https://bugs.kde.org/show_bug.cgi?id=410426

            Bug ID: 410426
           Summary: Freeze while painting on krita/4.2 branch
           Product: krita
           Version: nightly build (please specify the git hash!)
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: Tile manager
          Assignee: krita-bugs-n...@kde.org
          Reporter: i...@davidrevoy.com
  Target Milestone: ---

Hi, I could paint more than 10h with 4.2.x compiled (git df673e7), but here is
a  freeze I obtained with backtrace while inking:

(Kubuntu, compiled, with stock Qt in package)

BACKTRACE:

Accessing uninitialized random source!
[New Thread 0x7fff52dfd700 (LWP 10853)]
[New Thread 0x7fff515fb700 (LWP 10854)]
Accessing uninitialized random source!
[New Thread 0x7fff7ebfa700 (LWP 10855)]
Accessing uninitialized random source!
[Thread 0x7fff52dfd700 (LWP 10853) exited]
[Thread 0x7fff515fb700 (LWP 10854) exited]
[Thread 0x7fff7ebfa700 (LWP 10855) exited]
Accessing uninitialized random source!
[New Thread 0x7fff7ebfa700 (LWP 10856)]
[New Thread 0x7fff515fb700 (LWP 10857)]
[New Thread 0x7fff52dfd700 (LWP 10858)]
[New Thread 0x7fff7e3f9700 (LWP 10859)]
[New Thread 0x7fff525fc700 (LWP 10860)]

Thread 1 "krita" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) thread apply all bt

Thread 481 (Thread 0x7fff525fc700 (LWP 10860)):
#0  0x00007fffecb5fed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, 
    reltime=0x7fff525fbc40, expected=0, futex_word=0x7fff6406d390)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fff525fbd00, mutex=0x7fff6406d340,
cond=0x7fff6406d368)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fff6406d368, mutex=0x7fff6406d340,
abstime=0x7fff525fbd00)
    at pthread_cond_wait.c:667
#3  0x00007ffff37ad458 in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff37a952d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffecb596db in start_thread (arg=0x7fff525fc700) at
pthread_create.c:463
#7  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 480 (Thread 0x7fff7e3f9700 (LWP 10859)):
#0  0x00007fffecb5fed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, 
    reltime=0x7fff7e3f8c40, expected=0, futex_word=0x7fff74a29710)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fff7e3f8d00, mutex=0x7fff74a296c0,
cond=0x7fff74a296e8)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fff74a296e8, mutex=0x7fff74a296c0,
abstime=0x7fff7e3f8d00)
    at pthread_cond_wait.c:667
#3  0x00007ffff37ad458 in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff37a952d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffecb596db in start_thread (arg=0x7fff7e3f9700) at
pthread_create.c:463
#7  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
---Type <return> to continue, or q <return> to quit---

Thread 479 (Thread 0x7fff52dfd700 (LWP 10858)):
#0  0x00007fffecb5fed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, 
    reltime=0x7fff52dfcc40, expected=0, futex_word=0x7fff744e4ad0)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fff52dfcd00, mutex=0x7fff744e4a80,
cond=0x7fff744e4aa8)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fff744e4aa8, mutex=0x7fff744e4a80,
abstime=0x7fff52dfcd00)
    at pthread_cond_wait.c:667
#3  0x00007ffff37ad458 in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff37a952d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffecb596db in start_thread (arg=0x7fff52dfd700) at
pthread_create.c:463
#7  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 478 (Thread 0x7fff515fb700 (LWP 10857)):
#0  0x00007fffecb5fed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, 
    reltime=0x7fff515fac40, expected=0, futex_word=0x7fff74af6ea0)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fff515fad00, mutex=0x7fff74af6e50,
cond=0x7fff74af6e78)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fff74af6e78, mutex=0x7fff74af6e50,
abstime=0x7fff515fad00)
    at pthread_cond_wait.c:667
#3  0x00007ffff37ad458 in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff37a952d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffecb596db in start_thread (arg=0x7fff515fb700) at
pthread_create.c:463
#7  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
---Type <return> to continue, or q <return> to quit---

