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Message-ID: <169701602833.2760941.2948588134703156601.kvalo@kernel.org> Date: Wed, 11 Oct 2023 09:20:30 +0000 (UTC) From: Kalle Valo <kvalo@...nel.org> To: "Gustavo A. R. Silva" <gustavoars@...nel.org> Cc: linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org, "Gustavo A. R. Silva" <gustavoars@...nel.org>, linux-hardening@...r.kernel.org Subject: Re: [next] wifi: hostap: Add __counted_by for struct prism2_download_data and use struct_size() "Gustavo A. R. Silva" <gustavoars@...nel.org> wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for > array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > While there, use struct_size() helper, instead of the open-coded > version, to calculate the size for the allocation of the whole > flexible structure, including of course, the flexible-array member. > > This code was found with the help of Coccinelle, and audited and > fixed manually. > > Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org> > Reviewed-by: Kees Cook <keescook@...omium.org> Patch applied to wireless-next.git, thanks. 5cf47dc14158 wifi: hostap: Add __counted_by for struct prism2_download_data and use struct_size() -- https://patchwork.kernel.org/project/linux-wireless/patch/ZSRXXvWMMkm7qqRW@work/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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