From: Kalle Valo <kvalo@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: johannes@sipsolutions.net, netdev@vger.kernel.org,
linux-wireless@vger.kernel.org, toke@toke.dk,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH net-next 2/8] wifi: ath9k: silence array-bounds warning on GCC 12
Date: Sat, 21 May 2022 09:58:28 +0300 [thread overview]
Message-ID: <87h75j1iej.fsf@kernel.org> (raw)
In-Reply-To: <20220520194320.2356236-3-kuba@kernel.org> (Jakub Kicinski's message of "Fri, 20 May 2022 12:43:14 -0700")
+ arnd, kees, lkml
Jakub Kicinski <kuba@kernel.org> writes:
> GCC 12 says:
>
> drivers/net/wireless/ath/ath9k/mac.c: In function ‘ath9k_hw_resettxqueue’:
> drivers/net/wireless/ath/ath9k/mac.c:373:22: warning: array subscript
> 32 is above array bounds of ‘struct ath9k_tx_queue_info[10]’
> [-Warray-bounds]
> 373 | qi = &ah->txq[q];
> | ~~~~~~~^~~
>
> I don't know where it got the 32 from, relegate the warning to W=1+.
>
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
> ---
> CC: toke@toke.dk
> CC: kvalo@kernel.org
> CC: linux-wireless@vger.kernel.org
> ---
> drivers/net/wireless/ath/ath9k/Makefile | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/net/wireless/ath/ath9k/Makefile b/drivers/net/wireless/ath/ath9k/Makefile
> index eff94bcd1f0a..9bdfcee2f448 100644
> --- a/drivers/net/wireless/ath/ath9k/Makefile
> +++ b/drivers/net/wireless/ath/ath9k/Makefile
> @@ -45,6 +45,11 @@ ath9k_hw-y:= \
> ar9003_eeprom.o \
> ar9003_paprd.o
>
> +# FIXME: temporarily silence -Warray-bounds on non W=1+ builds
> +ifndef KBUILD_EXTRA_WARN
> +CFLAGS_mac.o += -Wno-array-bounds
> +endif
There are now four wireless drivers which need this hack. Wouldn't it be
easier to add -Wno-array-bounds for GCC 12 globally instead of adding
the same hack to multiple drivers?
--
https://patchwork.kernel.org/project/linux-wireless/list/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
next prev parent reply other threads:[~2022-05-21 6:58 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-20 19:43 [PATCH net-next 0/8] Fix/silence GCC 12 warnings in drivers/net/wireless/ Jakub Kicinski
2022-05-20 19:43 ` [PATCH net-next 1/8] wifi: plfxlc: remove redundant NULL-check for GCC 12 Jakub Kicinski
2022-05-20 19:43 ` [PATCH net-next 2/8] wifi: ath9k: silence array-bounds warning on " Jakub Kicinski
2022-05-21 6:58 ` Kalle Valo [this message]
2022-05-21 17:53 ` Jakub Kicinski
2022-05-22 12:06 ` Kalle Valo
2022-05-23 19:31 ` Kees Cook
2022-05-20 19:43 ` [PATCH net-next 3/8] wifi: rtlwifi: remove always-true condition pointed out by " Jakub Kicinski
2022-05-23 2:35 ` Ping-Ke Shih
2022-05-23 15:57 ` Jakub Kicinski
2022-05-24 0:41 ` Ping-Ke Shih
2022-05-20 19:43 ` [PATCH net-next 4/8] wifi: ath6k: silence false positive -Wno-dangling-pointer warning on " Jakub Kicinski
2022-05-20 19:43 ` [PATCH net-next 5/8] wifi: iwlwifi: use unsigned to silence a GCC 12 warning Jakub Kicinski
2022-05-20 19:43 ` [PATCH net-next 6/8] wifi: brcmfmac: work around a GCC 12 -Warray-bounds warning Jakub Kicinski
2022-05-20 19:43 ` [PATCH net-next 7/8] wifi: libertas: silence " Jakub Kicinski
2022-05-21 22:03 ` Johannes Berg
2022-05-22 16:56 ` Jakub Kicinski
2022-05-20 19:43 ` [PATCH net-next 8/8] wifi: carl9170: " Jakub Kicinski
2022-05-20 19:58 ` Christian Lamparter
2022-05-22 12:19 ` [PATCH net-next 0/8] Fix/silence GCC 12 warnings in drivers/net/wireless/ Kalle Valo
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