vmlinux buildid doesn't match the running one (/sys/kernel/notes)

[Francis Moreau <francis.moro@gmail.com>]

Hello,

I'm trying to use perf-probe, but it fails.

Basically it's due to the buildid of the running kernel (the one which
can be read from /sys/kernel/notes) and the one in vmlinx (which I
compiled my self).

I did this:

  $ make
  $ make modules_install install
  $ ls vmlinux
  vmlinux

reboot

  $ perf probe -k vmlinux -L schedule
  Failed to find path of kernel module.
  Failed to open debuginfo file.
  Error: Failed to show lines. (-2)

So my question is why the buildids doesn't match ?

I guess I did something wrong since it's pretty a standard use case
but I don't see why...

Thanks
-- 
Francis