From 45aec443bbb00c4ecb97c0a1c71920fde6e91f19 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 15 Sep 2023 13:05:52 -0700 Subject: [PATCH] wifi: brcmfmac: firmware: Annotate struct brcmf_fw_request with __counted_by MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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_fw_request. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Arend van Spriel Cc: Franky Lin Cc: Hante Meuleman Cc: Kalle Valo Cc: Matthias Brugger Cc: Hector Martin Cc: "Alvin Å ipraga" Cc: Hans de Goede 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 Reviewed-by: Gustavo A. R. Silva Reviewed-by: Matthias Brugger Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230915200552.never.642-kees@kernel.org --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h index 1266cbaee072..4002d326fd21 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h @@ -69,7 +69,7 @@ struct brcmf_fw_request { u16 bus_nr; u32 n_items; const char *board_types[BRCMF_FW_MAX_BOARD_TYPES]; - struct brcmf_fw_item items[]; + struct brcmf_fw_item items[] __counted_by(n_items); }; struct brcmf_fw_name { -- 2.20.1