Bug 360447

Summary: Amarok is crashing when trying to fetch tags from MusicBrainz
Product: amarok Reporter: ukrkyi <ukrkyi>
Component: Metadata Editing and ReadingAssignee: Amarok Developers <amarok-bugs-dist>
Status: RESOLVED DUPLICATE    
Severity: crash CC: 123kash, magpiper
Priority: NOR Keywords: drkonqi
Version: 2.8.0   
Target Milestone: 2.9   
Platform: openSUSE RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: New crash information added by DrKonqi
New crash information added by DrKonqi
New crash information added by DrKonqi

Description ukrkyi 2016-03-12 19:32:04 UTC
Application: amarok (2.8.0)
KDE Platform Version: 4.14.17
Qt Version: 4.8.7
Operating System: Linux 4.4.3-1-default x86_64
Distribution: "openSUSE Tumbleweed (20160117) (x86_64)"

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

Opened song information and clicked on "fetch tags from musicbrains". Then, popup window has opened, and already started to show some information. On 50% Amarok had crashed.
This bug (for me) is reproduced only when trying to get tags for song "С.К.А.Й.  — Любов"

The crash can be reproduced every time.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f422192d900 (LWP 20756))]

Thread 15 (Thread 0x7f41f929a700 (LWP 20759)):
#0  0x00007f421e56947d in read () at /lib64/libc.so.6
#1  0x00007f420b928d91 in pa_read () at /usr/lib64/pulseaudio/libpulsecommon-8.0.so
#2  0x00007f421584eede in pa_mainloop_prepare () at /usr/lib64/libpulse.so.0
#3  0x00007f421584f8e0 in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#4  0x00007f421584f9a0 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#5  0x00007f421585d5e6 in  () at /usr/lib64/libpulse.so.0
#6  0x00007f420b955cc8 in  () at /usr/lib64/pulseaudio/libpulsecommon-8.0.so
#7  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f41dfc8e700 (LWP 20760)):
#0  0x00007f421d14d428 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f41f5a2c28a in  () at /usr/lib64/libmysqld.so.18
#2  0x00007f41f59f0a87 in  () at /usr/lib64/libmysqld.so.18
#3  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f41df458700 (LWP 20761)):
#0  0x00007f421d14d428 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34732 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f4221239d5f in AbstractDirectoryWatcher::run() () at /usr/lib64/libamaroklib.so.1
#3  0x00007f421a66a2f2 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66a4de in ThreadWeaver::Job::execute(ThreadWeaver::Thread*) () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a669c0b in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#7  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f41dec57700 (LWP 20762)):
#0  0x00007f4216e67540 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f4216e69938 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4216e6a1c3 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4216e6a39c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f421ed6827e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#5  0x00007f421ed38401 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#6  0x00007f421ed38715 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#7  0x00007f421ec31a59 in QThread::exec() () at /usr/lib64/libQtCore.so.4
#8  0x00007f421ed194e3 in  () at /usr/lib64/libQtCore.so.4
#9  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#10 0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f41de3fc700 (LWP 20763)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#6  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#7  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f41ddbfb700 (LWP 20764)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#7  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#8  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#9  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#10 0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#11 0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f41dd3fa700 (LWP 20765)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#7  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#8  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f41dcbf9700 (LWP 20766)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#7  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#8  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#9  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#10 0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#11 0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f41cffff700 (LWP 20767)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#7  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f41cf7fe700 (LWP 20768)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#7  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#8  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#9  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#10 0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f41ceffd700 (LWP 20769)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421ec34754 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQtCore.so.4
#2  0x00007f421a66845c in  () at /usr/lib64/libthreadweaver.so.4
#3  0x00007f421a66ae93 in  () at /usr/lib64/libthreadweaver.so.4
#4  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#5  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#6  0x00007f421a66aeac in  () at /usr/lib64/libthreadweaver.so.4
#7  0x00007f421a669b6f in ThreadWeaver::Thread::run() () at /usr/lib64/libthreadweaver.so.4
#8  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#9  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f41cdd8d700 (LWP 20770)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f4214b529e6 in WTF::TCMalloc_PageHeap::scavengerThread() () at /usr/lib64/libQtWebKit.so.4
