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

[Naresh Kamboju <naresh.kamboju@linaro.org>]

On Tue, 25 Jul 2023 at 15:29, 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:
>
>  $ tuxmake --runtime podman --target-arch arm64 --toolchain gcc-12
> --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2StEPFnEfoD076PRu8fIxjexhnM/config
>
> , but after downloading some Docker stuff it died with the following error:
>
> Error: copying system image from manifest list: writing blob: adding
> layer with blob
> "sha256:faef57eae888cbe4a5613eca6741b5e48d768b83f6088858aee9a5a2834f8151":
> processing tar file(potentially insufficient UIDs or GIDs available in
> user namespace (requested 0:42 for /etc/gshadow): Check /etc/subuid
> and /etc/subgid if configured locally and run podman-system-migrate:
> lchown /etc/gshadow: invalid argument): exit status 1

This might helpful,

# Some images require this range in the user namespace

echo "{username}:4000:165535" > /etc/subuid
echo "{username}:4000:165535" > /etc/subgid

Replace {username} with the username in your machine.

- Naresh