Bug 309403

Application: kontact (4.9.2)
KDE Platform Version: 4.9.2
Qt Version: 4.8.3
Operating System: Linux 3.5.0-17-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:

With preview panel showing a html message, I closed kontact. The window disappeared and after less than a second, it crashed

The crash can be reproduced every 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 0x7f89ac8c77c0 (LWP 15465))]

Thread 3 (Thread 0x7f89a4e72700 (LWP 15466)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f89bde39b2d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f89bde39c39 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f89b9388e9a in start_thread (arg=0x7f89a4e72700) at pthread_create.c:308
#4  0x00007f89beb64cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f8956ec1700 (LWP 15471)):
#0  0x00007f89beb59303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f89b8eb9d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f89b8eb9ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f89bf2d9c16 in QEventDispatcherGlib::processEvents (this=0x7f89500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f89bf2aa2bf in QEventLoop::processEvents (this=this@entry=0x7f8956ec0d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f89bf2aa548 in QEventLoop::exec (this=0x7f8956ec0d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f89bf1abb10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f89bf28a9af in QInotifyFileSystemWatcherEngine::run (this=0x1bd8100) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f89bf1aeaec in QThreadPrivate::start (arg=0x1bd8100) at thread/qthread_unix.cpp:338
#9  0x00007f89b9388e9a in start_thread (arg=0x7f8956ec1700) at pthread_create.c:308
#10 0x00007f89beb64cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f89ac8c77c0 (LWP 15465)):
[KCrash Handler]
#6  0x00007f89b746d627 in lockInline (this=0x1b80338) at /usr/include/qt4/QtCore/qmutex.h:187
#7  QMutexLocker (m=0x1b80338, this=<synthetic pointer>) at /usr/include/qt4/QtCore/qmutex.h:109
#8  Nepomuk::Resource::~Resource (this=0x7f893c0012d0, __in_chrg=<optimized out>) at ../../nepomuk/core/resource.cpp:142
#9  0x00007f89b746d8d9 in Nepomuk::Resource::~Resource (this=0x7f893c0012d0, __in_chrg=<optimized out>) at ../../nepomuk/core/resource.cpp:147
#10 0x00007f89bf2bc1ca in QMetaCallEvent::~QMetaCallEvent (this=0x7f893c0031a0, __in_chrg=<optimized out>) at kernel/qobject.cpp:509
#11 0x00007f89bf2bc239 in QMetaCallEvent::~QMetaCallEvent (this=0x7f893c0031a0, __in_chrg=<optimized out>) at kernel/qobject.cpp:518
#12 0x00007f89bf2afb6f in QCoreApplication::removePostedEvents (receiver=<optimized out>, eventType=0) at kernel/qcoreapplication.cpp:1669
#13 0x00007f89bf2bf7ab in QObjectPrivate::~QObjectPrivate (this=0x1d4d9e0, __in_chrg=<optimized out>) at kernel/qobject.cpp:171
#14 0x00007f89bf2bf819 in QObjectPrivate::~QObjectPrivate (this=0x1d4d9e0, __in_chrg=<optimized out>) at kernel/qobject.cpp:186
#15 0x00007f89bf2c1ffc in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#16 ~QScopedPointer (this=0x19e3e58, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#17 QObject::~QObject (this=0x19e3e50, __in_chrg=<optimized out>) at kernel/qobject.cpp:817
#18 0x00007f89b7473399 in Nepomuk::ResourceWatcher::~ResourceWatcher (this=0x19e3e50, __in_chrg=<optimized out>) at ../../nepomuk/core/resourcewatcher.cpp:81
#19 0x00007f89bf2be182 in QObjectPrivate::deleteChildren (this=this@entry=0x1b80cf0) at kernel/qobject.cpp:1908
#20 0x00007f89bf2c1fc6 in QObject::~QObject (this=0x1ae1430, __in_chrg=<optimized out>) at kernel/qobject.cpp:927
#21 0x00007f89b7461b29 in Nepomuk::ResourceManager::~ResourceManager (this=0x1ae1430, __in_chrg=<optimized out>) at ../../nepomuk/core/resourcemanager.cpp:289
#22 0x00007f89bf2be182 in QObjectPrivate::deleteChildren (this=this@entry=0x14cb340) at kernel/qobject.cpp:1908
#23 0x00007f89bf2c1fc6 in QObject::~QObject (this=0x7fff6a17ef60, __in_chrg=<optimized out>) at kernel/qobject.cpp:927
#24 0x00007f89bfc96211 in QApplication::~QApplication (this=0x7fff6a17ef60, __in_chrg=<optimized out>) at kernel/qapplication.cpp:1100
#25 0x00000000004033ae in main (argc=1, argv=0x7fff6a17f0a8) at ../../../kontact/src/main.cpp:222

Reported using DrKonqi