#0  0x00007ffff50b32af in qMapLessThanKey<int> (key1=<error reading variable>, key2=@0x7fffc5ffd510: 1) at /usr/include/qt5/QtCore/qmap.h:71
#1  0x00007ffff50b3266 in QMapNode<int, KisSwatch>::lowerBound (this=0x33e8130, akey=@0x7fffc5ffd510: 1) at /usr/include/qt5/QtCore/qmap.h:155
#2  0x00007ffff50b20fc in QMapData<int, KisSwatch>::findNode (this=0x33e7f50, akey=@0x7fffc5ffd510: 1) at /usr/include/qt5/QtCore/qmap.h:287
#3  0x00007ffff50b1426 in QMap<int, KisSwatch>::contains (this=0x7fffb401f1b0, akey=@0x7fffc5ffd510: 1) at /usr/include/qt5/QtCore/qmap.h:700
#4  0x00007ffff50b0488 in KisSwatchGroup::checkEntry (this=0x1c66398, column=3, row=1) at ../libs/pigment/resources/KisSwatchGroup.cpp:84
#5  0x00007ffff50b06d8 in KisSwatchGroup::getEntry (this=0x1c66398, column=3, row=1) at ../libs/pigment/resources/KisSwatchGroup.cpp:134
#6  0x00007ffff509c13a in KoColorSet::getColorGlobal (this=0x217e4e0, x=3, y=1) at ../libs/pigment/resources/KoColorSet.cpp:309
#7  0x00007fffdfec61bc in KisFilterPalettize::processImpl (this=0x20f07d0, device=..., applyRect=..., config=..., progressUpdater=0x7fffb4009ec0)
    at ../plugins/filters/palettize/palettize.cpp:201
#8  0x00007ffff6e0559f in KisFilterStrokeStrategy::doStrokeCallback (this=0x106ba460, data=0x106f34e0) at ../libs/ui/tool/strokes/kis_filter_stroke_strategy.cpp:145
#9  0x00007ffff5a7f906 in SimpleStrokeJobStrategy::run (this=0x106dd930, data=0x106f34e0) at ../libs/image/kis_simple_stroke_strategy.cpp:51
#10 0x00007ffff5a85d76 in KisStrokeJob::run (this=0x106f1900) at ../libs/image/kis_stroke_job.h:44
#11 0x00007ffff58dee78 in KisUpdateJobItem::run (this=0xb8d0730) at libs/image/kritaimage_autogen/EWIEGA46WW/../../../../../libs/image/kis_update_job_item.h:91
#12 0x00007ffff28954c2 in QThreadPoolThread::run (this=0xfc75200) at thread/qthreadpool.cpp:99
#13 0x00007ffff28921a2 in QThreadPrivate::start (arg=0xfc75200) at thread/qthread_unix.cpp:360
#14 0x00007ffff1d55faa in start_thread () from /lib64/libpthread.so.0
#15 0x00007ffff23bb73f in clone () from /lib64/libc.so.6