Re: [PATCH 06/26] dma-buf: system_heap: use array_size

John Stultz
2023-06-23T21:43:32Z

On Fri, Jun 23, 2023 at 2:15 PM Julia Lawall <Julia.Lawall@inria.fr> wrote:
>
> Use array_size to protect against multiplication overflows.
>
> The changes were done using the following Coccinelle semantic patch:
>
> // <smpl>
> @@
> size_t e1,e2;
> expression COUNT;
> identifier alloc = {vmalloc,vzalloc,kvmalloc,kvzalloc};
> @@
>
> (
> alloc(
> - (e1) * (e2)
> + array_size(e1, e2)
> ,...)
> |
> alloc(
> - (e1) * (COUNT)
> + array_size(COUNT, e1)
> ,...)
> )
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

Thanks for sending this out!

Acked-by: John Stultz <jstultz@google.com>