Application: kontact (4.8.0)
KDE Platform Version: 4.8.1 (4.8.1)
Qt Version: 4.8.0
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
"when?" 
more like before the crash happened.
anyway: i wanted to send a new mail, but closed and discarded the new mail. 
then it crashed.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
__lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
[Current thread is 1 (Thread 0x7f16190b57c0 (LWP 2941))]

Thread 7 (Thread 0x7f15fd924700 (LWP 2942)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f16158eec2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f16158eed59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f16110bbefc in start_thread (arg=0x7f15fd924700) at pthread_create.c:304
#4  0x00007f16165fe59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f15fd013700 (LWP 2943)):
#0  0x00007f1610c10370 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1610bea419 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1616d6cc06 in QEventDispatcherGlib::processEvents (this=0x15f4230, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#3  0x00007f1616d3c3e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007f1616d3c637 in QEventLoop::exec (this=0x7f15fd012dc0, flags=...) at kernel/qeventloop.cpp:204
#5  0x00007f1616c3c067 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#6  0x00007f1616c3f08b in QThreadPrivate::start (arg=0x15f3b00) at thread/qthread_unix.cpp:298
#7  0x00007f16110bbefc in start_thread (arg=0x7f15fd013700) at pthread_create.c:304
#8  0x00007f16165fe59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f15b0d5e700 (LWP 2945)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f161659b62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f16165999c1 in __GI___libc_free (mem=0x7f16168b71c0) at malloc.c:3736
#3  0x00007f1610be54e1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1616d6c937 in QEventDispatcherGlib::~QEventDispatcherGlib (this=0x1975bd0, __in_chrg=<optimized out>) at kernel/qeventdispatcher_glib.cpp:375
#5  0x00007f1616d6cb19 in QEventDispatcherGlib::~QEventDispatcherGlib (this=0x1975bd0, __in_chrg=<optimized out>) at kernel/qeventdispatcher_glib.cpp:403
#6  0x00007f1616c3df35 in QThreadPrivate::finish (arg=<optimized out>) at thread/qthread_unix.cpp:330
#7  0x00007f1616c3f093 in ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:545
#8  ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at thread/qthread_unix.cpp:716
#9  QThreadPrivate::start (arg=0x7f16170944e0) at thread/qthread_unix.cpp:273
#10 0x00007f16110bbefc in start_thread (arg=0x7f15b0d5e700) at pthread_create.c:304
#11 0x00007f16165fe59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f15ad00f700 (LWP 3101)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f161659b62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f16165999c1 in __GI___libc_free (mem=0x7f16168b71c0) at malloc.c:3736
#3  0x00007f1616d6c2a5 in socketNotifierSourceCheck (source=0x2242f60) at kernel/qeventdispatcher_glib.cpp:92
#4  0x00007f1610be9734 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1610be9f82 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f1610bea429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f1616d6cb9f in QEventDispatcherGlib::processEvents (this=0x1d30140, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#8  0x00007f1616d3c3e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#9  0x00007f1616d3c637 in QEventLoop::exec (this=0x7f15ad00ed90, flags=...) at kernel/qeventloop.cpp:204
#10 0x00007f1616c3c067 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#11 0x00007f1616d1c17f in QInotifyFileSystemWatcherEngine::run (this=0x1e98bd0) at io/qfilesystemwatcher_inotify.cpp:248
#12 0x00007f1616c3f08b in QThreadPrivate::start (arg=0x1e98bd0) at thread/qthread_unix.cpp:298
#13 0x00007f16110bbefc in start_thread (arg=0x7f15ad00f700) at pthread_create.c:304
#14 0x00007f16165fe59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f15a9196700 (LWP 21167)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216
#1  0x00007f1616c3f4ff in wait (time=30000, this=0x1b8beb0) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1b8be28, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f1616c3267f in QThreadPoolThread::run (this=0x1b9fe20) at concurrent/qthreadpool.cpp:141
