Re: [PATCH 6.4 000/292] 6.4.5-rc1 review

[Alexander Potapenko <glider@google.com>]

On Tue, Jul 25, 2023 at 11:59 AM Alexander Potapenko <glider@google.com> wrote:
>
> On Mon, Jul 24, 2023 at 2:10 PM Naresh Kamboju
> <naresh.kamboju@linaro.org> wrote:
> >
> > On Mon, 24 Jul 2023 at 15:50, Alexander Potapenko <glider@google.com> wrote:
> > >
> > > On Sat, Jul 22, 2023 at 6:37 PM Linus Torvalds
> > > <torvalds@linux-foundation.org> wrote:
> > > >
> > > > [ Removed the stable reviewers, bringing in the kfence people ]
> > > >
> > > > See
> > > >
> > > >   https://lore.kernel.org/lkml/CA+G9fYvgy22wiY=c3wLOrCM6o33636abhtEynXhJkqxJh4ca0A@mail.gmail.com/
> > > >
> > > > for the original report. The warning was introduced in 8f0b36497303
> > > > ("mm: kfence: fix objcgs vector allocation"), and Google doesn't find
> > > > any other cases of this.
> > > >
> > > > Anybody?
> > > >
> > > >                     Linus
> > > >
> > >
> > >
> > > > > NOTE:
> > > > > The following kernel warning was noticed while booting qemu-arm64
> > > > > with these configs enabled on stable rc 6.4.5-rc1.
> > > > >
> > > > >  CONFIG_ARM64_64K_PAGES=y
> > > > >  CONFIG_KFENCE=y
> > >
> > > Is there a full config somewhere?
> >
> > Please find build details
> >  - https://storage.tuxsuite.com/public/linaro/lkft/builds/2StEPFnEfoD076PRu8fIxjexhnM/
> >  - https://storage.tuxsuite.com/public/linaro/lkft/builds/2StEPFnEfoD076PRu8fIxjexhnM/config
> >  - https://storage.tuxsuite.com/public/linaro/lkft/builds/2StEPFnEfoD076PRu8fIxjexhnM/vmlinux.xz
> >  - https://storage.tuxsuite.com/public/linaro/lkft/builds/2StEPFnEfoD076PRu8fIxjexhnM/System.map
> >  - https://storage.tuxsuite.com/public/linaro/lkft/builds/2StEPFnEfoD076PRu8fIxjexhnM/Image.gz
>
> I am afraid it still doesn't help much.
> I installed tuxmake into a virtualenv and tried running:
Ok, my buildroot indeed lacked the BR2_ARM64_PAGE_SIZE_64K. I am now
able to boot a kernel with your config, trying to reproduce the
problem locally...