Comment 0 for bug 2012695

Issue spotted on:
 * F-gcp 5.4.0-1102.111
 * F-gcp-5.15 5.15.0-1031.38~20.04.1
 * F-gke 5.4.0-1096.103
 * F-gke-5.15 5.15.0-1029.34~20.04.1

With n2d-standard-2 and n2d-standard-64 instances only.

Jammy 5.15 gcp / gke kernel does not have this issue.

This is not a regression, I can see this issue way back to sru-20220509, probably exists when we first add N2D instances to the pool.

Tests are not failing, but the return value is 1 due to warning issued (same as bug 2009943)

Output example:
INFO: Test start time: Sat Mar 4 00:54:03 UTC 2023
COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 18684 -n 18684 -f /tmp/ltp-3k5fq0dsFO/alltests -l /dev/null -C /dev/null -T /dev/null
LOG File: /dev/null
FAILED COMMAND File: /dev/null
TCONF COMMAND File: /dev/null
Running tests.......
tst_test.c:1526: TINFO: Timeout per run is 0h 00m 30s
tst_device.c:89: TINFO: Found free device 5 '/dev/loop5'
ioctl_loop01.c:85: TPASS: /sys/block/loop5/loop/partscan = 0
ioctl_loop01.c:86: TPASS: /sys/block/loop5/loop/autoclear = 0
ioctl_loop01.c:87: TPASS: /sys/block/loop5/loop/backing_file = '/tmp/ltp-3k5fq0dsFO/ioceZc4p8/test.img'
ioctl_loop01.c:57: TPASS: get expected lo_flag 12
ioctl_loop01.c:59: TPASS: /sys/block/loop5/loop/partscan = 1
ioctl_loop01.c:60: TPASS: /sys/block/loop5/loop/autoclear = 1
ioctl_loop01.c:69: TPASS: access /dev/loop5p1 succeeds
ioctl_loop01.c:75: TPASS: access /sys/block/loop5/loop5p1 succeeds
ioctl_loop01.c:91: TINFO: Test flag can be clear
ioctl_loop01.c:57: TPASS: get expected lo_flag 8
ioctl_loop01.c:59: TPASS: /sys/block/loop5/loop/partscan = 1
ioctl_loop01.c:60: TPASS: /sys/block/loop5/loop/autoclear = 0
ioctl_loop01.c:69: TPASS: access /dev/loop5p1 succeeds
ioctl_loop01.c:75: TPASS: access /sys/block/loop5/loop5p1 succeeds
tst_device.c:255: TWARN: ioctl(/dev/loop5, LOOP_CLR_FD, 0) no ENXIO for too long

Summary:
passed 13
failed 0
broken 0
skipped 0
warnings 1
INFO: ltp-pan reported some tests FAIL
LTP Version: 20220527
INFO: Test end time: Sat Mar 4 00:54:14 UTC 2023

Affected test cases are:
 * ioctl_loop01
 * ioctl_loop03
 * ioctl_loop04
 * ioctl_loop05
 * ioctl_loop06
 * ioctl_loop07
 * lchown03
 * lchown03_16
 * linkat02
 * mknod07
 * mknodat02
 * mount01
 * mount04
 * mount06