#4  0x00007f1616c3f08b in QThreadPrivate::start (arg=0x1b9fe20) at thread/qthread_unix.cpp:298
#5  0x00007f16110bbefc in start_thread (arg=0x7f15a9196700) at pthread_create.c:304
#6  0x00007f16165fe59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f15ac80e700 (LWP 21171)):
[KCrash Handler]
#6  0x00007f1616595a14 in malloc_consolidate (av=0x7f16168b71c0) at malloc.c:5161
#7  0x00007f1616596a4f in malloc_consolidate (av=0x7f16168b71c0) at malloc.c:5115
#8  _int_malloc (av=0x7f16168b71c0, bytes=65536) at malloc.c:4373
#9  0x00007f16165993cd in __GI___libc_malloc (bytes=65536) at malloc.c:3660
#10 0x00007f1616c41088 in QByteArray::realloc (this=0x25f3bb8, alloc=65504) at tools/qbytearray.cpp:1452
#11 0x00007f1616c411a9 in QByteArray::resize (this=0x25f3bb8, size=32768) at tools/qbytearray.cpp:1420
#12 0x00007f1611ef0a06 in reserve (bytes=2, this=0x271ccc0) at ../../include/QtCore/private/../../../src/corelib/tools/qringbuffer_p.h:158
#13 QAbstractSocket::writeData (this=<optimized out>, data=0x7f15ac80d5ec "\021", size=2) at socket/qabstractsocket.cpp:2315
#14 0x00007f1616cd04af in QIODevice::write (this=0x39056b0, data=0x7f15ac80d5ec "\021", maxSize=<optimized out>) at io/qiodevice.cpp:1370
#15 0x00007f160aa1d095 in ?? () from /usr/lib/libsopranoclient.so.1
#16 0x00007f160aa2328a in ?? () from /usr/lib/libsopranoclient.so.1
#17 0x00007f160aa24a03 in ?? () from /usr/lib/libsopranoclient.so.1
#18 0x00007f160f1a10b2 in Nepomuk::MainModel::executeQuery (this=0x1ac88e0, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at ../../nepomuk/core/nepomukmainmodel.cpp:212
#19 0x00007f160f191083 in Nepomuk::ResourceData::load (this=0x22a6060) at ../../nepomuk/core/resourcedata.cpp:417
#20 0x00007f160f19195c in Nepomuk::ResourceData::property (this=0x22a6060, uri=...) at ../../nepomuk/core/resourcedata.cpp:265
#21 0x00007f160f1a5893 in Nepomuk::Resource::property (this=0x7f15ac80dcc0, uri=...) at ../../nepomuk/core/resource.cpp:301
#22 0x00007f15b39537da in ?? () from /usr/lib/libmessagecore.so.4
#23 0x00007f1616c325b2 in QThreadPoolThread::run (this=0x22b2580) at concurrent/qthreadpool.cpp:107
#24 0x00007f1616c3f08b in QThreadPrivate::start (arg=0x22b2580) at thread/qthread_unix.cpp:298
#25 0x00007f16110bbefc in start_thread (arg=0x7f15ac80e700) at pthread_create.c:304
#26 0x00007f16165fe59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#27 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f16190b57c0 (LWP 2941)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f161659b62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f16165999c1 in __GI___libc_free (mem=0x7f16168b71c0) at malloc.c:3736
#3  0x00007f161376691e in qMetaTypeDeleteHelper<QDBusMessage> (t=0x7f15f8059fe0) at ../../include/QtCore/../../src/corelib/kernel/qmetatype.h:134
#4  0x00007f1616d4e009 in QMetaCallEvent::~QMetaCallEvent (this=0x7f15f80fe180, __in_chrg=<optimized out>) at kernel/qobject.cpp:509
#5  0x00007f1616d4e069 in QMetaCallEvent::~QMetaCallEvent (this=0x7f15f80fe180, __in_chrg=<optimized out>) at kernel/qobject.cpp:518
#6  0x00007f1616d413d3 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x13f7380) at kernel/qcoreapplication.cpp:1516
#7  0x00007f1616d6c773 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#8  postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#9  0x00007f1610be9a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f1610bea258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f1610bea429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f1616d6cb9f in QEventDispatcherGlib::processEvents (this=0x13f8c10, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007f16177d621e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#14 0x00007f1616d3c3e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#15 0x00007f1616d3c637 in QEventLoop::exec (this=0x7fff02a163e0, flags=...) at kernel/qeventloop.cpp:204
#16 0x00007f1616d416c7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#17 0x0000000000403629 in ?? ()
#18 0x00007f161653c30d in __libc_start_main (main=0x402b40, argc=1, ubp_av=0x7fff02a16a78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff02a16a68) at libc-start.c:226
#19 0x0000000000403b71 in _start ()

Possible duplicates by query: bug 295054, bug 284552.

Reported using DrKonqi