1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_channel.c b/drivers/gpu/drm/nouveau/nouveau_channel.c
index e37977d02463..4d2f19420922 100644
--- a/drivers/gpu/drm/nouveau/nouveau_channel.c
+++ b/drivers/gpu/drm/nouveau/nouveau_channel.c
@@ -253,6 +253,9 @@ nouveau_channel_get(struct drm_device *dev, struct drm_file *file_priv, int id)
         struct nouveau_channel *chan;
         unsigned long flags;
 
+        if (unlikely(id < 0 || id >= NOUVEAU_MAX_CHANNEL_NR))
+                return ERR_PTR(-EINVAL);
+
         spin_lock_irqsave(&dev_priv->channels.lock, flags);
         chan = nouveau_channel_get_unlocked(dev_priv->channels.ptr[id]);
         spin_unlock_irqrestore(&dev_priv->channels.lock, flags);