diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c
index 4542d5f4ded8..e907c1d07887 100644
--- a/drivers/gpu/drm/nouveau/nouveau_abi16.c
+++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c
@@ -666,6 +666,10 @@ nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 	if (unlikely(device->info.family >= NV_DEVICE_INFO_V0_FERMI))
 		return nouveau_abi16_put(abi16, -EINVAL);
 
+	/* zero size yields a zero-length node, underflowing args.limit */
+	if (unlikely(!info->size))
+		return nouveau_abi16_put(abi16, -EINVAL);
+
 	chan = nouveau_abi16_chan(abi16, info->channel);
 	if (!chan)
 		return nouveau_abi16_put(abi16, -ENOENT);