drm/i915: Reject bind_to_gtt() early if object > aperture

If the object is bigger than the entire aperture, reject it early
before evicting everything in a vain attempt to find space.

v2: Use E2BIG as suggested by Owain G. Ainsworth.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index b87945db1021..f84c8e982dcb 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2648,6 +2648,14 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
                 return -EINVAL;
         }
 
+        /* If the object is bigger than the entire aperture, reject it early
+         * before evicting everything in a vain attempt to find space.
+         */
+        if (obj->size > dev->gtt_total) {
+                DRM_ERROR("Attempting to bind an object larger than the aperture\n");
+                return -E2BIG;
+        }
+
  search_free:
         free_space = drm_mm_search_free(&dev_priv->mm.gtt_space,
                                         obj->size, alignment, 0);