Application: amarok (2.8.0)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.0-24-generic x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:

Amarok froze when trying to select another track to play. Also at the same time Amarok appeared to be updating the collection in the background and was using nearly all the CPU resource to do it. I could not make it play any more tracks during its update. I had to use Ctl-Alt-Esc to stop it.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ffaa9f477c0 (LWP 4623))]

Thread 12 (Thread 0x7ffa81abf700 (LWP 4628)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007ffaa72f27f4 in wait (time=60000, this=0x17996f0) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1778788, time=60000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ffaa8f8512e in AbstractDirectoryWatcher::run() () from /usr/lib/libamaroklib.so.1
#4  0x00007ffaa4511cb2 in ThreadWeaver::JobRunHelper::runTheJob (this=this@entry=0x7ffa81abede0, th=th@entry=0x1701f60, job=job@entry=0x1778760) at ../../../threadweaver/Weaver/Job.cpp:106
#5  0x00007ffaa4511e6e in ThreadWeaver::Job::execute (this=0x1778760, th=0x1701f60) at ../../../threadweaver/Weaver/Job.cpp:135
#6  0x00007ffaa45116bb in ThreadWeaver::Thread::run (this=0x1701f60) at ../../../threadweaver/Weaver/Thread.cpp:108
#7  0x00007ffaa72f232f in QThreadPrivate::start (arg=0x1701f60) at thread/qthread_unix.cpp:349
#8  0x00007ffaa2f89182 in start_thread (arg=0x7ffa81abf700) at pthread_create.c:312
#9  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (Thread 0x7ffa77be8700 (LWP 4629)):
#0  0x00007fff0e5f7a1f in ?? ()
#1  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7ffa76498700 (LWP 4630)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffaa72f2816 in wait (time=18446744073709551615, this=0x179a760) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x179a668, mutex=0x13e3c00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ffaa450fe6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x179a640, th=0x18e5f00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007ffaa4512903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x17123f0, th=0x18e5f00, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007ffaa451291c in ThreadWeaver::WorkingHardState::applyForWork (this=0x17123f0, th=0x18e5f00, previous=0x352fc40) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007ffaa451161f in ThreadWeaver::Thread::run (this=0x18e5f00) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007ffaa72f232f in QThreadPrivate::start (arg=0x18e5f00) at thread/qthread_unix.cpp:349
#8  0x00007ffaa2f89182 in start_thread (arg=0x7ffa76498700) at pthread_create.c:312
#9  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7ffa7565f700 (LWP 4631)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffaa72f2816 in wait (time=18446744073709551615, this=0x179a760) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x179a668, mutex=0x13e3c00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ffaa450fe6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x179a640, th=0x1b060e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007ffaa4512903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x17123f0, th=0x1b060e0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007ffaa451291c in ThreadWeaver::WorkingHardState::applyForWork (this=0x17123f0, th=0x1b060e0, previous=0x380e480) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007ffaa451161f in ThreadWeaver::Thread::run (this=0x1b060e0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007ffaa72f232f in QThreadPrivate::start (arg=0x1b060e0) at thread/qthread_unix.cpp:349
#8  0x00007ffaa2f89182 in start_thread (arg=0x7ffa7565f700) at pthread_create.c:312
#9  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7ffa74e5e700 (LWP 4632)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffaa72f2816 in wait (time=18446744073709551615, this=0x179a760) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x179a668, mutex=0x13e3c00, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007ffaa450fe6c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x179a640, th=0x1b0b380) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007ffaa4512903 in ThreadWeaver::WorkingHardState::applyForWork (this=0x17123f0, th=0x1b0b380, previous=0x3d4d4f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007ffaa451161f in ThreadWeaver::Thread::run (this=0x1b0b380) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007ffaa72f232f in QThreadPrivate::start (arg=0x1b0b380) at thread/qthread_unix.cpp:349
#7  0x00007ffaa2f89182 in start_thread (arg=0x7ffa74e5e700) at pthread_create.c:312
#8  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7ffa55a9c700 (LWP 4633)):
