3 files changed, 15 insertions, 3 deletions

diff --git a/crypto/api.c b/crypto/api.c
index e26156f71839..34e02caffc2a 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -165,7 +165,7 @@ static unsigned int crypto_ctxsize(struct crypto_alg *alg, int flags)
                 break;
         }
 
-        return len + alg->cra_alignmask;
+        return len + (alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1));
 }
 
 struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 0c08c58252be..5158a9db4bc5 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -284,7 +284,11 @@ aes_hw_extkey_available(uint8_t key_len)
 
 static inline struct aes_ctx *aes_ctx(void *ctx)
 {
-        return (struct aes_ctx *)ALIGN((unsigned long)ctx, PADLOCK_ALIGNMENT);
+        unsigned long align = PADLOCK_ALIGNMENT;
+
+        if (align <= crypto_tfm_ctx_alignment())
+                align = 1;
+        return (struct aes_ctx *)ALIGN((unsigned long)ctx, align);
 }
 
 static int
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index d88bf8aa8b47..0ab1bc1152ca 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -229,6 +229,8 @@ struct crypto_tfm {
         } crt_u;
         
         struct crypto_alg *__crt_alg;
+
+        char __crt_ctx[] __attribute__ ((__aligned__));
 };
 
 /* 
@@ -301,7 +303,13 @@ static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
 
 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
 {
-        return (void *)&tfm[1];
+        return tfm->__crt_ctx;
+}
+
+static inline unsigned int crypto_tfm_ctx_alignment(void)
+{
+        struct crypto_tfm *tfm;
+        return __alignof__(tfm->__crt_ctx);
 }
 
 /*