[Bug 1931390] Re: cpuhotplug03 in cpuhotplug from ubuntu_ltp failed after successful CPU1 offline

2021-12-23 Thread Po-Hsu Lin
This issue can be found on F-AWS 5.13.0-1008.9~20.04.2 with instance
c6g.8xlarge, it's a bit flaky on it.

Running tests...
Name:   cpuhotplug03
Date:   Thu Dec 23 09:14:59 UTC 2021
Desc:   Do tasks get scheduled to a newly on-lined CPU?

CPU is 1
USER PID %CPU %MEMVSZ   RSS TTY  STAT START   TIME COMMAND
root  758483  0.0  0.0   2052   516 ?R09:14   0:00 /bin/sh 
/opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
root  758484  0.0  0.0   2052   480 ?R09:14   0:00 /bin/sh 
/opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
...
  3 /bin/sh /opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
 21 /bin/sh /opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
 21 /bin/sh /opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
cpuhotplug03 1 TFAIL: No cpuhotplug_do_spin_loop processes found on 
CPU1
INFO: ltp-pan reported some tests FAIL
LTP Version: 20210927
INFO: Test end time: Thu Dec 23 09:15:01 UTC 2021


** Tags added: 5.13 sru-20211129

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Title:
  cpuhotplug03 in cpuhotplug from ubuntu_ltp failed after successful
  CPU1 offline

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[Bug 1931390] Re: cpuhotplug03 in cpuhotplug from ubuntu_ltp failed after successful CPU1 offline

2021-06-09 Thread Krzysztof Kozlowski
Failure from: 5.11.0-1005.5-intel/focal-linux-intel-intel-amd64-5.11.0
-spitfire-
ubuntu_ltp/ubuntu_ltp/results/ubuntu_ltp.cpuhotplug/debug/ubuntu_ltp.cpuhotplug.DEBUG.html

** Attachment added: "cpuhotplug03-failure-log.txt"
   
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1931390/+attachment/5503485/+files/cpuhotplug03-failure-log.txt

** Description changed:

  In cpuhotplug (ubuntu_ltp) tests, offline and online of CPU1 succeeds,
  but later the test fails with:
  
+ utils:0153| [stdout] Name: cpuhotplug03
+ utils:0153| [stdout] Date: Wed Jun 9 03:52:16 UTC 2021
+ utils:0153| [stdout] Desc: Do tasks get scheduled to a newly on-lined CPU?
+ utils:0153| [stdout]
+ utils:0153| [stdout] CPU is 1
+ utils:0153| [stdout] USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
+ utils:0153| [stdout] root 858611 0.0 0.0 2616 540 ? R 03:52 0:00 /bin/sh 
/opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
+ ...
+ ...
+ ...
  utils:0153| [stdout] 49 /bin/sh /opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
  utils:0153| [stdout] 82 /bin/sh /opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
  utils:0153| [stdout] 18 /bin/sh /opt/ltp/testcases/bin/cpuhotplug_do_spin_loop
  utils:0153| [stdout] cpuhotplug03 1 TFAIL: No cpuhotplug_do_spin_loop 
processes found on CPU1
  utils:0153| [stdout] tag=cpuhotplug03 stime=1623210736 dur=3 exit=exited 
stat=1 core=no cu=22260 cs=78
  
- Reported previous as part of lp:1836167
- 
+ IMPORTANT: The CPU1 got properly offlined and onlined. For failures of
+ CPU1 offline, please see lp:1836167 (reported previously as part of
+ lp:1836167).
  
  Po-Hsu Lin (cypressyew) wrote on 2020-09-25:
  On F-oem-5.6 with node glameow:
  cpuhotplug03 1 TFAIL: No cpuhotplug_do_spin_loop processes found on CPU1
  
  Kelsey Skunberg (kelsey-skunberg) wrote on 2020-10-06:
  spotted on Focal aws : 5.4.0-1026.26 : amd64
  cpuhotplug03 1 TFAIL: No cpuhotplug_do_spin_loop processes found on CPU1
  
  Po-Hsu Lin (cypressyew) wrote on 2021-06-09:
  Found on 5.11.0-1005.5 - intel
  Node spitfire, passed on node bavor.
  cpuhotplug03 1 TFAIL: No cpuhotplug_do_spin_loop processes found on CPU1

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Title:
  cpuhotplug03 in cpuhotplug from ubuntu_ltp failed after successful
  CPU1 offline

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