This bug was fixed in the package linux - 6.14.0-15.15

---------------
linux (6.14.0-15.15) plucky; urgency=medium

  * plucky/linux: 6.14.0-15.15 -proposed tracker (LP: #2106239)

  * Enabling GENDWARFKSYMS breaks loading modules (LP: #2103771)
    - [Packaging] Bump pahole build-dep

  * BMG: support additional PCI ID (LP: #2105768)
    - SAUCE: drm/xe/bmg: Add one additional PCI ID

  * Missing bpftool binary on riscv64 (LP: #2106091)
    - [Packaging] Build bpftool and linux-perf on riscv64
    - [Packaging] Allow binary-debs target without enabling
      do_flavour_image_package
    - [Packaging] Fix bpftool, linux-perf packaging in binary-perarch

 -- Paolo Pisati <paolo.pis...@canonical.com>  Sun, 06 Apr 2025 14:36:36
+0200

** Changed in: linux (Ubuntu Plucky)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2104297

Title:
  not able to install a Power9 bare metal with Ubuntu 25.04 Plucky

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Plucky:
  Fix Released

Bug description:
  [ Impact ]

  In ppc64el kernels, loading modules without any
  __patchable_function_entries section would fail due to a
  zero size allocation of executable memory for ftrace trampolines.
  This causes boot failures when trying to boot the kernel on IBM Power 9
  systems. In particular becasue IBM Power 9 tries to load i40e at boot
  time, which fails.

  The bug was introduced by commit eec37961a56a which landed in v6.13-rc1,
  which assumed all modules have traceable functions.

  [ Fix ]

  Apply the following patch:
  - 
https://lore.kernel.org/all/wlscshbqan2svtqkz5xc6v47tzndfnsvge7h4lbfn67zoplekl@elt2oxwhrp6f/T/
  which has not landed in linux-next yet.

  [ Test Plan ]

  Compile and boot test the kernel on a Power 9 bare metal machine.

  [ Where problems could occur ]

  The patch simply removes an if branch which handles (incorrectly) errors 
during
  module loading on ppc64 systems. The regression potential therefore is
  very low.

  -----

  Not able to netboot install a Power9 bare metal. It fails because it
  is not detecting network, after that the system goes to shell/busybox

  ```
  Begin: Waiting up to 180 secs for any network device to become available ... 
Failure: Network device did not appear in time
  done.
  dhcpcd-10.1.0 starting
  dev: loaded udev
  [  188.277865] 8021q: 802.1Q VLAN Support v1.8
  no valid interfaces found
  exiting due to oneshot
  aborting as link detection is disabled
  Sleeping 30 seconds before retrying getting a DHCP lease
  dhcpcd-10.1.0 starting
  dev: loaded udev
  no valid interfaces found
  exiting due to oneshot
  aborting as link detection is disabled
  dhcpcd exited
  Sleeping 60 seconds before retrying getting a DHCP lease
  dhcpcd-10.1.0 starting
  dev: loaded udev
  no valid interfaces found
  exiting due to oneshot
  aborting as link detection is disabled
  dhcpcd exited
  Sleeping 90 seconds before retrying getting a DHCP lease
  dhcpcd-10.1.0 starting
  dev: loaded udev
  no valid interfaces found
  exiting due to oneshot
  aborting as link detection is disabled
  dhcpcd exited
  Sleeping 120 seconds before retrying getting a DHCP lease

  BusyBox v1.37.0 (Ubuntu 1:1.37.0-4ubuntu1) built-in shell (ash)
  Enter 'help' for a list of built-in commands.

  (initramfs)
  ```

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