959 in QMetaObject::activate (sender=sender@entry=0xd83eb0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fff7a4169e0) at kernel/qobject.cpp:3716
#60 0x00007f531ff70fe7 in QMetaObject::activate (sender=sender@entry=0xd83eb0, m=m@entry=0x7f5321245f40 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fff7a4169e0) at kernel/qobject.cpp:3582
#61 0x00007f5320d25ed2 in QAction::triggered (this=this@entry=0xd83eb0, _t1=false) at .moc/moc_qaction.cpp:360
#62 0x00007f5320d285d8 in QAction::activate (this=0xd83eb0, event=<optimized out>) at kernel/qaction.cpp:1167
#63 0x00007f5320e2c43d in QAbstractButtonPrivate::click (this=0x14e19b0) at widgets/qabstractbutton.cpp:516
#64 0x00007f5320e2c654 in QAbstractButton::mouseReleaseEvent (this=0x14e12f0, e=0x7fff7a416ee0) at widgets/qabstractbutton.cpp:1132
#65 0x00007f5320ef82ba in QToolButton::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at widgets/qtoolbutton.cpp:609
#66 0x00007f5320d73898 in QWidget::event (this=0x14e12f0, event=0x7fff7a416ee0) at kernel/qwidget.cpp:9022
#67 0x00007f5320e2d973 in QAbstractButton::event (this=this@entry=0x14e12f0, e=e@entry=0x7fff7a416ee0) at widgets/qabstractbutton.cpp:1089
#68 0x00007f5320ef8399 in QToolButton::event (this=0x14e12f0, event=0x7fff7a416ee0) at widgets/qtoolbutton.cpp:965
#69 0x00007f5320d302ec in QApplicationPrivate::notify_helper (this=0xb60680, receiver=0x14e12f0, e=0x7fff7a416ee0) at kernel/qapplication.cpp:3722
#70 0x00007f5320d35f9e in QApplication::notify (this=0x7fff7a416c20, receiver=0x7fff7a416c40, e=0x7fff7a416ee0) at kernel/qapplication.cpp:3280
#71 0x00007f531ff3fbdb in QCoreApplication::notifyInternal (this=0x7fff7a4177b0, receiver=receiver@entry=0x14e12f0, event=event@entry=0x7fff7a416ee0) at kernel/qcoreapplication.cpp:932
#72 0x00007f5320d34b6a in sendSpontaneousEvent (event=0x7fff7a416ee0, receiver=0x14e12f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#73 QApplicationPrivate::sendMouseEvent (receiver=0x14e12f0, event=0x7fff7a416ee0, alienWidget=0x14e12f0, nativeWidget=0xd04e20, buttonDown=<optimized out>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2751
#74 0x00007f5320d8bea0 in QWidgetWindow::handleMouseEvent (this=0x1858eb0, event=0x7fff7a4172f0) at kernel/qwidgetwindow.cpp:506
#75 0x00007f5320d8e013 in QWidgetWindow::event (this=0x1858eb0, event=0x7fff7a4172f0) at kernel/qwidgetwindow.cpp:173
#76 0x00007f5320d302ec in QApplicationPrivate::notify_helper (this=0xb60680, receiver=0x1858eb0, e=0x7fff7a4172f0) at kernel/qapplication.cpp:3722
#77 0x00007f5320d35960 in QApplication::notify (this=0x7fff7a4177b0, receiver=0x1858eb0, e=0x7fff7a4172f0) at kernel/qapplication.cpp:3505
#78 0x00007f531ff3fbdb in QCoreApplication::notifyInternal (this=0x7fff7a4177b0, receiver=0x1858eb0, event=0x7fff7a4172f0) at kernel/qcoreapplication.cpp:932
#79 0x00007f5320774dc2 in sendSpontaneousEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#80 QGuiApplicationPrivate::processMouseEvent (e=0x4866f70) at kernel/qguiapplication.cpp:1799
#81 0x00007f53207768d5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x4866f70) at kernel/qguiapplication.cpp:1601
#82 0x00007f532075b1af in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#83 0x00007f5316176560 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#84 0x00007f531cdc0c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#85 0x00007f531cdc0f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#86 0x00007f531cdc0fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#87 0x00007f531ff98ab7 in QEventDispatcherGlib::processEvents (this=0xb99d60, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#88 0x00007f531ff3d392 in QEventLoop::exec (this=this@entry=0x7fff7a417690, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#89 0x00007f531ff44fdc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1185
#90 0x00007f532076c19c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1535
#91 0x00007f5320d2bf55 in QApplication::exec () at kernel/qapplication.cpp:2956
#92 0x000000000040eebc in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:54

