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- Reset clang's Shadow Call Stack on hotplug to prevent it from overflowing 

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Merge tag 'sched_urgent_for_v5.15_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Borislav Petkov:
 "Reset clang's Shadow Call Stack on hotplug to prevent it from
  overflowing"

* tag 'sched_urgent_for_v5.15_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/scs: Reset the shadow stack when idle_task_exit
This commit is contained in:
Linus Torvalds 2021-10-24 07:04:21 -10:00
parent 16bc177666 63acd42c0d
commit 6c62666d88
1 changed files with 1 additions and 0 deletions
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1
kernel/sched/core.c
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@ -8795,6 +8795,7 @@ void idle_task_exit(void)
finish_arch_post_lock_switch();
}
scs_task_reset(current);
/* finish_cpu(), as ran on the BP, will clean up the active_mm state */
}