Re: Remaining crypto API regressions with CONFIG_VMAP_STACK

From: Andy Lutomirski
Date: Sun Dec 11 2016 - 14:14:26 EST

On Fri, Dec 9, 2016 at 3:08 PM, Eric Biggers <ebiggers3@xxxxxxxxx> wrote:
> In the 4.9 kernel, virtually-mapped stacks will be supported and enabled by
> default on x86_64. This has been exposing a number of problems in which
> on-stack buffers are being passed into the crypto API, which to support crypto
> accelerators operates on 'struct page' rather than on virtual memory.

> fs/cifs/smbencrypt.c:96

This should use crypto_cipher_encrypt_one(), I think.