Re: Can't Build Linux Kernel from Tutorial

Julia Lawall <[email protected]>
Newsgroups dev.linux.lists.outreachy
Message-ID <[email protected]> 

On Mon, 24 Mar 2025, Richard Akintola wrote:

> Good to hear from you Julia,
>
> For the first question: No, I am not using a VM, I am building the kernel on
> my machine's Os which is Parrot Linux Os.
>
> And as for the configuration: yes, I am reusing the the configuration of my
> host machine - I copied my machine's configuration to the repository as
> shown in the tutorial.


OK, try to find something related to signatures in your configuration.
Distro configurations often have this issue.  For Debian there is some PEM
thing.

julia

>
> Richard Akintola
>
> On Mon, 24 Mar 2025, 14:57 Julia Lawall, <[email protected]> wrote:
>
>
>       On Mon, 24 Mar 2025, Richard Akintola wrote:
>
>       > Hello Julia,
>       >
>       > I have been trying to build the Linux Kernel via the tutorial
>       on my
>       > machine to no avail.
>       >
>       > This has prevented me from making a PATCH.
>       >
>       > This is the Os and Kernel version of my machine
>       > OS: Parrot Security 6.3 (lorikeet) x86_64
>       > Kernel: 6.5.0-13parrot1-amd64
>
>       Sort of basic questions are whether you are using a VM and how
>       much memory
>       you have.
>
>       Afterwards, maybe it is a configuration problems?  Are you
>       reusing the
>       configuration of your host machine?  Here are some old posts on
>       disabling
>       module signing:
>
> https://stackoverflow.com/questions/29806414/how-to-disable-kernel-module-s
>       igning-in-linux
> https://kernelnewbies.kernelnewbies.narkive.com/kKXLBu8C/how-to-disable-mod
> ule-verification-failed-signature-and-or-required-key-missing-tainting-ker
>       nel
>
>       If you change the configuration file, do make olddefconfig
>       afterwards to
>       make sure your changes are take into account.
>
>       Let me know how it goes.
>
>       julia
>
>
>       >
>       > Below is the error I got while installing the kernel build
>       >
>       > ...
>       >
>       > INSTALL /lib/modules/6.14.0-rc1custom-
>       > ola+/kernel/net/vmw_vsock/vmw_vsock_virtio_transport_common.ko
>       >   INSTALL /lib/modules/6.14.0-rc1custom-
>       > ola+/kernel/net/vmw_vsock/hv_sock.ko
>       >   INSTALL /lib/modules/6.14.0-rc1custom-
>       > ola+/kernel/net/vmw_vsock/vsock_loopback.ko
>       >   INSTALL
>       /lib/modules/6.14.0-rc1custom-ola+/kernel/net/nsh/nsh.ko
>       >   INSTALL
>       /lib/modules/6.14.0-rc1custom-ola+/kernel/net/hsr/hsr.ko
>       >   INSTALL
>       /lib/modules/6.14.0-rc1custom-ola+/kernel/net/qrtr/qrtr.ko
>       >   INSTALL
>       /lib/modules/6.14.0-rc1custom-ola+/kernel/net/qrtr/qrtr-
>       > mhi.ko
>       >   DEPMOD  /lib/modules/6.14.0-rc1custom-ola+
>       >   INSTALL /boot
>       > run-parts: executing /etc/kernel/postinst.d/dkms
>       6.14.0-rc1custom-ola+
>       > /boot/vmlinuz-6.14.0-rc1custom-ola+
>       > dkms: running auto installation service for kernel
>       6.14.0-rc1custom-
>       > ola+.
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > readelf: Error: Not an ELF file - it has the wrong magic bytes
>       at the
>       > start
>       > Sign command:
>       /lib/modules/6.14.0-rc1custom-ola+/build/scripts/sign-
>       > file
>       > Binary
>       /lib/modules/6.14.0-rc1custom-ola+/build/scripts/sign-file not
>       > found, modules won't be signed
>       >
>       > Building module:
>       > Cleaning build area...
>       > make -j4 KERNELRELEASE=6.14.0-rc1custom-ola+
>       KVER=6.14.0-rc1custom-
>       > ola+........(bad exit status: 2)
>       > Error! Bad return status for module build on kernel:
>       6.14.0-rc1custom-
>       > ola+ (x86_64)
>       > Consult /var/lib/dkms/broadcom-sta/6.30.223.271/build/make.log
>       for more
>       > information.
>       > Sign command:
>       /lib/modules/6.14.0-rc1custom-ola+/build/scripts/sign-
>       > file
>       > Binary
>       /lib/modules/6.14.0-rc1custom-ola+/build/scripts/sign-file not
>       > found, modules won't be signed
>       >
>       > Building module:
>       > Cleaning build area...(bad exit status: 2)
>       > kernelver=6.14.0-rc1custom-ola+ ./dkms-make.sh...(bad exit
>       status: 2)
>       > Error! Bad return status for module build on kernel:
>       6.14.0-rc1custom-
>       > ola+ (x86_64)
>       > Consult /var/lib/dkms/realtek-
>       > rtl8814au/5.8.5.1~git20240527.d8208c8/build/make.log for more
>       > information.
>       > Sign command:
>       /lib/modules/6.14.0-rc1custom-ola+/build/scripts/sign-
>       > file
>       > Binary
>       /lib/modules/6.14.0-rc1custom-ola+/build/scripts/sign-file not
>       > found, modules won't be signed
>       >
>       > Building module:
>       > Cleaning build area...(bad exit status: 2)
>       > 'make' -j4 KVER=6.14.0-rc1custom-ola+
>       KSRC=/lib/modules/6.14.0-
>       > rc1custom-ola+/build...(bad exit status: 2)
>       > Error! Bad return status for module build on kernel:
>       6.14.0-rc1custom-
>       > ola+ (x86_64)
>       > Consult /var/lib/dkms/realtek-
>       > rtl88xxau/5.6.4.2~git20240510.b44d288/build/make.log for more
>       > information.
>       > Error! One or more modules failed to install during
>       autoinstall.
>       > Refer to previous errors for more information.
>       > dkms: autoinstall for kernel: 6.14.0-rc1custom-ola+ failed!
>       > run-parts: /etc/kernel/postinst.d/dkms exited with return code
>       11
>       > make[2]: *** [arch/x86/Makefile:321: install] Error 1
>       > make[1]: ***
>       [/home/laolu/Desktop/Outreachy_Contributions/Linux-
>       > Kernel/git/kernels/staging/Makefile:372: __build_one_by_one]
>       Error 2
>       > make[1]: Target 'modules_install' not remade because of
>       errors.
>       > make[1]: Target 'install' not remade because of errors.
>       > make: *** [Makefile:251: __sub-make] Error 2
>       > make: Target 'modules_install' not remade because of errors.
>       > make: Target 'install' not remade because of errors.
>       >
>       >
>       >
>
>
>
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