Bug 393916 - Hangup on exit after layer duplication
Summary: Hangup on exit after layer duplication
Status: RESOLVED FIXED
Alias: None
Product: krita
Classification: Applications
Component: General (show other bugs)
Version: git master (please specify the git hash!)
Platform: Other Linux
: NOR crash
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords: release_blocker
Depends on:
Blocks:
 
Reported: 2018-05-06 17:41 UTC by Dmitry Kazakov
Modified: 2018-05-07 09:26 UTC (History)
2 users (show)

See Also:
Latest Commit: https://commits.kde.org/krita/249c53bcba947afbb17d21efc022b079b2706c95
Version Fixed In:

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Description Dmitry Kazakov 2018-05-06 17:41:11 UTC 
1) Create an empty image 
2) Paint something on a layer
3) Press Ctrl+J to duplicate this layer
4) Close Krita

[krita hangs up with the following backtrace]

(gdb) thread apply all bt

Thread 7 (Thread 0x7fffbec97700 (LWP 29730)):
#0  0x00007ffff4e18c9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fffef327fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffef3280ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff58d9ecc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#4  0x00007ffff588539b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#5  0x00007ffff56b7d4a in QThread::exec() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#6  0x00007fffd0872ea8 in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Qml.so.5
#7  0x00007ffff56bcbdf in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#8  0x00007fffefc72184 in start_thread (arg=0x7fffbec97700) at pthread_create.c:312
#9  0x00007ffff4e2603d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fffcf8da700 (LWP 29729)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff56b4556 in QBasicMutex::lockInternal() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#2  0x00007ffff56b4816 in QMutex::lock() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#3  0x00007ffff3198534 in QMutexLocker (m=0x9a1c800, this=<synthetic pointer>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qmutex.h:206
#4  KisStrokesQueue::sizeMetric (this=0x9a1c550) at /home/appimage/persistent/krita/libs/image/kis_strokes_queue.cpp:589
#5  0x00007ffff31a1697 in KisUpdateScheduler::processQueues (this=this@entry=0x9a2bdd8) at /home/appimage/persistent/krita/libs/image/kis_update_scheduler.cpp:406
#6  0x00007ffff31a1940 in KisUpdateScheduler::waitForDone (this=0x9a2bdd8) at /home/appimage/persistent/krita/libs/image/kis_update_scheduler.cpp:359
#7  0x00007ffff31b28ca in KisImage::waitForDone (this=this@entry=0x9a24190) at /home/appimage/persistent/krita/libs/image/kis_image.cc:1261
#8  0x00007ffff31b9001 in KisImage::~KisImage (this=0x9a24190, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_image.cc:263
#9  0x00007ffff31b9219 in KisImage::~KisImage (this=0x9a24190, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_image.cc:267
#10 0x00007ffff31b19f6 in deref (sp=<optimized out>, t=<optimized out>) at /home/appimage/persistent/krita/libs/global/kis_shared_ptr.h:214
#11 deref (this=0x9a1cd38) at /home/appimage/persistent/krita/libs/global/kis_shared_ptr.h:221
#12 ~KisSharedPtr (this=0x9a1cd38, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/global/kis_shared_ptr.h:109
#13 ~StopIsolatedModeStroke (this=0x9a1cce0, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_image.cc:1342
#14 KisImage::StopIsolatedModeStroke::~StopIsolatedModeStroke (this=0x9a1cce0, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_image.cc:1342
#15 0x00007ffff319a832 in execute (this=<optimized out>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qsharedpointer_impl.h:195
#16 QtSharedPointer::ExternalRefCountWithCustomDeleter<KisStroke, QtSharedPointer::NormalDeleter>::deleter (self=<optimized out>)
    at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qsharedpointer_impl.h:213
#17 0x00007ffff3198b09 in destroy (this=0x9a23f40) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qsharedpointer_impl.h:157
#18 deref (dd=0x9a23f40) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qsharedpointer_impl.h:461
#19 deref (this=<optimized out>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qsharedpointer_impl.h:456
#20 ~QSharedPointer (this=<synthetic pointer>, __in_chrg=<optimized out>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qsharedpointer_impl.h:313
#21 KisStrokesQueue::checkStrokeState (this=this@entry=0x9a1c550, hasStrokeJobsRunning=hasStrokeJobsRunning@entry=false, runningLevelOfDetail=runningLevelOfDetail@entry=-1)
    at /home/appimage/persistent/krita/libs/image/kis_strokes_queue.cpp:778
#22 0x00007ffff3198db6 in KisStrokesQueue::processOneJob (this=this@entry=0x9a1c550, updaterContext=..., externalJobsPending=externalJobsPending@entry=false)
    at /home/appimage/persistent/krita/libs/image/kis_strokes_queue.cpp:699
#23 0x00007ffff3198efe in KisStrokesQueue::processQueue (this=0x9a1c550, updaterContext=..., externalJobsPending=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_strokes_queue.cpp:560
#24 0x00007ffff31a16f0 in KisUpdateScheduler::processQueues (this=0x9a2bdd8) at /home/appimage/persistent/krita/libs/image/kis_update_scheduler.cpp:409
#25 0x00007ffff58b11df in QMetaObject::activate(QObject*, int, int, void**) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#26 0x00007ffff318fa10 in KisUpdaterContext::slotJobFinished (this=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_updater_context.cpp:252
