Re: [PATCH v2 2/6] powerpc/kexec_file: Add KEXEC_SIG support.

Michal Suchánek
2021-12-09T09:22:04Z

Hello,

On Wed, Dec 08, 2021 at 08:51:47PM -0500, Nayna wrote:
>
> On 11/25/21 13:02, Michal Suchanek wrote:
> > Copy the code from s390x
> >
> > Signed-off-by: Michal Suchanek<msuchanek@suse.de>
> > ---
> > arch/powerpc/Kconfig | 11 +++++++++++
> > arch/powerpc/kexec/elf_64.c | 36 ++++++++++++++++++++++++++++++++++++
> > 2 files changed, 47 insertions(+)
> >
> > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> > index ac0c515552fd..ecc1227a77f1 100644
> > --- a/arch/powerpc/Kconfig
> > +++ b/arch/powerpc/Kconfig
> > @@ -561,6 +561,17 @@ config KEXEC_FILE
> > config ARCH_HAS_KEXEC_PURGATORY
> > def_bool KEXEC_FILE
> >
> > +config KEXEC_SIG
> > + bool "Verify kernel signature during kexec_file_load() syscall"
> > + depends on KEXEC_FILE && MODULE_SIG_FORMAT
>
> After manually applying the patch, the build is failing with the following
> error:
>
> build failed with error "arch/powerpc/kexec/elf_64.o: In function
> `elf64_verify_sig':
> /root/kernel/linus/linux/arch/powerpc/kexec/elf_64.c:160: undefined
> reference to `verify_appended_signature'"

This patch does not add call to verify_appended_signature.

Maybe you applied the following patch as well?

Thanks

Michal