linux-kernel - [PATCH 5.1 17/55] dm init: fix incorrect uses of kstrndup()

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Date:   Tue,  2 Jul 2019 10:01:25 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Gen Zhang <blackgod016574@...il.com>,
        Mike Snitzer <snitzer@...hat.com>
Subject: [PATCH 5.1 17/55] dm init: fix incorrect uses of kstrndup()

From: Gen Zhang <blackgod016574@...il.com>

commit dec7e6494e1aea6bf676223da3429cd17ce0af79 upstream.

Fix 2 kstrndup() calls with incorrect argument order.

Fixes: 6bbc923dfcf5 ("dm: add support to directly boot to a mapped device")
Cc: stable@...r.kernel.org # v5.1
Signed-off-by: Gen Zhang <blackgod016574@...il.com>
Signed-off-by: Mike Snitzer <snitzer@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/md/dm-init.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/md/dm-init.c
+++ b/drivers/md/dm-init.c
@@ -140,8 +140,8 @@ static char __init *dm_parse_table_entry
 		return ERR_PTR(-EINVAL);
 	}
 	/* target_args */
-	dev->target_args_array[n] = kstrndup(field[3], GFP_KERNEL,
-					     DM_MAX_STR_SIZE);
+	dev->target_args_array[n] = kstrndup(field[3], DM_MAX_STR_SIZE,
+					     GFP_KERNEL);
 	if (!dev->target_args_array[n])
 		return ERR_PTR(-ENOMEM);
 
@@ -275,7 +275,7 @@ static int __init dm_init_init(void)
 		DMERR("Argument is too big. Limit is %d\n", DM_MAX_STR_SIZE);
 		return -EINVAL;
 	}
-	str = kstrndup(create, GFP_KERNEL, DM_MAX_STR_SIZE);
+	str = kstrndup(create, DM_MAX_STR_SIZE, GFP_KERNEL);
 	if (!str)
 		return -ENOMEM;