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Date:   Mon, 29 Nov 2021 10:44:41 +0000 (UTC)
From:   Kalle Valo <>
To:     Kees Cook <>
Cc:     Kees Cook <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,,,,,
Subject: Re: [PATCH] libertas: Use struct_group() for memcpy() region

Kees Cook <> 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 txpd around members tx_dest_addr_high
> and tx_dest_addr_low 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 queue_id.
> "pahole" shows no size nor member offset changes to struct txpd.
> "objdump -d" shows no object code changes.
> Signed-off-by: Kees Cook <>

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

5fd32ae0433a libertas: Use struct_group() for memcpy() region


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