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=0.1 required=3.0 tests=BAYES_50, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 D9F55C433DB for ; Sun, 14 Feb 2021 23:58:04 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (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 20C986024A for ; Sun, 14 Feb 2021 23:58:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 20C986024A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zeniv.linux.org.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id F0FC9100EBB9B; Sun, 14 Feb 2021 15:58:03 -0800 (PST) Received-SPF: None (mailfrom) identity=mailfrom; client-ip=2607:5300:60:148a::1; helo=zeniv-ca.linux.org.uk; envelope-from=viro@ftp.linux.org.uk; receiver= Received: from zeniv-ca.linux.org.uk (zeniv-ca.linux.org.uk [IPv6:2607:5300:60:148a::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id EEC7B100EBB97 for ; Sun, 14 Feb 2021 15:58:01 -0800 (PST) Received: from viro by zeniv-ca.linux.org.uk with local (Exim 4.94 #2 (Red Hat Linux)) id 1lBRH4-00E3lo-QQ; Sun, 14 Feb 2021 23:57:58 +0000 Date: Sun, 14 Feb 2021 23:57:58 +0000 From: Al Viro To: Ben Widawsky Subject: Re: [PATCH v2 4/8] cxl/mem: Add basic IOCTL interface Message-ID: References: <20210210000259.635748-1-ben.widawsky@intel.com> <20210210000259.635748-5-ben.widawsky@intel.com> <20210214231456.xnwitliczv6qwmjv@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Sender: Al Viro Message-ID-Hash: P7OBBWKVXSEEXFAZOG6R6B3NKVVARGMD X-Message-ID-Hash: P7OBBWKVXSEEXFAZOG6R6B3NKVVARGMD X-MailFrom: viro@ftp.linux.org.uk X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: linux-cxl@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, Bjorn Helgaas , Chris Browy , Christoph Hellwig , David Hildenbrand , David Rientjes , Jon Masters , Jonathan Cameron , Rafael Wysocki , Randy Dunlap , "John Groves (jgroves)" , "Kelley, Sean V" , kernel test robot , Dan Williams X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Sun, Feb 14, 2021 at 11:50:12PM +0000, Al Viro wrote: > check that len is reasonable > p = kmalloc(offsetof(struct foo, string[len]), GFP_KERNEL); > copy_from_user(p, user_object, len); offsetof(struct foo, string[len]), that is _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org