Merge tag 'sched_ext-for-7.2-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fixes from Tejun Heo:

 - More lifecycle fixes for the new sub-scheduler support: a failed
   enable could tear down a never-linked sub-scheduler in a way that
   races the root scheduler's disable and leads to a use-after-free,
   tasks that were not on the ext class could still get the enable
   callback, and a policy-rejection path silently rewrote a running
   task's scheduling policy instead of aborting the scheduler.

 - Scheduler enable/disable could deadlock with cgroup removal and a
   concurrent cgroup weight write through kernfs. Fixed by reordering
   lock acquisition.

 - Sync wakeups could leave the waker CPU incorrectly marked idle in the
   built-in idle-CPU tracking.

 - A selftest fix for sleeping tasks whose CPU affinity changes before
   wakeup.

* tag 'sched_ext-for-7.2-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  selftests/sched_ext: Handle sleeping task affinity changes in numa test
  sched_ext: Mark waker CPU busy when selected in WAKE_SYNC case
  sched_ext: Don't enable non-ext tasks in the sub-sched task loops
  sched_ext: Skip sub-disable teardown for never-linked sub-schedulers
  sched_ext: Take cgroup_lock() first in scx_cgroup_lock()
  sched_ext: Reject setting disallow from init_task outside the enable path

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