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Message-ID: <546BB427.2050101@users.sourceforge.net>
Date: Tue, 18 Nov 2014 22:03:35 +0100
From: SF Markus Elfring <elfring@...rs.sourceforge.net>
To: David Howells <dhowells@...hat.com>,
James Morris <james.l.morris@...cle.com>,
"Serge E. Hallyn" <serge@...lyn.com>, keyrings@...ux-nfs.org,
linux-security-module@...r.kernel.org
CC: LKML <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org, Coccinelle <cocci@...teme.lip6.fr>
Subject: [PATCH 1/1] keys: Deletion of an unnecessary check before the function
call "key_put"
From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 18 Nov 2014 21:57:14 +0100
The key_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
security/keys/process_keys.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 0cf8a13..ce00e11 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -242,8 +242,7 @@ int install_session_keyring_to_cred(struct cred *cred, struct key *keyring)
old = cred->session_keyring;
rcu_assign_pointer(cred->session_keyring, keyring);
- if (old)
- key_put(old);
+ key_put(old);
return 0;
}
--
2.1.3
--
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