[ Upstream commit be7e9786c9155c2942cd53b813e4723be67e07c4 ] Set FAILING_LINKS as an env var with a limited scope only when calling run_tests(). Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Geliang Tang <geliang.tang@suse.com> Signed-off-by: Mat Martineau <martineau@kernel.org> Link: https://lore.kernel.org/r/20230623-send-net-next-20230623-v1-3-a883213c8ba9@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: 7cefbe5e1dac ("selftests: mptcp: fix fastclose with csum failure") Signed-off-by: Sasha Levin <sashal@kernel.org>