crypto: pcrypt - Use crypto_grab_aead
As AEAD has switched over to using frontend types, the function
crypto_init_spawn must not be used since it does not specify a
frontend type. Otherwise it leads to a crash when the spawn is
used.
This patch fixes it by switching over to crypto_grab_aead instead.
Fixes: 5d1d65f8bea6 ("crypto: aead - Convert top level interface to new style")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index ac115d5..3942a9f 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -60,7 +60,7 @@
static struct kset *pcrypt_kset;
struct pcrypt_instance_ctx {
- struct crypto_spawn spawn;
+ struct crypto_aead_spawn spawn;
unsigned int tfm_count;
};
@@ -307,57 +307,50 @@
crypto_free_aead(ctx->child);
}
-static struct crypto_instance *pcrypt_alloc_instance(struct crypto_alg *alg)
+static int pcrypt_init_instance(struct crypto_instance *inst,
+ struct crypto_alg *alg)
{
- struct crypto_instance *inst;
- struct pcrypt_instance_ctx *ctx;
- int err;
-
- inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
- if (!inst) {
- inst = ERR_PTR(-ENOMEM);
- goto out;
- }
-
- err = -ENAMETOOLONG;
if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
"pcrypt(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
- goto out_free_inst;
+ return -ENAMETOOLONG;
memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME);
- ctx = crypto_instance_ctx(inst);
- err = crypto_init_spawn(&ctx->spawn, alg, inst,
- CRYPTO_ALG_TYPE_MASK);
- if (err)
- goto out_free_inst;
-
inst->alg.cra_priority = alg->cra_priority + 100;
inst->alg.cra_blocksize = alg->cra_blocksize;
inst->alg.cra_alignmask = alg->cra_alignmask;
-out:
- return inst;
-
-out_free_inst:
- kfree(inst);
- inst = ERR_PTR(err);
- goto out;
+ return 0;
}
static struct crypto_instance *pcrypt_alloc_aead(struct rtattr **tb,
u32 type, u32 mask)
{
+ struct pcrypt_instance_ctx *ctx;
struct crypto_instance *inst;
struct crypto_alg *alg;
+ const char *name;
+ int err;
- alg = crypto_get_attr_alg(tb, type, (mask & CRYPTO_ALG_TYPE_MASK));
- if (IS_ERR(alg))
- return ERR_CAST(alg);
+ name = crypto_attr_alg_name(tb[1]);
+ if (IS_ERR(name))
+ return ERR_CAST(name);
- inst = pcrypt_alloc_instance(alg);
- if (IS_ERR(inst))
- goto out_put_alg;
+ inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
+ if (!inst)
+ return ERR_PTR(-ENOMEM);
+
+ ctx = crypto_instance_ctx(inst);
+ crypto_set_aead_spawn(&ctx->spawn, inst);
+
+ err = crypto_grab_aead(&ctx->spawn, name, 0, 0);
+ if (err)
+ goto out_free_inst;
+
+ alg = crypto_aead_spawn_alg(&ctx->spawn);
+ err = pcrypt_init_instance(inst, alg);
+ if (err)
+ goto out_drop_aead;
inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
inst->alg.cra_type = &crypto_aead_type;
@@ -377,9 +370,15 @@
inst->alg.cra_aead.decrypt = pcrypt_aead_decrypt;
inst->alg.cra_aead.givencrypt = pcrypt_aead_givencrypt;
-out_put_alg:
- crypto_mod_put(alg);
+out:
return inst;
+
+out_drop_aead:
+ crypto_drop_aead(&ctx->spawn);
+out_free_inst:
+ kfree(inst);
+ inst = ERR_PTR(err);
+ goto out;
}
static struct crypto_instance *pcrypt_alloc(struct rtattr **tb)
@@ -402,7 +401,7 @@
{
struct pcrypt_instance_ctx *ctx = crypto_instance_ctx(inst);
- crypto_drop_spawn(&ctx->spawn);
+ crypto_drop_aead(&ctx->spawn);
kfree(inst);
}