[CRYPTO] api: fix crypto_alloc_base() return value
This patch makes crypto_alloc_base() return proper return value.
- If kzalloc() failure happens within __crypto_alloc_tfm(),
crypto_alloc_base() returns NULL. But crypto_alloc_base()
is supposed to return error code as pointer. So this patch
makes it return -ENOMEM in that case.
- crypto_alloc_base() is suppose to return -EINTR, if it is
interrupted by signal. But it may not return -EINTR.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/api.c b/crypto/api.c
index 2e84d4b..4fb7fa4 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -331,7 +331,7 @@
tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, flags);
tfm = kzalloc(tfm_size, GFP_KERNEL);
if (tfm == NULL)
- goto out;
+ goto out_err;
tfm->__crt_alg = alg;
@@ -355,6 +355,7 @@
crypto_exit_ops(tfm);
out_free_tfm:
kfree(tfm);
+out_err:
tfm = ERR_PTR(err);
out:
return tfm;
@@ -414,14 +415,14 @@
struct crypto_alg *alg;
alg = crypto_alg_mod_lookup(alg_name, type, mask);
- err = PTR_ERR(alg);
- tfm = ERR_PTR(err);
- if (IS_ERR(alg))
+ if (IS_ERR(alg)) {
+ err = PTR_ERR(alg);
goto err;
+ }
tfm = __crypto_alloc_tfm(alg, 0);
if (!IS_ERR(tfm))
- break;
+ return tfm;
crypto_mod_put(alg);
err = PTR_ERR(tfm);
@@ -433,9 +434,9 @@
err = -EINTR;
break;
}
- };
+ }
- return tfm;
+ return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(crypto_alloc_base);