On Fri, 2014-03-07 at 17:26 -0800, behanw@xxxxxxxxxxxxxxxxxx wrote:
> From: Jan-Simon Möller <dl9pf@xxxxxx>
>
> Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99
> compliant equivalent. This is the original VLAIS struct.
[]
> diff --git 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;
Can this be a too large amount of stack?
Is crypto_aead_reqsize() limited to < ~1k?
Perhaps it'd be better to use kzalloc for this
or another reserved pool
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