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crypto: user - fix use_after_free of struct xxx_request 

All crypto_stats functions use the struct xxx_request for feeding stats,
but in some case this structure could already be freed.

For fixing this, the needed parameters (len and alg) will be stored
before the request being executed.
Fixes: cac5818c25 ("crypto: user - Implement a generic crypto statistics")
Reported-by: syzbot <syzbot+6939a606a5305e9e9799@syzkaller.appspotmail.com>

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Corentin Labbe 2018-11-29 14:42:21 +00:00 committed by Herbert Xu
parent 76d09ea7c2
commit f7d76e05d0
11 changed files with 376 additions and 276 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
crypto/ahash.c
View File

@ -364,20 +364,28 @@ static int crypto_ahash_op(struct ahash_request *req,
int crypto_ahash_final(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int nbytes = req->nbytes;
int ret;
crypto_stats_get(alg);
ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->final);
crypto_stat_ahash_final(req, ret);
crypto_stats_ahash_final(nbytes, ret, alg);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_ahash_final);
int crypto_ahash_finup(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int nbytes = req->nbytes;
int ret;
crypto_stats_get(alg);
ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->finup);
crypto_stat_ahash_final(req, ret);
crypto_stats_ahash_final(nbytes, ret, alg);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_ahash_finup);
@ -385,13 +393,16 @@ EXPORT_SYMBOL_GPL(crypto_ahash_finup);
int crypto_ahash_digest(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int nbytes = req->nbytes;
int ret;
crypto_stats_get(alg);
if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
ret = -ENOKEY;
else
ret = crypto_ahash_op(req, tfm->digest);
crypto_stat_ahash_final(req, ret);
crypto_stats_ahash_final(nbytes, ret, alg);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_ahash_digest);

233
crypto/algapi.c
View File

@ -1078,6 +1078,239 @@ int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
}
EXPORT_SYMBOL_GPL(crypto_type_has_alg);
#ifdef CONFIG_CRYPTO_STATS
void crypto_stats_get(struct crypto_alg *alg)
{
crypto_alg_get(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_get);
void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->cipher_err_cnt);
} else {
atomic64_inc(&alg->encrypt_cnt);
atomic64_add(nbytes, &alg->encrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_encrypt);
void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->cipher_err_cnt);
} else {
atomic64_inc(&alg->decrypt_cnt);
atomic64_add(nbytes, &alg->decrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_ablkcipher_decrypt);
void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg,
int ret)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->aead_err_cnt);
} else {
atomic64_inc(&alg->encrypt_cnt);
atomic64_add(cryptlen, &alg->encrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_aead_encrypt);
void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg,
int ret)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->aead_err_cnt);
} else {
atomic64_inc(&alg->decrypt_cnt);
atomic64_add(cryptlen, &alg->decrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_aead_decrypt);
void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->akcipher_err_cnt);
} else {
atomic64_inc(&alg->encrypt_cnt);
atomic64_add(src_len, &alg->encrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_akcipher_encrypt);
void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->akcipher_err_cnt);
} else {
atomic64_inc(&alg->decrypt_cnt);
atomic64_add(src_len, &alg->decrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_akcipher_decrypt);
void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&alg->akcipher_err_cnt);
else
atomic64_inc(&alg->sign_cnt);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_akcipher_sign);
void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&alg->akcipher_err_cnt);
else
atomic64_inc(&alg->verify_cnt);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_akcipher_verify);
void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->compress_err_cnt);
} else {
atomic64_inc(&alg->compress_cnt);
atomic64_add(slen, &alg->compress_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_compress);
void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->compress_err_cnt);
} else {
atomic64_inc(&alg->decompress_cnt);
atomic64_add(slen, &alg->decompress_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_decompress);
void crypto_stats_ahash_update(unsigned int nbytes, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&alg->hash_err_cnt);
else
atomic64_add(nbytes, &alg->hash_tlen);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_ahash_update);
void crypto_stats_ahash_final(unsigned int nbytes, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->hash_err_cnt);
} else {
atomic64_inc(&alg->hash_cnt);
atomic64_add(nbytes, &alg->hash_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_ahash_final);
void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret)
{
if (ret)
atomic64_inc(&alg->kpp_err_cnt);
else
atomic64_inc(&alg->setsecret_cnt);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_kpp_set_secret);
void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret)
{
if (ret)
atomic64_inc(&alg->kpp_err_cnt);
else
atomic64_inc(&alg->generate_public_key_cnt);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_kpp_generate_public_key);
void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret)
{
if (ret)
atomic64_inc(&alg->kpp_err_cnt);
else
atomic64_inc(&alg->compute_shared_secret_cnt);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_kpp_compute_shared_secret);
void crypto_stats_rng_seed(struct crypto_alg *alg, int ret)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&alg->rng_err_cnt);
else
atomic64_inc(&alg->seed_cnt);
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_rng_seed);
void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen,
int ret)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->rng_err_cnt);
} else {
atomic64_inc(&alg->generate_cnt);
atomic64_add(dlen, &alg->generate_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_rng_generate);
void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->cipher_err_cnt);
} else {
atomic64_inc(&alg->encrypt_cnt);
atomic64_add(cryptlen, &alg->encrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_skcipher_encrypt);
void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret,
struct crypto_alg *alg)
{
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->cipher_err_cnt);
} else {
atomic64_inc(&alg->decrypt_cnt);
atomic64_add(cryptlen, &alg->decrypt_tlen);
}
crypto_alg_put(alg);
}
EXPORT_SYMBOL_GPL(crypto_stats_skcipher_decrypt);
#endif
static int __init crypto_algapi_init(void)
{
crypto_init_proc();

