Re: [PATCH v2] vhost/crypto: fix build with GCC 12

[David Marchand <david.marchand@redhat.com>]

On Thu, Jun 16, 2022 at 11:32 AM David Marchand
<david.marchand@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;
>       |                                          ^~~
>
> Split this function and separate the per descriptor copy.
> This makes the code clearer, and the compiler happier.
>
> Note: logs for errors have been moved to callers to avoid duplicates.
>
> Fixes: 3c79609fda7c ("vhost/crypto: handle virtually non-contiguous buffers")
> Cc: stable@dpdk.org
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>

Build fails on 32-bit.
I had seen the issue while testing but sent a non amended patch... v3 incoming.

-- 
David Marchand