Amarok (amarok-2.8.90-8.fc25.x86_64) got stuck, I attach gdb trace


gdb output
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
__lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
135     2:      movl    %edx, %eax
(gdb) bt
#0  0x00007f4112c5b38d in __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f4112c54eca in __GI___pthread_mutex_lock (mutex=0x559e5994aa50) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007f410d7a6254 in FAMPending (fc=fc@entry=0x559e59915bf0) at gam_api.c:1340
#3  0x00007f4115f79c08 in KDirWatchPrivate::famEventReceived() (this=0x559e59915b60) at /usr/src/debug/kdelibs-4.14.26/kdecore/io/kdirwatch.cpp:1525
#4  0x00007f4114de0090 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x559e5994aa80, m=m@entry=0x7f411512fcc0 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca47f3f40) at kernel/qobject.cpp:3567
#5  0x00007f4114e3123e in QSocketNotifier::activated(int) (this=this@entry=0x559e5994aa80, _t1=<optimized out>) at .moc/release-shared/moc_qsocketnotifier.cpp:102
#6  0x00007f4114dea7ab in QSocketNotifier::event(QEvent*) (this=0x559e5994aa80, e=0x7ffca47f4220) at kernel/qsocketnotifier.cpp:316
#7  0x00007f4115329ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x559e59259210, receiver=receiver@entry=0x559e5994aa80, e=e@entry=0x7ffca47f4220) at kernel/qapplication.cpp:4565
#8  0x00007f4115330dcc in QApplication::notify(QObject*, QEvent*) (this=this@entry=0x7ffca47f45c0, receiver=receiver@entry=0x559e5994aa80, e=e@entry=0x7ffca47f4220)
    at kernel/qapplication.cpp:4351
#9  0x00007f4116594c8a in KApplication::notify(QObject*, QEvent*) (this=0x7ffca47f45c0, receiver=0x559e5994aa80, event=0x7ffca47f4220)
    at /usr/src/debug/kdelibs-4.14.26/kdeui/kernel/kapplication.cpp:311
#10 0x00007f4114dcbeed in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffca47f45c0, receiver=0x559e5994aa80, event=event@entry=0x7ffca47f4220)
    at kernel/qcoreapplication.cpp:955
#11 0x00007f4114dfca42 in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffca47f4220, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#12 0x00007f4114dfca42 in socketNotifierSourceDispatch(GSource*, GSourceFunc, gpointer) (source=0x559e59202f10) at kernel/qeventdispatcher_glib.cpp:117
#13 0x00007f410d2d7e42 in g_main_dispatch (context=0x559e592595b0) at gmain.c:3203
#14 0x00007f410d2d7e42 in g_main_context_dispatch (context=context@entry=0x559e592595b0) at gmain.c:3856
#15 0x00007f410d2d81c0 in g_main_context_iterate (context=context@entry=0x559e592595b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at gmain.c:3929
#16 0x00007f410d2d826c in g_main_context_iteration (context=0x559e592595b0, may_block=may_block@entry=1) at gmain.c:3990
---Type <return> to continue, or q <return> to quit---
#17 0x00007f4114dfc45e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x559e5914a8f0, flags=...)
    at kernel/qeventdispatcher_glib.cpp:450
#18 0x00007f41153d25a6 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...)
    at kernel/qguieventdispatcher_glib.cpp:207
#19 0x00007f4114dca7bf in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffca47f4470, flags=...) at kernel/qeventloop.cpp:149
#20 0x00007f4114dcab25 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffca47f4470, flags=...) at kernel/qeventloop.cpp:204
#21 0x00007f4114dd0779 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1227
#22 0x0000559e58aa8e45 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/amarok-2.8.90/src/main.cpp:329