Application: krita (4.1.1)

Qt Version: 5.11.1
Frameworks Version: 5.49.0
Operating System: Linux 4.15.0-33-generic x86_64
Distribution: KDE neon User Edition 5.13

-- Information about the crash:
- What I was doing when the application crashed:

There were two files open in Krita, each of them more then 2GB with a lot of layer. Simple I was working on different layers on the first file and tried to save it and right after I pressed CTRL+s, I closed the second file then it's crashed. Anyway, I don't thing there was any specific issue here related what was I doing. It's clear Krita is unstable with more then one big file with a lot of layers.
Basically I'd reopen this bug report:
https://bugs.kde.org/show_bug.cgi?id=394974
Obviously I'll not open it since it's closed by me after my lot of uploading and involvement wasn't appreciated and I was childishly threatened. For me, it's clear, somehow Krita contribution is not for bug reports what can't be solved fast and easily.
So this is still an awkward situation because I still have a not so simple not so clear issue with Krita. I report this issue only because I have still hope in Krita. It's a basic thing when your work is lost by a software, you would report it to developers, wouldn't you?

The crash can be reproduced sometimes.

-- Backtrace:
Application: Krita (krita), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcec2488940 (LWP 23496))]

Thread 5 (Thread 0x7fce7a134700 (LWP 23515)):
#0  0x00007fcebe86c74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fceb6c6c38c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fce700033b0, timeout=<optimized out>, context=0x7fce70000990) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7fce70000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3835
#3  0x00007fceb6c6c49c in g_main_context_iteration (context=0x7fce70000990, may_block=may_block@entry=1) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007fcebf39a0bb in QEventDispatcherGlib::processEvents (this=0x7fce700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fcebf3415ba in QEventLoop::exec (this=this@entry=0x7fce7a133c00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fcebf1765e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007fce9ee17f86 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fcebf181727 in QThreadPrivate::start (arg=0xc9c2df0) at thread/qthread_unix.cpp:367
#9  0x00007fceb83106ba in start_thread (arg=0x7fce7a134700) at pthread_create.c:333
#10 0x00007fcebe87841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fce83b0f700 (LWP 23514)):
#0  0x00007fcebe86827d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fceb6caf6f0 in read (__nbytes=16, __buf=0x7fce83b0ea40, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fce940025b0) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gwakeup.c:210
#3  0x00007fceb6c6be74 in g_main_context_check (context=context@entry=0x7fce7c000990, max_priority=2147483647, fds=fds@entry=0x7fce7c004870, n_fds=n_fds@entry=1) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3632
#4  0x00007fceb6c6c330 in g_main_context_iterate (context=context@entry=0x7fce7c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3837
#5  0x00007fceb6c6c49c in g_main_context_iteration (context=0x7fce7c000990, may_block=may_block@entry=1) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3901
#6  0x00007fcebf39a0bb in QEventDispatcherGlib::processEvents (this=0x7fce7c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007fcebf3415ba in QEventLoop::exec (this=this@entry=0x7fce83b0ec50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#8  0x00007fcebf1765e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#9  0x00007fce9e98e195 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fcebf181727 in QThreadPrivate::start (arg=0xc87ea30) at thread/qthread_unix.cpp:367
#11 0x00007fceb83106ba in start_thread (arg=0x7fce83b0f700) at pthread_create.c:333
#12 0x00007fcebe87841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fce8330e700 (LWP 23511)):
#0  0x00007fcebe83d30d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebf399a2d in qt_nanosleep (amount=...) at kernel/qelapsedtimer_unix.cpp:195
#2  0x00007fcebf180be8 in QThread::msleep (msecs=msecs@entry=700) at thread/qthread_unix.cpp:537
#3  0x00007fcebc42365a in KisTileDataSwapper::run (this=0x7fcebc923cc0 <(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder+64>) at /workspace/build/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:97