#0  0x00007ffaa192940f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ffaa192b9bb in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffaa192bf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffaa192c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffaa74217be in QEventDispatcherGlib::processEvents (this=0x7ffa500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007ffaa73f30af in QEventLoop::processEvents (this=this@entry=0x7ffa55a9bde0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007ffaa73f33a5 in QEventLoop::exec (this=this@entry=0x7ffa55a9bde0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007ffaa72efc5f in QThread::exec (this=this@entry=0x1b50970) at thread/qthread.cpp:537
#8  0x00007ffaa73d4823 in QInotifyFileSystemWatcherEngine::run (this=0x1b50970) at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007ffaa72f232f in QThreadPrivate::start (arg=0x1b50970) at thread/qthread_unix.cpp:349
#10 0x00007ffaa2f89182 in start_thread (arg=0x7ffa55a9c700) at pthread_create.c:312
#11 0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7ffa4e5f7700 (LWP 4634)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffa9dd6581d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007ffa9dd65859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007ffaa2f89182 in start_thread (arg=0x7ffa4e5f7700) at pthread_create.c:312
#4  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7ffa0ceba700 (LWP 4639)):
#0  0x00007ffaa6c9afbd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffaa192bfe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffaa192c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffaa74217be in QEventDispatcherGlib::processEvents (this=0x7ffa000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0x00007ffaa73f30af in QEventLoop::processEvents (this=this@entry=0x7ffa0ceb9e20, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ffaa73f33a5 in QEventLoop::exec (this=this@entry=0x7ffa0ceb9e20, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007ffaa72efc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#7  0x00007ffaa72f232f in QThreadPrivate::start (arg=0x1eb89f0) at thread/qthread_unix.cpp:349
#8  0x00007ffaa2f89182 in start_thread (arg=0x7ffa0ceba700) at pthread_create.c:312
#9  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7ffa07fff700 (LWP 4640)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffaa3563ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007ffaa3564039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007ffaa2f89182 in start_thread (arg=0x7ffa07fff700) at pthread_create.c:312
#4  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7ffa5aa2a700 (LWP 4675)):
#0  0x00007ffaa2f8b5c0 in __GI___pthread_mutex_lock (mutex=0x7ff974000a60) at ../nptl/pthread_mutex_lock.c:146
#1  0x00007ffaa196d991 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffaa192ba6c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffaa192bf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffaa192c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffaa74217be in QEventDispatcherGlib::processEvents (this=0x7ff9740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007ffaa73f30af in QEventLoop::processEvents (this=this@entry=0x7ffa5aa29de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ffaa73f33a5 in QEventLoop::exec (this=this@entry=0x7ffa5aa29de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ffaa72efc5f in QThread::exec (this=this@entry=0x7ffa70079e20) at thread/qthread.cpp:537
#9  0x00007ffaa73d4823 in QInotifyFileSystemWatcherEngine::run (this=0x7ffa70079e20) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007ffaa72f232f in QThreadPrivate::start (arg=0x7ffa70079e20) at thread/qthread_unix.cpp:349
#11 0x00007ffaa2f89182 in start_thread (arg=0x7ffa5aa2a700) at pthread_create.c:312
#12 0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7ff9791c3700 (LWP 4715)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffa9daa620d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007ffa9dd94fd6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007ffaa2f89182 in start_thread (arg=0x7ff9791c3700) at pthread_create.c:312
#4  0x00007ffaa6ca830d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ffaa9f477c0 (LWP 4623)):
[KCrash Handler]
#6  QObject::thread (this=0x0) at kernel/qobject.cpp:1370
#7  0x00007ffaa789745e in KDBusConnectionPool::threadConnection () at ../../kdecore/kernel/kdbusconnectionpool.cpp:64
#8  0x00007ffaa4b3dfdc in emitSignal (signalName=..., args=...) at ../../kio/kio/kdirnotify.cpp:34
#9  0x00007ffaa4b3e66a in OrgKdeKDirNotifyInterface::emitLeftDirectory (url=...) at ../../kio/kio/kdirnotify.cpp:69
#10 0x00007ffaa4b27447 in sendSignal (this=<optimized out>, url=..., entering=false) at ../../kio/kio/kdirlister_p.h:343
#11 ~DirItem (this=0x2711540, __in_chrg=<optimized out>) at ../../kio/kio/kdirlister_p.h:331
#12 qDeleteAll<QHash<QString, KDirListerCache::DirItem*>::const_iterator> (end=..., begin=...) at /usr/include/qt4/QtCore/qalgorithms.h:322
#13 qDeleteAll<QHash<QString, KDirListerCache::DirItem*> > (c=...) at /usr/include/qt4/QtCore/qalgorithms.h:330
#14 KDirListerCache::~KDirListerCache (this=0x2688540, __in_chrg=<optimized out>) at ../../kio/kio/kdirlister.cpp:79
#15 0x00007ffaa4b274f9 in KDirListerCache::~KDirListerCache (this=0x2688540, __in_chrg=<optimized out>) at ../../kio/kio/kdirlister.cpp:87
