Application: lancelot (1.9.5)
KDE Platform Version: 4.9.00
Qt Version: 4.8.1
Operating System: Linux 3.2.0-26-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed: Installed Lancelot Launcher and searched for Amarok. The results showed 2 entries. Upon selecting the first one, Lancelot crashed.

-- Backtrace:
Application: Lancelot (lancelot), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f13ff5117c0 (LWP 2581))]

Thread 11 (Thread 0x7f13e4238700 (LWP 2582)):
#0  __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:66
#1  __pthread_mutex_unlock (mutex=0x7f13dc000a60) at pthread_mutex_unlock.c:290
#2  0x00007f13f380d5d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f13f37d1efc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f13f37d2164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f13fbf86426 in QEventDispatcherGlib::processEvents (this=0x7f13dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f13fbf55c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f13fbf55ed7 in QEventLoop::exec (this=0x7f13e4237d90, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f13fbe54fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f13fbf359ff in QInotifyFileSystemWatcherEngine::run (this=0x1d58f30) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x1d58f30) at thread/qthread_unix.cpp:298
#11 0x00007f13f40d8e9a in start_thread (arg=0x7f13e4238700) at pthread_create.c:308
#12 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f13e37ea700 (LWP 2583)):
#0  0x00007f13fb805b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f13f37d2036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f13f37d2164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f13fbf86426 in QEventDispatcherGlib::processEvents (this=0x7f13d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f13fbf55c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f13fbf55ed7 in QEventLoop::exec (this=0x7f13e37e9d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f13fbe54fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f13fbf359ff in QInotifyFileSystemWatcherEngine::run (this=0x1fec200) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x1fec200) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13e37ea700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f13c6d8b700 (LWP 21545)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x3b4d2a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x3b4d2a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f71699f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x3b4d2a0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13c6d8ade0, parent=0x219e4c0, th=0x3b4d2a0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x3b4d2a0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x3b4d2a0) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13c6d8b700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f13bffff700 (LWP 21546)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x35212e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x35212e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f71699f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x35212e0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13bfffede0, parent=0x219e4c0, th=0x35212e0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x35212e0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x35212e0) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13bffff700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f13b77fe700 (LWP 21547)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x2afb8b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x2afb8b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f71699f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x2afb8b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13b77fdde0, parent=0x219e4c0, th=0x2afb8b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x2afb8b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x2afb8b0) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13b77fe700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f13bf7fe700 (LWP 21548)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x2d7fd60) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x2d7fd60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f71699f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x2d7fd60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13bf7fdde0, parent=0x219e4c0, th=0x2d7fd60) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x2d7fd60) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x2d7fd60) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13bf7fe700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f13c658a700 (LWP 21549)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x3b40260) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x3b40260) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f71699f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x3b40260) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13c6589de0, parent=0x219e4c0, th=0x3b40260) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x3b40260) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x3b40260) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13c658a700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f13c5d89700 (LWP 21550)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x3c13c30) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x3c13c30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13c5d88de0, parent=0x219e4c0, th=0x3c13c30) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x3c13c30) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x3c13c30) at thread/qthread_unix.cpp:298
