Bug 345794

When I try to establish a VNC connection while a RDP connection is active, KRDC crashes immediately. This is always reproducible.

Reproducible: Always

Steps to Reproduce:
1. Open a RDP connection
2. Select "Neue Verbindung" (should be "New connection" or similar in English version)
3. Open a VNC connection

Actual Results:  
KRDC crashes immediately.

Expected Results:  
Both connections should co-exist.

Application: krdc (4.8.5 (4.8.5))
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-79-generic x86_64
Distribution: Ubuntu 12.04.5 LTS

-- 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 0x7f5d898a0780 (LWP 5143))]

Thread 3 (Thread 0x7f5d73840700 (LWP 5144)):
#0  __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:55
#1  __pthread_mutex_unlock (mutex=0x7f5d6c000a60) at pthread_mutex_unlock.c:290
#2  0x00007f5d830395e1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5d82ffdaae in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5d82ffdf96 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5d82ffe124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f5d86bfe426 in QEventDispatcherGlib::processEvents (this=0x7f5d6c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007f5d86bcdc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f5d86bcded7 in QEventLoop::exec (this=0x7f5d7383fdd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f5d86accfa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007f5d86bad9ff in QInotifyFileSystemWatcherEngine::run (this=0x1c1fc20) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007f5d86acffcb in QThreadPrivate::start (arg=0x1c1fc20) at thread/qthread_unix.cpp:298
#12 0x00007f5d834cae9a in start_thread (arg=0x7f5d73840700) at pthread_create.c:308
#13 0x00007f5d864888bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f5d7223f700 (LWP 5412)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f5d86ad04db in wait (time=18446744073709551615, this=0x7f5d6800d6e0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x7f5d68003a50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f5d86acc314 in QSemaphore::acquire (this=0x7f5d7223e980, n=1) at thread/qsemaphore.cpp:144
#4  0x00007f5d86be377c in QMetaObject::activate (sender=0x1ef8d70, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7f5d7223e9f0) at kernel/qobject.cpp:3525
#5  0x00007f5d75bd7ad7 in VncClientThread::imageUpdated (this=<optimized out>, _t1=0, _t2=0, _t3=1440, _t4=900) at ./moc_vncclientthread.cpp:129
#6  0x00007f5d75bd7fc8 in emitUpdated (h=900, w=1440, y=0, x=0, this=0x1ef8d70) at ../../../krdc/vnc/vncclientthread.cpp:321
#7  VncClientThread::updatefb (cl=0x7f5d7449b010, x=0, y=0, w=1440, h=900) at ../../../krdc/vnc/vncclientthread.cpp:154
#8  0x00007f5d7599f043 in HandleRFBServerMessage () from /usr/lib/libvncclient.so.0
#9  0x00007f5d75bd8b54 in VncClientThread::run (this=0x1ef8d70) at ../../../krdc/vnc/vncclientthread.cpp:390
#10 0x00007f5d86acffcb in QThreadPrivate::start (arg=0x1ef8d70) at thread/qthread_unix.cpp:298
#11 0x00007f5d834cae9a in start_thread (arg=0x7f5d7223f700) at pthread_create.c:308
#12 0x00007f5d864888bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f5d898a0780 (LWP 5143)):
[KCrash Handler]
#6  0x00000000004254f4 in MainWindow::statusChanged (this=0x15b5070, status=RemoteView::Authenticating) at ../../krdc/mainwindow.cpp:445
#7  0x000000000042b3a6 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=0x15b5070, _c=<optimized out>) at ./mainwindow.moc:123
#8  MainWindow::qt_static_metacall (_o=0x15b5070, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./mainwindow.moc:104
#9  0x00007f5d86be3281 in QMetaObject::activate (sender=0x1ef8d10, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff166984b0) at kernel/qobject.cpp:3547
#10 0x00007f5d88bac4f1 in RemoteView::statusChanged (this=<optimized out>, _t1=RemoteView::Authenticating) at ./moc_remoteview.cpp:206
#11 0x00007f5d88bac540 in RemoteView::setStatus (this=0x1ef8d10, s=RemoteView::Connected) at ../../../krdc/core/remoteview.cpp:83
#12 0x00007f5d75bdbe43 in VncView::updateImage (this=0x1ef8d10, x=0, y=0, w=<optimized out>, h=<optimized out>) at ../../../krdc/vnc/vncview.cpp:330
#13 0x00007f5d86be8446 in QObject::event (this=0x1ef8d10, e=<optimized out>) at kernel/qobject.cpp:1195
#14 0x00007f5d87618b7b in QWidget::event (this=0x1ef8d10, event=0x7f5d6800d750) at kernel/qwidget.cpp:8821
#15 0x00007f5d875c8894 in notify_helper (e=0x7f5d6800d750, receiver=0x1ef8d10, this=0x14e2580) at kernel/qapplication.cpp:4559
#16 QApplicationPrivate::notify_helper (this=0x14e2580, receiver=0x1ef8d10, e=0x7f5d6800d750) at kernel/qapplication.cpp:4531
#17 0x00007f5d875cd713 in QApplication::notify (this=0x7fff16699260, receiver=0x1ef8d10, e=0x7f5d6800d750) at kernel/qapplication.cpp:4420
#18 0x00007f5d883023f6 in KApplication::notify (this=0x7fff16699260, receiver=0x1ef8d10, event=0x7f5d6800d750) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007f5d86bcee9c in QCoreApplication::notifyInternal (this=0x7fff16699260, receiver=0x1ef8d10, event=0x7f5d6800d750) at kernel/qcoreapplication.cpp:876
#20 0x00007f5d86bd2c6a in sendEvent (event=0x7f5d6800d750, receiver=0x1ef8d10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#21 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x14bb520) at kernel/qcoreapplication.cpp:1500
#22 0x00007f5d86bfdf93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#23 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#24 0x00007f5d82ffdd13 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0