From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA0B2C433ED for ; Mon, 17 May 2021 14:15:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBB1061876 for ; Mon, 17 May 2021 14:15:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235509AbhEQOQ3 (ORCPT ); Mon, 17 May 2021 10:16:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:49310 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238796AbhEQONz (ORCPT ); Mon, 17 May 2021 10:13:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A064E61209; Mon, 17 May 2021 14:08:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621260525; bh=ifT+CSqm0fO8B5qnhpSSP42pAVgMs/CqtAJhoLC+8pE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cDGUTuFwfI1S7gsy+QC6RW32gka8cGU6AuKY8KofoindcIcC1ynWIt70Tkm6UfAfD ycWfU75AU8lfOTSs3i/8gQBfpkXVGTxdm1xHZW+opjsNDp0kBKcUOy8C1lO1D3lvlS puRRLhrbAX8V6UA3oypM6Zvi1sad7T/1E33Gjs88= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Dingchen (David) Zhang" , Bhawanpreet Lakha , Aurabindo Pillai , Daniel Wheeler , Alex Deucher , Sasha Levin Subject: [PATCH 5.12 103/363] drm/amd/display: add handling for hdcp2 rx id list validation Date: Mon, 17 May 2021 15:59:29 +0200 Message-Id: <20210517140306.084431198@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140302.508966430@linuxfoundation.org> References: <20210517140302.508966430@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dingchen (David) Zhang [ Upstream commit 4ccf9446b2a3615615045346c97f8a1e2a16568a ] [why] the current implementation of hdcp2 rx id list validation does not have handler/checker for invalid message status, e.g. HMAC, the V parameter calculated from PSP not matching the V prime from Rx. [how] return a generic FAILURE for any message status not SUCCESS or REVOKED. Signed-off-by: Dingchen (David) Zhang Reviewed-by: Bhawanpreet Lakha Acked-by: Aurabindo Pillai Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c index 904ce9b88088..afbe8856468a 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c @@ -791,6 +791,8 @@ enum mod_hdcp_status mod_hdcp_hdcp2_validate_rx_id_list(struct mod_hdcp *hdcp) TA_HDCP2_MSG_AUTHENTICATION_STATUS__RECEIVERID_REVOKED) { hdcp->connection.is_hdcp2_revoked = 1; status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_REVOKED; + } else { + status = MOD_HDCP_STATUS_HDCP2_VALIDATE_RX_ID_LIST_FAILURE; } } mutex_unlock(&psp->hdcp_context.mutex); -- 2.30.2