linux-kernel - Re: [PATCH 1/2] crypto: virtio: Fix src/dst scatterlist calculation in __virtio_crypto_skcipher_do

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Date:   Mon, 25 May 2020 08:05:02 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     longpeng2@...wei.com, linux-crypto@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Cc:     linux-kernel@...r.kernel.org,
        Arei Gonglei <arei.gonglei@...wei.com>,
        Corentin Labbe <clabbe@...libre.com>,
        "David S. Miller" <davem@...emloft.net>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: [PATCH 1/2] crypto: virtio: Fix src/dst scatterlist calculation
 in __virtio_crypto_skcipher_do_req()

> The system will crash when we insmod crypto/tcrypt.ko whit mode=38.

* I suggest to use the word “with” in this sentence.

* Will it be helpful to explain the passed mode number?

> BTW I add a check for sg_nents_for_len() its return value since
> sg_nents_for_len() function could fail.

Please reconsider also development consequences for this suggestion.
Will a separate update step be more appropriate for the addition of
an input parameter validation?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=9cb1fd0efd195590b828b9b865421ad345a4a145#n138

Would you like to add the tag “Fixes” to the commit message?

Regards,
Markus