[SOLVED] Building 5.15 LTS kernel

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jwiz
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[SOLVED] Building 5.15 LTS kernel

Post by jwiz »

After configuring & building a custom 5.15 LTS kernel (from kerneL.org) using oldconfig, I've come across some ELF header warnings in syslog which seem to point nowhere:

Code: Select all

kernel: [    2.536037] Invalid ELF header magic: != ELF
kernel: [    2.536676] Invalid ELF header magic: != ELF
kernel: [    2.599269] raid6: avx2x4   gen() 32608 MB/s
kernel: [    2.655932] raid6: avx2x4   xor() 14433 MB/s
kernel: [    2.712598] raid6: avx2x2   gen() 37625 MB/s
kernel: [    2.769268] raid6: avx2x2   xor() 23184 MB/s
kernel: [    2.825949] raid6: avx2x1   gen() 31959 MB/s
kernel: [    2.882598] raid6: avx2x1   xor() 18512 MB/s
kernel: [    2.939282] raid6: sse2x4   gen() 15424 MB/s
kernel: [    2.995935] raid6: sse2x4   xor()  9054 MB/s
kernel: [    3.052598] raid6: sse2x2   gen() 15846 MB/s
kernel: [    3.109264] raid6: sse2x2   xor()  9670 MB/s
kernel: [    3.165932] raid6: sse2x1   gen() 13237 MB/s
kernel: [    3.222599] raid6: sse2x1   xor()  6561 MB/s
kernel: [    3.222599] raid6: using algorithm avx2x2 gen() 37625 MB/s
kernel: [    3.222600] raid6: .... xor() 23184 MB/s, rmw enabled
kernel: [    3.222601] raid6: using avx2x2 recovery algorithm
kernel: [    3.222741] Invalid ELF header magic: != ELF
kernel: [    3.229159] Invalid ELF header magic: != ELF
kernel: [    3.229726] xor: automatically using best checksumming function   avx       
kernel: [    3.229868] Invalid ELF header magic: != ELF
kernel: [    3.294238] Btrfs loaded, crc32c=crc32c-intel, zoned=yes, fsverity=yes
I'm a bit at a loss what to make of them, as I have build custom kernels on Debian 10/11 systems before and never run into these.
Any ideas how to further investigate?
Last edited by jwiz on Mon Oct 03, 2022 6:26 am, edited 1 time in total.
AscLinux
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Re: Building 5.15 LTS kernel

Post by AscLinux »

Boot with previous kernel to confirm it is kernel related.
I'd suspect filesystem corruption, have you checked it.
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jwiz
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Re: Building 5.15 LTS kernel

Post by jwiz »

It is definitvly kernel related as I don't get the ELF warnings with the standard LMDE 5.10 kernel.
I'm just at a loss where to start looking.
jwiz
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Re: [SOLVED] Building 5.15 LTS kernel

Post by jwiz »

After switching the loadable module compression mode from 'xz' back to 'none' the ELF header warnings disappeared.
Seems bugged to me.
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