--- kernel/bsd/hfs/hfs_vfsops.c	2018/04/24 18:26:05	1.1
+++ kernel/bsd/hfs/hfs_vfsops.c	2018/04/24 18:30:53	1.1.1.2
@@ -866,7 +866,7 @@ loop:;
         hp = VTOH(vp);
         if (H_FILEID(hp) == 3)
             btvp = vp;
-        if ((hp->h_meta->h_nodeflags & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 &&
+        if (hp && hp->h_meta && (hp->h_meta->h_nodeflags & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 &&
             vp->v_dirtyblkhd.lh_first == NULL) {
             simple_unlock(&vp->v_interlock);
             continue;