[Bug 98321] Segmentation fault in xcb_send_request64 () from /usr/lib/x86_64-linux-gnu/libxcb.so.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98321

            Bug ID: 98321
           Summary: Segmentation fault in xcb_send_request64 () from
                    /usr/lib/x86_64-linux-gnu/libxcb.so.1
           Product: Mesa
           Version: 11.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: olouvignes at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Creating and destroying the video window multiple times causes a Segmentation
Fault error.

Test case with MPV:

$ mpv
/srv/player/data/media/58060421-9578-46c9-b500-4485ac110005/media/axa-logo.png
--idle --keep-open

Then pressing the `_` key multiple times in the CLI on terminal

See this mpv bug for context:

https://github.com/mpv-player/mpv/issues/3678

```
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:    16.04
Codename:   xenial
```

```
# glxinfo | grep -i mesa
    GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
client glx vendor string: Mesa Project and SGI
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
    GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
Extended renderer info (GLX_MESA_query_renderer):
    Device: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)  (0x1916)
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.2.0
    GL_MESA_pack_invert, GL_MESA_texture_signed_rgba, 
OpenGL version string: 3.0 Mesa 11.2.0
    GL_MESA_pack_invert, GL_MESA_texture_signed_rgba, GL_MESA_window_pos, 
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 11.2.0
```

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