Application: amarok (2.4.3)
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
Title explains it all. I had made a lot of changes to my music library (in terms of tags and filenames) and Amarok said it was scanning library. It stopped, but didn't show the updated information, so I closed it and opened it again, and it crashed, and now crashes every time I open it. Perhaps I stopped it in the middle of scanning the library? Alternately, the library changes could be a red herring.

Amarok opens as far as displaying the splash screen and then the application itself - I see my library and everything for a split second before it crashes.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f41daeb57a0 (LWP 22708))]

Thread 9 (Thread 0x7f41bc6ec700 (LWP 22711)):
#0  0x00007f41d75f9f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f41cf9e932f in ?? () from /usr/lib/libpulse.so.0
#2  0x00007f41cf9db116 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#3  0x00007f41cf9db749 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#4  0x00007f41cf9db800 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#5  0x00007f41cf9e92df in ?? () from /usr/lib/libpulse.so.0
#6  0x00007f41cb2e5a88 in ?? () from /usr/lib/libpulsecommon-0.9.22.so
#7  0x00007f41d3e20d8c in start_thread (arg=0x7f41bc6ec700) at pthread_create.c:304
#8  0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f41b2da0700 (LWP 22715)):
#0  0x00007f41d75f9f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f41d237e104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f41d237e639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f41d7f57446 in QEventDispatcherGlib::processEvents (this=0x2332a70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f41d7f2b882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f41d7f2babc in QEventLoop::exec (this=0x7f41b2d9fdb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f41d7e42924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f41d7f0dc2f in QInotifyFileSystemWatcherEngine::run (this=0x23152d0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f41d7e45175 in QThreadPrivate::start (arg=0x23152d0) at thread/qthread_unix.cpp:320
#9  0x00007f41d3e20d8c in start_thread (arg=0x7f41b2da0700) at pthread_create.c:304
#10 0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f41aafbf700 (LWP 22716)):
#0  __libc_enable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:66
#1  0x00007f41d75f9ee8 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:85
#2  0x00007f41d237e104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f41d237e639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f41d7f57446 in QEventDispatcherGlib::processEvents (this=0x29dbfd0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f41d7f2b882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f41d7f2babc in QEventLoop::exec (this=0x7f41aafbedb0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f41d7e42924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#8  0x00007f41d7f0dc2f in QInotifyFileSystemWatcherEngine::run (this=0x29db380) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f41d7e45175 in QThreadPrivate::start (arg=0x29db380) at thread/qthread_unix.cpp:320
#10 0x00007f41d3e20d8c in start_thread (arg=0x7f41aafbf700) at pthread_create.c:304
#11 0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f41aa5a1700 (LWP 22717)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f41d7e4582b in wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f41d53bb704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2a8be00, th=0x2a2e710) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f41d53bdd73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2a2e340, th=0x2a2e710) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f41d53bcb8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f41aa5a0e00, parent=0x2a8be00, th=0x2a2e710) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f41d53bcc1b in ThreadWeaver::Thread::run (this=0x2a2e710) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f41d7e45175 in QThreadPrivate::start (arg=0x2a2e710) at thread/qthread_unix.cpp:320
#8  0x00007f41d3e20d8c in start_thread (arg=0x7f41aa5a1700) at pthread_create.c:304
#9  0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f41a9da0700 (LWP 22718)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f41d7e4582b in wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f41d53bb704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2a8be00, th=0x29f1b30) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f41d53bdd73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2a2e340, th=0x29f1b30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f41d53bcb8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f41a9d9fe00, parent=0x2a8be00, th=0x29f1b30) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f41d53bcc1b in ThreadWeaver::Thread::run (this=0x29f1b30) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f41d7e45175 in QThreadPrivate::start (arg=0x29f1b30) at thread/qthread_unix.cpp:320
#8  0x00007f41d3e20d8c in start_thread (arg=0x7f41a9da0700) at pthread_create.c:304
