On Wed, 21 Sep 2022 20:10:03 -0700 Kees Cook wrote:
> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> index 974e7138..4fe4c7544c1d 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -427,14 +427,15 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t
> gfp_mask,
>
Instead of discovering the kmalloc bucket size _after_ allocation, round
up proactively so the allocation is explicitly made for the full size,
allowing the compiler to correctly reason about the resulting size of
the buffer through the existing __alloc_size() hint.
This will allow for kernels
