linux-hardening - [PATCH][next] atmel: Fix atmel_private

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Date:   Mon, 17 Oct 2022 19:37:59 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Simon Kelley <simon@...kelleys.org.uk>
Cc:     Kees Cook <keescook@...omium.org>, Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: [PATCH][next] atmel: Fix atmel_private_handler array size

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@...kelleys.org.uk>
Cc: Kalle Valo <kvalo@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: linux-wireless@...r.kernel.org
Cc: netdev@...r.kernel.org
Fixes: 8af9d4068e86 ("wifi: atmel: Avoid clashing function prototypes")
Signed-off-by: Kees Cook <keescook@...omium.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