From: hch@lst.de (Christoph Hellwig)
Date: Tue, 22 May 2018 12:01:58 +0200
Subject: [PATCHv2 04/11] nvmet: Add AEN configuration support
In-Reply-To: <20180522091004.39620-5-hare@suse.de>
References: <20180522091004.39620-1-hare@suse.de>
 <20180522091004.39620-5-hare@suse.de>
Message-ID: <20180522100158.GB11894@lst.de>

> +	case NVME_FEAT_ASYNC_EVENT:
> +		val32 = le32_to_cpu(req->cmd->common.cdw10[1]);
> +		req->sq->ctrl->aen_cfg = val32 & NVME_AEN_CFG_NS_ATTR;

This needs a validity check, and either be under a lock or very
carefully accessed using WRITE_ONCE/READ_ONCE.