Application: krita (2.4.0)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-29-generic x86_64
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
I was painting a quite a big image (6000x4000 pixels). Maybe it had something to do with it.

-- Backtrace:
Application: Krita (krita), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f40496ff780 (LWP 3116))]

Thread 8 (Thread 0x7f4030ba9700 (LWP 3119)):
#0  0x00007f4048c78b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f4041e34036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4041e3449a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4030bae98b in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#4  0x00007f4041e559e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4042300e9a in start_thread (arg=0x7f4030ba9700) at pthread_create.c:308
#6  0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f402bdfa700 (LWP 3120)):
#0  0x00007f4048c770bd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f4041e6e8cf in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4041e33ba4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4041e33fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4041e3449a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4037b04406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f4041e559e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4042300e9a in start_thread (arg=0x7f402bdfa700) at pthread_create.c:308
#8  0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f4010797700 (LWP 3137)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f4046bbb4db in wait (time=18446744073709551615, this=0x9431940) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x94318f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f4046bb7314 in QSemaphore::acquire (this=0x9431640, n=1) at thread/qsemaphore.cpp:144
#4  0x00007f4020986c8e in KisTileDataPooler::waitForWork (this=0x9431630) at /build/buildd/calligra-2.4.0/krita/image/tiles3/kis_tile_data_pooler.cc:162
#5  0x00007f4020987374 in KisTileDataPooler::run (this=0x9431630) at /build/buildd/calligra-2.4.0/krita/image/tiles3/kis_tile_data_pooler.cc:184
#6  0x00007f4046bbafcb in QThreadPrivate::start (arg=0x9431630) at thread/qthread_unix.cpp:298
#7  0x00007f4042300e9a in start_thread (arg=0x7f4010797700) at pthread_create.c:308
#8  0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f400ff96700 (LWP 3138)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f4046bbb4db in wait (time=18446744073709551615, this=0x9431cd0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x9431c80, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f4046bb7759 in QSemaphore::tryAcquire (this=0x94319b0, n=1, timeout=-1) at thread/qsemaphore.cpp:221
#4  0x00007f40209a7e9a in KisTileDataSwapper::run (this=0x9431668) at /build/buildd/calligra-2.4.0/krita/image/tiles3/swap/kis_tile_data_swapper.cpp:92
#5  0x00007f4046bbafcb in QThreadPrivate::start (arg=0x9431668) at thread/qthread_unix.cpp:298
#6  0x00007f4042300e9a in start_thread (arg=0x7f400ff96700) at pthread_create.c:308
#7  0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f400e4a4700 (LWP 3145)):
#0  0x00007f4048c7d823 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f4046ce6366 in qt_safe_select (nfds=31, fdread=0x7f3ff8000ac8, fdwrite=0x7f3ff8000d60, fdexcept=0x7f3ff8000ff8, orig_timeout=<optimized out>) at kernel/qcore_unix.cpp:83
#2  0x00007f4046ceb7b2 in QEventDispatcherUNIXPrivate::doSelect (this=0x7f3ff8000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007f4046cebca3 in QEventDispatcherUNIX::processEvents (this=0x7f3ff80008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x00007f4046cb8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f4046cb8ed7 in QEventLoop::exec (this=0x7f400e4a3dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f4046bb7fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f4046c989ff in QInotifyFileSystemWatcherEngine::run (this=0x9919660) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f4046bbafcb in QThreadPrivate::start (arg=0x9919660) at thread/qthread_unix.cpp:298
#9  0x00007f4042300e9a in start_thread (arg=0x7f400e4a4700) at pthread_create.c:308
#10 0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f4005662700 (LWP 3158)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f4046bbb4db in wait (time=18446744073709551615, this=0x2e6703b0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2e66ff30, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f4047bbe354 in QFileInfoGatherer::run (this=0x2e66ff20) at dialogs/qfileinfogatherer.cpp:214
#4  0x00007f4046bbafcb in QThreadPrivate::start (arg=0x2e66ff20) at thread/qthread_unix.cpp:298
#5  0x00007f4042300e9a in start_thread (arg=0x7f4005662700) at pthread_create.c:308
#6  0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3fef8e5700 (LWP 3159)):
