Bug 394312

KDE Plasma 5.12.5
KDE Frameworks 5.45.0
Qt 5.10.0
Kernel 4.16.8-1-default
openSUSE Tumbleweed 20180513
qtcurve-qt5 1.9.0-1.4

KInfoCenter will crash if starting a second instance with a QtCurve theme enabled. See also
https://bugzilla.opensuse.org/show_bug.cgi?id=1093047

Here's the backtrace with debuginfo packages installed


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Application: kinfocenter (kinfocenter), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f12e059e800 (LWP 24950))]

Thread 3 (Thread 0x7f12c4bb2700 (LWP 24953)):
#0  0x00007f12dcd9b179 in poll () from /lib64/libc.so.6
#1  0x00007f12d6d7d429 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f12d6d7d53c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f12dd6d9a2b in QEventDispatcherGlib::processEvents (this=0x7f12c0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f12dd68095a in QEventLoop::exec (this=this@entry=0x7f12c4bb1d90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f12dd4a7baa in QThread::exec (this=<optimized out>) at thread/qthread.cpp:522
#6  0x00007f12dada8a35 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007f12dd4acba0 in QThreadPrivate::start (arg=0x7f12db018d60) at thread/qthread_unix.cpp:376
#8  0x00007f12d912d59b in start_thread () from /lib64/libpthread.so.0
#9  0x00007f12dcda5a1f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f12cd2e1700 (LWP 24952)):
#0  0x00007f12dcd9b179 in poll () from /lib64/libc.so.6
#1  0x00007f12d6b12387 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f12d6b13faa in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f12d02ae0a9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f12dd4acba0 in QThreadPrivate::start (arg=0x561df9319f80) at thread/qthread_unix.cpp:376
#5  0x00007f12d912d59b in start_thread () from /lib64/libpthread.so.0
#6  0x00007f12dcda5a1f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f12e059e800 (LWP 24950)):
[KCrash Handler]
#6  QHash<int, (anonymous namespace)::Path>::isEmpty (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qhash.h:269
#7  getPath (format=format@entry=QSettings::NativeFormat, scope=scope@entry=QSettings::UserScope) at io/qsettings.cpp:1106
#8  0x00007f12dd5ec50d in QConfFileSettingsPrivate::QConfFileSettingsPrivate (this=0x561df963d870, format=QSettings::NativeFormat, scope=<optimized out>, organization=..., application=...) at io/qsettings.cpp:1145
#9  0x00007f12dd5ecbf3 in QSettingsPrivate::create (application=..., organization=..., scope=QSettings::UserScope, format=QSettings::NativeFormat) at io/qsettings.cpp:299
#10 QSettings::QSettings (this=0x7fff7d817e30, organization=..., application=..., parent=0x0) at io/qsettings.cpp:2533
#11 0x00007f12c4131ff5 in QtCurve::Style::init (this=this@entry=0x561df945c040, initial=initial@entry=true) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve.cpp:399
#12 0x00007f12c41338d8 in QtCurve::Style::Style (this=0x561df945c040) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve.cpp:369
#13 0x00007f12c415a76b in QtCurve::StylePlugin::create (this=0x561df9442c30, key=...) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve_plugin.cpp:130
#14 0x00007f12de476823 in qLoadPlugin<QStyle, QStylePlugin> (key=..., loader=<optimized out>) at ../../include/QtCore/5.10.0/QtCore/private/../../../../../src/corelib/plugin/qfactoryloader_p.h:114
#15 QStyleFactory::create (key=...) at styles/qstylefactory.cpp:105
#16 0x00007f12de49a135 in QProxyStylePrivate::ensureBaseStyle (this=this@entry=0x561df9445650) at styles/qproxystyle.cpp:99
#17 0x00007f12de49ad75 in QProxyStyle::event (this=<optimized out>, e=0x7fff7d818200) at styles/qproxystyle.cpp:379
#18 0x00007f12de40b01c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x561df953c820, e=0x7fff7d818200) at kernel/qapplication.cpp:3733
#19 0x00007f12de412314 in QApplication::notify (this=0x7fff7d818720, receiver=0x561df953c820, e=0x7fff7d818200) at kernel/qapplication.cpp:3492
#20 0x00007f12dd682148 in QCoreApplication::notifyInternal2 (receiver=0x561df953c820, event=event@entry=0x7fff7d818200) at kernel/qcoreapplication.cpp:1044
#21 0x00007f12dd6b6d58 in QCoreApplication::sendEvent (event=0x7fff7d818200, receiver=<optimized out>) at kernel/qcoreapplication.h:234
#22 QObjectPrivate::setParent_helper (this=this@entry=0x561df9542680, o=o@entry=0x0) at kernel/qobject.cpp:2018
#23 0x00007f12dd6b73bf in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1031
#24 0x00007f12c4128f57 in QtCurve::Style::~Style (this=0x561df974f420, __in_chrg=<optimized out>) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve.cpp:733
#25 0x00007f12c41291d9 in QtCurve::Style::~Style (this=0x561df974f420, __in_chrg=<optimized out>) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve.cpp:744
#26 0x00007f12c415a8fc in QtCurve::StylePlugin::~StylePlugin (this=0x561df9442c30, __in_chrg=<optimized out>) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve_plugin.cpp:158
#27 0x00007f12c415a9b9 in QtCurve::StylePlugin::~StylePlugin (this=0x561df9442c30, __in_chrg=<optimized out>) at /usr/src/debug/qtcurve-1.9.0/qt5/style/qtcurve_plugin.cpp:165
#28 0x00007f12dd677716 in QLibraryPrivate::unload (this=this@entry=0x561df9438490, flag=flag@entry=QLibraryPrivate::UnloadSys) at plugin/qlibrary.cpp:562
#29 0x00007f12dd669352 in QFactoryLoaderPrivate::~QFactoryLoaderPrivate (this=0x561df9441580, __in_chrg=<optimized out>) at plugin/qfactoryloader.cpp:86
#30 0x00007f12dd669499 in QFactoryLoaderPrivate::~QFactoryLoaderPrivate (this=0x561df9441580, __in_chrg=<optimized out>) at plugin/qfactoryloader.cpp:89
#31 0x00007f12dd6b73d3 in QScopedPointerDeleter<QObjectData>::cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:60
#32 QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::~QScopedPointer (this=0x7f12deadc898 <(anonymous namespace)::Q_QGS_loader::innerFunction()::holder+8>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:107
#33 QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:881
#34 0x00007f12de477589 in (anonymous namespace)::Q_QGS_loader::Holder::~Holder (this=<optimized out>, __in_chrg=<optimized out>) at styles/qstylefactory.cpp:53
#35 0x00007f12dcce5431 in __run_exit_handlers () from /lib64/libc.so.6
#36 0x00007f12dcce552a in exit () from /lib64/libc.so.6
#37 0x00007f12df31bea5 in KDBusService::KDBusService (this=<optimized out>, options=..., parent=<optimized out>) at /usr/src/debug/kdbusaddons-5.45.0-1.1.x86_64/src/kdbusservice.cpp:137
#38 0x0000561df8068ed0 in KicApp::KicApp (this=0x7fff7d818720, argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kinfocenter5-5.12.5-2.1.x86_64/main.cpp:67
#39 0x0000561df8065def in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kinfocenter5-5.12.5-2.1.x86_64/main.cpp:72

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