Application: konsole (15.08.0)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-34-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
Opened Konsole.  Did "tmux -2 attach".  Typed a command and pressed enter.  Crashed as soon as "enter" pressed.

This happens maybe 10% of the time.  Always on the first "enter" after attaching tmux.

On a side note, Konsole crashes every time I close my laptop lid because of QTBUG-42985.  That's why I have to restart and "tmux -2 attach" so often.

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 0x7fb6e3be7840 (LWP 2319))]

Thread 2 (Thread 0x7fb6cfc3f700 (LWP 2320)):
#0  0x00007fb6e36c188d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fb6dc240bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb6dc24274f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb6d1b66a39 in QXcbEventReader::run (this=0x235bc70) at qxcbconnection.cpp:1105
#4  0x00007fb6e00d02be in QThreadPrivate::start (arg=0x235bc70) at thread/qthread_unix.cpp:337
#5  0x00007fb6dbc146aa in start_thread (arg=0x7fb6cfc3f700) at pthread_create.c:333
#6  0x00007fb6e36cce9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb6e3be7840 (LWP 2319)):
[KCrash Handler]
#6  QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::data (this=0x8) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
#7  qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:962
#8  QWidget::d_func (this=0x0) at ../../include/QtWidgets/../../src/widgets/kernel/qwidget.h:121
#9  QWidgetBackingStore::markDirtyOnScreen (this=0x23997c0, region=..., widget=0x2606b70, topLevelOffset=...) at kernel/qwidgetbackingstore.cpp:688
#10 0x00007fb6e0b8dd47 in QWidgetPrivate::scrollRect (this=this@entry=0x25bd3d0, rect=..., dx=dx@entry=0, dy=dy@entry=-14) at kernel/qwidgetbackingstore.cpp:918
#11 0x00007fb6e0bab34e in QWidgetPrivate::scroll_sys (this=this@entry=0x25bd3d0, dx=dx@entry=0, dy=dy@entry=-14, r=...) at kernel/qwidget.cpp:10675
#12 0x00007fb6e0bab792 in QWidget::scroll (this=0x2606b70, dx=0, dy=-14, r=...) at kernel/qwidget.cpp:10670
#13 0x00007fb6e3351c35 in Konsole::TerminalDisplay::scrollImage(int, QRect const&) () from /usr/lib/x86_64-linux-gnu/libkonsoleprivate.so.15
#14 0x00007fb6e3359c0a in Konsole::TerminalDisplay::updateImage() () from /usr/lib/x86_64-linux-gnu/libkonsoleprivate.so.15
#15 0x00007fb6e02e0617 in QtPrivate::QSlotObjectBase::call (a=0x7fffcef301f0, r=0x2606b70, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#16 QMetaObject::activate (sender=0x261efb0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3702
#17 0x00007fb6e02e0617 in QtPrivate::QSlotObjectBase::call (a=0x7fffcef302f0, r=0x261efb0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#18 QMetaObject::activate (sender=0x251e0e0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3702
#19 0x00007fb6e32f126e in Konsole::Emulation::showBulk() () from /usr/lib/x86_64-linux-gnu/libkonsoleprivate.so.15
#20 0x00007fb6e02e0617 in QtPrivate::QSlotObjectBase::call (a=0x7fffcef30400, r=0x251e0e0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#21 QMetaObject::activate (sender=sender@entry=0x251e130, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3702
#22 0x00007fb6e02e0f87 in QMetaObject::activate (sender=sender@entry=0x251e130, m=m@entry=0x7fb6e04e37c0 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3582
#23 0x00007fb6e0359b10 in QTimer::timeout (this=this@entry=0x251e130) at .moc/moc_qtimer.cpp:192
#24 0x00007fb6e02ed178 in QTimer::timerEvent (this=0x251e130, e=<optimized out>) at kernel/qtimer.cpp:247
#25 0x00007fb6e02e1603 in QObject::event (this=0x251e130, e=<optimized out>) at kernel/qobject.cpp:1267
#26 0x00007fb6e0b7db8c in QApplicationPrivate::notify_helper (this=this@entry=0x234d3f0, receiver=receiver@entry=0x251e130, e=e@entry=0x7fffcef30730) at kernel/qapplication.cpp:3720
#27 0x00007fb6e0b83230 in QApplication::notify (this=0x7fffcef30ab0, receiver=0x251e130, e=0x7fffcef30730) at kernel/qapplication.cpp:3503
#28 0x00007fb6e02aff1b in QCoreApplication::notifyInternal (this=0x7fffcef30ab0, receiver=0x251e130, event=event@entry=0x7fffcef30730) at kernel/qcoreapplication.cpp:935
#29 0x00007fb6e030609d in QCoreApplication::sendEvent (event=0x7fffcef30730, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#30 QTimerInfoList::activateTimers (this=0x2378ef0) at kernel/qtimerinfo_unix.cpp:635
#31 0x00007fb6e03065a1 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#32 0x00007fb6db4ddff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fb6db4de250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fb6db4de2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fb6e030727f in QEventDispatcherGlib::processEvents (this=0x237cab0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#36 0x00007fb6e02ad75a in QEventLoop::exec (this=this@entry=0x7fffcef30970, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#37 0x00007fb6e02b52cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#38 0x00007fb6e39b1bdb in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konsole.so
#39 0x00007fb6e35e6a40 in __libc_start_main (main=0x400730 <main>, argc=1, argv=0x7fffcef30bf8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcef30be8) at libc-start.c:289
#40 0x0000000000400769 in _start ()

Reported using DrKonqi