Bug 315278

Application: krdc (4.9.4)
KDE Platform Version: 4.9.4
Qt Version: 4.8.3
Operating System: Linux 3.5.0-23-generic x86_64
Distribution: Ubuntu 12.10

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

I service several computers in remote locations at once and when I open roughly about 8 vnc connections and one of the computers breaks connections with me the whole program crashes. Simular results even with 3 or 4 connections established. This doesn't happen every time.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KRDC (krdc), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa4fb878780 (LWP 13549))]

Thread 2 (Thread 0x7fa4e5f4a700 (LWP 13553)):
#0  0x00007fa4f787d303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa4f5148d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4f51491e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa4ebe6e4a6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fa4f516c645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa4f5a22e9a in start_thread (arg=0x7fa4e5f4a700) at pthread_create.c:308
#6  0x00007fa4f7888cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa4fb878780 (LWP 13549)):
[KCrash Handler]
#6  0x00000000004221e1 in MainWindow::updateActionStatus (this=this@entry=0x1fba8c0) at ../../krdc/mainwindow.cpp:882
#7  0x0000000000422fab in MainWindow::tabChanged (this=0x1fba8c0, index=<optimized out>) at ../../krdc/mainwindow.cpp:1075
#8  0x0000000000429b05 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./mainwindow.moc:137
#9  MainWindow::qt_static_metacall (_o=0x1fba8c0, _c=4294967295, _id=0, _a=0x7fa4f7b4d758 <main_arena+24>) at ./mainwindow.moc:104
#10 0x00007fa4f9a0ff5f in QMetaObject::activate (sender=0x1fabe30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff8c8dd8e0) at kernel/qobject.cpp:3547
#11 0x00007fa4f8946c4e in QTabWidget::currentChanged (this=this@entry=0x1fabe30, _t1=_t1@entry=0) at .moc/release-shared/moc_qtabwidget.cpp:214
#12 0x00007fa4f8946d59 in QTabWidgetPrivate::_q_showTab (this=0x203c590, index=0) at widgets/qtabwidget.cpp:745
#13 0x00007fa4f9a0ff5f in QMetaObject::activate (sender=0x20413d0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff8c8dda60) at kernel/qobject.cpp:3547
#14 0x00007fa4f893c17e in QTabBar::currentChanged (this=<optimized out>, _t1=0) at .moc/release-shared/moc_qtabbar.cpp:215
#15 0x00007fa4f893fa9e in QTabBar::setCurrentIndex (this=<optimized out>, index=<optimized out>) at widgets/qtabbar.cpp:1233
#16 0x00007fa4f894195d in QTabBar::mousePressEvent (this=0x20413d0, event=0x7fff8c8de420) at widgets/qtabbar.cpp:1762
#17 0x00007fa4f92beb42 in KTabBar::mousePressEvent (this=0x20413d0, event=0x7fff8c8de420) at ../../kdeui/widgets/ktabbar.cpp:115
#18 0x00007fa4f8530cf3 in QWidget::event (this=0x20413d0, event=0x7fff8c8de420) at kernel/qwidget.cpp:8367
#19 0x00007fa4f89419f6 in QTabBar::event (this=0x20413d0, event=0x7fff8c8de420) at widgets/qtabbar.cpp:1514
#20 0x00007fa4f84e0e9c in QApplicationPrivate::notify_helper (this=this@entry=0x1d62950, receiver=receiver@entry=0x20413d0, e=e@entry=0x7fff8c8de420) at kernel/qapplication.cpp:4562
#21 0x00007fa4f84e5b6b in QApplication::notify (this=<optimized out>, receiver=0x20413d0, e=0x7fff8c8de420) at kernel/qapplication.cpp:4105
#22 0x00007fa4f91e91d6 in KApplication::notify (this=0x7fff8c8df110, receiver=0x20413d0, event=0x7fff8c8de420) at ../../kdeui/kernel/kapplication.cpp:311
#23 0x00007fa4f99fa56e in QCoreApplication::notifyInternal (this=0x7fff8c8df110, receiver=0x20413d0, event=0x7fff8c8de420) at kernel/qcoreapplication.cpp:915
#24 0x00007fa4f84e1cd3 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#25 QApplicationPrivate::sendMouseEvent (receiver=0x20413d0, event=0x7fff8c8de420, alienWidget=0x20413d0, nativeWidget=0x1fabe30, buttonDown=0x7fa4f8fbd308 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3173
#26 0x00007fa4f855f554 in QETWidget::translateMouseEvent (this=this@entry=0x1fabe30, event=event@entry=0x7fff8c8deba0) at kernel/qapplication_x11.cpp:4622
#27 0x00007fa4f855e44f in QApplication::x11ProcessEvent (this=0x7fff8c8df110, event=0x7fff8c8deba0) at kernel/qapplication_x11.cpp:3737
#28 0x00007fa4f8585fa2 in x11EventSourceDispatch (s=0x1d67070, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x00007fa4f5148ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fa4f5148de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fa4f5148ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fa4f9a28bf6 in QEventDispatcherGlib::processEvents (this=0x1d3be00, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0x00007fa4f8585c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00007fa4f99f92bf in QEventLoop::processEvents (this=this@entry=0x7fff8c8def70, flags=...) at kernel/qeventloop.cpp:149
#35 0x00007fa4f99f9548 in QEventLoop::exec (this=0x7fff8c8def70, flags=...) at kernel/qeventloop.cpp:204
#36 0x00007fa4f99fe708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#37 0x0000000000415c10 in main (argc=<optimized out>, argv=0x7fff8c8df268) at ../../krdc/main.cpp:104

Reported using DrKonqi