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 2156FC5AD7B for ; Mon, 10 Aug 2026 22:55:39 +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=i+HOV1eEaaj5Xwzy6dQKpZWytvQwWK7C5huS7LM3iOA=; b=fPEY01TNpv6DrTkcnkXWl1sr8+ MSNhDeehGvOymM1o1My2KamTWdpLoTLkM6a4gz+YYnO0Kf6pFqy9siW+quzrS2fFRmetjLSZVC0Qw uF6NGAfQn+EWZy6WKmWJT1bGfsJ18cSI0kXDm1i6cdsq5U038O/1U6mRirNZhqahJTzb9dHHteXwr vnk+xEZAMBkVdZyfDdKOgznT+TxEP6EjI+pRJUSaxk9xcqeS88qP54vGNmEvlrbo+YwiczmdWD2Oz s59cjwbr31BrsrN/nip90/wk1aG0/3cbmvbSzMlmFr52+RO5pJzhZUvkDwnSBwX8su60fu1ZOtBff Dg88WmxA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtYuA-0000000CzjQ-1GlZ; Mon, 10 Aug 2026 22:55:38 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtYu8-0000000CzjI-2QeN for linux-nvme@lists.infradead.org; Mon, 10 Aug 2026 22:55:36 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id E85C040A81; Mon, 10 Aug 2026 22:55:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92E791F000E9; Mon, 10 Aug 2026 22:55:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786402535; bh=i+HOV1eEaaj5Xwzy6dQKpZWytvQwWK7C5huS7LM3iOA=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=WHrJnG1xQ8xt7H4vG9H/ZLbj9+U8ssXVWJ2hzkHbSIQhrA+ExeOiv2EfMWjEzuwuN YiZbn1Q2+DmSRt2/x8jrIbWCYttdYkBhLLEZknRO3KvDik2fVfxl8pzZ9Y6P8+BZ6x NIGL/zpZzS7AmL7UjCiwxrrkWAWlScS6AkO3r99SYYafOdBWTjkJgd1JP6OhEFdiXQ AFGu1cIss/WrFNrFgDVtAkw3ngABQtBtV8/caAo28TdBi6FJaF7tzUgXsF2IcwO/bC cRoRI6Uw/K/A4kAwXORFzI8umDb6FOKqBt7+qRD07DwJzc8r6Prl5qqjsbCLx50lbr pS6CGE0Dvo2WQ== Date: Mon, 10 Aug 2026 16:55:34 -0600 From: Keith Busch To: Guixin Liu Cc: Christoph Hellwig , Sagi Grimberg , Chaitanya Kulkarni , Damien Le Moal , linux-nvme@lists.infradead.org Subject: Re: [PATCH] nvmet: fix NULL pointer dereference in nvmet_execute_identify_ns_zns() Message-ID: References: <20260804033605.3973127-1-kanie@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260804033605.3973127-1-kanie@linux.alibaba.com> 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, Aug 04, 2026 at 11:36:05AM +0800, Guixin Liu wrote: > When a host issues an Identify command with CNS 05h (I/O Command Set > specific Identify Namespace) and CSI 02h (ZNS) targeting a file-backed > namespace, nvmet_execute_identify_ns_zns() calls bdev_is_zoned() on > req->ns->bdev. A file-backed namespace has no block device, so > req->ns->bdev is NULL and bdev_is_zoned() dereferences it, oopsing. Thanks, applied to nvme-7.3.