[Intel-gfx] [PATCH 1/3] drm/i915: Rely on accurate request tracking for finding hung batches

[Chris Wilson]

On Mon, Feb 10, 2014 at 04:30:49PM +0200, Mika Kuoppala wrote:
> From: Chris Wilson <chris at chris-wilson.co.uk>
> 
> +	request = i915_gem_find_active_request(ring);
> +	if (request) {
> +		/* We need to copy these to an anonymous buffer as the simplest
> +		 * method to avoid being overwritten by userspace.
> +		 */
> +		return i915_error_object_create(dev_priv, request->batch_obj, request->ctx->vm);

This needs to protect against ctx == NULL, e.g.
  request->ctx ? request->ctx->vm : &dev_priv->gtt.base)
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre