Subject: Re: [PATCH 01/39] memcg_write_event_control(): fix a user-triggerable oops

From: Al Viro <[email-masked]>
Date: Tue, 30 Jul 2024 08:18:51 +0100

On Tue, Jul 30, 2024 at 09:13:38AM +0200, Michal Hocko wrote:
> On Tue 30-07-24 01:15:47, [email-masked] wrote:
> > From: Al Viro <[email-masked]>
> > 
> > we are *not* guaranteed that anything past the terminating NUL
> > is mapped (let alone initialized with anything sane).
> > 
> > [the sucker got moved in mainline]
> > 
> 
> You could have preserved
> Fixes: 0dea116876ee ("cgroup: implement eventfd-based generic API for notifications")
> Cc: stable
> 
> > Signed-off-by: Al Viro <[email-masked]>
> 
> and
> Acked-by: Michal Hocko <[email-masked]>

Will do; FWIW, I think it would be better off going via the
cgroup tree - it's completely orthogonal to the rest of the
series, the only relation being "got caught during the same
audit"...