[Freedreno] [PATCH 0/3] allow DRM drivers to limit creation of blobs

[Daniel Vetter]

On Thu, Nov 07, 2019 at 02:39:11PM -0500, Steve Cohen wrote:
> Fuzzers used in Android compliance testing repeatedly call the
> create blob IOCTL which eventually exhausts the system memory.
> This series adds a hook which allows drivers to impose their own
> limitations on the size and/or number of blobs created.

Pretty sure this isn't just a problem for msm/dpu alone, why this very
limited approach?

Also, why are your fuzzers not also allocating enormous amounts of gem
buffers, which will also exhaust memory eventually?
-Daniel

> 
> Steve Cohen (3):
>   drm: add driver hook for create blob limitations
>   drm/msm: add support for createblob_check driver hook
>   drm/msm/dpu: check blob limitations during create blob ioctl
> 
>  drivers/gpu/drm/drm_property.c          |  7 +++++++
>  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 14 ++++++++++++++
>  drivers/gpu/drm/msm/msm_drv.c           | 25 +++++++++++++++++++++++++
>  drivers/gpu/drm/msm/msm_kms.h           |  1 +
>  include/drm/drm_drv.h                   |  9 +++++++++
>  5 files changed, 56 insertions(+)
> 
> -- 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch