Bug#803528: kdenlive stack trace with debugging symbols
Here's a stack trace with debugging symbols of
when kdenlive froze.
It seems to me to be the same bug that freezes
glxgears.
(gdb) bt
#0 0xb7fddbe0 in __kernel_vsyscall ()
#1 0xb4eb6e2b in poll () at ../sysdeps/unix/syscall-template.S:81
#2 0xb4abe86d in poll (__timeout=-1, __nfds=1, __fds=0xbfffe8dc) at /usr/include/i386-linux-gnu/bits/poll2.h:46
#3 _xcb_conn_wait (c=0x86bf2d0, cond=0xbfffe9bc, vector=0x0, count=0x0) at ../../src/xcb_conn.c:459
#4 0xb4ac066b in wait_for_reply (c=c@entry=0x86bf2d0, request=<optimized out>, e=0xbfffea68) at ../../src/xcb_in.c:516
#5 0xb4ac07c9 in xcb_wait_for_reply (c=0x86bf2d0, request=980, e=0xbfffea68) at ../../src/xcb_in.c:546
#6 0xb4b49816 in _XReply (dpy=0x86be6c8, rep=0xbfffeacc, extra=-1, discard=0) at ../../src/xcb_io.c:602
#7 0xb7c9445e in DRI2GetBuffersWithFormat (dpy=0x86be6c8, drawable=41943070, width=0x9ae15e0, height=0x9ae15e4, attachments=0xbfffec04,
count=1, outCount=0xbfffebd8) at ../../../../src/glx/dri2.c:491
#8 0xb7c947a9 in dri2GetBuffersWithFormat (driDrawable=0x9ae15c8, width=0x9ae15e0, height=0x9ae15e4, attachments=0xbfffec04, count=1,
out_count=0xbfffebd8, loaderPrivate=0x9bca0f0) at ../../../../src/glx/dri2_glx.c:900
#9 0xa58fc0fd in dri2_drawable_get_buffers (count=<synthetic pointer>, atts=0x9bca694, drawable=0x9bca1a0)
at ../../../../../../src/gallium/state_trackers/dri/dri2.c:213
#10 dri2_allocate_textures (ctx=0x97d58f0, drawable=0x9bca1a0, statts=0x9bca694, statts_count=2)
at ../../../../../../src/gallium/state_trackers/dri/dri2.c:407
#11 0xa58f8b7b in dri_st_framebuffer_validate (stctx=0x9841820, stfbi=0x9bca1a0, statts=0x9bca694, count=2, out=0xbfffed00)
at ../../../../../../src/gallium/state_trackers/dri/dri_drawable.c:83
#12 0xa582b657 in st_framebuffer_validate (stfb=0x9bca300, st=st@entry=0x9841820) at ../../../../src/mesa/state_tracker/st_manager.c:200
#13 0xa582cc40 in st_manager_validate_framebuffers (st=0x9841820) at ../../../../src/mesa/state_tracker/st_manager.c:868
#14 0xa57d217a in st_validate_state (st=0x9841820) at ../../../../src/mesa/state_tracker/st_atom.c:189
#15 0xa57d9514 in st_Clear (ctx=0x97febb0, mask=2) at ../../../../src/mesa/state_tracker/st_cb_clear.c:469
#16 0xa568ffed in _mesa_Clear (mask=16384) at ../../../../src/mesa/main/clear.c:224
#17 0x0835f829 in QOpenGLFunctions::glClear (mask=16384, this=0x88fcd9c) at /usr/include/i386-linux-gnu/qt5/QtGui/qopenglfunctions.h:595
#18 GLWidget::paintGL (this=0x88fcd88) at /build/kdenlive-EBb_31/kdenlive-15.08.2+git20151026/src/monitor/glwidget.cpp:369
#19 0x0848a469 in GLWidget::qt_static_metacall (_o=0x88fcd88, _c=QMetaObject::InvokeMetaMethod, _id=31, _a=0xbffff0d8)
at /build/kdenlive-EBb_31/kdenlive-15.08.2+git20151026/obj-i586-linux-gnu/src/moc_glwidget.cpp:241
#20 0xb53eb1d1 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#21 0xb53eb6cd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#22 0xb768da32 in QQuickWindow::beforeRendering() () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#23 0xb7690c95 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#24 0xb765dd42 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#25 0xb765f3a8 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#26 0xb63de37a in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#27 0xb63e3a50 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#28 0xb53bb26f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#29 0xb541253b in QTimerInfoList::activateTimers() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#30 0xb5412b09 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#31 0xb4762e59 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#32 0xb47630f9 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#33 0xb47631c4 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#34 0xb5413813 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#35 0xb1fadb51 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#36 0xb53b8393 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#37 0xb53b87ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#38 0xb53c0de5 in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#39 0xb56e0701 in QGuiApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#40 0xb63da234 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#41 0x081356ab in main (argc=1, argv=0xbffff954) at /build/kdenlive-EBb_31/kdenlive-15.08.2+git20151026/src/main.cpp:118
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