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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-14 21:43:56 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-14 21:43:56 +0800
commit0e2d3a126338ebb213c8e32d8d1d8936d8e62d43 (patch)
tree1ff96752beb00d53321f2929c805552b4cb29742 /crypto/shash.c
parent8c32c516eb1c1f9c14d25478442137c698788975 (diff)
downloadlinux-stericsson-0e2d3a126338ebb213c8e32d8d1d8936d8e62d43.tar.gz
crypto: shash - Fix alignment in unaligned operations
When we encounter an unaligned pointer we are supposed to copy it to a temporary aligned location. However the temporary buffer isn't aligned properly. This patch fixes that. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/shash.c')
-rw-r--r--crypto/shash.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/crypto/shash.c b/crypto/shash.c
index e54328364a85..171c8f052f89 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -76,8 +76,9 @@ static int shash_update_unaligned(struct shash_desc *desc, const u8 *data,
unsigned long alignmask = crypto_shash_alignmask(tfm);
unsigned int unaligned_len = alignmask + 1 -
((unsigned long)data & alignmask);
- u8 buf[shash_align_buffer_size(unaligned_len, alignmask)]
+ u8 ubuf[shash_align_buffer_size(unaligned_len, alignmask)]
__attribute__ ((aligned));
+ u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
int err;
if (unaligned_len > len)
@@ -111,8 +112,9 @@ static int shash_final_unaligned(struct shash_desc *desc, u8 *out)
unsigned long alignmask = crypto_shash_alignmask(tfm);
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned int ds = crypto_shash_digestsize(tfm);
- u8 buf[shash_align_buffer_size(ds, alignmask)]
+ u8 ubuf[shash_align_buffer_size(ds, alignmask)]
__attribute__ ((aligned));
+ u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
int err;
err = shash->final(desc, buf);