Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic-pae i686
Distribution: Ubuntu 11.10

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

Plasma crashed either while locking or unlocking the screen.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb1ed5b20 (LWP 2482))]

Thread 3 (Thread 0xab1e0b70 (LWP 2483)):
#0  0xb7762424 in __kernel_vsyscall ()
#1  0xb760c40e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f0034b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ef1896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2ef1c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb6468b37 in QEventDispatcherGlib::processEvents (this=0x9802f40, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb64391dd in QEventLoop::processEvents (this=0xab1e02a0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb6439421 in QEventLoop::exec (this=0xab1e02a0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb633c90b in QThread::exec (this=0x97ffbb0) at thread/qthread.cpp:498
#9  0xb6419e2d in QInotifyFileSystemWatcherEngine::run (this=0x97ffbb0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb633f7b3 in QThreadPrivate::start (arg=0x97ffbb0) at thread/qthread_unix.cpp:331
#11 0xb300bd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb761b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa9704b70 (LWP 2484)):
#0  0xb300ed50 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7628f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2ef1785 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ef1c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb6468b37 in QEventDispatcherGlib::processEvents (this=0x99302c8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0xb64391dd in QEventLoop::processEvents (this=0xa97042a0, flags=...) at kernel/qeventloop.cpp:149
#6  0xb6439421 in QEventLoop::exec (this=0xa97042a0, flags=...) at kernel/qeventloop.cpp:201
#7  0xb633c90b in QThread::exec (this=0x959cfc8) at thread/qthread.cpp:498
#8  0xb6419e2d in QInotifyFileSystemWatcherEngine::run (this=0x959cfc8) at io/qfilesystemwatcher_inotify.cpp:248
#9  0xb633f7b3 in QThreadPrivate::start (arg=0x959cfc8) at thread/qthread_unix.cpp:331
#10 0xb300bd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#11 0xb761b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb1ed5b20 (LWP 2482)):
[KCrash Handler]
#7  0x00000001 in ?? ()
#8  0xb36f9426 in ~QExplicitlySharedDataPointer (this=0x9c8fcb4, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qshareddata.h:161
#9  Solid::Device::~Device (this=0x9c8fcb4, __in_chrg=<optimized out>) at ../../../solid/solid/device.cpp:87
#10 0xaa91530a in ~QHashNode (this=<optimized out>, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qhash.h:216
#11 deleteNode2 (node=<optimized out>) at /usr/include/qt4/QtCore/qhash.h:519
#12 deleteNode (node=<optimized out>, this=0x9c561fc) at /usr/include/qt4/QtCore/qhash.h:507
#13 QHash<QString, Solid::Device>::remove (this=0x9c561fc, akey=<optimized out>) at /usr/include/qt4/QtCore/qhash.h:795
#14 0xaa91546a in remove (akey=..., this=0x9c561fc) at /usr/include/qt4/QtCore/qhash.h:784
#15 HotplugEngine::onDeviceRemoved (this=0x9c561e8, udi=...) at ../../../../../plasma/generic/dataengines/hotplug/hotplugengine.cpp:241
#16 0xaa917b23 in HotplugEngine::qt_metacall (this=0x9c561e8, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfb2d238) at ./hotplugengine.moc:81
#17 0xb6440b7d in metacall (argv=0xbfb2d238, idx=25, cl=QMetaObject::InvokeMetaMethod, object=0x9c561e8) at kernel/qmetaobject.cpp:237
#18 QMetaObject::metacall (object=0x9c561e8, cl=QMetaObject::InvokeMetaMethod, idx=25, argv=0xbfb2d238) at kernel/qmetaobject.cpp:232
#19 0xb644fa6a in QMetaObject::activate (sender=0x9811db0, m=0xb37abf98, local_signal_index=1, argv=0xbfb2d238) at kernel/qobject.cpp:3278
#20 0xb36faa65 in Solid::DeviceNotifier::deviceRemoved (this=0x9811db0, _t1=...) at ./devicenotifier.moc:94
#21 0xb36fbdb4 in Solid::DeviceManagerPrivate::_k_deviceRemoved (this=0x9811db0, udi=...) at ../../../solid/solid/devicemanager.cpp:207
