From: Xin Long <lucien.xin@xxxxxxxxx>
Date: Sun, 18 Nov 2018 21:59:49 +0800
> Different from processing the addstrm_out request, The receiver handles
> an addstrm_in request by sending back an addstrm_out request to the
> sender who will increase its stream's in and incnt later.
>
> Now stream->incnt has been increased since it sent out the addstrm_in
> request in sctp_send_add_streams(), with the wrong stream->incnt will
> even cause crash when copying stream info from the old stream's in to
> the new one's in sctp_process_strreset_addstrm_out().
>
> This patch is to fix it by simply removing the stream->incnt change
> from sctp_send_add_streams().
>
> Fixes: 242bd2d519d7 ("sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Request Parameter")
> Reported-by: Jianwen Ji <jiji@xxxxxxxxxx>
> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
Applied and queued up for -stable.