4
crypto/rng.c
View File

@ -35,9 +35,11 @@ static int crypto_default_rng_refcnt;
int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
{
struct crypto_alg *alg = tfm->base.__crt_alg;
u8 *buf = NULL;
int err;
crypto_stats_get(alg);
if (!seed && slen) {
buf = kmalloc(slen, GFP_KERNEL);
if (!buf)
@ -50,7 +52,7 @@ int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
}
err = crypto_rng_alg(tfm)->seed(tfm, seed, slen);
crypto_stat_rng_seed(tfm, err);
crypto_stats_rng_seed(alg, err);
out:
kzfree(buf);
return err;

38
include/crypto/acompress.h
View File

@ -234,34 +234,6 @@ static inline void acomp_request_set_params(struct acomp_req *req,
req->flags |= CRYPTO_ACOMP_ALLOC_OUTPUT;
}
static inline void crypto_stat_compress(struct acomp_req *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->compress_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->compress_cnt);
atomic64_add(req->slen, &tfm->base.__crt_alg->compress_tlen);
}
#endif
}
static inline void crypto_stat_decompress(struct acomp_req *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->compress_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->decompress_cnt);
atomic64_add(req->slen, &tfm->base.__crt_alg->decompress_tlen);
}
#endif
}
/**
* crypto_acomp_compress() -- Invoke asynchronous compress operation
*
@ -274,10 +246,13 @@ static inline void crypto_stat_decompress(struct acomp_req *req, int ret)
static inline int crypto_acomp_compress(struct acomp_req *req)
{
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int slen = req->slen;
int ret;
crypto_stats_get(alg);
ret = tfm->compress(req);
crypto_stat_compress(req, ret);
crypto_stats_compress(slen, ret, alg);
return ret;
}
@ -293,10 +268,13 @@ static inline int crypto_acomp_compress(struct acomp_req *req)
static inline int crypto_acomp_decompress(struct acomp_req *req)
{
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int slen = req->slen;
int ret;
crypto_stats_get(alg);
ret = tfm->decompress(req);
crypto_stat_decompress(req, ret);
crypto_stats_decompress(slen, ret, alg);
return ret;
}

38
include/crypto/aead.h
View File

@ -306,34 +306,6 @@ static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
return __crypto_aead_cast(req->base.tfm);
}
static inline void crypto_stat_aead_encrypt(struct aead_request *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->aead_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->encrypt_cnt);
atomic64_add(req->cryptlen, &tfm->base.__crt_alg->encrypt_tlen);
}
#endif
}
static inline void crypto_stat_aead_decrypt(struct aead_request *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->aead_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->decrypt_cnt);
atomic64_add(req->cryptlen, &tfm->base.__crt_alg->decrypt_tlen);
}
#endif
}
/**
* crypto_aead_encrypt() - encrypt plaintext
* @req: reference to the aead_request handle that holds all information
@ -356,13 +328,16 @@ static inline void crypto_stat_aead_decrypt(struct aead_request *req, int ret)
static inline int crypto_aead_encrypt(struct aead_request *req)
{
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct crypto_alg *alg = aead->base.__crt_alg;
unsigned int cryptlen = req->cryptlen;
int ret;
crypto_stats_get(alg);
if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
ret = -ENOKEY;
else
ret = crypto_aead_alg(aead)->encrypt(req);
crypto_stat_aead_encrypt(req, ret);
crypto_stats_aead_encrypt(cryptlen, alg, ret);
return ret;
}
@ -391,15 +366,18 @@ static inline int crypto_aead_encrypt(struct aead_request *req)
static inline int crypto_aead_decrypt(struct aead_request *req)
{
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct crypto_alg *alg = aead->base.__crt_alg;
unsigned int cryptlen = req->cryptlen;
int ret;
crypto_stats_get(alg);
if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
ret = -ENOKEY;
else if (req->cryptlen < crypto_aead_authsize(aead))
ret = -EINVAL;
else
ret = crypto_aead_alg(aead)->decrypt(req);
crypto_stat_aead_decrypt(req, ret);
crypto_stats_aead_decrypt(cryptlen, alg, ret);
return ret;
}

