https://bugs.kde.org/show_bug.cgi?id=381927
--- Comment #2 from Raghavendra kamath <raghavendr.ra...@gmail.com> ---
Back trace from my duplicate bug report
Thread 14 (Thread 0x7fff9abad700 (LWP 22272)):
#0 0x00007fffebfbd0bf in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1 0x00007fffedb7365b in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQt5Core.so.5
#2 0x00007fffeee65211 in () at /usr/lib64/libQt5Widgets.so.5
#3 0x00007fffedb729e9 in () at /usr/lib64/libQt5Core.so.5
#4 0x00007fffebfb8744 in start_thread () at /lib64/libpthread.so.0
#5 0x00007fffecf6caad in clone () at /lib64/libc.so.6
Thread 13 (Thread 0x7fff9a3ac700 (LWP 22271)):
#0 0x00007fffebfbd0bf in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1 0x00007fffedb7365b in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib64/libQt5Core.so.5
#2 0x00007fffedb6cf96 in QSemaphore::tryAcquire(int, int) () at
/usr/lib64/libQt5Core.so.5
#3 0x00007ffff64387e3 in KisTileDataSwapper::waitForWork() (this=<optimized
out>) at
/run/media/raghu/Data/krita-build/src/krita/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:86
#4 0x00007ffff64389aa in KisTileDataSwapper::run() (this=0x7ffff68dea20
<_ZZN12_GLOBAL__N_116Q_QGS_s_instance13innerFunctionEvE6holder+64>)
at
/run/media/raghu/Data/krita-build/src/krita/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:92
#5 0x00007fffedb729e9 in () at /usr/lib64/libQt5Core.so.5
#6 0x00007fffebfb8744 in start_thread () at /lib64/libpthread.so.0
#7 0x00007fffecf6caad in clone () at /lib64/libc.so.6
Thread 3 (Thread 0x7fffd6b3b700 (LWP 22255)):
#0 0x00007fffecf6420d in poll () at /lib64/libc.so.6
#1 0x00007fffea0b5314 in () at /usr/lib64/libglib-2.0.so.0
#2 0x00007fffea0b542c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#3 0x00007fffedd8531c in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt5Core.so.5
#4 0x00007fffedd32feb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt5Core.so.5
#5 0x00007fffedb6df1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6 0x00007ffff0f17295 in () at /usr/lib64/libQt5DBus.so.5
#7 0x00007fffedb729e9 in () at /usr/lib64/libQt5Core.so.5
#8 0x00007fffebfb8744 in start_thread () at /lib64/libpthread.so.0
#9 0x00007fffecf6caad in clone () at /lib64/libc.so.6
Thread 2 (Thread 0x7fffdfeeb700 (LWP 22254)):
#0 0x00007fffecf6420d in poll () at /lib64/libc.so.6
#1 0x00007ffff0adb3e2 in () at /usr/lib64/libxcb.so.1
#2 0x00007ffff0adcfcf in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3 0x00007fffe2437839 in () at /usr/lib64/libQt5XcbQpa.so.5
#4 0x00007fffedb729e9 in () at /usr/lib64/libQt5Core.so.5
#5 0x00007fffebfb8744 in start_thread () at /lib64/libpthread.so.0
#6 0x00007fffecf6caad in clone () at /lib64/libc.so.6
Thread 1 (Thread 0x7ffff7f96900 (LWP 22250)):
#0 0x00007ffff7611e27 in QList<QString>::~QList() (this=0x7fffffffc2a0,
__in_chrg=<optimized out>) at /usr/include/qt5/QtCore/qlist.h:814
#1 0x00007ffff793f112 in KisPaletteModel::index(int, int, QModelIndex const&)
const (this=0x7fffffffc2a0, __in_chrg=<optimized out>) at
/usr/include/qt5/QtCore/qstringlist.h:93
#2 0x00007ffff793f112 in KisPaletteModel::index(int, int, QModelIndex const&)
const (this=0x7fffffffc2a0, __in_chrg=<optimized out>) at
/usr/include/qt5/QtCore/qglobal.h:919
#3 0x00007ffff793f112 in KisPaletteModel::index(int, int, QModelIndex const&)
const (this=0x126d2e50, row=-133201447, column=8, parent=...) at
/run/media/raghu/Data/krita-build/src/krita/libs/ui/KisPaletteModel.cpp:248
#4 0x00007ffff793c6b7 in KisPaletteModel::getLastEntryIndex()
(this=this@entry=0x126d2e50) at
/run/media/raghu/Data/krita-build/src/krita/libs/ui/KisPaletteModel.cpp:71
#5 0x00007ffff793c823 in KisPaletteModel::addColorSetEntry(KoColorSetEntry,
QString) (this=0x126d2e50, entry=..., groupName=...) at
