linux-kernel - [GIT PULL] sched_ext: Fixes for v6.18-rc3

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Message-ID: <36450bebbc782be498d762fcbcd99451@kernel.org>
Date: Mon, 27 Oct 2025 06:51:28 -1000
From: Tejun Heo <tj@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org, sched-ext@...ts.linux.dev, David Vernet <void@...ifault.com>, Andrea Righi <arighi@...dia.com>, Changwoo Min <changwoo@...lia.com>
Subject: [GIT PULL] sched_ext: Fixes for v6.18-rc3

Hi Linus,

The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787:

  Linux 6.18-rc1 (2025-10-12 13:42:36 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git tags/sched_ext-for-6.18-rc3-fixes

for you to fetch changes up to a3c4a0a42e61aad1056a3d33fd603c1ae66d4288:

  sched_ext: fix flag check for deferred callbacks (2025-10-16 08:34:00 -1000)

----------------------------------------------------------------
sched_ext: Fixes for v6.18-rc3

- Fix scx_kick_pseqs corruption when multiple schedulers are loaded
  concurrently

- Allocate scx_kick_cpus_pnt_seqs lazily using kvzalloc() to handle systems
  with large CPU counts

- Defer queue_balance_callback() until after ops.dispatch to fix callback
  ordering issues

- Sync error_irq_work before freeing scx_sched to prevent use-after-free

- Mark scx_bpf_dsq_move_set_[slice|vtime]() with KF_RCU for proper RCU
  protection

- Fix flag check for deferred callbacks

----------------------------------------------------------------
Andrea Righi (1):
      sched_ext: Fix scx_kick_pseqs corruption on concurrent scheduler loads

Emil Tsalapatis (2):
      sched_ext: defer queue_balance_callback() until after ops.dispatch
      sched_ext: fix flag check for deferred callbacks

Tejun Heo (3):
      sched_ext: Mark scx_bpf_dsq_move_set_[slice|vtime]() with KF_RCU
      sched_ext: Sync error_irq_work before freeing scx_sched
      sched_ext: Allocate scx_kick_cpus_pnt_seqs lazily using kvzalloc()

 kernel/sched/ext.c   | 126 +++++++++++++++++++++++++++++++++++++++++++++------
 kernel/sched/sched.h |   1 +
 2 files changed, 112 insertions(+), 15 deletions(-)

Thanks.

--
tejun