** Summary changed:

- TRACE_syscall.ptrace_syscall_errno in seccomp from ubuntu_kernel_selftests 
failed on B/C Power8
+ TRACE_syscall.ptrace_syscall_errno in seccomp from ubuntu_kernel_selftests 
failed on B/C PowerPC

** Tags added: cosmic

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https://bugs.launchpad.net/bugs/1829359

Title:
  TRACE_syscall.ptrace_syscall_errno in seccomp from
  ubuntu_kernel_selftests failed on B/C PowerPC

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

Bug description:
  This test will fail on Bionic / Cosmic PowerPC:

  [ RUN      ] TRACE_syscall.ptrace_syscall_errno
  seccomp_bpf.c:1826:TRACE_syscall.ptrace_syscall_errno:Expected -(-3) (3) == 
(*__errno_location ()) (38)
  TRACE_syscall.ptrace_syscall_errno: Test failed at step #13

  This test will pass on PowerPC with Disco kernel.

  As this issue can be reproduced with the upsteam kernel tree, so it
  looks like a kernel issue instead of a test case issue to me.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.18.0-20-generic 4.18.0-20.21~18.04.1
  ProcVersionSignature: Ubuntu 4.18.0-20.21~18.04.1-generic 4.18.20
  Uname: Linux 4.18.0-20-generic ppc64le
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: ppc64el
  Date: Thu May 16 09:48:18 2019
  ProcLoadAvg: 0.38 0.64 0.48 1/1316 6114
  ProcLocks:
   1: POSIX  ADVISORY  WRITE 1767 00:17:402 0 EOF
   2: POSIX  ADVISORY  WRITE 3941 00:17:825 0 EOF
   3: FLOCK  ADVISORY  WRITE 3492 00:17:390 0 EOF
   4: FLOCK  ADVISORY  WRITE 3947 00:17:820 0 EOF
   5: POSIX  ADVISORY  WRITE 3872 00:17:799 0 EOF
  ProcSwaps:
   Filename                             Type            Size    Used    Priority
   /swap.img                               file         8388544 0       -2
  ProcVersion: Linux version 4.18.0-20-generic (buildd@bos02-ppc64el-019) (gcc 
version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21~18.04.1-Ubuntu SMP Wed May 8 
08:51:08 UTC 2019
  SourcePackage: linux-signed-hwe
  UpgradeStatus: No upgrade log present (probably fresh install)
  VarLogDump_list: total 0
  cpu_cores: Number of cores present = 20
  cpu_coreson: Number of cores online = 20
  cpu_dscr: DSCR is 0
  cpu_freq:
   min: 3.694 GHz (cpu 159)
   max: 3.695 GHz (cpu 1)
   avg: 3.694 GHz
  cpu_runmode:
   Could not retrieve current diagnostics mode,
   No kernel interface to firmware
  cpu_smt: SMT=8

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