/run/media/raghu/Data/krita-build/src/krita/libs/ui/KisPaletteModel.cpp:325
#6 0x00007ffff7943166 in KisPaletteView::addEntryWithDialog(KoColor)
(this=0x126bf420, color=...) at
/run/media/raghu/Data/krita-build/src/krita/libs/ui/kis_palette_view.cpp:118
#7 0x00007fff9b817d8d in PaletteDockerDock::addColorForeground()
(this=0x126bbc30) at
/run/media/raghu/Data/krita-build/src/krita/plugins/dockers/palettedocker/palettedocker_dock.cpp:191
#8 0x00007fff9b81dda5 in PaletteDockerDock::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (_o=0x126bbc30, _c=<optimized out>,
_id=<optimized out>, _a=<optimized out>)
at
/run/media/raghu/Data/krita-build/build/plugins/dockers/palettedocker/moc_palettedocker_dock.cpp:98
#9 0x00007fffedd5ebc1 in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib64/libQt5Core.so.5
#10 0x00007fffeed36702 in QAbstractButton::clicked(bool) () at
/usr/lib64/libQt5Widgets.so.5
#11 0x00007fffeed368fa in () at /usr/lib64/libQt5Widgets.so.5
#12 0x00007fffeed37928 in () at /usr/lib64/libQt5Widgets.so.5
#13 0x00007fffeed37aa4 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) ()
at /usr/lib64/libQt5Widgets.so.5
#14 0x00007fffeedfba3a in QToolButton::mouseReleaseEvent(QMouseEvent*) () at
/usr/lib64/libQt5Widgets.so.5
#15 0x00007fffeec81c9a in QWidget::event(QEvent*) () at
/usr/lib64/libQt5Widgets.so.5
#16 0x00007fffeedfbb19 in QToolButton::event(QEvent*) () at
/usr/lib64/libQt5Widgets.so.5
#17 0x00007fffeec3fe3c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib64/libQt5Widgets.so.5
#18 0x00007fffeec44d14 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib64/libQt5Widgets.so.5
#19 0x00007ffff78af497 in KisApplication::notify(QObject*, QEvent*)
(this=<optimized out>, receiver=0x126cff20, event=0x7fffffffcd60) at
/run/media/raghu/Data/krita-build/src/krita/libs/ui/KisApplication.cpp:558
#20 0x00007fffedd34fd5 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib64/libQt5Core.so.5
#21 0x00007fffeec43a10 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at
/usr/lib64/libQt5Widgets.so.5
#22 0x00007fffeec9a911 in () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007fffeec9ceb3 in () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007fffeec3fe3c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib64/libQt5Widgets.so.5
#25 0x00007fffeec4449a in QApplication::notify(QObject*, QEvent*) () at
/usr/lib64/libQt5Widgets.so.5
---Type <return> to continue, or q <return> to quit---
#26 0x00007ffff78af497 in KisApplication::notify(QObject*, QEvent*)
(this=<optimized out>, receiver=0x1288eb20, event=0x7fffffffd230) at
/run/media/raghu/Data/krita-build/src/krita/libs/ui/KisApplication.cpp:558
#27 0x00007fffedd34fd5 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib64/libQt5Core.so.5
#28 0x00007fffee28868b in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() at /usr/lib64/libQt5Gui.so.5
#29 0x00007fffee289e05 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() at /usr/lib64/libQt5Gui.so.5
#30 0x00007fffee26beeb in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib64/libQt5Gui.so.5
#31 0x00007fffe2464bc0 in () at /usr/lib64/libQt5XcbQpa.so.5
#32 0x00007fffea0b5134 in g_main_context_dispatch () at
/usr/lib64/libglib-2.0.so.0
#33 0x00007fffea0b5388 in () at /usr/lib64/libglib-2.0.so.0
#34 0x00007fffea0b542c in g_main_context_iteration () at
/usr/lib64/libglib-2.0.so.0
#35 0x00007fffedd8531c in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt5Core.so.5
#36 0x00007fffedd32feb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt5Core.so.5
#37 0x00007fffedd3aed6 in QCoreApplication::exec() () at
/usr/lib64/libQt5Core.so.5
#38 0x000000000040591b in main(int, char**) (argc=1, argv=<optimized out>) at
/run/media/raghu/Data/krita-build/src/krita/krita/main.cc:269
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