Bug 290364

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic i686
Distribution: Ubuntu 11.10

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

Closing a chromium window after terminating a ssh tunnel session in kterm using <cntl><c>

- Unusual behavior I noticed:

Screen flickered

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb786cb20 (LWP 1894))]

Thread 3 (Thread 0xb172db70 (LWP 1895)):
#0  0x00d66d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x015dc7d5 in do_gettime (frac=0xb172d010, sec=0xb172d008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x016af4b6 in QTimerInfoList::updateCurrentTime (this=0x88eabe4) at kernel/qeventdispatcher_unix.cpp:339
#4  0x016af80a in QTimerInfoList::timerWait (this=0x88eabe4, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x016ae053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb172d11c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x016ae0ed in timerSourcePrepare (source=0x88eabb0, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x0567d88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x0567e637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x0567ec2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x016aeb37 in QEventDispatcherGlib::processEvents (this=0x88eaaf0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x0167f1dd in QEventLoop::processEvents (this=0xb172d2a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x0167f421 in QEventLoop::exec (this=0xb172d2a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x0158290b in QThread::exec (this=0x88e9198) at thread/qthread.cpp:498
#14 0x0165fe2d in QInotifyFileSystemWatcherEngine::run (this=0x88e9198) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x015857b3 in QThreadPrivate::start (arg=0x88e9198) at thread/qthread_unix.cpp:331
#16 0x06b8dd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x004a70ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xaeb2ab70 (LWP 1901)):
#0  0x06b90d44 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x004b4f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x0567d87f in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0567e637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x0567ec2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x016aeb37 in QEventDispatcherGlib::processEvents (this=0x8b10e08, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x0167f1dd in QEventLoop::processEvents (this=0xaeb2a2a0, flags=...) at kernel/qeventloop.cpp:149
#7  0x0167f421 in QEventLoop::exec (this=0xaeb2a2a0, flags=...) at kernel/qeventloop.cpp:201
#8  0x0158290b in QThread::exec (this=0x8b21ad8) at thread/qthread.cpp:498
#9  0x0165fe2d in QInotifyFileSystemWatcherEngine::run (this=0x8b21ad8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x015857b3 in QThreadPrivate::start (arg=0x8b21ad8) at thread/qthread_unix.cpp:331
#11 0x06b8dd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x004a70ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb786cb20 (LWP 1894)):
[KCrash Handler]
#7  isNull (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0x9671738) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x04a89662 in WindowTaskItem::publishIconGeometry (this=0x97c4290) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0x04a9a688 in AbstractTaskItem::timerEvent (this=0x97c4290, event=0xbfc14edc) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0x01698994 in QObject::event (this=0x97c4290, e=0xbfc14edc) at kernel/qobject.cpp:1181
#13 0x075a1bd4 in QGraphicsWidget::event (this=0x97c4290, event=0xbfc14edc) at graphicsview/qgraphicswidget.cpp:1455
#14 0x06ee2d54 in notify_helper (e=0xbfc14edc, receiver=0x97c4290, this=0x8273448) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x8273448, receiver=0x97c4290, e=0xbfc14edc) at kernel/qapplication.cpp:4458
#16 0x06ee8103 in QApplication::notify (this=0xbfc14edc, receiver=0x97c4290, e=0xbfc14edc) at kernel/qapplication.cpp:3886
#17 0x012c8681 in KApplication::notify (this=0x8267b80, receiver=0x97c4290, event=0xbfc14edc) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x0168019e in QCoreApplication::notifyInternal (this=0x8267b80, receiver=0x97c4290, event=0xbfc14edc) at kernel/qcoreapplication.cpp:787
#19 0x016b0c10 in sendEvent (event=0xbfc14edc, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x8277b74) at kernel/qeventdispatcher_unix.cpp:603
#21 0x016ae155 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#22 idleTimerSourceDispatch (source=0x8277ba8) at kernel/qeventdispatcher_glib.cpp:231
#23 0x0567e25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0x0567e990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0x0567ec2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x016aeada in QEventDispatcherGlib::processEvents (this=0x8229218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#27 0x06f9ae3a in QGuiEventDispatcherGlib::processEvents (this=0x8229218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x0167f1dd in QEventLoop::processEvents (this=0xbfc15154, flags=...) at kernel/qeventloop.cpp:149
#29 0x0167f421 in QEventLoop::exec (this=0xbfc15154, flags=...) at kernel/qeventloop.cpp:201
#30 0x0168419d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0x06ee08f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#32 0x00da818b in kdemain (argc=1, argv=0xbfc15354) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x0804850b in main (argc=1, argv=0xbfc15354) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 290336, bug 290300, bug 290291, bug 290289, bug 290280.

Reported using DrKonqi