linux-kernel - [PATCH] ext4 crypto: remove unneeded assignation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed,  8 Jul 2015 21:51:15 +0200
From:	Laurent Navet <laurent.navet@...il.com>
To:	tytso@....edu, adilger.kernel@...ger.ca
Cc:	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	Laurent Navet <laurent.navet@...il.com>
Subject: [PATCH] ext4 crypto: remove unneeded assignation

Return value of ext4_derive_key_aes() is stored but never used before
being overwritten.
Also fix coverity CID 1309760.

Signed-off-by: Laurent Navet <laurent.navet@...il.com>
---
 fs/ext4/crypto_key.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/crypto_key.c b/fs/ext4/crypto_key.c
index 442d24e..92f9172 100644
--- a/fs/ext4/crypto_key.c
+++ b/fs/ext4/crypto_key.c
@@ -218,7 +218,7 @@ retry:
 	BUILD_BUG_ON(EXT4_AES_128_ECB_KEY_SIZE !=
 		     EXT4_KEY_DERIVATION_NONCE_SIZE);
 	BUG_ON(master_key->size != EXT4_AES_256_XTS_KEY_SIZE);
-	res = ext4_derive_key_aes(ctx.nonce, master_key->raw,
+	ext4_derive_key_aes(ctx.nonce, master_key->raw,
 				  raw_key);
 got_key:
 	ctfm = crypto_alloc_ablkcipher(cipher_str, 0, 0);
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/