Re: [REGRESSION] linux 6.6.18 and later fails to boot with "initramfs unpacking failed: invalid magic at start of compressed archive"

[mavrix#kernel@simplelogin.com]

On 7/17/24 5:55 PM, Ard Biesheuvel - ardb at kernel.org wrote:
> Does it make any difference if you boot with 'nokaslr' on the command line?
>
> Another thing you might try is applying the hunk below, to try and see
> whether the placement of boot_params in the binary is causing the
> issue.
>
> I can also provide a partial backport of the offending patch, to
> figure out whether it is the allocation that triggers the issue, or
> the way the boot_params data structure is populated.
>
>
>
> --- a/arch/x86/boot/compressed/vmlinux.lds.S
> +++ b/arch/x86/boot/compressed/vmlinux.lds.S
> @@ -55,8 +55,7 @@ SECTIONS
>          . = ALIGN(L1_CACHE_BYTES);
>          .bss : {
>                  _bss = . ;
> -               *(.bss)
> -               *(.bss.*)
> +               *(SORT_BY_ALIGNMENT(.bss*))
>                  *(COMMON)
>                  . = ALIGN(8);   /* For convenience during zeroing */
>                  _ebss = .;
>

On 7/17/24 7:16 PM, Ard Biesheuvel - ardb at kernel.org wrote:
> Please also share your kernel build config and the output of
>
> hexdump -C /sys/firmware/efi/efivars/MemoryOverwriteRequestControl-e20939be-32d4-41be-a150-897f85d49829

- nokaslr does not make a difference; it will still not boot
- linux 6.10 with the partial revert applied, as provided by*@loqs on the Arch forum thread, does not work either - the requested 
hexdump is: *00000000  07 00 00 00 00                                    |.....| 
00000005