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

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Message-ID: <CAHC9VhTxotWNL8XaOGUS5E8xvBFLaJp7Gi2xfvzu92K7gvmh=w@mail.gmail.com>
Date:   Wed, 29 Mar 2017 11:32:11 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
        Eric Paris <eparis@...isplace.org>,
        James Morris <james.l.morris@...cle.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        William Roberts <william.c.roberts@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 36/46] selinux: Move an assignment for the variable "rc"
 in mls_read_range_helper()

On Sun, Jan 15, 2017 at 10:36 AM, SF Markus Elfring
<elfring@...rs.sourceforge.net> wrote:
> 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(-)

Dropped as previously discussed.

> 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
>



-- 
paul moore
www.paul-moore.com