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[2620:137:e000::1:20]) by mx.google.com with ESMTP id z20-20020a05622a061400b003f899c3e435si203924qta.448.2023.06.06.01.41.00; Tue, 06 Jun 2023 01:41:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236099AbjFFIAm (ORCPT + 99 others); Tue, 6 Jun 2023 04:00:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236973AbjFFIAI (ORCPT ); Tue, 6 Jun 2023 04:00:08 -0400 Received: from mail.nfschina.com (unknown [42.101.60.195]) by lindbergh.monkeyblade.net (Postfix) with SMTP id 481B4273D for ; Tue, 6 Jun 2023 00:57:35 -0700 (PDT) Received: from localhost.localdomain (unknown [180.167.10.98]) by mail.nfschina.com (Maildata Gateway V2.8.8) with ESMTPA id DBF29180121FCD; Tue, 6 Jun 2023 15:55:28 +0800 (CST) X-MD-Sfrom: suhui@nfschina.com X-MD-SrcIP: 180.167.10.98 From: Su Hui To: Douglas Anderson , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter Cc: u.kleine-koenig@pengutronix.de, andersson@kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Su Hui Subject: [PATCH] drm/bridge: ti-sn65dsi86: Avoid possible buffer overflow Date: Tue, 6 Jun 2023 15:55:27 +0800 Message-Id: <20230606075527.155346-1-suhui@nfschina.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,RDNS_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767941996796934613?= X-GMAIL-MSGID: =?utf-8?q?1767941996796934613?= Smatch error:buffer overflow 'ti_sn_bridge_refclk_lut' 5 <= 5. Fixes: cea86c5bb442 ("drm/bridge: ti-sn65dsi86: Implement the pwm_chip") Signed-off-by: Su Hui --- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 7a748785c545..952aae4221e7 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -305,7 +305,8 @@ static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata) * The PWM refclk is based on the value written to SN_DPPLL_SRC_REG, * regardless of its actual sourcing. */ - pdata->pwm_refclk_freq = ti_sn_bridge_refclk_lut[i]; + if (i < refclk_lut_size) + pdata->pwm_refclk_freq = ti_sn_bridge_refclk_lut[i]; } static void ti_sn65dsi86_enable_comms(struct ti_sn65dsi86 *pdata)