make -C tools/testing/selftests TARGETS="net/forwarding" TEST_PROGS=ip6gree_flat_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: ip6gre_flat_keys.sh

DETECTED CRASH, lowering timeout
# 17.06 [+17.06] TEST: GRE flat IPv4-in-IPv6 with ikey/okey                          [ OK ]
# 18.62 [+1.56] TEST: GRE flat IPv6-in-IPv6 with ikey/okey                          [ OK ]
# 21.01 [+2.39] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 22.76 [+1.76] TEST: GRE flat IPv4-in-IPv6 with ikey/okey (new remote)             [ OK ]
# 24.28 [+1.52] TEST: GRE flat IPv6-in-IPv6 with ikey/okey (new remote)             [ OK ]
# 26.41 [+2.13] TEST: GRE flat IPv4-in-IPv6 with ikey/okey (old remote)             [ OK ]
# 27.88 [+1.47] TEST: GRE flat IPv6-in-IPv6 with ikey/okey (old remote)             [ OK ]
ok 1 selftests: net/forwarding: ip6gre_flat_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__->