Application: kmail (4.13)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.0-26-generic x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
When doing a reply to a mail (in this attached case a reply to all), KDE segfaults. When relaunching it, compose window is open, without my signature.

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb075766800 (LWP 455))]

Thread 5 (Thread 0x7fb04bd64700 (LWP 467)):
#0  0x00007fb06ab56f52 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb06ab570ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb0734627be in QEventDispatcherGlib::processEvents (this=0x7fb0440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#3  0x00007fb0734340af in QEventLoop::processEvents (this=this@entry=0x7fb04bd63da0, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007fb0734343a5 in QEventLoop::exec (this=this@entry=0x7fb04bd63da0, flags=...) at kernel/qeventloop.cpp:204
#5  0x00007fb073330c5f in QThread::exec (this=this@entry=0x1676ea0) at thread/qthread.cpp:537
#6  0x00007fb073415823 in QInotifyFileSystemWatcherEngine::run (this=0x1676ea0) at io/qfilesystemwatcher_inotify.cpp:265
#7  0x00007fb07333332f in QThreadPrivate::start (arg=0x1676ea0) at thread/qthread_unix.cpp:349
#8  0x00007fb070394182 in start_thread (arg=0x7fb04bd64700) at pthread_create.c:312
#9  0x00007fb072ad330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fb0488d1700 (LWP 490)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb06707581d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb067075859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb070394182 in start_thread (arg=0x7fb0488d1700) at pthread_create.c:312
#4  0x00007fb072ad330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fb00366e700 (LWP 494)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb066db620d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb0670a4fd6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb070394182 in start_thread (arg=0x7fb00366e700) at pthread_create.c:312
#4  0x00007fb072ad330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fb002a6d700 (LWP 497)):
#0  0x00007fb06ab9862d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb06ab98989 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb06ab56699 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb06ab56f03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb06ab570ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb0734627be in QEventDispatcherGlib::processEvents (this=0x7faff40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fb0734340af in QEventLoop::processEvents (this=this@entry=0x7fb002a6cde0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fb0734343a5 in QEventLoop::exec (this=this@entry=0x7fb002a6cde0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fb073330c5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007fb07333332f in QThreadPrivate::start (arg=0x1fed960) at thread/qthread_unix.cpp:349
#10 0x00007fb070394182 in start_thread (arg=0x7fb002a6d700) at pthread_create.c:312
#11 0x00007fb072ad330d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fb075766800 (LWP 455)):
[KCrash Handler]
#6  0x00007fb073bbb523 in QTextLayout::position (this=this@entry=0x9b8bfc0) at text/qtextlayout.cpp:876
#7  0x00007fb073bf9277 in QTextDocumentLayoutPrivate::layoutBlock (this=this@entry=0x99cbde0, bl=..., blockPosition=blockPosition@entry=1864, blockFormat=..., layoutStruct=layoutStruct@entry=0x7fff5b76a340, layoutFrom=layoutFrom@entry=190, layoutTo=layoutTo@entry=191, previousBlockFormat=previousBlockFormat@entry=0x7fff5b76a0a0) at text/qtextdocumentlayout.cpp:2572
#8  0x00007fb073c01603 in QTextDocumentLayoutPrivate::layoutFlow (this=this@entry=0x99cbde0, it=..., layoutStruct=layoutStruct@entry=0x7fff5b76a340, layoutFrom=layoutFrom@entry=190, layoutTo=layoutTo@entry=191, width=..., width@entry=...) at text/qtextdocumentlayout.cpp:2415
#9  0x00007fb073bfff9d in QTextDocumentLayoutPrivate::layoutFrame (this=this@entry=0x99cbde0, f=f@entry=0x9842a00, layoutFrom=layoutFrom@entry=190, layoutTo=layoutTo@entry=191, frameWidth=..., frameWidth@entry=..., frameHeight=..., parentY=parentY@entry=...) at text/qtextdocumentlayout.cpp:2156
#10 0x00007fb073c0066d in QTextDocumentLayoutPrivate::layoutFrame (this=this@entry=0x99cbde0, f=f@entry=0x9842a00, layoutFrom=layoutFrom@entry=190, layoutTo=layoutTo@entry=191, parentY=parentY@entry=...) at text/qtextdocumentlayout.cpp:2062
#11 0x00007fb073c03120 in QTextDocumentLayout::doLayout (this=this@entry=0x98442f0, from=from@entry=190, oldLength=oldLength@entry=0, length=length@entry=1) at text/qtextdocumentlayout.cpp:2952
#12 0x00007fb073c0415e in QTextDocumentLayout::documentChanged (this=0x98442f0, from=190, oldLength=0, length=1) at text/qtextdocumentlayout.cpp:2915
#13 0x00007fb073be1c81 in QTextDocumentPrivate::finishEdit (this=this@entry=0x984da80) at text/qtextdocument_p.cpp:1220
#14 0x00007fb073be2076 in QTextDocumentPrivate::insert (this=0x984da80, pos=pos@entry=190, strPos=strPos@entry=2406, strLength=strLength@entry=1, format=format@entry=57) at text/qtextdocument_p.cpp:473