#22 0xb36fc5b3 in Solid::DeviceManagerPrivate::qt_metacall (this=0x9811db0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfb2d3b8) at ./devicemanager_p.moc:80
#23 0xb6440b7d in metacall (argv=0xbfb2d3b8, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0x9811db0) at kernel/qmetaobject.cpp:237
#24 QMetaObject::metacall (object=0x9811db0, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfb2d3b8) at kernel/qmetaobject.cpp:232
#25 0xb644fa6a in QMetaObject::activate (sender=0x9802d30, m=0xb37ad06c, local_signal_index=1, argv=0xbfb2d3b8) at kernel/qobject.cpp:3278
#26 0xb3711cd5 in Solid::Ifaces::DeviceManager::deviceRemoved (this=0x9802d30, _t1=...) at ./ifaces/devicemanager.moc:94
#27 0xb375b548 in slotDeviceRemoved (opath=<optimized out>, this=0x9802d30) at ../../../solid/solid/backends/upower/upowermanager.cpp:164
#28 Solid::Backends::UPower::UPowerManager::qt_metacall (this=0x9802d30, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfb2d61c) at ./backends/upower/upowermanager.moc:78
#29 0xb6440b7d in metacall (argv=0xbfb2d61c, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0x9802d30) at kernel/qmetaobject.cpp:237
#30 QMetaObject::metacall (object=0x9802d30, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfb2d61c) at kernel/qmetaobject.cpp:232
#31 0xb644fa6a in QMetaObject::activate (sender=0x9802d3c, m=0x9817b30, local_signal_index=4, argv=0xbfb2d61c) at kernel/qobject.cpp:3278
#32 0xb65a9110 in QDBusInterfacePrivate::metacall (this=0x9803150, c=QMetaObject::InvokeMetaMethod, id=4, argv=0xbfb2d61c) at qdbusinterface.cpp:278
#33 0xb6593d87 in QDBusConnectionPrivate::deliverCall (this=0x917b428, object=0x9802d3c, msg=..., metaTypes=..., slotIdx=-1434419560) at qdbusintegrator.cpp:942
#34 0xb659dc26 in QDBusCallDeliveryEvent::placeMetaCall (this=0xa121ea8, object=0x9802d3c) at qdbusintegrator_p.h:103
#35 0xb6452b52 in QObject::event (this=0x9802d3c, e=0xa121ea8) at kernel/qobject.cpp:1217
#36 0xb5965d54 in notify_helper (e=0xa121ea8, receiver=0x9802d3c, this=0x9086628) at kernel/qapplication.cpp:4486
#37 QApplicationPrivate::notify_helper (this=0x9086628, receiver=0x9802d3c, e=0xa121ea8) at kernel/qapplication.cpp:4458
#38 0xb596b103 in QApplication::notify (this=0xa121ea8, receiver=0x9802d3c, e=0xa121ea8) at kernel/qapplication.cpp:3886
#39 0xb6a9f681 in KApplication::notify (this=0x9075658, receiver=0x9802d3c, event=0xa121ea8) at ../../kdeui/kernel/kapplication.cpp:311
#40 0xb643a19e in QCoreApplication::notifyInternal (this=0x9075658, receiver=0x9802d3c, event=0xa121ea8) at kernel/qcoreapplication.cpp:787
#41 0xb643df93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#42 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x90382e0) at kernel/qcoreapplication.cpp:1428
#43 0xb643e0ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#44 0xb64686a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#45 postEventSourceDispatch (s=0x9089240) at kernel/qeventdispatcher_glib.cpp:277
#46 0xb2ef125f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#47 0xb2ef1990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#48 0xb2ef1c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#49 0xb6468ada in QEventDispatcherGlib::processEvents (this=0x9039218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#50 0xb5a1de3a in QGuiEventDispatcherGlib::processEvents (this=0x9039218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#51 0xb64391dd in QEventLoop::processEvents (this=0xbfb2dcb4, flags=...) at kernel/qeventloop.cpp:149
#52 0xb6439421 in QEventLoop::exec (this=0xbfb2dcb4, flags=...) at kernel/qeventloop.cpp:201
#53 0xb643e19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#54 0xb59638f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#55 0xb771718b in kdemain (argc=1, argv=0xbfb2deb4) at ../../../../plasma/desktop/shell/main.cpp:120
#56 0x0804850b in main (argc=1, argv=0xbfb2deb4) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 278141.

Possible duplicates by query: bug 286318, bug 286237, bug 285340, bug 283797, bug 283263.

Reported using DrKonqi