Application: amarok (2.8.0)
KDE Platform Version: 4.14.16
Qt Version: 4.8.7
Operating System: Linux 4.10.0-33-generic x86_64
Distribution: KDE neon LTS User Edition 5.8

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

I closed Amarok by Amarok > Quit
This occurs ocasionally when I close Amarok

The crash can be reproduced sometimes.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
_IO_flush_all_lockp (do_lock=do_lock@entry=0) at genops.c:779
[Current thread is 1 (Thread 0x7fb47fc0a940 (LWP 1724))]

Thread 37 (Thread 0x7fb3dbfff700 (LWP 6475)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb474a8e6c1 in  () at /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb474d9e876 in  () at /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb3dbfff700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7fb3e18c9700 (LWP 1777)):
#0  0x00007fb47c85630d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb47c85625a in __sleep (seconds=0) at ../sysdeps/posix/sleep.c:55
#2  0x00007fb47ba1adc5 in  () at /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fb47ba1ae49 in  () at /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#4  0x00007fb47b4276ba in start_thread (arg=0x7fb3e18c9700) at pthread_create.c:333
#5  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7fb3e358c700 (LWP 1774)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb474d6c2dd in  () at /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb474d6c339 in  () at /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb3e358c700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7fb3f97fa700 (LWP 1773)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x7fb3ec092270) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x7fb3ec092270, previous=0x0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46c9ac in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x7fb3ec092270, previous=0x7fb40007f3f0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x7fb3ec092270) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#7  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x7fb3ec092270) at thread/qthread_unix.cpp:352
#8  0x00007fb47b4276ba in start_thread (arg=0x7fb3f97fa700) at pthread_create.c:333
#9  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fb3f9ffb700 (LWP 1772)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x7fb3ec0891f0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x7fb3ec0891f0, previous=0x3077dd40) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x7fb3ec0891f0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#6  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x7fb3ec0891f0) at thread/qthread_unix.cpp:352
#7  0x00007fb47b4276ba in start_thread (arg=0x7fb3f9ffb700) at pthread_create.c:333
#8  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fb3fa7fc700 (LWP 1771)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x7fb3ec07ea90) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x7fb3ec07ea90, previous=0x30fa7a00) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x7fb3ec07ea90) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#6  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x7fb3ec07ea90) at thread/qthread_unix.cpp:352
#7  0x00007fb47b4276ba in start_thread (arg=0x7fb3fa7fc700) at pthread_create.c:333
#8  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fb3faffd700 (LWP 1770)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x2d855e90) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2d855e90, previous=0x7fb3e80052c0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x2d855e90) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#6  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x2d855e90) at thread/qthread_unix.cpp:352
#7  0x00007fb47b4276ba in start_thread (arg=0x7fb3faffd700) at pthread_create.c:333
#8  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fb3fb7fe700 (LWP 1769)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x2d80ba90) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2d80ba90, previous=0x0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46c9ac in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2d80ba90, previous=0x7fb400038720) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x2d80ba90) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#7  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x2d80ba90) at thread/qthread_unix.cpp:352
#8  0x00007fb47b4276ba in start_thread (arg=0x7fb3fb7fe700) at pthread_create.c:333
#9  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fb3fbfff700 (LWP 1768)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x2d806500) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2d806500, previous=0x30cd7410) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x2d806500) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#6  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x2d806500) at thread/qthread_unix.cpp:352
#7  0x00007fb47b4276ba in start_thread (arg=0x7fb3fbfff700) at pthread_create.c:333
#8  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fb41d4dd700 (LWP 1767)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x2d777a00) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2d777a00, previous=0x0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46c9ac in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2d777a00, previous=0x3077bde0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x2d777a00) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#7  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x2d777a00) at thread/qthread_unix.cpp:352
#8  0x00007fb47b4276ba in start_thread (arg=0x7fb41d4dd700) at pthread_create.c:333
#9  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fb41e7fc700 (LWP 1766)):
