Merge tag 'sched_ext-for-6.12-rc7-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fix from Tejun Heo:
 "One more fix for v6.12-rc7

  ops.cpu_acquire() was being invoked with the wrong kfunc mask allowing
  the operation to call kfuncs which shouldn't be allowed. Fix it by
  using SCX_KF_REST instead, which is trivial and low risk"

* tag 'sched_ext-for-6.12-rc7-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  sched_ext: ops.cpu_acquire() should be called with SCX_KF_REST

Author: torvalds

kernel/sched/ext.c

@@ -2645,7 +2645,7 @@ static int balance_one(struct rq *rq, struct task_struct *prev)
 		 * emitted in scx_next_task_picked().
 		 */
 		if (SCX_HAS_OP(cpu_acquire))
-			SCX_CALL_OP(0, cpu_acquire, cpu_of(rq), NULL);
+			SCX_CALL_OP(SCX_KF_REST, cpu_acquire, cpu_of(rq), NULL);
 		rq->scx.cpu_released = false;
 	}