From: Minchan Kim <minchan@kernel.org>
To: Sasha Levin <levinsasha928@gmail.com>
Cc: akpm@linux-foundation.org, rohit.seth@intel.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: fix devision by 0 in percpu_pagelist_fraction
Date: Mon, 30 Apr 2012 11:30:23 +0900 [thread overview]
Message-ID: <4F9DF93F.30403@kernel.org> (raw)
In-Reply-To: <1335623131-15728-1-git-send-email-levinsasha928@gmail.com>
On 04/28/2012 11:25 PM, Sasha Levin wrote:
> percpu_pagelist_fraction_sysctl_handler() has only considered -EINVAL as a possible error
> from proc_dointvec_minmax(). If any other error is returned, it would proceed to divide by
> zero since percpu_pagelist_fraction wasn't getting initialized at any point. For example,
> writing 0 bytes into the proc file would trigger the issue.
>
> Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
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prev parent reply other threads:[~2012-04-30 2:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-28 14:25 [PATCH] mm: fix devision by 0 in percpu_pagelist_fraction Sasha Levin
2012-04-30 2:30 ` Minchan Kim [this message]
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