linux-kernel - [PATCH 36/46] selinux: Move an assignment for the variable "rc" in mls_read_range

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Date:   Sun, 15 Jan 2017 16:36:01 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
        Eric Paris <eparis@...isplace.org>,
        James Morris <james.l.morris@...cle.com>,
        Paul Moore <paul@...l-moore.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        William Roberts <william.c.roberts@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 36/46] selinux: Move an assignment for the variable "rc" in
 mls_read_range_helper()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 15 Jan 2017 11:22:23 +0100

A local variable was set to an error code in one case before a concrete
error situation was detected. Thus move the corresponding assignment into
an if branch to indicate a software failure there.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 security/selinux/ss/policydb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 9b595f2e0d9f..7cf635c650dc 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -996,10 +996,10 @@ static int mls_read_range_helper(struct mls_range *r, void *fp)
 	if (rc)
 		goto out;
 
-	rc = -EINVAL;
 	items = le32_to_cpu(buf[0]);
 	if (items > ARRAY_SIZE(buf)) {
 		printk(KERN_ERR "SELinux: mls:  range overflow\n");
+		rc = -EINVAL;
 		goto out;
 	}
 
-- 
2.11.0