#0  0x00007f4048c7d823 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f4046ce6366 in qt_safe_select (nfds=41, fdread=0x7f3ff4000ac8, fdwrite=0x7f3ff4000d60, fdexcept=0x7f3ff4000ff8, orig_timeout=<optimized out>) at kernel/qcore_unix.cpp:83
#2  0x00007f4046ceb7b2 in QEventDispatcherUNIXPrivate::doSelect (this=0x7f3ff4000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007f4046cebca3 in QEventDispatcherUNIX::processEvents (this=0x7f3ff40008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x00007f4046cb8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f4046cb8ed7 in QEventLoop::exec (this=0x7f3fef8e4dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f4046bb7fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f4046c989ff in QInotifyFileSystemWatcherEngine::run (this=0x2e670650) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f4046bbafcb in QThreadPrivate::start (arg=0x2e670650) at thread/qthread_unix.cpp:298
#9  0x00007f4042300e9a in start_thread (arg=0x7f3fef8e5700) at pthread_create.c:308
#10 0x00007f4048c844bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f40496ff780 (LWP 3116)):
[KCrash Handler]
#6  data (this=0x8) at ../../include/QtCore/../../src/corelib/tools/qshareddata.h:145
#7  QFont::QFont (this=0x7fff0edbbbe0, font=...) at text/qfont.cpp:846
#8  0x00007f4016ea929d in ArtisticTextRange::font (this=<optimized out>) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextRange.cpp:64
#9  0x00007f4016ea15b4 in ArtisticTextShape::charExtentsAt (this=<optimized out>, charIndex=<optimized out>) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextShape.cpp:851
#10 0x00007f4016eab99b in ArtisticTextTool::createTextCursorShape (this=0x2ed1f060) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextTool.cpp:684
#11 0x00007f4016eae4f6 in ArtisticTextTool::setTextCursorInternal (this=0x2ed1f060, textCursor=1) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextTool.cpp:674
#12 0x00007f4016eae603 in setTextCursor (textCursor=<optimized out>, this=0x2ed1f060, textShape=<optimized out>) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextTool.cpp:641
#13 ArtisticTextTool::setTextCursor (this=0x2ed1f060, textShape=<optimized out>, textCursor=<optimized out>) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextTool.cpp:632
#14 0x00007f4016eae9ee in keyPressEvent (event=<optimized out>, this=0x2ed1f060) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextTool.cpp:441
#15 ArtisticTextTool::keyPressEvent (this=0x2ed1f060, event=<optimized out>) at /build/buildd/calligra-2.4.0/plugins/artistictextshape/ArtisticTextTool.cpp:347
#16 0x00007f4020e2b4d1 in KisCanvasWidgetBase::processKeyPressEvent (this=0x2e8a4f18, e=0x7fff0edbc5e0) at /build/buildd/calligra-2.4.0/krita/ui/canvas/kis_canvas_widget_base.cpp:272
#17 0x00007f40477051c8 in QWidget::event (this=0x2e8a4ef0, event=0x7fff0edbc5e0) at kernel/qwidget.cpp:8397
#18 0x00007f40476b4894 in notify_helper (e=0x7fff0edbc5e0, receiver=0x2e8a4ef0, this=0x1240ed0) at kernel/qapplication.cpp:4559
#19 QApplicationPrivate::notify_helper (this=0x1240ed0, receiver=0x2e8a4ef0, e=0x7fff0edbc5e0) at kernel/qapplication.cpp:4531
#20 0x00007f40476b9dd5 in QApplication::notify (this=<optimized out>, receiver=<optimized out>, e=0x7fff0edbc5e0) at kernel/qapplication.cpp:4000
#21 0x00007f40483ee9e6 in KApplication::notify (this=0x7fff0edbd370, receiver=0x2e8a4ef0, event=0x7fff0edbc5e0) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x00007f4046cb9e9c in QCoreApplication::notifyInternal (this=0x7fff0edbd370, receiver=0x2e8a4ef0, event=0x7fff0edbc5e0) at kernel/qcoreapplication.cpp:876
#23 0x00007f4047758c49 in QKeyMapper::sendKeyEvent (keyWidget=0x2e8a4ef0, grab=<optimized out>, type=QEvent::KeyPress, code=16777220, modifiers=..., text=..., autorepeat=false, count=1, nativeScanCode=36, nativeVirtualKey=65293, nativeModifiers=0) at kernel/qkeymapper_x11.cpp:1866
#24 0x00007f40477590bb in QKeyMapperPrivate::translateKeyEvent (this=0x12785e0, keyWidget=0x2e8a4ef0, event=0x7fff0edbd0e0, grab=false) at kernel/qkeymapper_x11.cpp:1836
#25 0x00007f4047733637 in QApplication::x11ProcessEvent (this=0x7fff0edbd370, event=0x7fff0edbd0e0) at kernel/qapplication_x11.cpp:3625
#26 0x00007f404775db3a in QEventDispatcherX11::processEvents (this=0x11c5b30, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#27 0x00007f4046cb8c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f4046cb8ed7 in QEventLoop::exec (this=0x7fff0edbd330, flags=...) at kernel/qeventloop.cpp:204
#29 0x00007f4046cbdf67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#30 0x00007f404912021d in kdemain (argc=<optimized out>, argv=<optimized out>) at /build/buildd/calligra-2.4.0/krita/main.cc:71
#31 0x00007f4048bb376d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=1, ubp_av=0x7fff0edbd538, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0edbd528) at libc-start.c:226
#32 0x0000000000400661 in _start ()

Reported using DrKonqi