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feat(kernel): enable CONFIG_FPROBE - #4281

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tormath1 merged 1 commit into
flatcar:mainfrom
RiRa12621:main
Sep 21, 2026
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tormath1 merged 1 commit into
flatcar:mainfrom
RiRa12621:main

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@RiRa12621

@RiRa12621 RiRa12621 commented Sep 16, 2026 •

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enable CONFIG_FPROBE

Certain ebpf related networking tools like pwru require this to be true. There should be close to no impact from enabling it

How to use

  • Validate config set in built image
localhost ~ # zcat /proc/config.gz | grep CONFIG_FPROBE
CONFIG_FPROBE=y
`CONFIG_FPROBE_EVENTS=y
  • Optionally, validate by running pwru with the kprobe-multi backend and confirming that it starts successfully.

Testing done

Fresh build:

core@localhost ~ $ sudo zcat /proc/config.gz | grep CONFIG_FPROBE
CONFIG_FPROBE=y
CONFIG_FPROBE_EVENTS=y

Certain ebpf related networking tools require this to be true

Signed-off-by: Rick Rackow <[email protected]>
Signed-off-by: rrackow <[email protected]>

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Thanks!

@tormath1
tormath1 merged commit 5a40e9e into flatcar:main Sep 21, 2026
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@github-project-automation github-project-automation Bot moved this from ✅ Testing / in Review to Implemented in Flatcar tactical, release planning, and roadmap Sep 21, 2026
@tormath1

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Cherry-picked to:

  • flatcar-4820
  • flatcar-4790
  • flatcar-4757

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