#27 0x00007ffff58b11df in QMetaObject::activate(QObject*, int, int, void**) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#28 0x00007ffff32d9b74 in sigJobFinished (this=0x9a2a740) at /home/appimage/appimage-workspace/krita-build/libs/image/moc_kis_update_job_item.cpp:164
#29 KisUpdateJobItem::run (this=0x9a2a740) at /home/appimage/appimage-workspace/krita-build/libs/image/../../../../persistent/krita/libs/image/kis_update_job_item.h:99
#30 0x00007ffff56b9d72 in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#31 0x00007ffff56bcbdf in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#32 0x00007fffefc72184 in start_thread (arg=0x7fffcf8da700) at pthread_create.c:312
#33 0x00007ffff4e2603d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fffcf0d9700 (LWP 29728)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff56bdaab in QWaitCondition::wait(QMutex*, unsigned long) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#2  0x00007ffff56b6bc7 in QSemaphore::tryAcquire(int, int) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#3  0x00007ffff30c2e53 in KisTileDataSwapper::waitForWork (this=<optimized out>) at /home/appimage/persistent/krita/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:86
#4  0x00007ffff30c301a in KisTileDataSwapper::run (this=0x7ffff35a1060 <_ZZN12_GLOBAL__N_116Q_QGS_s_instance13innerFunctionEvE6holder+64>)
    at /home/appimage/persistent/krita/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:92
---Type <return> to continue, or q <return> to quit---
#5  0x00007ffff56bcbdf in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#6  0x00007fffefc72184 in start_thread (arg=0x7fffcf0d9700) at pthread_create.c:312
#7  0x00007ffff4e2603d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fffd00db700 (LWP 29725)):
#0  0x00007ffff4e18c9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fffef327fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fffef3280ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff58d9ecc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#4  0x00007ffff588539b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#5  0x00007ffff56b7d4a in QThread::exec() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#6  0x00007fffefe9d615 in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5DBus.so.5
#7  0x00007ffff56bcbdf in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#8  0x00007fffefc72184 in start_thread (arg=0x7fffd00db700) at pthread_create.c:312
#9  0x00007ffff4e2603d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fffe89c6700 (LWP 29724)):
#0  0x00007ffff4e18c9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff37feb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ffff380064f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fffe9722859 in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5XcbQpa.so.5
#4  0x00007ffff56bcbdf in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#5  0x00007fffefc72184 in start_thread (arg=0x7fffe89c6700) at pthread_create.c:312
#6  0x00007ffff4e2603d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fffe9a63780 (LWP 29720)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff56b4556 in QBasicMutex::lockInternal() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#2  0x00007ffff56b4816 in QMutex::lock() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#3  0x00007ffff3198534 in QMutexLocker (m=0x9a1c800, this=<synthetic pointer>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qmutex.h:206
#4  KisStrokesQueue::sizeMetric (this=0x9a1c550) at /home/appimage/persistent/krita/libs/image/kis_strokes_queue.cpp:589
#5  0x00007ffff31a1697 in KisUpdateScheduler::processQueues (this=this@entry=0x9a2bdd8) at /home/appimage/persistent/krita/libs/image/kis_update_scheduler.cpp:406
#6  0x00007ffff31a1940 in KisUpdateScheduler::waitForDone (this=0x9a2bdd8) at /home/appimage/persistent/krita/libs/image/kis_update_scheduler.cpp:359
#7  0x00007ffff31b28ca in KisImage::waitForDone (this=this@entry=0x9a24190) at /home/appimage/persistent/krita/libs/image/kis_image.cc:1261
#8  0x00007ffff31b9001 in KisImage::~KisImage (this=0x9a24190, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_image.cc:263
#9  0x00007ffff31b9219 in KisImage::~KisImage (this=0x9a24190, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/image/kis_image.cc:267
#10 0x00007ffff7731609 in deref (sp=<optimized out>, t=<optimized out>) at /home/appimage/persistent/krita/libs/global/kis_shared_ptr.h:214
#11 deref (this=0x95b0e60) at /home/appimage/persistent/krita/libs/global/kis_shared_ptr.h:221
#12 ~KisSharedPtr (this=0x95b0e60, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/global/kis_shared_ptr.h:109
#13 KisPresetLivePreviewView::~KisPresetLivePreviewView (this=0x95b0e30, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/widgets/kis_preset_live_preview_view.cpp:33
#14 0x00007ffff7731649 in KisPresetLivePreviewView::~KisPresetLivePreviewView (this=0x95b0e30, __in_chrg=<optimized out>)
    at /home/appimage/persistent/krita/libs/ui/widgets/kis_preset_live_preview_view.cpp:37
#15 0x00007ffff58af4c5 in QObjectPrivate::deleteChildren() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#16 0x00007ffff6305412 in QWidget::~QWidget() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#17 0x00007ffff76fbdc9 in KisPaintOpPresetsPopup::~KisPaintOpPresetsPopup (this=0x958e450, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/widgets/kis_paintop_presets_popup.cpp:451
