linux-kernel - Re: [PATCH] nilfs2: avoid overflowing segment numbers in nilfs_ioctl_clean

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Message-Id: <20120203203605.da735392.akpm@linux-foundation.org>
Date:	Fri, 3 Feb 2012 20:36:05 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
Cc:	xi.wang@...il.com, linux-nilfs@...r.kernel.org,
	linux-kernel@...r.kernel.org, haogangchen@...il.com
Subject: Re: [PATCH] nilfs2: avoid overflowing segment numbers in
 nilfs_ioctl_clean_segments()

On Sat, 04 Feb 2012 12:13:02 +0900 (JST) Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp> wrote:

> On Fri,  3 Feb 2012 10:26:07 -0500, Xi Wang wrote:
> > nsegs is read from userspace.  Limit its value and avoid overflowing
> > nsegs * sizeof(__u64) in the subsequent call to memdup_user().
> > 
> > This patch complements 481fe17e973fb97aa3edf17c69557afe88d8334f.
> > 
> > Signed-off-by: Xi Wang <xi.wang@...il.com>
> > Cc: Haogang Chen <haogangchen@...il.com>
> > Cc: Andrew Morton <akpm@...ux-foundation.org>
> > ---
> >  fs/nilfs2/ioctl.c |    2 ++
> >  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> Acked-by: Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
> 
> 
> Thank you for posting this fix.
> 
> Andrew, could you send this uptream in this cycle ?

I sure can.
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