#16 0x00007ffaa6be9509 in __run_exit_handlers (status=1, listp=0x7ffaa6f6c6c8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#17 0x00007ffaa6be9555 in __GI_exit (status=<optimized out>) at exit.c:104
#18 0x00007ffaa7e4d878 in qt_xio_errhandler () at kernel/qapplication_x11.cpp:783
#19 0x00007ffaa9956760 in KApplication::xioErrhandler (this=0x7fff0e5de330, dpy=0x129c440) at ../../kdeui/kernel/kapplication.cpp:419
#20 0x00007ffaa890e5ee in _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#21 0x00007ffaa890c76a in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#22 0x00007ffaa88f3346 in XGetWindowProperty () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#23 0x00007ffaa7e75a23 in GetMWMHints (display=<optimized out>, window=<optimized out>) at kernel/qwidget_x11.cpp:148
#24 0x00007ffaa7e778a8 in QWidgetPrivate::setConstraints_sys (this=this@entry=0x3d11ab0) at kernel/qwidget_x11.cpp:2696
#25 0x00007ffaa7e2e4d8 in QWidget::setMinimumSize (this=this@entry=0x37f5bb0, minw=170, minh=123) at kernel/qwidget.cpp:4007
#26 0x00007ffaa7e10422 in setMinimumSize (s=<synthetic pointer>, this=0x37f5bb0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:970
#27 QLayout::activate (this=0x2d12f20) at kernel/qlayout.cpp:1252
#28 0x00007ffaa7e33c8f in QWidget::adjustSize (this=this@entry=0x37f5bb0) at kernel/qwidget.cpp:8197
#29 0x00007ffaa7e358e0 in QWidget::setVisible (this=this@entry=0x37f5bb0, visible=visible@entry=true) at kernel/qwidget.cpp:7763
#30 0x00007ffaa828e4ee in QDialog::setVisible (this=0x37f5bb0, visible=<optimized out>) at dialogs/qdialog.cpp:749
#31 0x00007ffaa828dfa6 in show (this=0x37f5bb0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#32 QDialog::exec (this=0x37f5bb0) at dialogs/qdialog.cpp:553
#33 0x00007ffaa98caf82 in KMessageBox::createKMessageBox (dialog=dialog@entry=0x37f5bb0, icon=..., text=..., strlist=..., ask=..., checkboxReturn=checkboxReturn@entry=0x0, options=..., details=..., notifyType=notifyType@entry=QMessageBox::Critical) at ../../kdeui/dialogs/kmessagebox.cpp:344
#34 0x00007ffaa98cb1c1 in KMessageBox::createKMessageBox (dialog=dialog@entry=0x37f5bb0, icon=icon@entry=QMessageBox::Critical, text=..., strlist=..., ask=..., checkboxReturn=checkboxReturn@entry=0x0, options=..., details=...) at ../../kdeui/dialogs/kmessagebox.cpp:159
#35 0x00007ffaa98cb3d5 in KMessageBox::errorListWId (parent_id=50331903, text=..., strlist=..., caption=..., options=...) at ../../kdeui/dialogs/kmessagebox.cpp:854
#36 0x00007ffaa98cb4ea in KMessageBox::error (parent=<optimized out>, text=..., caption=..., options=...) at ../../kdeui/dialogs/kmessagebox.cpp:821
#37 0x00007ffa84716ea3 in ?? () from /usr/lib/libamarok-sqlcollection.so.1
#38 0x00007ffaa740cc1e in QObject::event (this=0x17785d0, e=<optimized out>) at kernel/qobject.cpp:1194
#39 0x00007ffaa7de6e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1296e90, receiver=receiver@entry=0x17785d0, e=e@entry=0x4087f40) at kernel/qapplication.cpp:4567
#40 0x00007ffaa7ded4a0 in QApplication::notify (this=this@entry=0x7fff0e5de330, receiver=receiver@entry=0x17785d0, e=e@entry=0x4087f40) at kernel/qapplication.cpp:4353
#41 0x00007ffaa9957baa in KApplication::notify (this=0x7fff0e5de330, receiver=0x17785d0, event=0x4087f40) at ../../kdeui/kernel/kapplication.cpp:311
#42 0x00007ffaa73f44dd in QCoreApplication::notifyInternal (this=0x7fff0e5de330, receiver=receiver@entry=0x17785d0, event=event@entry=0x4087f40) at kernel/qcoreapplication.cpp:953
#43 0x00007ffaa73f7b3d in sendEvent (event=0x4087f40, receiver=0x17785d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#44 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x11a51f0) at kernel/qcoreapplication.cpp:1577
#45 0x00007ffaa73f7fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#46 0x00007ffaa7421f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#47 postEventSourceDispatch (s=0x1297380) at kernel/qeventdispatcher_glib.cpp:287
#48 0x00007ffaa192be04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00007ffaa192c048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007ffaa192c0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007ffaa74217a1 in QEventDispatcherGlib::processEvents (this=0x11a6af0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#52 0x00007ffaa7e88bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#53 0x00007ffaa73f30af in QEventLoop::processEvents (this=this@entry=0x7fff0e5de200, flags=...) at kernel/qeventloop.cpp:149
#54 0x00007ffaa73f33a5 in QEventLoop::exec (this=this@entry=0x7fff0e5de200, flags=...) at kernel/qeventloop.cpp:204
#55 0x00007ffaa73f8b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#56 0x0000000000408393 in ?? ()
#57 0x00007ffaa6bceec5 in __libc_start_main (main=0x4018e0, argc=1, argv=0x7fff0e5de498, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0e5de488) at libc-start.c:287
#58 0x00000000004084b2 in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 333013.

Possible duplicates by query: bug 333013, bug 324786.

Reported using DrKonqi