linux-kernel - Re: [PATCH] crypto/drbg: report backend_cra

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Date:	Thu, 11 Jun 2015 08:38:06 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:	Stephan Mueller <smueller@...onox.de>
Cc:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	sergey.senozhatsky.work@...il.com
Subject: Re: [PATCH] crypto/drbg: report backend_cra_name when allocation
 fails

On (06/10/15 17:09), Stephan Mueller wrote:
> Hi Sergey,
> 
> >Be more verbose and also report ->backend_cra_name when
> >crypto_alloc_shash() or crypto_alloc_cipher() fail in
> >drbg_init_hash_kernel() or drbg_init_sym_kernel()
> >correspondingly.
> >
> >Example
> > DRBG: could not allocate digest TFM handle: hmac(sha256)
> >
> >Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> 
> Headscratch -- the Kconfig should have HMAC selected for compilation. When 
> HMAC is available (regardless whether it is a module or not), it is pulled in 
> by the kernel crypto API. Thus, there should not have been the error that HMAC 
> is missing.
> 
> Can you send your .config file, please?
> 

Hi Stephan,

sure, will post it later (as soon as I get back to my laptop).

	-ss
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