We hit the following BUG_ON when memory hotplugged before reboot
is unplugged after reboot:
kernel BUG at arch/powerpc/mm/pgtable-frag.c:113!
remove_pagetable+0x594/0x6a0
(unreliable)
remove_pagetable+0x94/0x6a0
vmemmap_free+0x394/0x410
sparse_remove_one_section+0x26c/0x2e8
__remove_pages+0
Bharata B Rao writes:
> We hit the following BUG_ON when memory hotplugged before reboot
> is unplugged after reboot:
>
> kernel BUG at arch/powerpc/mm/pgtable-frag.c:113!
>
> remove_pagetable+0x594/0x6a0
> (unreliable)
> remove_pagetable+0x94/0x6a0
> vmemmap_free+0x394/0x410
> sparse_remove