From: Jiri Benc jbenc@redhat.com

[ Upstream commit 3b054b7133b4ad93671c82e8d6185258e3f1a7a5 ]

When run_kselftests.sh is run, it hangs after test_tc_tunnel.sh. The reason is test_tc_tunnel.sh ensures the server ('nc -l') is run all the time, starting it again every time it is expected to terminate. The exception is the final client_connect: the server is not started anymore, which ensures no process is kept running after the test is finished.

For a sit test, though, the script is terminated prematurely without the final client_connect and the 'nc' process keeps running. This in turn causes the run_one function in kselftest/runner.sh to hang forever, waiting for the runaway process to finish.

Ensure a remaining server is terminated on cleanup.

Fixes: f6ad6accaa99 ("selftests/bpf: expand test_tc_tunnel with SIT encap") Signed-off-by: Jiri Benc jbenc@redhat.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Willem de Bruijn willemb@google.com Link: https://lore.kernel.org/bpf/60919291657a9ee89c708d8aababc28ebe1420be.1573821... Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/bpf/test_tc_tunnel.sh | 5 +++++ 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/bpf/test_tc_tunnel.sh b/tools/testing/selftests/bpf/test_tc_tunnel.sh index ff0d31d38061f..7c76b841b17bb 100755 --- a/tools/testing/selftests/bpf/test_tc_tunnel.sh +++ b/tools/testing/selftests/bpf/test_tc_tunnel.sh @@ -62,6 +62,10 @@ cleanup() { if [[ -f "${infile}" ]]; then rm "${infile}" fi + + if [[ -n $server_pid ]]; then + kill $server_pid 2> /dev/null + fi }

server_listen() { @@ -77,6 +81,7 @@ client_connect() {

verify_data() { wait "${server_pid}" + server_pid= # sha1sum returns two fields [sha1] [filepath] # convert to bash array and access first elem insum=($(sha1sum ${infile}))