Application: kmail (4.10.5)
KDE Platform Version: 4.10.5
Qt Version: 4.8.5
Operating System: Linux 3.11.10-100.fc18.x86_64 x86_64
Distribution: "Fedora release 18 (Spherical Cow)"

-- Information about the crash:
- What I was doing when the application crashed:
choosing a message filter to edit (after selecting a from address)

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f828abba880 (LWP 19835))]

Thread 4 (Thread 0x7f82848fd700 (LWP 19839)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x0000003f72ea98d5 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x3f7393dac0 <WTF::pageheap_memory>) at /usr/src/debug/webkit-qtwebkit-23/Source/WTF/wtf/FastMalloc.cpp:2571
#2  0x0000003f72ea9929 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at /usr/src/debug/webkit-qtwebkit-23/Source/WTF/wtf/FastMalloc.cpp:1767
#3  0x0000003a24407d15 in start_thread (arg=0x7f82848fd700) at pthread_create.c:308
#4  0x0000003a23cf253d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 3 (Thread 0x7f8243562700 (LWP 19840)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x0000003f72bee219 in JSC::BlockAllocator::blockFreeingThreadMain (this=0x7f8284066398) at /usr/src/debug/webkit-qtwebkit-23/Source/JavaScriptCore/heap/BlockAllocator.cpp:128
#2  0x0000003f72ed805e in WTF::wtfThreadEntryPoint (param=0x248be90) at /usr/src/debug/webkit-qtwebkit-23/Source/WTF/wtf/ThreadingPthreads.cpp:196
#3  0x0000003a24407d15 in start_thread (arg=0x7f8243562700) at pthread_create.c:308
#4  0x0000003a23cf253d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 2 (Thread 0x7f824285f700 (LWP 19841)):
#0  0x0000003a2440e12d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003a268840df in read (__nbytes=16, __buf=0x7f824285eb10, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x22037c0) at gwakeup.c:212
#3  0x0000003a268478b4 in g_main_context_check (context=context@entry=0x7f82340009a0, max_priority=2147483647, fds=fds@entry=0x7f82340029c0, n_fds=n_fds@entry=1) at gmain.c:3129
#4  0x0000003a26847cc2 in g_main_context_iterate (context=context@entry=0x7f82340009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3287
#5  0x0000003a26847e44 in g_main_context_iteration (context=0x7f82340009a0, may_block=1) at gmain.c:3351
#6  0x00000030d03a6696 in QEventDispatcherGlib::processEvents (this=0x7f82340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#7  0x00000030d03769ff in QEventLoop::processEvents (this=this@entry=0x7f824285ed00, flags=...) at kernel/qeventloop.cpp:149
#8  0x00000030d0376c88 in QEventLoop::exec (this=0x7f824285ed00, flags=...) at kernel/qeventloop.cpp:204
#9  0x00000030d02789a0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:536
#10 0x00000030d027b97c in QThreadPrivate::start (arg=0x2861c10) at thread/qthread_unix.cpp:338
#11 0x0000003a24407d15 in start_thread (arg=0x7f824285f700) at pthread_create.c:308
#12 0x0000003a23cf253d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 1 (Thread 0x7f828abba880 (LWP 19835)):
[KCrash Handler]
#6  shared_ptr (this=0x7fffcc5c72a0) at /usr/include/boost/smart_ptr/shared_ptr.hpp:164
#7  MailCommon::SearchRuleWidgetLister::setRuleList (this=0x74c2bf0, aList=aList@entry=0x507bd58) at /usr/src/debug/kdepim-4.10.5/mailcommon/searchpatternedit.cpp:424
#8  0x0000003f7aaf0fa5 in MailCommon::SearchPatternEdit::setSearchPattern (this=0x74c1860, aPattern=0x507bd58) at /usr/src/debug/kdepim-4.10.5/mailcommon/searchpatternedit.cpp:621
#9  0x0000003f7aaaf3e4 in MailCommon::KMFilterDialog::slotFilterSelected (this=0x747c670, aFilter=0x507bd50) at /usr/src/debug/kdepim-4.10.5/mailcommon/filter/kmfilterdialog.cpp:708
#10 0x00000030d038d31f in QMetaObject::activate (sender=0x74a0e00, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffcc5c7520) at kernel/qobject.cpp:3547
#11 0x0000003f7aaae65f in MailCommon::KMFilterListBox::filterSelected (this=this@entry=0x74a0e00, _t1=0x507bd50) at /usr/src/debug/kdepim-4.10.5/x86_64-redhat-linux-gnu/mailcommon/kmfilterdialog.moc:155