#2  0x00007f4214b52a19 in  () at /usr/lib64/libQtWebKit.so.4
#3  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f41cca76700 (LWP 20773)):
#0  0x00007f4216e674b4 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f4216e69c5a in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f4216e6a238 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f4216e6a39c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f421ed6827e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#5  0x00007f421ed38401 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#6  0x00007f421ed38715 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#7  0x00007f421ec31a59 in QThread::exec() () at /usr/lib64/libQtCore.so.4
#8  0x00007f421ec3423c in  () at /usr/lib64/libQtCore.so.4
#9  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f41bfbbc700 (LWP 20774)):
#0  0x00007f421d14d07f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f421d734f4a in  () at /usr/lib64/libQtScript.so.4
#2  0x00007f421d734f79 in  () at /usr/lib64/libQtScript.so.4
#3  0x00007f421d1474a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f421e575ded in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f422192d900 (LWP 20756)):
[KCrash Handler]
#6  0x00007f421ec2fbf1 in QReadWriteLock::lockForRead() () at /usr/lib64/libQtCore.so.4
#7  0x00007f42213c5780 in  () at /usr/lib64/libamaroklib.so.1
#8  0x00007f42213cd0fc in  () at /usr/lib64/libamaroklib.so.1
#9  0x00007f421f80275b in QSortFilterProxyModel::flags(QModelIndex const&) const () at /usr/lib64/libQtGui.so.4
#10 0x00007f421f7c0cf4 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () at /usr/lib64/libQtGui.so.4
#11 0x00007f421f7c4198 in QTreeView::drawTree(QPainter*, QRegion const&) const () at /usr/lib64/libQtGui.so.4
#12 0x00007f421f7c7c0f in QTreeView::paintEvent(QPaintEvent*) () at /usr/lib64/libQtGui.so.4
#13 0x00007f421f2cbef0 in QWidget::event(QEvent*) () at /usr/lib64/libQtGui.so.4
#14 0x00007f421f6751ce in QFrame::event(QEvent*) () at /usr/lib64/libQtGui.so.4
#15 0x00007f421f78c253 in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib64/libQtGui.so.4
#16 0x00007f421f7cb71c in QTreeView::viewportEvent(QEvent*) () at /usr/lib64/libQtGui.so.4
#17 0x00007f421ed39ba6 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQtCore.so.4
#18 0x00007f421f278efc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#19 0x00007f421f27f9ec in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#20 0x00007f422048368a in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#21 0x00007f421ed39a3d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQtCore.so.4
#22 0x00007f421f2c69e1 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#23 0x00007f421f2c7384 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#24 0x00007f421f2c7292 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#25 0x00007f421f2c7292 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#26 0x00007f421f2c7292 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#27 0x00007f421f2c7292 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#28 0x00007f421f2c65a6 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#29 0x00007f421f2c7384 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#30 0x00007f421f2c7292 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#31 0x00007f421f2c7292 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#32 0x00007f421f2c65a6 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#33 0x00007f421f2c7384 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#34 0x00007f421f2c65a6 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib64/libQtGui.so.4
#35 0x00007f421f489322 in  () at /usr/lib64/libQtGui.so.4
#36 0x00007f421f2ba310 in QWidgetPrivate::syncBackingStore() () at /usr/lib64/libQtGui.so.4
#37 0x00007f421f2cc130 in QWidget::event(QEvent*) () at /usr/lib64/libQtGui.so.4
#38 0x00007f421f278f1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#39 0x00007f421f27f9ec in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#40 0x00007f422048368a in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#41 0x00007f421ed39a3d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQtCore.so.4
#42 0x00007f421ed3ce6e in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQtCore.so.4
#43 0x00007f421ed680ee in  () at /usr/lib64/libQtCore.so.4
#44 0x00007f4216e6a0c7 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#45 0x00007f4216e6a2f8 in  () at /usr/lib64/libglib-2.0.so.0
#46 0x00007f4216e6a39c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#47 0x00007f421ed6825e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#48 0x00007f421f31c986 in  () at /usr/lib64/libQtGui.so.4
#49 0x00007f421ed38401 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#50 0x00007f421ed38715 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#51 0x00007f421ed3df09 in QCoreApplication::exec() () at /usr/lib64/libQtCore.so.4
#52 0x000000000040874d in  ()
#53 0x00007f421e4ac610 in __libc_start_main () at /lib64/libc.so.6
#54 0x000000000040a359 in _start ()

Reported using DrKonqi
Comment 1 Myriam Schweingruber 2016-03-14 10:43:41 UTC
Thankyou for the report, but unfortunately your backtrace has no debugging symbols, without those it is rather useless. When submitting crash reports, please make sure Dr. Konqi gives you at least a 2 star rating, and that you have debugging symbols installed for Amarok and its dependencies. Please see also https://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports on how to get a a better backtrace.

