Public bug reported:
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
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
** Affects: ubuntu-kernel-tests
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: 5.11 5.6 affects.dgx2 aws focal hwe oem sru-20210104 sru-20210315
sru-20210412 sru-20210531 ubuntu-ltp
** Tags added: 5.11 hwe sru-20210104 sru-20210315 sru-20210412
sru-20210531
** Tags added: 5.6 aws focal oem
** Tags added: affects.dgx2 ubuntu-ltp
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1931390
Title:
cpuhotplug03 in cpuhotplug from ubuntu_ltp failed after successful
CPU1 offline
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
New
Bug description:
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
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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