Re: [PATCH v3 0/3] page_owner: Fix refcount imbalance

[Alexandre Ghiti]

Hi Oscar,

On 26/03/2024 07:30, Oscar Salvador wrote:
> This series consists of a refactoring/correctness of updating the metadata
> of tail pages and a couple of fixups for the refcounting part.
>
>  From this series on, instead of counting the stacks, we count the outstanding
> nr_base_pages each stack has, which gives us a much better memory overview.
> The other fixup is for the migration part.
>
> A more detailed explanation can be found in the changelog of the respective
> patches.
>
> Oscar Salvador (3):
>    mm,page_owner: Update metada for tail pages
>    mm,page_owner: Fix refcount imbalance
>    mm,page_owner: Fix accounting of pages when migrating
>
>   Documentation/mm/page_owner.rst |  73 +++++++------
>   mm/page_owner.c                 | 184 +++++++++++++++++++-------------
>   2 files changed, 146 insertions(+), 111 deletions(-)

This fixes the following report from syzbot: 
https://lore.kernel.org/linux-riscv/00000000000070a2660614b83885@xxxxxxxxxx/T/#t

So you can add:

Tested-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>

Thanks,

Alex