--- sys/ufs/ffs/ffs_alloc.c.orig	Wed May 19 22:07:15 2004
+++ sys/ufs/ffs/ffs_alloc.c	Tue Jan 15 18:52:01 2008
@@ -1287,8 +1287,11 @@
 	 */
 	blksfree = cg_blksfree(cgp);
 	for (i = 1; i <= len; i++)
-		if (!ffs_isblock(fs, blksfree, got - run + i))
-			panic("ffs_clusteralloc: map mismatch");
+		if (!ffs_isblock(fs, blksfree, got - run + i)) {
+			log(LOG_CRIT,"ffs_clusteralloc: map mismatch");
+			goto fail;
+/*			panic("ffs_clusteralloc: map mismatch"); */
+		}
 	bno = cg * fs->fs_fpg + blkstofrags(fs, got - run + 1);
 	if (dtog(fs, bno) != cg)
 		panic("ffs_clusteralloc: allocated out of group");