Signed-off-by: Eric Anholt <e...@anholt.net>
---
 drivers/gpu/drm/i915/i915_gem.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 14afc23..e87db6f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2761,6 +2761,13 @@ i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
                mutex_unlock(&dev->struct_mutex);
                return -EBADF;
        }
+       obj_priv = obj->driver_private;
+
+       if (obj_priv->pin_count == 0) {
+               drm_gem_object_unreference(obj);
+               mutex_unlock(&dev->struct_mutex);
+               return -EINVAL;
+       }
 
        obj_priv = obj->driver_private;
        if (obj_priv->pin_filp != file_priv) {
-- 
1.5.6.5


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