Bug#612030: mumble: segfault on audio statistics

[Timo Juhani Lindfors]

here's even more info that I got after installing libgl1-mesa-glx-dbg too:

(gdb) bt
#0  0xb61b5666 in glFinish () at ../../../src/mesa/x86/glapi_x86.S:370
#1  0xb70a4955 in QGLWidget::event(QEvent*) () from /usr/lib/libQtOpenGL.so.4
#2  0xb67335cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#3  0xb673a1f9 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#4  0xb63964cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#5  0xb679027b in QWidgetPrivate::hideChildren(bool) () from /usr/lib/libQtGui.so.4
#6  0xb67903bc in QWidgetPrivate::hide_helper() () from /usr/lib/libQtGui.so.4
#7  0xb6799ae0 in QWidget::setVisible(bool) () from /usr/lib/libQtGui.so.4
#8  0x080da44e in AudioStats (this=0xa336f58, p=0x9fda0c0) at AudioStats.cpp:326
#9  0x080f1654 in MainWindow::on_qaAudioStats_triggered (this=0x9fda0c0) at MainWindow.cpp:1690
#10 0x081fcccd in MainWindow::qt_metacall (this=0x9fda0c0, _c=QMetaObject::InvokeMetaMethod, _id=-8, _a=0xbff95d98) at release/moc_MainWindow.cpp:271
#11 0xb639b7aa in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#12 0xb63aa1bb in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#13 0xb672ccc9 in QAction::triggered(bool) () from /usr/lib/libQtGui.so.4
#14 0xb672eebc in QAction::activate(QAction::ActionEvent) () from /usr/lib/libQtGui.so.4
#15 0xb6bd00ff in ?? () from /usr/lib/libQtGui.so.4
#16 0xb6bd65ab in ?? () from /usr/lib/libQtGui.so.4
#17 0xb6bd75f7 in QMenu::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#18 0xb67917c8 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#19 0xb6bd8bfc in QMenu::event(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0xb67335cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0xb673aaf7 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0xb63964cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#23 0xb6739a52 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#24 0xb67c5268 in ?? () from /usr/lib/libQtGui.so.4
#25 0xb67c4253 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#26 0xb67f2372 in ?? () from /usr/lib/libQtGui.so.4
#27 0xb5e24305 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#28 0xb5e27fe8 in ?? () from /lib/libglib-2.0.so.0
#29 0xb5e281c8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#30 0xb63c2075 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0xb67f1ed5 in ?? () from /usr/lib/libQtGui.so.4
#32 0xb6394ae9 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#33 0xb6394f3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0xb639a16f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#35 0xb6733667 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#36 0x080eacc4 in main (argc=-1074171608, argv=0xbff97274) at main.cpp:414
(gdb) info register
eax            0xfffffff8	-8
ecx            0xa3a75d0	171603408
edx            0xa3a7438	171603000
ebx            0xb7146a40	-1223398848
esp            0xbff956ac	0xbff956ac
ebp            0xbff95738	0xbff95738
esi            0xa370a48	171379272
edi            0xbff95ad0	-1074177328
eip            0xb61b5666	0xb61b5666 <glFinish+6>
eflags         0x210282	[ SF IF RF ID ]
cs             0x73	115
ss             0x7b	123
ds             0x7b	123
es             0x7b	123
fs             0x0	0
gs             0x33	51
(gdb) x/5i $eip
0xb61b5666 <glFinish+6>:	jmp    *0x360(%eax)
0xb61b566c <glFinish+12>:	lea    0x0(%esi,%eiz,1),%esi
0xb61b5670 <glFlush>:	call   0xb61a3cb0 <_x86_get_dispatch>
0xb61b5675 <glFlush+5>:	nop
0xb61b5676 <glFlush+6>:	jmp    *0x364(%eax)
(gdb)