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Re: aboot unzip "unknown compression method" on recent (post 6.4) kernels?



Hi Alex,

On Fri, 2024-11-22 at 23:56 -0800, Alex Winbow wrote:
>      I have been unable to boot kernels after 6.4; aboot fails with 
> "unzip: unknown compression method". Specifically:
> 
>          - vmlinuz-6.4.0-1-alpha-generic --> works
>          - vmlinuz-6.6.15-alpha-generic --> fails
>          - vmlinuz-6.11.6-alpha-generic --> fails
> 
>      This is on a XP1000 (EV67/Tsunami/Monet). aboot is 
> 1.0~pre20200212-1. FWIW, "gzip -l --verbose" says all kernels are 
> compressed with the same method:
> 
> $gzip -l --verbose vmlinuz-6*
> method  crc     date  time           compressed uncompressed  ratio 
> uncompressed_name
> defla 2ad47e09 Nov  4 13:57             7010635 24244720  71.1% 
> vmlinuz-6.11.6-alpha-generic
> defla 148fa7ac Jul 22 23:53             6814008 23614088  71.1% 
> vmlinuz-6.4.0-1-alpha-generic
> defla 30836626 Feb  4 12:28             7045662 24145360  70.8% 
> vmlinuz-6.6.15-alpha-generic
> 
>      Did something more subtle change in compression in between kernel 
> 6.4 and 6.6?

Maybe the kernel has become just too large for aboot to decompress it?

I am planning to work on aboot in the near future and bring the package
back into shape. I will also look into this particular issue then, so
thanks for reporting it.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913


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