Application: kmail (1.13.7)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38.5-24.fc15.x86_64 x86_64
Distribution: "Fedora release 15 (Lovelock)"

-- Information about the crash:
Reading email from Fedora-Users group. I highlighted a message, read it in the preview, and hit control-delete to delete the thread.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  d_func (this=0x0) at /usr/src/debug/kdelibs-4.6.2/kdecore/services/kmimetype.h:48
#7  KMimeType::iconName (this=0x0, url=...) at /usr/src/debug/kdelibs-4.6.2/kdecore/services/kmimetype.cpp:581
#8  0x000000358771873e in KMail::ObjectTreeParser::processApplicationMsTnefSubtype (this=0x7fffd3d798b0, node=<optimized out>, result=<optimized out>) at /usr/src/debug/kdepim-4.4.11.1/kmail/objecttreeparser.cpp:2061
#9  0x000000358771b39d in KMail::ObjectTreeParser::parseObjectTree (this=0x7fffd3d798b0, node=0xd3c9ed0) at /usr/src/debug/kdepim-4.4.11.1/kmail/objecttreeparser.cpp:318
#10 0x000000358771b723 in KMail::ObjectTreeParser::stdChildHandling (this=0x7fffd3d79b60, child=0xa6ed4f0) at /usr/src/debug/kdepim-4.4.11.1/kmail/objecttreeparser.cpp:1278
#11 0x000000358771ba84 in KMail::ObjectTreeParser::processMultiPartMixedSubtype (this=<optimized out>, node=<optimized out>) at /usr/src/debug/kdepim-4.4.11.1/kmail/objecttreeparser.cpp:1291
#12 0x000000358771b39d in KMail::ObjectTreeParser::parseObjectTree (this=0x7fffd3d79b60, node=0x9801990) at /usr/src/debug/kdepim-4.4.11.1/kmail/objecttreeparser.cpp:318
#13 0x00000035875c0609 in KMReaderWin::parseMsg (this=0xc3440c0, aMsg=0xda363b0) at /usr/src/debug/kdepim-4.4.11.1/kmail/kmreaderwin.cpp:1612
#14 0x00000035875b9e16 in KMReaderWin::displayMessage (this=0xc3440c0) at /usr/src/debug/kdepim-4.4.11.1/kmail/kmreaderwin.cpp:1536
#15 0x00000035875b9fd9 in KMReaderWin::updateReaderWin (this=0xc3440c0) at /usr/src/debug/kdepim-4.4.11.1/kmail/kmreaderwin.cpp:1479
#16 0x00000035875c1ee0 in KMReaderWin::qt_metacall (this=0xc3440c0, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0x7fffd3d7a1f0) at /usr/src/debug/kdepim-4.4.11.1/x86_64-redhat-linux-gnu/kmail/kmreaderwin.moc:179
#17 0x000000356ab6ceca in QMetaObject::activate (sender=0xc344168, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#18 0x000000356ab707b9 in QObject::event (this=0xc344168, e=<optimized out>) at kernel/qobject.cpp:1181
#19 0x000000356d3b73d4 in notify_helper (e=0x7fffd3d7a8f0, receiver=0xc344168, this=0x22f4550) at kernel/qapplication.cpp:4462
#20 QApplicationPrivate::notify_helper (this=0x22f4550, receiver=0xc344168, e=0x7fffd3d7a8f0) at kernel/qapplication.cpp:4434
#21 0x000000356d3bc261 in QApplication::notify (this=0x7fffd3d7ad40, receiver=0xc344168, e=0x7fffd3d7a8f0) at kernel/qapplication.cpp:4341
#22 0x000000356fa40e76 in KApplication::notify (this=0x7fffd3d7ad40, receiver=0xc344168, event=0x7fffd3d7a8f0) at /usr/src/debug/kdelibs-4.6.2/kdeui/kernel/kapplication.cpp:311
#23 0x000000356ab5a1bc in QCoreApplication::notifyInternal (this=0x7fffd3d7ad40, receiver=0xc344168, event=0x7fffd3d7a8f0) at kernel/qcoreapplication.cpp:731
#24 0x000000356ab86b62 in sendEvent (event=0x7fffd3d7a8f0, receiver=<optimized out>) at kernel/qcoreapplication.h:215
#25 QTimerInfoList::activateTimers (this=0x22f6cd0) at kernel/qeventdispatcher_unix.cpp:604
#26 0x000000356ab84394 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#27 0x000000319aa42b6d in g_main_dispatch (context=0x22f6260) at gmain.c:2440
#28 g_main_context_dispatch (context=0x22f6260) at gmain.c:3013
#29 0x000000319aa43348 in g_main_context_iterate (context=0x22f6260, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3091
#30 0x000000319aa435dc in g_main_context_iteration (context=0x22f6260, may_block=1) at gmain.c:3154
#31 0x000000356ab84d1f in QEventDispatcherGlib::processEvents (this=0x2289f10, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#32 0x000000356d459f2e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#33 0x000000356ab596d2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#34 0x000000356ab598cf in QEventLoop::exec (this=0x7fffd3d7ab80, flags=...) at kernel/qeventloop.cpp:201
#35 0x000000356ab5da17 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#36 0x0000000000402ed0 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdepim-4.4.11.1/kmail/main.cpp:158

Reported using DrKonqi