Fix the atmel_private_handler to correctly sized (1 element) again. (I
should have checked the data segment for differences.) This had no
behavioral impact (no private callbacks), but it made a very large
zero-filled array.

Cc: Simon Kelley <simon@thekelleys.org.uk>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Fixes: 8af9d4068e86 ("wifi: atmel: Avoid clashing function prototypes")
Signed-off-by: Kees Cook <keescook@chromium.org>
---
 drivers/net/wireless/atmel/atmel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/atmel/atmel.c b/drivers/net/wireless/atmel/atmel.c
index ed430b91e2aa..7c2d1c588156 100644
--- a/drivers/net/wireless/atmel/atmel.c
+++ b/drivers/net/wireless/atmel/atmel.c
@@ -2570,7 +2570,7 @@ static const iw_handler atmel_handler[] =
 
 static const iw_handler atmel_private_handler[] =
 {
-	IW_HANDLER(SIOCIWFIRSTPRIV,	NULL),
+	NULL,				/* SIOCIWFIRSTPRIV */
 };
 
 struct atmel_priv_ioctl {
-- 
2.34.1

Kees Cook <keescook@chromium.org> wrote:

> Fix the atmel_private_handler to correctly sized (1 element) again. (I
> should have checked the data segment for differences.) This had no
> behavioral impact (no private callbacks), but it made a very large
> zero-filled array.
> 
> Cc: Simon Kelley <simon@thekelleys.org.uk>
> Cc: Kalle Valo <kvalo@kernel.org>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Eric Dumazet <edumazet@google.com>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Paolo Abeni <pabeni@redhat.com>
> Cc: linux-wireless@vger.kernel.org
> Cc: netdev@vger.kernel.org
> Fixes: 8af9d4068e86 ("wifi: atmel: Avoid clashing function prototypes")
> Signed-off-by: Kees Cook <keescook@chromium.org>

Patch applied to wireless-next.git, thanks.

8b860466b137 wifi: atmel: Fix atmel_private_handler array size

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20221018023732.never.700-kees@kernel.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches