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[bpf,v4,2/2] selftests/bpf: Fix umount cgroup2 error in test_sockmap

Message ID 0399983bde729708773416b8488bac2cd5e022b8.1712639568.git.tanggeliang@kylinos.cn (mailing list archive)
State Accepted
Commit d75142dbeb2bd1587b9cc19f841578f541275a64
Delegated to: BPF
Headers show
Series Two fixes for test_sockmap | expand

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Commit Message

Geliang Tang April 9, 2024, 5:18 a.m. UTC 
From: Geliang Tang <tanggeliang@kylinos.cn>

This patch fixes the following "umount cgroup2" error in test_sockmap.c:

 (cgroup_helpers.c:353: errno: Device or resource busy) umount cgroup2

Cgroup fd cg_fd should be closed before cleanup_cgroup_environment().

Fixes: 13a5f3ffd202 ("bpf: Selftests, sockmap test prog run without setting cgroup")
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
---
 tools/testing/selftests/bpf/test_sockmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c
index 4feed253fca2..efb4f34bf703 100644
--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -2107,9 +2107,9 @@  int main(int argc, char **argv)
 		free(options.whitelist);
 	if (options.blacklist)
 		free(options.blacklist);
+	close(cg_fd);
 	if (cg_created)
 		cleanup_cgroup_environment();
-	close(cg_fd);
 	return err;
 }