AV stack

(gdb) bt
#0  0x000000000045f477 in MainServer::customEvent (this=0x8b2830, e=0x7fff3c0012a0) at mainserver.cpp:900
#1  0x00007ffff3fd4e5d in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007ffff3fbc8bd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007ffff3fbfe1f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007ffff3fea073 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007fffec62d3a6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fffec62d6f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fffec62d79c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff3fe9a55 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007ffff3fbb5ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007ffff3fbb8e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007ffff3fc0e5b in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#12 0x0000000000522cae in run_backend (cmdline=...) at main_helpers.cpp:696
#13 0x00000000004584f6 in main (argc=3, argv=0x7fffffffdf88) at main.cpp:135