#9  0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f41a959f700 (LWP 22719)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f41d7e4582b in wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f41d53bb704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2a8be00, th=0x2a351d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f41d53bdd73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2a2e340, th=0x2a351d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f41d53bcb8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f41a959ee00, parent=0x2a8be00, th=0x2a351d0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f41d53bcc1b in ThreadWeaver::Thread::run (this=0x2a351d0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f41d7e45175 in QThreadPrivate::start (arg=0x2a351d0) at thread/qthread_unix.cpp:320
#8  0x00007f41d3e20d8c in start_thread (arg=0x7f41a959f700) at pthread_create.c:304
#9  0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f41a8d9e700 (LWP 22720)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f41d7e4582b in wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2a2e220, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f41d53bb704 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2a8be00, th=0x29ec350) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f41d53bdd73 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2a2e340, th=0x29ec350) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f41d53bcb8f in ThreadWeaver::ThreadRunHelper::run (this=0x7f41a8d9de00, parent=0x2a8be00, th=0x29ec350) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f41d53bcc1b in ThreadWeaver::Thread::run (this=0x29ec350) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f41d7e45175 in QThreadPrivate::start (arg=0x29ec350) at thread/qthread_unix.cpp:320
#8  0x00007f41d3e20d8c in start_thread (arg=0x7f41a8d9e700) at pthread_create.c:304
#9  0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f419e33d700 (LWP 22723)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f41d44072a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f41d4720180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f41d44072d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f41d472e254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f41d3e20d8c in start_thread (arg=0x7f419e33d700) at pthread_create.c:304
#4  0x00007f41d760704d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f41daeb57a0 (LWP 22708)):
[KCrash Handler]
#6  isEmpty (this=<value optimized out>) at /usr/include/qt4/QtCore/qlist.h:95
#7  isEmpty (this=<value optimized out>) at /usr/include/qt4/QtCore/qlist.h:139
#8  CollectionTreeItem::row (this=<value optimized out>) at ../../src/browsers/CollectionTreeItem.cpp:226
#9  0x00007f41d98a14d6 in CollectionTreeItemModelBase::handleNormalQueryResult (this=0x2e49950, qm=<value optimized out>, dataList=...) at ../../src/browsers/CollectionTreeItemModelBase.cpp:874
#10 0x00007f41d989ecb2 in CollectionTreeItemModelBase::newResultReady (this=0x2e49950, res=<value optimized out>) at ../../src/browsers/CollectionTreeItemModelBase.cpp:700
#11 0x00007f41d98a10c4 in CollectionTreeItemModelBase::qt_metacall (this=0x2e49950, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7f41ac5804f0) at ./CollectionTreeItemModelBase.moc:107
#12 0x00007f41d7f4049a in QObject::event (this=0x2e49950, e=<value optimized out>) at kernel/qobject.cpp:1226
#13 0x00007f41d88e69f4 in QApplicationPrivate::notify_helper (this=0x1d0efe0, receiver=0x2e49950, e=0x7f41ac580530) at kernel/qapplication.cpp:4462
#14 0x00007f41d88eb3ba in QApplication::notify (this=<value optimized out>, receiver=0x2e49950, e=0x7f41ac580530) at kernel/qapplication.cpp:4341
#15 0x00007f41da8bc796 in KApplication::notify (this=0x7fff831e3b90, receiver=0x2e49950, event=0x7f41ac580530) at ../../kdeui/kernel/kapplication.cpp:311
#16 0x00007f41d7f2c49c in QCoreApplication::notifyInternal (this=0x7fff831e3b90, receiver=0x2e49950, event=0x7f41ac580530) at kernel/qcoreapplication.cpp:731
#17 0x00007f41d7f2fc25 in sendEvent (receiver=0x0, event_type=0, data=0x1b5eb00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#18 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1b5eb00) at kernel/qcoreapplication.cpp:1372
#19 0x00007f41d7f57253 in sendPostedEvents (s=0x1d0ef00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#20 postEventSourceDispatch (s=0x1d0ef00) at kernel/qeventdispatcher_glib.cpp:277
#21 0x00007f41d237dbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f41d237e3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f41d237e639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f41d7f573ef in QEventDispatcherGlib::processEvents (this=0x1b5e2e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#25 0x00007f41d89904de in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#26 0x00007f41d7f2b882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#27 0x00007f41d7f2babc in QEventLoop::exec (this=0x7fff831e3b10, flags=...) at kernel/qeventloop.cpp:201
#28 0x00007f41d7f2fecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#29 0x000000000040ef0e in main (argc=1, argv=0x7fff831e6198) at ../../src/main.cpp:289

This bug may be a duplicate of or related to bug 282268.

Possible duplicates by query: bug 282268.

Reported using DrKonqi