Subject: Re: [PATCH net] rtnetlink: Refine sanity checks in rtnl_fdb_{add|del}

From: Ido Schimmel <[email-masked]>
Date: Fri, 30 Nov 2018 18:02:08 +0200

On Fri, Nov 30, 2018 at 08:59:09AM -0700, David Ahern wrote:
> This does not repro for me:
> # ./a.out
> Invalid address length 6 - must be 4 bytes
> RTNETLINK answers: No buffer space available
> RTNETLINK answers: Operation not supported
> Invalid address length 6 - must be 4 bytes
> Invalid address length 6 - must be 4 bytes
> Invalid address length 6 - must be 4 bytes
> Invalid address length 6 - must be 16 bytes
> Invalid address length 6 - must be 16 bytes
> Invalid address length 6 - must be 16 bytes
> 
> config available>?

You need a kernel with kmsan. See:
https://github.com/google/kmsan