Bug 291392

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:
tried to open directory from Dolphin with VLC but message "Your input can't be opened:" resulted. Opened directory (still within Dolphin) and right-click-select -play with VLC for each track to test whether there was a fault. Plasma crashed on (iirc) five opens, although VLC continued playing each (other open programs continued fine). Repeated with different files selected, same result.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5e43720 (LWP 2422))]

Thread 3 (Thread 0xafdb8b70 (LWP 2423)):
#0  __pthread_mutex_lock (mutex=0xaf4004fc) at pthread_mutex_lock.c:51
#1  0x00814f14 in pthread_mutex_lock (mutex=0xaf4004fc) at forward.c:182
#2  0x017240c3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x01724990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x01724c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x06e2bb37 in QEventDispatcherGlib::processEvents (this=0xaf400478, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x06dfc1dd in QEventLoop::processEvents (this=0xafdb81f0, flags=...) at kernel/qeventloop.cpp:149
#7  0x06dfc421 in QEventLoop::exec (this=0xafdb81f0, flags=...) at kernel/qeventloop.cpp:201
#8  0x06cff90b in QThread::exec (this=0xa22f528) at thread/qthread.cpp:498
#9  0x06ddce2d in QInotifyFileSystemWatcherEngine::run (this=0xa22f528) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x06d027b3 in QThreadPrivate::start (arg=0xa22f528) at thread/qthread_unix.cpp:331
#11 0x058e59cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x008070ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xad996b70 (LWP 2425)):
#0  0x016f4a17 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x00000001 in ?? ()
#2  0x00000010 in ?? ()
#3  0x00200001 in isNull (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#4  operator! (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#5  Plasma::Extender::item (this=0xa37ef28, name=...) at ../../plasma/extenders/extender.cpp:253
#6  0x0a37e998 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xb5e43720 (LWP 2422)):
[KCrash Handler]
#7  operator== (value=0, this=0x9) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xa3fa538) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator! (this=0xa3fa538) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#10 TaskManager::TaskItem::task (this=0x9ae07a8) at ../../../libs/taskmanager/taskitem.cpp:113
#11 0x08a0a590 in WindowTaskItem::publishIconGeometry (this=0xaf11ef0, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#12 0x08a1cb24 in TaskGroupItem::publishIconGeometry (this=0xae41df8, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1438
#13 0x08a1c801 in publishIconGeometry (this=0xae41df8) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#14 TaskGroupItem::publishIconGeometry (this=0xae41df8) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#15 0x08a1b688 in AbstractTaskItem::timerEvent (this=0xae41df8, event=0xbfd5cdec) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#16 0x06e15994 in QObject::event (this=0xae41df8, e=0xbfd5cdec) at kernel/qobject.cpp:1181
#17 0x0262dbd4 in QGraphicsWidget::event (this=0xae41df8, event=0xbfd5cdec) at graphicsview/qgraphicswidget.cpp:1455
#18 0x01f6ed54 in notify_helper (e=0xbfd5cdec, receiver=0xae41df8, this=0x98fba98) at kernel/qapplication.cpp:4486
#19 QApplicationPrivate::notify_helper (this=0x98fba98, receiver=0xae41df8, e=0xbfd5cdec) at kernel/qapplication.cpp:4458
#20 0x01f74103 in QApplication::notify (this=0xbfd5cdec, receiver=0xae41df8, e=0xbfd5cdec) at kernel/qapplication.cpp:3886
#21 0x00fe8681 in KApplication::notify (this=0x98ed578, receiver=0xae41df8, event=0xbfd5cdec) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x06dfd19e in QCoreApplication::notifyInternal (this=0x98ed578, receiver=0xae41df8, event=0xbfd5cdec) at kernel/qcoreapplication.cpp:787
#23 0x06e2dc10 in sendEvent (event=0xbfd5cdec, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QTimerInfoList::activateTimers (this=0x98fde34) at kernel/qeventdispatcher_unix.cpp:603
#25 0x06e2b155 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#26 idleTimerSourceDispatch (source=0x98fde68) at kernel/qeventdispatcher_glib.cpp:231
#27 0x0172425f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0x01724990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0x01724c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#30 0x06e2bada in QEventDispatcherGlib::processEvents (this=0x9865218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#31 0x02026e3a in QGuiEventDispatcherGlib::processEvents (this=0x9865218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#32 0x06dfc1dd in QEventLoop::processEvents (this=0xbfd5d064, flags=...) at kernel/qeventloop.cpp:149
#33 0x06dfc421 in QEventLoop::exec (this=0xbfd5d064, flags=...) at kernel/qeventloop.cpp:201
#34 0x06e0119d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#35 0x01f6c8f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#36 0x00d2c18b in kdemain (argc=1, argv=0xbfd5d264) at ../../../../plasma/desktop/shell/main.cpp:120
#37 0x0804850b in main (argc=1, argv=0xbfd5d264) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 291377, bug 291295, bug 291257, bug 291187, bug 291127.

Reported using DrKonqi