Module does not load, modprobe refuses to load a module

Issue

• When trying to load a module, nothing happens:

# lsmod | grep xfs
# modprobe xfs
WARNING: All config files need .conf: /etc/modprobe.d/test.conf.sav, it will be ignored in a future release.
# lsmod | grep xfs
< >

• The module is present:

# modinfo xfs
filename:       /lib/modules/2.6.32-754.15.3.el6.x86_64/kernel/fs/xfs/xfs.ko
license:        GPL
description:    SGI XFS with ACLs, security attributes, large block/inode numbers, no debug enabled
author:         Silicon Graphics, Inc.
retpoline:      Y
srcversion:     032C69ECC93FCBD7B47F691
depends:        exportfs
vermagic:       2.6.32-754.15.3.el6.x86_64 SMP mod_unload modversions