#0  0x00007fb47d092188 in QTimerInfoList::timerWait(timeval&) (this=0x7fb408002ce0) at ../../include/QtCore/../../src/corelib/tools/qlist.h:101
#1  0x00007fb47d092188 in QTimerInfoList::timerWait(timeval&) (this=0x7fb408002ce0) at ../../include/QtCore/../../src/corelib/tools/qlist.h:269
#2  0x00007fb47d092188 in QTimerInfoList::timerWait(timeval&) (this=0x7fb408002ce0, tm=...) at kernel/qeventdispatcher_unix.cpp:465
#3  0x00007fb47d09099c in timerSourcePrepareHelper(GTimerSource*, gint*) (src=<optimized out>, timeout=0x7fb41e7fba74) at kernel/qeventdispatcher_glib.cpp:143
#4  0x00007fb47d090a65 in timerSourcePrepare(GSource*, gint*) (source=<optimized out>, timeout=timeout@entry=0x7fb41e7fba74) at kernel/qeventdispatcher_glib.cpp:176
#5  0x00007fb4769ff91d in g_main_context_prepare (context=context@entry=0x7fb4080009a0, priority=priority@entry=0x7fb41e7fbb00) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3442
#6  0x00007fb476a002bb in g_main_context_iterate (context=context@entry=0x7fb4080009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3820
#7  0x00007fb476a0049c in g_main_context_iteration (context=0x7fb4080009a0, may_block=may_block@entry=1) at /build/glib2.0-prJhLS/glib2.0-2.48.2/./glib/gmain.c:3901
#8  0x00007fb47d0912ce in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fb4080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#9  0x00007fb47d05f18f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fb41e7fbc40, flags=...) at kernel/qeventloop.cpp:149
#10 0x00007fb47d05f4f5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fb41e7fbc40, flags=...) at kernel/qeventloop.cpp:204
#11 0x00007fb47cf4e549 in QThread::exec() (this=this@entry=0x2d6d4590) at thread/qthread.cpp:538
#12 0x00007fb47d03f223 in QInotifyFileSystemWatcherEngine::run() (this=0x2d6d4590) at io/qfilesystemwatcher_inotify.cpp:265
#13 0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x2d6d4590) at thread/qthread_unix.cpp:352
#14 0x00007fb47b4276ba in start_thread (arg=0x7fb41e7fc700) at pthread_create.c:333
#15 0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fb41effd700 (LWP 1765)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2d6ca5e0) at thread/qwaitcondition_unix.cpp:86
#2  0x00007fb47cf513a6 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x2d6ca4e8, mutex=0x2753640, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb47a469c9c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) (this=0x2d6ca4c0, th=0x2754230) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007fb47a46c993 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) (this=0x27538d0, th=0x2754230, previous=0x2d6c9140) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007fb47a46b4ef in ThreadWeaver::Thread::run() (this=0x2754230) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/threadweaver/Weaver/Thread.cpp:98
#6  0x00007fb47cf50e3c in QThreadPrivate::start(void*) (arg=0x2754230) at thread/qthread_unix.cpp:352
#7  0x00007fb47b4276ba in start_thread (arg=0x7fb41effd700) at pthread_create.c:333
#8  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fb41f7fe700 (LWP 1764)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb45644b106 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4565ac7f6 in buf_resize_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb41f7fe700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fb41ffff700 (LWP 1763)):
#0  0x00007fb47b42d709 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb45644afc2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb45644b241 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb45667ea8a in ib_wqueue_timedwait(ib_wqueue_t*, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564ed342 in fts_optimize_thread(void*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb47b4276ba in start_thread (arg=0x7fb41ffff700) at pthread_create.c:333
#6  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fb42cff9700 (LWP 1762)):
#0  0x00007fb47b42d709 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb45644afc2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb45644b241 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb45661b649 in dict_stats_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb47b4276ba in start_thread (arg=0x7fb42cff9700) at pthread_create.c:333
#5  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fb42d7fa700 (LWP 1761)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb45644b106 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb456498c74 in buf_dump_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb42d7fa700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fb42dffb700 (LWP 1760)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb45644b106 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562d931c in srv_worker_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb42dffb700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fb42e7fc700 (LWP 1759)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb45644b106 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562d931c in srv_worker_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb42e7fc700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fb42effd700 (LWP 1758)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb45644b106 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562d931c in srv_worker_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb42effd700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fb42f7fe700 (LWP 1757)):
#0  0x00007fb47b42d360 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb45644b106 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562dc25c in srv_purge_coordinator_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb47b4276ba in start_thread (arg=0x7fb42f7fe700) at pthread_create.c:333
