From: Dave Chinner <david@fromorbit.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: linux-xfs@vger.kernel.org, Eric Sandeen <sandeen@redhat.com>
Subject: Re: [PATCH] xfs: initialize the shortform attr header padding entry
Date: Wed, 26 Aug 2020 08:42:59 +1000 [thread overview]
Message-ID: <20200825224259.GT12131@dread.disaster.area> (raw)
In-Reply-To: <20200825202853.GE6096@magnolia>
On Tue, Aug 25, 2020 at 01:28:53PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
>
> Don't leak kernel memory contents into the shortform attr fork.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
> fs/xfs/libxfs/xfs_attr_leaf.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
> index 8623c815164a..e1a3d225a77d 100644
> --- a/fs/xfs/libxfs/xfs_attr_leaf.c
> +++ b/fs/xfs/libxfs/xfs_attr_leaf.c
> @@ -656,6 +656,7 @@ xfs_attr_shortform_create(
> hdr = (xfs_attr_sf_hdr_t *)ifp->if_u1.if_data;
> hdr->count = 0;
> hdr->totsize = cpu_to_be16(sizeof(*hdr));
> + hdr->padding = 0;
memset(hdr, 0, sizeof(*hdr)), please.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
prev parent reply other threads:[~2020-08-25 22:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 20:28 [PATCH] xfs: initialize the shortform attr header padding entry Darrick J. Wong
2020-08-25 20:48 ` Eric Sandeen
2020-08-27 8:14 ` Christoph Hellwig
2020-08-25 22:42 ` Dave Chinner [this message]
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