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[Bug 2107440] [NEW] powerpc/mm:exec_prot fails on testing read on --x on Power9 PowerVM with Oracular

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Koichiro Den <2107440@xxxxxxxxxxxxxxxxxx>
Date: Wed, 16 Apr 2025 06:55:29 -0000
Reply-to: Bug 2107440 <2107440@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

Public bug reported:

Failure observed on oracular linux 6.11.0-25.25 (s2025.03.17) and
6.11.0-26.26 (2025.04.14) on metal P9g-LPAR01kernel (Power9 PowerVM).

Log output:

    # selftests: powerpc/mm: exec_prot
    # test: exec_prot                                                                                                   
    # tags: git_version:unknown
    # [SKIP] Test skipped on line 89
    # [FAIL] Test FAILED on line 175
    # Testing read on --x, should fault...failure: exec_prot
    not ok 1 selftests: powerpc/mm: exec_prot # exit=1

This is the first time we run powerpc/mm:exec_prot on P9g-LPAR01kernel,
which implies that this might not be a regression. This test case passed
on other environments over many SRU cycles.

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


** Tags: oracular ppc64el ubuntu-kernel-selftests

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https://bugs.launchpad.net/bugs/2107440

Title:
  powerpc/mm:exec_prot fails on testing read on --x on Power9 PowerVM
  with Oracular

Status in ubuntu-kernel-tests:
  New

Bug description:
  Failure observed on oracular linux 6.11.0-25.25 (s2025.03.17) and
  6.11.0-26.26 (2025.04.14) on metal P9g-LPAR01kernel (Power9 PowerVM).

  Log output:

      # selftests: powerpc/mm: exec_prot
      # test: exec_prot                                                                                                   
      # tags: git_version:unknown
      # [SKIP] Test skipped on line 89
      # [FAIL] Test FAILED on line 175
      # Testing read on --x, should fault...failure: exec_prot
      not ok 1 selftests: powerpc/mm: exec_prot # exit=1

  This is the first time we run powerpc/mm:exec_prot on
  P9g-LPAR01kernel, which implies that this might not be a regression.
  This test case passed on other environments over many SRU cycles.

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