Re: [PATCH v4.19.y 0/4] sched/deadline: Fix panic due to nested priority inheritance

Greg KH
2022-08-25T12:31:43Z

On Mon, Aug 22, 2022 at 01:13:44PM +0530, Ankit Jain wrote:
> When a CFS task that was boosted by a SCHED_DEADLINE
> task boosts another CFS task (nested priority inheritance),
> Kernel panic is observed.
> Fixing priority inheritance changes the way how sched_deadline
> attributes are being inherited from original donor task.
>
> Additional supporting patches are added to fix throttling of
> boosted tasks.
>
> Daniel Bristot de Oliveira (1):
> sched/deadline: Unthrottle PI boosted threads while enqueuing
>
> Lucas Stach (1):
> sched/deadline: Fix stale throttling on de-/boosted tasks
>
> Juri Lelli (1):
> sched/deadline: Fix priority inheritance with multiple scheduling
> classes
>
> Hui Su (1):
> kernel/sched: Remove dl_boosted flag comment
>
> include/linux/sched.h | 13 ++--
> kernel/sched/core.c | 11 ++--
> kernel/sched/deadline.c | 131 +++++++++++++++++++++++++---------------
> 3 files changed, 96 insertions(+), 59 deletions(-)
>
> --
> 2.34.1
>

Both sets of backports now queued up, thanks.

greg k-h