On Wed, Apr 23, 2014 at 08:32:20PM +0200, Daniel Vetter wrote:
> We need to make sure that userspace keeps on following the contract,
> otherwise we won't be able to use the reserved fields at all.
>
> Testcase: igt/gem_exec_params/*-dirt
> Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
> ---
> drivers/gpu/drm/i915/i915_gem_execbuffer.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> index c2e5d39a1df8..0f0aebdd8dbd 100644
> --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
> @@ -1115,6 +1115,9 @@ i915_gem_do_execbuffer(struct drm_device *dev, void
> *data,
> ret = -EFAULT;
> goto pre_mutex_err;
> }
> + } else {
> + if (args->DR1 || args->DR4 || args->cliprects_ptr)
> + return -EINVAL;
We're inside a mutex here.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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