Application: amarok (2.9.0)
KDE Platform Version: 4.14.38
Qt Version: 4.8.7
Operating System: Linux 4.15.0-118-generic x86_64
Distribution: Ubuntu 18.04.5 LTS

-- Information about the crash:
Amarok crashed during normal bootup. Turned on PC and prepared dinner, came back, awoke sleeping monitor and ended up with this error

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
_IO_vfprintf_internal (s=s@entry=0x7ffe87b2d1c0, format=format@entry=0x7f5535d597a5 "Connection is closed", ap=ap@entry=0x7ffe87b2d348) at vfprintf.c:1283
[Current thread is 1 (Thread 0x7f554dc1cb80 (LWP 2227))]

Thread 28 (Thread 0x7f54d1ffb700 (LWP 3817)):
#0  0x00007f554a83b8af in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007f554a81fce6 in __GI___poll (fds=0x7f54b4004330, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007f55423d65c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f55423d66dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f554b04022e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f554b00e12f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f554b00e495 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f554aefd549 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f554afee1c3 in  () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f554aeffe3c in  () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f5548eac6db in start_thread (arg=0x7f54d1ffb700) at pthread_create.c:463
#11 0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f54d27fc700 (LWP 2621)):
[KCrash Handler]
#6  0x00007f5520ad5a15 in  () at /usr/lib/libamarok-sqlcollection.so.1
#7  0x00007f554d5145b8 in AbstractDirectoryWatcher::run() () at /usr/lib/libamaroklib.so.1
#8  0x00007f5545ed4c8c in  () at /usr/lib/libthreadweaver.so.4
#9  0x00007f5545ed4ea5 in ThreadWeaver::Job::execute(ThreadWeaver::Thread*) () at /usr/lib/libthreadweaver.so.4
#10 0x00007f5545ed4533 in ThreadWeaver::Thread::run() () at /usr/lib/libthreadweaver.so.4
#11 0x00007f554aeffe3c in  () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#12 0x00007f5548eac6db in start_thread (arg=0x7f54d27fc700) at pthread_create.c:463
#13 0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f54d2ffd700 (LWP 2559)):
#0  0x00007f5548eb29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a807e08968) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5548eb29f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a807e08918, cond=0x55a807e08940) at pthread_cond_wait.c:502
#2  0x00007f5548eb29f3 in __pthread_cond_wait (cond=0x55a807e08940, mutex=0x55a807e08918) at pthread_cond_wait.c:655
#3  0x00007f55032b9510 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f5503441a9b in buf_resize_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5548eac6db in start_thread (arg=0x7f54d2ffd700) at pthread_create.c:463
#6  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f54d37fe700 (LWP 2558)):
#0  0x00007f5548eb2f85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f54d37fd7a0, expected=0, futex_word=0x55a8085b94e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  0x00007f5548eb2f85 in __pthread_cond_wait_common (abstime=0x7f54d37fd7a0, mutex=0x55a8085b9498, cond=0x55a8085b94c0) at pthread_cond_wait.c:539
#2  0x00007f5548eb2f85 in __pthread_cond_timedwait (cond=0x55a8085b94c0, mutex=0x55a8085b9498, abstime=0x7f54d37fd7a0) at pthread_cond_wait.c:667
#3  0x00007f55032b93e2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55032b9601 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f55033db808 in ib_wqueue_timedwait(ib_wqueue_t*, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f55034f0ee3 in fts_optimize_thread(void*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#7  0x00007f5548eac6db in start_thread (arg=0x7f54d37fe700) at pthread_create.c:463
#8  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f54d3fff700 (LWP 2556)):
#0  0x00007f5548eb2f85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f54d3ffe920, expected=0, futex_word=0x55a80857f428) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  0x00007f5548eb2f85 in __pthread_cond_wait_common (abstime=0x7f54d3ffe920, mutex=0x55a80857f3d8, cond=0x55a80857f400) at pthread_cond_wait.c:539
#2  0x00007f5548eb2f85 in __pthread_cond_timedwait (cond=0x55a80857f400, mutex=0x55a80857f3d8, abstime=0x7f54d3ffe920) at pthread_cond_wait.c:667
#3  0x00007f55032b93e2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55032b9601 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f55034a6456 in dict_stats_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54d3fff700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f54e4ff9700 (LWP 2555)):
