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Date: Sat, 25 Jul 2009 11:02:56 -0400
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] xfs_repair: check for null single-block dir buffer
	pointer in phase6
Message-ID: <20090725150256.GA12148@infradead.org>
References: <4A69C660.9000604@sandeen.net>
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To: Eric Sandeen <sandeen@sandeen.net>
Cc: xfs-oss <xfs@oss.sgi.com>

On Fri, Jul 24, 2009 at 09:34:08AM -0500, Eric Sandeen wrote:
> @@ -2524,7 +2525,7 @@ longform_dir2_entry_check(xfs_mount_t	*mp,
>  
>  	if (!dotdot_update) {
>  		/* check btree and freespace */
> -		if (isblock) {
> +		if (isblock && bplist[0]) {
>  			xfs_dir2_block_tail_t	*btp;
>  			xfs_dir2_leaf_entry_t	*blp;

This doesn't look quite correct to me.  Now we falls through to the
final else statement when bplist[0] is zeroed.

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