On Sun, Apr 25, 2021 at 03:51:56PM +0800, Kefeng Wang wrote:
> we see the PC is at PageLRU, same reason like arm64 panic log,
>
> "PageBuddy in move_freepages returns false Then we call PageLRU, the macro
> calls PF_HEAD which is compound_page() compound_page reads
> page->compound_head, it is 0xffffffffffffffff, so it resturns
> 0xfffffffffffffffe - and accessing this address causes crash"
Oh. I posted patches to fix this back in 2018.
https://lore.kernel.org/linux-mm/[email protected]/
and 2019.
https://lore.kernel.org/linux-mm/[email protected]/
and 2020.
https://lore.kernel.org/linux-mm/[email protected]/
Looks like it's about that time of year for me to try to fix this again.