[PATCH] xfs_repair: check for null single-block dir buffer pointer in phase6

[Christoph Hellwig]

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.