Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@huawei.com> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Ryan Ding <ryan.ding@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>