selftests/bpf: Add selftest for bpf_task_under_cgroup() in sleepable prog

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The result is as follows:

  $ tools/testing/selftests/bpf/test_progs --name=task_under_cgroup
  #237     task_under_cgroup:OK
  Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED

Without the previous patch, there will be RCU warnings in dmesg when
CONFIG_PROVE_RCU is enabled. While with the previous patch, there will
be no warnings.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20231007135945.4306-2-laoar.shao@gmail.com

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Yafang Shao 2023-10-07 13:59:45 +00:00 • committed by Daniel Borkmann

parent 29a7e00ffa

commit 44cb03f19b

2 changed files with 36 additions and 3 deletions

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11

tools/testing/selftests/bpf/prog_tests/task_under_cgroup.c

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28

tools/testing/selftests/bpf/progs/test_task_under_cgroup.c

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