Application: ktorrent (4.1.3)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-27-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed: KTorrent crashed on startup.

- Custom settings of the application: Full speed ahead. Just installed the latest updates (xserver) for Kubuntu 12.04.

The crash can be reproduced every time.

-- Backtrace:
Application: KTorrent (ktorrent), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa597385780 (LWP 2339))]

Thread 6 (Thread 0x7fa580469700 (LWP 2342)):
#0  0x00007fa58ede55c0 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa58eda9efc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa58edaa49a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa585c7a406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fa58edcb9e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa5905fbe9a in start_thread (arg=0x7fa580469700) at pthread_create.c:308
#6  0x00007fa5932344bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fa5762ee700 (LWP 2345)):
#0  0x00007fa593228b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa58edaa036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa58edaa164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa594b87426 in QEventDispatcherGlib::processEvents (this=0x7fa56c001e00, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fa594b56c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fa594b56ed7 in QEventLoop::exec (this=0x7fa5762ede00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fa594a55fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fa594a58fcb in QThreadPrivate::start (arg=0x1fc2b80) at thread/qthread_unix.cpp:298
#8  0x00007fa5905fbe9a in start_thread (arg=0x7fa5762ee700) at pthread_create.c:308
#9  0x00007fa5932344bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fa575aed700 (LWP 2346)):
#0  0x00007fa596ee68eb in deref (this=0x1f9bc48) at /usr/include/qt4/QtCore/qatomic_x86_64.h:133
#1  deref (value=0x1cc7010, d=0x1f9bc40) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:346
#2  deref (this=0x7fa575aecd90) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:338
#3  ~ExternalRefCount (this=0x7fa575aecd90, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:403
#4  ~QSharedPointer (this=0x7fa575aecd90, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:461
#5  dht::RPCServer::Private::run (this=0x1fb78e0) at ../../src/dht/rpcserver.cpp:91
#6  0x00007fa594a58fcb in QThreadPrivate::start (arg=0x1fb78e0) at thread/qthread_unix.cpp:298
#7  0x00007fa5905fbe9a in start_thread (arg=0x7fa575aed700) at pthread_create.c:308
#8  0x00007fa5932344bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fa559861700 (LWP 2349)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fa56b10edec in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fa56b10ef19 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fa5905fbe9a in start_thread (arg=0x7fa559861700) at pthread_create.c:308
#4  0x00007fa5932344bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa552ae8700 (LWP 2350)):
#0  0x00007fa58eda9c41 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa58edaa0a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa58edaa164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa594b87426 in QEventDispatcherGlib::processEvents (this=0x7fa5540025f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fa594b56c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fa594b56ed7 in QEventLoop::exec (this=0x7fa552ae7e00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fa594a55fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fa594a58fcb in QThreadPrivate::start (arg=0x359d070) at thread/qthread_unix.cpp:298
#8  0x00007fa5905fbe9a in start_thread (arg=0x7fa552ae8700) at pthread_create.c:308
#9  0x00007fa5932344bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa597385780 (LWP 2339)):
[KCrash Handler]
#6  data (this=0x8) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:135
#7  qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:2430
#8  d_func (this=0x0) at qdbusabstractinterface.h:159
#9  QDBusAbstractInterface::callWithArgumentList (this=0x0, mode=QDBus::Block, method=..., args=...) at qdbusabstractinterface.cpp:430
#10 0x00007fa5690e1110 in Reset (this=0x0) at ../../dnssd/avahi_entrygroup_interface.h:94
#11 serverStateChanged (this=0x1fbdfd0, s=<optimized out>) at ../../dnssd/avahi-publicservice.cpp:203
#12 DNSSD::PublicServicePrivate::serverStateChanged (this=0x1fbdfd0, s=<optimized out>) at ../../dnssd/avahi-publicservice.cpp:193
#13 0x00007fa5690e1353 in DNSSD::PublicService::publishAsync (this=<optimized out>) at ../../dnssd/avahi-publicservice.cpp:230
#14 0x00007fa5603689ce in kt::TorrentService::start (this=0x2f46dd0) at ../../../plugins/zeroconf/torrentservice.cpp:83
#15 0x00007fa596ebea9d in start (this=0x2637bb0) at ../../src/torrent/peersourcemanager.cpp:81
#16 bt::PeerSourceManager::start (this=0x2637bb0) at ../../src/torrent/peersourcemanager.cpp:73
#17 0x00007fa596ec809d in bt::TorrentControl::continueStart (this=0x261dda0) at ../../src/torrent/torrentcontrol.cpp:461
#18 0x00007fa596ec89cf in bt::TorrentControl::start (this=0x261dda0) at ../../src/torrent/torrentcontrol.cpp:432
#19 0x00007fa596bcbe01 in kt::QueueManager::startSafely (this=<optimized out>, tc=0x261dda0) at ../../libktcore/torrent/queuemanager.cpp:731
#20 0x00007fa596bcbf49 in startInternal (tc=0x261dda0, this=0x1f8faa0) at ../../libktcore/torrent/queuemanager.cpp:102
#21 kt::QueueManager::startInternal (this=0x1f8faa0, tc=0x261dda0) at ../../libktcore/torrent/queuemanager.cpp:91
#22 0x00007fa596bcdec3 in kt::QueueManager::orderQueue (this=0x1f8faa0) at ../../libktcore/torrent/queuemanager.cpp:588
#23 0x00000000004330e0 in kt::Core::qt_metacall (this=0x1fa13e0, _c=QMetaObject::InvokeMetaMethod, _id=39, _a=0x2abf280) at ./core.moc:194
#24 0x00007fa594b71446 in QObject::event (this=0x1fa13e0, e=<optimized out>) at kernel/qobject.cpp:1195
#25 0x00007fa593eda894 in notify_helper (e=0x2abf320, receiver=0x1fa13e0, this=0x1cd9a60) at kernel/qapplication.cpp:4559
#26 QApplicationPrivate::notify_helper (this=0x1cd9a60, receiver=0x1fa13e0, e=0x2abf320) at kernel/qapplication.cpp:4531
#27 0x00007fa593edf713 in QApplication::notify (this=0x7fff4ad8f8a0, receiver=0x1fa13e0, e=0x2abf320) at kernel/qapplication.cpp:4420
#28 0x0000000000439a21 in kt::App::notify (this=<optimized out>, receiver=<optimized out>, event=<optimized out>) at ../../ktorrent/app.cpp:99
#29 0x00007fa594b57e9c in QCoreApplication::notifyInternal (this=0x7fff4ad8f8a0, receiver=0x1fa13e0, event=0x2abf320) at kernel/qcoreapplication.cpp:876
#30 0x00007fa594b5bc6a in sendEvent (event=0x2abf320, receiver=0x1fa13e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1c64670) at kernel/qcoreapplication.cpp:1500
#32 0x00007fa594b86f93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#33 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#34 0x00007fa58eda9d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fa58edaa0a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fa58edaa164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fa594b873bf in QEventDispatcherGlib::processEvents (this=0x1c65b30, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#38 0x00007fa593f82d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007fa594b56c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007fa594b56ed7 in QEventLoop::exec (this=0x7fff4ad8f830, flags=...) at kernel/qeventloop.cpp:204
#41 0x00007fa594b5bf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#42 0x0000000000428452 in main (argc=1, argv=0x7fff4ad90718) at ../../ktorrent/main.cpp:177

Possible duplicates by query: bug 303178, bug 302996, bug 300594, bug 300109, bug 299894.

Reported using DrKonqi