Re: [PATCH v2] intersil: Use struct_group() for memcpy() region

[Kalle Valo]

Kees Cook <keescook@xxxxxxxxxxxx> wrote:

> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> field bounds checking for memcpy(), memmove(), and memset(), avoid
> intentionally writing across neighboring fields.
> 
> Use struct_group() in struct hfa384x_tx_frame around members
> frame_control, duration_id, addr1, addr2, addr3, and seq_ctrl, so they
> can be referenced together. This will allow memcpy() and sizeof() to
> more easily reason about sizes, improve readability, and avoid future
> warnings about writing beyond the end of frame_control.
> 
> "pahole" shows no size nor member offset changes to struct
> hfa384x_tx_frame. "objdump -d" shows no object code changes.
> 
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>

Patch applied to wireless-drivers-next.git, thanks.

601d2293e27f intersil: Use struct_group() for memcpy() region

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20211119004646.2347920-1-keescook@xxxxxxxxxxxx/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches