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:
The first time I open it and want to read a newly-received email, Kontact crashes. I had this twice today (and never before).
Kde is set up to run Kontact at startup.

The crash can be reproduced some of the time.

-- 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 0x7f1ab0d987c0 (LWP 3425))]

Thread 5 (Thread 0x7f1aa1045700 (LWP 3475)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x0000003086186c2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x0000003086186d59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f1aabe9aefc in start_thread (arg=0x7f1aa1045700) at pthread_create.c:304
#4  0x00007f1aae5f059d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f1aa072c700 (LWP 3476)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f1aae58d62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f1aae58b9c1 in __GI___libc_free (mem=0x7f1a50000020) at malloc.c:3736
#3  0x00007f1aaea588d4 in QTimerInfoList::unregisterTimer (this=0x16b9410, timerId=335544325) at kernel/qeventdispatcher_unix.cpp:507
#4  0x00007f1aaea45f51 in stop (this=0x16cc390) at kernel/qtimer.cpp:266
#5  QTimer::stop (this=0x16cc390) at kernel/qtimer.cpp:263
#6  0x00007f1aaea46055 in QTimer::timerEvent (this=0x16cc390, e=<optimized out>) at kernel/qtimer.cpp:279
#7  0x00007f1aaea418d9 in QObject::event (this=0x16cc390, e=<optimized out>) at kernel/qobject.cpp:1157
#8  0x00007f1aaf41c104 in notify_helper (e=0x7f1aa072bb50, receiver=0x16cc390, this=0x14c3320) at kernel/qapplication.cpp:4555
#9  QApplicationPrivate::notify_helper (this=0x14c3320, receiver=0x16cc390, e=0x7f1aa072bb50) at kernel/qapplication.cpp:4527
#10 0x00007f1aaf420f83 in QApplication::notify (this=0x7fff7c5145e0, receiver=0x16cc390, e=0x7f1aa072bb50) at kernel/qapplication.cpp:4416
#11 0x00007f1ab014e9a6 in KApplication::notify (this=0x7fff7c5145e0, receiver=0x16cc390, event=0x7f1aa072bb50) at ../../kdeui/kernel/kapplication.cpp:311
#12 0x00007f1aaea285fc in QCoreApplication::notifyInternal (this=0x7fff7c5145e0, receiver=0x16cc390, event=0x7f1aa072bb50) at kernel/qcoreapplication.cpp:876
#13 0x00007f1aaea599a2 in sendEvent (event=0x7f1aa072bb50, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#14 QTimerInfoList::activateTimers (this=0x16b9410) at kernel/qeventdispatcher_unix.cpp:611
#15 0x00007f1aaea5736d in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#16 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#17 0x00007f1aaea57391 in idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:233
#18 0x0000003008844a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x0000003008845258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x0000003008845429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f1aaea57b9f in QEventDispatcherGlib::processEvents (this=0x16b8950, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#22 0x00007f1aaea273e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#23 0x00007f1aaea27637 in QEventLoop::exec (this=0x7f1aa072bdc0, flags=...) at kernel/qeventloop.cpp:204
#24 0x00007f1aae927067 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#25 0x00007f1aae92a08b in QThreadPrivate::start (arg=0x16b8190) at thread/qthread_unix.cpp:298
#26 0x00007f1aabe9aefc in start_thread (arg=0x7f1aa072c700) at pthread_create.c:304
#27 0x00007f1aae5f059d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#28 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1a5603b700 (LWP 3770)):
[KCrash Handler]
#6  malloc_consolidate (av=0x7f1a50000020) at malloc.c:5153
#7  0x00007f1aae588a4f in malloc_consolidate (av=0x7f1a50000020) at malloc.c:5115
#8  _int_malloc (av=0x7f1a50000020, bytes=65536) at malloc.c:4373
#9  0x00007f1aae58b3cd in __GI___libc_malloc (bytes=65536) at malloc.c:3660
#10 0x00007f1aae92c088 in QByteArray::realloc (this=0x23e97f8, alloc=65504) at tools/qbytearray.cpp:1452
#11 0x00007f1aae92c1a9 in QByteArray::resize (this=0x23e97f8, size=32768) at tools/qbytearray.cpp:1420
