On Thu, Oct 17, 2019 at 07:50:18AM +0000, Naoya Horiguchi wrote: > Actually I guess that !pfn_valid() never happens when called from > madvise_inject_error(), because madvise_inject_error() gets pfn via > get_user_pages_fast() which only returns valid page for valid pfn. > > And we plan to remove MF_COUNT_INCREASED by Oscar's re-design work, > so I start feeling that this patch should come on top of his tree. Hi Naoya, I am pretty much done with my testing. If you feel like, I can take the patch and add it on top of [1] , then I will do some more testing and, if nothing pops up, I will send it upstream. [1] https://github.com/leberus/linux/tree/hwpoison-v2 > > Thanks, > Naoya Horiguchi -- Oscar Salvador SUSE L3