linux-kernel - [PATCH v5.4.y 0/4] sched/deadline: Fix panic due to nested priority inheritance

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Date:   Mon, 22 Aug 2022 13:09:38 +0530
From:   Ankit Jain <ankitja@...are.com>
To:     juri.lelli@...hat.com, bristot@...hat.com, l.stach@...gutronix.de,
        suhui_kernel@....com, msimmons@...hat.com, peterz@...radead.org,
        glenn@...ora.tech, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org
Cc:     srivatsab@...are.com, srivatsa@...il.mit.edu, akaher@...are.com,
        amakhalov@...are.com, vsirnapalli@...are.com,
        sturlapati@...are.com, bordoloih@...are.com, keerthanak@...are.com,
        Ankit Jain <ankitja@...are.com>
Subject: [PATCH v5.4.y 0/4] sched/deadline: Fix panic due to nested priority inheritance

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   |  14 +++--
 kernel/sched/core.c     |  11 ++--
 kernel/sched/deadline.c | 131 +++++++++++++++++++++++++---------------
 3 files changed, 97 insertions(+), 59 deletions(-)

-- 
2.34.1