#0  0x00007f5548eb29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a807e08848) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5548eb29f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a807e087f8, cond=0x55a807e08820) at pthread_cond_wait.c:502
#2  0x00007f5548eb29f3 in __pthread_cond_wait (cond=0x55a807e08820, mutex=0x55a807e087f8) at pthread_cond_wait.c:655
#3  0x00007f55032b9510 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f550344da0a in buf_dump_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5548eac6db in start_thread (arg=0x7f54e4ff9700) at pthread_create.c:463
#6  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f54e57fa700 (LWP 2450)):
#0  0x00007f5548eb29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a807e08698) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5548eb29f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a807e08648, cond=0x55a807e08670) at pthread_cond_wait.c:502
#2  0x00007f5548eb29f3 in __pthread_cond_wait (cond=0x55a807e08670, mutex=0x55a807e08648) at pthread_cond_wait.c:655
#3  0x00007f55032b9510 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f5503374216 in srv_worker_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5548eac6db in start_thread (arg=0x7f54e57fa700) at pthread_create.c:463
#6  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f54e5ffb700 (LWP 2449)):
#0  0x00007f5548eb29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a807e08608) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5548eb29f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a807e085b8, cond=0x55a807e085e0) at pthread_cond_wait.c:502
#2  0x00007f5548eb29f3 in __pthread_cond_wait (cond=0x55a807e085e0, mutex=0x55a807e085b8) at pthread_cond_wait.c:655
#3  0x00007f55032b9510 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f5503374216 in srv_worker_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5548eac6db in start_thread (arg=0x7f54e5ffb700) at pthread_create.c:463
#6  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f54e67fc700 (LWP 2448)):
#0  0x00007f5548eb29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a807e08578) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5548eb29f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a807e08528, cond=0x55a807e08550) at pthread_cond_wait.c:502
#2  0x00007f5548eb29f3 in __pthread_cond_wait (cond=0x55a807e08550, mutex=0x55a807e08528) at pthread_cond_wait.c:655
#3  0x00007f55032b9510 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f5503374216 in srv_worker_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5548eac6db in start_thread (arg=0x7f54e67fc700) at pthread_create.c:463
#6  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f54e6ffd700 (LWP 2447)):
#0  0x00007f5548eb29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a807e084e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5548eb29f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a807e08498, cond=0x55a807e084c0) at pthread_cond_wait.c:502
#2  0x00007f5548eb29f3 in __pthread_cond_wait (cond=0x55a807e084c0, mutex=0x55a807e08498) at pthread_cond_wait.c:655
#3  0x00007f55032b9510 in os_event::wait_low(long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f5503376510 in srv_purge_coordinator_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5548eac6db in start_thread (arg=0x7f54e6ffd700) at pthread_create.c:463
#6  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f54e77fe700 (LWP 2446)):
#0  0x00007f554a7efa30 in __GI___nanosleep (requested_time=0x7f54e77fd9c0, remaining=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x00007f55032c9d8f in os_thread_sleep(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f5503378afb in srv_master_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f5548eac6db in start_thread (arg=0x7f54e77fe700) at pthread_create.c:463
#4  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f54e7fff700 (LWP 2445)):
#0  0x00007f5548eb2f85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f54e7ffe9b0, expected=0, futex_word=0x55a807e087b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  0x00007f5548eb2f85 in __pthread_cond_wait_common (abstime=0x7f54e7ffe9b0, mutex=0x55a807e08768, cond=0x55a807e08790) at pthread_cond_wait.c:539
#2  0x00007f5548eb2f85 in __pthread_cond_timedwait (cond=0x55a807e08790, mutex=0x55a807e08768, abstime=0x7f54e7ffe9b0) at pthread_cond_wait.c:667
