linux-kernel - [PATCH AUTOSEL 5.7 134/274] selftests/bpf: Fix bpf_link leak in ns_current_pid

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Date:   Mon,  8 Jun 2020 19:03:47 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andrii Nakryiko <andriin@...com>,
        Alexei Starovoitov <ast@...nel.org>,
        Carlos Neira <cneirabustos@...il.com>,
        Sasha Levin <sashal@...nel.org>,
        linux-kselftest@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: [PATCH AUTOSEL 5.7 134/274] selftests/bpf: Fix bpf_link leak in ns_current_pid_tgid selftest

From: Andrii Nakryiko <andriin@...com>

[ Upstream commit 8d30e80a049ad699264e4a12911e349f93c7279a ]

If condition is inverted, but it's also just not necessary.

Fixes: 1c1052e0140a ("tools/testing/selftests/bpf: Add self-tests for new helper bpf_get_ns_current_pid_tgid.")
Signed-off-by: Andrii Nakryiko <andriin@...com>
Signed-off-by: Alexei Starovoitov <ast@...nel.org>
Cc: Carlos Neira <cneirabustos@...il.com>
Link: https://lore.kernel.org/bpf/20200429012111.277390-11-andriin@fb.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
index 542240e16564..e74dc501b27f 100644
--- a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
+++ b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
@@ -80,9 +80,6 @@ void test_ns_current_pid_tgid(void)
 		  "User pid/tgid %llu BPF pid/tgid %llu\n", id, bss.pid_tgid))
 		goto cleanup;
 cleanup:
-	if (!link) {
-		bpf_link__destroy(link);
-		link = NULL;
-	}
+	bpf_link__destroy(link);
 	bpf_object__close(obj);
 }
-- 
2.25.1