ubuntu_ltp:mm:ksm01(_1): pages_volatile is not 0 but 1

[Stefan Bader]

Only seen on one of the instances of arm64 generic-64k flavour: appleton-kernel

Both ksm01 and ksm01_1 fail on:

mem.c:251: TFAIL: pages_volatile is not 0 but 1.

[Krzysztof Kozlowski (krzk)]

Found also on 2021.11.08/bionic/linux-azure-4.15/4.15.0-1127.140/ instance Standard_D4a_v4-gen2:

Test: ksm03

18097 16:53:25 DEBUG| [stdout] ksm_helper.c:36: TINFO: ksm daemon takes 1s to run two full scans
18098 16:53:25 DEBUG| [stdout] mem.c:261: TINFO: check!
18099 16:53:25 DEBUG| [stdout] mem.c:254: TPASS: run is 1.
18100 16:53:25 DEBUG| [stdout] mem.c:254: TPASS: pages_shared is 1.
18101 16:53:25 DEBUG| [stdout] mem.c:254: TPASS: pages_sharing is 98302.
18102 16:53:25 DEBUG| [stdout] mem.c:252: TFAIL: pages_volatile is not 0 but 1.
18103 16:53:25 DEBUG| [stdout] mem.c:254: TPASS: pages_unshared is 1.
18104 16:53:25 DEBUG| [stdout] mem.c:254: TPASS: sleep_millisecs is 0.
18105 16:53:25 DEBUG| [stdout] mem.c:254: TPASS: pages_to_scan is 98304.

[Stefan Bader (smb)]

Re-appeared once on dryden(ppc64el) mm:ksm03_1 for focal:linux-hwe-5.13-5.13.0-41.46~20.04.1

[Kleber Sacilotto de Souza (kleber-souza)]

Found on thiel(ppc64el) with impish:linux 5.13.0-41.46 on testcase ubuntu_ltp.mm:ksm04_1.