Bug 291785

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) (Compiled from sources)
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:
plasma crash when i exited dragon player, also i was opneing amraok and my web browser opera

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78c6b20 (LWP 1504))]

Thread 7 (Thread 0xb1719b70 (LWP 1507)):
#0  0x02266892 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x02267637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x02267c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x03005b37 in QEventDispatcherGlib::processEvents (this=0x9d775d8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x02fd61dd in QEventLoop::processEvents (this=0xb17192a0, flags=...) at kernel/qeventloop.cpp:149
#5  0x02fd6421 in QEventLoop::exec (this=0xb17192a0, flags=...) at kernel/qeventloop.cpp:201
#6  0x02ed990b in QThread::exec (this=0x9d76158) at thread/qthread.cpp:498
#7  0x02fb6e2d in QInotifyFileSystemWatcherEngine::run (this=0x9d76158) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x02edc7b3 in QThreadPrivate::start (arg=0x9d76158) at thread/qthread_unix.cpp:331
#9  0x0934ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#10 0x007c80ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 6 (Thread 0xafa8bb70 (LWP 1508)):
#0  0x0091a416 in __kernel_vsyscall ()
#1  0x09352a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x007d5cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x05aa69a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x05aa69ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x0934ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x007c80ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 5 (Thread 0xad2e9b70 (LWP 1511)):
#0  0x09351d37 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x007d5f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x02265f16 in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0226756d in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x02267c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x03005b37 in QEventDispatcherGlib::processEvents (this=0xa625cb0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x02fd61dd in QEventLoop::processEvents (this=0xad2e92a0, flags=...) at kernel/qeventloop.cpp:149
#7  0x02fd6421 in QEventLoop::exec (this=0xad2e92a0, flags=...) at kernel/qeventloop.cpp:201
#8  0x02ed990b in QThread::exec (this=0xa624628) at thread/qthread.cpp:498
#9  0x02fb6e2d in QInotifyFileSystemWatcherEngine::run (this=0xa624628) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x02edc7b3 in QThreadPrivate::start (arg=0xa624628) at thread/qthread_unix.cpp:331
#11 0x0934ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x007c80ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xab862b70 (LWP 1517)):
#0  0x09351d50 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x007d5f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x02266e70 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x022678f0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x02267f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x08e92cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x0228e5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x0934ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0x007c80ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xaa44fb70 (LWP 1519)):
#0  0x0091a416 in __kernel_vsyscall ()
#1  0x09352a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x007d5cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x07752883 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7e6e340) at wtf/FastMalloc.cpp:2495
#4  0x0775299f in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7e6e340) at wtf/FastMalloc.cpp:1618
#5  0x0934ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x007c80ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa9b26b70 (LWP 1520)):
#0  0x09350dc6 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x007d5f14 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0x02267839 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x02267c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x03005b37 in QEventDispatcherGlib::processEvents (this=0xac4cc00, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x02fd61dd in QEventLoop::processEvents (this=0xa9b262d0, flags=...) at kernel/qeventloop.cpp:149
#6  0x02fd6421 in QEventLoop::exec (this=0xa9b262d0, flags=...) at kernel/qeventloop.cpp:201
#7  0x02ed990b in QThread::exec (this=0xac9f888) at thread/qthread.cpp:498
#8  0x02ed99fb in QThread::run (this=0xac9f888) at thread/qthread.cpp:565
#9  0x02edc7b3 in QThreadPrivate::start (arg=0xac9f888) at thread/qthread_unix.cpp:331
#10 0x0934ed31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#11 0x007c80ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb78c6b20 (LWP 1504)):
[KCrash Handler]
#7  operator== (value=0, this=0x9) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xbea2468) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator! (this=0xbea2468) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#10 TaskManager::TaskItem::task (this=0xb9dd1f8) at ../../../libs/taskmanager/taskitem.cpp:113
#11 0x092dc662 in WindowTaskItem::publishIconGeometry (this=0xc265cb0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#12 0x092ed688 in AbstractTaskItem::timerEvent (this=0xc265cb0, event=0xbfa3eb7c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#13 0x02fef994 in QObject::event (this=0xc265cb0, e=0xbfa3eb7c) at kernel/qobject.cpp:1181
#14 0x01b80bd4 in QGraphicsWidget::event (this=0xc265cb0, event=0xbfa3eb7c) at graphicsview/qgraphicswidget.cpp:1455
#15 0x014c1d54 in notify_helper (e=0xbfa3eb7c, receiver=0xc265cb0, this=0x962ca88) at kernel/qapplication.cpp:4486
#16 QApplicationPrivate::notify_helper (this=0x962ca88, receiver=0xc265cb0, e=0xbfa3eb7c) at kernel/qapplication.cpp:4458
#17 0x014c7103 in QApplication::notify (this=0xbfa3eb7c, receiver=0xc265cb0, e=0xbfa3eb7c) at kernel/qapplication.cpp:3886
#18 0x01118681 in KApplication::notify (this=0x96202c0, receiver=0xc265cb0, event=0xbfa3eb7c) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x02fd719e in QCoreApplication::notifyInternal (this=0x96202c0, receiver=0xc265cb0, event=0xbfa3eb7c) at kernel/qcoreapplication.cpp:787
#20 0x03007c10 in sendEvent (event=0xbfa3eb7c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 QTimerInfoList::activateTimers (this=0x9631744) at kernel/qeventdispatcher_unix.cpp:603
#22 0x03005122 in timerSourceDispatch (source=0x9631710) at kernel/qeventdispatcher_glib.cpp:184
#23 0x0226725f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0x02267990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0x02267c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x03005ada in QEventDispatcherGlib::processEvents (this=0x95dd218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#27 0x01579e3a in QGuiEventDispatcherGlib::processEvents (this=0x95dd218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x02fd61dd in QEventLoop::processEvents (this=0xbfa3edf4, flags=...) at kernel/qeventloop.cpp:149
#29 0x02fd6421 in QEventLoop::exec (this=0xbfa3edf4, flags=...) at kernel/qeventloop.cpp:201
#30 0x02fdb19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0x014bf8f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#32 0x00ccd18b in kdemain (argc=1, argv=0xbfa3eff4) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x0804850b in main (argc=1, argv=0xbfa3eff4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 291689, bug 291619, bug 291569, bug 291530, bug 291439.

Reported using DrKonqi