From: Eric Dumazet <eric.duma...@gmail.com>
Date: Wed, 30 Aug 2017 09:29:31 -0700
> From: Eric Dumazet <eduma...@google.com>
>
> syzkaller had no problem to trigger a deadlock, attaching a KCM socket
> to another one (or itself). (original syzkaller report was a very
> confusing lockdep splat during a sendmsg())
>
> It seems KCM claims to only support TCP, but no enforcement is done,
> so we might need to add additional checks.
>
> Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-by: Dmitry Vyukov <dvyu...@google.com>
Applied and queued up for -stable, thanks.
