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
# 17.26 [+17.26] TEST: GRE flat IPv4-in-IPv6 with key                                [ OK ]
# 19.36 [+2.10] TEST: GRE flat IPv6-in-IPv6 with key                                [ OK ]
# 22.17 [+2.81] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 24.72 [+2.56] TEST: GRE flat IPv4-in-IPv6 with key (new remote)                   [ OK ]
# 26.81 [+2.08] TEST: GRE flat IPv6-in-IPv6 with key (new remote)                   [ OK ]
# 29.89 [+3.08] TEST: GRE flat IPv4-in-IPv6 with key (old remote)                   [ OK ]
# 32.06 [+2.17] TEST: GRE flat IPv6-in-IPv6 with key (old remote)                   [ OK ]

DETECTED CRASH, lowering timeout
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__->