search for: backup_iv

...rivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c @@ -249,7 +249,6 @@ 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, @@ -367,10 +366,7 @@ void sun8i_ss_cipher_exit(struct crypto_tfm *tfm) { struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm); - i...

...rivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c @@ -249,7 +249,6 @@ 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, @@ -367,10 +366,7 @@ void sun8i_ss_cipher_exit(struct crypto_tfm *tfm) { struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm); - i...

...i-ss/sun8i-ss-cipher.c > +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c > @@ -249,7 +249,6 @@ 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, > @@ -367,10 +366,7 @@ void sun8i_ss_cipher_exit(struct crypto_tfm *tfm) > { > struct sun8i_cipher_...

...i-ss/sun8i-ss-cipher.c > +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c > @@ -249,7 +249,6 @@ 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, > @@ -367,10 +366,7 @@ void sun8i_ss_cipher_exit(struct crypto_tfm *tfm) > { > struct sun8i_cipher_...

This patchset makes a global rename of the kzfree() to kfree_sensitive() to highlight the fact buffer clearing is only needed if the data objects contain sensitive information like encrpytion key. The fact that kzfree() uses memset() to do the clearing isn't totally safe either as compiler may compile out the clearing in their optimizer. Instead, the new kfree_sensitive() uses

...a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c @@ -257,7 +257,7 @@ static int sun8i_ce_cipher(struct skcipher_request *areq) offset = areq->cryptlen - ivsize; if (rctx->op_dir & CE_DECRYPTION) { memcpy(areq->iv, backup_iv, ivsize); - kzfree(backup_iv); + kfree_sensitive(backup_iv); } else { scatterwalk_map_and_copy(areq->iv, areq->dst, offset, ivsize, 0); diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c index c89cb2ee2496....

...a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c @@ -257,7 +257,7 @@ static int sun8i_ce_cipher(struct skcipher_request *areq) offset = areq->cryptlen - ivsize; if (rctx->op_dir & CE_DECRYPTION) { memcpy(areq->iv, backup_iv, ivsize); - kzfree(backup_iv); + kfree_sensitive(backup_iv); } else { scatterwalk_map_and_copy(areq->iv, areq->dst, offset, ivsize, 0); diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c index 84d52fc3a2da....

...a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c @@ -257,7 +257,7 @@ static int sun8i_ce_cipher(struct skcipher_request *areq) offset = areq->cryptlen - ivsize; if (rctx->op_dir & CE_DECRYPTION) { memcpy(areq->iv, backup_iv, ivsize); - kzfree(backup_iv); + kfree_sensitive(backup_iv); } else { scatterwalk_map_and_copy(areq->iv, areq->dst, offset, ivsize, 0); diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c index c89cb2ee2496....

v5: - Break the btrfs patch out as a separate patch to be processed independently. - Update the commit log of patch 1 to make it less scary. - Add a kzfree backward compatibility macro in patch 2. v4: - Break out the memzero_explicit() change as suggested by Dan Carpenter so that it can be backported to stable. - Drop the "crypto: Remove unnecessary

v4: - Break out the memzero_explicit() change as suggested by Dan Carpenter so that it can be backported to stable. - Drop the "crypto: Remove unnecessary memzero_explicit()" patch for now as there can be a bit more discussion on what is best. It will be introduced as a separate patch later on after this one is merged. This patchset makes a global rename of the kzfree()

v4: - Break out the memzero_explicit() change as suggested by Dan Carpenter so that it can be backported to stable. - Drop the "crypto: Remove unnecessary memzero_explicit()" patch for now as there can be a bit more discussion on what is best. It will be introduced as a separate patch later on after this one is merged. This patchset makes a global rename of the kzfree()