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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2022-11-25 05:36:39 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-12-02 11:12:40 +0100 |
| commit | 1c799571976da15e055f32a0e244697500e97f64 (patch) | |
| tree | ff0c437be4abe6c484137fc9eb46273285015582 /crypto | |
| parent | crypto: skcipher - Add ctx helpers with DMA alignment (diff) | |
| download | linux-1c799571976da15e055f32a0e244697500e97f64.tar.xz linux-1c799571976da15e055f32a0e244697500e97f64.zip | |
crypto: api - Increase MAX_ALGAPI_ALIGNMASK to 127
Previously we limited the maximum alignment mask to 63. This
is mostly due to stack usage for shash. This patch introduces
a separate limit for shash algorithms and increases the general
limit to 127 which is the value that we need for DMA allocations
on arm64.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/shash.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index 0f8543158826..868b6ba2b3b7 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -18,6 +18,8 @@ #include "internal.h" +#define MAX_SHASH_ALIGNMASK 63 + static const struct crypto_type crypto_shash_type; int shash_no_setkey(struct crypto_shash *tfm, const u8 *key, @@ -88,7 +90,7 @@ static int shash_update_unaligned(struct shash_desc *desc, const u8 *data, * We cannot count on __aligned() working for large values: * https://patchwork.kernel.org/patch/9507697/ */ - u8 ubuf[MAX_ALGAPI_ALIGNMASK * 2]; + u8 ubuf[MAX_SHASH_ALIGNMASK * 2]; u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1); int err; @@ -130,7 +132,7 @@ static int shash_final_unaligned(struct shash_desc *desc, u8 *out) * We cannot count on __aligned() working for large values: * https://patchwork.kernel.org/patch/9507697/ */ - u8 ubuf[MAX_ALGAPI_ALIGNMASK + HASH_MAX_DIGESTSIZE]; + u8 ubuf[MAX_SHASH_ALIGNMASK + HASH_MAX_DIGESTSIZE]; u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1); int err; @@ -524,6 +526,9 @@ static int shash_prepare_alg(struct shash_alg *alg) alg->statesize > HASH_MAX_STATESIZE) return -EINVAL; + if (base->cra_alignmask > MAX_SHASH_ALIGNMASK) + return -EINVAL; + if ((alg->export && !alg->import) || (alg->import && !alg->export)) return -EINVAL; |