linux-ext4 - Re: [PATCH 2/4] xfs: Fix possible use-after-free with AIO

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Message-ID: <20130130005656.GM27055@sgi.com>
Date:	Tue, 29 Jan 2013 18:56:56 -0600
From:	Ben Myers <bpm@....com>
To:	Jan Kara <jack@...e.cz>
Cc:	Al Viro <viro@...IV.linux.org.uk>, stable@...r.kernel.org,
	xfs@....sgi.com, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org, ocfs2-devel@....oracle.com
Subject: Re: [PATCH 2/4] xfs: Fix possible use-after-free with AIO

Hi Jan,

On Wed, Jan 30, 2013 at 12:27:59AM +0100, Jan Kara wrote:
> Running AIO is pinning inode in memory using file reference. Once AIO
> is completed using aio_complete(), file reference is put and inode can
> be freed from memory. So we have to be sure that calling aio_complete()
> is the last thing we do with the inode.
> 
> CC: xfs@....sgi.com
> CC: Ben Myers <bpm@....com>
> CC: stable@...r.kernel.org
> Reviewed-by: Ben Myers <bpm@....com>
> Acked-by: Jeff Moyer <jmoyer@...hat.com>
> Signed-off-by: Jan Kara <jack@...e.cz>

We picked this up in the xfs tree.  Sorry to keep you hanging.

Regards,
	Ben
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