diff --git a/fs/attr.c b/fs/attr.c
index b5b8835..1552a5f 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -183,6 +183,8 @@ EXPORT_SYMBOL(setattr_prepare);
  */
 int inode_newsize_ok(const struct inode *inode, loff_t offset)
 {
+	if (offset < 0)
+		return -EINVAL;
 	if (inode->i_size < offset) {
 		unsigned long limit;