Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.1 (4.7.1)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- Unusual behavior I noticed: Crashes at startup sometimes or when making new panels/moving desktop elements etc.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f767597a7c0 (LWP 1628))]

Thread 11 (Thread 0x7f76517a9700 (LWP 1664)):
#0  0x00007f766a2f71fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7f764c000988) at pthread_mutex_unlock.c:290
#2  0x00007f76697e5fe4 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f76697e6dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f76697e7429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f767244df3e in QEventDispatcherGlib::processEvents (this=0x2be5730, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f7672421cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f7672421ef7 in QEventLoop::exec (this=0x7f76517a8cd0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f767233927f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f7672404cbf in QInotifyFileSystemWatcherEngine::run (this=0x2be4e30) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f767233bd05 in QThreadPrivate::start (arg=0x2be4e30) at thread/qthread_unix.cpp:331
#11 0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x00007f766a2f3efc in start_thread (arg=0x7f76517a9700) at pthread_create.c:304
#13 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f7648ce0700 (LWP 2089)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x37aef80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x37aef80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7648cdfd20, parent=0x2cbb270, th=0x37aef80) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x37aef80) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f767233bd05 in QThreadPrivate::start (arg=0x37aef80) at thread/qthread_unix.cpp:331
#8  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f766a2f3efc in start_thread (arg=0x7f7648ce0700) at pthread_create.c:304
#10 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f7647cde700 (LWP 2090)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x3265210) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3265210) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7647cddd20, parent=0x2cbb270, th=0x3265210) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x3265210) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f767233bd05 in QThreadPrivate::start (arg=0x3265210) at thread/qthread_unix.cpp:331
#8  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f766a2f3efc in start_thread (arg=0x7f7647cde700) at pthread_create.c:304
#10 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f76484df700 (LWP 2091)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x34db530) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x34db530) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f76484ded20, parent=0x2cbb270, th=0x34db530) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x34db530) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f767233bd05 in QThreadPrivate::start (arg=0x34db530) at thread/qthread_unix.cpp:331
#8  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f766a2f3efc in start_thread (arg=0x7f76484df700) at pthread_create.c:304
#10 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f7649dda700 (LWP 2092)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x7f764c009ba0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x7f764c009ba0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7649dd9d20, parent=0x2cbb270, th=0x7f764c009ba0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x7f764c009ba0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f767233bd05 in QThreadPrivate::start (arg=0x7f764c009ba0) at thread/qthread_unix.cpp:331
#8  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f766a2f3efc in start_thread (arg=0x7f7649dda700) at pthread_create.c:304
#10 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f7645505700 (LWP 2093)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x2970570) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x2970570) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7645504d20, parent=0x2cbb270, th=0x2970570) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x2970570) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f767233bd05 in QThreadPrivate::start (arg=0x2970570) at thread/qthread_unix.cpp:331
#8  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f766a2f3efc in start_thread (arg=0x7f7645505700) at pthread_create.c:304
#10 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f7644d04700 (LWP 7838)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x3867f70) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3867f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3867f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3867f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3867f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3867f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#9  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3867f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#10 0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f7644d03d20, parent=0x2cbb270, th=0x3867f70) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x3867f70) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x00007f767233bd05 in QThreadPrivate::start (arg=0x3867f70) at thread/qthread_unix.cpp:331
