}
}
+ /*
+ * XXX: There is a prevalence of the assumption that we fit the
+ * object's page count inside a 32bit _signed_ variable. Let's document
+ * this and catch if we ever need to fix it. In the meantime, if you do
+ * spot such a local variable, please consider fixing!
+ */
+
+ if (dma_buf->size >> PAGE_SHIFT > INT_MAX)
+ return ERR_PTR(-E2BIG);
+
/* need to attach */
attach = dma_buf_attach(dma_buf, dev->dev);
if (IS_ERR(attach))