Thread 477 (Thread 0x7fff7ebfa700 (LWP 10856)):
#0  0x00007fffecb5fed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, 
    reltime=0x7fff7ebf9c40, expected=0, futex_word=0x555569172870)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fff7ebf9d00, mutex=0x555569172820,
cond=0x555569172848)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x555569172848, mutex=0x555569172820,
abstime=0x7fff7ebf9d00)
    at pthread_cond_wait.c:667
#3  0x00007ffff37ad458 in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff37a952d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffecb596db in start_thread (arg=0x7fff7ebfa700) at
pthread_create.c:463
#7  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fffa4be4700 (LWP 10186)):
#0  0x00007ffff2e82bf9 in __GI___poll (fds=0x7fff98004b40, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffeb4135c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffeb4136dc in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff39e390b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff39889ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37a722a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fffecb596db in start_thread (arg=0x7fffa4be4700) at
pthread_create.c:463
#8  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

---Type <return> to continue, or q <return> to quit---
Thread 10 (Thread 0x7fffa61e8700 (LWP 10185)):
#0  0x00007ffff2e82bf9 in __GI___poll (fds=0x7fffa0003ce0, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffeb4135c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffeb4136dc in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff39e38ef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff39889ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37a722a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffd6efb6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fffecb596db in start_thread (arg=0x7fffa61e8700) at
pthread_create.c:463
#9  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fffb91d0700 (LWP 10184)):
#0  0x00007ffff2e529d0 in __GI___nanosleep (requested_time=0x7fffb91cfdc0,
remaining=0x7fffb91cfdc0)
    at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x00007ffff39e327d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ffff574e1da in KisTileDataSwapper::run (
    this=0x7ffff5c49e40
<_ZZN12_GLOBAL__N_116Q_QGS_s_instance13innerFunctionEvE6holder+64>)
    at
/home/deevad/sources/krita/src/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:97
#3  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fffecb596db in start_thread (arg=0x7fffb91d0700) at
pthread_create.c:463
#5  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fffb99d1700 (LWP 10183)):
#0  0x00007fffecb5fed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, 
    reltime=0x7fffb99d0bc0, expected=0, futex_word=0x555560fe2ec0)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
---Type <return> to continue, or q <return> to quit---
#1  __pthread_cond_wait_common (abstime=0x7fffb99d0c80, mutex=0x555560fe2e70,
cond=0x555560fe2e98)
    at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x555560fe2e98, mutex=0x555560fe2e70,
abstime=0x7fffb99d0c80)
    at pthread_cond_wait.c:667
#3  0x00007ffff37ad458 in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff37a5e5f in QSemaphore::tryAcquire(int, int) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff572eb6b in KisTileDataPooler::waitForWork (
    this=0x7ffff5c49e00
<_ZZN12_GLOBAL__N_116Q_QGS_s_instance13innerFunctionEvE6holder>)
    at
/home/deevad/sources/krita/src/libs/image/tiles3/kis_tile_data_pooler.cc:162
#6  0x00007ffff572f41a in KisTileDataPooler::run (
    this=0x7ffff5c49e00
<_ZZN12_GLOBAL__N_116Q_QGS_s_instance13innerFunctionEvE6holder>)
    at
/home/deevad/sources/krita/src/libs/image/tiles3/kis_tile_data_pooler.cc:186
#7  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fffecb596db in start_thread (arg=0x7fffb99d1700) at
pthread_create.c:463
#9  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fffbb081700 (LWP 10182)):
#0  0x00007ffff2e82bf9 in __GI___poll (fds=0x7fffb4003ce0, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffeb4135c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffeb4136dc in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff39e38ef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff39889ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37a722a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fffecb596db in start_thread (arg=0x7fffbb081700) at
pthread_create.c:463
---Type <return> to continue, or q <return> to quit---
#8  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fffd37e8700 (LWP 10181)):
#0  0x00007ffff2e82bf9 in __GI___poll (fds=0x7fffcc018340, nfds=4, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffeb4135c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffeb4136dc in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff39e38ef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff39889ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff37a722a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fffecd86d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fffecb596db in start_thread (arg=0x7fffd37e8700) at
pthread_create.c:463
