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

Ankit Jain
2022-08-22T07:47:15Z

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(-)

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2.34.1