Application: kontact (4.8.0)
KDE Platform Version: 4.8.1 (4.8.1)
Qt Version: 4.8.0
Operating System: Linux 3.2.0-18-generic x86_64
Distribution: Ubuntu precise (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
Browse email folders. Currently I can regularily reproduce this bug by simply reading my mail.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7eff4a5b27c0 (LWP 26329))]

Thread 5 (Thread 0x7eff2d8d0700 (LWP 26330)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007eff46db4dec in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7eff4777dde0) at wtf/FastMalloc.cpp:2495
#2  0x00007eff46db4f19 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1618
#3  0x00007eff4227be9a in start_thread (arg=0x7eff2d8d0700) at pthread_create.c:308
#4  0x00007eff47ae474d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7eff2cfcf700 (LWP 26331)):
#0  0x00007eff47ad734d in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007eff41de974f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff41daebfd in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff41daf0d6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff41daf264 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007eff48258a76 in QEventDispatcherGlib::processEvents (this=0x7eff280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007eff482282d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007eff48228527 in QEventLoop::exec (this=0x7eff2cfcedc0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007eff48127f97 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007eff4812afbb in QThreadPrivate::start (arg=0xe79a10) at thread/qthread_unix.cpp:298
#10 0x00007eff4227be9a in start_thread (arg=0x7eff2cfcf700) at pthread_create.c:308
#11 0x00007eff47ae474d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7efed6d12700 (LWP 26346)):
#0  0x00007eff47ad8d93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007eff41daf136 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff41daf264 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff48258a76 in QEventDispatcherGlib::processEvents (this=0x7efecc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007eff482282d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007eff48228527 in QEventLoop::exec (this=0x7efed6d11d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007eff48127f97 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007eff4820806f in QInotifyFileSystemWatcherEngine::run (this=0x210ae20) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007eff4812afbb in QThreadPrivate::start (arg=0x210ae20) at thread/qthread_unix.cpp:298
#9  0x00007eff4227be9a in start_thread (arg=0x7efed6d12700) at pthread_create.c:308
#10 0x00007eff47ae474d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7efedf60b700 (LWP 26500)):
[KCrash Handler]
#10 malloc_consolidate (av=0x7efed8000020) at malloc.c:4238
#11 0x00007eff47a72156 in malloc_consolidate (av=0x7efed8000020) at malloc.c:4215
#12 _int_malloc (av=0x7efed8000020, bytes=65536) at malloc.c:3532
#13 0x00007eff47a74cd5 in __GI___libc_malloc (bytes=65536) at malloc.c:2924
#14 0x00007eff4812cfb8 in QByteArray::realloc (this=0x7efed80626b8, alloc=65504) at tools/qbytearray.cpp:1452
#15 0x00007eff4812d0d9 in QByteArray::resize (this=0x7efed80626b8, size=32768) at tools/qbytearray.cpp:1420
#16 0x00007eff431258c6 in reserve (bytes=2, this=0x7efed8068790) at ../../include/QtCore/private/../../../src/corelib/tools/qringbuffer_p.h:158
#17 QAbstractSocket::writeData (this=<optimized out>, data=0x7efedf60a5ec "\021", size=2) at socket/qabstractsocket.cpp:2315
#18 0x00007eff481bc3cf in QIODevice::write (this=0x7efed8044b40, data=0x7efedf60a5ec "\021", maxSize=<optimized out>) at io/qiodevice.cpp:1370
#19 0x00007eff3bba92f5 in ?? () from /usr/lib/libsopranoclient.so.1
#20 0x00007eff3bbaf74a in ?? () from /usr/lib/libsopranoclient.so.1
#21 0x00007eff3bbb11c3 in ?? () from /usr/lib/libsopranoclient.so.1
#22 0x00007eff403511bc in Nepomuk::MainModel::executeQuery (this=0x1551120, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at ../../nepomuk/core/nepomukmainmodel.cpp:212
#23 0x00007eff40345843 in Nepomuk::ResourceData::load (this=0x7efed8041020) at ../../nepomuk/core/resourcedata.cpp:417
#24 0x00007eff4034614c in Nepomuk::ResourceData::property (this=0x7efed8041020, uri=...) at ../../nepomuk/core/resourcedata.cpp:265
#25 0x00007eff4035c533 in Nepomuk::Resource::property (this=0x7efedf60acc0, uri=...) at ../../nepomuk/core/resource.cpp:301
#26 0x00007efee3d95c5a in MessageCore::NepomukResourceRetrieverRunnable::run (this=0x2ef45e0) at ../../messagecore/asyncnepomukresourceretriever.cpp:47
#27 0x00007eff4811e4e2 in QThreadPoolThread::run (this=0x16435f0) at concurrent/qthreadpool.cpp:107
#28 0x00007eff4812afbb in QThreadPrivate::start (arg=0x16435f0) at thread/qthread_unix.cpp:298
#29 0x00007eff4227be9a in start_thread (arg=0x7efedf60b700) at pthread_create.c:308
#30 0x00007eff47ae474d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#31 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7eff4a5b27c0 (LWP 26329)):
[KCrash Handler]
#6  deref (this=0x0) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:133
#7  QList<QVariant>::~QList (this=0x7efed800b250, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:731
#8  0x00007eff449b9b7f in ~QDBusMessage (this=<optimized out>, __in_chrg=<optimized out>) at qdbusmessage.cpp:537
#9  QDBusMessage::~QDBusMessage (this=<optimized out>, __in_chrg=<optimized out>) at qdbusmessage.cpp:534
#10 0x00007eff449e392e in qMetaTypeDeleteHelper<QDBusMessage> (t=0x2120620) at ../../include/QtCore/../../src/corelib/kernel/qmetatype.h:134
#11 0x00007eff48239ef9 in QMetaCallEvent::~QMetaCallEvent (this=0x32bd3e0, __in_chrg=<optimized out>) at kernel/qobject.cpp:509
#12 0x00007eff48239f59 in QMetaCallEvent::~QMetaCallEvent (this=0x32bd3e0, __in_chrg=<optimized out>) at kernel/qobject.cpp:518
#13 0x00007eff4822d2c3 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xe3f380) at kernel/qcoreapplication.cpp:1516
#14 0x00007eff482585e3 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#15 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#16 0x00007eff41daedda in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007eff41daf1a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007eff41daf264 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007eff48258a0f in QEventDispatcherGlib::processEvents (this=0xe40c10, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#20 0x00007eff48cc6aae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#21 0x00007eff482282d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#22 0x00007eff48228527 in QEventLoop::exec (this=0x7fff74d82b30, flags=...) at kernel/qeventloop.cpp:204
#23 0x00007eff4822d5b7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#24 0x0000000000403629 in main (argc=1, argv=0x7fff74d831c8) at ../../../kontact/src/main.cpp:218

Possible duplicates by query: bug 295726, bug 295709, bug 295686, bug 295054, bug 284552.

Reported using DrKonqi