Fix objtool checksum error by adding libxxhash-dev to build dependencies #4099
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LGTM |
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Could this affect building older kernel versions? @umfranci |
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No, it should not affect older kernels - I ran a couple of tests with a month-old commits and they worked as expected. Plus it is just an addition of a package, so it should be alright. |
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The objtool --checksum feature introduced for live‑patch builds requires libxxhash with XXH3 (≥ 0.8.0). Without this, builds fail with:
This PR adds libxxhash-dev to the build dependencies to ensure checksum generation works correctly and prevents the said error during kernel module installation.
Refer: https://lkml.org/lkml/2025/10/17/1516