Bug 397266

Application: kate (18.11.70)

Qt Version: 5.11.1
Frameworks Version: 5.49.0
Operating System: Linux 4.15.0-29-generic x86_64
Distribution: KDE neon Developer Edition

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

Was using Kate with multiple tabs opened, upon activity in the editor - switching tabs AFAIR - Kate crashed

-- Backtrace:
Application: Kate (kate), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2c91589900 (LWP 2455))]

Thread 2 (Thread 0x7f2c767ec700 (LWP 2458)):
#0  0x00007f2c8bc0874d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2c85e5138c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2c85e5149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2c8c8290bb in QEventDispatcherGlib::processEvents (this=0x7f2c700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f2c8c7d05ba in QEventLoop::exec (this=this@entry=0x7f2c767ebc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f2c8c6055e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f2c8cc70f35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f2c8c610727 in QThreadPrivate::start (arg=0x7f2c8cee9d60) at thread/qthread_unix.cpp:367
#8  0x00007f2c87aa06ba in start_thread (arg=0x7f2c767ec700) at pthread_create.c:333
#9  0x00007f2c8bc1441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2c91589900 (LWP 2455)):
[KCrash Handler]
#6  0x00007f2c8bed1db8 in main_arena () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007f2c8d4fd5fc in QWindowPrivate::setVisible (this=0x2a569e0, visible=visible@entry=false) at kernel/qwindow.cpp:401
#8  0x00007f2c8dd540bd in QWidgetWindow::setNativeWindowVisibility (this=this@entry=0x2a5e060, visible=visible@entry=false) at kernel/qwidgetwindow.cpp:205
#9  0x00007f2c8dd2ed3a in QWidgetPrivate::hide_sys (this=this@entry=0x2afc080) at kernel/qwidget.cpp:8240
#10 0x00007f2c8dd3662d in QWidgetPrivate::hide_helper (this=this@entry=0x2afc080) at kernel/qwidget.cpp:8168
#11 0x00007f2c8dd3b428 in QWidget::setVisible (this=0x2518b40, visible=<optimized out>) at kernel/qwidget.cpp:8370
#12 0x00007f2c8dd369c8 in QWidgetPrivate::close_helper (this=0x2afc080, mode=QWidgetPrivate::CloseNoEvent) at kernel/qwidget.cpp:8499
#13 0x00007f2c8dd36f70 in QWidget::~QWidget (this=0x2518b40, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1635
#14 0x00007f2c9106f0f1 in KateTextPreview::~KateTextPreview (this=0x2518b40, __in_chrg=<optimized out>) at /workspace/build/src/view/katetextpreview.cpp:43
#15 KateTextPreview::~KateTextPreview (this=0x2518b40, __in_chrg=<optimized out>) at /workspace/build/src/view/katetextpreview.cpp:45
#16 0x00007f2c9105fb58 in KateScrollBar::showTextPreview (this=0x26df290) at /workspace/build/src/view/kateviewhelpers.cpp:455
#17 0x00007f2c9106be48 in KateScrollBar::mouseMoveEvent (this=0x26df290, e=<optimized out>) at /workspace/build/src/view/kateviewhelpers.cpp:352
#18 0x00007f2c8dd3b778 in QWidget::event (this=this@entry=0x26df290, event=event@entry=0x7fffbf171450) at kernel/qwidget.cpp:9281
#19 0x00007f2c8ddeb245 in QAbstractSlider::event (this=this@entry=0x26df290, e=e@entry=0x7fffbf171450) at widgets/qabstractslider.cpp:956
#20 0x00007f2c8de8cd2b in QScrollBar::event (this=0x26df290, event=0x7fffbf171450) at widgets/qscrollbar.cpp:490
#21 0x00007f2c8dcfc39c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x26df290, e=0x7fffbf171450) at kernel/qapplication.cpp:3727
#22 0x00007f2c8dd03db3 in QApplication::notify (this=<optimized out>, receiver=0x26df290, e=0x7fffbf171450) at kernel/qapplication.cpp:3203
#23 0x00007f2c8c7d2228 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x26df290, event=event@entry=0x7fffbf171450) at kernel/qcoreapplication.cpp:1048
#24 0x00007f2c8dd02faf in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#25 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x26df290, event=event@entry=0x7fffbf171450, alienWidget=alienWidget@entry=0x26df290, nativeWidget=0x236d120, buttonDown=buttonDown@entry=0x7f2c8e4058d0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2695
#26 0x00007f2c8dd55abd in QWidgetWindow::handleMouseEvent (this=this@entry=0x286c310, event=event@entry=0x7fffbf171850) at kernel/qwidgetwindow.cpp:659
#27 0x00007f2c8dd584cb in QWidgetWindow::event (this=0x286c310, event=0x7fffbf171850) at kernel/qwidgetwindow.cpp:280
#28 0x00007f2c8dcfc39c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x286c310, e=0x7fffbf171850) at kernel/qapplication.cpp:3727
#29 0x00007f2c8dd03ab0 in QApplication::notify (this=0x7fffbf171d90, receiver=0x286c310, e=0x7fffbf171850) at kernel/qapplication.cpp:3486
#30 0x00007f2c8c7d2228 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x286c310, event=event@entry=0x7fffbf171850) at kernel/qcoreapplication.cpp:1048
#31 0x00007f2c8d4f13cf in QCoreApplication::sendSpontaneousEvent (event=0x7fffbf171850, receiver=0x286c310) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
#32 QGuiApplicationPrivate::processMouseEvent (e=0x2b14430) at kernel/qguiapplication.cpp:2082
#33 0x00007f2c8d4f3415 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x2b14430) at kernel/qguiapplication.cpp:1817
#34 0x00007f2c8d4cde1b in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:1032
#35 0x00007f2c7c09342b in QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#36 0x00007f2c8c7d05ba in QEventLoop::exec (this=this@entry=0x7fffbf171ac0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#37 0x00007f2c8c7d96c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#38 0x00007f2c8d4e7f8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1762
#39 0x00007f2c8dcfc2f5 in QApplication::exec () at kernel/qapplication.cpp:2901
#40 0x000000000042a0bd in main (argc=3, argv=<optimized out>) at /workspace/build/kate/main.cpp:595

Reported using DrKonqi