netdev - [PATCH bpf-next v3 05/14] selftests/bpf: test_xsk: Release resources when swap fails

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Message-Id: <20250904-xsk-v3-5-ce382e331485@bootlin.com>
Date: Thu, 04 Sep 2025 12:10:20 +0200
From: "Bastien Curutchet (eBPF Foundation)" <bastien.curutchet@...tlin.com>
To: Björn Töpel <bjorn@...nel.org>, 
 Magnus Karlsson <magnus.karlsson@...el.com>, 
 Maciej Fijalkowski <maciej.fijalkowski@...el.com>, 
 Jonathan Lemon <jonathan.lemon@...il.com>, 
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
 Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, 
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Mykola Lysenko <mykolal@...com>, 
 Shuah Khan <shuah@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
 Jakub Kicinski <kuba@...nel.org>, Jesper Dangaard Brouer <hawk@...nel.org>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Alexis Lothore <alexis.lothore@...tlin.com>, netdev@...r.kernel.org, 
 bpf@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 "Bastien Curutchet (eBPF Foundation)" <bastien.curutchet@...tlin.com>
Subject: [PATCH bpf-next v3 05/14] selftests/bpf: test_xsk: Release
 resources when swap fails

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@...tlin.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 f70a05d570681e36d3e592a6845637402d1bb58f..0805917eaa1a33469fef2f1ad0757975f39d3077 100644
--- a/tools/testing/selftests/bpf/test_xsk.c
+++ b/tools/testing/selftests/bpf/test_xsk.c
@@ -1873,8 +1873,13 @@ 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);
 }

-- 
2.50.1