commit 1faaeeacae5c868e72e327e821ba118da7cbd6cd
Author: Bob Peterson <bob@ganesha.peterson>
Date:   Thu Jan 21 17:15:24 2010 -0600

    libgfs2: dir_split_leaf needs to zero out the new leaf
    
    The dir_split_leaf function was not clearing out the new leaf
    block it had allocated, so there was likely to be trash left
    on the block.  Granted, this is pretty rare, but I actually
    saw it in a situation where lots of orphaned dinodes were
    tossed into lost+found.
    
    rhbz#455300

diff --git a/gfs2/libgfs2/fs_ops.c b/gfs2/libgfs2/fs_ops.c
index e9c7626..f670aa5 100644
--- a/gfs2/libgfs2/fs_ops.c
+++ b/gfs2/libgfs2/fs_ops.c
@@ -853,6 +853,8 @@ static void dir_split_leaf(struct gfs2_inode *dip, uint32_t lindex,
 		mh.mh_type = GFS2_METATYPE_LF;
 		mh.mh_format = GFS2_FORMAT_LF;
 		gfs2_meta_header_out(&mh, nbh);
+		buffer_clear_tail(dip->i_sbd, nbh,
+				  sizeof(struct gfs2_meta_header));
 	}
 
 	nleaf = (struct gfs2_leaf *)nbh->b_data;