cpuset_hotplug from controllers in ubuntu_ltp failed

[Po-Hsu Lin]

Issue found on node amaura:
<<<test_start>>>
tag=cpuset_hotplug stime=1561372131
cmdline="cpuset_hotplug_test.sh"
contacts=""
analysis=exit
<<<test_output>>>
incrementing stop
cpuset_hotplug 1 TFAIL: task's allowed list isn't expected.(Result: 0-15, Expect: 0-7)
cpuset_hotplug 3 TFAIL: task's allowed list isn't expected.(Result: 0-15, Expect: 0-7)
cpuset_hotplug 5 TPASS: Cpuset vs CPU hotplug test succeeded.
cpuset_hotplug 7 TFAIL: task's cpu allowed list isn't expected(Result: 0-15, Expect: 0-7).
cpuset_hotplug 9 TPASS: Cpuset vs CPU hotplug test succeeded.
cpuset_hotplug 11 TPASS: Cpuset vs CPU hotplug test succeeded.
<<<execution_status>>>
initiation_status="ok"
duration=1 termination_type=exited termination_id=1 corefile=no
cutime=19 cstime=81
<<<test_end>>>

Test script:
https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/controllers/cpuset/cpuset_hotplug_test/cpuset_hotplug_test.sh

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-22-generic 4.18.0-22.23
ProcVersionSignature: User Name 4.18.0-22.23-generic 4.18.20
Uname: Linux 4.18.0-22-generic x86_64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 1 Jun 24 10:25 seq
 crw-rw---- 1 root audio 116, 33 Jun 24 10:25 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.10-0ubuntu13.3
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Mon Jun 24 10:30:59 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
MachineType: Intel Corporation S1200RP
PciMultimedia:

ProcFB: 0 mgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-22-generic root=UUID=b0d2ae4e-12dd-423e-acea-272ee8b2a893 ro
RelatedPackageVersions:
 linux-restricted-modules-4.18.0-22-generic N/A
 linux-backports-modules-4.18.0-22-generic N/A
 linux-firmware 1.175.4
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/01/2015
dmi.bios.vendor: Intel Corp.
dmi.bios.version: S1200RP.86B.03.02.0003.070120151022
dmi.board.asset.tag: ....................
dmi.board.name: S1200RP
dmi.board.vendor: Intel Corporation
dmi.board.version: G62254-407
dmi.chassis.asset.tag: ....................
dmi.chassis.type: 17
dmi.chassis.vendor: ..............................
dmi.chassis.version: ..................
dmi.modalias: dmi:bvnIntelCorp.:bvrS1200RP.86B.03.02.0003.070120151022:bd07/01/2015:svnIntelCorporation:pnS1200RP:pvr....................:rvnIntelCorporation:rnS1200RP:rvrG62254-407:cvn..............................:ct17:cvr..................:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: S1200RP
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: ....................
dmi.sys.vendor: Intel Corporation

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Po-Hsu Lin (cypressyew)]

Failed on ARM64 Moonshot node with Operation Not Supported:

<<<test_start>>>
tag=cpuset_hotplug stime=1562841086
cmdline="cpuset_hotplug_test.sh"
contacts=""
analysis=exit
<<<test_output>>>
incrementing stop
cpuset_hotplug 1 TINFO: /bin/echo: write error: Operation not supported
cpuset_hotplug 1 TFAIL: CPU#1 failed.
cpuset_hotplug 3 TINFO: /bin/echo: write error: Operation not supported
cpuset_hotplug 3 TFAIL: setup test environment(offline CPU#1) failed
cpuset_hotplug 5 TINFO: /bin/echo: write error: Operation not supported
cpuset_hotplug 5 TFAIL: CPU#1 failed.
cpuset_hotplug 7 TINFO: /bin/echo: write error: Operation not supported
cpuset_hotplug 7 TFAIL: CPU#1 failed.
cpuset_hotplug 9 TINFO: /bin/echo: write error: Operation not supported
cpuset_hotplug 9 TFAIL: CPU#1 failed.
cpuset_hotplug 11 TINFO: /bin/echo: write error: Operation not supported
cpuset_hotplug 11 TFAIL: setup test environment(offline CPU#1) failed
<<<execution_status>>>
initiation_status="ok"
duration=4 termination_type=exited termination_id=1 corefile=no
cutime=20 cstime=162
<<<test_end>>>

[Po-Hsu Lin (cypressyew)]

Found on node "amaura" with Disco kernel.

[Sean Feole (sfeole)]

This bug is also found in linux-aws on Bionic,4.15.0-1057.59-aws

266. 12/05 10:33:23 DEBUG| utils:0153| [stdout] startup='Thu Dec 5 10:28:50 2019'
99267. 12/05 10:33:23 DEBUG| utils:0153| [stdout] cpuset_hotplug 1 TFAIL: task's allowed list isn't expected.(Result: 0-14, Expect: 0-1)
99268. 12/05 10:33:23 DEBUG| utils:0153| [stdout] cpuset_hotplug 3 TFAIL: task's allowed list isn't expected.(Result: 0-14, Expect: 0-1)
99269. 12/05 10:33:23 DEBUG| utils:0153| [stdout] cpuset_hotplug 5 TPASS: Cpuset vs CPU hotplug test succeeded.
99270. 12/05 10:33:23 DEBUG| utils:0153| [stdout] cpuset_hotplug 7 TFAIL: task's cpu allowed list isn't expected(Result: 0-14, Expect: 0-1).
99271. 12/05 10:33:23 DEBUG| utils:0153| [stdout] cpuset_hotplug 9 TPASS: Cpuset vs CPU hotplug test succeeded.
99272. 12/05 10:33:23 DEBUG| utils:0153| [stdout] cpuset_hotplug 11 TPASS: Cpuset vs CPU hotplug test succeeded.
99273. 12/05 10:33:23 DEBUG| utils:0153| [stdout] tag=cpuset_hotplug stime=1575541730 dur=1 exit=exited stat=1 core=no cu=17 cs=33
99274. 12/05 10:33:23 DEBUG| utils:0153| [stdout] startup='Thu Dec 5 10:28:52 2019'

[Po-Hsu Lin (cypressyew)]

Found on Focal KVM 5.4.0-1016.16

[Kelsey Steele (kelsey-steele)]

Spotted on Focal/linux-azure 5.4.0-1029.29

[Kleber Sacilotto de Souza (kleber-souza)]

Observed with focal/linux: 5.4.0-76.85.

[Krzysztof Kozlowski (krzk)]

Found on focal/aws-5.8 5.8.0-1036.38~20.04.1 (AWS instances: x1e.xlarge, m3.large). Also 5.8.0-1035-37~20.04.1.

[Krzysztof Kozlowski (krzk)]

The x1e.xlarge and m3.large AWS instances report 0-14 as possible CPUs (/sys/devices/system/cpu/possible) even though they have 4 or 2 CPUs respectively. This should be fixed with LTP commit 14797491f1cc ("cpuset_hotplug_test.sh: Fix bug for obtaining task_cpus value in root/generic_cpu_hotplut test").