Bug 369113

Application: kalarm (2.11.4-5ak)

Qt Version: 5.5.1
Frameworks Version: 5.23.0
Operating System: Linux 4.4.0-36-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I received a display alarm and I pressed "edit" to modify it.

-- Backtrace:
Application: KAlarm (kalarm), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f432b427940 (LWP 11941))]

Thread 3 (Thread 0x7f4322b75700 (LWP 11946)):
#0  0x00007f433cbbbac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f433cb76939 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f433cb772cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f433cb774ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f43433a1a9b in QEventDispatcherGlib::processEvents (this=0x7f43140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f4343348dea in QEventLoop::exec (this=this@entry=0x7f4322b74c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f43431658a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f434316a84e in QThreadPrivate::start (arg=0x2486110) at thread/qthread_unix.cpp:331
#8  0x00007f433d4bd6fa in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f434286ab5d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f4323376700 (LWP 11944)):
#0  0x00007f4342878810 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f434285ee82 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f433cb7739c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f433cb774ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f43433a1a9b in QEventDispatcherGlib::processEvents (this=0x7f431c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f4343348dea in QEventLoop::exec (this=this@entry=0x7f4323375c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f43431658a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f434316a84e in QThreadPrivate::start (arg=0x247c400) at thread/qthread_unix.cpp:331
#8  0x00007f433d4bd6fa in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f434286ab5d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f432b427940 (LWP 11941)):
[KCrash Handler]
#6  QXcbScreen::root (this=0x3418220) at qxcbscreen.h:120
#7  QXcbWindow::create (this=0x4a635f0) at qxcbwindow.cpp:441
#8  0x00007f432b077001 in QXcbIntegration::createPlatformWindow (this=<optimized out>, window=0x4a62de0) at qxcbintegration.cpp:201
#9  0x00007f43437ee5c4 in QWindowPrivate::create (this=0x4a62e40, recursive=recursive@entry=false) at kernel/qwindow.cpp:392
#10 0x00007f43437ee7cb in QWindow::create (this=this@entry=0x4a62de0) at kernel/qwindow.cpp:548
#11 0x00007f4343dcf3c0 in QWidgetPrivate::create_sys (this=this@entry=0x2501450, window=window@entry=0, initializeWindow=initializeWindow@entry=true, destroyOldWindow=destroyOldWindow@entry=true) at kernel/qwidget.cpp:1454
#12 0x00007f4343dcf7fb in QWidget::create (this=0x2500b00, window=0, initializeWindow=<optimized out>, destroyOldWindow=<optimized out>) at kernel/qwidget.cpp:1318
#13 0x00007f4343dcfe31 in QWidgetPrivate::createWinId (this=<optimized out>, winid=0) at kernel/qwidget.cpp:2514
#14 0x00007f4343dcdd07 in QWidget::setAttribute (this=0x250cd80, attribute=attribute@entry=Qt::WA_NativeWindow, on=on@entry=true) at kernel/qwidget.cpp:11076
#15 0x00007f4343dcdabe in QWidgetPrivate::enforceNativeChildren (this=0x24713e0) at ../../include/QtWidgets/5.5.1/QtWidgets/private/../../../../../src/widgets/kernel/qwidget_p.h:574
#16 QWidget::setAttribute (this=0x4736670, attribute=<optimized out>, on=<optimized out>) at kernel/qwidget.cpp:11074
#17 0x00007f43442eb58f in KWindowSystem::setMainWindow(QWidget*, unsigned long long) () from /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#18 0x000000000052e34c in MessageWin::slotEdit() ()
#19 0x00007f4343379e4f in QtPrivate::QSlotObjectBase::call (a=0x7ffd20983fd0, r=0x49f8920, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#20 QMetaObject::activate (sender=sender@entry=0x33d6510, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd20983fd0) at kernel/qobject.cpp:3698
#21 0x00007f434337a7d7 in QMetaObject::activate (sender=sender@entry=0x33d6510, m=m@entry=0x7f43442b9a40 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd20983fd0) at kernel/qobject.cpp:3578
#22 0x00007f43441321b2 in QAbstractButton::clicked (this=this@entry=0x33d6510, _t1=false) at .moc/moc_qabstractbutton.cpp:303
#23 0x00007f4343e94f04 in QAbstractButtonPrivate::emitClicked (this=0x490b550) at widgets/qabstractbutton.cpp:534
#24 0x00007f4343e96519 in QAbstractButtonPrivate::click (this=0x490b550) at widgets/qabstractbutton.cpp:527
#25 0x00007f4343e96694 in QAbstractButton::mouseReleaseEvent (this=0x33d6510, e=0x7ffd209844a0) at widgets/qabstractbutton.cpp:1132
#26 0x00007f4343ddaf88 in QWidget::event (this=0x33d6510, event=0x7ffd209844a0) at kernel/qwidget.cpp:9044
#27 0x00007f4343d9805c in QApplicationPrivate::notify_helper (this=this@entry=0x23a8930, receiver=receiver@entry=0x33d6510, e=e@entry=0x7ffd209844a0) at kernel/qapplication.cpp:3716
#28 0x00007f4343d9dc19 in QApplication::notify (this=<optimized out>, receiver=0x33d6510, e=0x7ffd209844a0) at kernel/qapplication.cpp:3276
#29 0x00007f434334b62b in QCoreApplication::notifyInternal (this=0x23a6990, receiver=receiver@entry=0x33d6510, event=event@entry=0x7ffd209844a0) at kernel/qcoreapplication.cpp:965
#30 0x00007f4343d9cb32 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd209844a0, receiver=0x33d6510) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#31 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x33d6510, event=event@entry=0x7ffd209844a0, alienWidget=alienWidget@entry=0x33d6510, nativeWidget=0x49f8920, buttonDown=buttonDown@entry=0x7f43442c8b20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#32 0x00007f4343df557b in QWidgetWindow::handleMouseEvent (this=this@entry=0x454f9c0, event=event@entry=0x7ffd209848b0) at kernel/qwidgetwindow.cpp:555
#33 0x00007f4343df7b3b in QWidgetWindow::event (this=0x454f9c0, event=0x7ffd209848b0) at kernel/qwidgetwindow.cpp:210
#34 0x00007f4343d9805c in QApplicationPrivate::notify_helper (this=this@entry=0x23a8930, receiver=receiver@entry=0x454f9c0, e=e@entry=0x7ffd209848b0) at kernel/qapplication.cpp:3716
#35 0x00007f4343d9d516 in QApplication::notify (this=0x23a6990, receiver=0x454f9c0, e=0x7ffd209848b0) at kernel/qapplication.cpp:3499
#36 0x00007f434334b62b in QCoreApplication::notifyInternal (this=0x23a6990, receiver=receiver@entry=0x454f9c0, event=event@entry=0x7ffd209848b0) at kernel/qcoreapplication.cpp:965
#37 0x00007f43437e7521 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd209848b0, receiver=0x454f9c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#38 QGuiApplicationPrivate::processMouseEvent (e=0x443ff10) at kernel/qguiapplication.cpp:1804
#39 0x00007f43437e91e5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x443ff10) at kernel/qguiapplication.cpp:1596
#40 0x00007f43437ccf38 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#41 0x00007f432b0a1070 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#42 0x00007f433cb771a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f433cb77400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f433cb774ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f43433a1a7f in QEventDispatcherGlib::processEvents (this=0x23e1750, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#46 0x00007f4343348dea in QEventLoop::exec (this=this@entry=0x7ffd20984c30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#47 0x00007f4343350e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#48 0x00000000004c1d37 in main ()

Reported using DrKonqi