Public bug reported:

The test will pass even with stress-ng complaining about "No space left
on device", not sure if this is an expected behaviour, but it might be
confusing to testers.

 stress-ng: info:  [36588] dispatching hogs: 2 hdd, 2 lockf, 2 seek, 2 aio, 2 
dentry, 2 dir, 2 fallocate, 2 fstat, 2 lease, 2 open, 2 rename, 2 chdir, 2 
rename
 stress-ng: fail:  [36609] stress-ng-chdir: mkdir failed, errno=28 (No space 
left on device)
 stress-ng: fail:  [36623] stress-ng-chdir: mkdir failed, errno=28 (No space 
left on device)
 stress-ng: fail:  [36611] stress-ng-hdd: read failed, errno=28 (No space left 
on device)
 stress-ng: error: [36588] process 36611 (stress-ng-hdd) terminated with an 
error, exit status=1 (stress-ng core failure)
 stress-ng: error: [36588] process [36609] (stress-ng-chdir) aborted early, out 
of system resources
 stress-ng: error: [36588] process [36623] (stress-ng-chdir) aborted early, out 
of system resources
 stress-ng: info:  [36588] unsuccessful run completed in 14.35s
 stress-ng: info:  [36588] stressor       bogo ops real time  usr time  sys 
time   bogo ops/s   bogo ops/s
 stress-ng: info:  [36588]                           (secs)    (secs)    (secs) 
  (real time) (usr+sys time)
 stress-ng: info:  [36588] hdd               16391      7.39      0.44      
6.44      2218.21      2382.41
 stress-ng: info:  [36588] lockf            131604     10.16      0.05     
12.43     12947.00     10545.19
 stress-ng: info:  [36588] seek            1987284     10.17      1.33     
10.40    195448.06    169418.93
 stress-ng: info:  [36588] aio                2496     10.15      0.00      
0.00       245.83         0.00
 stress-ng: info:  [36588] dentry              171     10.42      0.00      
0.61        16.41       280.33
 stress-ng: info:  [36588] dir                2539     14.09      0.00     
15.40       180.14       164.87
 stress-ng: info:  [36588] fallocate           170     10.17      0.04      
5.35        16.71        31.54
 stress-ng: info:  [36588] fstat              2147     10.00      0.02      
0.26       214.64      7667.86
 stress-ng: info:  [36588] lease                66     10.14      0.61      
5.15         6.51        11.46
 stress-ng: info:  [36588] open            1434208     10.11      0.44     
12.20    141807.28    113465.82
 stress-ng: info:  [36588] rename             6526     10.01      0.00      
2.94       651.86      2219.73
 stress-ng: info:  [36588] rename             6820     10.00      0.00      
2.49       681.85      2738.96
 stress-ng: info:  [36588] for a 14.35s run time:
 stress-ng: info:  [36588]     114.80s available CPU time
 stress-ng: info:  [36588]       3.05s user time   (  2.66%)
 stress-ng: info:  [36588]      75.50s system time ( 65.77%)
 stress-ng: info:  [36588]      78.55s total time  ( 68.43%)
 stress-ng: info:  [36588] load average: 17.49 10.98 4.90
 Stress-ng stressor failed, error: 2
 umounting vfat /mnt/vfat-test-29590
 umounting tmpfs /mnt/vfat-test-29590
 
================================================================================
  
 Completed
  
 Kernel issues: NONE

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-139-generic 4.4.0-139.165
ProcVersionSignature: Ubuntu 4.4.0-139.165-generic 4.4.160
Uname: Linux 4.4.0-139-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: Fri Nov  2 08:20:40 2018
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=44b0b919-a1a4-4849-9425-e71d4ac87d85 
crashkernel=196M nobp=1 BOOT_IMAGE=0
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-139-generic N/A
 linux-backports-modules-4.4.0-139-generic  N/A
 linux-firmware                             1.157.20
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: stress-ng
     Importance: Undecided
         Status: New

** Affects: ubuntu-kernel-tests
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: apport-bug package-from-proposed s390x xenial

** Also affects: stress-ng
   Importance: Undecided
       Status: New

** Also affects: ubuntu-kernel-tests
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1801347

Title:
  ubuntu_vfat_stress will pass even with error reported by stress-ng

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