* [PATCH] wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by
@ 2023-09-15 20:05 Kees Cook
2023-09-15 20:17 ` Gustavo A. R. Silva
2023-09-20 11:14 ` Kalle Valo
0 siblings, 2 replies; 3+ messages in thread
From: Kees Cook @ 2023-09-15 20:05 UTC (permalink / raw)
To: Arend van Spriel
Cc: Kees Cook, Franky Lin, Hante Meuleman, Kalle Valo,
Gustavo A. R. Silva, Hector Martin, Ryohei Kondo, Hans de Goede,
linux-wireless, brcm80211-dev-list.pdl, SHA-cyfmac-dev-list,
Nathan Chancellor, Nick Desaulniers, Tom Rix, Linus Walleij,
linux-kernel, llvm, linux-hardening
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 checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct brcmf_gscan_config.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Arend van Spriel <aspriel@gmail.com>
Cc: Franky Lin <franky.lin@broadcom.com>
Cc: Hante Meuleman <hante.meuleman@broadcom.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Hector Martin <marcan@marcan.st>
Cc: Ryohei Kondo <ryohei.kondo@cypress.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: linux-wireless@vger.kernel.org
Cc: brcm80211-dev-list.pdl@broadcom.com
Cc: SHA-cyfmac-dev-list@infineon.com
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
index bece26741d3a..6eef6bc430e2 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
@@ -1209,7 +1209,7 @@ struct brcmf_gscan_config {
u8 count_of_channel_buckets;
u8 retry_threshold;
__le16 lost_ap_window;
- struct brcmf_gscan_bucket_config bucket[];
+ struct brcmf_gscan_bucket_config bucket[] __counted_by(count_of_channel_buckets);
};
/**
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by
2023-09-15 20:05 [PATCH] wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by Kees Cook
@ 2023-09-15 20:17 ` Gustavo A. R. Silva
2023-09-20 11:14 ` Kalle Valo
1 sibling, 0 replies; 3+ messages in thread
From: Gustavo A. R. Silva @ 2023-09-15 20:17 UTC (permalink / raw)
To: Kees Cook, Arend van Spriel
Cc: Franky Lin, Hante Meuleman, Kalle Valo, Gustavo A. R. Silva,
Hector Martin, Ryohei Kondo, Hans de Goede, linux-wireless,
brcm80211-dev-list.pdl, SHA-cyfmac-dev-list, Nathan Chancellor,
Nick Desaulniers, Tom Rix, Linus Walleij, linux-kernel, llvm,
linux-hardening
On 9/15/23 14:05, Kees Cook 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 checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
>
> As found with Coccinelle[1], add __counted_by for struct brcmf_gscan_config.
>
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
>
> Cc: Arend van Spriel <aspriel@gmail.com>
> Cc: Franky Lin <franky.lin@broadcom.com>
> Cc: Hante Meuleman <hante.meuleman@broadcom.com>
> Cc: Kalle Valo <kvalo@kernel.org>
> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
> Cc: Hector Martin <marcan@marcan.st>
> Cc: Ryohei Kondo <ryohei.kondo@cypress.com>
> Cc: Hans de Goede <hdegoede@redhat.com>
> Cc: linux-wireless@vger.kernel.org
> Cc: brcm80211-dev-list.pdl@broadcom.com
> Cc: SHA-cyfmac-dev-list@infineon.com
> Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Thanks
--
Gustavo
> ---
> drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
> index bece26741d3a..6eef6bc430e2 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
> @@ -1209,7 +1209,7 @@ struct brcmf_gscan_config {
> u8 count_of_channel_buckets;
> u8 retry_threshold;
> __le16 lost_ap_window;
> - struct brcmf_gscan_bucket_config bucket[];
> + struct brcmf_gscan_bucket_config bucket[] __counted_by(count_of_channel_buckets);
> };
>
> /**
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by
2023-09-15 20:05 [PATCH] wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by Kees Cook
2023-09-15 20:17 ` Gustavo A. R. Silva
@ 2023-09-20 11:14 ` Kalle Valo
1 sibling, 0 replies; 3+ messages in thread
From: Kalle Valo @ 2023-09-20 11:14 UTC (permalink / raw)
To: Kees Cook
Cc: Arend van Spriel, Kees Cook, Franky Lin, Hante Meuleman,
Gustavo A. R. Silva, Hector Martin, Ryohei Kondo, Hans de Goede,
linux-wireless, brcm80211-dev-list.pdl, SHA-cyfmac-dev-list,
Nathan Chancellor, Nick Desaulniers, Tom Rix, Linus Walleij,
linux-kernel, llvm, linux-hardening
Kees Cook <keescook@chromium.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 checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
>
> As found with Coccinelle[1], add __counted_by for struct brcmf_gscan_config.
>
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
>
> Cc: Arend van Spriel <aspriel@gmail.com>
> Cc: Franky Lin <franky.lin@broadcom.com>
> Cc: Hante Meuleman <hante.meuleman@broadcom.com>
> Cc: Kalle Valo <kvalo@kernel.org>
> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
> Cc: Hector Martin <marcan@marcan.st>
> Cc: Ryohei Kondo <ryohei.kondo@cypress.com>
> Cc: Hans de Goede <hdegoede@redhat.com>
> Cc: linux-wireless@vger.kernel.org
> Cc: brcm80211-dev-list.pdl@broadcom.com
> Cc: SHA-cyfmac-dev-list@infineon.com
> Signed-off-by: Kees Cook <keescook@chromium.org>
> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Patch applied to wireless-next.git, thanks.
cf74cdc6e581 wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by
--
https://patchwork.kernel.org/project/linux-wireless/patch/20230915200542.never.417-kees@kernel.org/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-09-15 20:05 [PATCH] wifi: brcmfmac: Annotate struct brcmf_gscan_config with __counted_by Kees Cook
2023-09-15 20:17 ` Gustavo A. R. Silva
2023-09-20 11:14 ` Kalle Valo
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