#4  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fb42ffff700 (LWP 1756)):
[KCrash Handler]
#6  0x00007fb47c82958a in __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:31
#7  0x00007fb45644c718 in ut_new_get_key_by_file(char const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#8  0x00007fb45649c53e in ut_allocator<char>::get_mem_key(char const*) const [clone .isra.90] () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#9  0x00007fb45649ec0c in ut_allocator<unsigned char>::allocate(unsigned long, unsigned char const*, char const*, bool, bool) [clone .constprop.153] () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#10 0x00007fb4564a9606 in fil_flush_file_spaces(fil_type_t) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#11 0x00007fb45653f135 in log_checkpoint(bool, bool) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#12 0x00007fb4562df83b in srv_master_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#13 0x00007fb47b4276ba in start_thread (arg=0x7fb42ffff700) at pthread_create.c:333
#14 0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fb434a26700 (LWP 1755)):
#0  0x00007fb47b42d709 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb45644afc2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb45644b241 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562d7baf in srv_monitor_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb47b4276ba in start_thread (arg=0x7fb434a26700) at pthread_create.c:333
#5  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fb435227700 (LWP 1754)):
#0  0x00007fb47b42d709 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb45644afc2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb45644b241 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562dd720 in srv_error_monitor_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb47b4276ba in start_thread (arg=0x7fb435227700) at pthread_create.c:333
#5  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fb435a28700 (LWP 1753)):
#0  0x00007fb47b42d709 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb45644afc2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb45644b241 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb45666bf16 in lock_wait_timeout_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb47b4276ba in start_thread (arg=0x7fb435a28700) at pthread_create.c:333
#5  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fb43642e700 (LWP 1750)):
#0  0x00007fb47b42d709 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fb45644afc2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb45644b241 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562c891f in buf_flush_page_cleaner_coordinator () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb47b4276ba in start_thread (arg=0x7fb43642e700) at pthread_create.c:333
#5  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fb436c2f700 (LWP 1749)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb436c2f700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fb437430700 (LWP 1748)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb437430700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fb437c31700 (LWP 1747)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb437c31700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fb438432700 (LWP 1746)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb438432700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fb438c33700 (LWP 1745)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb438c33700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fb439434700 (LWP 1744)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb439434700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fb439c35700 (LWP 1743)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb439c35700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fb43a436700 (LWP 1742)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb43a436700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fb43ac37700 (LWP 1741)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb43ac37700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fb43b438700 (LWP 1740)):
#0  0x00007fb454fd564a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007fb4562a9078 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb4562afd0c in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#3  0x00007fb4562b348d in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#4  0x00007fb4564a20df in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#5  0x00007fb4565d4830 in io_handler_thread () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#6  0x00007fb47b4276ba in start_thread (arg=0x7fb43b438700) at pthread_create.c:333
#7  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fb446b48700 (LWP 1739)):
#0  0x00007fb47c7c0b26 in __GI___sigwaitinfo (set=<optimized out>, info=0x7fb446b47c60) at ../sysdeps/unix/sysv/linux/sigwaitinfo.c:56
#1  0x00007fb455ce27ab in timer_notify_thread_func () at /usr/lib/kde4/amarok_collection-mysqlecollection.so
#2  0x00007fb47b4276ba in start_thread (arg=0x7fb446b48700) at pthread_create.c:333
#3  0x00007fb47c8913dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb47fc0a940 (LWP 1724)):
#0  0x00007fb47c806165 in _IO_flush_all_lockp (do_lock=do_lock@entry=0) at genops.c:779
#1  0x00007fb47c80632a in _IO_cleanup () at genops.c:951
#2  0x00007fb47c7c3f9b in __run_exit_handlers (status=0, listp=<optimized out>, run_list_atexit=run_list_atexit@entry=true) at exit.c:95
#3  0x00007fb47c7c4045 in __GI_exit (status=<optimized out>) at exit.c:104
#4  0x00007fb47c7aa837 in __libc_start_main (main=0x401940 <main(int, char**)>, argc=1, argv=0x7fffe3bcef68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe3bcef58) at ../csu/libc-start.c:325
#5  0x000000000040a299 in _start ()

Reported using DrKonqi