Bug 305968

Application: ktorrent (4.1.3)
KDE Platform Version: 4.9.00
Qt Version: 4.8.2
Operating System: Linux 3.2.0-30-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed: Trying to open it, under any circumstances. Shows that it loads, but later terminates. DHT, µTP enabled and ports forwarded.

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 0x7fdb4301f780 (LWP 2451))]

Thread 6 (Thread 0x7fdb2dafb700 (LWP 2453)):
#0  0x00007fdb3aa81339 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fdb3aa815c9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb3aa45aee in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb3aa45fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdb3aa46164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdb408249e6 in QEventDispatcherGlib::processEvents (this=0x7fdb28002800, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fdb407f3f22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fdb407f4177 in QEventLoop::exec (this=0x7fdb2dafae00, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fdb406f3057 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007fdb406f607b in QThreadPrivate::start (arg=0xc0a6d0) at thread/qthread_unix.cpp:307
#10 0x00007fdb3c297e9a in start_thread (arg=0x7fdb2dafb700) at pthread_create.c:308
#11 0x00007fdb3eed04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fdb2d2fa700 (LWP 2454)):
#0  0x00007fdb3eec4b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fdb42b211aa in net::Poll::poll (this=0x7fdb2d2f9cd0, timeout=<optimized out>) at ../../src/net/poll.cpp:99
#2  0x00007fdb42b8393b in dht::RPCServer::Private::run (this=0xb2add0) at ../../src/dht/rpcserver.cpp:95
#3  0x00007fdb406f607b in QThreadPrivate::start (arg=0xb2add0) at thread/qthread_unix.cpp:307
#4  0x00007fdb3c297e9a in start_thread (arg=0x7fdb2d2fa700) at pthread_create.c:308
#5  0x00007fdb3eed04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fdb272f4700 (LWP 2455)):
#0  0x00007fdb3eec4b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fdb3aa46036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb3aa46164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb408249e6 in QEventDispatcherGlib::processEvents (this=0x7fdb1c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fdb407f3f22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fdb407f4177 in QEventLoop::exec (this=0x7fdb272f3dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fdb406f3057 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fdb407d3c2f in QInotifyFileSystemWatcherEngine::run (this=0x12feba0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fdb406f607b in QThreadPrivate::start (arg=0x12feba0) at thread/qthread_unix.cpp:307
#9  0x00007fdb3c297e9a in start_thread (arg=0x7fdb272f4700) at pthread_create.c:308
#10 0x00007fdb3eed04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fdb110f5700 (LWP 2458)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fdb257b7dec in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fdb257b7f19 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fdb3c297e9a in start_thread (arg=0x7fdb110f5700) at pthread_create.c:308
#4  0x00007fdb3eed04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fdb0e668700 (LWP 2459)):
#0  0x00007fdb3eec4b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fdb3aa46036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdb3aa46164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdb408249e6 in QEventDispatcherGlib::processEvents (this=0x7fdb080025f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fdb407f3f22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fdb407f4177 in QEventLoop::exec (this=0x7fdb0e667e00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fdb406f3057 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fdb406f607b in QThreadPrivate::start (arg=0x1ac8520) at thread/qthread_unix.cpp:307
