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[patch] crypto: drbg - fix an error code in drbg_init_sym_kernel()

Started byDan Carpenter <dan.carpenter@oracle.com>
First post2016-06-17 11:20 +0200
Last post2016-06-20 14:10 +0200
Articles 4 — 3 participants

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  [patch] crypto: drbg - fix an error code in drbg_init_sym_kernel() Dan Carpenter <dan.carpenter@oracle.com> - 2016-06-17 11:20 +0200
    Re: [patch] crypto: drbg - fix an error code in drbg_init_sym_kernel() Stephan Mueller <smueller@chronox.de> - 2016-06-17 11:30 +0200
      Re: [patch] crypto: drbg - fix an error code in drbg_init_sym_kernel() Stephan Mueller <smueller@chronox.de> - 2016-06-17 11:30 +0200
    Re: [patch] crypto: drbg - fix an error code in  drbg_init_sym_kernel() Herbert Xu <herbert@gondor.apana.org.au> - 2016-06-20 14:10 +0200

#1424841 — [patch] crypto: drbg - fix an error code in drbg_init_sym_kernel()

FromDan Carpenter <dan.carpenter@oracle.com>
Date2016-06-17 11:20 +0200
Subject[patch] crypto: drbg - fix an error code in drbg_init_sym_kernel()
Message-ID<rKY6t-4F5-13@gated-at.bofh.it>
We accidentally return PTR_ERR(NULL) which is success but we should
return -ENOMEM.

Fixes: 355912852115 ('crypto: drbg - use CTR AES instead of ECB AES')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/crypto/drbg.c b/crypto/drbg.c
index ded8638..6872d15 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1686,7 +1686,7 @@ static int drbg_init_sym_kernel(struct drbg_state *drbg)
 	if (!req) {
 		pr_info("DRBG: could not allocate request queue\n");
 		drbg_fini_sym_kernel(drbg);
-		return PTR_ERR(req);
+		return -ENOMEM;
 	}
 	drbg->ctr_req = req;
 	skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,

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#1424845

FromStephan Mueller <smueller@chronox.de>
Date2016-06-17 11:30 +0200
Message-ID<rKYg9-4In-9@gated-at.bofh.it>
In reply to#1424841
Am Freitag, 17. Juni 2016, 12:16:19 schrieb Dan Carpenter:

Hi Dan,

> We accidentally return PTR_ERR(NULL) which is success but we should
> return -ENOMEM.
> 
> Fixes: 355912852115 ('crypto: drbg - use CTR AES instead of ECB AES')
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Acked-by: Stephan Mueller <smueller@chronox.de>

That points to an error in the documentation of skcipher_request_alloc.

I will send a follow-up patch.
> 
> diff --git a/crypto/drbg.c b/crypto/drbg.c
> index ded8638..6872d15 100644
> --- a/crypto/drbg.c
> +++ b/crypto/drbg.c
> @@ -1686,7 +1686,7 @@ static int drbg_init_sym_kernel(struct drbg_state
> *drbg) if (!req) {
>  		pr_info("DRBG: could not allocate request queue\n");
>  		drbg_fini_sym_kernel(drbg);
> -		return PTR_ERR(req);
> +		return -ENOMEM;
>  	}
>  	drbg->ctr_req = req;
>  	skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,


Ciao
Stephan

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#1424846

FromStephan Mueller <smueller@chronox.de>
Date2016-06-17 11:30 +0200
Message-ID<rKYg9-4In-11@gated-at.bofh.it>
In reply to#1424845
Am Freitag, 17. Juni 2016, 11:19:58 schrieb Stephan Mueller:

Hi Stephan,

> Am Freitag, 17. Juni 2016, 12:16:19 schrieb Dan Carpenter:
> 
> Hi Dan,
> 
> > We accidentally return PTR_ERR(NULL) which is success but we should
> > return -ENOMEM.
> > 
> > Fixes: 355912852115 ('crypto: drbg - use CTR AES instead of ECB AES')
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> 
> Acked-by: Stephan Mueller <smueller@chronox.de>
> 
> That points to an error in the documentation of skcipher_request_alloc.

Apologies, that documentation issue has already been fixed in the 
cryptodev-2.6 tree. I was looking at the vanilla 4.6 tree for the 
documentation while I was preparing my patch.

Ciao
Stephan

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#1426526 — Re: [patch] crypto: drbg - fix an error code in drbg_init_sym_kernel()

FromHerbert Xu <herbert@gondor.apana.org.au>
Date2016-06-20 14:10 +0200
SubjectRe: [patch] crypto: drbg - fix an error code in drbg_init_sym_kernel()
Message-ID<rM6bF-83j-93@gated-at.bofh.it>
In reply to#1424841
On Fri, Jun 17, 2016 at 12:16:19PM +0300, Dan Carpenter wrote:
> We accidentally return PTR_ERR(NULL) which is success but we should
> return -ENOMEM.
> 
> Fixes: 355912852115 ('crypto: drbg - use CTR AES instead of ECB AES')
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

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

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