#3  0x00007f55032b93e2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55032b9601 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f5503373275 in srv_monitor_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54e7fff700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f54ecb06700 (LWP 2444)):
#0  0x00007f5548eb2f85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f54ecb05800, expected=0, futex_word=0x55a807e08728) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  0x00007f5548eb2f85 in __pthread_cond_wait_common (abstime=0x7f54ecb05800, mutex=0x55a807e086d8, cond=0x55a807e08700) at pthread_cond_wait.c:539
#2  0x00007f5548eb2f85 in __pthread_cond_timedwait (cond=0x55a807e08700, mutex=0x55a807e086d8, abstime=0x7f54ecb05800) at pthread_cond_wait.c:667
#3  0x00007f55032b93e2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55032b9601 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f55033773b2 in srv_error_monitor_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54ecb06700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f54ed307700 (LWP 2443)):
#0  0x00007f5548eb2f85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f54ed306910, expected=0, futex_word=0x55a80855b198) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  0x00007f5548eb2f85 in __pthread_cond_wait_common (abstime=0x7f54ed306910, mutex=0x55a80855b148, cond=0x55a80855b170) at pthread_cond_wait.c:539
#2  0x00007f5548eb2f85 in __pthread_cond_timedwait (cond=0x55a80855b170, mutex=0x55a80855b148, abstime=0x7f54ed306910) at pthread_cond_wait.c:667
#3  0x00007f55032b93e2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55032b9601 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550329733a in lock_wait_timeout_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54ed307700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f54edd0d700 (LWP 2435)):
#0  0x00007f5548eb2f85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f54edd0c760, expected=0, futex_word=0x55a807e088dc) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  0x00007f5548eb2f85 in __pthread_cond_wait_common (abstime=0x7f54edd0c760, mutex=0x55a807e08888, cond=0x55a807e088b0) at pthread_cond_wait.c:539
#2  0x00007f5548eb2f85 in __pthread_cond_timedwait (cond=0x55a807e088b0, mutex=0x55a807e08888, abstime=0x7f54edd0c760) at pthread_cond_wait.c:667
#3  0x00007f55032b93e2 in os_event::timed_wait(timespec const*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55032b9601 in os_event::wait_time_low(unsigned long, long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f55034577a9 in buf_flush_page_cleaner_coordinator () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54edd0d700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f54ee50e700 (LWP 2434)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54ee50e700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f54eed0f700 (LWP 2433)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54eed0f700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f54ef510700 (LWP 2432)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54ef510700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f54efd11700 (LWP 2431)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54efd11700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f54f0512700 (LWP 2430)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54f0512700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f54f0d13700 (LWP 2429)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54f0d13700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f54f1514700 (LWP 2428)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54f1514700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f54f1d15700 (LWP 2427)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54f1d15700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f54f2516700 (LWP 2426)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54f2516700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f54f2d17700 (LWP 2425)):
#0  0x00007f550231a63a in  () at /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00007f55032c04c1 in LinuxAIOHandler::collect() () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f55032c0ed2 in LinuxAIOHandler::poll(fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#3  0x00007f55032c83fd in os_aio_handler(unsigned long, fil_node_t**, void**, IORequest*) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#4  0x00007f55034af8ef in fil_aio_wait(unsigned long) () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#5  0x00007f550337a2f8 in io_handler_thread () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#6  0x00007f5548eac6db in start_thread (arg=0x7f54f2d17700) at pthread_create.c:463