74
include/crypto/akcipher.h
View File

@ -271,62 +271,6 @@ static inline unsigned int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
return alg->max_size(tfm);
}
static inline void crypto_stat_akcipher_encrypt(struct akcipher_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->akcipher_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->encrypt_cnt);
atomic64_add(req->src_len, &tfm->base.__crt_alg->encrypt_tlen);
}
#endif
}
static inline void crypto_stat_akcipher_decrypt(struct akcipher_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->akcipher_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->decrypt_cnt);
atomic64_add(req->src_len, &tfm->base.__crt_alg->decrypt_tlen);
}
#endif
}
static inline void crypto_stat_akcipher_sign(struct akcipher_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&tfm->base.__crt_alg->akcipher_err_cnt);
else
atomic64_inc(&tfm->base.__crt_alg->sign_cnt);
#endif
}
static inline void crypto_stat_akcipher_verify(struct akcipher_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&tfm->base.__crt_alg->akcipher_err_cnt);
else
atomic64_inc(&tfm->base.__crt_alg->verify_cnt);
#endif
}
/**
* crypto_akcipher_encrypt() - Invoke public key encrypt operation
*
@ -341,10 +285,13 @@ static inline int crypto_akcipher_encrypt(struct akcipher_request *req)
{
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
unsigned int src_len = req->src_len;
int ret;
crypto_stats_get(calg);
ret = alg->encrypt(req);
crypto_stat_akcipher_encrypt(req, ret);
crypto_stats_akcipher_encrypt(src_len, ret, calg);
return ret;
}
@ -362,10 +309,13 @@ static inline int crypto_akcipher_decrypt(struct akcipher_request *req)
{
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
unsigned int src_len = req->src_len;
int ret;
crypto_stats_get(calg);
ret = alg->decrypt(req);
crypto_stat_akcipher_decrypt(req, ret);
crypto_stats_akcipher_decrypt(src_len, ret, calg);
return ret;
}
@ -383,10 +333,12 @@ static inline int crypto_akcipher_sign(struct akcipher_request *req)
{
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
int ret;
crypto_stats_get(calg);
ret = alg->sign(req);
crypto_stat_akcipher_sign(req, ret);
crypto_stats_akcipher_sign(ret, calg);
return ret;
}
@ -404,10 +356,12 @@ static inline int crypto_akcipher_verify(struct akcipher_request *req)
{
struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
int ret;
crypto_stats_get(calg);
ret = alg->verify(req);
crypto_stat_akcipher_verify(req, ret);
crypto_stats_akcipher_verify(ret, calg);
return ret;
}

32
include/crypto/hash.h
View File

@ -412,32 +412,6 @@ static inline void *ahash_request_ctx(struct ahash_request *req)
int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen);
static inline void crypto_stat_ahash_update(struct ahash_request *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&tfm->base.__crt_alg->hash_err_cnt);
else
atomic64_add(req->nbytes, &tfm->base.__crt_alg->hash_tlen);
#endif
}
static inline void crypto_stat_ahash_final(struct ahash_request *req, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->hash_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->hash_cnt);
atomic64_add(req->nbytes, &tfm->base.__crt_alg->hash_tlen);
}
#endif
}
/**
* crypto_ahash_finup() - update and finalize message digest
* @req: reference to the ahash_request handle that holds all information
@ -552,10 +526,14 @@ static inline int crypto_ahash_init(struct ahash_request *req)
*/
static inline int crypto_ahash_update(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int nbytes = req->nbytes;
int ret;
crypto_stats_get(alg);
ret = crypto_ahash_reqtfm(req)->update(req);
crypto_stat_ahash_update(req, ret);
crypto_stats_ahash_update(nbytes, ret, alg);
return ret;
}

