10077 usr/src/uts/ Makefile changes for smatch

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  #
  #       This makefile drives the production of the object file system
  #       kernel module.
  #
*** 70,79 ****
--- 71,83 ----
  
  CERRWARN        += -_gcc=-Wno-parentheses
  CERRWARN        += -_gcc=-Wno-unused-function
  CERRWARN        += -_gcc=-Wno-uninitialized
  
+ # needs work
+ $(OBJS_DIR)/objfs_vfs.o := SMOFF += signed_integer_overflow_check
+ 
  #
  #       Default build targets.
  #
  .KEEP_STATE: