Bug 363645

Application: muon-updater (2.2.0)
KDE Platform Version: 4.13.3
Qt Version: 4.8.6
Operating System: Linux 3.13.0-86-generic x86_64
Distribution: Ubuntu 14.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Just at that time at muon crashed I was doing nothing. 
At the first try I opened muon and leaved it in background. After a while I wondered why the crash window appeared. The second time I did exactly the same but couldn't say how long it take until the crash. At the third try I simply clicked on the muon icon in the taskbar and let the system alone, just to remember how long it would take until muon crashes. It took approx. about 15 minutes.

- Unusual behavior I noticed:
Usually when I opened muon from the icon on the right side of the tasklist muon opens, shows a list of packages for 1 second and then the circle was spinning for a few seconds until the list of upgradeable packages appeared.
This time before the crash the circle was spinning right from the beginning without showing any package name. But I verified using aptitude and apt-get that there are some packages to update.

- Custom settings of the application:
I set the option to show the number of packages to update when hovering over the taskbar icon. Currently it says: "11 packages for update, 21 of them are security updates". Aptitude says the same.

The crash can be reproduced every time.

-- Backtrace:
Application: Muon-Aktualisierungsverwaltung (muon-updater), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7ea1fdc7c0 (LWP 10502))]

Thread 2 (Thread 0x7f7e8e019700 (LWP 10503)):
#0  0x00007f7e9f63212d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f7e9c4fefe4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f7e88003480, timeout=-1, context=0x7f7e880009a0) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:4028
#2  g_main_context_iterate (context=context@entry=0x7f7e880009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3729
#3  0x00007f7e9c4ff0ec in g_main_context_iteration (context=0x7f7e880009a0, may_block=1) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3795
#4  0x00007f7e9fdb87be in QEventDispatcherGlib::processEvents (this=0x7f7e880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007f7e9fd8a0af in QEventLoop::processEvents (this=this@entry=0x7f7e8e018de0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f7e9fd8a3a5 in QEventLoop::exec (this=this@entry=0x7f7e8e018de0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f7e9fc86c5f in QThread::exec (this=this@entry=0x1cca0a0) at thread/qthread.cpp:537
#8  0x00007f7e9fd6b823 in QInotifyFileSystemWatcherEngine::run (this=0x1cca0a0) at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007f7e9fc8932f in QThreadPrivate::start (arg=0x1cca0a0) at thread/qthread_unix.cpp:349
#10 0x00007f7e9c9de182 in start_thread (arg=0x7f7e8e019700) at pthread_create.c:312
#11 0x00007f7e9f63f47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f7ea1fdc7c0 (LWP 10502)):
[KCrash Handler]
#6  0x00007f7e8d3aaeb0 in KNSResource::setStatus(KNS3::Entry::Status) () from /usr/lib/kde4/muon-knsbackend.so
#7  0x00007f7e8d3aaefc in KNSResource::setEntry(KNS3::Entry const&) () from /usr/lib/kde4/muon-knsbackend.so
#8  0x00007f7e8d3a7b7c in KNSBackend::receivedEntries(QList<KNS3::Entry> const&) () from /usr/lib/kde4/muon-knsbackend.so
#9  0x00007f7e9fd9f87a in QMetaObject::activate (sender=0x1ad4710, m=m@entry=0x7f7e8d39b2c0 <KNS3::DownloadManager::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff3fde5bd0) at kernel/qobject.cpp:3539
