https://bugs.kde.org/show_bug.cgi?id=434562

            Bug ID: 434562
           Summary: Painting with a lightness mask crashes.
           Product: krita
           Version: unspecified
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: General
          Assignee: krita-bugs-n...@kde.org
          Reporter: griffinval...@gmail.com
  Target Milestone: ---

Application: krita (5.0.0-prealpha (git 8f7d9d5))

Qt Version: 5.15.2
Frameworks Version: 5.79.0
Operating System: Linux 5.4.0-66-generic x86_64
Windowing System: X11
Drkonqi Version: 5.21.1
Distribution: KDE neon User Edition 5.21

-- Information about the crash:
I was just drawing with the lightness/impasto pixel brushes, and got this
crash. Nothing more or less than doodling on an 8bit/c RGBA A4 @ 300dpi

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Krita (krita), signal: Aborted

[New LWP 319283]
[New LWP 319284]
[New LWP 319285]
[New LWP 319286]
[New LWP 319287]
[New LWP 319340]
[New LWP 319345]
[New LWP 319346]
[New LWP 319353]
[New LWP 319366]
[New LWP 319367]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f6322b4faff in __GI___poll (fds=0x7ffc201e95a8, nfds=1, timeout=1000) at
../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f631d855d00 (LWP 319258))]

