linux-kernel - Re: [PATCH 1/2] crypto: talitos - don't persistently map req_ctx->hw_context and req

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Message-ID: <VI1PR0402MB3342DC809DACC396FAA21A4698C50@VI1PR0402MB3342.eurprd04.prod.outlook.com>
Date:   Fri, 2 Mar 2018 18:19:23 +0000
From:   Horia Geantă <horia.geanta@....com>
To:     Christophe Leroy <christophe.leroy@....fr>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>
CC:     "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 1/2] crypto: talitos - don't persistently map
 req_ctx->hw_context and req_ctx->buf

On 2/26/2018 6:40 PM, Christophe Leroy wrote:
> Commit 49f9783b0cea ("crypto: talitos - do hw_context DMA mapping
> outside the requests") introduced a persistent dma mapping of
> req_ctx->hw_context
> Commit 37b5e8897eb5 ("crypto: talitos - chain in buffered data for ahash
> on SEC1") introduced a persistent dma mapping of req_ctx->buf
> 
> As there is no destructor for req_ctx (the request context), the
> associated dma handlers where set in ctx (the tfm context). This is
> wrong as several hash operations can run with the same ctx.
> 
> This patch removes this persistent mapping.
> 
> Reported-by: Horia Geanta <horia.geanta@....com>
> Fixes: 49f9783b0cea ("crypto: talitos - do hw_context DMA mapping outside the requests")
> Fixes: 37b5e8897eb5 ("crypto: talitos - chain in buffered data for ahash on SEC1")
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
Tested-by: Horia Geantă <horia.geanta@....com>

Please add this to 4.15.y -stable tree.

Thanks,
Horia