#4  0x00007fcebf181727 in QThreadPrivate::start (arg=0x7fcebc923cc0 <(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder+64>) at thread/qthread_unix.cpp:367
#5  0x00007fceb83106ba in start_thread (arg=0x7fce8330e700) at pthread_create.c:333
#6  0x00007fcebe87841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fce9bcb8700 (LWP 23499)):
#0  0x00007fceb6cb0a79 in g_mutex_lock (mutex=mutex@entry=0x7fce94000990) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gthread-posix.c:1335
#1  0x00007fceb6c6b929 in g_main_context_prepare (context=context@entry=0x7fce94000990, priority=priority@entry=0x7fce9bcb7b00) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3444
#2  0x00007fceb6c6c2bb in g_main_context_iterate (context=context@entry=0x7fce94000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3820
#3  0x00007fceb6c6c49c in g_main_context_iteration (context=0x7fce94000990, may_block=may_block@entry=1) at /build/glib2.0-b4FPyK/glib2.0-2.48.2/./glib/gmain.c:3901
#4  0x00007fcebf39a0bb in QEventDispatcherGlib::processEvents (this=0x7fce940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fcebf3415ba in QEventLoop::exec (this=this@entry=0x7fce9bcb7c40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007fcebf1765e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007fceb853bf35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fcebf181727 in QThreadPrivate::start (arg=0x7fceb87b4d60) at thread/qthread_unix.cpp:367
#9  0x00007fceb83106ba in start_thread (arg=0x7fce9bcb8700) at pthread_create.c:333
#10 0x00007fcebe87841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fcec2488940 (LWP 23496)):
[KCrash Handler]
#6  0x00007fcec16b0554 in KisCanvas2::setDisplayFilter (this=0x3d907840, displayFilter=...) at /workspace/build/libs/ui/canvas/kis_canvas2.cpp:625
#7  0x00007fce86c4383c in LutDockerDock::updateDisplaySettings (this=this@entry=0xcdb9260) at /workspace/build/plugins/dockers/lut/lutdocker_dock.cpp:415
#8  0x00007fce86c44692 in LutDockerDock::refillControls (this=this@entry=0xcdb9260) at /workspace/build/plugins/dockers/lut/lutdocker_dock.cpp:580
#9  0x00007fce86c4529a in LutDockerDock::resetOcioConfiguration (this=this@entry=0xcdb9260) at /workspace/build/plugins/dockers/lut/lutdocker_dock.cpp:485
#10 0x00007fce86c46af0 in LutDockerDock::setCanvas (this=0xcdb9260, _canvas=<optimized out>) at /workspace/build/plugins/dockers/lut/lutdocker_dock.cpp:192
#11 0x00007fcebba0fb1c in KoCanvasControllerWidget::Private::activate (this=<optimized out>) at /workspace/build/libs/flake/KoCanvasControllerWidget.cpp:148
#12 0x00007fcec1a58b89 in KisViewManager::setCurrentView (this=0x99603a0, view=view@entry=0x1e4c2590) at /workspace/build/libs/ui/KisViewManager.cpp:496
#13 0x00007fcec1a1ea6a in KisMainWindow::setActiveView (this=this@entry=0xb127fa0, view=view@entry=0x1e4c2590) at /workspace/build/libs/ui/KisMainWindow.cpp:1308
#14 0x00007fcec1a2109b in KisMainWindow::setActiveSubWindow (this=this@entry=0xb127fa0, window=<optimized out>) at /workspace/build/libs/ui/KisMainWindow.cpp:2233
#15 0x00007fcec1a2134c in KisMainWindow::subWindowActivated (this=0xb127fa0) at /workspace/build/libs/ui/KisMainWindow.cpp:2058
#16 0x00007fcec1a2cd93 in KisMainWindow::qt_static_metacall (_o=0xb127fa0, _c=<optimized out>, _id=<optimized out>, _a=0x7ffd85f09f90) at /workspace/build/obj-x86_64-linux-gnu/libs/ui/moc_KisMainWindow.cpp:350
#17 0x00007fcebf36ff79 in QMetaObject::activate (sender=sender@entry=0xb0f9bb0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd85f09f90) at kernel/qobject.cpp:3771
#18 0x00007fcebf370887 in QMetaObject::activate (sender=sender@entry=0xb0f9bb0, m=m@entry=0x7fcec07f67a0 <QMdiArea::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd85f09f90) at kernel/qobject.cpp:3633
#19 0x00007fcec0267a4f in QMdiArea::subWindowActivated (this=this@entry=0xb0f9bb0, _t1=0x7fcc8a1a7bf0) at .moc/moc_qmdiarea.cpp:308
#20 0x00007fcec026e3d0 in QMdiAreaPrivate::emitWindowActivated (this=this@entry=0xab68aa0, activeWindow=activeWindow@entry=0x7fcc8a1a7bf0) at widgets/qmdiarea.cpp:1092
#21 0x00007fcec026e57b in QMdiAreaPrivate::_q_processWindowStateChanged (this=0xab68aa0, oldState=..., newState=...) at widgets/qmdiarea.cpp:760
#22 0x00007fcec026e835 in QMdiArea::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qmdiarea.cpp:183
#23 0x00007fcebf36ff79 in QMetaObject::activate (sender=sender@entry=0x7fcc8a1a7bf0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd85f0a1c0) at kernel/qobject.cpp:3771
#24 0x00007fcebf370887 in QMetaObject::activate (sender=sender@entry=0x7fcc8a1a7bf0, m=m@entry=0x7fcec07f7380 <QMdiSubWindow::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd85f0a1c0) at kernel/qobject.cpp:3633
