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[Bug 1768452] Re: Insert test_bpf module will report 4 failures for ubuntu_bpf_jit on X s390x

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** Description changed:

+ == SRU Justification ==
+ In the ubuntu_bpf_jit test, it will insert the test_bpf module to perform the test. There will be 4 failures reported on s390x instances by the test, 3 of them were simply because they cannot be jited:
+   * test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096 
+   * test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096 
+   * test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
+ 
+ (For another failure please check bug 1868243)
+ 
+ == Fix ==
+ * 3203c901 (test_bpf: flag tests that cannot be jited on s390)
+ This patch needs to be backported to Xenial as some test case does not exist.
+ 
+ == Test == 
+ Test kernel could be found here: 
+ https://people.canonical.com/~phlin/kernel/lp-1768452-bpf-jit/
+ 
+ The test will be marked as pass with the patched kernel:
+ test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations PASS
+ test_bpf: #244 BPF_MAXINSNS: Call heavy transformations PASS
+ test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id PASS
+ 
+ == Regression Potential ==
+ Low, change limited to the test_bpf module itself, no impact to real functions.
+ 
+ == Original Bug Report ==
  After the test_bpf insert issue for Xenial was fixed in bug 1765698
  
  But it looks like the s390x needs some extra work.
  $ sudo modprobe test_bpf
  modprobe: ERROR: could not insert 'test_bpf': Invalid argument
  
  4 tests failed here:
-   test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096
-   test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096
-   test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
-   test_bpf: #250 BPF_MAXINSNS: ld_abs+vlan_push/pop FAIL to select_runtime err=-524
+   test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096
+   test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096
+   test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
+   test_bpf: #250 BPF_MAXINSNS: ld_abs+vlan_push/pop FAIL to select_runtime err=-524
  
  Complete test result:
  https://pastebin.ubuntu.com/p/zMDwVjwF7X/
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-123-generic 4.4.0-123.147
  ProcVersionSignature: Ubuntu 4.4.0-123.147-generic 4.4.128
  Uname: Linux 4.4.0-123-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: 2.20.1-0ubuntu2.16
  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.
  Date: Wed May  2 03:45:22 2018
  HibernationDevice: RESUME=UUID=f578fa27-1d57-41c9-bb1d-7ff64c1c9345
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  PciMultimedia:
-  
+ 
  ProcEnviron:
-  TERM=xterm-256color
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm-256color
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: root=UUID=f26894a2-496d-4891-aa9a-f66344c77779 crashkernel=196M BOOT_IMAGE=0
  RelatedPackageVersions:
-  linux-restricted-modules-4.4.0-123-generic N/A
-  linux-backports-modules-4.4.0-123-generic  N/A
-  linux-firmware                             1.157.17
+  linux-restricted-modules-4.4.0-123-generic N/A
+  linux-backports-modules-4.4.0-123-generic  N/A
+  linux-firmware                             1.157.17
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

** Tags added: sru-20200316

** Changed in: linux (Ubuntu Xenial)
       Status: Confirmed => In Progress

** Changed in: ubuntu-kernel-tests
       Status: Triaged => In Progress

** Changed in: linux (Ubuntu)
       Status: Confirmed => Fix Released

** Description changed:

  == SRU Justification ==
  In the ubuntu_bpf_jit test, it will insert the test_bpf module to perform the test. There will be 4 failures reported on s390x instances by the test, 3 of them were simply because they cannot be jited:
-   * test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096 
-   * test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096 
-   * test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
+   * test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096
+   * test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096
+   * test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
  
  (For another failure please check bug 1868243)
  
  == Fix ==
  * 3203c901 (test_bpf: flag tests that cannot be jited on s390)
  This patch needs to be backported to Xenial as some test case does not exist.
  
- == Test == 
- Test kernel could be found here: 
+ == Test ==
+ Test kernel could be found here:
  https://people.canonical.com/~phlin/kernel/lp-1768452-bpf-jit/
  
  The test will be marked as pass with the patched kernel:
  test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations PASS
  test_bpf: #244 BPF_MAXINSNS: Call heavy transformations PASS
  test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id PASS
  
  == Regression Potential ==
- Low, change limited to the test_bpf module itself, no impact to real functions.
+ Low, change limited to the test_bpf module itself and specific to s390x, no impact to real functions.
  
