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From: Keith Busch <kbusch@kernel.org>
To: Guixin Liu <kanie@linux.alibaba.com>
Cc: Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
	Chaitanya Kulkarni <kch@nvidia.com>,
	Damien Le Moal <damien.lemoal@wdc.com>,
	linux-nvme@lists.infradead.org
Subject: Re: [PATCH] nvmet: fix NULL pointer dereference in nvmet_execute_identify_ns_zns()
Date: Mon, 10 Aug 2026 16:55:34 -0600	[thread overview]
Message-ID: <anpW5hx_HZQaC0A5@kbusch-mbp> (raw)
In-Reply-To: <20260804033605.3973127-1-kanie@linux.alibaba.com>

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.


      parent reply	other threads:[~2026-08-10 22:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-04  3:36 [PATCH] nvmet: fix NULL pointer dereference in nvmet_execute_identify_ns_zns() Guixin Liu
2026-08-04  4:29 ` Damien Le Moal
2026-08-04 16:18 ` Christoph Hellwig
2026-08-10 22:55 ` Keith Busch [this message]

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