Re: trouble booting into staging kernel

[Deepak R Varma <drv@mailo.com>]

On Mon, Oct 10, 2022 at 12:54:27PM +0200, Stefano Brivio wrote:
> Hi Deepak,
>
> On Sun, 9 Oct 2022 23:21:25 +0530
> Deepak R Varma <drv@mailo.com> wrote:
>
> > Hello,
> > I am natively running 5.15.0-48-generic on my HP Laptop with Secure boot on. I
> > tried to follow the Kernel First patch tutorial steps and managed to build
> > Kernel release 6.0.0rc4.
>
> Somewhat unrelated: in a past Outreachy round, we did a bit of work on
> a tool with the idea of making these steps easier. It's not mentioned
> in the tutorial, as we didn't have time to polish it up completely, but
> maybe you want to give it a try. Basic usage demo and source at:
>
>   https://mbuto.sh

Hello Stefano,
I will definitely explore this tool and attempt to utilize it if I can. Thank
you very much for sharing the details.

>
> I'm not mentoring for this round, so I'm just throwing this around
> without claiming any responsibility. :)

No problem. I am sure the tool will be a new learning.

>
> About the specific issue you're hitting, I don't have any pointer other
> than what Julia already shared.
Okay. I am working on the link shared by Julia and would share the outcome soon.

Thank you all.

./drv

>
> > There were issues during the module building associated
> > with the certificates / signing of the modules. I got those supressed by
> > emptying the following two config parameters as copied over from the native
> > config file:
> >
> > CONFIG_SYSTEM_TRUSTED_KEYS="debian/canonical-certs.pem"
> > CONFIG_SYSTEM_REVOCATION_KEYS="debian/canonical-revoked-certs.pem"
> >
> > set to new value
> >
> > CONFIG_SYSTEM_TRUSTED_KEYS=""
> > CONFIG_SYSTEM_REVOCATION_KEYS=""
> >
> > The build was successful, however, I am unable to boot into my new kernel and
> > have received following errors:
> >
> > error: bad shim signature
> > Loading initial ramdisk
> > error: you need to load the kernel first
> >
> > I tried to seek from net, but did not find any workable resolution. Can you
> > please suggested how can I correct this error or if I missed any steps?
> >
> > Thank you,
> > Deepak.
>
> --
> Stefano
>
>