** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
** Changed in: ubuntu-power-systems
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1861379
Title:
Boot log is swamped with "debugfs: Directory 'imc' with parent
'powerpc' already present" messages on kernel 5.4
Status in The Ubuntu-power-systems project:
Fix Committed
Status in linux package in Ubuntu:
Fix Committed
Bug description:
== Comment: #0 - Kalpana Shetty <kalsh...@in.ibm.com> - 2020-01-29 22:46:37 ==
---Problem Description---
[Ubu 20.04][kernel-5.4.0-12-generic] debugfs: Directory 'imc' with parent
'powerpc' already present! lot of messages logged while booting
---uname output---
root@ltc-wcwsp3:~# uname -a Linux ltc-wcwsp3 5.4.0-12-generic #15-Ubuntu SMP
Tue Jan 21 17:56:24 UTC 2020 ppc64le ppc64le ppc64le GNU/Linux
Machine Type = Witherspoon DD2.3
Test Environment:
Hardware: Witherspoon-DD2.3
Ubuntu 20.04
kernel: 5.4.0-12-generic #15-Ubuntu
Steps:
1. Install Ubu 20.4
2. reboot the system and seen lot of imc related messages thrown on screen
while booting
Console screen snippet...
SIGTERM received, booting...
[ 24.812366] kexec_core: Starting new kernel
[ 1.852437] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.852538] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.852642] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.852727] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.852807] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.852895] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.852969] debugfs: Directory 'imc' with parent 'powerpc' already present!
[ 1.853043] debugfs: Directory 'imc' with parent 'powerpc' already present!
....
....
OS booted successfully.
== Comment: #1 - Kalpana Shetty <kalsh...@in.ibm.com> - 2020-01-29
22:48:26 ==
== Comment: #2 - Kalpana Shetty <kalsh...@in.ibm.com> - 2020-01-29 22:55:18 ==
== Comment: #3 - Kalpana Shetty <kalsh...@in.ibm.com> - 2020-01-29 22:56:21 ==
== Comment: #7 - MAMATHA INAMDAR <mainam...@in.ibm.com> - 2020-01-30 00:44:27
==
Hello Canonical,
Please Integrate following patches to fix this issue
(In reply to comment #5)
>
>
> This patch is upstream accepted as git commit
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
> ?id=48e626ac85b43cc589dd1b3b8004f7f85f03544d
> ("powerpc/powernv: Avoid re-registration of imc debugfs directory")
>
> Thanks,
> Anju
> we may need this patch also:
> "[PATCH v2] powerpc/imc: Dont create debugfs files for cpu-less nodes"
> and
> which is now upstream accepted in the powerpc tree as git commit
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/
> ?h=next-test&id=41ba17f20ea835c489e77bd54e2da73184e22060
> -Anju
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