kselftest-cgroup.cgroup_test_cpu tests failing on qemu on lab-broonie

[r-c-n]

kselftest-cgroup.cgroup_test_cpu_test_cpucg_max and kselftest-cgroup.cgroup_test_cpu_test_cpucg_max_nested fail sporadically on qemu_riscv64 and qemu_smp8_riscv64 in lab-broonie only:

kselftest-cgroup.cgroup_test_cpu_test_cpucg_max:

• https://linux.kernelci.org/test/case/id/651327523d2654df228a0a67 (v6.6-rc3-25-g50768a425b46, 2023-09-26 18:47:46) -> passes
• https://linux.kernelci.org/test/case/id/6513320268460bcdff8a0a5a (v6.6-rc3-35-gcac405a3bfa2, 2023-09-26 19:33:22) -> fails
• https://kernelci.org/test/case/id/6513487254960056218a0adf (v6.6-rc3-38-g0e945134b680, 2023-09-26 21:09:06) -> passes

kselftest-cgroup.cgroup_test_cpu_test_cpucg_max_nested:

• https://kernelci.org/test/case/id/650cbaad6dfc20800f8a0a5f (v6.6-rc2-244-g27bbf45eae9ca, 2023-09-21 21:50:37) -> passes
• https://kernelci.org/test/case/id/650de10030500b0de08a0a5f (v6.6-rc2-278-gdc912ba91b7e2, 2023-09-22 18:46:24) -> fails
• https://kernelci.org/test/case/id/650e22e9addeaafa7c8a0a61/ (v6.6-rc2-309-g8018e02a8703, 2023-09-22 23:27:37) -> fails
• https://kernelci.org/test/case/id/650f4000e56973bd9b8a0a8e/ (v6.6-rc2-361-g5a4de7dc9e77, 2023-09-23 19:44:00) -> passes

Most likely not a kernel bug, I'd start by checking for differences between lab-collabora and lab-broonie for this, because all the failures happened in lab-broonie.

[padovan]

Old issue. (also we are not tracking kernel test failure/issues through GitHub anymore)