netdev - Re: [PATCH nf-next v2 2/4] ipvs: Consistently use array_size() in ip_vs_conn

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: <20230411113450.ky4jp6jsptvlzrtx@soft-dev3-1>
Date:   Tue, 11 Apr 2023 13:34:50 +0200
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     Simon Horman <horms@...nel.org>
CC:     Julian Anastasov <ja@....bg>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>, <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, <lvs-devel@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <netfilter-devel@...r.kernel.org>,
        <coreteam@...filter.org>
Subject: Re: [PATCH nf-next v2 2/4] ipvs: Consistently use array_size() in
 ip_vs_conn_init()

The 04/11/2023 09:10, Simon Horman wrote:
> 
> Consistently use array_size() to calculate the size of ip_vs_conn_tab
> in bytes.
> 
> Flagged by Coccinelle:
>  WARNING: array_size is already used (line 1498) to compute the same size
> 
> No functional change intended.
> Compile tested only.

Reviewed-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

> 
> Signed-off-by: Simon Horman <horms@...nel.org>
> ---
> v2
> * Retain division by 1024, which was lost in v1
> ---
>  net/netfilter/ipvs/ip_vs_conn.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
> index 13534e02346c..84d273a84dc8 100644
> --- a/net/netfilter/ipvs/ip_vs_conn.c
> +++ b/net/netfilter/ipvs/ip_vs_conn.c
> @@ -1481,6 +1481,7 @@ void __net_exit ip_vs_conn_net_cleanup(struct netns_ipvs *ipvs)
> 
>  int __init ip_vs_conn_init(void)
>  {
> +       size_t tab_array_size;
>         int idx;
> 
>         /* Compute size and mask */
> @@ -1494,8 +1495,9 @@ int __init ip_vs_conn_init(void)
>         /*
>          * Allocate the connection hash table and initialize its list heads
>          */
> -       ip_vs_conn_tab = vmalloc(array_size(ip_vs_conn_tab_size,
> -                                           sizeof(*ip_vs_conn_tab)));
> +       tab_array_size = array_size(ip_vs_conn_tab_size,
> +                                   sizeof(*ip_vs_conn_tab));
> +       ip_vs_conn_tab = vmalloc(tab_array_size);
>         if (!ip_vs_conn_tab)
>                 return -ENOMEM;
> 
> @@ -1508,10 +1510,8 @@ int __init ip_vs_conn_init(void)
>                 return -ENOMEM;
>         }
> 
> -       pr_info("Connection hash table configured "
> -               "(size=%d, memory=%ldKbytes)\n",
> -               ip_vs_conn_tab_size,
> -               (long)(ip_vs_conn_tab_size*sizeof(*ip_vs_conn_tab))/1024);
> +       pr_info("Connection hash table configured (size=%d, memory=%zdKbytes)\n",
> +               ip_vs_conn_tab_size / 1024, tab_array_size);
>         IP_VS_DBG(0, "Each connection entry needs %zd bytes at least\n",
>                   sizeof(struct ip_vs_conn));
> 
> 
> --
> 2.30.2
> 

-- 
/Horatiu