.
Thread 2 (Thread 19175):
#0  0x00007f0306834ff3 in select () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f03075edb7d in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#2  0x00007f030751c775 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#3  0x00007f030728c9ca in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#4  0x00007f030683c6dd in clone () from /lib/libc.so.6
No symbol table info available.
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 19174):
#0  0x00007f0307e0e048 in QAction::activate(QAction::ActionEvent) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#1  0x000000000053906c in ?? ()
No symbol table info available.
#2  0x00000000005391a0 in ?? ()
No symbol table info available.
#3  0x000000000053a368 in ?? ()
No symbol table info available.
#4  0x00007f0307623e3f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#5  0x00007f0307e0c032 in QAction::triggered(bool) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#6  0x00007f0307e0e0ab in QAction::activate(QAction::ActionEvent) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#7  0x00007f0307e0f9b7 in QAction::event(QEvent*) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#8  0x00007f0307e1222c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
No symbol table info available.
#9  0x00007f0307e186fb in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#10 0x00007f030761106c in QCoreApplication::notifyInternal(QObject*, QEvent*)
    () from /usr/lib/libQtCore.so.4
No symbol table info available.
#11 0x00007f0307e4de86 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#12 0x00007f0307e4fc97 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#13 0x00007f0307e1a268 in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#14 0x00007f030761106c in QCoreApplication::notifyInternal(QObject*, QEvent*)
    () from /usr/lib/libQtCore.so.4
No symbol table info available.
#15 0x00007f0307ebd16a in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#16 0x00007f0307ebf6f0 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#17 0x00007f0307e96904 in QApplication::x11ProcessEvent(_XEvent*) ()
   from /usr/lib/libQtGui.so.4
No symbol table info available.
#18 0x00007f0307ec2882 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#19 0x00007f03060698c2 in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#20 0x00007f030606d748 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#21 0x00007f030606d8fc in g_main_context_iteration ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#22 0x00007f030763a513 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#23 0x00007f0307ec246e in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#24 0x00007f030760f992 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#25 0x00007f030760fd6c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#26 0x00007f0307613aab in QCoreApplication::exec() ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#27 0x000000000057cc61 in ?? ()
No symbol table info available.
#28 0x00007f0306774c4d in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#29 0x0000000000422fe9 in ?? ()
No symbol table info available.
#30 0x00007fff88b3b0e8 in ?? ()
No symbol table info available.
#31 0x000000000000001c in ?? ()
No symbol table info available.
#32 0x0000000000000001 in ?? ()
No symbol table info available.
#33 0x00007fff88b3cbb7 in ?? ()
No symbol table info available.
#34 0x0000000000000000 in ?? ()
No symbol table info available.