Commit 59a62ea4583e for kernel

commit 59a62ea4583e0f740bb3576ec210b23f39754327
Merge: 0913b580f849 6ae315d37924
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed May 13 15:00:40 2026 -0700

    Merge tag 'sched_ext-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

    Pull sched_ext fixes from Tejun Heo:
     "The bulk of this is hardening of the new sub-scheduler infrastructure.

       - UAFs and lifecycle bugs on the sub-sched attach/detach paths:
         parent sub_kset freed under a racing child, list_del_rcu on an
         uninitialized list head, ops->priv stomped by concurrent
         attach/detach, and a UAF in the init-failure error path

       - Task state-machine reorg closing concurrent enable-vs-dead races: a
         task exiting during the unlocked init window could trip NULL ops
         derefs or skip exit_task() cleanup

       - A scx_link_sched() self-deadlock on scx_sched_lock

       - isolcpus: stop dereferencing the now-RCU-protected HK_TYPE_DOMAIN
         cpumask without RCU, and stop rejecting BPF schedulers when only
         cpuset isolated partitions are active

       - PREEMPT_RT: disable irq_work runs in hardirq context so dumps show
         the failing task rather than the irq_work kthread

       - Assorted !CONFIG_EXT_SUB_SCHED, randconfig, and selftest build
         fixes"

    * tag 'sched_ext-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
      sched_ext: Use HK_TYPE_DOMAIN_BOOT to detect isolcpus= domain isolation
      sched_ext: Defer sub_kset base put to scx_sched_free_rcu_work
      sched_ext: INIT_LIST_HEAD() &sch->all in scx_alloc_and_add_sched()
      sched_ext: Drop NONE early return in scx_disable_and_exit_task()
      sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path
      sched_ext: Clear ops->priv on scx_alloc_and_add_sched() error paths
      sched_ext: Fix ops->priv clobber on concurrent attach/detach
      selftests/sched_ext: Fix build error in dequeue selftest
      sched_ext: Handle SCX_TASK_NONE in disable/switched_from paths
      sched_ext: Close sub-sched init race with post-init DEAD recheck
      sched_ext: Close root-enable vs sched_ext_dead() race with SCX_TASK_INIT_BEGIN
      sched_ext: Replace SCX_TASK_OFF_TASKS flag with SCX_TASK_DEAD state
      sched_ext: Inline scx_init_task() and move RESET_RUNNABLE_AT into scx_set_task_state()
      sched_ext: Cleanups in preparation for the SCX_TASK_INIT_BEGIN/DEAD work
      sched_ext: Use IRQ_WORK_INIT_HARD() to initialize sch->disable_irq_work
      sched_ext: Fix !CONFIG_EXT_SUB_SCHED build warnings
      sched_ext: Drop unused scx_find_sub_sched() stub
      sched_ext: Move scx_error() out of scx_link_sched()'s lock region