linux-hardening - [PATCH -next] mmc: sdhci-cadence: Annotate struct sdhci_cdns_phy_param with __counted

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Message-ID: <20240904014636.2033138-1-lihongbo22@huawei.com>
Date: Wed, 4 Sep 2024 09:46:36 +0800
From: Hongbo Li <lihongbo22@...wei.com>
To: <adrian.hunter@...el.com>, <ulf.hansson@...aro.org>, <kees@...nel.org>,
	<gustavoars@...nel.org>
CC: <linux-mmc@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
	<lihongbo22@...wei.com>
Subject: [PATCH -next] mmc: sdhci-cadence: Annotate struct sdhci_cdns_phy_param with __counted_by()

Add the __counted_by compiler attribute to the flexible array member
entries to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

Signed-off-by: Hongbo Li <lihongbo22@...wei.com>
---
 drivers/mmc/host/sdhci-cadence.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index be1505e8c536..2690bcaeaad5 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -73,7 +73,7 @@ struct sdhci_cdns_priv {
 	void (*priv_writel)(struct sdhci_cdns_priv *priv, u32 val, void __iomem *reg);
 	struct reset_control *rst_hw;
 	unsigned int nr_phy_params;
-	struct sdhci_cdns_phy_param phy_params[];
+	struct sdhci_cdns_phy_param phy_params[] __counted_by(count);
 };
 
 struct sdhci_cdns_phy_cfg {
-- 
2.34.1