linux-kernel - Re: [PATCH] crypto: engine - do not requeue in case of fatal error

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20200528073426.GB32600@gondor.apana.org.au>
Date:   Thu, 28 May 2020 17:34:26 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Iuliana Prodan <iuliana.prodan@....com>
Cc:     Baolin Wang <baolin.wang@...aro.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Horia Geanta <horia.geanta@....com>,
        Aymen Sghaier <aymen.sghaier@....com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-imx <linux-imx@....com>
Subject: Re: [PATCH] crypto: engine - do not requeue in case of fatal error

On Wed, May 20, 2020 at 01:17:25AM +0300, Iuliana Prodan wrote:
> Now, in crypto-engine, if hardware queue is full (-ENOSPC),
> requeue request regardless of MAY_BACKLOG flag.
> If hardware throws any other error code (like -EIO, -EINVAL,
> -ENOMEM, etc.) only MAY_BACKLOG requests are enqueued back into
> crypto-engine's queue, since the others can be dropped.
> The latter case can be fatal error, so those cannot be recovered from.
> For example, in CAAM driver, -EIO is returned in case the job descriptor
> is broken, so there is no possibility to fix the job descriptor.
> Therefore, these errors might be fatal error, so we shouldn’t
> requeue the request. This will just be pass back and forth between
> crypto-engine and hardware.
> 
> Fixes: 6a89f492f8e5 ("crypto: engine - support for parallel requests based on retry mechanism")
> Signed-off-by: Iuliana Prodan <iuliana.prodan@....com>
> ---
>  crypto/crypto_engine.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt