ac_keysched
freezero(ctx->ac_keysched, ctx->ac_keysched_len);
aes_ctx->ac_keysched = ks;
bcopy(aes_ctx->ac_keysched, ks, aes_ctx->ac_keysched_len);
ctx->ac_keysched = ks;
bzero(aes_ctx.ac_keysched, aes_ctx.ac_keysched_len);
kmem_free(aes_ctx.ac_keysched, aes_ctx.ac_keysched_len);
bzero(aes_ctx.ac_keysched, aes_ctx.ac_keysched_len);
kmem_free(aes_ctx.ac_keysched, aes_ctx.ac_keysched_len);
bzero(aes_ctx->ac_keysched, aes_ctx->ac_keysched_len);
kmem_free(aes_ctx->ac_keysched,
aes_ctx->ac_keysched = keysched;