** Summary changed:

- efivarfs test in ubuntu_kernel_selftest failed on Xenial AMD64
+ efivarfs test in ubuntu_kernel_selftest failed on the second run with Xenial 
AMD64

** Description changed:

- The open(O_WRONLY) test in test_create_read failed with premission denied.
+ This seems to be an issue to the test case, if you run the test suite
+ twice, it will fail on the second run.
+ 
+ The first run will create the test file:
+ $ ll 
/sys/firmware/efi/efivars/test_create_read-210be57c-9849-4fc7-a635-e6382d1aec27
+ -rw------- 1 root root 0 Dec 24 07:16 
/sys/firmware/efi/efivars/test_create_read-210be57c-9849-4fc7-a635-e6382d1aec27
+ 
+ This is cause the open(O_WRONLY) test in test_create_read failed with 
premission denied on the second run.
  This issue can be reproduced with upstream kernel tree on Xenial as well.
- 
  
  $ sudo make -C linux/tools/testing/selftests TARGETS=efivarfs run_tests
  make: Entering directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests'
  for TARGET in efivarfs; do \
-       make -C $TARGET; \
+  make -C $TARGET; \
  done;
  make[1]: Entering directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/efivarfs'
  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/efivarfs'
  for TARGET in efivarfs; do \
-       make -C $TARGET run_tests; \
+  make -C $TARGET run_tests; \
  done;
  make[1]: Entering directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/efivarfs'
  --------------------
  running test_create
  --------------------
  ./efivarfs.sh: line 48: 
/sys/firmware/efi/efivars/test_create-210be57c-9849-4fc7-a635-e6382d1aec27: 
Permission denied
-   [PASS]
+   [PASS]
  --------------------
  running test_create_empty
  --------------------
  ./efivarfs.sh: line 65: 
/sys/firmware/efi/efivars/test_create_empty-210be57c-9849-4fc7-a635-e6382d1aec27:
 Permission denied
-   [PASS]
+   [PASS]
  --------------------
  running test_create_read
  --------------------
  open(O_WRONLY): Permission denied
-   [FAIL]
+   [FAIL]
  --------------------
  running test_delete
  --------------------
-   [PASS]
+   [PASS]
  --------------------
  running test_zero_size_delete
  --------------------
-   [PASS]
+   [PASS]
  --------------------
  running test_open_unlink
  --------------------
-   [PASS]
+   [PASS]
  --------------------
  running test_valid_filenames
  --------------------
-   [PASS]
+   [PASS]
  --------------------
  running test_invalid_filenames
  --------------------
-   [PASS]
+   [PASS]
  selftests: efivarfs.sh [FAIL]
  make[1]: Leaving directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/efivarfs'
  make: Leaving directory 
'/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests'
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-141-generic 4.4.0-141.167
  ProcVersionSignature: User Name 4.4.0-141.167-generic 4.4.162
  Uname: Linux 4.4.0-141-generic x86_64
  AlsaDevices:
-  total 0
-  crw-rw---- 1 root audio 116,  1 Dec 24 05:10 seq
-  crw-rw---- 1 root audio 116, 33 Dec 24 05:10 timer
+  total 0
+  crw-rw---- 1 root audio 116,  1 Dec 24 05:10 seq
+  crw-rw---- 1 root audio 116, 33 Dec 24 05:10 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CurrentDmesg:
-  [92859.670497] smpboot: CPU 111 is now offline
-  [92859.723040] kvm: disabled by bios
-  [92859.750562] smpboot: Booting Node 1 Processor 111 APIC 0x7d
-  [92859.821706] kvm: disabled by bios
+  [92859.670497] smpboot: CPU 111 is now offline
+  [92859.723040] kvm: disabled by bios
+  [92859.750562] smpboot: Booting Node 1 Processor 111 APIC 0x7d
+  [92859.821706] kvm: disabled by bios
  Date: Tue Dec 25 06:30:01 2018
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lsusb:
-  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
-  Bus 001 Device 003: ID 0b1f:03e9 Insyde Software Corp. 
-  Bus 001 Device 002: ID 0000:0001  
-  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+  Bus 001 Device 003: ID 0b1f:03e9 Insyde Software Corp.
+  Bus 001 Device 002: ID 0000:0001
+  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Intel Corporation S2600WFT
  PciMultimedia:
-  
+ 
  ProcFB: 0 astdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-141-generic.efi.signed 
root=UUID=e93f24ed-4e90-4ccb-ba6d-f3b97fe0436f ro console=ttyS0,115200n8
  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
+  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)
  dmi.bios.date: 11/29/2016
  dmi.bios.vendor: Intel Corporation
  dmi.bios.version: SE5C620.86B.01.00.0336.112920161700
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: S2600WFT
  dmi.board.vendor: Intel Corporation
  dmi.board.version: H48104-410
  dmi.chassis.asset.tag: ....................
  dmi.chassis.type: 23
  dmi.chassis.vendor: ...............................
  dmi.chassis.version: ..................
  dmi.modalias: 
dmi:bvnIntelCorporation:bvrSE5C620.86B.01.00.0336.112920161700:bd11/29/2016:svnIntelCorporation:pnS2600WFT:pvr....................:rvnIntelCorporation:rnS2600WFT:rvrH48104-410:cvn...............................:ct23:cvr..................:
  dmi.product.name: S2600WFT
  dmi.product.version: ....................
  dmi.sys.vendor: Intel Corporation

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https://bugs.launchpad.net/bugs/1809704

Title:
  efivarfs test in ubuntu_kernel_selftest failed on the second run with
  Xenial AMD64

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