Reported using DrKonqi
Comment 1 Christoph Feck 2015-03-08 08:54:36 UTC 
*** Bug 344943 has been marked as a duplicate of this bug. ***
Comment 2 Thomas Lübking 2015-04-16 19:49:29 UTC 
*** Bug 345965 has been marked as a duplicate of this bug. ***
Comment 3 Thomas Lübking 2015-04-16 19:50:10 UTC 
*** Bug 346096 has been marked as a duplicate of this bug. ***
Comment 4 Thomas Lübking 2015-04-16 20:02:54 UTC 
*** Bug 346187 has been marked as a duplicate of this bug. ***
Comment 5 Christoph Feck 2015-04-25 08:22:05 UTC 
*** Bug 346609 has been marked as a duplicate of this bug. ***
Comment 6 Christoph Feck 2015-04-25 08:22:36 UTC 
*** Bug 346613 has been marked as a duplicate of this bug. ***
Comment 7 Thomas Lübking 2015-04-25 16:15:02 UTC 
This
#8  0x00007f5302d599d5 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f5302d59bb9 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5

and this
#11 0x00007f5302cbbbc5 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f5302cbbc99 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5

looks incredibly fishy, but I cannot reproduce this bug (unlike the other, which occurs when the glowglass deco is insalled)

=> Can everybody please list their installed decorations/themes to get us a pattern which might cause this?
Comment 8 Thomas Lübking 2015-04-25 19:19:01 UTC 
Bart Schouten hinted some Cupertino deco to be the trigger and there's success:
at least in- or deinstalling the "cupertino-air" theme reliably (afaics) triggers this trace:
(KWin 5.2.2, stock Archlinux version)

---------------------------------------

Application: KDE-Kontrollmodul (kcmshell5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xaf240780 (LWP 14435))]

Thread 2 (Thread 0xa6ad3b40 (LWP 14473)):
#0  0xb77d9bc0 in __kernel_vsyscall ()
#1  0xb76b9ac1 in select () from /usr/lib/libc.so.6
#2  0xb64e7964 in ?? () from /usr/lib/libQt5Core.so.5
#3  0xb637f5ab in ?? () from /usr/lib/libQt5Core.so.5
#4  0xb45901a6 in start_thread () from /usr/lib/libpthread.so.0
#5  0xb76c17ce in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0xaf240780 (LWP 14435)):
[KCrash Handler]
#6  0xb59e77b6 in ?? () from /usr/lib/libQt5Qml.so.5
#7  0xb598d09b in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/libQt5Qml.so.5
#8  0xb5ad5b11 in QV8Engine::~QV8Engine() () from /usr/lib/libQt5Qml.so.5
#9  0xb5ad5d3a in QV8Engine::~QV8Engine() () from /usr/lib/libQt5Qml.so.5
#10 0xb592899f in QJSEngine::~QJSEngine() () from /usr/lib/libQt5Qml.so.5
#11 0xb5a34142 in QQmlEngine::~QQmlEngine() () from /usr/lib/libQt5Qml.so.5
#12 0xb5a3421a in QQmlEngine::~QQmlEngine() () from /usr/lib/libQt5Qml.so.5
#13 0xaaf559a4 in ?? () from /usr/lib/qt/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#14 0xb76068a3 in __run_exit_handlers () from /usr/lib/libc.so.6
#15 0xb7606901 in exit () from /usr/lib/libc.so.6
#16 0xb75f065a in __libc_start_main () from /usr/lib/libc.so.6
#17 0x080485f5 in _start ()
Comment 9 Børre Gaup 2015-04-25 23:38:52 UTC 
I had these decorations installed in ~/.local/share/aurorae/themes
air-oxygen
ambiance
cupertino
Diamond
ElementaryLunaAurorae
Ember
light
nano-deco
NewAir
osx
perfection
PlasmaNext-windowdecoration-ideas
seven
Tenuto-Light
Tenuto-Light-ActiveStrong

I moved all of them out of that directory, then moved them back one by one. 

For each of these decorations, I went into Window Decorations, scrolled through the previews and quit systemsettings. All but one decoration caused this crash, PlasmaNext-windowdecoration-ideas, and that one had no preview.