#7  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f54ff37f700 (LWP 2419)):
#0  0x00007f554a74b31c in __GI___sigtimedwait (set=<optimized out>, info=0x7f54ff37ea00, timeout=0x0) at ../sysdeps/unix/sysv/linux/sigtimedwait.c:42
#1  0x00007f5502cac0bb in  () at /usr/lib/kde4/amarok_storage-mysqlestorage.so
#2  0x00007f5548eac6db in start_thread (arg=0x7f54ff37f700) at pthread_create.c:463
#3  0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5522f2f700 (LWP 2415)):
#0  0x00007f55349aad90 in pa_queue_pop () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#1  0x00007f55349a97e6 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f55349aa798 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#3  0x00007f55349aaab9 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#4  0x00007f55349ab33f in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#5  0x00007f55413fa108 in pa_mainloop_dispatch () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f55413fa4de in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f55413fa560 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#8  0x00007f55414083c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#9  0x00007f55349bb318 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#10 0x00007f5548eac6db in start_thread (arg=0x7f5522f2f700) at pthread_create.c:463
#11 0x00007f554a82ca3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f554dc1cb80 (LWP 2227)):
#0  0x00007f554a76645c in _IO_vfprintf_internal (s=s@entry=0x7ffe87b2d1c0, format=format@entry=0x7f5535d597a5 "Connection is closed", ap=ap@entry=0x7ffe87b2d348) at vfprintf.c:1283
#1  0x00007f554a83d319 in ___vsnprintf_chk (s=0x7ffe87b2d360 "", maxlen=<optimized out>, flags=1, slen=<optimized out>, format=0x7f5535d597a5 "Connection is closed", args=0x7ffe87b2d348) at vsnprintf_chk.c:63
#2  0x00007f5535d55bf3 in _dbus_printf_string_upper_bound () at /lib/x86_64-linux-gnu/libdbus-1.so.3
#3  0x00007f5535d515bc in _dbus_string_append_printf_valist () at /lib/x86_64-linux-gnu/libdbus-1.so.3
#4  0x00007f5535d37fd3 in _dbus_set_error_valist () at /lib/x86_64-linux-gnu/libdbus-1.so.3
#5  0x00007f5535d3813f in dbus_set_error () at /lib/x86_64-linux-gnu/libdbus-1.so.3
#6  0x00007f5535d34b12 in dbus_connection_send_with_reply_and_block () at /lib/x86_64-linux-gnu/libdbus-1.so.3
#7  0x00007f554501e9f0 in  () at /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
#8  0x00007f55450084ab in QDBusConnection::call(QDBusMessage const&, QDBus::CallMode, int) const () at /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
#9  0x00007f5545316e68 in  () at /usr/lib/libsolid.so.4
#10 0x00007f5545317ab6 in  () at /usr/lib/libsolid.so.4
#11 0x00007f554531536c in  () at /usr/lib/libsolid.so.4
#12 0x00007f5545316b45 in  () at /usr/lib/libsolid.so.4
#13 0x00007f55452b6586 in Solid::Device::listFromType(Solid::DeviceInterface::Type const&, QString const&) () at /usr/lib/libsolid.so.4
#14 0x00007f554d61607d in MediaDeviceCache::refreshCache() () at /usr/lib/libamaroklib.so.1
#15 0x00007f554d61d35f in MediaDeviceMonitor::getDevices() () at /usr/lib/libamaroklib.so.1
#16 0x00007f554d61e24f in MediaDeviceMonitor::checkDevicesFor(ConnectionAssistant*) () at /usr/lib/libamaroklib.so.1
#17 0x00007f554d61e39b in MediaDeviceMonitor::registerDeviceType(ConnectionAssistant*) () at /usr/lib/libamaroklib.so.1
#18 0x00007f554d429b5e in Collections::MediaDeviceCollectionFactoryBase::init() () at /usr/lib/libamaroklib.so.1
#19 0x00007f554d621ae8 in Plugins::PluginManager::checkPluginEnabledStates() () at /usr/lib/libamaroklib.so.1
#20 0x00007f554d6227c6 in Plugins::PluginManager::PluginManager(QObject*) () at /usr/lib/libamaroklib.so.1
#21 0x00007f554d6228d5 in Plugins::PluginManager::instance() () at /usr/lib/libamaroklib.so.1
#22 0x00007f554d6122d7 in MainWindow::MainWindow() () at /usr/lib/libamaroklib.so.1
#23 0x00007f554d5f8f87 in App::continueInit() () at /usr/lib/libamaroklib.so.1
#24 0x00007f554d5fa3ac in App::App() () at /usr/lib/libamaroklib.so.1
#25 0x000055a806129da3 in  ()
#26 0x00007f554a72cb97 in __libc_start_main (main=0x55a806123980, argc=3, argv=0x7ffe87b2e818, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe87b2e808) at ../csu/libc-start.c:310
#27 0x000055a80612b9da in _start ()

Reported using DrKonqi