[Bug 1809699] Missing required logs.

This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1809699

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1809699

Title:
cpu_hot_plug test in ubuntu_kernel_selftest always return 0 on Xenial

Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Incomplete

Bug description:
This test will always return PASSED even if there are some failures
there, commit 8fe6e53a8ed5f0 can fix this issue:

$ sudo make -C linux/tools/testing/selftests TARGETS=cpu-hotplug run_tests
make: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests'
for TARGET in cpu-hotplug; do \
make -C $TARGET; \
done;
make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/cpu-hotplug'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/cpu-hotplug'
for TARGET in cpu-hotplug; do \
make -C $TARGET run_tests; \
done;
make[1]: Entering directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/cpu-hotplug'
pid 25001's current affinity mask: 3
pid 25001's new affinity mask: 1
CPU online/offline summary:
Cpus in online state: 0-1
Cpus in offline state: 2
Limited scope test: one hotplug cpu
(leaves cpu in the original state):
online to offline to online: cpu 1
offline to online to offline: cpu 2
./cpu-on-off-test.sh: line 78: /sys/devices/system/cpu/cpu2/online: No such file or directory
online_cpu_expect_success 2: unexpected fail
./cpu-on-off-test.sh: line 83: /sys/devices/system/cpu/cpu2/online: No such file or directory
offline_cpu_expect_success 2: unexpected fail
selftests: cpu-on-off-test.sh [PASS]
make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/cpu-hotplug'
make: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests'

For Trusty, it's missing another 20 commits to reach 8fe6e53:
4813d2e736 (tools: memory-hotplug fix unexpected operator error)
ddddda9bc4 (tools: selftests - create a separate hotplug target for full range test)
a88cc108f6 (lib: Export interval_tree)
93e9ef83f4 (test: add minimal module for verification testing)
3e2a4c183a (test: check copy_to/from_user boundary validation)
64a8946b44 (net: filter: BPF testsuite)
7069a97a14 (selftests/net: move test out of Makefile into a shell script)
3c25fa14f0 (selftests/user: move test out of Makefile into a shell script)
24fe831c17 (tools/testing/selftests/sysctl: validate sysctl_writes_strict)
0a8adf5847 (test: add firmware_class loader test)
6e68e6c5e4 (ftracetest: Initial commit for ftracetest)
4f5ce5e8d7 (selftests: add memfd_create() + sealing tests)
c9b26b81af (syscalls: add selftest for execveat(2))
3ce51050fa (selftest: size: Add size test for Linux kernel) backport with context arrangement
87b2d44026 (selftests: add memfd/sealing page-pinning tests)
498b473af9 (tools: selftests: fix build issue with make kselftests target)
ce6a144a0d (selftests/memfd: Run test on all architectures)
5e29a9105b (selftests: Introduce minimal shared logic for running tests)
cc16782169 (selftests: change cpu on-off-test.sh name to be unique)
8c749ce93e (selftests: create test-specific kconfig fragments)
8fe6e53a8e (selftests/cpu-hotplug: exit with failure when test occured unexpected behaviors)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-141-generic 4.4.0-141.167
ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162
Uname: Linux 4.4.0-141-generic s390x
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: s390x
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
CurrentDmesg:

Date: Mon Dec 24 04:08:18 2018
HibernationDevice: RESUME=UUID=ca468a9c-9563-442c-85c6-6055e800a66e
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lspci:

Lsusb: Error: command ['lsusb'] failed with exit code 1:
PciMultimedia:

ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
ProcKernelCmdLine: root=UUID=b65b756a-ba4e-4c53-aa32-0db2bdb50bb3 crashkernel=196M
RelatedPackageVersions:
linux-restricted-modules-4.4.0-141-generic N/A
linux-backports-modules-4.4.0-141-generic N/A
linux-firmware 1.157.21
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)

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