From: Soheil Hassas Yeganeh <soheil.k...@gmail.com>
Date: Mon, 11 Jul 2016 16:51:26 -0400
> From: Soheil Hassas Yeganeh <soh...@google.com>
>
> Sergei Trofimovich reported that pulse audio sends SCM_CREDENTIALS
> as a control message to TCP. Since __sock_cmsg_send does not
> support SCM_RIGHTS and SCM_CREDENTIALS, it returns an error and
> hence breaks pulse audio over TCP.
>
> SCM_RIGHTS and SCM_CREDENTIALS are sent on the SOL_SOCKET layer
> but they semantically belong to SOL_UNIX. Since all
> cmsg-processing functions including sock_cmsg_send ignore control
> messages of other layers, it is best to ignore SCM_RIGHTS
> and SCM_CREDENTIALS for consistency (and also for fixing pulse
> audio over TCP).
>
> Fixes: c14ac9451c34 ("sock: enable timestamping using control messages")
> Signed-off-by: Soheil Hassas Yeganeh <soh...@google.com>
> Reported-by: Sergei Trofimovich <sly...@gentoo.org>
> Tested-by: Sergei Trofimovich <sly...@gentoo.org>
Applied and queued up for -stable, thanks.
