linux-kernel - Re: [PATCH 02/34] cris: fix potential NULL-pointer dereference

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Message-ID: <20131011095813.GH11028@axis.com>
Date:	Fri, 11 Oct 2013 11:58:13 +0200
From:	Jesper Nilsson <jesper.nilsson@...s.com>
To:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jespern@...s.com>
Subject: Re: [PATCH 02/34] cris: fix potential NULL-pointer dereference

On Thu, Oct 10, 2013 at 08:05:27PM +0200, Kirill A. Shutemov wrote:
> Add missing check for memory allocation fail.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Cc: Mikael Starvik <starvik@...s.com>

Acked-by: Jesper Nilsson <jesper.nilsson@...s.com>

> ---
>  arch/cris/include/asm/pgalloc.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/cris/include/asm/pgalloc.h b/arch/cris/include/asm/pgalloc.h
> index 6da975db11..d9504d38c2 100644
> --- a/arch/cris/include/asm/pgalloc.h
> +++ b/arch/cris/include/asm/pgalloc.h
> @@ -32,6 +32,8 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addres
>  {
>  	struct page *pte;
>  	pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
> +	if (!pte)
> +		return NULL;
>  	pgtable_page_ctor(pte);
>  	return pte;
>  }
> -- 
> 1.8.4.rc3

/^JN - Jesper Nilsson
-- 
               Jesper Nilsson -- jesper.nilsson@...s.com
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