#10 0x00007f7e8d14efd2 in KNS3::DownloadManager::searchResult (this=<optimized out>, _t1=...) at ./downloadmanager.moc:112
#11 0x00007f7e8d14f14a in KNS3::DownloadManager::Private::_k_slotEntriesLoaded (this=0x1ff9670, entries=...) at ../../../knewstuff/knewstuff3/downloadmanager.cpp:117
#12 0x00007f7e9fd9f87a in QMetaObject::activate (sender=sender@entry=0x1ad74d0, m=m@entry=0x7f7e8d39b740 <KNS3::Engine::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fff3fde5d70) at kernel/qobject.cpp:3539
#13 0x00007f7e8d15670b in signalEntriesLoaded (_t1=..., this=0x1ad74d0) at ./engine.moc:198
#14 KNS3::Engine::slotEntriesLoaded (this=0x1ad74d0, request=..., entries=...) at ../../../knewstuff/knewstuff3/core/engine.cpp:280
#15 0x00007f7e8d158f36 in KNS3::Engine::qt_static_metacall (_o=0x1ad74d0, _id=1, _a=0x3147c720, _c=<optimized out>) at ./engine.moc:128
#16 0x00007f7e9fd9f87a in QMetaObject::activate (sender=sender@entry=0x2dbc2d0, m=m@entry=0x7f7e8d39b960 <KNS3::Provider::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fff3fde5f10) at kernel/qobject.cpp:3539
#17 0x00007f7e8d1646ca in KNS3::Provider::loadingFinished (this=this@entry=0x2dbc2d0, _t1=..., _t2=...) at ./provider.moc:124
#18 0x00007f7e8d179489 in KNS3::AtticaProvider::categoryContentsLoaded (this=0x2dbc2d0, job=<optimized out>) at ../../../knewstuff/knewstuff3/attica/atticaprovider.cpp:230
#19 0x00007f7e9fd9f87a in QMetaObject::activate (sender=0x3137ee90, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3fde6120) at kernel/qobject.cpp:3539
#20 0x00007f7e9da4b30f in Attica::BaseJob::finished(Attica::BaseJob*) () from /usr/lib/x86_64-linux-gnu/libattica.so.0.4
#21 0x00007f7e9da4b4e9 in Attica::BaseJob::dataFinished() () from /usr/lib/x86_64-linux-gnu/libattica.so.0.4
#22 0x00007f7e9fd9f87a in QMetaObject::activate (sender=0x313964f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#23 0x00007f7e9fd93908 in QMetaMethod::invoke (this=this@entry=0x7fff3fde6630, object=object@entry=0x313964f0, connectionType=Qt::DirectConnection, connectionType@entry=Qt::AutoConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#24 0x00007f7e9fd95dc2 in QMetaObject::invokeMethod (obj=obj@entry=0x313964f0, member=member@entry=0x7f7e9edfb305 "finished", type=type@entry=Qt::AutoConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#25 0x00007f7e9ec9347c in invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=Qt::AutoConnection, member=0x7f7e9edfb305 "finished", obj=0x313964f0) at /usr/include/qt4/QtCore/qobjectdefs.h:418
#26 KDEPrivate::AccessManagerReply::emitFinished (this=this@entry=0x313964f0, state=state@entry=true, type=type@entry=Qt::AutoConnection) at ../../kio/kio/accessmanagerreply_p.cpp:485
#27 0x00007f7e9ec95100 in KDEPrivate::AccessManagerReply::slotResult (this=0x313964f0, kJob=0x30fcfac0) at ../../kio/kio/accessmanagerreply_p.cpp:427
#28 0x00007f7e9fd9f87a in QMetaObject::activate (sender=sender@entry=0x30fcfac0, m=m@entry=0x7f7ea05a5600 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fff3fde6b20) at kernel/qobject.cpp:3539
#29 0x00007f7ea02156d2 in KJob::result (this=this@entry=0x30fcfac0, _t1=_t1@entry=0x30fcfac0) at ./kjob.moc:207
#30 0x00007f7ea0215710 in KJob::emitResult (this=this@entry=0x30fcfac0) at ../../kdecore/jobs/kjob.cpp:318
#31 0x00007f7e9eccf39a in KIO::SimpleJob::slotFinished (this=this@entry=0x30fcfac0) at ../../kio/kio/job.cpp:496
#32 0x00007f7e9ecd04ee in KIO::TransferJob::slotFinished (this=0x30fcfac0) at ../../kio/kio/job.cpp:1110
