Application: kontact (4.10.2)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-18-generic x86_64
Distribution: Ubuntu Raring Ringtail (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
I hit reply to a mail, typed my reply, clicked send, CRASH. 

This has now happened twice, seems reproduceable, however the email is still sent.

-- Backtrace:
Application: Kontact (kontact), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f90232687c0 (LWP 6133))]

Thread 5 (Thread 0x7f9004c68700 (LWP 6134)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f901f9ee585 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f901f9ee5d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f901a444f8e in start_thread (arg=0x7f9004c68700) at pthread_create.c:311
#4  0x00007f90207e6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f8fc4465700 (LWP 6135)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f901f734a09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f901fa1ccee in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f901a444f8e in start_thread (arg=0x7f8fc4465700) at pthread_create.c:311
#4  0x00007f90207e6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f8fb6d52700 (LWP 6139)):
#0  0x00007f90207da3cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f9019d821dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9019d82304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9021c0c036 in QEventDispatcherGlib::processEvents (this=0x7f8fb00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f9021bdc38f in QEventLoop::processEvents (this=this@entry=0x7f8fb6d51d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9021bdc618 in QEventLoop::exec (this=this@entry=0x7f8fb6d51d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9021ade410 in QThread::exec (this=this@entry=0x11d64e0) at thread/qthread.cpp:542
#7  0x00007f9021bbdedf in QInotifyFileSystemWatcherEngine::run (this=0x11d64e0) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f9021ae0bec in QThreadPrivate::start (arg=0x11d64e0) at thread/qthread_unix.cpp:338
#9  0x00007f901a444f8e in start_thread (arg=0x7f8fb6d52700) at pthread_create.c:311
#10 0x00007f90207e6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f8fb54c1700 (LWP 6141)):
#0  0x00007f901a447075 in __GI___pthread_mutex_lock (mutex=0x7f8fac000a60) at pthread_mutex_lock.c:95
#1  0x00007f9019dc15c1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9019d8134e in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9019d820b4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9019d82304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9021c0c036 in QEventDispatcherGlib::processEvents (this=0x7f8fac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f9021bdc38f in QEventLoop::processEvents (this=this@entry=0x7f8fb54c0dc0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f9021bdc618 in QEventLoop::exec (this=this@entry=0x7f8fb54c0dc0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f9021ade410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007f9021ae0bec in QThreadPrivate::start (arg=0xcdcc50) at thread/qthread_unix.cpp:338
#10 0x00007f901a444f8e in start_thread (arg=0x7f8fb54c1700) at pthread_create.c:311
#11 0x00007f90207e6e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f90232687c0 (LWP 6133)):
[KCrash Handler]
#6  0x00007f9020724037 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#7  0x00007f9020727698 in __GI_abort () at abort.c:90
#8  0x00007f90207615ab in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f9020874860 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:199
#9  0x00007f902076da46 in malloc_printerr (ptr=0x7607a40, str=0x7f9020874a00 "free(): invalid next size (fast)", action=3) at malloc.c:4902
#10 _int_free (av=<optimized out>, p=0x7607a30, have_lock=0) at malloc.c:3758
#11 0x00007f90211e3835 in QTextLayout::~QTextLayout (this=<optimized out>, __in_chrg=<optimized out>) at text/qtextlayout.cpp:366
#12 0x00007f902120a2cb in free (this=<optimized out>) at text/qtextdocument_p.h:109
#13 ~QFragmentMap (this=0x392f048, __in_chrg=<optimized out>) at ../../include/QtGui/private/../../../src/gui/text/qfragmentmap_p.h:807
#14 QTextDocumentPrivate::~QTextDocumentPrivate (this=0x392ef30, __in_chrg=<optimized out>) at text/qtextdocument_p.cpp:290
#15 0x00007f902120a759 in QTextDocumentPrivate::~QTextDocumentPrivate (this=0x392ef30, __in_chrg=<optimized out>) at text/qtextdocument_p.cpp:298
#16 0x00007f9021bf6f9c in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#17 ~QScopedPointer (this=0x392ef18, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#18 QObject::~QObject (this=0x392ef10, __in_chrg=<optimized out>) at kernel/qobject.cpp:816
#19 0x00007f90211f9d49 in QTextDocument::~QTextDocument (this=0x392ef10, __in_chrg=<optimized out>) at text/qtextdocument.cpp:362
#20 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x392eda0) at kernel/qobject.cpp:1907
#21 0x00007f9021bf6f66 in QObject::~QObject (this=0x392eb80, __in_chrg=<optimized out>) at kernel/qobject.cpp:926
#22 0x00007f90213f0ac3 in ~QTextEditControl (this=0x392eb80, __in_chrg=<optimized out>) at widgets/qtextedit.cpp:82
#23 QTextEditControl::~QTextEditControl (this=0x392eb80, __in_chrg=<optimized out>) at widgets/qtextedit.cpp:82
