Re: v6.12 backport for psi: Fix race when task wakes up before psi_sched_switch() adjusts flags

On Tue, Feb 04, 2025 at 04:31:44PM +0100, Paul Kramme wrote:

Hello,

we are seeing broken CPU PSI metrics across our infrastructure running 6.12, with messages like "psi: inconsistent task state! task=1831:hackbench cpu=8 psi_flags=14 clear=0 set=4" in dmesg. I believe commit 7d9da040575b343085287686fa902a5b2d43c7ca might fix this issue.

psi: Fix race when task wakes up before psi_sched_switch() adjusts flags

It is already queued up for the next 6.12.y release.

thanks,

greg k-h