• Xin Long's avatar
    sctp: not increase stream's incnt before sending addstrm_in request · e1e46479
    Xin Long authored
    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: 242bd2d5 ("sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Request Parameter")
    Reported-by: default avatarJianwen Ji <jiji@redhat.com>
    Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    e1e46479
stream.c 28.3 KB