#24 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x392b3a0) at kernel/qobject.cpp:1907
#25 0x00007f9020fd16dc in QWidget::~QWidget (this=0x3929d70, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#26 0x00007f8fc03fd879 in ?? () from /usr/lib/libkmailprivate.so.4
#27 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x39250c0) at kernel/qobject.cpp:1907
#28 0x00007f9020fd16dc in QWidget::~QWidget (this=0x3925090, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#29 0x00007f9020fd1a29 in QWidget::~QWidget (this=0x3925090, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1705
#30 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x3924760) at kernel/qobject.cpp:1907
#31 0x00007f9020fd16dc in QWidget::~QWidget (this=0x39246d0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#32 0x00007f90213dac19 in QSplitter::~QSplitter (this=0x39246d0, __in_chrg=<optimized out>) at widgets/qsplitter.cpp:1056
#33 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x3924470) at kernel/qobject.cpp:1907
#34 0x00007f9020fd16dc in QWidget::~QWidget (this=0x3924330, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#35 0x00007f90213dac19 in QSplitter::~QSplitter (this=0x3924330, __in_chrg=<optimized out>) at widgets/qsplitter.cpp:1056
#36 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x78fc2c0) at kernel/qobject.cpp:1907
#37 0x00007f9020fd16dc in QWidget::~QWidget (this=0x3d69290, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#38 0x00007f90213dac19 in QSplitter::~QSplitter (this=0x3d69290, __in_chrg=<optimized out>) at widgets/qsplitter.cpp:1056
#39 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x78fc050) at kernel/qobject.cpp:1907
#40 0x00007f9020fd16dc in QWidget::~QWidget (this=0x78fc020, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#41 0x00007f9020fd1a29 in QWidget::~QWidget (this=0x78fc020, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1705
#42 0x00007f9021bf0232 in QObjectPrivate::deleteChildren (this=this@entry=0x587f920) at kernel/qobject.cpp:1907
#43 0x00007f9020fd16dc in QWidget::~QWidget (this=0x587fc90, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#44 0x00007f90226db385 in KMainWindow::~KMainWindow (this=0x587fc90, __in_chrg=<optimized out>) at ../../kdeui/widgets/kmainwindow.cpp:467
#45 0x00007f8fc0426b03 in ?? () from /usr/lib/libkmailprivate.so.4
#46 0x00007f8fc0426d99 in ?? () from /usr/lib/libkmailprivate.so.4
#47 0x00007f9021bf75e8 in QObject::event (this=this@entry=0x587fc90, e=e@entry=0x5220cf0) at kernel/qobject.cpp:1175
#48 0x00007f9020fd01ca in QWidget::event (this=this@entry=0x587fc90, event=event@entry=0x5220cf0) at kernel/qwidget.cpp:8845
#49 0x00007f902139c83b in QMainWindow::event (this=this@entry=0x587fc90, event=event@entry=0x5220cf0) at widgets/qmainwindow.cpp:1478
#50 0x00007f90226d9973 in KMainWindow::event (this=this@entry=0x587fc90, ev=ev@entry=0x5220cf0) at ../../kdeui/widgets/kmainwindow.cpp:1084
#51 0x00007f9022716b68 in KXmlGuiWindow::event (this=0x587fc90, ev=0x5220cf0) at ../../kdeui/xmlgui/kxmlguiwindow.cpp:126
#52 0x00007f9020f838ec in QApplicationPrivate::notify_helper (this=this@entry=0xa5ebe0, receiver=receiver@entry=0x587fc90, e=e@entry=0x5220cf0) at kernel/qapplication.cpp:4567
#53 0x00007f9020f8625b in QApplication::notify (this=this@entry=0x7fff664143b0, receiver=receiver@entry=0x587fc90, e=e@entry=0x5220cf0) at kernel/qapplication.cpp:4428
#54 0x00007f9022626af6 in KApplication::notify (this=0x7fff664143b0, receiver=0x587fc90, event=0x5220cf0) at ../../kdeui/kernel/kapplication.cpp:311
#55 0x00007f9021bdd63e in QCoreApplication::notifyInternal (this=0x7fff664143b0, receiver=receiver@entry=0x587fc90, event=event@entry=0x5220cf0) at kernel/qcoreapplication.cpp:946
#56 0x00007f9021be1171 in sendEvent (event=0x5220cf0, receiver=0x587fc90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#57 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xa156a0) at kernel/qcoreapplication.cpp:1570
#58 0x00007f9021be14a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#59 0x00007f9021c0be83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#60 postEventSourceDispatch (s=0xa4be20) at kernel/qeventdispatcher_glib.cpp:279
#61 0x00007f9019d81f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#62 0x00007f9019d82248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f9019d82304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#64 0x00007f9021c0c016 in QEventDispatcherGlib::processEvents (this=0xa16b60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#65 0x00007f90210291ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#66 0x00007f9021bdc38f in QEventLoop::processEvents (this=this@entry=0x7fff66414220, flags=...) at kernel/qeventloop.cpp:149
#67 0x00007f9021bdc618 in QEventLoop::exec (this=this@entry=0x7fff66414220, flags=...) at kernel/qeventloop.cpp:204
#68 0x00007f9021be1cf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#69 0x00000000004033a9 in ?? ()
#70 0x00007f902070eea5 in __libc_start_main (main=0x402bb0, argc=1, ubp_av=0x7fff664144f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff664144e8) at libc-start.c:260
#71 0x00000000004038e1 in _start ()

Possible duplicates by query: bug 318426, bug 314682, bug 314447, bug 314055, bug 313825.

Reported using DrKonqi