stable inclusion
from linux-4.19.193
commit b190383c714a379002b00bc8de43371e78d291d8

--------------------------------

After the backport of the changes to fix CVE 2019-7308, the
selftests also need to be fixed up, as was done originally
in mainline 80c9b2fa ("bpf: add various test cases to selftests").

This is a backport of upstream commit 80c9b2fa ("bpf: add various test
cases to selftests") adapted to 4.19 in order to fix the
selftests that began to fail after CVE-2019-7308 fixes.
Suggested-by: NFrank van der Linden <fllinden@amazon.com>
Signed-off-by: NOvidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>