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btfhub-archive does not contain BTF for kernel modules #7

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brycekahle opened this issue Jan 23, 2024 · 2 comments
Closed
3 tasks

btfhub-archive does not contain BTF for kernel modules #7

brycekahle opened this issue Jan 23, 2024 · 2 comments

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@brycekahle
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brycekahle commented Jan 23, 2024 •
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The archive currently only contains the kernel/vmlinux BTF for each kernel version. In order to utilize CO-RE on kernel module functions, we need BTF for each kernel module as well.

Checklist for full support:

  • archive contains BTF for kernel modules
  • loader supports providing vmlinux and kmod BTF. cilium/ebpf PR, btfhub already supports.
  • minimization of kmod BTF is possible. Working on it here (on mailing list soon).
@brycekahle
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In order to mirror the sysfs-provided BTF, I will be changing the vmlinux BTF name within each archive from the uname -r value to vmlinux. This will be a breaking change.

@brycekahle brycekahle mentioned this issue Jan 23, 2024
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@brycekahle
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Fixed in DataDog/btfhub-archive#3

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