[Bug 103706] [CI][BAT] igt* incomplete - /dev/kmsg buffer overrun, some messages lost

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103706

--- Comment #14 from Chris Wilson <chris at chris-wilson.co.uk> ---
All the vgem_basic oops are
commit 0c51ef8684e30333ee2a7cef359258d91727166b
Author: Noralf Trønnes <noralf at tronnes.org>
Date:   Tue Nov 14 00:12:01 2017 +0100

    drm/debugfs: Fix framebuffer debugfs file init

    The introduction of: drm/framebuffer: Add framebuffer debugfs file
    broke vgem. That patch assumed that all drivers had initialized the
    dev->mode_config.fb_lock mutex which happens in drm_mode_config_init().
    vgem doesn't need to call drm_mode_config_init().

    Fix this by only creating the framebuffer debugfs file for modesetting
    drivers.

    Fixes: 45d58b40292b ("drm/framebuffer: Add framebuffer debugfs file")
    Suggested-by: Chris Wilson <chris at chris-wilson.co.uk>
    Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
    Reviewed-by: Dave Airlie <airlied at redhat.com>
    Signed-off-by: Jani Nikula <jani.nikula at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20171113231201.26177-1-noralf@tronnes.org

The simple identifier for this is the  RIP: drm_framebuffer_info

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