#15 0x00007fb073c0cd1f in QTextCursor::insertText (this=this@entry=0x7fff5b76a820, text=..., _format=...) at text/qtextcursor.cpp:1481
#16 0x00007fb073c0ce8c in QTextCursor::insertImage (this=this@entry=0x7fff5b76a820, format=...) at text/qtextcursor.cpp:2308
#17 0x00007fb06bf309a0 in KPIMTextEdit::TextEdit::loadImage (this=0x9a37830, image=..., matchName=..., resourceName=...) at ../../kpimtextedit/textedit.cpp:530
#18 0x00007fb06ec38dc3 in MessageComposer::ComposerViewBase::collectImages (this=this@entry=0x2465460, root=<optimized out>) at ../../messagecomposer/composer/composerviewbase.cpp:1528
#19 0x00007fb06ec396e8 in MessageComposer::ComposerViewBase::setMessage (this=0x2465460, msg=...) at ../../messagecomposer/composer/composerviewbase.cpp:191
#20 0x00007fb0745d9268 in KMComposeWin::setMessage (this=this@entry=0x96cb640, newMsg=..., lastSignState=lastSignState@entry=false, lastEncryptState=lastEncryptState@entry=false, mayAutoSign=mayAutoSign@entry=true, allowDecryption=allowDecryption@entry=false, isModified=isModified@entry=false) at ../../kmail/editor/kmcomposewin.cpp:1596
#21 0x00007fb0745df197 in KMComposeWin::KMComposeWin (this=this@entry=0x96cb640, aMsg=..., lastSignState=lastSignState@entry=false, lastEncryptState=lastEncryptState@entry=false, context=context@entry=KMail::Composer::Reply, id=id@entry=0, textSelection=..., customTemplate=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../kmail/editor/kmcomposewin.cpp:486
#22 0x00007fb0745dfedb in KMComposeWin::create (msg=..., lastSignState=<optimized out>, lastEncryptState=<optimized out>, context=KMail::Composer::Reply, identity=identity@entry=0, textSelection=..., customTemplate=...) at ../../kmail/editor/kmcomposewin.cpp:182
#23 0x00007fb0745dff0c in KMail::makeComposer (msg=..., lastSignState=<optimized out>, lastEncryptState=<optimized out>, context=<optimized out>, identity=identity@entry=0, textSelection=..., customTemplate=...) at ../../kmail/editor/kmcomposewin.cpp:176
#24 0x00007fb074510d6f in KMReplyCommand::execute (this=0x94c4e30) at ../../kmail/kmcommands.cpp:833
#25 0x00007fb07450b861 in KMCommand::slotPostTransfer (this=0x94c4e30, result=KMCommand::OK) at ../../kmail/kmcommands.cpp:267
#26 0x00007fb07344987a in QMetaObject::activate (sender=sender@entry=0x94c4e30, m=m@entry=0x7fb07489f3e0 <KMCommand::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff5b76b400) at kernel/qobject.cpp:3539
#27 0x00007fb07460495e in KMCommand::messagesTransfered (this=this@entry=0x94c4e30, _t1=_t1@entry=KMCommand::OK) at moc_kmcommands.cpp:116
#28 0x00007fb07450cf33 in KMCommand::slotJobFinished (this=0x94c4e30) at ../../kmail/kmcommands.cpp:367
#29 0x00007fb07344987a in QMetaObject::activate (sender=sender@entry=0x94cc620, m=m@entry=0x7fb074f71600 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fff5b76b5a0) at kernel/qobject.cpp:3539
#30 0x00007fb074be1622 in KJob::result (this=this@entry=0x94cc620, _t1=_t1@entry=0x94cc620) at ./kjob.moc:207
#31 0x00007fb074be1660 in KJob::emitResult (this=0x94cc620) at ../../kdecore/jobs/kjob.cpp:318
#32 0x00007fb07344dc1e in QObject::event (this=0x94cc620, e=<optimized out>) at kernel/qobject.cpp:1194
#33 0x00007fb073966e2c in QApplicationPrivate::notify_helper (this=this@entry=0x127c2d0, receiver=receiver@entry=0x94cc620, e=e@entry=0x96bcbc0) at kernel/qapplication.cpp:4567
#34 0x00007fb07396d4a0 in QApplication::notify (this=this@entry=0x7fff5b76bf80, receiver=receiver@entry=0x94cc620, e=e@entry=0x96bcbc0) at kernel/qapplication.cpp:4353
#35 0x00007fb0751a1baa in KApplication::notify (this=0x7fff5b76bf80, receiver=0x94cc620, event=0x96bcbc0) at ../../kdeui/kernel/kapplication.cpp:311
#36 0x00007fb0734354dd in QCoreApplication::notifyInternal (this=0x7fff5b76bf80, receiver=receiver@entry=0x94cc620, event=event@entry=0x96bcbc0) at kernel/qcoreapplication.cpp:953
#37 0x00007fb073438b3d in sendEvent (event=0x96bcbc0, receiver=0x94cc620) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#38 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x11c5220) at kernel/qcoreapplication.cpp:1577
#39 0x00007fb073438fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#40 0x00007fb073462f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#41 postEventSourceDispatch (s=0x1285000) at kernel/qeventdispatcher_glib.cpp:287
#42 0x00007fb06ab56e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007fb06ab57048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fb06ab570ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fb0734627a1 in QEventDispatcherGlib::processEvents (this=0x11c6b20, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#46 0x00007fb073a08bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#47 0x00007fb0734340af in QEventLoop::processEvents (this=this@entry=0x7fff5b76bbd0, flags=...) at kernel/qeventloop.cpp:149
#48 0x00007fb0734343a5 in QEventLoop::exec (this=this@entry=0x7fff5b76bbd0, flags=...) at kernel/qeventloop.cpp:204
#49 0x00007fb073439b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#50 0x00007fb07396537c in QApplication::exec () at kernel/qapplication.cpp:3828
#51 0x0000000000402d18 in main (argc=<optimized out>, argv=<optimized out>) at ../../kmail/main.cpp:146

Reported using DrKonqi