FWIW: Dr. Konqi would then also have shown you that this is a known bug

*** This bug has been marked as a duplicate of bug 328359 ***
Comment 2 magpiper 2016-05-26 06:41:20 UTC
Created attachment 99195 [details]
New crash information added by DrKonqi

amarok (2.8.0) on KDE Platform 4.14.18 using Qt 4.8.6

obtaining tags for 3 songs from MusicBraninz

-- Backtrace (Reduced):
#6  QReadWriteLock::lockForRead (this=0x38) at thread/qreadwritelock.cpp:149
[...]
#9  0x00007f8b8dc23d5b in QSortFilterProxyModel::flags (this=<optimized out>, index=...) at itemviews/qsortfilterproxymodel.cpp:2003
#10 0x00007f8b8dbe3bd1 in QTreeView::drawRow (this=0x8c59b10, painter=0x7fff431144b0, option=..., index=...) at itemviews/qtreeview.cpp:1638
#11 0x00007f8b8dbe6cc2 in QTreeView::drawTree (this=this@entry=0x8c59b10, painter=painter@entry=0x7fff431144b0, region=...) at itemviews/qtreeview.cpp:1445
#12 0x00007f8b8dbea46c in QTreeView::paintEvent (this=0x8c59b10, event=0x7fff43114bf0) at itemviews/qtreeview.cpp:1270
Comment 3 magpiper 2016-05-26 06:41:30 UTC
Created attachment 99196 [details]
New crash information added by DrKonqi

amarok (2.8.0) on KDE Platform 4.14.18 using Qt 4.8.6

obtaining tags for 3 songs from MusicBraninz

-- Backtrace (Reduced):
#6  QReadWriteLock::lockForRead (this=0x38) at thread/qreadwritelock.cpp:149
[...]
#9  0x00007f8b8dc23d5b in QSortFilterProxyModel::flags (this=<optimized out>, index=...) at itemviews/qsortfilterproxymodel.cpp:2003
#10 0x00007f8b8dbe3bd1 in QTreeView::drawRow (this=0x8c59b10, painter=0x7fff431144b0, option=..., index=...) at itemviews/qtreeview.cpp:1638
#11 0x00007f8b8dbe6cc2 in QTreeView::drawTree (this=this@entry=0x8c59b10, painter=painter@entry=0x7fff431144b0, region=...) at itemviews/qtreeview.cpp:1445
#12 0x00007f8b8dbea46c in QTreeView::paintEvent (this=0x8c59b10, event=0x7fff43114bf0) at itemviews/qtreeview.cpp:1270
Comment 4 magpiper 2016-05-26 06:41:31 UTC
Created attachment 99197 [details]
New crash information added by DrKonqi

amarok (2.8.0) on KDE Platform 4.14.18 using Qt 4.8.6

obtaining tags for 3 songs from MusicBraninz

-- Backtrace (Reduced):
#6  QReadWriteLock::lockForRead (this=0x38) at thread/qreadwritelock.cpp:149
[...]
#9  0x00007f8b8dc23d5b in QSortFilterProxyModel::flags (this=<optimized out>, index=...) at itemviews/qsortfilterproxymodel.cpp:2003
#10 0x00007f8b8dbe3bd1 in QTreeView::drawRow (this=0x8c59b10, painter=0x7fff431144b0, option=..., index=...) at itemviews/qtreeview.cpp:1638
#11 0x00007f8b8dbe6cc2 in QTreeView::drawTree (this=this@entry=0x8c59b10, painter=painter@entry=0x7fff431144b0, region=...) at itemviews/qtreeview.cpp:1445
#12 0x00007f8b8dbea46c in QTreeView::paintEvent (this=0x8c59b10, event=0x7fff43114bf0) at itemviews/qtreeview.cpp:1270
Comment 5 Myriam Schweingruber 2016-05-26 11:21:40 UTC
(In reply to magpiper from comment #4)
> Created attachment 99197 [details]
> New crash information added by DrKonqi
> 
Please do not add crash reports to bugs marked as duplicates, but to the original one. 

FWIW: your backtrace lacks debugging symbols because you have not installed those for Amarok. Without debugging symbols installed, the backtrace is not of much use.