Application: krita (3.0.1)

Qt Version: 5.7.0
Frameworks Version: 5.29.0
Operating System: Linux 4.4.0-53-generic x86_64
Distribution: KDE neon User Edition 5.8

-- Information about the crash:
- What I was doing when the application crashed:
Attempting to create a guide by clicking and dragging from ruler. Crashes also sometimes when moving a guide.

Seems to mostly happen if guide is pulled from a region of the ruler that covers an area within which I have drawn.

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 0x7fd182bbf8c0 (LWP 23481))]

Thread 6 (Thread 0x7fd14d227700 (LWP 23529)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd180a73a4b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fd18175741a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#3  0x00007fd180a72b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd17af466ba in start_thread (arg=0x7fd14d227700) at pthread_create.c:333
#5  0x00007fd18016982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fd14de29700 (LWP 23514)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd180a73a4b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fd180a6cea6 in QSemaphore::tryAcquire(int, int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fd17e5c460a in KisTileDataSwapper::run() () from /usr/lib/x86_64-linux-gnu/libkritaimage.so.15
#4  0x00007fd180a72b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd17af466ba in start_thread (arg=0x7fd14de29700) at pthread_create.c:333
#6  0x00007fd18016982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fd14e62a700 (LWP 23513)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd180a73a4b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fd180a6cbfb in QSemaphore::acquire(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fd17e5aae4e in ?? () from /usr/lib/x86_64-linux-gnu/libkritaimage.so.15
#4  0x00007fd17e5ab60a in ?? () from /usr/lib/x86_64-linux-gnu/libkritaimage.so.15
#5  0x00007fd180a72b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd17af466ba in start_thread (arg=0x7fd14e62a700) at pthread_create.c:333
#7  0x00007fd18016982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fd163f0c700 (LWP 23483)):
#0  0x00007fd18015db5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd17991139c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd1799114ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd180c9e23b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd180c48cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd180a6dfb4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd182c4c7a5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fd180a72b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fd17af466ba in start_thread (arg=0x7fd163f0c700) at pthread_create.c:333
#9  0x00007fd18016982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fd170c64700 (LWP 23482)):
#0  0x00007fd18015db5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd17ea67c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd17ea698d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd1733b4a39 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fd180a72b98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd17af466ba in start_thread (arg=0x7fd170c64700) at pthread_create.c:333
#6  0x00007fd18016982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fd182bbf8c0 (LWP 23481)):
[KCrash Handler]
#6  0x00007fd17cd0bf95 in KUndo2Command::timedMergeWith(KUndo2Command*) () from /usr/lib/x86_64-linux-gnu/libkritaundo2.so.15
#7  0x00007fd17cd0cd72 in KUndo2QStack::push(KUndo2Command*) () from /usr/lib/x86_64-linux-gnu/libkritaundo2.so.15
#8  0x00007fd1823ec426 in KisGuidesManager::setGuidesConfigImpl(KisGuidesConfig const&, bool) () from /usr/lib/x86_64-linux-gnu/libkritaui.so.15
#9  0x00007fd1823ede70 in KisGuidesManager::Private::mouseMoveHandler(QPointF const&, QFlags<Qt::KeyboardModifier>) () from /usr/lib/x86_64-linux-gnu/libkritaui.so.15
#10 0x00007fd1823edfba in KisGuidesManager::slotGuideCreationInProgress(Qt::Orientation, QPoint const&) () from /usr/lib/x86_64-linux-gnu/libkritaui.so.15
#11 0x00007fd180c75b09 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fd17e265586 in KoRuler::guideCreationInProgress(Qt::Orientation, QPoint const&) () from /usr/lib/x86_64-linux-gnu/libkritawidgets.so.15
#13 0x00007fd17e22ea33 in KoRuler::mouseMoveEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libkritawidgets.so.15
#14 0x00007fd18157d398 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fd18153689c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fd18153eb35 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fd18269ac17 in KisApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libkritaui.so.15
#18 0x00007fd180c4acf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fd18153d85f in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fd181597090 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fd181599863 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fd18153689c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fd18153e296 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fd18269ac17 in KisApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libkritaui.so.15
#25 0x00007fd180c4acf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fd180f9c0a0 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#27 0x00007fd180f9dfa5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#28 0x00007fd180f7be6b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#29 0x00007fd1733ea710 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#30 0x00007fd1799111a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fd179911400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fd1799114ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fd180c9e21f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007fd180c48cea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fd180c512fc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x0000000000404ca1 in main ()

Possible duplicates by query: bug 368992, bug 368664.

Reported using DrKonqi