So it seems that it is the preview of these decorations that causes the crash.
Comment 10 ejt000 2015-04-26 00:52:25 UTC 
I tried to reproduce it and these were my results:

Themes installed:
org.kde.breeze
Freeze
Kdust
Plastik

It only crashes when I click OK. Not when I change the theme with apply.
Going from: 
Plastik -> Kdust CRASH
Kdust -> Plastik no crash
Plastik -> Kdust CRASH
Kdust -> Freeze CRASH
Freeze -> org.kde.breeze no crash
org.kde.breeze -> Plastik CRASH

Hope this helps. I have never reported bugs before ;)
Comment 11 Christoph Feck 2015-05-03 00:06:15 UTC 
*** Bug 346891 has been marked as a duplicate of this bug. ***
Comment 12 Christoph Feck 2015-05-03 00:06:29 UTC 
*** Bug 346999 has been marked as a duplicate of this bug. ***
Comment 13 Christoph Feck 2015-05-03 00:07:03 UTC 
*** Bug 346693 has been marked as a duplicate of this bug. ***
Comment 14 Christoph Feck 2015-05-09 19:22:29 UTC 
*** Bug 347208 has been marked as a duplicate of this bug. ***
Comment 15 Christoph Feck 2015-05-09 19:22:51 UTC 
*** Bug 347336 has been marked as a duplicate of this bug. ***
Comment 16 Christoph Feck 2015-05-09 19:23:08 UTC 
*** Bug 347363 has been marked as a duplicate of this bug. ***
Comment 17 Christoph Feck 2015-05-09 19:23:33 UTC 
*** Bug 347374 has been marked as a duplicate of this bug. ***
Comment 18 Lastique 2015-05-09 20:32:38 UTC 
My decorations: air-oxygen, widget style: Oxygen, desktop theme: Air.

