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
# 17.00 [+17.00] TEST: GRE flat IPv4-in-IPv6 with key                                [ OK ]
# 18.60 [+1.60] TEST: GRE flat IPv6-in-IPv6 with key                                [ OK ]
# 20.85 [+2.25] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 22.66 [+1.81] TEST: GRE flat IPv4-in-IPv6 with key (new remote)                   [ OK ]
# 24.11 [+1.46] TEST: GRE flat IPv6-in-IPv6 with key (new remote)                   [ OK ]
# 26.31 [+2.20] TEST: GRE flat IPv4-in-IPv6 with key (old remote)                   [ OK ]
# 27.84 [+1.53] 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__->