Re: [PATCH stable 4.9] mm: memcontrol: fix NULL pointer crash in test_clear_page_writeback()

[Johannes Weiner]

On Tue, Feb 09, 2021 at 12:26:15PM -0800, Florian Fainelli wrote:
> From: Johannes Weiner <hannes@xxxxxxxxxxx>
> 
> commit 739f79fc9db1b38f96b5a5109b247a650fbebf6d upstream

...

> This patch is present in a downstream Android tree:
> 
> https://source.mcwhirter.io/craige/bluecross/commit/d4a742865c6b69ef931694745ef54965d7c9966c
> 
> and I happened to have stumbled across the same problem too.
> 
> Johannes can you review it for correctness with respect to the 4.9
> kernel? Thanks!

Looks good to me.