From patchwork Tue Apr 11 05:54:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Irui Wang X-Patchwork-Id: 13207068 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 69710C76196 for ; Tue, 11 Apr 2023 05:55:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=W/bKPa4GnLP5In/IKmI6qdA/oKjLvzj0bZQZEL37AdE=; b=rXDHKtlq0mrlKc ZFj2u6HeD+IsLaufNFQiTbkFKtvziMXYy0/nVFH2n9pJR/rgfvCOUxc1za4tY4LrGPrJU/FDG+trr MDNdfIogg5dQ3TUtVYO0S8rfWnQQZG5l+cPqNfJdid+CxBgs2IAXE0PQWMmtsKXssMsabmvuMf7uB NCpKAfKEXAt2GqItah4KHwfGH5dU96T4+xL0OsBf5ocgt5+Drd74ESvxKNyMMbVu4EtWAXri6aBDR xebpC3tHpVtdOSsFMVkiyG2Xg47aYZDEanGoODK8i2AQEmXEUSzwpWKS3TdxmrwfKoyyuE4JukXnA qa5acVqhS06grgosjHbg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pm6xY-00GWIO-0n; Tue, 11 Apr 2023 05:54:28 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pm6xV-00GWHU-0E; Tue, 11 Apr 2023 05:54:26 +0000 X-UUID: 4c9a108cd82d11ed8687db9d93187ff1-20230410 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=hlzUNXvIMOQc13xK9X1uYOOly8rXvrRJ86fD7YnDQ/U=; b=Sg1Bfe8zvipETD43TMa8G9cAc0DlLJyY3dihZkmO8efWTESUiqQCDYD36MIZ9XhyZD6I+kK16feJpBIHHRlpYkueSJRl6BR0L5zzSNrn1MtaFJQLd3BNewIMNRbcUb+8u4IZMPvN70nBMxmlBTg6Yp4QrUzkGIXA5Ijuu2uMZzI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22,REQID:48efb36b-58de-4a18-954f-2985692e8a52,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:90 X-CID-INFO: VERSION:1.1.22,REQID:48efb36b-58de-4a18-954f-2985692e8a52,IP:0,URL :0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTIO N:quarantine,TS:90 X-CID-META: VersionHash:120426c,CLOUDID:1740eba0-8fcb-430b-954a-ba3f00fa94a5,B ulkID:230411135419Y7AV7SRZ,BulkQuantity:0,Recheck:0,SF:38|29|28|17|19|48,T C:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,CO L:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-UUID: 4c9a108cd82d11ed8687db9d93187ff1-20230410 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 268533197; Mon, 10 Apr 2023 22:54:18 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Tue, 11 Apr 2023 13:54:16 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Tue, 11 Apr 2023 13:54:15 +0800 From: Irui Wang To: Hans Verkuil , Mauro Carvalho Chehab , Matthias Brugger CC: , , , , , , Yunfei Dong , Irui Wang Subject: [PATCH v2, 1/2] media: mediatek: vcodec: make sure array index is in valid range Date: Tue, 11 Apr 2023 13:54:12 +0800 Message-ID: <20230411055413.539-2-irui.wang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230411055413.539-1-irui.wang@mediatek.com> References: <20230411055413.539-1-irui.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230410_225425_116306_2C289BDB X-CRM114-Status: GOOD ( 11.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CERT-C Characters and Strings: dev->reg_base[dev->venc_pdata->core_id] evaluates to an address that could be at negative offset of an array, check core id is in valid range. Signed-off-by: Irui Wang Reviewed-by: Alexandre Mergnat --- .../mediatek/vcodec/mtk_vcodec_enc_drv.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c index 9095186d5495..125d5722d07b 100644 --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c @@ -89,16 +89,24 @@ static irqreturn_t mtk_vcodec_enc_irq_handler(int irq, void *priv) struct mtk_vcodec_ctx *ctx; unsigned long flags; void __iomem *addr; + int core_id; spin_lock_irqsave(&dev->irqlock, flags); ctx = dev->curr_ctx; spin_unlock_irqrestore(&dev->irqlock, flags); - mtk_v4l2_debug(1, "id=%d coreid:%d", ctx->id, dev->venc_pdata->core_id); - addr = dev->reg_base[dev->venc_pdata->core_id] + - MTK_VENC_IRQ_ACK_OFFSET; + core_id = dev->venc_pdata->core_id; + if (core_id < 0 || core_id >= NUM_MAX_VCODEC_REG_BASE) { + mtk_v4l2_err("Invalid core id: %d, ctx id: %d", + core_id, ctx->id); + return IRQ_HANDLED; + } + + mtk_v4l2_debug(1, "id: %d, core id: %d", ctx->id, core_id); + + addr = dev->reg_base[core_id] + MTK_VENC_IRQ_ACK_OFFSET; - ctx->irq_status = readl(dev->reg_base[dev->venc_pdata->core_id] + + ctx->irq_status = readl(dev->reg_base[core_id] + (MTK_VENC_IRQ_STATUS_OFFSET)); clean_irq_status(ctx->irq_status, addr);