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Message-Id: <20220128080206.1211452-1-chi.minghao@zte.com.cn>
Date: Fri, 28 Jan 2022 08:02:06 +0000
From: cgel.zte@...il.com
To: luciano.coelho@...el.com
Cc: kvalo@...nel.org, davem@...emloft.net, kuba@...nel.org,
trix@...hat.com, johannes.berg@...el.com,
linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, Minghao Chi <chi.minghao@....com.cn>,
Zeal Robot <zealci@....com.cn>
Subject: [PATCH] dvm: use struct_size over open coded arithmetic
From: Minghao Chi (CGEL ZTE) <chi.minghao@....com.cn>
Replace zero-length array with flexible-array member and make use
of the struct_size() helper in kmalloc(). For example:
struct iwl_wipan_noa_data {
...
u8 data[];
};
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.
Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@....com.cn>
---
drivers/net/wireless/intel/iwlwifi/dvm/rx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/rx.c b/drivers/net/wireless/intel/iwlwifi/dvm/rx.c
index db0c41bbeb0e..d0d842b25b86 100644
--- a/drivers/net/wireless/intel/iwlwifi/dvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/dvm/rx.c
@@ -915,7 +915,7 @@ static void iwlagn_rx_noa_notification(struct iwl_priv *priv,
len += 1 + 2;
copylen += 1 + 2;
- new_data = kmalloc(sizeof(*new_data) + len, GFP_ATOMIC);
+ new_data = kmalloc(struct_size(*new_data, data, len), GFP_ATOMIC);
if (new_data) {
new_data->length = len;
new_data->data[0] = WLAN_EID_VENDOR_SPECIFIC;
--
2.25.1
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