On 8 March 2014 02:26, <behanw@xxxxxxxxxxxxxxxxxx> wrote:
> diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c
> index 7c7df47..3317578 100644
> --- a/net/mac80211/aes_ccm.c
> +++ b/net/mac80211/aes_ccm.c
> @@ -23,12 +23,14 @@ void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
> u8 *data, size_t data_len, u8 *mic)
> {
> struct scatterlist assoc, pt, ct[2];
> - struct {
> - struct aead_request req;
> - u8 priv[crypto_aead_reqsize(tfm)];
> - } aead_req;
>
> - memset(&aead_req, 0, sizeof(aead_req));
> + char aead_req_data[sizeof(struct aead_request) +
> + crypto_aead_reqsize(tfm) +
> + CRYPTO_MINALIGN] CRYPTO_MINALIGN_ATTR;
> +
> + struct aead_request *aead_req = (void *) aead_req_data;
Bad trick with regards to alignment.
The alignment requirement for struct aead_request is stronger than
what an array of chars may have.
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