From patchwork Wed Dec 15 05:21:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiasheng Jiang X-Patchwork-Id: 12677347 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 3EBF5C433EF for ; Wed, 15 Dec 2021 05:22:26 +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: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:In-Reply-To:References: List-Owner; bh=u7yia/uEZZmuObsJIxIGTuC8LtLWQpD/ehsyXsNUWCY=; b=g6I+/ldQHyjDRF Vn881m8ZFgD7v3GGDWi3s/JC43w9HjUejqwxIwlJp49+YcYg+SCRHt/LKOo0DapifU7f5Gv5IDf1q 1WWUu7gSBRAbVHdC+Ad4Z3w33FRRApE9kRXSxbzcUPJjqX8Z2g1V0m0wmmPqMZK/36nyO3p0H9cwy 67FugivIVuq8pYi5eIUVCwHXyg8sHdf+RukLVQrqJUI+2HYC63lQkKV7G8GupFTWSzkRKlzLp+y39 wm3L93VdgOYjatXj1AjMz8mqLXmzDguHExHTcuyBbfYHzSHjsbpAUXvhQCCelr+h7/R7n9e3Y5A3k 5DaZhJYUZbt4Rg8QN4nA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxMk7-00GhpT-Jc; Wed, 15 Dec 2021 05:22:19 +0000 Received: from smtp23.cstnet.cn ([159.226.251.23] helo=cstnet.cn) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxMjv-00GhoV-0F; Wed, 15 Dec 2021 05:22:08 +0000 Received: from localhost.localdomain (unknown [124.16.138.126]) by APP-03 (Coremail) with SMTP id rQCowABnbi53e7lh4DcEAw--.38941S2; Wed, 15 Dec 2021 13:21:59 +0800 (CST) From: Jiasheng Jiang To: tiffany.lin@mediatek.com, andrew-ct.chen@mediatek.com, mchehab@kernel.org, matthias.bgg@gmail.com Cc: linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Jiasheng Jiang Subject: [PATCH v2] media: mtk-vcodec: potential dereference of null pointer Date: Wed, 15 Dec 2021 13:21:57 +0800 Message-Id: <20211215052157.94172-1-jiasheng@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: rQCowABnbi53e7lh4DcEAw--.38941S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKFy8Aw4fXFyxCFy7Ww15urg_yoWkurc_Aa yqvF1xZr1UtwnxJF47tF1S9ryI9Fs8Kr40q3sxKFZIqa4UGF4rZr1DXF45Za1UXwnFvF98 Jas0vFW7A39xJjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbckFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCY02Avz4vE14v_GrWl 42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJV WUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAK I48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r 4UMIIF0xvE42xK8VAvwI8IcIk0rVWrZr1j6s0DMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF 0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUP5rcUUUUU= X-Originating-IP: [124.16.138.126] X-CM-SenderInfo: pmld2xxhqjqxpvfd2hldfou0/ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211214_212207_464889_D7F6A0DD X-CRM114-Status: UNSURE ( 7.50 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The return value of devm_kzalloc() needs to be checked. To avoid use of null pointer in case of thefailure of alloc. Fixes: 46233e91fa24 ("media: mtk-vcodec: move firmware implementations into their own files") Signed-off-by: Jiasheng Jiang Reviewed-by: Tzung-Bi Shih --- Changelog: v1 -> v2 *Change 1. Change the return value from "-EINVAL" to "-ENOMEM". --- drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c index cd27f637dbe7..769228093e48 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c @@ -102,6 +102,8 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_vpu_init(struct mtk_vcodec_dev *dev, vpu_wdt_reg_handler(fw_pdev, mtk_vcodec_vpu_reset_handler, dev, rst_id); fw = devm_kzalloc(&dev->plat_dev->dev, sizeof(*fw), GFP_KERNEL); + if (!fw) + return ERR_PTR(-ENOMEM); fw->type = VPU; fw->ops = &mtk_vcodec_vpu_msg; fw->pdev = fw_pdev;