linux-kernel - Re: [PATCH] proc: Remove cast from memory allocation

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Date:   Tue, 25 Jul 2017 14:06:34 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Tobin C. Harding" <me@...in.cc>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Seth Forshee <seth.forshee@...onical.com>,
        Alexey Dobriyan <adobriyan@...il.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] proc: Remove cast from memory allocation

On Tue, Feb 21, 2017 at 10:42 PM, Tobin C. Harding <me@...in.cc> wrote:
> Coccinelle emits WARNING: casting value returned by memory allocation
> function to (struct proc_inode *) is useless.
>
> Remove unnecessary cast.
>
> Signed-off-by: Tobin C. Harding <me@...in.cc>

Acked-by: Kees Cook <keescook@...omium.org>

-Kees

> ---
>  fs/proc/inode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/proc/inode.c b/fs/proc/inode.c
> index 842a5ff..1eb2326 100644
> --- a/fs/proc/inode.c
> +++ b/fs/proc/inode.c
> @@ -57,7 +57,7 @@ static struct inode *proc_alloc_inode(struct super_block *sb)
>         struct proc_inode *ei;
>         struct inode *inode;
>
> -       ei = (struct proc_inode *)kmem_cache_alloc(proc_inode_cachep, GFP_KERNEL);
> +       ei = kmem_cache_alloc(proc_inode_cachep, GFP_KERNEL);
>         if (!ei)
>                 return NULL;
>         ei->pid = NULL;
> --
> 2.7.4
>



-- 
Kees Cook
Pixel Security