Bug 304353

Application: kmail (4.8.4)
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: Linux Mint 13 Maya

-- Information about the crash:
- What I was doing when the application crashed:
fetching email;
closing Kmail

- Unusual behavior I noticed:
often Nepomuk causes crashes or segmentation faults

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
[Current thread is 1 (Thread 0x7f1ea98067c0 (LWP 3582))]

Thread 5 (Thread 0x7f1e87257700 (LWP 3594)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1e9bae9dec in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f1e9bae9f19 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f1ea4625e9a in start_thread (arg=0x7f1e87257700) at pthread_create.c:308
#4  0x00007f1ea6b564bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f1e86956700 (LWP 3595)):
#0  0x00007f1e9f3f578e in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1e9f3f5f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1e9f3f6164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1ea74e1426 in QEventDispatcherGlib::processEvents (this=0x7f1e800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1ea74b0c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1ea74b0ed7 in QEventLoop::exec (this=0x7f1e86955dc0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1ea73affa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f1ea73b2fcb in QThreadPrivate::start (arg=0x24c2de0) at thread/qthread_unix.cpp:298
#8  0x00007f1ea4625e9a in start_thread (arg=0x7f1e86956700) at pthread_create.c:308
#9  0x00007f1ea6b564bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1e3f8a2700 (LWP 3612)):
#0  0x00007f1ea6b4ab03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f1e9f3f6036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1e9f3f6164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1ea74e1426 in QEventDispatcherGlib::processEvents (this=0x7f1e340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1ea74b0c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1ea74b0ed7 in QEventLoop::exec (this=0x7f1e3f8a1d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1ea73affa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f1ea74909ff in QInotifyFileSystemWatcherEngine::run (this=0x2995540) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f1ea73b2fcb in QThreadPrivate::start (arg=0x2995540) at thread/qthread_unix.cpp:298
#9  0x00007f1ea4625e9a in start_thread (arg=0x7f1e3f8a2700) at pthread_create.c:308
#10 0x00007f1ea6b564bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1e84e3b700 (LWP 3660)):
[KCrash Handler]
#6  QMutex::lock (this=0x24721a8) at thread/qmutex.cpp:153
#7  0x00007f1e98ddb0fa in lockInline (this=0x24721a8) at /usr/include/qt4/QtCore/qmutex.h:198
#8  QMutexLocker (m=0x24721a8, this=<synthetic pointer>) at /usr/include/qt4/QtCore/qmutex.h:109
#9  Soprano::Client::SocketHandler::~SocketHandler (this=0x7f1e38003af0, __in_chrg=<optimized out>) at ../../client/clientconnection.cpp:58
#10 0x00007f1e98ddb1c9 in Soprano::Client::SocketHandler::~SocketHandler (this=0x7f1e38003af0, __in_chrg=<optimized out>) at ../../client/clientconnection.cpp:61
#11 0x00007f1ea73b12a0 in QThreadStorageData::finish (p=0x25834e8) at thread/qthreadstorage.cpp:203
#12 0x00007f1ea73b1df7 in QThreadPrivate::finish (arg=0x2583d70) at thread/qthread_unix.cpp:321
#13 0x00007f1ea73b2fd3 in ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:545
#14 ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at thread/qthread_unix.cpp:716
#15 QThreadPrivate::start (arg=0x2583d70) at thread/qthread_unix.cpp:300
#16 0x00007f1ea4625e9a in start_thread (arg=0x7f1e84e3b700) at pthread_create.c:308
#17 0x00007f1ea6b564bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1ea98067c0 (LWP 3582)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f1ea73b34db in wait (time=18446744073709551615, this=0x2583420) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2583e28, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1ea73b2be8 in QThread::wait (this=<optimized out>, time=18446744073709551615) at thread/qthread_unix.cpp:651
#4  0x00007f1ea73a74d2 in QThreadPoolPrivate::reset (this=0x256f130) at concurrent/qthreadpool.cpp:279
#5  0x00007f1ea73a76ad in QThreadPool::~QThreadPool (this=0x256ede8, __in_chrg=<optimized out>) at concurrent/qthreadpool.cpp:441