  == Original Bug Report ==
  After the test_bpf insert issue for Xenial was fixed in bug 1765698
  
  But it looks like the s390x needs some extra work.
  $ sudo modprobe test_bpf
  modprobe: ERROR: could not insert 'test_bpf': Invalid argument
  
  4 tests failed here:
    test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096
    test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096
    test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
    test_bpf: #250 BPF_MAXINSNS: ld_abs+vlan_push/pop FAIL to select_runtime err=-524
  
  Complete test result:
  https://pastebin.ubuntu.com/p/zMDwVjwF7X/
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-123-generic 4.4.0-123.147
  ProcVersionSignature: Ubuntu 4.4.0-123.147-generic 4.4.128
  Uname: Linux 4.4.0-123-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: 2.20.1-0ubuntu2.16
  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.
  Date: Wed May  2 03:45:22 2018
  HibernationDevice: RESUME=UUID=f578fa27-1d57-41c9-bb1d-7ff64c1c9345
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  PciMultimedia:
  
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: root=UUID=f26894a2-496d-4891-aa9a-f66344c77779 crashkernel=196M BOOT_IMAGE=0
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-123-generic N/A
   linux-backports-modules-4.4.0-123-generic  N/A
   linux-firmware                             1.157.17
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1768452

Title:
  Insert test_bpf module will report 4 failures for ubuntu_bpf_jit on X
  s390x

Status in ubuntu-kernel-tests:
  In Progress
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Disco:
  Fix Released

Bug description:
  == SRU Justification ==
  In the ubuntu_bpf_jit test, it will insert the test_bpf module to perform the test. There will be 4 failures reported on s390x instances by the test, 3 of them were simply because they cannot be jited:
    * test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096
    * test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096
    * test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096

  (For another failure please check bug 1868243)

  == Fix ==
  * 3203c901 (test_bpf: flag tests that cannot be jited on s390)
  This patch needs to be backported to Xenial as some test case does not exist.

  == Test ==
  Test kernel could be found here:
  https://people.canonical.com/~phlin/kernel/lp-1768452-bpf-jit/

  The test will be marked as pass with the patched kernel:
  test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations PASS
  test_bpf: #244 BPF_MAXINSNS: Call heavy transformations PASS
  test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id PASS

  == Regression Potential ==
  Low, change limited to the test_bpf module itself and specific to s390x, no impact to real functions.

  == Original Bug Report ==
  After the test_bpf insert issue for Xenial was fixed in bug 1765698

  But it looks like the s390x needs some extra work.
  $ sudo modprobe test_bpf
  modprobe: ERROR: could not insert 'test_bpf': Invalid argument

  4 tests failed here:
    test_bpf: #243 BPF_MAXINSNS: Ctx heavy transformations FAIL to prog_create err=-524 len=4096
    test_bpf: #244 BPF_MAXINSNS: Call heavy transformations FAIL to prog_create err=-524 len=4096
    test_bpf: #249 BPF_MAXINSNS: ld_abs+get_processor_id FAIL to prog_create err=-524 len=4096
    test_bpf: #250 BPF_MAXINSNS: ld_abs+vlan_push/pop FAIL to select_runtime err=-524

  Complete test result:
  https://pastebin.ubuntu.com/p/zMDwVjwF7X/

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-123-generic 4.4.0-123.147
  ProcVersionSignature: Ubuntu 4.4.0-123.147-generic 4.4.128
  Uname: Linux 4.4.0-123-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: 2.20.1-0ubuntu2.16
  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.
  Date: Wed May  2 03:45:22 2018
  HibernationDevice: RESUME=UUID=f578fa27-1d57-41c9-bb1d-7ff64c1c9345
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  PciMultimedia:

  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: root=UUID=f26894a2-496d-4891-aa9a-f66344c77779 crashkernel=196M BOOT_IMAGE=0
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-123-generic N/A
   linux-backports-modules-4.4.0-123-generic  N/A
   linux-firmware                             1.157.17
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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