The original crash I reported in bug #347374 happened when I switched decorations from org.kde.oxygen to air-oxygen. But as I was typing this comment I went to the System Settings to see theme names and it still crashed when I pressed the Overview button to exit the decorations selection screen, although I made no changes at all.
Comment 19 Lastique 2015-05-09 20:36:53 UTC 
I'll add that I only have air-oxygen in ~/.local/share/aurorae/themes.
Comment 20 Christoph Feck 2015-05-16 17:06:42 UTC 
*** Bug 347530 has been marked as a duplicate of this bug. ***
Comment 21 Christoph Feck 2015-05-16 17:07:06 UTC 
*** Bug 347722 has been marked as a duplicate of this bug. ***
Comment 22 Christoph Feck 2015-05-23 14:46:07 UTC 
*** Bug 347837 has been marked as a duplicate of this bug. ***
Comment 23 Christoph Feck 2015-05-23 14:46:28 UTC 
*** Bug 347866 has been marked as a duplicate of this bug. ***
Comment 24 Christoph Feck 2015-05-23 14:46:51 UTC 
*** Bug 347888 has been marked as a duplicate of this bug. ***
Comment 25 Christoph Feck 2015-05-23 14:47:09 UTC 
*** Bug 348037 has been marked as a duplicate of this bug. ***
Comment 26 Christoph Feck 2015-05-31 13:58:53 UTC 
*** Bug 348282 has been marked as a duplicate of this bug. ***
Comment 27 Christoph Feck 2015-05-31 13:59:12 UTC 
*** Bug 348470 has been marked as a duplicate of this bug. ***
Comment 28 Christoph Feck 2015-05-31 18:39:18 UTC 
*** Bug 348504 has been marked as a duplicate of this bug. ***
Comment 29 Christoph Feck 2015-06-16 17:29:57 UTC 
*** Bug 349167 has been marked as a duplicate of this bug. ***
Comment 30 Christoph Feck 2015-06-23 22:36:47 UTC 
*** Bug 349430 has been marked as a duplicate of this bug. ***
Comment 31 Christoph Feck 2015-07-10 14:24:42 UTC 
*** Bug 349757 has been marked as a duplicate of this bug. ***
Comment 32 Christoph Feck 2015-07-10 14:25:03 UTC 
*** Bug 349775 has been marked as a duplicate of this bug. ***
Comment 33 Christoph Feck 2015-07-28 11:46:14 UTC 
*** Bug 350644 has been marked as a duplicate of this bug. ***
Comment 34 Christoph Feck 2015-08-13 00:11:46 UTC 
*** Bug 351042 has been marked as a duplicate of this bug. ***
Comment 35 Christoph Feck 2015-08-13 00:12:15 UTC 
*** Bug 351170 has been marked as a duplicate of this bug. ***
Comment 36 Christoph Feck 2015-08-22 14:44:35 UTC 
*** Bug 351465 has been marked as a duplicate of this bug. ***
Comment 37 Christoph Feck 2015-09-03 09:25:00 UTC 
*** Bug 351841 has been marked as a duplicate of this bug. ***
Comment 38 Christoph Feck 2015-11-16 01:28:03 UTC 
*** Bug 354952 has been marked as a duplicate of this bug. ***
Comment 39 Christoph Feck 2015-11-24 12:29:12 UTC 
*** Bug 355753 has been marked as a duplicate of this bug. ***
Comment 40 Christoph Feck 2016-11-18 13:13:59 UTC 
*** Bug 372621 has been marked as a duplicate of this bug. ***
Comment 41 Christoph Feck 2016-11-18 13:14:55 UTC 
*** Bug 357735 has been marked as a duplicate of this bug. ***
Comment 42 Christoph Feck 2016-11-21 03:24:50 UTC 
*** Bug 372626 has been marked as a duplicate of this bug. ***
Comment 43 Christoph Feck 2016-11-21 03:27:08 UTC 
*** Bug 372621 has been marked as a duplicate of this bug. ***
Comment 44 Christoph Feck 2016-11-27 03:39:54 UTC 
*** Bug 372968 has been marked as a duplicate of this bug. ***
Comment 45 Christoph Feck 2016-11-30 00:20:06 UTC 
*** Bug 373094 has been marked as a duplicate of this bug. ***
Comment 46 Christoph Feck 2016-12-05 12:48:49 UTC 
*** Bug 373287 has been marked as a duplicate of this bug. ***
Comment 47 Christoph Feck 2016-12-06 12:54:22 UTC 
*** Bug 373330 has been marked as a duplicate of this bug. ***
Comment 48 Christoph Feck 2016-12-06 12:54:46 UTC 
*** Bug 373320 has been marked as a duplicate of this bug. ***
Comment 49 Luigi Toscano 2016-12-13 20:30:19 UTC 
I can reproduce a bit differently on Debian testing, with Qt packages 5.7.1~20161021-5, systemsettings 5.8.2 (and 5.8.4 from unstable, but I don't think it matters) and Frameworks 5.27. It happens when I click on "Desktop Behavior" and then "Screen locking", without touching any widget. It crashes when I click to "All Settings" or (as other reported) when I close it. Maybe the screen locking uses some special setting?
Comment 50 Luigi Toscano 2016-12-13 20:32:35 UTC 
Oh, and I use the Oxygen style for widgets, but it happens with Breeze too. Breeze for window decoration.
Comment 51 Christoph Feck 2016-12-20 22:55:18 UTC 
*** Bug 373731 has been marked as a duplicate of this bug. ***
Comment 52 Christoph Feck 2016-12-20 22:59:47 UTC 
*** Bug 373793 has been marked as a duplicate of this bug. ***
Comment 53 Christoph Feck 2016-12-20 23:00:40 UTC 
*** Bug 373811 has been marked as a duplicate of this bug. ***
Comment 54 Christoph Feck 2016-12-20 23:03:54 UTC 
*** Bug 373873 has been marked as a duplicate of this bug. ***
Comment 55 Christoph Feck 2016-12-20 23:05:41 UTC 
*** Bug 373877 has been marked as a duplicate of this bug. ***
Comment 56 Christoph Feck 2016-12-31 05:41:40 UTC 
*** Bug 374295 has been marked as a duplicate of this bug. ***
Comment 57 Christoph Feck 2016-12-31 05:42:26 UTC 
*** Bug 374271 has been marked as a duplicate of this bug. ***
Comment 58 Christoph Feck 2016-12-31 05:43:31 UTC 
*** Bug 374115 has been marked as a duplicate of this bug. ***
Comment 59 Christoph Feck 2016-12-31 05:44:16 UTC 
*** Bug 374150 has been marked as a duplicate of this bug. ***
Comment 60 Christoph Feck 2016-12-31 05:49:52 UTC 
*** Bug 374350 has been marked as a duplicate of this bug. ***
Comment 61 Christoph Feck 2016-12-31 20:43:14 UTC 
*** Bug 374380 has been marked as a duplicate of this bug. ***
Comment 62 Christoph Feck 2016-12-31 20:45:33 UTC 
*** Bug 374391 has been marked as a duplicate of this bug. ***
Comment 63 Christoph Feck 2017-01-04 13:13:17 UTC 
Bug 373628 has full analysis and testcase.

*** This bug has been marked as a duplicate of bug 373628 ***