The header starts with 'zstd', not 'zstd22':
$ ukify build --linux vmlinuz-6.13+unreleased-cloud-arm64 --initrd /boot/initrd.img-6.12.12-amd64 --output uki
Kernel version not specified, starting autodetection 😖.
Real-Mode Kernel Header magic not found
+ readelf --notes vmlinuz-6.13+unreleased-cloud-arm64
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
Traceback (most recent call last):
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 2510, in <module>
main()
~~~~^^
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 2499, in main
make_uki(opts)
~~~~~~~~^^^^^^
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 1328, in make_uki
opts.uname = Uname.scrape(linux, opts=opts)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 384, in scrape
version = func(filename, opts=opts)
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 374, in scrape_generic
text = maybe_decompress(filename)
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 221, in maybe_decompress
return get_zboot_kernel(f)
File "/home/bluca/git/systemd/src/ukify/ukify.py", line 201, in get_zboot_kernel
raise NotImplementedError(f'unknown compressed type: {comp_type!r}')
NotImplementedError: unknown compressed type: b'zstd\x00\x00'
Luca Boccassi
a6d51ae582