#12 0x00007f1aac657f84 in reserve (bytes=13, this=0x2414e60) at ../../include/QtCore/private/../../../src/corelib/tools/qringbuffer_p.h:158
#13 QAbstractSocketPrivate::readFromSocket (this=0x2414d00) at socket/qabstractsocket.cpp:1163
#14 0x00007f1aac658604 in QAbstractSocketPrivate::canReadNotification (this=0x2414d00) at socket/qabstractsocket.cpp:625
#15 0x00007f1aac65a6d0 in QAbstractSocket::waitForReadyRead (this=0x240ade8, msecs=600000) at socket/qabstractsocket.cpp:1902
#16 0x00007f1aa96a02c8 in ?? () from /usr/lib/libsopranoclient.so.1
#17 0x00007f1aa96a1a03 in ?? () from /usr/lib/libsopranoclient.so.1
#18 0x00007f1aab3ce0b2 in Nepomuk::MainModel::executeQuery (this=0x1c3b620, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at ../../nepomuk/core/nepomukmainmodel.cpp:212
#19 0x00007f1aab3be083 in Nepomuk::ResourceData::load (this=0x7f1a50076790) at ../../nepomuk/core/resourcedata.cpp:417
#20 0x00007f1aab3be95c in Nepomuk::ResourceData::property (this=0x7f1a50076790, uri=...) at ../../nepomuk/core/resourcedata.cpp:265
#21 0x00007f1aab3d2893 in Nepomuk::Resource::property (this=0x7f1a5603acc0, uri=...) at ../../nepomuk/core/resource.cpp:301
#22 0x00007f1a5b6ce7da in MessageCore::NepomukResourceRetrieverRunnable::run (this=0x2afef20) at ../../messagecore/asyncnepomukresourceretriever.cpp:47
#23 0x00007f1aae91d5b2 in QThreadPoolThread::run (this=0x24107a0) at concurrent/qthreadpool.cpp:107
#24 0x00007f1aae92a08b in QThreadPrivate::start (arg=0x24107a0) at thread/qthread_unix.cpp:298
#25 0x00007f1aabe9aefc in start_thread (arg=0x7f1a5603b700) at pthread_create.c:304
#26 0x00007f1aae5f059d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#27 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1a4c915700 (LWP 3773)):
#0  0x00007f1aae5e4473 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000003008844f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x0000003008845429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1aaea57c06 in QEventDispatcherGlib::processEvents (this=0x1e1bff0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1aaea273e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1aaea27637 in QEventLoop::exec (this=0x7f1a4c914d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1aae927067 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f1aaea0717f in QInotifyFileSystemWatcherEngine::run (this=0x28e9e60) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f1aae92a08b in QThreadPrivate::start (arg=0x28e9e60) at thread/qthread_unix.cpp:298
#9  0x00007f1aabe9aefc in start_thread (arg=0x7f1a4c915700) at pthread_create.c:304
#10 0x00007f1aae5f059d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1ab0d987c0 (LWP 3425)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f1aae58d62f in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f1aae58b9c1 in __GI___libc_free (mem=0x7f1a50000020) at malloc.c:3736
#3  0x00007f1aaea572a5 in socketNotifierSourceCheck (source=0x14c1380) at kernel/qeventdispatcher_glib.cpp:92
#4  0x0000003008844734 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x0000003008844f82 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x0000003008845429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f1aaea57b9f in QEventDispatcherGlib::processEvents (this=0x14b1c80, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#8  0x00007f1aaf4c121e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#9  0x00007f1aaea273e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#10 0x00007f1aaea27637 in QEventLoop::exec (this=0x7fff7c514570, flags=...) at kernel/qeventloop.cpp:204
#11 0x00007f1aaea2c6c7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#12 0x0000000000403629 in main (argc=1, argv=0x7fff7c514c08) at ../../../kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 295709.

Possible duplicates by query: bug 295805, bug 295726, bug 295709, bug 295686, bug 295054.

Reported using DrKonqi