--- src/sys/kern/vfs_cache.c	2005/03/09 05:16:23	1.52
+++ src/sys/kern/vfs_cache.c	2005/04/03 01:59:10	1.53
@@ -682,7 +682,8 @@ restart:
 			printf("Warning: cache_inval_vp: race-A detected on "
 				"%s\n", ncp->nc_name);
 			cache_put(ncp);
-			cache_drop(next);
+			if (next)
+				cache_drop(next);
 			goto restart;
 		}
 		cache_inval(ncp, flags);