Why crash command giving an error "crash: /usr/lib/debug/lib/modules/kernel/vmlinux: No such file or directory" while opening a vmcore file ?

Issue

• Crash utility giving error message while opening a vmcore file.
  Eg:

# crash vmcore /usr/lib/debug/lib/modules/kernel/vmlinux

crash 6.0.4-2.el6
Copyright (C) 2002-2012  Red Hat, Inc.
Copyright (C) 2004, 2005, 2006  IBM Corporation
Copyright (C) 1999-2006  Hewlett-Packard Co
Copyright (C) 2005, 2006  Fujitsu Limited
Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
Copyright (C) 2005  NEC Corporation
Copyright (C) 1999, 2002, 2007  Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002  Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions.  Enter "help copying" to see the conditions.
This program has absolutely no warranty.  Enter "help warranty" for details.

crash: /usr/lib/debug/lib/modules/kernel/vmlinux: No such file or directory  <<<----

Usage:

  crash [OPTION]... NAMELIST MEMORY-IMAGE  (dumpfile form)
  crash [OPTION]... [NAMELIST]             (live system form)

Enter "crash -h" for details.