Dear Marco and others,

I will do a test build using ZSTD and see if that works. - I think the first thing I did was to switch back to XZ when this first happened Yesterday.

I've been using XZ for module compression since it was available, I just select it using make menuconfig I'm not using anything other than a slight tweek to the debian build. I don't use signing as my UEFI allows me not to, the only other thing I do different to Debian is to build in USB support, filesystem support for ext4 and BTRFS and build in SCSI, LIBATA so that should my initrd fail for any reason I'm not left high and dry with no keyboard support and no access to a filesystem. I used to build in networking support, but I only do that systems that I use for firewalling as systemd won't allow networking unless everything else is mostly perfect.

I started using module compression for net boot thin clients as it made the resulting initrd way quicker to load over TFTP. Later on I switched to using it on all my systems as it made the boot process much quicker.

Finally I found that on recent 6.x kernels it was required due to a size limit that seemed to appear initrd. I'm not sure what makes this limit, it's there in grub and refind.

If what you say is true then kmod might have been masking a kernel bug for the last year.

I'm not doing anything clever here, I just get my source from cdn.kernel.org, use make menuconfig or vim to edit the .config and make -j8 && make -j8 modules_install && make install then reboot.
I'm not applying any patches, I do used the NVIDIA drivers on some boxes.

Jon


On 27/08/2023 02:10, Marco d'Itri wrote:
On Aug 26, Jon Westgate <0...@fsck.tv> wrote:

The error message it gave was "decompresson failed with status 6"
Status 6 is XZ_OPTIONS_ERROR, which means "Input was encoded with
settings that are not supported by this XZ decoder".
So it looks like you have compressed the modules (how?) with XZ settings
which are supported by the userspace loader but not by the kernel one.


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