make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=ipip_fflat_gre_keys.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-4/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
make[1]: Entering directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
TAP version 13
1..1
# overriding timeout to 21600
# selftests: net/forwarding: ipip_flat_gre_keys.sh
# 18.61 [+18.61] TEST: ping gre flat with ikey/okey                                  [ OK ]
# 26.91 [+8.30] TEST: ping gre packet size 1800 after MTU change                    [ OK ]
ok 1 selftests: net/forwarding: ipip_flat_gre_keys.sh
make[1]: Leaving directory '/home/virtme/testing-4/tools/testing/selftests/net/forwarding'
make: Leaving directory '/home/virtme/testing-4/tools/testing/selftests'
xx__-> echo $?
0
xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
xx__->