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authorMikulas Patocka <mpatocka@redhat.com>2020-07-09 23:20:42 -0700
committerMike Snitzer <snitzer@redhat.com>2020-09-29 16:33:08 -0400
commitcd74693870fb748d812867ba49af733d689a3604 (patch)
tree90cb2f8a2ab5e83a2d80f6a798b2b627737174e3 /drivers/md
parentd4a512edcc65704c5df51909caeab0495ba0ced3 (diff)
downloadlinux-cd74693870fb748d812867ba49af733d689a3604.tar.bz2
dm crypt: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY
Don't use crypto drivers that have the flag CRYPTO_ALG_ALLOCATES_MEMORY set. These drivers allocate memory and thus they are unsuitable for block I/O processing. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-crypt.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 380386c36921..392337f16ecf 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -424,7 +424,8 @@ static int crypt_iv_lmk_ctr(struct crypt_config *cc, struct dm_target *ti,
return -EINVAL;
}
- lmk->hash_tfm = crypto_alloc_shash("md5", 0, 0);
+ lmk->hash_tfm = crypto_alloc_shash("md5", 0,
+ CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(lmk->hash_tfm)) {
ti->error = "Error initializing LMK hash";
return PTR_ERR(lmk->hash_tfm);
@@ -586,7 +587,8 @@ static int crypt_iv_tcw_ctr(struct crypt_config *cc, struct dm_target *ti,
return -EINVAL;
}
- tcw->crc32_tfm = crypto_alloc_shash("crc32", 0, 0);
+ tcw->crc32_tfm = crypto_alloc_shash("crc32", 0,
+ CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(tcw->crc32_tfm)) {
ti->error = "Error initializing CRC32 in TCW";
return PTR_ERR(tcw->crc32_tfm);
@@ -773,7 +775,8 @@ static int crypt_iv_elephant_ctr(struct crypt_config *cc, struct dm_target *ti,
struct iv_elephant_private *elephant = &cc->iv_gen_private.elephant;
int r;
- elephant->tfm = crypto_alloc_skcipher("ecb(aes)", 0, 0);
+ elephant->tfm = crypto_alloc_skcipher("ecb(aes)", 0,
+ CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(elephant->tfm)) {
r = PTR_ERR(elephant->tfm);
elephant->tfm = NULL;
@@ -2154,7 +2157,8 @@ static int crypt_alloc_tfms_skcipher(struct crypt_config *cc, char *ciphermode)
return -ENOMEM;
for (i = 0; i < cc->tfms_count; i++) {
- cc->cipher_tfm.tfms[i] = crypto_alloc_skcipher(ciphermode, 0, 0);
+ cc->cipher_tfm.tfms[i] = crypto_alloc_skcipher(ciphermode, 0,
+ CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(cc->cipher_tfm.tfms[i])) {
err = PTR_ERR(cc->cipher_tfm.tfms[i]);
crypt_free_tfms(cc);
@@ -2180,7 +2184,8 @@ static int crypt_alloc_tfms_aead(struct crypt_config *cc, char *ciphermode)
if (!cc->cipher_tfm.tfms)
return -ENOMEM;
- cc->cipher_tfm.tfms_aead[0] = crypto_alloc_aead(ciphermode, 0, 0);
+ cc->cipher_tfm.tfms_aead[0] = crypto_alloc_aead(ciphermode, 0,
+ CRYPTO_ALG_ALLOCATES_MEMORY);
if (IS_ERR(cc->cipher_tfm.tfms_aead[0])) {
err = PTR_ERR(cc->cipher_tfm.tfms_aead[0]);
crypt_free_tfms(cc);
@@ -2667,7 +2672,7 @@ static int crypt_ctr_auth_cipher(struct crypt_config *cc, char *cipher_api)
return -ENOMEM;
strncpy(mac_alg, start, end - start);
- mac = crypto_alloc_ahash(mac_alg, 0, 0);
+ mac = crypto_alloc_ahash(mac_alg, 0, CRYPTO_ALG_ALLOCATES_MEMORY);
kfree(mac_alg);
if (IS_ERR(mac))