[PATCH 10/12] vhost/crypto: fix build with GCC 12

[Stephen Hemminger]

On Wed, 18 May 2022 12:16:55 +0200
David Marchand <david.marchand at redhat.com> wrote:

> GCC 12 raises the following warning:
> 
> In file included from ../lib/mempool/rte_mempool.h:46,
>                  from ../lib/mbuf/rte_mbuf.h:38,
>                  from ../lib/vhost/vhost_crypto.c:7:
> ../lib/vhost/vhost_crypto.c: In function ‘rte_vhost_crypto_fetch_requests’:
> ../lib/eal/x86/include/rte_memcpy.h:371:9: warning: array subscript 1 is
>      outside array bounds of ‘struct virtio_crypto_op_data_req[1]’
>      [-Warray-bounds]
>   371 | rte_mov32((uint8_t *)dst + 3 * 32, (const uint8_t *)src + 3 * 32);
>       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../lib/vhost/vhost_crypto.c:1178:42: note: while referencing ‘req’
>  1178 |         struct virtio_crypto_op_data_req req;
>       |                                          ^~~
> 
> Check that copied length is within req boundaries.
> 
> Fixes: 3c79609fda7c ("vhost/crypto: handle virtually non-contiguous buffers")
> Cc: stable at dpdk.org
> 
> Signed-off-by: David Marchand <david.marchand at redhat.com>


Acked-by: Stephen Hemminger <stephen at networkplumber.org>