Boot log is swamped with "debugfs: Directory 'imc' with parent 'powerpc' already present" messages on kernel 5.4
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
The Ubuntu-power-systems project |
Fix Released
|
High
|
Ubuntu on IBM Power Systems Bug Triage | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Canonical Kernel Team |
Bug Description
== Comment: #0 - Kalpana Shetty <email address hidden> - 2020-01-29 22:46:37 ==
---Problem Description---
[Ubu 20.04][
---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 <email address hidden> - 2020-01-29 22:48:26 ==
== Comment: #2 - Kalpana Shetty <email address hidden> - 2020-01-29 22:55:18 ==
== Comment: #3 - Kalpana Shetty <email address hidden> - 2020-01-29 22:56:21 ==
== Comment: #7 - MAMATHA INAMDAR <email address hidden> - 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:/
> ?id=48e626ac85b
> ("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:/
> ?h=next-
> -Anju
affects: | kernel-package (Ubuntu) → linux (Ubuntu) |
Changed in ubuntu-power-systems: | |
status: | New → Triaged |
importance: | Undecided → High |
assignee: | nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) |
Changed in linux (Ubuntu): | |
assignee: | Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Canonical Kernel Team (canonical-kernel-team) |
summary: |
- [Ubu 20.04][kernel-5.4.0-12-generic] debugfs: Directory 'imc' with - parent 'powerpc' already present! lot of messages logged while booting + debugfs: Directory 'imc' with parent 'powerpc' already present, cuases a + lot of messages logged while booting |
summary: |
- debugfs: Directory 'imc' with parent 'powerpc' already present, cuases a + debugfs: Directory 'imc' with parent 'powerpc' already present, causes a lot of messages logged while booting |
summary: |
- debugfs: Directory 'imc' with parent 'powerpc' already present, causes a - lot of messages logged while booting + Boot log is swamped with "debugfs: Directory 'imc' with parent 'powerpc' + already present" messages on kernel 5.4 |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
Changed in ubuntu-power-systems: | |
status: | In Progress → Fix Committed |
Default Comment by Bridge