kmail crash

Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f0a8bd47880 (LWP 14535))]

Thread 3 (Thread 0x7f0a76f9b700 (LWP 14542)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166
#1  0x0000003f24d7e685 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x3f25752740) at ../../../Source/JavaScriptCore/wtf/FastMalloc.cpp:2495
#2  0x0000003f24d7e6e9 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../../../Source/JavaScriptCore/wtf/FastMalloc.cpp:1618
#3  0x0000003f00607d14 in start_thread (arg=0x7f0a76f9b700) at pthread_create.c:309
#4  0x0000003effef194d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7f0a7669a700 (LWP 14543)):
#0  0x0000003effee8e9f in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000003effa47974 in g_main_context_poll (n_fds=1, fds=0x7f0a700026d0, timeout=2487, context=0x7f0a700009a0, priority=<optimized out>) at gmain.c:3417
#2  g_main_context_iterate (context=context@entry=0x7f0a700009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gmain.c:3118
#3  0x0000003effa47a94 in g_main_context_iteration (context=0x7f0a700009a0, may_block=1) at gmain.c:3184
#4  0x0000003f0aba3a06 in QEventDispatcherGlib::processEvents (this=0x7f0a700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x0000003f0ab7495f in QEventLoop::processEvents (this=this@entry=0x7f0a76699d20, flags=...) at kernel/qeventloop.cpp:149
#6  0x0000003f0ab74be8 in QEventLoop::exec (this=0x7f0a76699d20, flags=...) at kernel/qeventloop.cpp:204
#7  0x0000003f0aa785a0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x0000003f0aa7b53b in QThreadPrivate::start (arg=0x28af920) at thread/qthread_unix.cpp:298
#9  0x0000003f00607d14 in start_thread (arg=0x7f0a7669a700) at pthread_create.c:309
#10 0x0000003effef194d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f0a8bd47880 (LWP 14535)):
[KCrash Handler]
#6  0x00007f0a77128c50 in parent (this=0x7fff7ffef750) at ../../../../src/corelib/kernel/qabstractitemmodel.h:393
#7  QAccessibleTree::indexFromLogical (this=this@entry=0x37bf140, row=row@entry=1, column=1) at itemviews.cpp:488
#8  0x00007f0a77129276 in navigate (iface=0x7fff7ffef7c8, index=3, this=0x37bf140, relation=<optimized out>) at itemviews.cpp:573
#9  QAccessibleTree::navigate (this=0x37bf140, relation=<optimized out>, index=<optimized out>, iface=0x7fff7ffef7c8) at itemviews.cpp:554
#10 0x00007f0a77c60208 in AtSpiAdaptor::interfaceFromPath (this=0x2756eb0, dbusPath=...) at atspiadaptor.cpp:874
#11 0x00007f0a77c63e6e in AtSpiAdaptor::handleMessage (this=0x2756eb0, message=..., connection=...) at atspiadaptor.cpp:1176
#12 0x0000003f0c824410 in QDBusConnectionPrivate::activateObject (this=0x274c840, node=..., msg=..., pathStartPos=27) at qdbusintegrator.cpp:1384
#13 0x0000003f0c8249fb in QDBusActivateObjectEvent::placeMetaCall (this=0x2d17b10) at qdbusintegrator.cpp:1537
#14 0x0000003f0ab8a1ee in QObject::event (this=0x2756eb0, e=<optimized out>) at kernel/qobject.cpp:1195
#15 0x0000003f0dfca47c in QApplicationPrivate::notify_helper (this=this@entry=0x23473d0, receiver=receiver@entry=0x2756eb0, e=e@entry=0x2d17b10) at kernel/qapplication.cpp:4554
#16 0x0000003f0dfce9aa in QApplication::notify (this=0x7fff7fff0700, receiver=0x2756eb0, e=0x2d17b10) at kernel/qapplication.cpp:4415
#17 0x0000003f0f6459f6 in KApplication::notify (this=0x7fff7fff0700, receiver=0x2756eb0, event=0x2d17b10) at /usr/src/debug/kdelibs-4.8.2/kdeui/kernel/kapplication.cpp:311
#18 0x0000003f0ab7595e in QCoreApplication::notifyInternal (this=0x7fff7fff0700, receiver=receiver@entry=0x2756eb0, event=event@entry=0x2d17b10) at kernel/qcoreapplication.cpp:876
#19 0x0000003f0ab79401 in sendEvent (event=0x2d17b10, receiver=0x2756eb0) at kernel/qcoreapplication.h:231
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x22df210) at kernel/qcoreapplication.cpp:1500
#21 0x0000003f0aba3853 in sendPostedEvents () at kernel/qcoreapplication.h:236
#22 postEventSourceDispatch (s=s@entry=0x2344c00) at kernel/qeventdispatcher_glib.cpp:279
#23 0x0000003effa475bc in g_main_dispatch (context=0x2344a30) at gmain.c:2515
#24 g_main_context_dispatch (context=context@entry=0x2344a30) at gmain.c:3052
#25 0x0000003effa479d8 in g_main_context_iterate (context=context@entry=0x2344a30, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gmain.c:3123
#26 0x0000003effa47a94 in g_main_context_iteration (context=0x2344a30, may_block=1) at gmain.c:3184
#27 0x0000003f0aba39e6 in QEventDispatcherGlib::processEvents (this=0x22e0af0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#28 0x0000003f0e06a41e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#29 0x0000003f0ab7495f in QEventLoop::processEvents (this=this@entry=0x7fff7fff03a0, flags=...) at kernel/qeventloop.cpp:149
#30 0x0000003f0ab74be8 in QEventLoop::exec (this=0x7fff7fff03a0, flags=...) at kernel/qeventloop.cpp:204
#31 0x0000003f0ab79718 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#32 0x0000000000402d19 in ?? ()
#33 0x0000003effe21735 in __libc_start_main (main=0x402350, argc=1, ubp_av=0x7fff7fff08f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7fff08e8) at libc-start.c:226
#34 0x00000000004031a5 in _start ()