48
include/crypto/kpp.h
View File

@ -268,42 +268,6 @@ struct kpp_secret {
unsigned short len;
};
static inline void crypto_stat_kpp_set_secret(struct crypto_kpp *tfm, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret)
atomic64_inc(&tfm->base.__crt_alg->kpp_err_cnt);
else
atomic64_inc(&tfm->base.__crt_alg->setsecret_cnt);
#endif
}
static inline void crypto_stat_kpp_generate_public_key(struct kpp_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
if (ret)
atomic64_inc(&tfm->base.__crt_alg->kpp_err_cnt);
else
atomic64_inc(&tfm->base.__crt_alg->generate_public_key_cnt);
#endif
}
static inline void crypto_stat_kpp_compute_shared_secret(struct kpp_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
if (ret)
atomic64_inc(&tfm->base.__crt_alg->kpp_err_cnt);
else
atomic64_inc(&tfm->base.__crt_alg->compute_shared_secret_cnt);
#endif
}
/**
* crypto_kpp_set_secret() - Invoke kpp operation
*
@ -323,10 +287,12 @@ static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
const void *buffer, unsigned int len)
{
struct kpp_alg *alg = crypto_kpp_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
int ret;
crypto_stats_get(calg);
ret = alg->set_secret(tfm, buffer, len);
crypto_stat_kpp_set_secret(tfm, ret);
crypto_stats_kpp_set_secret(calg, ret);
return ret;
}
@ -347,10 +313,12 @@ static inline int crypto_kpp_generate_public_key(struct kpp_request *req)
{
struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
struct kpp_alg *alg = crypto_kpp_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
int ret;
crypto_stats_get(calg);
ret = alg->generate_public_key(req);
crypto_stat_kpp_generate_public_key(req, ret);
crypto_stats_kpp_generate_public_key(calg, ret);
return ret;
}
@ -368,10 +336,12 @@ static inline int crypto_kpp_compute_shared_secret(struct kpp_request *req)
{
struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
struct kpp_alg *alg = crypto_kpp_alg(tfm);
struct crypto_alg *calg = tfm->base.__crt_alg;
int ret;
crypto_stats_get(calg);
ret = alg->compute_shared_secret(req);
crypto_stat_kpp_compute_shared_secret(req, ret);
crypto_stats_kpp_compute_shared_secret(calg, ret);
return ret;
}

27
include/crypto/rng.h
View File

@ -122,29 +122,6 @@ static inline void crypto_free_rng(struct crypto_rng *tfm)
crypto_destroy_tfm(tfm, crypto_rng_tfm(tfm));
}
static inline void crypto_stat_rng_seed(struct crypto_rng *tfm, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret && ret != -EINPROGRESS && ret != -EBUSY)
atomic64_inc(&tfm->base.__crt_alg->rng_err_cnt);
else
atomic64_inc(&tfm->base.__crt_alg->seed_cnt);
#endif
}
static inline void crypto_stat_rng_generate(struct crypto_rng *tfm,
unsigned int dlen, int ret)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&tfm->base.__crt_alg->rng_err_cnt);
} else {
atomic64_inc(&tfm->base.__crt_alg->generate_cnt);
atomic64_add(dlen, &tfm->base.__crt_alg->generate_tlen);
}
#endif
}
/**
* crypto_rng_generate() - get random number
* @tfm: cipher handle
@ -163,10 +140,12 @@ static inline int crypto_rng_generate(struct crypto_rng *tfm,
const u8 *src, unsigned int slen,
u8 *dst, unsigned int dlen)
{
struct crypto_alg *alg = tfm->base.__crt_alg;
int ret;
crypto_stats_get(alg);
ret = crypto_rng_alg(tfm)->generate(tfm, src, slen, dst, dlen);
crypto_stat_rng_generate(tfm, dlen, ret);
crypto_stats_rng_generate(alg, dlen, ret);
return ret;
}

