linux-kernel - Re: [PATCH 04/46] selinux: Use kmalloc_array() in hashtab

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Message-ID: <CAHC9VhRq053_HBeUnSLE6XutcrZDTj_YJpzTh9U0hW6jkExCJQ@mail.gmail.com>
Date:   Thu, 23 Mar 2017 16:32:02 -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 04/46] selinux: Use kmalloc_array() in hashtab_create()

On Sun, Jan 15, 2017 at 10:01 AM, SF Markus Elfring
<elfring@...rs.sourceforge.net> wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sat, 14 Jan 2017 12:06:13 +0100
>
> A multiplication for the size determination of a memory allocation
> indicated that an array data structure should be processed.
> Thus use the corresponding function "kmalloc_array".
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  security/selinux/ss/hashtab.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Merged, thanks.

> diff --git a/security/selinux/ss/hashtab.c b/security/selinux/ss/hashtab.c
> index 2cc496149842..dc99fff64ecb 100644
> --- a/security/selinux/ss/hashtab.c
> +++ b/security/selinux/ss/hashtab.c
> @@ -24,7 +24,7 @@ struct hashtab *hashtab_create(u32 (*hash_value)(struct hashtab *h, const void *
>         p->nel = 0;
>         p->hash_value = hash_value;
>         p->keycmp = keycmp;
> -       p->htable = kmalloc(sizeof(*(p->htable)) * size, GFP_KERNEL);
> +       p->htable = kmalloc_array(size, sizeof(*p->htable), GFP_KERNEL);
>         if (p->htable == NULL) {
>                 kfree(p);
>                 return NULL;
> --
> 2.11.0
>



-- 
paul moore
www.paul-moore.com