Re: [PATCH 08/26] virtio-mem: use array_size

David Hildenbrand
2023-06-26T07:41:18Z

On 23.06.23 23:14, Julia Lawall wrote:
> Use array_size to protect against multiplication overflows.
>
> The changes were done using the following Coccinelle semantic patch:
>
> // <smpl>
> @@
> expression E1, E2;
> constant C1, C2;
> identifier alloc = {vmalloc,vzalloc};
> @@
>
> (
> alloc(C1 * C2,...)
> |
> alloc(
> - (E1) * (E2)
> + array_size(E1, E2)
> ,...)
> )
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
>
> ---
> drivers/virtio/virtio_mem.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: David Hildenbrand <david@redhat.com>

--
Cheers,

David / dhildenb