linux-kernel - Re: [BUG] crypto: ccree: driver does not handle case where cryptlen = authsize =0

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Message-ID: <YiUsWosH+MKMF7DQ@gondor.apana.org.au>
Date:   Mon, 7 Mar 2022 09:49:14 +1200
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Corentin Labbe <clabbe.montjoie@...il.com>
Cc:     Gilad Ben-Yossef <gilad@...yossef.com>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] crypto: ccree: driver does not handle case where cryptlen
 = authsize =0

On Fri, Mar 04, 2022 at 02:30:06PM +0100, Corentin Labbe wrote:
>
> Hello
> 
> I got:
> [   17.563793] ------------[ cut here ]------------
> [   17.568492] DMA-API: ccree e6601000.crypto: device driver frees DMA memory with different direction [device address=0x0000000078fe5800] [size=8 bytes] [mapped with DMA_TO_DEVICE] [unmapped with DMA_BIDIRECTIONAL]

The direction argument during unmap must match whatever direction
you used during the original map call.

Cheers,
-- 
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