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Date: Mon, 29 Nov 2021 10:45:05 +0000 (UTC) From: Kalle Valo <kvalo@...eaurora.org> To: Kees Cook <keescook@...omium.org> Cc: Kees Cook <keescook@...omium.org>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Lee Jones <lee.jones@...aro.org>, YueHaibing <yuehaibing@...wei.com>, Wan Jiabing <wanjiabing@...o.com>, linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH] libertas_tf: Use struct_group() for memcpy() region Kees Cook <keescook@...omium.org> wrote: > In preparation for FORTIFY_SOURCE performing compile-time and run-time > field array 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 tx_dest_addr_high. > > "pahole" shows no size nor member offset changes to struct txpd. > "objdump -d" shows no object code changes. > > Signed-off-by: Kees Cook <keescook@...omium.org> Patch applied to wireless-drivers-next.git, thanks. 642a57475b30 libertas_tf: Use struct_group() for memcpy() region -- https://patchwork.kernel.org/project/linux-wireless/patch/20211118184121.1283821-1-keescook@chromium.org/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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