From: Xin Long <lucien....@gmail.com>
Date: Sun, 13 Nov 2016 21:44:37 +0800
> Now when users shutdown a sock with SEND_SHUTDOWN in sctp, even if
> this sock has no connection (assoc), sk state would be changed to
> SCTP_SS_CLOSING, which is not as we expect.
>
> Besides, after that if users try to listen on this sock, kernel
> could even panic when it dereference sctp_sk(sk)->bind_hash in
> sctp_inet_listen, as bind_hash is null when sock has no assoc.
>
> This patch is to move sk state change after checking sk assocs
> is not empty, and also merge these two if() conditions and reduce
> indent level.
>
> Fixes: d46e416c11c8 ("sctp: sctp should change socket state when shutdown is
> received")
> Reported-by: Andrey Konovalov <andreyk...@google.com>
> Tested-by: Andrey Konovalov <andreyk...@google.com>
> Signed-off-by: Xin Long <lucien....@gmail.com>
Applied and queued up for -stable, thanks.
