Application: krita (2.4 Beta 3)
KDE Platform Version: 4.6.5 (4.6.5) (Compiled from sources)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

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

open filters menu, select Pixelize and change 10 horizontal and vertical to another values.

-- Backtrace:
Application: Krita (krita), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2bb65937c0 (LWP 3887))]

Thread 11 (Thread 0x7f2ba151b700 (LWP 3889)):
#0  0x00007f2badb73f03 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2bacda8104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2bacda89f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2ba1e7ac44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f2bacdcf3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f2b80399700 (LWP 3905)):
#0  0x00007f2badb79143 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2bb5d0a32c in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timeval const*) () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5d0f3d0 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timeval*) () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb5d1004a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f2bb5ce1882 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f2bb5ce1abc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f2bb5bf8924 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f2bb5cc3c2f in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f2b7fb98700 (LWP 3910)):
#0  0x00007f2bad888bac in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2bb5bfb82b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5bf8235 in QSemaphore::acquire(int) () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb4b1f09e in KisTileDataPooler::waitForWork (this=0x6c77670) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/tiles3/kis_tile_data_pooler.cc:162
#4  0x00007f2bb4b1f784 in KisTileDataPooler::run (this=0x6c77670) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/tiles3/kis_tile_data_pooler.cc:184
#5  0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#6  0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#7  0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f2b7f397700 (LWP 3911)):
#0  0x00007f2bad888bac in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2bb5bfb82b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5bf8469 in QSemaphore::tryAcquire(int, int) () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb4b3fd0a in KisTileDataSwapper::run (this=0x6c776a8) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/tiles3/swap/kis_tile_data_swapper.cpp:92
#4  0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f2b7cb8a700 (LWP 3922)):
#0  0x00007f2bad888bac in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2bb5bfb82b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2baf6237d4 in ?? () from /usr/lib/libQtGui.so.4
#3  0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#5  0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f2b77fff700 (LWP 3923)):
#0  0x00007f2badb79143 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2bb5d0a32c in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timeval const*) () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5d0f3d0 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timeval*) () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb5d1004a in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f2bb5ce1882 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f2bb5ce1abc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f2bb5bf8924 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f2bb5cc3c2f in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f2b777fe700 (LWP 5150)):
#0  0x00007f2bad888bac in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2bb5bfa2b3 in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5bf6d05 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb4bbd4c2 in QMutexLocker (this=<value optimized out>) at /usr/include/qt4/QtCore/qmutex.h:102
#4  KisSimpleUpdateQueue::optimize (this=<value optimized out>) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_simple_update_queue.cpp:219
#5  0x00007f2bb4b16e7c in KisUpdateScheduler::qt_metacall (this=0x6c73ba0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b777fdba0) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_update_scheduler.cpp:78
#6  0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#7  0x00007f2bb4b16f94 in KisUpdaterContext::qt_metacall (this=0x6d12ef0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b777fdc80) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_updater_context.cpp:80
#8  0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#9  0x00007f2bb4b1abb2 in KisUpdateJobItem::run (this=0x6d13bb0) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/../../../calligra-src/krita/image/kis_update_job_item.h:65
#10 0x00007f2bb5bf0188 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#12 0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#14 0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#15 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f2b7288e700 (LWP 5151)):