#13 0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00007f766a2f3efc in start_thread (arg=0x7f7644d04700) at pthread_create.c:304
#15 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f763ffff700 (LWP 7839)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x3725fd0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3725fd0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x3725fd0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f763fffed20, parent=0x2cbb270, th=0x3725fd0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x3725fd0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f767233bd05 in QThreadPrivate::start (arg=0x3725fd0) at thread/qthread_unix.cpp:331
#9  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f766a2f3efc in start_thread (arg=0x7f763ffff700) at pthread_create.c:304
#11 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f763f7fe700 (LWP 7840)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f767233c1ab in wait (time=18446744073709551615, this=0x2c41a20) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2c3dc00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f766e136864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2cbb270, th=0x2f17ab0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f766e138e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x2f17ab0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f766e138e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x29e8fc0, th=0x2f17ab0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f766e137ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f763f7fdd20, parent=0x2cbb270, th=0x2f17ab0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f766e137d5b in ThreadWeaver::Thread::run (this=0x2f17ab0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f767233bd05 in QThreadPrivate::start (arg=0x2f17ab0) at thread/qthread_unix.cpp:331
#9  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f766a2f3efc in start_thread (arg=0x7f763f7fe700) at pthread_create.c:304
#11 0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f763effd700 (LWP 14445)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f766f452fe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f766f453019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f7666b0056c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f766a2f3efc in start_thread (arg=0x7f763effd700) at pthread_create.c:304
#5  0x00007f767526589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f767597a7c0 (LWP 1628)):
[KCrash Handler]
#6  0x00007f7671db4734 in QGraphicsLayoutItem::isLayout (this=0x3bceca0) at graphicsview/qgraphicslayoutitem.cpp:868
#7  0x00007f7671db36e2 in QGraphicsLayoutPrivate::activateRecursive (this=0x3bb4cc0, item=0x3bceca0) at graphicsview/qgraphicslayout_p.cpp:181
#8  0x00007f7671db3724 in QGraphicsLayoutPrivate::activateRecursive (this=0x3bb4cc0, item=0x3bb2f90) at graphicsview/qgraphicslayout_p.cpp:194
#9  0x00007f7671db30db in QGraphicsLayout::activate (this=0x3bb2f90) at graphicsview/qgraphicslayout.cpp:261
#10 0x00007f7671db3199 in QGraphicsLayout::widgetEvent (this=0x3bb2f90, e=<optimized out>) at graphicsview/qgraphicslayout.cpp:389
#11 0x00007f7671df185a in QGraphicsWidget::event (this=<optimized out>, event=0x3a01850) at graphicsview/qgraphicswidget.cpp:1379
#12 0x00007f76717d3424 in notify_helper (e=0x3a01850, receiver=0x3bb3730, this=0x23e9c40) at kernel/qapplication.cpp:4486
#13 QApplicationPrivate::notify_helper (this=0x23e9c40, receiver=0x3bb3730, e=0x3a01850) at kernel/qapplication.cpp:4458
#14 0x00007f76717d8291 in QApplication::notify (this=0x23d20a0, receiver=0x3bb3730, e=0x3a01850) at kernel/qapplication.cpp:4365
#15 0x00007f76730d11e6 in KApplication::notify (this=0x23d20a0, receiver=0x3bb3730, event=0x3a01850) at ../../kdeui/kernel/kapplication.cpp:311
#16 0x00007f7672422afc in QCoreApplication::notifyInternal (this=0x23d20a0, receiver=0x3bb3730, event=0x3a01850) at kernel/qcoreapplication.cpp:787
#17 0x00007f767242651f in sendEvent (event=0x3a01850, receiver=0x3bb3730) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#18 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x2330430) at kernel/qcoreapplication.cpp:1428
#19 0x00007f767244da73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#20 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#21 0x00007f76697e6a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f76697e7258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f76697e7429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f767244ded6 in QEventDispatcherGlib::processEvents (this=0x2331f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#25 0x00007f767187b07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#26 0x00007f7672421cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#27 0x00007f7672421ef7 in QEventLoop::exec (this=0x7ffff3422e30, flags=...) at kernel/qeventloop.cpp:201
#28 0x00007f7672426789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#29 0x00007f76755641a3 in kdemain (argc=1, argv=0x7ffff3423218) at ../../../../plasma/desktop/shell/main.cpp:120
#30 0x00007f76751a530d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7ffff3423218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff3423208) at libc-start.c:226
#31 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 241685.

Possible duplicates by query: bug 288182, bug 287184, bug 286710, bug 286461, bug 286131.

Reported using DrKonqi