linux-ext4 - Re: [PATCH] ext4: Make ext4_ext_convert_to_initialized() return proper number of blocks

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Message-ID: <20141030144534.GC31927@thunk.org>
Date:	Thu, 30 Oct 2014 10:45:34 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext4: Make ext4_ext_convert_to_initialized() return
 proper number of blocks

On Wed, Oct 22, 2014 at 10:29:10AM +0200, Jan Kara wrote:
> ext4_ext_convert_to_initialized() can return more blocks than are
> actually allocated from map->m_lblk in case where initial part of the
> on-disk extent is zeroed out. Luckily this doesn't have serious
> consequences because the caller currently uses the return value
> only to unmap metadata buffers. Anyway this is a data
> corruption/exposure problem waiting to happen so fix it.
> 
> Coverity-id: 1226848
> Signed-off-by: Jan Kara <jack@...e.cz>

Applied, thanks.

					- Ted
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