#33 0x00007f7e9fd9f87a in QMetaObject::activate (sender=0x2d876f0, m=m@entry=0x7f7e9f078580 <KIO::SlaveInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#34 0x00007f7e9ed6d533 in KIO::SlaveInterface::finished (this=<optimized out>) at ./slaveinterface.moc:184
#35 0x00007f7e9ed6ea76 in KIO::SlaveInterface::dispatch (this=<optimized out>, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:176
#36 0x00007f7e9ed6c56e in KIO::SlaveInterface::dispatch (this=0x2d876f0) at ../../kio/kio/slaveinterface.cpp:92
#37 0x00007f7e9ed611e6 in KIO::Slave::gotInput (this=0x2d876f0) at ../../kio/kio/slave.cpp:344
#38 0x00007f7e9fd9f87a in QMetaObject::activate (sender=0x2cdcff0, m=m@entry=0x7f7e9f071aa0 <KIO::Connection::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#39 0x00007f7e9ec9cb40 in KIO::Connection::readyRead (this=<optimized out>) at ./connection.moc:105
#40 0x00007f7e9ec9d231 in KIO::ConnectionPrivate::dequeue (this=0x2dedb70) at ../../kio/kio/connection.cpp:82
#41 0x00007f7e9fda3c1e in QObject::event (this=0x2cdcff0, e=<optimized out>) at kernel/qobject.cpp:1194
#42 0x00007f7ea077de2c in QApplicationPrivate::notify_helper (this=this@entry=0x1ad9550, receiver=receiver@entry=0x2cdcff0, e=e@entry=0x312b8f10) at kernel/qapplication.cpp:4567
#43 0x00007f7ea07844a0 in QApplication::notify (this=this@entry=0x7fff3fde7870, receiver=receiver@entry=0x2cdcff0, e=e@entry=0x312b8f10) at kernel/qapplication.cpp:4353
#44 0x00007f7ea1488d1a in KApplication::notify (this=0x7fff3fde7870, receiver=0x2cdcff0, event=0x312b8f10) at ../../kdeui/kernel/kapplication.cpp:311
#45 0x00007f7e9fd8b4dd in QCoreApplication::notifyInternal (this=0x7fff3fde7870, receiver=receiver@entry=0x2cdcff0, event=event@entry=0x312b8f10) at kernel/qcoreapplication.cpp:953
#46 0x00007f7e9fd8eb3d in sendEvent (event=0x312b8f10, receiver=0x2cdcff0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#47 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1aa5fb0) at kernel/qcoreapplication.cpp:1577
#48 0x00007f7e9fd8efe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#49 0x00007f7e9fdb8f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#50 postEventSourceDispatch (s=0x1ac98d0) at kernel/qeventdispatcher_glib.cpp:287
#51 0x00007f7e9c4fee04 in g_main_dispatch (context=0x1ad4280) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3064
#52 g_main_context_dispatch (context=context@entry=0x1ad4280) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3663
#53 0x00007f7e9c4ff048 in g_main_context_iterate (context=context@entry=0x1ad4280, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3734
#54 0x00007f7e9c4ff0ec in g_main_context_iteration (context=0x1ad4280, may_block=1) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3795
#55 0x00007f7e9fdb87a1 in QEventDispatcherGlib::processEvents (this=0x1aa7900, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#56 0x00007f7ea081fbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#57 0x00007f7e9fd8a0af in QEventLoop::processEvents (this=this@entry=0x7fff3fde7770, flags=...) at kernel/qeventloop.cpp:149
#58 0x00007f7e9fd8a3a5 in QEventLoop::exec (this=this@entry=0x7fff3fde7770, flags=...) at kernel/qeventloop.cpp:204
#59 0x00007f7e9fd8fb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#60 0x000000000040ce11 in ?? ()
#61 0x00007f7e9f566ec5 in __libc_start_main (main=0x40ca30, argc=1, argv=0x7fff3fde79a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff3fde7998) at libc-start.c:287
#62 0x000000000040ce84 in _start ()

Possible duplicates by query: bug 324074, bug 322665, bug 321657.

I did copy/past via browser because of Bug 337742 in Kubuntu 14.04, which means that it's not possible to report via DrKonqi.