make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=ip6gree_flat_key.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: ip6gre_flat_key.sh

DETECTED CRASH, lowering timeout
# 15.94 [+15.94] TEST: GRE flat IPv4-in-IPv6 with key                                [ OK ]
# 18.10 [+2.16] TEST: GRE flat IPv6-in-IPv6 with key                                [ OK ]
# 21.07 [+2.97] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 23.62 [+2.55] TEST: GRE flat IPv4-in-IPv6 with key (new remote)                   [ OK ]
# 26.01 [+2.39] TEST: GRE flat IPv6-in-IPv6 with key (new remote)                   [ OK ]
# 29.00 [+2.99] TEST: GRE flat IPv4-in-IPv6 with key (old remote)                   [ OK ]
# 31.09 [+2.08] TEST: GRE flat IPv6-in-IPv6 with key (old remote)                   [ OK ]
ok 1 selftests: net/forwarding: ip6gre_flat_key.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__->