Add a regression test to see if kernel hangs in order to
look after CVE-2020-12655 and check if the corresponding
fix is applied as well.
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>