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selftests/bpf, flow_dissector: Close TAP device FD after the test 

[ Upstream commit b8215dce7d ]

test_flow_dissector leaves a TAP device after it's finished, potentially
interfering with other tests that will run after it. Fix it by closing the
TAP descriptor on cleanup.

Fixes: 0905beec9f ("selftests/bpf: run flow dissector tests in skb-less mode")
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200531082846.2117903-11-jakub@cloudflare.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Jakub Sitnicki 2020-05-31 10:28:44 +02:00 committed by Greg Kroah-Hartman
parent e7b1564a24
commit c48a842d8c
1 changed files with 1 additions and 0 deletions
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tools/testing/selftests/bpf/prog_tests/flow_dissector.c
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@ -523,6 +523,7 @@ void test_flow_dissector(void)
CHECK_ATTR(err, tests[i].name, "bpf_map_delete_elem %d\n", err);
}
close(tap_fd);
bpf_prog_detach(prog_fd, BPF_FLOW_DISSECTOR);
bpf_object__close(obj);
}