Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed: surfing firefox  6.0.2 and plasma desktop shell closes unexpectedly

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb784dad0 (LWP 1355))]

Thread 4 (Thread 0xaf7ffb70 (LWP 1358)):
#0  __pthread_mutex_unlock_usercnt (mutex=0x987ad04, decr=1) at pthread_mutex_unlock.c:47
#1  0x00605656 in pthread_mutex_unlock (mutex=0x987ad04) at forward.c:184
#2  0x02e5654c in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x053bf577 in QEventDispatcherGlib::processEvents (this=0x987ac80, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x05391289 in QEventLoop::processEvents (this=0xaf7ff280, flags=...) at kernel/qeventloop.cpp:149
#5  0x05391522 in QEventLoop::exec (this=0xaf7ff280, flags=...) at kernel/qeventloop.cpp:201
#6  0x0529b2a0 in QThread::exec (this=0x987a550) at thread/qthread.cpp:492
#7  0x05372fdb in QInotifyFileSystemWatcherEngine::run (this=0x987a550) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x0529dda2 in QThreadPrivate::start (arg=0x987a550) at thread/qthread_unix.cpp:320
#9  0x08efde99 in start_thread (arg=0xaf7ffb70) at pthread_create.c:304
#10 0x005f773e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xae1bdb70 (LWP 1359)):
#0  0x00d20d41 in clock_gettime (clock_id=1, tp=0xae1bcff0) at ../sysdeps/unix/clock_gettime.c:116
#1  0x052f3dd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x053c04f2 in updateCurrentTime (this=0x98d6384, tm=...) at kernel/qeventdispatcher_unix.cpp:339
#4  QTimerInfoList::timerWait (this=0x98d6384, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x053bed32 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xae1bd0cc) at kernel/qeventdispatcher_glib.cpp:136
#6  0x053bedcd in timerSourcePrepare (source=0x98d6350, timeout=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x02e54fd4 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x02e55e63 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x02e56524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x053bf577 in QEventDispatcherGlib::processEvents (this=0x98d63e8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x05391289 in QEventLoop::processEvents (this=0xae1bd280, flags=...) at kernel/qeventloop.cpp:149
#12 0x05391522 in QEventLoop::exec (this=0xae1bd280, flags=...) at kernel/qeventloop.cpp:201
#13 0x0529b2a0 in QThread::exec (this=0x98d4f48) at thread/qthread.cpp:492
#14 0x05372fdb in QInotifyFileSystemWatcherEngine::run (this=0x98d4f48) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x0529dda2 in QThreadPrivate::start (arg=0x98d4f48) at thread/qthread_unix.cpp:320
#16 0x08efde99 in start_thread (arg=0xae1bdb70) at pthread_create.c:304
#17 0x005f773e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xac9b9b70 (LWP 1362)):
#0  __pthread_mutex_lock (mutex=0x9a8141c) at pthread_mutex_lock.c:51
#1  0x00605616 in pthread_mutex_lock (mutex=0x9a8141c) at forward.c:182
#2  0x02e54802 in g_main_context_release () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x02e5604f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x02e5692b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x04350304 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x02e7f2df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x08efde99 in start_thread (arg=0xac9b9b70) at pthread_create.c:304
#8  0x005f773e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb784dad0 (LWP 1355)):
[KCrash Handler]
#7  0x00000002 in ?? ()
#8  0x00db7758 in ~QExplicitlySharedDataPointer (this=0x9d72604, __in_chrg=<value optimized out>) at /usr/include/qt4/QtCore/qshareddata.h:161
#9  Solid::Device::~Device (this=0x9d72604, __in_chrg=<value optimized out>) at ../../../solid/solid/device.cpp:85
#10 0x04037087 in ~QHashNode (this=0x98cab74, akey=...) at /usr/include/qt4/QtCore/qhash.h:217
#11 deleteNode2 (this=0x98cab74, akey=...) at /usr/include/qt4/QtCore/qhash.h:519
#12 deleteNode (this=0x98cab74, akey=...) at /usr/include/qt4/QtCore/qhash.h:507
#13 QHash<QString, Solid::Device>::remove (this=0x98cab74, akey=...) at /usr/include/qt4/QtCore/qhash.h:795
#14 0x040343d3 in HotplugEngine::onDeviceRemoved (this=0x98cab60, udi=...) at ../../../../../plasma/generic/dataengines/hotplug/hotplugengine.cpp:243
#15 0x040366a5 in HotplugEngine::qt_metacall (this=0x98cab60, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf996018) at ./hotplugengine.moc:81
