linux-kernel - [PATCH 3/3] net-PPP: Delete an unnecessary assignment

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

Message-ID: <547B4A35.7000500@users.sourceforge.net>
Date:	Sun, 30 Nov 2014 17:47:49 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Paul Mackerras <paulus@...ba.org>, linux-ppp@...r.kernel.org,
	netdev@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 3/3] net-PPP: Delete an unnecessary assignment

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 30 Nov 2014 17:17:36 +0100

The data structure element "arc4" was assigned a null pointer by the
mppe_alloc() function if a previous function call "crypto_alloc_blkcipher"
failed. This assignment became unnecessary with previous source
code adjustments.
Let us delete it from the affected implementation because the element "arc4"
will not be accessible outside the function after the detected
allocation failure.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/net/ppp/ppp_mppe.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c
index 962c1a0..d913bc9 100644
--- a/drivers/net/ppp/ppp_mppe.c
+++ b/drivers/net/ppp/ppp_mppe.c
@@ -205,10 +205,8 @@ static void *mppe_alloc(unsigned char *options, int optlen)
 
 
 	state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(state->arc4)) {
-		state->arc4 = NULL;
+	if (IS_ERR(state->arc4))
 		goto out_free;
-	}
 
 	state->sha1 = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(state->sha1)) {
-- 
2.1.3

--
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/