#18 0x00007ffff58af4c5 in QObjectPrivate::deleteChildren() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#19 0x00007ffff6305412 in QWidget::~QWidget() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#20 0x00007ffff63ac599 in QFrame::~QFrame() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#21 0x00007ffff770d835 in cleanup (pointer=<optimized out>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qscopedpointer.h:60
#22 ~QScopedPointer (this=0x3ac4580, __in_chrg=<optimized out>) at /home/appimage/appimage-workspace/deps/usr/include/QtCore/qscopedpointer.h:107
#23 ~Private (this=0x3ac4580, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/widgets/kis_popup_button.cc:36
#24 KisPopupButton::~KisPopupButton (this=0x3be3b30, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/widgets/kis_popup_button.cc:55
#25 0x00007ffff78ae36b in ~KisIconWidget (this=0x3be3b30, __in_chrg=<optimized out>)
    at /home/appimage/appimage-workspace/krita-build/libs/ui/../../../../persistent/krita/libs/ui/widgets/kis_iconwidget.h:32
#26 KisIconWidget::~KisIconWidget (this=0x3be3b30, __in_chrg=<optimized out>) at /home/appimage/appimage-workspace/krita-build/libs/ui/../../../../persistent/krita/libs/ui/widgets/kis_iconwidget.h:32
#27 0x00007ffff58af4c5 in QObjectPrivate::deleteChildren() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#28 0x00007ffff6305412 in QWidget::~QWidget() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#29 0x00007ffff6305629 in QWidget::~QWidget() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#30 0x00007ffff58af4c5 in QObjectPrivate::deleteChildren() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
---Type <return> to continue, or q <return> to quit---
#31 0x00007ffff6305412 in QWidget::~QWidget() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#32 0x00007ffff75eb7a1 in KisPaintopBox::~KisPaintopBox (this=0x94f39a0, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/kis_paintop_box.cc:520
#33 0x00007ffff75eb909 in KisPaintopBox::~KisPaintopBox (this=0x94f39a0, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/kis_paintop_box.cc:542
#34 0x00007ffff630ceec in QWidgetAction::~QWidgetAction() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#35 0x00007ffff630cf19 in QWidgetAction::~QWidgetAction() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#36 0x00007ffff58af4c5 in QObjectPrivate::deleteChildren() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#37 0x00007ffff58b97ee in QObject::~QObject() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#38 0x00007ffff7823390 in ~KisControlFrame (this=0x8dfa100, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/kis_control_frame.h:53
#39 ~KisViewManagerPrivate (this=0x8df9e70, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/KisViewManager.cpp:154
#40 KisViewManager::~KisViewManager (this=0x32354c0, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/KisViewManager.cpp:336
#41 0x00007ffff78235a9 in KisViewManager::~KisViewManager (this=0x32354c0, __in_chrg=<optimized out>) at /home/appimage/persistent/krita/libs/ui/KisViewManager.cpp:337
#42 0x00007ffff77f0cc8 in KisMainWindow::~KisMainWindow (this=0x3187230, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /home/appimage/persistent/krita/libs/ui/KisMainWindow.cpp:529
#43 0x00007ffff77f0ef9 in KisMainWindow::~KisMainWindow (this=0x3187230, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /home/appimage/persistent/krita/libs/ui/KisMainWindow.cpp:532
#44 0x00007ffff58b2b70 in QObject::event(QEvent*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#45 0x00007ffff6309ff3 in QWidget::event(QEvent*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#46 0x00007ffff64175f1 in QMainWindow::event(QEvent*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#47 0x00007ffff6d06917 in KMainWindow::event (this=this@entry=0x3187230, ev=ev@entry=0x94ddad0) at /home/appimage/persistent/krita/libs/widgetutils/xmlgui/kmainwindow.cpp:780
#48 0x00007ffff6d37899 in KXmlGuiWindow::event (this=0x3187230, ev=0x94ddad0) at /home/appimage/persistent/krita/libs/widgetutils/xmlgui/kxmlguiwindow.cpp:125
#49 0x00007ffff62ce27c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#50 0x00007ffff62d4fa0 in QApplication::notify(QObject*, QEvent*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Widgets.so.5
#51 0x00007ffff77bdd07 in KisApplication::notify (this=<optimized out>, receiver=0x3187230, event=0x94ddad0) at /home/appimage/persistent/krita/libs/ui/KisApplication.cpp:652
#52 0x00007ffff5886e05 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#53 0x00007ffff5889823 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#54 0x00007ffff58da6a3 in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#55 0x00007fffef327e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007fffef328048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007fffef3280ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007ffff58d9ecc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#59 0x00007fffe97af301 in ?? () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5XcbQpa.so.5
#60 0x00007ffff588539b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#61 0x00007ffff588dc14 in QCoreApplication::exec() () from /home/appimage/appimage-workspace/deps/usr/lib/libQt5Core.so.5
#62 0x00000000004052af in main (argc=1, argv=<optimized out>) at /home/appimage/persistent/krita/krita/main.cc:379
Comment 1 Halla Rempt 2018-05-06 17:45:51 UTC 
I guess you'll be looking into this?
Comment 2 mvowada 2018-05-06 19:30:31 UTC 
Hi Dmitry, I've checked several times and for some reason here, with "Krita 4.1.0-pre-alpha (git dac4dc7) appimage" on "Ubuntu 14.04 LTS Unity", the crash does *not* happen. My steps:

