* Igor Mammedov <imamm...@redhat.com> wrote:
> if during CPU hotplug master CPU failed to wake up AP
> it set percpu x86_cpu_to_apicid to BAD_APICID=0xFFFF for AP.
>
> However following attempt to unplug that CPU will lead to
> out of bound write access to __apicid_to_node[] which is
> 32768 items long on x86_64 kernel.
>
> So drop setting x86_cpu_to_apicid to BAD_APICID in do_boot_cpu()
> and allow acpi_processor_remove()->acpi_unmap_lsapic() cleanly
> remove CPU.
Same suggestion as for the other fix patch: the fix should precede the
patch that exposes it.
Thanks,
Ingo
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