On Wed, Jan 22, 2025 at 11:56:13AM +0100, Arnd Bergmann wrote:
> On Wed, Jan 22, 2025, at 11:04, Naresh Kamboju wrote:
> > On Tue, 21 Jan 2025 at 23:28, Greg Kroah-Hartman
> > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> > 0000000000000000
> > <4>[ 160.712071] Call trace:
> > <4>[ 160.712597] place_entity (kernel/sched/fair.c:5250 (discriminator 1))
> > <4>[ 160.713221] reweight_entity (kernel/sched/fair.c:3813)
> > <4>[ 160.713802] update_cfs_group (kernel/sched/fair.c:3975 (discriminator 1))
> > <4>[ 160.714277] dequeue_entities (kernel/sched/fair.c:7091)
> > <4>[ 160.714903] dequeue_task_fair (kernel/sched/fair.c:7144 (discriminator 1))
> > <4>[ 160.716502] move_queued_task.isra.0 (kernel/sched/core.c:2437
> > (discriminator 1))
>
> I don't see anything that immediately sticks out as causing this,
> but I do see five scheduler patches backported in stable-rc
> on top of v6.12.8, these are the original commits:
>
> 66951e4860d3 ("sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE")
This one reworks reweight_entity(), but I've been running with that on
top of 13-rc6 for a week or so and not seen this.