#8  0x00007fdb3c297e9a in start_thread (arg=0x7fdb0e668700) at pthread_create.c:308
#9  0x00007fdb3eed04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fdb4301f780 (LWP 2451)):
[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:2436
#8  d_func (this=0x0) at qdbusabstractinterface.h:159
#9  QDBusAbstractInterface::callWithArgumentList (this=0x0, mode=QDBus::Block, method=..., args=...) at qdbusabstractinterface.cpp:430
#10 0x00007fdb241d7110 in Reset (this=0x0) at ../../dnssd/avahi_entrygroup_interface.h:94
#11 serverStateChanged (this=0xe7ab50, s=<optimized out>) at ../../dnssd/avahi-publicservice.cpp:203
#12 DNSSD::PublicServicePrivate::serverStateChanged (this=0xe7ab50, s=<optimized out>) at ../../dnssd/avahi-publicservice.cpp:193
#13 0x00007fdb241d7353 in DNSSD::PublicService::publishAsync (this=<optimized out>) at ../../dnssd/avahi-publicservice.cpp:230
#14 0x00007fdb1804a9ce in kt::TorrentService::start (this=0x1329970) at ../../../plugins/zeroconf/torrentservice.cpp:83
#15 0x00007fdb42b5ba9d in start (this=0xe4fc20) at ../../src/torrent/peersourcemanager.cpp:81
#16 bt::PeerSourceManager::start (this=0xe4fc20) at ../../src/torrent/peersourcemanager.cpp:73
#17 0x00007fdb42b6509d in bt::TorrentControl::continueStart (this=0xe46d50) at ../../src/torrent/torrentcontrol.cpp:461
#18 0x00007fdb42b659cf in bt::TorrentControl::start (this=0xe46d50) at ../../src/torrent/torrentcontrol.cpp:432
#19 0x00007fdb42868e01 in kt::QueueManager::startSafely (this=<optimized out>, tc=0xe46d50) at ../../libktcore/torrent/queuemanager.cpp:731
#20 0x00007fdb42868f49 in startInternal (tc=0xe46d50, this=0xc77e20) at ../../libktcore/torrent/queuemanager.cpp:102
#21 kt::QueueManager::startInternal (this=0xc77e20, tc=0xe46d50) at ../../libktcore/torrent/queuemanager.cpp:91
#22 0x00007fdb4286aec3 in kt::QueueManager::orderQueue (this=0xc77e20) at ../../libktcore/torrent/queuemanager.cpp:588
#23 0x00000000004330e0 in kt::Core::qt_metacall (this=0xcbe220, _c=QMetaObject::InvokeMetaMethod, _id=39, _a=0xe747e0) at ./core.moc:194
#24 0x00007fdb4080ea06 in QObject::event (this=0xcbe220, e=<optimized out>) at kernel/qobject.cpp:1195
#25 0x00007fdb3fb767b4 in notify_helper (e=0xe470f0, receiver=0xcbe220, this=0xb4e140) at kernel/qapplication.cpp:4556
#26 QApplicationPrivate::notify_helper (this=0xb4e140, receiver=0xcbe220, e=0xe470f0) at kernel/qapplication.cpp:4528
#27 0x00007fdb3fb7b583 in QApplication::notify (this=0x7fff90003b80, receiver=0xcbe220, e=0xe470f0) at kernel/qapplication.cpp:4417
#28 0x0000000000439a21 in kt::App::notify (this=<optimized out>, receiver=<optimized out>, event=<optimized out>) at ../../ktorrent/app.cpp:99
#29 0x00007fdb407f53ec in QCoreApplication::notifyInternal (this=0x7fff90003b80, receiver=0xcbe220, event=0xe470f0) at kernel/qcoreapplication.cpp:915
#30 0x00007fdb407f91ca in sendEvent (event=0xe470f0, receiver=0xcbe220) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xac6670) at kernel/qcoreapplication.cpp:1539
#32 0x00007fdb40824553 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#33 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#34 0x00007fdb3aa45d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fdb3aa460a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fdb3aa46164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fdb4082497f in QEventDispatcherGlib::processEvents (this=0xac7b30, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#38 0x00007fdb3fc1ecde in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007fdb407f3f22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007fdb407f4177 in QEventLoop::exec (this=0x7fff90003b10, flags=...) at kernel/qeventloop.cpp:204
#41 0x00007fdb407f94c7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#42 0x0000000000428452 in main (argc=5, argv=0x7fff900049f8) at ../../ktorrent/main.cpp:177

Possible duplicates by query: bug 305585, bug 303683, bug 303178, bug 302996, bug 300594.

Reported using DrKonqi