    1) start Krita
    2) CTRL+N (RGB 8-bit 300 ppi, default layers)
    3) paint
    4) CTRL+J
    5) CTRL+Q

Hope it helps.
Comment 3 Halla Rempt 2018-05-07 07:59:47 UTC 
I get the hang with master, not with a build from the 4.0 branch and also not with last night's appimage (https://bugs.kde.org/show_bug.cgi?id=393508)
Comment 5 Dmitry Kazakov 2018-05-07 09:24:59 UTC 
Git commit a32ca9d9f9cfca7f93d52ded79b868ff7bf0e2c8 by Dmitry Kazakov.
Committed on 07/05/2018 at 09:24.
Pushed by dkazakov into branch 'master'.

Fix a hangup when closing the image

Sometimes KisImage::stopIsolatedMode() is called from within the
context of the stroke, therefore we cannot start another nested
stroke.

M  +7    -3    libs/image/kis_image.cc
M  +9    -1    libs/image/kis_image.h

https://commits.kde.org/krita/a32ca9d9f9cfca7f93d52ded79b868ff7bf0e2c8
Comment 6 Dmitry Kazakov 2018-05-07 09:26:24 UTC 
Git commit 249c53bcba947afbb17d21efc022b079b2706c95 by Dmitry Kazakov.
Committed on 07/05/2018 at 09:26.
Pushed by dkazakov into branch 'krita/4.0'.

Fix a hangup when closing the image

Sometimes KisImage::stopIsolatedMode() is called from within the
context of the stroke, therefore we cannot start another nested
stroke.

M  +7    -3    libs/image/kis_image.cc
M  +9    -1    libs/image/kis_image.h

https://commits.kde.org/krita/249c53bcba947afbb17d21efc022b079b2706c95