From patchwork Fri Jul 14 09:49:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason-JH.Lin" X-Patchwork-Id: 13313433 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 5D1DDC001DF for ; Fri, 14 Jul 2023 09:49:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9784110E846; Fri, 14 Jul 2023 09:49:26 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id AA03F10E843 for ; Fri, 14 Jul 2023 09:49:16 +0000 (UTC) X-UUID: aef91eec222b11ee9cb5633481061a41-20230714 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=h4uR7sIcsW0oD3DH3/+YWiBVGi54OMGtSqKkjMVXam0=; b=eH9ivg2hXh7RHTT7hYHzcU48QlHUa3l1JxoJmg5SW46EBpdHY8M1wbX8ocdUszdzuro+0VMqCrQpfGD3pg5HHno3/so51YDZPinoqhZBUCvCeWggg2G+m2kjZIYb1SJB1vtaU0gVDessXalLhhA0IJUW3Nw80RQ468WmuBk6xQQ=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.28, REQID:99505907-65cf-40a0-b82d-106c60c6cd7c, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:176cd25, CLOUDID:f9e49e87-44fb-401c-8de7-6a5572f1f5d5, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: aef91eec222b11ee9cb5633481061a41-20230714 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 272650915; Fri, 14 Jul 2023 17:49:10 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Fri, 14 Jul 2023 17:49:10 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 14 Jul 2023 17:49:10 +0800 From: Jason-JH.Lin To: Chun-Kuang Hu , AngeloGioacchino Del Regno , Alexandre Mergnat Subject: [PATCH v4 0/4] Fix mediatek-drm coverity issues Date: Fri, 14 Jul 2023 17:49:04 +0800 Message-ID: <20230714094908.13087-1-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N 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: , Cc: "Jason-JH . Lin" , Singo Chang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Project_Global_Chrome_Upstream_Group@mediatek.com, Jason-ch Chen , Nancy Lin , Johnson Wang , Shawn Sung , Matthias Brugger , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add this patch series to fix some mediatek-drm coverity issues. Change in v4: 1. Fix title and commit message in [PATCH v3 3/4]. Change in v3: 1. swap Fixes and Signed tag. 2. change cast (__u64) to '=' then ' *='. Change in v2: 1. remove kfree(pkt) in mtk_drm_crtc_create_pkt(). 2. change the statement of cnt reach to MAX_CRTC. 3. drop the mtk_gem_obj initialized patch. 4. change casting from unsined long to __u64. 5. add 'int offset' for multiplier calculation. 6. drop the unrelavaent modification in dereference null check patch. Jason-JH.Lin (4): drm/mediatek: Remove freeing not dynamic allocated memory drm/mediatek: Add cnt checking for coverity issue drm/mediatek: Fix unintentional integer overflow in multiplying different types drm/mediatek: Fix dereference before null check drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 7 ++---- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 5 ++++- drivers/gpu/drm/mediatek/mtk_drm_gem.c | 3 ++- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 28 ++++++++++++------------ 4 files changed, 22 insertions(+), 21 deletions(-)