linux-kernel - Re: [PATCH v3 1/3] nvme-auth: alloc nvme_dhchap

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Date:   Tue, 17 Oct 2023 08:09:08 +0200
From:   Christoph Hellwig <hch@....de>
To:     Mark O'Donovan <shiftee@...teo.net>
Cc:     linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
        sagi@...mberg.me, hch@....de, axboe@...nel.dk, kbusch@...nel.org,
        hare@...e.de, Akash Appaiah <Akash.Appaiah@...l.com>
Subject: Re: [PATCH v3 1/3] nvme-auth: alloc nvme_dhchap_key as single
 buffer

> +struct nvme_dhchap_key *nvme_auth_alloc_key(u32 len, u8 hash)
> +{
> +	struct nvme_dhchap_key *key = kzalloc(len + sizeof(*key), GFP_KERNEL);

This should use the struct_size() helper:

	key = kzalloc(struct_size(key, key, len), GFP_KERNEL);

Otherwise the change looks good.