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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Kalle Valo <kvalo@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>
Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-hardening@vger.kernel.org
Subject: [PATCH][next] ath10k: Replace zero-length array with flexible-array member
Date: Wed, 16 Feb 2022 13:48:07 -0600	[thread overview]
Message-ID: <20220216194807.GA904008@embeddedor> (raw)

There is a regular need in the kernel to provide a way to declare
having a dynamically sized set of trailing elements in a structure.
Kernel code should always use “flexible array members”[1] for these
cases. The older style of one-element or zero-length arrays should
no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/wireless/ath/ath10k/swap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/swap.h b/drivers/net/wireless/ath/ath10k/swap.h
index 25e0ad36ddb1..b4733b5ded34 100644
--- a/drivers/net/wireless/ath/ath10k/swap.h
+++ b/drivers/net/wireless/ath/ath10k/swap.h
@@ -17,7 +17,7 @@ struct ath10k_fw_file;
 struct ath10k_swap_code_seg_tlv {
 	__le32 address;
 	__le32 length;
-	u8 data[0];
+	u8 data[];
 } __packed;
 
 struct ath10k_swap_code_seg_tail {
-- 
2.27.0


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WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Kalle Valo <kvalo@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>
Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-hardening@vger.kernel.org
Subject: [PATCH][next] ath10k: Replace zero-length array with flexible-array member
Date: Wed, 16 Feb 2022 13:48:07 -0600	[thread overview]
Message-ID: <20220216194807.GA904008@embeddedor> (raw)

There is a regular need in the kernel to provide a way to declare
having a dynamically sized set of trailing elements in a structure.
Kernel code should always use “flexible array members”[1] for these
cases. The older style of one-element or zero-length arrays should
no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/wireless/ath/ath10k/swap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/swap.h b/drivers/net/wireless/ath/ath10k/swap.h
index 25e0ad36ddb1..b4733b5ded34 100644
--- a/drivers/net/wireless/ath/ath10k/swap.h
+++ b/drivers/net/wireless/ath/ath10k/swap.h
@@ -17,7 +17,7 @@ struct ath10k_fw_file;
 struct ath10k_swap_code_seg_tlv {
 	__le32 address;
 	__le32 length;
-	u8 data[0];
+	u8 data[];
 } __packed;
 
 struct ath10k_swap_code_seg_tail {
-- 
2.27.0


             reply	other threads:[~2022-02-16 19:41 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-16 19:48 Gustavo A. R. Silva [this message]
2022-02-16 19:48 ` [PATCH][next] ath10k: Replace zero-length array with flexible-array member Gustavo A. R. Silva
2022-02-16 20:33 ` Kees Cook
2022-02-16 20:33   ` Kees Cook
2022-02-21 10:24 ` Kalle Valo
2022-02-21 10:24   ` Kalle Valo

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