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: 525727 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61359C433F5 for ; Wed, 15 Dec 2021 05:22:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239854AbhLOFWU (ORCPT ); Wed, 15 Dec 2021 00:22:20 -0500 Received: from smtp23.cstnet.cn ([159.226.251.23]:54180 "EHLO cstnet.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229616AbhLOFWU (ORCPT ); Wed, 15 Dec 2021 00:22:20 -0500 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/ Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.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 --- 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;