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 X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DD1DC433DF for ; Wed, 17 Jun 2020 21:28:59 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 64E3821852 for ; Wed, 17 Jun 2020 21:28:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="YYohiGwZ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Y6dpZh7b" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 64E3821852 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Subject:To:From :Date: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=+wmNOeEK9ByVQFFXnYVXZCVyW9AzCpuF5cayhe2mvNk=; b=YYohiGwZXuVdDY Qp8fNRTMUCl66t5kYRIjFJEbM+StiHw/lfFjLyTid6DqG5ymnn1SWMepdN0B6wwg0DxiTRjwAAR2K fVbnwfiFJ4MvqN2fBGH29moxlUYEbaoy/5hL09i2M5gfthPfiSmPe/HAtZpcJZztJvsjxoEZ68NmO a7ihcQx9i8FLbiHSsxAtnqT/SlZMjbz3Wxj5WCVAaqMaQU0Nb/fpXgrDvLO3ZrkNxyrDUsgMczryP 6obEZLxpMVep/ngE8W5aPPxEAr1RTNV1LG8LtXo6kPB76r2oOttDi/B82LGK41tQGOQh9GFKxnfKp KmlVsjrU+xxABwp5FwjA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jlfc5-0004q1-DK; Wed, 17 Jun 2020 21:28:53 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jlfbz-0004mD-Dr for linux-arm-kernel@lists.infradead.org; Wed, 17 Jun 2020 21:28:51 +0000 Received: from embeddedor (unknown [189.207.59.248]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1DEFF2168B; Wed, 17 Jun 2020 21:28:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592429326; bh=IBFohY0NkQV6wxVWydl+9zLFk4xIZ9akrDNFlU3W6Uo=; h=Date:From:To:Cc:Subject:From; b=Y6dpZh7bJ3CfbAnLWwakIP0aW30Um9NyESw2YkrN7MB+b1GOEXvGSlJIn+Wujoipi 0yWJhrM9Iyd9LtnxrTYTU06A7f1WHIm6oVWIHYwTPT5tR9kJoY9+DAwwshCZpXKIFQ P5LizBptF6eP71PzEjvncvwupt6zpuAaJmR5xOS0= Date: Wed, 17 Jun 2020 16:34:07 -0500 From: "Gustavo A. R. Silva" To: Catalin Marinas , Will Deacon Subject: [PATCH][next] arm64: kexec_file: Use struct_size() in kmalloc() Message-ID: <20200617213407.GA1385@embeddedor> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200617_142847_497573_8F66E82B X-CRM114-Status: GOOD ( 11.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Gustavo A. R. Silva" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva --- arch/arm64/kernel/machine_kexec_file.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c index 522e6f517ec0..361a1143e09e 100644 --- a/arch/arm64/kernel/machine_kexec_file.c +++ b/arch/arm64/kernel/machine_kexec_file.c @@ -219,8 +219,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz) MEMBLOCK_NONE, &start, &end, NULL) nr_ranges++; - cmem = kmalloc(sizeof(struct crash_mem) + - sizeof(struct crash_mem_range) * nr_ranges, GFP_KERNEL); + cmem = kmalloc(struct_size(cmem, ranges, nr_ranges), GFP_KERNEL); if (!cmem) return -ENOMEM; -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel