Task for Linux set to won't fix as per Kamal's comment[1]:
Since dnotify has been obsolete for many years now, we would prefer not
to enable it in linux-kvm (if its only for the purpose of stress-ng
testing).
This will be addressed in the test suite instead.
[1] https://lists.ubuntu.com/archives/kernel-
team/2018-August/094737.html
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https://bugs.launchpad.net/bugs/1782723
Title:
dnotify in ubuntu_stress_smoke_test failed on KVM kernels
Status in ubuntu-kernel-tests:
In Progress
Status in linux-kvm package in Ubuntu:
Won't Fix
Bug description:
== Justification ==
In the Xenial 4.4 and Bionic 4.15 KVM kernel, the CONFIG_DNOTIFY was not set,
which is causing failures in the stress-ng dnotify test.
[stdout] dnotify FAILED
[stdout] stress-ng: debug: [3043] 2 processors online, 2 processors
configured
[stdout] stress-ng: info: [3043] dispatching hogs: 4 dnotify
[stdout] stress-ng: debug: [3043] cache allocate: reducing cache level from
L3 (too high) to L2
[stdout] stress-ng: debug: [3043] cache allocate: default cache size: 4096K
[stdout] stress-ng: debug: [3043] starting stressors
[stdout] stress-ng: debug: [3044] stress-ng-dnotify: started [3044]
(instance 0)
[stdout] stress-ng: debug: [3043] 4 stressors spawned
[stdout] stress-ng: fail: [3044] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: debug: [3046] stress-ng-dnotify: started [3046]
(instance 2)
[stdout] stress-ng: debug: [3047] stress-ng-dnotify: started [3047]
(instance 3)
[stdout] stress-ng: fail: [3044] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3046] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3044] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3046] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3046] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3046] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3046] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] info: 5 failures reached, aborting stress process
[stdout] stress-ng: debug: [3046] stress-ng-dnotify: exited [3046] (instance
2)
[stdout] stress-ng: fail: [3047] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3047] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3047] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3047] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3047] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] info: 5 failures reached, aborting stress process
[stdout] stress-ng: debug: [3047] stress-ng-dnotify: exited [3047] (instance
3)
[stdout] stress-ng: fail: [3044] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3044] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] info: 5 failures reached, aborting stress process
[stdout] stress-ng: debug: [3044] stress-ng-dnotify: exited [3044] (instance
0)
[stdout] stress-ng: error: [3043] process 3044 (stress-ng-dnotify)
terminated with an error, exit status=1 (stress-ng core failure)
[stdout] stress-ng: debug: [3043] process [3044] terminated
[stdout] stress-ng: debug: [3045] stress-ng-dnotify: started [3045]
(instance 1)
[stdout] stress-ng: fail: [3045] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3045] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3045] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3045] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] stress-ng: fail: [3045] stress-ng-dnotify: fcntl F_NOTIFY failed,
errno=22 (Invalid argument)
[stdout] info: 5 failures reached, aborting stress process
[stdout] stress-ng: debug: [3045] stress-ng-dnotify: exited [3045] (instance
1)
[stdout] stress-ng: error: [3043] process 3045 (stress-ng-dnotify)
terminated with an error, exit status=1 (stress-ng core failure)
[stdout] stress-ng: debug: [3043] process [3045] terminated
[stdout] stress-ng: error: [3043] process 3046 (stress-ng-dnotify)
terminated with an error, exit status=1 (stress-ng core failure)
[stdout] stress-ng: debug: [3043] process [3046] terminated
[stdout] stress-ng: error: [3043] process 3047 (stress-ng-dnotify)
terminated with an error, exit status=1 (stress-ng core failure)
[stdout] stress-ng: debug: [3043] process [3047] terminated
[stdout] stress-ng: info: [3043] unsuccessful run completed in 0.01s
== Fix ==
UBUNTU: kvm: [Config] enable CONFIG_DNOTIFY
== Test ==
The dnotify test in stress-ng will pass with this patch applied.
Test kernel could be found here:
http://people.canonical.com/~phlin/kernel/lp-1782723-dnotify/
== Regression Potential ==
Minimal.
No code changes, just a config change.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-1016-kvm 4.15.0-1016.16
ProcVersionSignature: User Name 4.15.0-1016.16-kvm 4.15.18
Uname: Linux 4.15.0-1016-kvm x86_64
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
Date: Fri Jul 20 08:11:19 2018
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: linux-kvm
UpgradeStatus: No upgrade log present (probably fresh install)
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