Bug 372065

Application: konsole (16.08.2)

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.4.0-45-generic x86_64
Distribution: KDE neon User Edition 5.8

-- Information about the crash:
Happens regardless of whether the window is focused or not.
Has been happening after konsole got a set of new features some months back (one concrete change I remember that might help determining the point in time is that I noticed the slide-from-the-left animation in the theme selection dialog in the preferences was gone)

Running KDE neon, all packages updated.
I have not been able to pinpoint any common denominator for the crashes, it seems completely random.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Konsole (konsole), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2da16e28c0 (LWP 2323))]

Thread 3 (Thread 0x7f2d97fff700 (LWP 2350)):
#0  0x00007f2db0812b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2da7e0939c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2da7e094ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2dad41b30b in QEventDispatcherGlib::processEvents (this=0x7f2d900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f2dad3c5d9a in QEventLoop::exec (this=this@entry=0x7f2d97ffecd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007f2dad1eb044 in QThread::exec (this=this@entry=0x7f2db0e8dd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:507
#6  0x00007f2db0e197a5 in QDBusConnectionManager::run (this=0x7f2db0e8dd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:196
#7  0x00007f2dad1efc28 in QThreadPrivate::start (arg=0x7f2db0e8dd60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:344
#8  0x00007f2da9a8170a in start_thread (arg=0x7f2d97fff700) at pthread_create.c:333
#9  0x00007f2db081e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2d9e4ba700 (LWP 2336)):
#0  0x00007f2db0812b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2da9ea3c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2da9ea58d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2da1043a39 in QXcbEventReader::run (this=0x1b06b90) at qxcbconnection.cpp:1337
#4  0x00007f2dad1efc28 in QThreadPrivate::start (arg=0x1b06b90) at thread/qthread_unix.cpp:344
#5  0x00007f2da9a8170a in start_thread (arg=0x7f2d9e4ba700) at pthread_create.c:333
#6  0x00007f2db081e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2da16e28c0 (LWP 2323)):
[KCrash Handler]
#6  0x00007f2dad3fb680 in QtPrivate::QSlotObjectBase::compare (a=0x7ffe630a6310, this=0x234f401) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:129
#7  QMetaObjectPrivate::disconnectHelper (c=0x3bbe6e0, receiver=0x1fb2af0, method_index=<optimized out>, slot=<optimized out>, senderMutex=0x7f2dad618450 <_q_ObjectMutexPool+48>, disconnectType=QMetaObjectPrivate::DisconnectAll) at kernel/qobject.cpp:3340
#8  0x00007f2dad3f4da7 in QMetaObjectPrivate::disconnect (sender=0x1fb2560, signal_index=7, smeta=0x7f2dae41e780 <QAbstractSlider::staticMetaObject>, receiver=0x1fb2af0, method_index=-1, slot=0x7ffe630a6310, disconnectType=QMetaObjectPrivate::DisconnectAll) at kernel/qobject.cpp:3414
#9  0x00007f2dad3f5477 in QObject::disconnectImpl (sender=0x1fb2560, signal=<optimized out>, receiver=0x1fb2af0, slot=0x7ffe630a6310, senderMetaObject=0x7f2dae41e780 <QAbstractSlider::staticMetaObject>) at kernel/qobject.cpp:4869
#10 0x00007f2db04a36b7 in Konsole::TerminalDisplay::setScroll(int, int) () from /usr/lib/x86_64-linux-gnu/libkonsoleprivate.so.16
#11 0x00007f2db04a9050 in Konsole::TerminalDisplay::updateImage() () from /usr/lib/x86_64-linux-gnu/libkonsoleprivate.so.16
#12 0x00007f2dad3f2f36 in QtPrivate::QSlotObjectBase::call (a=0x7ffe630a6560, r=0x1fb2af0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:130
#13 QMetaObject::activate (sender=0x2a47b20, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3723
#14 0x00007f2dad3f2f36 in QtPrivate::QSlotObjectBase::call (a=0x7ffe630a6670, r=0x2a47b20, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:130
#15 QMetaObject::activate (sender=0x2c71c30, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3723
#16 0x00007f2db044989e in Konsole::Emulation::showBulk() () from /usr/lib/x86_64-linux-gnu/libkonsoleprivate.so.16
#17 0x00007f2dad3f2f36 in QtPrivate::QSlotObjectBase::call (a=0x7ffe630a6790, r=0x2c71c30, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:130
#18 QMetaObject::activate (sender=sender@entry=0x2c71c80, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3723
#19 0x00007f2dad3f3577 in QMetaObject::activate (sender=sender@entry=0x2c71c80, m=m@entry=0x7f2dad612720 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3602
#20 0x00007f2dad46b790 in QTimer::timeout (this=this@entry=0x2c71c80) at .moc/moc_qtimer.cpp:198
#21 0x00007f2dad3ff4e8 in QTimer::timerEvent (this=0x2c71c80, e=<optimized out>) at kernel/qtimer.cpp:254
#22 0x00007f2dad3f3a93 in QObject::event (this=0x2c71c80, e=<optimized out>) at kernel/qobject.cpp:1285
#23 0x00007f2dadf4689c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x2c71c80, e=0x7ffe630a6ab0) at kernel/qapplication.cpp:3799
#24 0x00007f2dadf4e296 in QApplication::notify (this=0x1ae92e0, receiver=0x2c71c80, e=0x7ffe630a6ab0) at kernel/qapplication.cpp:3556
#25 0x00007f2dad3c7da8 in QCoreApplication::notifyInternal2 (receiver=0x2c71c80, event=event@entry=0x7ffe630a6ab0) at kernel/qcoreapplication.cpp:988
#26 0x00007f2dad41a23e in QCoreApplication::sendEvent (event=0x7ffe630a6ab0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#27 QTimerInfoList::activateTimers (this=0x1b3cad0) at kernel/qtimerinfo_unix.cpp:644
#28 0x00007f2dad41a7a9 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:182
#29 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:229
#30 0x00007f2da7e091a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f2da7e09400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f2da7e094ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f2dad41b2ef in QEventDispatcherGlib::processEvents (this=0x1b44120, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#34 0x00007f2dad3c5d9a in QEventLoop::exec (this=this@entry=0x7ffe630a6d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#35 0x00007f2dad3ce3ac in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1261
#36 0x00007f2dad9a3dbc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1639
#37 0x00007f2dadf467f5 in QApplication::exec () at kernel/qapplication.cpp:2975
#38 0x00007f2db0b08bf5 in kdemain (argc=1, argv=<optimized out>) at /workspace/build/src/main.cpp:176
#39 0x00007f2db0738830 in __libc_start_main (main=0x4006b0 <main(int, char**)>, argc=3, argv=0x7ffe630a6fc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe630a6fb8) at ../csu/libc-start.c:291
#40 0x00000000004006e9 in _start ()

Reported using DrKonqi