[dm-devel] [patch 1/1] md: use kzfree()
akpm at linux-foundation.org
akpm at linux-foundation.org
Wed Mar 4 20:04:18 UTC 2009
From: Johannes Weiner <hannes at cmpxchg.org>
Use kzfree() instead of memset() + kfree().
Signed-off-by: Johannes Weiner <hannes at cmpxchg.org>
Reviewed-by: Pekka Enberg <penberg at cs.helsinki.fi>
Cc: Alasdair Kergon <dm-devel at redhat.com>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
---
drivers/md/dm-crypt.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff -puN drivers/md/dm-crypt.c~md-use-kzfree drivers/md/dm-crypt.c
--- a/drivers/md/dm-crypt.c~md-use-kzfree
+++ a/drivers/md/dm-crypt.c
@@ -1137,8 +1137,7 @@ bad_ivmode:
crypto_free_ablkcipher(tfm);
bad_cipher:
/* Must zero key material before freeing */
- memset(cc, 0, sizeof(*cc) + cc->key_size * sizeof(u8));
- kfree(cc);
+ kzfree(cc);
return -EINVAL;
}
@@ -1164,8 +1163,7 @@ static void crypt_dtr(struct dm_target *
dm_put_device(ti, cc->dev);
/* Must zero key material before freeing */
- memset(cc, 0, sizeof(*cc) + cc->key_size * sizeof(u8));
- kfree(cc);
+ kzfree(cc);
}
static int crypt_map(struct dm_target *ti, struct bio *bio,
_
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