Hi Tejun, I re-enabled selftests/sched_ext on BPF CI today. The kernel on CI includes this patch. Sometimes there is a failure on attempt to attach a dsp_local_on scheduler. Examples of failed jobs: * https://github.com/kernel-patches/bpf/actions/runs/12379720791/job/34555104994 * https://github.com/kernel-patches/bpf/actions/runs/12382862660/job/34564648924 * https://github.com/kernel-patches/bpf/actions/runs/12381361846/job/34560047798 Here is a piece of log that is present in failed run, but not in a successful run: 2024-12-17T19:30:12.9010943Z [ 5.285022] sched_ext: BPF scheduler "dsp_local_on" enabled 2024-12-17T19:30:13.9022892Z ERR: dsp_local_on.c:37 2024-12-17T19:30:13.9025841Z Expected skel->data->uei.kind == EXIT_KIND(SCX_EXIT_ERROR) (0 == 1024) 2024-12-17T19:30:13.9256108Z ERR: exit.c:30 2024-12-17T19:30:13.9256641Z Failed to attach scheduler 2024-12-17T19:30:13.9611443Z [ 6.345087] smpboot: CPU 1 is now offline Could you please investigate? Thanks.
