linux-kernel - Re: [PATCH 05/10] mm: check kmalloc() return value

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Message-ID: <AANLkTimhz5D4jthc8__HvHekznWSftXqqDihzjKbW9=P@mail.gmail.com>
Date:	Wed, 28 Jul 2010 19:53:06 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Kulikov Vasiliy <segooon@...il.com>
Cc:	kernel-janitors@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Nick Piggin <npiggin@...e.de>,
	Jan Beulich <jbeulich@...ell.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 05/10] mm: check kmalloc() return value

On Wed, Jul 28, 2010 at 7:40 PM, Kulikov Vasiliy <segooon@...il.com> wrote:
> kmalloc() may fail, if so return -ENOMEM.
>
> Signed-off-by: Kulikov Vasiliy <segooon@...il.com>

Acked-by: Pekka Enberg <penberg@...helsinki.fi>

> ---
>  mm/vmalloc.c |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> index b7e314b..f63684a 100644
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -2437,8 +2437,11 @@ static int vmalloc_open(struct inode *inode, struct file *file)
>        unsigned int *ptr = NULL;
>        int ret;
>
> -       if (NUMA_BUILD)
> +       if (NUMA_BUILD) {
>                ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL);
> +               if (ptr == NULL)
> +                       return -ENOMEM;
> +       }
>        ret = seq_open(file, &vmalloc_op);
>        if (!ret) {
>                struct seq_file *m = file->private_data;
> --
> 1.7.0.4
>
> --
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