Thread 12 (Thread 0x7f629ef7a700 (LWP 319367)):
#0  0x00007f632035c07d in g_source_ref () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f632035c148 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f632035d64b in g_main_context_prepare () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f632035e0bb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f632035e2c3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6323135fbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6322ef4a12 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f630f3a438a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f62ec905700 (LWP 319366)):
#0  0x00007f6322b4faff in __GI___poll (fds=0x7f6298003ec0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f632035e18e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f632035e2c3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6323135fbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6322ef4a12 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f630f0eefa9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f62b679a700 (LWP 319353)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6322ef8130 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6322ef7f96 in QSemaphore::tryAcquire(int, int) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f632454d027 in KisTileDataSwapper::waitForWork() (this=<optimized
out>) at
/home/wolthera/krita/src/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:74
#4  0x00007f632454d22a in KisTileDataSwapper::run() (this=0x7f6324a68bc0
<(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder+64>) at
/home/wolthera/krita/src/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:80
#5  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f62f2ffd700 (LWP 319346)):
#0  0x00007f6322b4faff in __GI___poll (fds=0x7f62ac004e60, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f632035e18e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f632035e2c3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6323135fbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6322ef4a12 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f62f37fe700 (LWP 319345)):
#0  0x00007f632035d646 in g_main_context_prepare () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f632035e0bb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f632035e2c3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6323135fbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6322ef4a12 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f62f3fff700 (LWP 319340)):
#0  0x00007f6320387e84 in g_thread_self () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f632035e2b3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6323135fbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6322ef4a12 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f630dd31700 (LWP 319287)):
#0  0x00007f632035dd5d in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f632035e220 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f632035e2c3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6323135fbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6322ef4a12 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f63200c9f4b in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f6322ef5bac in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f630e6cf700 (LWP 319286)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f62fc001d78) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f62fc001d28,
cond=0x7f62fc001d50) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f62fc001d50, mutex=0x7f62fc001d28) at
pthread_cond_wait.c:638
#3  0x00007f6316d5eb5b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f6316d5e75b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f63117be700 (LWP 319285)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f62fc001d78) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f62fc001d28,
cond=0x7f62fc001d50) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f62fc001d50, mutex=0x7f62fc001d28) at
pthread_cond_wait.c:638
#3  0x00007f6316d5eb5b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f6316d5e75b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f6310fbd700 (LWP 319284)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f62fc001d78) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f62fc001d28,
cond=0x7f62fc001d50) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f62fc001d50, mutex=0x7f62fc001d28) at
pthread_cond_wait.c:638
#3  0x00007f6316d5eb5b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f6316d5e75b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f63107bc700 (LWP 319283)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f62fc001d78) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f62fc001d28,
cond=0x7f62fc001d50) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f62fc001d50, mutex=0x7f62fc001d28) at
pthread_cond_wait.c:638
#3  0x00007f6316d5eb5b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f6316d5e75b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f6320c2c609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f6322b5c293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f631d855d00 (LWP 319258)):
[KCrash Handler]
#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#5  0x00007f6322a5f859 in __GI_abort () at abort.c:79
#6  0x00007f6322aca3ee in __libc_message (action=action@entry=do_abort,
fmt=fmt@entry=0x7f6322bf407c "*** %s ***: terminated\n") at
../sysdeps/posix/libc_fatal.c:155
#7  0x00007f6322b6cb4a in __GI___fortify_fail (msg=msg@entry=0x7f6322bf4064
"stack smashing detected") at fortify_fail.c:26
#8  0x00007f6322b6cb16 in __stack_chk_fail () at stack_chk_fail.c:24
#9  0x00007f632350ac1b in  () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f632350ac4f in QImage::QImage(QSize const&, QImage::Format) () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#11 0x00007f632350ac8d in QImage::QImage(int, int, QImage::Format) () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007f632350ba22 in QImage::copy(QRect const&) const () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f63229ea833 in QImage::copy(int, int, int, int) const (h=<optimized
out>, w=<optimized out>, y=-1, x=-1, this=0x7ffc201ea3d0) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qrect.h:184
#14 KisQImagePyramid::appendPyramidLevel(QImage const&) (this=0x560292c8a5c0,
image=...) at /home/wolthera/krita/src/libs/brush/kis_qimage_pyramid.cpp:251
#15 0x00007f63229eaa05 in KisQImagePyramid::KisQImagePyramid(QImage const&,
bool) (this=0x560292c8a5c0, baseImage=..., useSmoothingForEnlarging=true) at
/home/wolthera/krita/src/libs/brush/kis_qimage_pyramid.cpp:39