#0  0x00007f2bad888bac in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2bb5bfa2b3 in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5bf6d05 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb4bbd4c2 in QMutexLocker (this=<value optimized out>) at /usr/include/qt4/QtCore/qmutex.h:102
#4  KisSimpleUpdateQueue::optimize (this=<value optimized out>) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_simple_update_queue.cpp:219
#5  0x00007f2bb4b16e7c in KisUpdateScheduler::qt_metacall (this=0x6c73ba0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b7288dba0) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_update_scheduler.cpp:78
#6  0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#7  0x00007f2bb4b16f94 in KisUpdaterContext::qt_metacall (this=0x6d12ef0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b7288dc80) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_updater_context.cpp:80
#8  0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#9  0x00007f2bb4b1abb2 in KisUpdateJobItem::run (this=0x6d13e50) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/../../../calligra-src/krita/image/kis_update_job_item.h:65
#10 0x00007f2bb5bf0188 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#12 0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#14 0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#15 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f2b7e395700 (LWP 5152)):
[KCrash Handler]
#6  0x00007f2bb5c16d77 in qHash(QString const&) () from /usr/lib/libQtCore.so.4
#7  0x00007f2bb4b1ac61 in QHash<QString, KisSharedPtr<KisFilter> >::findNode (this=0x29ddc20, akey=..., ahp=0x0) at /usr/include/qt4/QtCore/qhash.h:880
#8  0x00007f2bb4bad46e in value (this=0x16c45e00, rect=..., pos=KisNode::N_FILTHY) at /usr/include/qt4/QtCore/qhash.h:607
#9  value (this=0x16c45e00, rect=..., pos=KisNode::N_FILTHY) at /home/ramon/source-to-compile/calligra/calligra-src/interfaces/KoGenericRegistry.h:130
#10 KisFilterMask::changeRect (this=0x16c45e00, rect=..., pos=KisNode::N_FILTHY) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_filter_mask.cpp:163
#11 0x00007f2bb4be0f30 in KisLayer::masksChangeRect (this=<value optimized out>, masks=<value optimized out>, requestedRect=<value optimized out>, rectVariesFlag=@0x7f2b7e39492f) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_layer.cc:340
#12 0x00007f2bb4be103a in KisLayer::changeRect (this=0x15a476d0, rect=..., pos=<value optimized out>) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_layer.cc:502
#13 0x00007f2bb4bbe3c3 in calculateChecksum (this=0x6d12eb0, updaterContext=...) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_base_rects_walker.h:284
#14 checksumValid (this=0x6d12eb0, updaterContext=...) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_base_rects_walker.h:97
#15 KisSimpleUpdateQueue::processOneJob (this=0x6d12eb0, updaterContext=...) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_simple_update_queue.cpp:96
#16 0x00007f2bb4bbe95b in KisSimpleUpdateQueue::processQueue (this=0x6d12eb0, updaterContext=...) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_simple_update_queue.cpp:80
#17 0x00007f2bb4bc3252 in KisUpdateScheduler::tryProcessUpdatesQueue (this=0x6c73ba0) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_update_scheduler.cpp:304
#18 0x00007f2bb4bc3508 in KisUpdateScheduler::processQueues (this=0x6c73ba0) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_update_scheduler.cpp:265
#19 0x00007f2bb4b16e64 in KisUpdateScheduler::qt_metacall (this=0x6c73ba0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b7e394ba0) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_update_scheduler.cpp:79
#20 0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#21 0x00007f2bb4b16f48 in KisUpdaterContext::qt_metacall (this=0x6d12ef0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b7e394c80) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_updater_context.cpp:82
#22 0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#23 0x00007f2bb4b1abba in KisUpdateJobItem::run (this=0x6d13570) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/../../../calligra-src/krita/image/kis_update_job_item.h:66
#24 0x00007f2bb5bf0188 in ?? () from /usr/lib/libQtCore.so.4
#25 0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#26 0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#27 0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#28 0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#29 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2b7db94700 (LWP 5153)):
#0  0x00007f2bad888bac in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f2bb5bfa2b3 in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007f2bb5bf6d05 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#3  0x00007f2bb4bbd4c2 in QMutexLocker (this=<value optimized out>) at /usr/include/qt4/QtCore/qmutex.h:102
#4  KisSimpleUpdateQueue::optimize (this=<value optimized out>) at /home/ramon/source-to-compile/calligra/calligra-src/krita/image/kis_simple_update_queue.cpp:219