#25 0x00007fcec0273136 in QMdiSubWindow::windowStateChanged (this=this@entry=0x7fcc8a1a7bf0, _t1=..., _t2=...) at .moc/moc_qmdisubwindow.cpp:228
#26 0x00007fcec027b672 in QMdiSubWindowPrivate::setActive (this=0x7fcc8a1a7dc0, activate=<optimized out>, changeFocus=<optimized out>) at widgets/qmdisubwindow.cpp:1447
#27 0x00007fcec026e84f in QMdiArea::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qmdiarea.cpp:184
#28 0x00007fcebf36ff79 in QMetaObject::activate (sender=sender@entry=0xcedb4d0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd85f0a3c0) at kernel/qobject.cpp:3771
#29 0x00007fcebf370887 in QMetaObject::activate (sender=sender@entry=0xcedb4d0, m=m@entry=0x7fcec07fbea0 <QTabBar::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd85f0a3c0) at kernel/qobject.cpp:3633
#30 0x00007fcec02b530e in QTabBar::currentChanged (this=this@entry=0xcedb4d0, _t1=_t1@entry=1) at .moc/moc_qtabbar.cpp:333
#31 0x00007fcec02b9845 in QTabBar::setCurrentIndex (this=this@entry=0xcedb4d0, index=1) at widgets/qtabbar.cpp:1366
#32 0x00007fcec02bbf80 in QTabBar::mousePressEvent (this=this@entry=0xcedb4d0, event=event@entry=0x7ffd85f0aa70) at widgets/qtabbar.cpp:1969
#33 0x00007fcec026fb97 in QMdiAreaTabBar::mousePressEvent (this=0xcedb4d0, event=0x7ffd85f0aa70) at widgets/qmdiarea.cpp:588
#34 0x00007fcec015003f in QWidget::event (this=this@entry=0xcedb4d0, event=event@entry=0x7ffd85f0aa70) at kernel/qwidget.cpp:8897
#35 0x00007fcec02ba3db in QTabBar::event (this=0xcedb4d0, event=0x7ffd85f0aa70) at widgets/qtabbar.cpp:1691
#36 0x00007fcec011039c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0xcedb4d0, e=0x7ffd85f0aa70) at kernel/qapplication.cpp:3727
#37 0x00007fcec0117db3 in QApplication::notify (this=<optimized out>, receiver=receiver@entry=0xcedb4d0, e=e@entry=0x7ffd85f0aa70) at kernel/qapplication.cpp:3203
#38 0x00007fcec19ea4b7 in KisApplication::notify (this=<optimized out>, receiver=0xcedb4d0, event=0x7ffd85f0aa70) at /workspace/build/libs/ui/KisApplication.cpp:626
#39 0x00007fcebf343228 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0xcedb4d0, event=event@entry=0x7ffd85f0aa70) at kernel/qcoreapplication.cpp:1048
#40 0x00007fcec0116faf in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#41 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0xcedb4d0, event=event@entry=0x7ffd85f0aa70, alienWidget=alienWidget@entry=0xcedb4d0, nativeWidget=0xb127fa0, buttonDown=buttonDown@entry=0x7fcec08198d0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2695
#42 0x00007fcec0169abd in QWidgetWindow::handleMouseEvent (this=this@entry=0xab73a50, event=event@entry=0x7ffd85f0aef0) at kernel/qwidgetwindow.cpp:659
#43 0x00007fcec016c4cb in QWidgetWindow::event (this=0xab73a50, event=0x7ffd85f0aef0) at kernel/qwidgetwindow.cpp:280
#44 0x00007fcec011039c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0xab73a50, e=0x7ffd85f0aef0) at kernel/qapplication.cpp:3727
#45 0x00007fcec0117ab0 in QApplication::notify (this=0x7ffd85f0b850, receiver=receiver@entry=0xab73a50, e=e@entry=0x7ffd85f0aef0) at kernel/qapplication.cpp:3486
#46 0x00007fcec19ea4b7 in KisApplication::notify (this=<optimized out>, receiver=0xab73a50, event=0x7ffd85f0aef0) at /workspace/build/libs/ui/KisApplication.cpp:626
#47 0x00007fcebf343228 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0xab73a50, event=event@entry=0x7ffd85f0aef0) at kernel/qcoreapplication.cpp:1048
#48 0x00007fcebf9053cf in QCoreApplication::sendSpontaneousEvent (event=0x7ffd85f0aef0, receiver=0xab73a50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
#49 QGuiApplicationPrivate::processMouseEvent (e=0x3349fd70) at kernel/qguiapplication.cpp:2082
#50 0x00007fcebf907415 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x3349fd70) at kernel/qguiapplication.cpp:1817
#51 0x00007fcebf8e1e1b in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:1032
#52 0x00007fcea8b1f9ab in QPAEventDispatcherGlib::processEvents (this=0x229fec0, flags=...) at qeventdispatcher_glib.cpp:70
#53 0x00007fcebf3415ba in QEventLoop::exec (this=this@entry=0x7ffd85f0b160, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#54 0x00007fcebf34a6c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#55 0x00007fcebf8fbf8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1762
#56 0x00007fcec01102f5 in QApplication::exec () at kernel/qapplication.cpp:2901
#57 0x0000000000406757 in main (argc=2, argv=0x7ffd85f0b9b8) at /workspace/build/krita/main.cc:438

Possible duplicates by query: bug 366243.

Reported using DrKonqi