#8  0x00007f13f40d8e9a in start_thread (arg=0x7f13c5d89700) at pthread_create.c:308
#9  0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f13c5588700 (LWP 21551)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x2b49db0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x2b49db0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13c5587de0, parent=0x219e4c0, th=0x2b49db0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x2b49db0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x2b49db0) at thread/qthread_unix.cpp:298
#8  0x00007f13f40d8e9a in start_thread (arg=0x7f13c5588700) at pthread_create.c:308
#9  0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f13c4b3a700 (LWP 21552)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f13fbe584db in wait (time=18446744073709551615, this=0x207ce70) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x20aeac0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f13f71670eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x219e4c0, th=0x224afc0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f13f71699db in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x224afc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f13f71699f4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x20b1560, th=0x224afc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f13f716884f in ThreadWeaver::ThreadRunHelper::run (this=0x7f13c4b39de0, parent=0x219e4c0, th=0x224afc0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f13f71688db in ThreadWeaver::Thread::run (this=0x224afc0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f13fbe57fcb in QThreadPrivate::start (arg=0x224afc0) at thread/qthread_unix.cpp:298
#9  0x00007f13f40d8e9a in start_thread (arg=0x7f13c4b3a700) at pthread_create.c:308
#10 0x00007f13fb8114bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f13ff5117c0 (LWP 2581)):
[KCrash Handler]
#6  QReadWriteLock::~QReadWriteLock (this=0x25, __in_chrg=<optimized out>) at thread/qreadwritelock.cpp:137
#7  0x00007f13feb080bd in ~QueryMatchPrivate (this=0x7f13ac0eadd0, __in_chrg=<optimized out>) at ../../plasma/querymatch.cpp:72
#8  ~QSharedDataPointer (this=<optimized out>, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qshareddata.h:90
#9  Plasma::QueryMatch::~QueryMatch (this=<optimized out>, __in_chrg=<optimized out>) at ../../plasma/querymatch.cpp:100
#10 0x00007f13feb1cb3e in Plasma::RunnerManager::run (this=0x20752a0, id=...) at ../../plasma/runnermanager.cpp:595
#11 0x00007f13fe2afccd in Lancelot::Models::Runner::activate(int) () from /usr/lib/liblancelot-datamodels.so.1
#12 0x00007f13fe52cb1c in Lancelot::ActionListModel::activated(int) () from /usr/lib/liblancelot.so.2
#13 0x00007f13fe51321b in ?? () from /usr/lib/liblancelot.so.2
#14 0x00007f13fe514a49 in ?? () from /usr/lib/liblancelot.so.2
#15 0x00007f13fbf6b281 in QMetaObject::activate (sender=0x2b93660, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#16 0x00007f13fe507903 in Lancelot::ExtenderButton::activate() () from /usr/lib/liblancelot.so.2
#17 0x00007f13fbf6b281 in QMetaObject::activate (sender=0x2b93660, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#18 0x00007f13fccdc453 in QGraphicsItem::sceneEvent (this=0x2b93670, event=0x7fffcfec87b0) at graphicsview/qgraphicsitem.cpp:6741
#19 0x00007f13fcd04c4a in QGraphicsScenePrivate::sendMouseEvent (this=0x1dcd4a0, mouseEvent=0x7fffcfec87b0) at graphicsview/qgraphicsscene.cpp:1295
#20 0x00007f13fcd05635 in QGraphicsScene::mouseReleaseEvent (this=<optimized out>, mouseEvent=0x7fffcfec87b0) at graphicsview/qgraphicsscene.cpp:4128
#21 0x00007f13fcd1379f in QGraphicsScene::event (this=0x1dc6070, event=0x7fffcfec87b0) at graphicsview/qgraphicsscene.cpp:3458
#22 0x00007f13fc6f6894 in notify_helper (e=0x7fffcfec87b0, receiver=0x1dc6070, this=0x190b0c0) at kernel/qapplication.cpp:4559
#23 QApplicationPrivate::notify_helper (this=0x190b0c0, receiver=0x1dc6070, e=0x7fffcfec87b0) at kernel/qapplication.cpp:4531
#24 0x00007f13fc6fb713 in QApplication::notify (this=0x18dbbf0, receiver=0x1dc6070, e=0x7fffcfec87b0) at kernel/qapplication.cpp:4420
#25 0x00007f13fd907456 in KApplication::notify (this=0x18dbbf0, receiver=0x1dc6070, event=0x7fffcfec87b0) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007f13fbf56e9c in QCoreApplication::notifyInternal (this=0x18dbbf0, receiver=0x1dc6070, event=0x7fffcfec87b0) at kernel/qcoreapplication.cpp:876
#27 0x00007f13fcd2edd6 in QGraphicsView::mouseReleaseEvent (this=0x1de5190, event=0x7fffcfec91d0) at graphicsview/qgraphicsview.cpp:3338
#28 0x000000000040e307 in _start ()

This bug may be a duplicate of or related to bug 295033.

Possible duplicates by query: bug 303689, bug 303620, bug 301890, bug 300818, bug 297419.

Reported using DrKonqi