testapp_validate_traffic() doesn't release the sockets and the umem
created by the threads if the test isn't currently in its last step.
Thus, if the swap_xsk_resources() fails before the last step, the
created resources aren't cleaned up.

Clean the sockets and the umem in case of swap_xsk_resources() failure.

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
---
 tools/testing/selftests/bpf/test_xsk.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_xsk.c b/tools/testing/selftests/bpf/test_xsk.c
index 84b724731e26d0c7e67131ec1bd562e223d3d09d..8fe75845d7a6aa5342229fa419fcbaa411ae9e70 100644
--- a/tools/testing/selftests/bpf/test_xsk.c
+++ b/tools/testing/selftests/bpf/test_xsk.c
@@ -1866,8 +1866,13 @@ int testapp_xdp_prog_cleanup(struct test_spec *test)
 	if (testapp_validate_traffic(test))
 		return TEST_FAILURE;
 
-	if (swap_xsk_resources(test))
+	if (swap_xsk_resources(test)) {
+		clean_sockets(test, test->ifobj_rx);
+		clean_sockets(test, test->ifobj_tx);
+		clean_umem(test, test->ifobj_rx, test->ifobj_tx);
 		return TEST_FAILURE;
+	}
+
 	return testapp_validate_traffic(test);
 }
 

-- 
2.51.0