Re: [PATCH] sched/fair: Fix inaccurate h_nr_runnable accounting with delayed dequeue
From: Madadi Vineeth Reddy
Date: Mon Jan 20 2025 - 03:45:26 EST
> However, I was unable to trigger the WARN_ON by running hackbench in a
> cgroup without the patch. Could you please share the specific test
> scenario or configuration you used to reproduce it?
My mistake: SCHED_WARN_ON is a WARN_ONCE, so I had to clear it before
running hackbench to ensure the WARN_ON could be triggered again.
Now I am able to trigger the WARN_ON in the unpatched kernel while
running hackbench after executing `echo 1 > /sys/kernel/debug/clear_warn_once`
following the initial warning during the boot process. I have verified
that the patched kernel fixes the issue.
Thanks,
Madadi Vineeth Reddy