Application: kgpg (2.9.1)
KDE Platform Version: 4.10.5
Qt Version: 4.8.4
Operating System: Linux 3.8.0-26-generic x86_64
Distribution: Linux Mint 15 Olivia

-- Information about the crash:
Steps to systematically reproducte the crash on my system:
- Launch Kgpg
- Click "Keys/Generate Key Pair"
- Enter Name and Email
- Click OK
- Once the "Enter passphrase for user..." window pops up, click the "Notifications and Jobs" button in the task bar
- In the "Notifications and Jobs" mini-window, there is a line under the Kgpg category showing "State: Requesting Passphrase", a progress bar showing zero progress, a Pause button and a Stop button
- Click the Stop button
- A "gpg process did not finish" window pops up
- Click OK once to close the "Enter passphrase for user..." window
- Click OK again to get the KDE Crash window.

Also, when I launch Kgpg, the terminal the following warnings are issued:
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.                                                                                                                            
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.

The crash can be reproduced every time.

-- Backtrace:
Application: KGpg (kgpg), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f86ee61f7c0 (LWP 3442))]

Thread 2 (Thread 0x7f86db104700 (LWP 3450)):
#0  0x00007f86e7c0f359 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f86e7c0f5e9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f86e7bd030e in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f86ebaae036 in QEventDispatcherGlib::processEvents (this=0x7f86cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f86eba7e38f in QEventLoop::processEvents (this=this@entry=0x7f86db103d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f86eba7e618 in QEventLoop::exec (this=this@entry=0x7f86db103d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f86eb980410 in QThread::exec (this=this@entry=0x2853650) at thread/qthread.cpp:542
#7  0x00007f86eba5fedf in QInotifyFileSystemWatcherEngine::run (this=0x2853650) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f86eb982bec in QThreadPrivate::start (arg=0x2853650) at thread/qthread_unix.cpp:338
#9  0x00007f86e80a2f8e in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007f86eb335e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f86ee61f7c0 (LWP 3442)):
[KCrash Handler]
#5  0x00007f86ec17d814 in KJob::isAutoDelete() const () from /usr/lib/libkdecore.so.5
#6  0x00007f86ec17dab8 in KJob::emitResult() () from /usr/lib/libkdecore.so.5
#7  0x00007f86ec17db6d in KJob::kill(KJob::KillVerbosity) () from /usr/lib/libkdecore.so.5
#8  0x00007f86eba940ef in QMetaObject::activate (sender=0x296ca60, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#9  0x00007f86ed52b305 in ?? () from /usr/lib/libkdeui.so.5
#10 0x00007f86ed52bb6b in ?? () from /usr/lib/libkdeui.so.5
#11 0x00007f86ebe02063 in QDBusConnectionPrivate::deliverCall (this=0x249d050, object=0x296ca60, msg=..., metaTypes=..., slotIdx=5) at qdbusintegrator.cpp:951
#12 0x00007f86eba995be in QObject::event (this=0x296ca60, e=<optimized out>) at kernel/qobject.cpp:1194
#13 0x00007f86ec6e48ec in QApplicationPrivate::notify_helper (this=this@entry=0x24b7ce0, receiver=receiver@entry=0x296ca60, e=e@entry=0x2aab600) at kernel/qapplication.cpp:4567
#14 0x00007f86ec6e725b in QApplication::notify (this=0x24a5920, receiver=0x296ca60, e=0x2aab600) at kernel/qapplication.cpp:4428
#15 0x00007f86ed3f01a6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#16 0x00007f86eba7f63e in QCoreApplication::notifyInternal (this=0x24a5920, receiver=receiver@entry=0x296ca60, event=event@entry=0x2aab600) at kernel/qcoreapplication.cpp:946
#17 0x00007f86eba83171 in sendEvent (event=0x2aab600, receiver=0x296ca60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#18 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x247e630) at kernel/qcoreapplication.cpp:1570
#19 0x00007f86eba834a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#20 0x00007f86ebaade83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#21 postEventSourceDispatch (s=0x24c0ac0) at kernel/qeventdispatcher_glib.cpp:279
#22 0x00007f86e7bcff05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f86e7bd0248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f86e7bd0304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f86ebaae016 in QEventDispatcherGlib::processEvents (this=0x247fb40, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#26 0x00007f86ec78a1ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f86eba7e38f in QEventLoop::processEvents (this=this@entry=0x7fff3d93ff90, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f86eba7e618 in QEventLoop::exec (this=this@entry=0x7fff3d93ff90, flags=...) at kernel/qeventloop.cpp:204
#29 0x00007f86eba83cf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#30 0x0000000000421810 in ?? ()
#31 0x00007f86eb25dea5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#32 0x0000000000421869 in _start ()

Possible duplicates by query: bug 294399.

Reported using DrKonqi