#9  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fffdedc6700 (LWP 10180)):
#0  0x00007ffff2e82bf9 in __GI___poll (fds=0x7fffdedc5ca8, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffea6a8747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fffea6aa36a in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fffe172f2a9 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ffff37ac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fffecb596db in start_thread (arg=0x7fffdedc6700) at
pthread_create.c:463
#6  0x00007ffff2e8f88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ffff7f9f640 (LWP 10171)):
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff6a2bd7d in KisShapeLayer::~KisShapeLayer (this=0x555562b2f510,
__in_chrg=<optimized out>)
---Type <return> to continue, or q <return> to quit---
    at /home/deevad/sources/krita/src/libs/ui/flake/kis_shape_layer.cc:260
#2  0x00007ffff6a2be39 in KisShapeLayer::~KisShapeLayer (this=0x555562b2f510,
__in_chrg=<optimized out>)
    at /home/deevad/sources/krita/src/libs/ui/flake/kis_shape_layer.cc:262
#3  0x00007ffff6d848c0 in KisSharedPtr<KisReferenceImagesLayer>::deref
(sp=<synthetic pointer>, 
    t=0x555562b2f510) at
/home/deevad/sources/krita/src/libs/global/kis_shared_ptr.h:211
#4  KisSharedPtr<KisReferenceImagesLayer>::deref (this=<synthetic pointer>)
    at /home/deevad/sources/krita/src/libs/global/kis_shared_ptr.h:225
#5  KisSharedPtr<KisReferenceImagesLayer>::~KisSharedPtr (this=<synthetic
pointer>, 
    __in_chrg=<optimized out>) at
/home/deevad/sources/krita/src/libs/global/kis_shared_ptr.h:109
#6  KisReferenceImagesDecoration::drawDecoration (this=<optimized out>, gc=..., 
    converter=<optimized out>)
    at
/home/deevad/sources/krita/src/libs/ui/KisReferenceImagesDecoration.cpp:130
#7  0x00007ffff6993153 in KisCanvasDecoration::paint
(this=this@entry=0x555564b94b60, gc=..., 
    updateArea=..., converter=converter@entry=0x555562719760,
canvas=canvas@entry=0x555562719800)
    at
/home/deevad/sources/krita/src/libs/ui/canvas/kis_canvas_decoration.cc:81
#8  0x00007ffff697ba83 in KisCanvasWidgetBase::drawDecorations
(this=0x555564ba8ec8, gc=..., 
    updateWidgetRect=...) at
/home/deevad/sources/krita/src/libs/ui/canvas/kis_canvas_widget_base.cpp:152
#9  0x00007ffff6b6f2fd in KisOpenGLCanvas2::renderDecorations
(this=this@entry=0x555564ba8e90, 
    painter=painter@entry=0x7fffffffd2f0)
    at /home/deevad/sources/krita/src/libs/ui/opengl/kis_opengl_canvas2.cpp:953
#10 0x00007ffff6b75e06 in KisOpenGLCanvas2::paintGL (this=0x555564ba8e90)
    at /home/deevad/sources/krita/src/libs/ui/opengl/kis_opengl_canvas2.cpp:410
#11 0x00007ffff476785d in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007ffff4747038 in QWidget::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007ffff470882c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007ffff47100f4 in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007ffff6cdd1c7 in KisApplication::notify (this=<optimized out>,
receiver=0x555564ba8e90, 
    event=0x7fffffffd6b0) at
/home/deevad/sources/krita/src/libs/ui/KisApplication.cpp:653
---Type <return> to continue, or q <return> to quit---
#16 0x00007ffff398a9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ffff474018a in QWidgetPrivate::sendPaintEvent(QRegion const&) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007ffff4717704 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007ffff4718095 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007ffff472f66f in QWidgetPrivate::syncBackingStore() ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007ffff47471a8 in QWidget::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007ffff485ac4b in QMainWindow::event(QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007ffff535b267 in KMainWindow::event (this=this@entry=0x55555776e050,
ev=ev@entry=0x5555616854f0)
    at
/home/deevad/sources/krita/src/libs/widgetutils/xmlgui/kmainwindow.cpp:765
#24 0x00007ffff5391849 in KXmlGuiWindow::event (this=0x55555776e050,
ev=0x5555616854f0)
    at
/home/deevad/sources/krita/src/libs/widgetutils/xmlgui/kxmlguiwindow.cpp:125
#25 0x00007ffff470882c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007ffff47100f4 in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007ffff6cdd1c7 in KisApplication::notify (this=<optimized out>,
receiver=0x55555776e050, 
    event=0x5555616854f0) at
/home/deevad/sources/krita/src/libs/ui/KisApplication.cpp:653
#28 0x00007ffff398a9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007ffff398d11d in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007ffff39e42c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fffeb413417 in g_main_context_dispatch () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fffeb413650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fffeb4136dc in g_main_context_iteration () from
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ffff39e38ef in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007ffff39889ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007ffff3991a84 in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x0000555555e4d48e in main (argc=<optimized out>, argv=0x7fffffffe3f8)
    at /home/deevad/sources/krita/src/krita/main.cc:535

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