#5  0x00007f2bb4b16e7c in KisUpdateScheduler::qt_metacall (this=0x6c73ba0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b7db93ba0) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_update_scheduler.cpp:78
#6  0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#7  0x00007f2bb4b16f94 in KisUpdaterContext::qt_metacall (this=0x6d12ef0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7f2b7db93c80) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/moc_kis_updater_context.cpp:80
#8  0x00007f2bb5cf75f8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#9  0x00007f2bb4b1abb2 in KisUpdateJobItem::run (this=0x6d13910) at /home/ramon/source-to-compile/calligra/calligra-build/krita/image/../../../calligra-src/krita/image/kis_update_job_item.h:65
#10 0x00007f2bb5bf0188 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007f2bb5bfb175 in ?? () from /usr/lib/libQtCore.so.4
#12 0x00007f2bb3ffe853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x00007f2bad883d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#14 0x00007f2badb8104d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#15 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2bb65937c0 (LWP 3887)):
#0  0x00007f2badb73f03 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f2ba7dc2512 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2ba7dc3b3f in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2bb3c668ad in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#4  0x00007f2bb3c4a365 in XGetImage () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007f2bb3c4a5c1 in XGetSubImage () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007f2ba028c862 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#7  0x00007f2ba024f92a in gdk_drawable_copy_to_image () from /usr/lib/libgdk-x11-2.0.so.0
#8  0x00007f2ba024f92a in gdk_drawable_copy_to_image () from /usr/lib/libgdk-x11-2.0.so.0
#9  0x00007f2ba025afe2 in gdk_pixbuf_get_from_drawable () from /usr/lib/libgdk-x11-2.0.so.0
#10 0x00007f2baf4b364d in ?? () from /usr/lib/libQtGui.so.4
#11 0x00007f2baf49d77f in QGtkStyle::drawPrimitive(QStyle::PrimitiveElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib/libQtGui.so.4
#12 0x00007f2baf4a5936 in QGtkStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () from /usr/lib/libQtGui.so.4
#13 0x00007f2baf4fedc5 in QCheckBox::paintEvent(QPaintEvent*) () from /usr/lib/libQtGui.so.4
#14 0x00007f2baf17ac7a in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#15 0x00007f2baf1299f4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#16 0x00007f2baf12e3ba in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x00007f2bafe4d6c6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#18 0x00007f2bb5ce249c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#19 0x00007f2baf177acd in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#20 0x00007f2baf1786e2 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#21 0x00007f2baf17780c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/libQtGui.so.4
#22 0x00007f2baf33e9eb in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f2baf16df60 in QWidgetPrivate::syncBackingStore() () from /usr/lib/libQtGui.so.4
#24 0x00007f2baf17b194 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00007f2baf1299f4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x00007f2baf12e3ba in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#27 0x00007f2bafe4d6c6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0x00007f2bb5ce249c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#29 0x00007f2baf33b618 in ?? () from /usr/lib/libQtGui.so.4
#30 0x00007f2baf16d7f8 in QWidget::repaint(QRect const&) () from /usr/lib/libQtGui.so.4
#31 0x00007f2baf16d8b3 in QWidget::repaint() () from /usr/lib/libQtGui.so.4
#32 0x00007f2baf4ec488 in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f2baf4ec71c in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#34 0x00007f2baf17acc8 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#35 0x00007f2baf1299f4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#36 0x00007f2baf12edc3 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#37 0x00007f2bafe4d6c6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#38 0x00007f2bb5ce249c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#39 0x00007f2baf12aa1d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#40 0x00007f2baf1ac190 in ?? () from /usr/lib/libQtGui.so.4
#41 0x00007f2baf1aaab7 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#42 0x00007f2baf1d4224 in ?? () from /usr/lib/libQtGui.so.4
#43 0x00007f2bb5ce1882 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#44 0x00007f2bb5ce1abc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#45 0x00007f2bb5ce5ecb in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#46 0x00007f2bb60cca3d in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /home/ramon/source-to-compile/calligra/calligra-src/krita/main.cc:71
#47 0x00007f2badab9eff in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#48 0x00000000004008c9 in _start ()

Reported using DrKonqi