selftests/bpf: Close cgrp fd before calling cleanup_cgroup_environment()

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There is error log when htab-mem benchmark completes. The error log
looks as follows:

$ ./bench htab-mem -d1
Setting up benchmark 'htab-mem'...
Benchmark 'htab-mem' started.
......
(cgroup_helpers.c:353: errno: Device or resource busy) umount cgroup2

Fix it by closing cgrp fd before invoking cleanup_cgroup_environment().

Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20231219135727.2661527-1-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

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Hou Tao 2023-12-19 21:57:27 +08:00 • committed by Alexei Starovoitov

parent 85dd93ac6e

commit 441c725ed5

1 changed files with 1 additions and 0 deletions

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tools/testing/selftests/bpf/benchs/bench_htab_mem.c

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