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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	Jose Abreu <joabreu@synopsys.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH][next] net: stmmac: selftests: Use struct_size() helper in kzalloc()
Date: Tue, 16 Jun 2020 18:03:28 -0500	[thread overview]
Message-ID: <20200616230328.GA23281@embeddedor> (raw)

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index e6696495f126..e113b1376fdd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -1094,7 +1094,7 @@ static int stmmac_test_rxp(struct stmmac_priv *priv)
 	if (!priv->dma_cap.frpsel)
 		return -EOPNOTSUPP;
 
-	sel = kzalloc(sizeof(*sel) + nk * sizeof(struct tc_u32_key), GFP_KERNEL);
+	sel = kzalloc(struct_size(sel, keys, nk), GFP_KERNEL);
 	if (!sel)
 		return -ENOMEM;
 
-- 
2.27.0


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WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	Jose Abreu <joabreu@synopsys.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH][next] net: stmmac: selftests: Use struct_size() helper in kzalloc()
Date: Tue, 16 Jun 2020 18:03:28 -0500	[thread overview]
Message-ID: <20200616230328.GA23281@embeddedor> (raw)

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index e6696495f126..e113b1376fdd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -1094,7 +1094,7 @@ static int stmmac_test_rxp(struct stmmac_priv *priv)
 	if (!priv->dma_cap.frpsel)
 		return -EOPNOTSUPP;
 
-	sel = kzalloc(sizeof(*sel) + nk * sizeof(struct tc_u32_key), GFP_KERNEL);
+	sel = kzalloc(struct_size(sel, keys, nk), GFP_KERNEL);
 	if (!sel)
 		return -ENOMEM;
 
-- 
2.27.0


             reply	other threads:[~2020-06-16 22:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-16 23:03 Gustavo A. R. Silva [this message]
2020-06-16 23:03 ` [PATCH][next] net: stmmac: selftests: Use struct_size() helper in kzalloc() Gustavo A. R. Silva
2020-06-19  3:19 ` David Miller
2020-06-19  3:19   ` David Miller

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