#16 0x053986ba in QMetaObject::metacall (object=0x98cab60, cl=QMetaObject::InvokeMetaMethod, idx=25, argv=0xbf996018) at kernel/qmetaobject.cpp:237
#17 0x053a84ff in QMetaObject::activate (sender=0x9876340, m=0xe45c68, local_signal_index=1, argv=0xbf996018) at kernel/qobject.cpp:3287
#18 0x00db8dd3 in Solid::DeviceNotifier::deviceRemoved (this=0x9876340, _t1=...) at ./devicenotifier.moc:94
#19 0x00db9ddc in Solid::DeviceManagerPrivate::_k_deviceRemoved (this=0x9876340, udi=...) at ../../../solid/solid/devicemanager.cpp:207
#20 0x00dba585 in Solid::DeviceManagerPrivate::qt_metacall (this=0x9876340, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9961a8) at ./devicemanager_p.moc:80
#21 0x053986ba in QMetaObject::metacall (object=0x9876340, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbf9961a8) at kernel/qmetaobject.cpp:237
#22 0x053a84ff in QMetaObject::activate (sender=0x98799e0, m=0xe46d40, local_signal_index=1, argv=0xbf9961a8) at kernel/qobject.cpp:3287
#23 0x00dce223 in Solid::Ifaces::DeviceManager::deviceRemoved (this=0x98799e0, _t1=...) at ./ifaces/devicemanager.moc:94
#24 0x00e1517a in slotDeviceRemoved (this=0x98799e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf99642c) at ../../../solid/solid/backends/upower/upowermanager.cpp:164
#25 Solid::Backends::UPower::UPowerManager::qt_metacall (this=0x98799e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf99642c) at ./backends/upower/upowermanager.moc:78
#26 0x053986ba in QMetaObject::metacall (object=0x98799e0, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbf99642c) at kernel/qmetaobject.cpp:237
#27 0x053a84ff in QMetaObject::activate (sender=0x98799ec, m=0x9884cf0, local_signal_index=4, argv=0xbf99642c) at kernel/qobject.cpp:3287
#28 0x0049b9e3 in QDBusInterfacePrivate::metacall (this=0x987b5d8, c=QMetaObject::InvokeMetaMethod, id=4, argv=0xbf99642c) at qdbusinterface.cpp:278
#29 0x00486acd in QDBusConnectionPrivate::deliverCall (this=0x9398e18, object=0x98799ec, msg=..., metaTypes=..., slotIdx=9) at qdbusintegrator.cpp:942
#30 0x004911d7 in QDBusCallDeliveryEvent::placeMetaCall (this=0x9b5a410, object=0x98799ec) at qdbusintegrator_p.h:103
#31 0x053a73b7 in QObject::event (this=0x98799ec, e=0x9b5a410) at kernel/qobject.cpp:1226
#32 0x069b0d24 in QApplicationPrivate::notify_helper (this=0x9312e78, receiver=0x98799ec, e=0x9b5a410) at kernel/qapplication.cpp:4462
#33 0x069b58ce in QApplication::notify (this=0x9309bb0, receiver=0x98799ec, e=0x9b5a410) at kernel/qapplication.cpp:3862
#34 0x011b03ca in KApplication::notify (this=0x9309bb0, receiver=0x98799ec, event=0x9b5a410) at ../../kdeui/kernel/kapplication.cpp:311
#35 0x053920bb in QCoreApplication::notifyInternal (this=0x9309bb0, receiver=0x98799ec, event=0x9b5a410) at kernel/qcoreapplication.cpp:731
#36 0x05395c79 in sendEvent (receiver=0x0, event_type=0, data=0x92bbf50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#37 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x92bbf50) at kernel/qcoreapplication.cpp:1372
#38 0x05395e0d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1265
#39 0x053bf3c4 in sendPostedEvents (s=0x93133e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#40 postEventSourceDispatch (s=0x93133e0) at kernel/qeventdispatcher_glib.cpp:277
#41 0x02e55aa8 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#42 0x02e56270 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#43 0x02e56524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#44 0x053bf53c in QEventDispatcherGlib::processEvents (this=0x92bbaa8, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#45 0x06a671e5 in QGuiEventDispatcherGlib::processEvents (this=0x92bbaa8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#46 0x05391289 in QEventLoop::processEvents (this=0xbf996c14, flags=...) at kernel/qeventloop.cpp:149
#47 0x05391522 in QEventLoop::exec (this=0xbf996c14, flags=...) at kernel/qeventloop.cpp:201
#48 0x05395ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#49 0x069ae8e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#50 0x007055a5 in kdemain (argc=1, argv=0xbf996e24) at ../../../../plasma/desktop/shell/main.cpp:118
#51 0x080485cb in main (argc=1, argv=0xbf996e24) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 268008.

Possible duplicates by query: bug 282665, bug 281300, bug 281285, bug 279287, bug 278141.

Reported using DrKonqi