#12 0x0000003f7aaaffa0 in MailCommon::KMFilterListBox::slotSelected (this=0x74a0e00, aIdx=7) at /usr/src/debug/kdepim-4.10.5/mailcommon/filter/kmfilterdialog.cpp:1206
#13 0x00000030d038d31f in QMetaObject::activate (sender=0x74a11c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffcc5c76a0) at kernel/qobject.cpp:3547
#14 0x00000030d2136001 in QListWidget::currentRowChanged (this=this@entry=0x74a11c0, _t1=7) at .moc/release-shared/moc_qlistwidget.cpp:260
#15 0x00000030d2136111 in QListWidgetPrivate::_q_emitCurrentItemChanged (this=0x74a11f0, current=..., previous=...) at itemviews/qlistwidget.cpp:1121
#16 0x00000030d038d31f in QMetaObject::activate (sender=0x5fb1240, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffcc5c7860) at kernel/qobject.cpp:3547
#17 0x00000030d2124d4a in QItemSelectionModel::currentChanged (this=this@entry=0x5fb1240, _t1=..., _t2=...) at .moc/release-shared/moc_qitemselectionmodel.cpp:172
#18 0x00000030d2124e39 in QItemSelectionModel::setCurrentIndex (this=0x5fb1240, index=..., command=...) at itemviews/qitemselectionmodel.cpp:1175
#19 0x00000030d20d682a in QAbstractItemView::mousePressEvent (this=0x74a11c0, event=<optimized out>) at itemviews/qabstractitemview.cpp:1682
#20 0x00000030d1c1a1e0 in QWidget::event (this=0x74a11c0, event=0x7fffcc5c85a0) at kernel/qwidget.cpp:8372
#21 0x00000030d1fc5516 in QFrame::event (this=0x74a11c0, e=0x7fffcc5c85a0) at widgets/qframe.cpp:557
#22 0x00000030d20d111b in QAbstractItemView::viewportEvent (this=0x74a11c0, event=0x7fffcc5c85a0) at itemviews/qabstractitemview.cpp:1644
#23 0x00000030d0377eb6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x74a16c0, event=0x7fffcc5c85a0) at kernel/qcoreapplication.cpp:1059
#24 0x00000030d1bca65c in QApplicationPrivate::notify_helper (this=0x22022c0, receiver=0x74a16c0, e=0x7fffcc5c85a0) at kernel/qapplication.cpp:4558
#25 0x00000030d1bcf36b in QApplication::notify (this=<optimized out>, receiver=0x74a16c0, e=0x7fffcc5c85a0) at kernel/qapplication.cpp:4105
#26 0x0000003f6c6455c6 in KApplication::notify (this=0x7fffcc5c9460, receiver=0x74a16c0, event=0x7fffcc5c85a0) at /usr/src/debug/kdelibs-4.10.5/kdeui/kernel/kapplication.cpp:311
#27 0x00000030d0377d4e in QCoreApplication::notifyInternal (this=0x7fffcc5c9460, receiver=0x74a16c0, event=0x7fffcc5c85a0) at kernel/qcoreapplication.cpp:949
#28 0x00000030d1bcb4cb in QApplicationPrivate::sendMouseEvent (receiver=0x74a16c0, event=0x7fffcc5c85a0, alienWidget=0x74a16c0, nativeWidget=0x74a0e00, buttonDown=0x30d269f268 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:231
#29 0x00000030d1c45d54 in QETWidget::translateMouseEvent (this=this@entry=0x74a0e00, event=event@entry=0x7fffcc5c8d10) at kernel/qapplication_x11.cpp:4538
#30 0x00000030d1c44ae1 in QApplication::x11ProcessEvent (this=0x7fffcc5c9460, event=0x7fffcc5c8d10) at kernel/qapplication_x11.cpp:3661
#31 0x00000030d1c6ac4c in x11EventSourceDispatch (s=s@entry=0x2204920, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#32 0x0000003a26847a55 in g_main_dispatch (context=0x21f5e80) at gmain.c:2715
#33 g_main_context_dispatch (context=context@entry=0x21f5e80) at gmain.c:3219
#34 0x0000003a26847d88 in g_main_context_iterate (context=context@entry=0x21f5e80, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3290
#35 0x0000003a26847e44 in g_main_context_iteration (context=0x21f5e80, may_block=1) at gmain.c:3351
#36 0x00000030d03a6676 in QEventDispatcherGlib::processEvents (this=0x21fbc10, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#37 0x00000030d1c6a92e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#38 0x00000030d03769ff in QEventLoop::processEvents (this=this@entry=0x7fffcc5c90e0, flags=...) at kernel/qeventloop.cpp:149
#39 0x00000030d0376c88 in QEventLoop::exec (this=0x7fffcc5c90e0, flags=...) at kernel/qeventloop.cpp:204
#40 0x00000030d037bcb8 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#41 0x0000000000402ded in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdepim-4.10.5/kmail/main.cpp:146

Reported using DrKonqi