Bug 287006

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 i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
i was trying to shut down, i had a "dimmed" screen which become unresponsive

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76ebb20 (LWP 1881))]

Thread 4 (Thread 0xb16d5b70 (LWP 1885)):
#0  0x021b0d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x023067d5 in do_gettime (frac=0xb16d5010, sec=0xb16d5008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x023d94b6 in QTimerInfoList::updateCurrentTime (this=0x985c9a4) at kernel/qeventdispatcher_unix.cpp:339
#4  0x023d980a in QTimerInfoList::timerWait (this=0x985c9a4, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x023d8053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb16d511c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x023d80ed in timerSourcePrepare (source=0x985c970, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x03f1a88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x03f1b637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x03f1bc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x023d8b37 in QEventDispatcherGlib::processEvents (this=0x985b8e8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x023a91dd in QEventLoop::processEvents (this=0xb16d52a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x023a9421 in QEventLoop::exec (this=0xb16d52a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x022ac90b in QThread::exec (this=0x985a190) at thread/qthread.cpp:498
#14 0x02389e2d in QInotifyFileSystemWatcherEngine::run (this=0x985a190) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x022af7b3 in QThreadPrivate::start (arg=0x985a190) at thread/qthread_unix.cpp:331
#16 0x08df9d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x00bf40ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xafdc9b70 (LWP 1886)):
#0  0x08df8468 in __i686.get_pc_thunk.bx () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x08dfbd8f in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00c01f14 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#3  0x03f1b0c3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x03f1b990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x03f1bc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0x023d8b37 in QEventDispatcherGlib::processEvents (this=0x99ff520, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#7  0x023a91dd in QEventLoop::processEvents (this=0xafdc92a0, flags=...) at kernel/qeventloop.cpp:149
#8  0x023a9421 in QEventLoop::exec (this=0xafdc92a0, flags=...) at kernel/qeventloop.cpp:201
#9  0x022ac90b in QThread::exec (this=0x9545cc8) at thread/qthread.cpp:498
#10 0x02389e2d in QInotifyFileSystemWatcherEngine::run (this=0x9545cc8) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x022af7b3 in QThreadPrivate::start (arg=0x9545cc8) at thread/qthread_unix.cpp:331
#12 0x08df9d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#13 0x00bf40ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xadb47b70 (LWP 1894)):
#0  0x08dfcd44 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x00c01f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x03f1b877 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x03f1bf9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x0668ccea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#5  0x03f425f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0x08df9d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#7  0x00bf40ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb76ebb20 (LWP 1881)):
[KCrash Handler]
#7  0x0000000e in ?? ()
#8  0x07e5696f in TaskGroupItem::~TaskGroupItem (this=0xa34db70, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#9  0x07e56a42 in TaskGroupItem::~TaskGroupItem (this=0xa34db70, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#10 0x023bd5f3 in qDeleteInEventHandler (o=0xa34db70) at kernel/qobject.cpp:3986
#11 0x023c2b80 in QObject::event (this=0xa34db70, e=0xa2619d8) at kernel/qobject.cpp:1200
#12 0x01e04bd4 in QGraphicsWidget::event (this=0xa34db70, event=0xa2619d8) at graphicsview/qgraphicswidget.cpp:1455
#13 0x01745d54 in notify_helper (e=0xa2619d8, receiver=0xa34db70, this=0x91a1938) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x91a1938, receiver=0xa34db70, e=0xa2619d8) at kernel/qapplication.cpp:4458
#15 0x0174b103 in QApplication::notify (this=0xa2619d8, receiver=0xa34db70, e=0xa2619d8) at kernel/qapplication.cpp:3886
#16 0x011d6681 in KApplication::notify (this=0x9191860, receiver=0xa34db70, event=0xa2619d8) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x023aa19e in QCoreApplication::notifyInternal (this=0x9191860, receiver=0xa34db70, event=0xa2619d8) at kernel/qcoreapplication.cpp:787
#18 0x023adf93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x91572e0) at kernel/qcoreapplication.cpp:1428
#20 0x023ae0ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=52) at kernel/qcoreapplication.cpp:1321
#21 0x023ae1d3 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#22 0x017438f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#23 0x0023018b in kdemain (argc=1, argv=0xbf838304) at ../../../../plasma/desktop/shell/main.cpp:120
#24 0x0804850b in main (argc=1, argv=0xbf838304) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 275286.

Possible duplicates by query: bug 286892, bug 286733, bug 286630, bug 286544, bug 286027.

Reported using DrKonqi