#16 0x00007f63229eb390 in KisSharedQImagePyramid::pyramid(KisBrush const*)
const (this=0x560284b24b30, brush=brush@entry=0x5602915b08a0) at
/home/wolthera/krita/src/libs/brush/KisSharedQImagePyramid.cpp:33
#17 0x00007f63229c7d1c in
KisBrush::generateMaskAndApplyMaskOrCreateDab(KisSharedPtr<KisFixedPaintDevice>,
KisBrush::ColoringInformation*, KisDabShape const&, KisPaintInformation const&,
double, double, double, double) const (this=0x5602915b08a0, dst=...,
coloringInformation=0x7ffc201ea760, shape=..., info_=..., subPixelX=0,
subPixelY=0, softnessFactor=<optimized out>, lightnessStrength=1) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qsharedpointer_impl.h:307
#18 0x00007f63229c548c in KisBrush::mask(KisSharedPtr<KisFixedPaintDevice>,
KoColor const&, KisDabShape const&, KisPaintInformation const&, double, double,
double, double) const (this=0x5602915b08a0, dst=..., color=..., shape=...,
info=..., subPixelX=0, subPixelY=0, softnessFactor=1, lightnessStrength=1) at
/usr/include/c++/9/bits/atomic_base.h:318
#19 0x00007f63229c65f2 in KisBrush::generateBoundary() const
(this=0x5602915b08a0) at /usr/include/c++/9/bits/atomic_base.h:318
#20 0x00007f63229c6c78 in KisBrush::boundary() const (this=0x5602915b08a0) at
/home/wolthera/krita/src/libs/brush/kis_brush.cpp:667
#21 KisBrush::outline() const (this=0x5602915b08a0) at
/home/wolthera/krita/src/libs/brush/kis_brush.cpp:693
#22 0x00007f62f977f572 in
KisBrushBasedPaintOpSettings::brushOutlineImpl(KisPaintInformation const&,
KisPaintOpSettings::OutlineMode const&, double, double) (this=0x560292e1f840,
info=..., mode=..., alignForZoom=0.50000001490116119,
additionalScale=<optimized out>) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qsharedpointer_impl.h:307
#23 0x00007f62f977fc1a in
KisBrushBasedPaintOpSettings::brushOutline(KisPaintInformation const&,
KisPaintOpSettings::OutlineMode const&, double)
(this=this@entry=0x560292e1f840, info=..., mode=..., alignForZoom=<optimized
out>) at
/home/wolthera/krita/src/plugins/paintops/libpaintop/kis_brush_based_paintop_settings.cpp:134
#24 0x00007f63259dfed6 in KisToolFreehandHelper::paintOpOutline(QPointF const&,
KoPointerEvent const*, KisPinnedSharedPtr<KisPaintOpSettings>,
KisPaintOpSettings::OutlineMode) const (this=this@entry=0x56028529d720,
savedCursorPos=..., event=event@entry=0x7ffc201eae70, globalSettings=...,
mode=..., mode@entry=...) at
/home/wolthera/krita/src/libs/global/kis_shared_ptr.h:167
#25 0x00007f63259d6c62 in KisToolFreehand::getOutlinePath(QPointF const&,
KoPointerEvent const*, KisPaintOpSettings::OutlineMode) (this=0x5602864a97c0,
documentPos=..., event=0x7ffc201eae70, outlineMode=...) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qsharedpointer_impl.h:307
#26 0x00007f63259ec6e9 in KisToolPaint::requestUpdateOutline(QPointF const&,
KoPointerEvent const*) (this=0x5602864a97c0, outlineDocPoint=...,
event=0x7ffc201eae70) at
/home/wolthera/krita/src/libs/ui/tool/kis_tool_paint.cc:700
#27 0x00007f63259d5b16 in
KisToolFreehand::continuePrimaryAction(KoPointerEvent*) (this=0x5602864a97c0,
event=0x7ffc201eae70) at
/home/wolthera/krita/src/libs/ui/tool/kis_tool_freehand.cc:222
#28 0x00007f63257280e4 in
KisToolProxy::forwardToTool(KisToolProxy::ActionState, KisTool::ToolAction,
QEvent*, QPointF const&) (this=<optimized out>, state=KisToolProxy::CONTINUE,
action=KisTool::Primary, event=0x7ffc201eb740, docPoint=...) at
/home/wolthera/krita/src/libs/ui/canvas/kis_tool_proxy.cpp:184
#29 0x00007f632572823f in KisToolProxy::forwardEvent(KisToolProxy::ActionState,
KisTool::ToolAction, QEvent*, QEvent*) (this=0x560286cb9340,
state=KisToolProxy::CONTINUE, action=KisTool::Primary, event=<optimized out>,
originalEvent=<optimized out>) at
/home/wolthera/krita/src/libs/ui/canvas/kis_tool_proxy.cpp:121
#30 0x00007f6325b13fe2 in KisShortcutMatcher::pointerMoved(QEvent*)
(this=this@entry=0x560280527500, event=event@entry=0x7ffc201eb740) at
/home/wolthera/krita/src/libs/ui/input/kis_shortcut_matcher.cpp:327
#31 0x00007f6325afd3bb in
KisInputManager::Private::handleCompressedTabletEvent(QEvent*)
(this=0x5602805274d0, event=event@entry=0x7ffc201eb740) at
/home/wolthera/krita/src/libs/ui/input/kis_input_manager_p.cpp:683
#32 0x00007f6325af44c0 in
KisInputManager::compressMoveEventCommon<QTabletEvent>(QTabletEvent*)
(event=0x7ffc201eb740, this=0x56028052f070) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:236
#33 KisInputManager::eventFilterImpl(QEvent*) (this=0x56028052f070,
event=0x7ffc201eb740) at
/home/wolthera/krita/src/libs/ui/input/kis_input_manager.cpp:572
#34 0x00007f63230db403 in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f6323bb2db2 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f6323bbc02f in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f6325b7dd7d in KisApplication::notify(QObject*, QEvent*)
(this=<optimized out>, receiver=0x5602849c0610, event=0x7ffc201eb740) at
/home/wolthera/krita/src/libs/ui/KisApplication.cpp:710
#38 0x00007f63230db69a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f6323c13c67 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007f6323c14189 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007f6323bb2dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007f6323bbbbb8 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007f6325b7dd7d in KisApplication::notify(QObject*, QEvent*)
(this=<optimized out>, receiver=0x560280183f20, event=0x7ffc201ebbf0) at
/home/wolthera/krita/src/libs/ui/KisApplication.cpp:710
#44 0x00007f63230db69a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f63234be058 in
QGuiApplicationPrivate::processTabletEvent(QWindowSystemInterfacePrivate::TabletEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#46 0x00007f63234beb14 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#47 0x00007f63234967ac in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#48 0x00007f631d400d7e in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#49 0x00007f632035df9d in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f632035e220 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f632035e2c3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f6323135fa2 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#53 0x00007f63230da1ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007f63230e2354 in QCoreApplication::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x000056027a5245ed in main(int, char**) (argc=<optimized out>,
argv=0x7ffc201ec268) at /home/wolthera/krita/src/krita/main.cc:663
[Inferior 1 (process 319258) detached]

Possible duplicates by query: bug 434342, bug 434257, bug 434253, bug 431865,
bug 431665.

Reported using DrKonqi

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