36
include/crypto/skcipher.h
View File

@ -486,32 +486,6 @@ static inline struct crypto_sync_skcipher *crypto_sync_skcipher_reqtfm(
return container_of(tfm, struct crypto_sync_skcipher, base);
}
static inline void crypto_stat_skcipher_encrypt(struct skcipher_request *req,
int ret, struct crypto_alg *alg)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->cipher_err_cnt);
} else {
atomic64_inc(&alg->encrypt_cnt);
atomic64_add(req->cryptlen, &alg->encrypt_tlen);
}
#endif
}
static inline void crypto_stat_skcipher_decrypt(struct skcipher_request *req,
int ret, struct crypto_alg *alg)
{
#ifdef CONFIG_CRYPTO_STATS
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&alg->cipher_err_cnt);
} else {
atomic64_inc(&alg->decrypt_cnt);
atomic64_add(req->cryptlen, &alg->decrypt_tlen);
}
#endif
}
/**
* crypto_skcipher_encrypt() - encrypt plaintext
* @req: reference to the skcipher_request handle that holds all information
@ -526,13 +500,16 @@ static inline void crypto_stat_skcipher_decrypt(struct skcipher_request *req,
static inline int crypto_skcipher_encrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int cryptlen = req->cryptlen;
int ret;
crypto_stats_get(alg);
if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
ret = -ENOKEY;
else
ret = tfm->encrypt(req);
crypto_stat_skcipher_encrypt(req, ret, tfm->base.__crt_alg);
crypto_stats_skcipher_encrypt(cryptlen, ret, alg);
return ret;
}
@ -550,13 +527,16 @@ static inline int crypto_skcipher_encrypt(struct skcipher_request *req)
static inline int crypto_skcipher_decrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct crypto_alg *alg = tfm->base.__crt_alg;
unsigned int cryptlen = req->cryptlen;
int ret;
crypto_stats_get(alg);
if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
ret = -ENOKEY;
else
ret = tfm->decrypt(req);
crypto_stat_skcipher_decrypt(req, ret, tfm->base.__crt_alg);
crypto_stats_skcipher_decrypt(cryptlen, ret, alg);
return ret;
}

105
include/linux/crypto.h
View File

@ -557,6 +557,69 @@ struct crypto_alg {
} CRYPTO_MINALIGN_ATTR;
#ifdef CONFIG_CRYPTO_STATS
void crypto_stats_get(struct crypto_alg *alg);
void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, struct crypto_alg *alg);
void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, struct crypto_alg *alg);
void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret);
void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret);
void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg);
void crypto_stats_ahash_final(unsigned int nbytes, int ret, struct crypto_alg *alg);
void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, struct crypto_alg *alg);
void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, struct crypto_alg *alg);
void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg);
void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg);
void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg);
void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg);
void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret);
void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret);
void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret);
void crypto_stats_rng_seed(struct crypto_alg *alg, int ret);
void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int ret);
void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg);
void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg);
#else
static inline void crypto_stats_get(struct crypto_alg *alg)
{}
static inline void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret)
{}
static inline void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret)
{}
static inline void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_ahash_final(unsigned int nbytes, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret)
{}
static inline void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret)
{}
static inline void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret)
{}
static inline void crypto_stats_rng_seed(struct crypto_alg *alg, int ret)
{}
static inline void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int ret)
{}
static inline void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg)
{}
static inline void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg)
{}
#endif
/*
* A helper struct for waiting for completion of async crypto ops
*/
@ -975,38 +1038,6 @@ static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
return __crypto_ablkcipher_cast(req->base.tfm);
}
static inline void crypto_stat_ablkcipher_encrypt(struct ablkcipher_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct ablkcipher_tfm *crt =
crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&crt->base->base.__crt_alg->cipher_err_cnt);
} else {
atomic64_inc(&crt->base->base.__crt_alg->encrypt_cnt);
atomic64_add(req->nbytes, &crt->base->base.__crt_alg->encrypt_tlen);
}
#endif
}
static inline void crypto_stat_ablkcipher_decrypt(struct ablkcipher_request *req,
int ret)
{
#ifdef CONFIG_CRYPTO_STATS
struct ablkcipher_tfm *crt =
crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
if (ret && ret != -EINPROGRESS && ret != -EBUSY) {
atomic64_inc(&crt->base->base.__crt_alg->cipher_err_cnt);
} else {
atomic64_inc(&crt->base->base.__crt_alg->decrypt_cnt);
atomic64_add(req->nbytes, &crt->base->base.__crt_alg->decrypt_tlen);
}
#endif
}
/**
* crypto_ablkcipher_encrypt() - encrypt plaintext
* @req: reference to the ablkcipher_request handle that holds all information
@ -1022,10 +1053,13 @@ static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
{
struct ablkcipher_tfm *crt =
crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
struct crypto_alg *alg = crt->base->base.__crt_alg;
unsigned int nbytes = req->nbytes;
int ret;
crypto_stats_get(alg);
ret = crt->encrypt(req);
crypto_stat_ablkcipher_encrypt(req, ret);
crypto_stats_ablkcipher_encrypt(nbytes, ret, alg);
return ret;
}
@ -1044,10 +1078,13 @@ static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
{
struct ablkcipher_tfm *crt =
crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
struct crypto_alg *alg = crt->base->base.__crt_alg;
unsigned int nbytes = req->nbytes;
int ret;
crypto_stats_get(alg);
ret = crt->decrypt(req);
crypto_stat_ablkcipher_decrypt(req, ret);
crypto_stats_ablkcipher_decrypt(nbytes, ret, alg);
return ret;
}