linux-kernel - [PATCH] w1: use kfree_sensitive() instead of kfree()

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Date:   Wed, 20 Oct 2021 00:23:21 -0700
From:   Qing Wang <wangqing@...o.com>
To:     Evgeniy Polyakov <zbr@...emap.net>, linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] w1: use kfree_sensitive() instead of kfree()

From: Wang Qing <wangqing@...o.com>

use kfree_sensitive() derictly instead of memset zero and kfree().

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 drivers/w1/w1.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index f2ae2e5..a0a6c3c
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -73,8 +73,7 @@ static void w1_master_release(struct device *dev)
 	struct w1_master *md = dev_to_w1_master(dev);
 
 	dev_dbg(dev, "%s: Releasing %s.\n", __func__, md->name);
-	memset(md, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
-	kfree(md);
+	kfree_sensitive(md);
 }
 
 static void w1_slave_release(struct device *dev)
-- 
2.7.4