From: Xin Long <lucien.xin@xxxxxxxxx>
Date: Wed, 26 Jun 2019 16:31:39 +0800
> Now when sctp_connect() is called with a wrong sa_family, it binds
> to a port but doesn't set bp->port, then sctp_get_af_specific will
> return NULL and sctp_connect() returns -EINVAL.
>
> Then if sctp_bind() is called to bind to another port, the last
> port it has bound will leak due to bp->port is NULL by then.
>
> sctp_connect() doesn't need to bind ports, as later __sctp_connect
> will do it if bp->port is NULL. So remove it from sctp_connect().
> While at it, remove the unnecessary sockaddr.sa_family len check
> as it's already done in sctp_inet_connect.
>
> Fixes: 644fbdeacf1d ("sctp: fix the issue that flags are ignored when using kernel_connect")
> Reported-by: syzbot+079bf326b38072f849d9@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
Applied and queued up for -stable, thanks.
