* [PATCH] crypto: sun8i-ss - remove redundant memzero_explicit()
@ 2020-08-27 7:40 Denis Efremov
2020-08-27 8:03 ` Corentin Labbe
0 siblings, 1 reply; 5+ messages in thread
From: Denis Efremov @ 2020-08-27 7:40 UTC (permalink / raw)
To: Corentin Labbe; +Cc: Denis Efremov, Herbert Xu, linux-crypto, linux-kernel
Remove redundant memzero_explicit() in sun8i_ss_cipher() before calling
kfree_sensitive(). kfree_sensitive() will zero the memory with
memzero_explicit().
Signed-off-by: Denis Efremov <efremov@linux.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index deb8b39a86db..ed2a69f82e1c 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -248,7 +248,6 @@ static int sun8i_ss_cipher(struct skcipher_request *areq)
offset = areq->cryptlen - ivsize;
if (rctx->op_dir & SS_DECRYPTION) {
memcpy(areq->iv, backup_iv, ivsize);
- memzero_explicit(backup_iv, ivsize);
kfree_sensitive(backup_iv);
} else {
scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] crypto: sun8i-ss - remove redundant memzero_explicit()
2020-08-27 7:40 [PATCH] crypto: sun8i-ss - remove redundant memzero_explicit() Denis Efremov
@ 2020-08-27 8:03 ` Corentin Labbe
2020-08-27 12:12 ` Denis Efremov
2020-08-27 12:16 ` [PATCH v2] " Denis Efremov
0 siblings, 2 replies; 5+ messages in thread
From: Corentin Labbe @ 2020-08-27 8:03 UTC (permalink / raw)
To: Denis Efremov; +Cc: Herbert Xu, linux-crypto, linux-kernel
On Thu, Aug 27, 2020 at 10:40:23AM +0300, Denis Efremov wrote:
> Remove redundant memzero_explicit() in sun8i_ss_cipher() before calling
> kfree_sensitive(). kfree_sensitive() will zero the memory with
> memzero_explicit().
>
> Signed-off-by: Denis Efremov <efremov@linux.com>
> ---
> drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
> index deb8b39a86db..ed2a69f82e1c 100644
> --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
> +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
> @@ -248,7 +248,6 @@ static int sun8i_ss_cipher(struct skcipher_request *areq)
> offset = areq->cryptlen - ivsize;
> if (rctx->op_dir & SS_DECRYPTION) {
> memcpy(areq->iv, backup_iv, ivsize);
> - memzero_explicit(backup_iv, ivsize);
> kfree_sensitive(backup_iv);
> } else {
> scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
> --
> 2.26.2
>
Hello
Could you add:
Fixes: 453431a54934 ("mm, treewide: rename kzfree() to kfree_sensitive()")
Regards
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] crypto: sun8i-ss - remove redundant memzero_explicit()
2020-08-27 8:03 ` Corentin Labbe
@ 2020-08-27 12:12 ` Denis Efremov
2020-08-27 12:16 ` [PATCH v2] " Denis Efremov
1 sibling, 0 replies; 5+ messages in thread
From: Denis Efremov @ 2020-08-27 12:12 UTC (permalink / raw)
To: Corentin Labbe; +Cc: Herbert Xu, linux-crypto, linux-kernel
On 8/27/20 11:03 AM, Corentin Labbe wrote:
> Could you add:
> Fixes: 453431a54934 ("mm, treewide: rename kzfree() to kfree_sensitive()")
I doubt this change deserves fixes tag, since this is just a cleanup.
Anyway, I will send v2 with it.
Thanks,
Denis
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH v2] crypto: sun8i-ss - remove redundant memzero_explicit()
2020-08-27 8:03 ` Corentin Labbe
2020-08-27 12:12 ` Denis Efremov
@ 2020-08-27 12:16 ` Denis Efremov
2020-09-04 8:28 ` Herbert Xu
1 sibling, 1 reply; 5+ messages in thread
From: Denis Efremov @ 2020-08-27 12:16 UTC (permalink / raw)
To: Corentin Labbe; +Cc: Denis Efremov, Herbert Xu, linux-crypto, linux-kernel
Remove redundant memzero_explicit() in sun8i_ss_cipher() before calling
kfree_sensitive(). kfree_sensitive() will zero the memory with
memzero_explicit().
Fixes: 453431a54934 ("mm, treewide: rename kzfree() to kfree_sensitive()")
Signed-off-by: Denis Efremov <efremov@linux.com>
---
Changes in v2:
- fixes tag added
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index deb8b39a86db..ed2a69f82e1c 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -248,7 +248,6 @@ static int sun8i_ss_cipher(struct skcipher_request *areq)
offset = areq->cryptlen - ivsize;
if (rctx->op_dir & SS_DECRYPTION) {
memcpy(areq->iv, backup_iv, ivsize);
- memzero_explicit(backup_iv, ivsize);
kfree_sensitive(backup_iv);
} else {
scatterwalk_map_and_copy(areq->iv, areq->dst, offset,
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2] crypto: sun8i-ss - remove redundant memzero_explicit()
2020-08-27 12:16 ` [PATCH v2] " Denis Efremov
@ 2020-09-04 8:28 ` Herbert Xu
0 siblings, 0 replies; 5+ messages in thread
From: Herbert Xu @ 2020-09-04 8:28 UTC (permalink / raw)
To: Denis Efremov; +Cc: Corentin Labbe, linux-crypto, linux-kernel
On Thu, Aug 27, 2020 at 03:16:11PM +0300, Denis Efremov wrote:
> Remove redundant memzero_explicit() in sun8i_ss_cipher() before calling
> kfree_sensitive(). kfree_sensitive() will zero the memory with
> memzero_explicit().
>
> Fixes: 453431a54934 ("mm, treewide: rename kzfree() to kfree_sensitive()")
> Signed-off-by: Denis Efremov <efremov@linux.com>
> ---
> Changes in v2:
> - fixes tag added
>
> drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 1 -
> 1 file changed, 1 deletion(-)
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
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-09-04 8:28 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2020-08-27 7:40 [PATCH] crypto: sun8i-ss - remove redundant memzero_explicit() Denis Efremov
2020-08-27 8:03 ` Corentin Labbe
2020-08-27 12:12 ` Denis Efremov
2020-08-27 12:16 ` [PATCH v2] " Denis Efremov
2020-09-04 8:28 ` Herbert Xu
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