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 AFA55D1266D for ; Wed, 3 Dec 2025 06:11:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=qP5sN0hUQwWxsEVatNzNmE5VDxvJGTm+k7x61X+dsJw=; b=vdmUDfSVZj5YVQaUXA+6LFbHaD PP6y08qLW8WMeTFEa4odoCY+qrIm+RgNjus8KFKaW5luDB389ETLEhClK5svfJjEhVzjKutVKCgeZ 8+2GH5o3SdISHvmWOV8z4+I0Y4WUDhpV7THhBHaouYjyPkxg/2ZyPRafdJjSuLV1ktMd0HS7Gcy+s aYTvXEeeO3f/YCnc094CAy1Xy6UsffjISuLkBDByJB0JOiGbPM2hOOrSlUfSxF4sxT89t+3PcZmDP Cg/YrBxRpmBbkiFCrgdO0YX5ZPul/coNB07+5A/5VtzR+JT1dBin1BvmTYyjL7ny2BRtGqZ/WC1d/ L8ol5AFw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vQg50-00000006Agu-2hLp; Wed, 03 Dec 2025 06:11:10 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vQg4v-00000006Aet-0hhN for linux-nvme@lists.infradead.org; Wed, 03 Dec 2025 06:11:09 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 5CD1E68B05; Wed, 3 Dec 2025 07:10:46 +0100 (CET) Date: Wed, 3 Dec 2025 07:10:46 +0100 From: Christoph Hellwig To: Eugene Korenevsky Cc: Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4] nvme: nvme_identify_ns_descs: prevent oob Message-ID: <20251203061046.GA16562@lst.de> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251202_221105_345981_C82886D4 X-CRM114-Status: GOOD ( 12.85 ) X-BeenThere: linux-nvme@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-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Tue, Dec 02, 2025 at 09:22:13PM +0300, Eugene Korenevsky wrote: > @@ -1563,11 +1564,14 @@ static int nvme_identify_ns_descs(struct nvme_ctrl *ctrl, > goto free_data; > } > > - for (pos = 0; pos < NVME_IDENTIFY_DATA_SIZE; pos += len) { > - struct nvme_ns_id_desc *cur = data + pos; > + for (pos = 0; pos < NVME_IDENTIFY_DATA_SIZE - sizeof(*cur); pos += len) { Please avoid the overly long line. Otherwise this looks fine.