Comment 2 for bug 1055166

StacktraceTop:
 memmove (__len=81888800, __src=<optimized out>, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:58
 drisw_update_tex_buffer (drawable=<optimized out>, ctx=<optimized out>, res=<optimized out>) at drisw.c:272
 dri_set_tex_buffer2 (pDRICtx=<optimized out>, target=3553, format=8410, dPriv=<optimized out>) at dri_drawable.c:234
 operator() (a0=29362646, this=0x7f0311c02ce0) at /usr/include/boost/function/function_template.hpp:760
 compiz::opengl::bindTexImageGLX(ServerGrabInterface*, unsigned long, unsigned long, boost::function<bool (unsigned long)> const&, boost::function<void (unsigned long)> const&, boost::function<void ()> const&, compiz::opengl::_PixmapSource) (serverGrabInterface=<optimized out>, x11Pixmap=29362645, glxPixmap=29362646, checkPixmapValidity=..., bindTexImageEXT=..., waitGLX=..., source=compiz::opengl::InternallyManaged) at /build/buildd/compiz-0.9.8.2+bzr3377/plugins/opengl/src/glxtfpbind/src/glx-tfp-bind.cpp:50