From mboxrd@z Thu Jan 1 00:00:00 1970 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 F39C7CDB47E for ; Thu, 19 Oct 2023 01:32:30 +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=FWYwyJ1jk1uEc2UR2uWPsbDqChxoyijiC1UTL4AHqhg=; b=ygarx+oigVWlAe S5LaVQC2DkJm/fwNZ6HzH8n5DqIyNlSqpfDDxbVZ7GM6HloIDaPtE5nToPq3oOL6LB5I/ctzKcAii aERPCKjlKdBEWIaCsE/X1LdkWFxaQa42VNCzVaw8lxS4IiZVcC6iCqbd+Mm/ldZAsISs70U3Kmptb 6bpgO0cL4Sj79B6JD2U58RVr5tNzR6xykzvYLeLjS1Ae3mrJfeeF3kVHNs2O2nqI4fQfK8l0cTIgj f1R2GwOwmYElYbd1IhfDcZUyfUyueIzcpGbxqH2hPteuiu4KjX5ybIihiUEPmQeYidWmdYo6gmhim ki32hK0qsqr3c4kvrYNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qtHtf-00G4GB-0t; Thu, 19 Oct 2023 01:32:23 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qtHtY-00G4F3-1T for linux-mtd@lists.infradead.org; Thu, 19 Oct 2023 01:32:20 +0000 Received: from kwepemm000014.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4S9qnx6hgGzvQBd; Thu, 19 Oct 2023 09:27:17 +0800 (CST) Received: from huawei.com (10.67.174.78) by kwepemm000014.china.huawei.com (7.193.23.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Thu, 19 Oct 2023 09:32:02 +0800 From: Yi Yang To: , , , , , , , , CC: , Subject: [PATCH v2] mtd: powernv_flash: check return value of devm_kasprintf() Date: Thu, 19 Oct 2023 01:30:50 +0000 Message-ID: <20231019013050.316022-1-yiyang13@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.67.174.78] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm000014.china.huawei.com (7.193.23.6) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231018_183216_725426_5D841470 X-CRM114-Status: UNSURE ( 9.10 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org devm_kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Ensure the allocation was successful by checking the pointer validity. Fixes: acfe63ec1c59 ("mtd: Convert to using %pOFn instead of device_node.name") Signed-off-by: Yi Yang --- drivers/mtd/devices/powernv_flash.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c index 66044f4f5bad..956a79c739e5 100644 --- a/drivers/mtd/devices/powernv_flash.c +++ b/drivers/mtd/devices/powernv_flash.c @@ -207,6 +207,10 @@ static int powernv_flash_set_driver_info(struct device *dev, * get them */ mtd->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFP", dev->of_node); + if (!mtd->name) { + dev_err(dev, "failed to allocate mtd->name\n"); + return -ENOMEM; + } mtd->type = MTD_NORFLASH; mtd->flags = MTD_WRITEABLE; mtd->size = size; -- 2.25.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/