On Thu, 1 Apr 2021 08:31:05 -0600
David Ahern [off-list ref] wrote:

On 3/31/21 9:49 PM, Stephen Hemminger wrote:

quoted

@@ -5681,14 +5682,29 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
 
 	ASSERT_RTNL();
 
-	if (!token)
+	if (!token) {  

You forgot to add a message here.

This branch is unreachable, function is  only called from place where it is not NULL.