From patchwork Tue Nov 5 14:01:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zicheng Qu X-Patchwork-Id: 13864049 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 01D3AD29FB8 for ; Wed, 6 Nov 2024 08:18:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 899DF10E65C; Wed, 6 Nov 2024 08:18:15 +0000 (UTC) Received: from szxga06-in.huawei.com (szxga06-in.huawei.com [45.249.212.32]) by gabe.freedesktop.org (Postfix) with ESMTPS id A5F1010E187; Tue, 5 Nov 2024 14:12:41 +0000 (UTC) Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4XjVfS4Zn5z1ypGd; Tue, 5 Nov 2024 22:12:48 +0800 (CST) Received: from kwepemd200012.china.huawei.com (unknown [7.221.188.145]) by mail.maildlp.com (Postfix) with ESMTPS id ABACB1A0188; Tue, 5 Nov 2024 22:12:38 +0800 (CST) Received: from huawei.com (10.67.175.84) by kwepemd200012.china.huawei.com (7.221.188.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.34; Tue, 5 Nov 2024 22:12:37 +0800 From: Zicheng Qu To: , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , Subject: [PATCH 0/2] drm/amd/display: Fix Null Pointer Dereference Issues Date: Tue, 5 Nov 2024 14:01:35 +0000 Message-ID: <20241105140137.2465572-1-quzicheng@huawei.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.67.175.84] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemd200012.china.huawei.com (7.221.188.145) X-Mailman-Approved-At: Wed, 06 Nov 2024 08:18:14 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi all, I am submitting two patches to fix null pointer dereference issues in the AMD display driver. 1. Patch 1/2 (Fixes: 8e4ed3cf1642): Add null checks in dcn20_program_pipe() to prevent potential crashes when accessing plane_state. 2. Patch 2/2 (Fixes: 0baae6246307): Ensures pipe_ctx->plane_state is checked in hwss_setup_dpp() to improve function stability. Thanks for reviewing! Zicheng Qu (2): drm/amd/display: Fix null check for pipe_ctx->plane_state in dcn20_program_pipe drm/amd/display: Fix null check for pipe_ctx->plane_state in hwss_setup_dpp drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c | 3 +++ drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 6 +++--- 2 files changed, 6 insertions(+), 3 deletions(-)