Re: [PATCH crypto -v4 1/2] AES-NI: Add support to accessunderlying blkcipher under cryptd ablkcipher

[Herbert Xu]

On Thu, Jan 15, 2009 at 04:28:33PM +0800, Huang Ying wrote:
>
> +	tfm = crypto_alloc_ablkcipher(cryptd_alg_name, type, mask);
> +	BUG_ON(crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_module !=
> +	       THIS_MODULE);

You need to check whether tfm is an error before dereferencing it.
Also it's probably better to free the tfm and return an error rather
than invoking BUG.

> --- a/include/crypto/algapi.h
> +++ b/include/crypto/algapi.h

Please create a new file for this, e.g., include/crypto/cryptd.h.

Thanks,
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