#6  0x00007f1ea31b7624 in ~AsyncNepomukResourceRetrieverPrivate (this=0x256ede0, __in_chrg=<optimized out>) at ../../messagecore/asyncnepomukresourceretriever.cpp:58
#7  MessageCore::AsyncNepomukResourceRetriever::~AsyncNepomukResourceRetriever (this=0x2560ad0, __in_chrg=<optimized out>) at ../../messagecore/asyncnepomukresourceretriever.cpp:113
#8  0x00007f1ea31b76c9 in MessageCore::AsyncNepomukResourceRetriever::~AsyncNepomukResourceRetriever (this=0x2560ad0, __in_chrg=<optimized out>) at ../../messagecore/asyncnepomukresourceretriever.cpp:114
#9  0x00007f1ea74c4935 in QObjectPrivate::deleteChildren (this=0x25651d0) at kernel/qobject.cpp:1908
#10 0x00007f1ea74cab9c in QObject::~QObject (this=0x2560d30, __in_chrg=<optimized out>) at kernel/qobject.cpp:927
#11 0x00007f1ea8622de9 in KMail::MessageActions::~MessageActions (this=0x2560d30, __in_chrg=<optimized out>) at ../../kmail/messageactions.cpp:224
#12 0x00007f1ea74c4935 in QObjectPrivate::deleteChildren (this=0x227c2d0) at kernel/qobject.cpp:1908
#13 0x00007f1ea7a1f740 in QWidget::~QWidget (this=0x227a2b0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#14 0x00007f1ea85efeff in KMMainWidget::~KMMainWidget (this=0x227a2b0, __in_chrg=<optimized out>) at ../../kmail/kmmainwidget.cpp:343
#15 0x00007f1ea85f0139 in KMMainWidget::~KMMainWidget (this=0x227a2b0, __in_chrg=<optimized out>) at ../../kmail/kmmainwidget.cpp:348
#16 0x00007f1ea74c4935 in QObjectPrivate::deleteChildren (this=0x227b730) at kernel/qobject.cpp:1908
#17 0x00007f1ea7a1f740 in QWidget::~QWidget (this=0x2170be0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1676
#18 0x00007f1ea92d32a5 in KMainWindow::~KMainWindow (this=0x2170be0, __in_chrg=<optimized out>) at ../../kdeui/widgets/kmainwindow.cpp:467
#19 0x00007f1ea856e8da in KMMainWin::~KMMainWin (this=0x2170be0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../kmail/kmmainwin.cpp:95
#20 0x00007f1ea856e9c9 in KMMainWin::~KMMainWin (this=0x2170be0, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../kmail/kmmainwin.cpp:116
#21 0x00007f1ea74cb478 in QObject::event (this=0x2170be0, e=<optimized out>) at kernel/qobject.cpp:1176
#22 0x00007f1ea7a24b7b in QWidget::event (this=0x2170be0, event=0x37200b0) at kernel/qwidget.cpp:8821
#23 0x00007f1ea7dfec4b in QMainWindow::event (this=0x2170be0, event=0x37200b0) at widgets/qmainwindow.cpp:1478
#24 0x00007f1ea93114d8 in KXmlGuiWindow::event (this=0x2170be0, ev=0x37200b0) at ../../kdeui/xmlgui/kxmlguiwindow.cpp:126
#25 0x00007f1ea79d4894 in notify_helper (e=0x37200b0, receiver=0x2170be0, this=0x1f37430) at kernel/qapplication.cpp:4559
#26 QApplicationPrivate::notify_helper (this=0x1f37430, receiver=0x2170be0, e=0x37200b0) at kernel/qapplication.cpp:4531
#27 0x00007f1ea79d9713 in QApplication::notify (this=0x7fff49d57ea0, receiver=0x2170be0, e=0x37200b0) at kernel/qapplication.cpp:4420
#28 0x00007f1ea92159e6 in KApplication::notify (this=0x7fff49d57ea0, receiver=0x2170be0, event=0x37200b0) at ../../kdeui/kernel/kapplication.cpp:311
#29 0x00007f1ea74b1e9c in QCoreApplication::notifyInternal (this=0x7fff49d57ea0, receiver=0x2170be0, event=0x37200b0) at kernel/qcoreapplication.cpp:876
#30 0x00007f1ea74b5c6a in sendEvent (event=0x37200b0, receiver=0x2170be0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1ee3220) at kernel/qcoreapplication.cpp:1500
#32 0x00007f1ea74e0f93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#33 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#34 0x00007f1e9f3f5d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f1e9f3f60a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f1e9f3f6164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f1ea74e13bf in QEventDispatcherGlib::processEvents (this=0x1ee4b00, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#38 0x00007f1ea7a7cd5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007f1ea74b0c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007f1ea74b0ed7 in QEventLoop::exec (this=0x7fff49d57d80, flags=...) at kernel/qeventloop.cpp:204
#41 0x00007f1ea74b5f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#42 0x0000000000402bd3 in main (argc=<optimized out>, argv=<optimized out>) at ../../kmail/main.cpp:145

Possible duplicates by query: bug 302223, bug 301065, bug 300859, bug 296497, bug 296294.

Reported using DrKonqi