From patchwork Thu Aug 12 05:14:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 496819 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 1C370C432BE for ; Thu, 12 Aug 2021 05:14:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F29DA60F11 for ; Thu, 12 Aug 2021 05:14:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233627AbhHLFOy (ORCPT ); Thu, 12 Aug 2021 01:14:54 -0400 Received: from smtp05.smtpout.orange.fr ([80.12.242.127]:36380 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229956AbhHLFOx (ORCPT ); Thu, 12 Aug 2021 01:14:53 -0400 Received: from pop-os.home ([90.126.253.178]) by mwinf5d10 with ME id gVEQ250013riaq203VEQm2; Thu, 12 Aug 2021 07:14:25 +0200 X-ME-Helo: pop-os.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Thu, 12 Aug 2021 07:14:25 +0200 X-ME-IP: 90.126.253.178 From: Christophe JAILLET To: stanimir.varbanov@linaro.org, agross@kernel.org, bjorn.andersson@linaro.org, mchehab@kernel.org, mansur@codeaurora.org, swboyd@chromium.org Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] media: venus: core: Fix a potential NULL pointer dereference in an error handling path Date: Thu, 12 Aug 2021 07:14:22 +0200 Message-Id: X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The normal path of the function makes the assumption that 'pm_ops->core_power' may be NULL. We should make the same assumption in the error handling path or a NULL pointer dereference may occur. Add the missing test before calling 'pm_ops->core_power' Fixes: 9e8efdb57879 ("media: venus: core: vote for video-mem path") Signed-off-by: Christophe JAILLET --- drivers/media/platform/qcom/venus/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 91b15842c555..84cd92628cfd 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -472,7 +472,8 @@ static __maybe_unused int venus_runtime_suspend(struct device *dev) err_video_path: icc_set_bw(core->cpucfg_path, kbps_to_icc(1000), 0); err_cpucfg_path: - pm_ops->core_power(core, POWER_ON); + if (pm_ops->core_power) + pm_ops->core_power(core, POWER_ON); return ret; }