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

DETECTED CRASH, lowering timeout

WAIT TIMEOUT stdout

Ctrl-C stdout

Ctrl-C stdout
^C
WAIT TIMEOUT stdout