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
# 16.43 [+16.43] TEST: GRE flat IPv4-in-IPv6 with key                                [ OK ]
# 18.42 [+1.99] TEST: GRE flat IPv6-in-IPv6 with key                                [ OK ]
# 21.19 [+2.77] TEST: ping GRE IPv6, packet size 1800 after MTU change              [ OK ]
# 23.62 [+2.43] TEST: GRE flat IPv4-in-IPv6 with key (new remote)                   [ OK ]
# 25.73 [+2.11] TEST: GRE flat IPv6-in-IPv6 with key (new remote)                   [ OK ]
# 28.50 [+2.77] TEST: GRE flat IPv4-in-IPv6 with key (old remote)                   [ OK ]
# 30.63 [+2.13] 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__->