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      <base href="https://bugs.freedesktop.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BAT][CTG] (gem_mmap_gtt:3095) Failed assertion: memcmp(ptr , linear_pattern, PAGE_SIZE) == 0"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=101234">101234</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BAT][CTG] (gem_mmap_gtt:3095) Failed assertion: memcmp(ptr , linear_pattern, PAGE_SIZE) == 0
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>martin.peres@free.fr
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Ever since we swapped fi-ctg-l9400 for another one
(<a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO - [BAT][CTG] igt@gem_exec_suspend@basic-s3's execution time tripled after the pre-rc1 backmerge"
   href="show_bug.cgi?id=101089">https://bugs.freedesktop.org/show_bug.cgi?id=101089</a>), we started randomly
hitting an assert when running igt@gem_mmap_gtt@basic-small-bo-tiledx:

(gem_mmap_gtt:3095) CRITICAL: Test assertion failure function test_huge_bo,
file gem_mmap_gtt.c:518:
(gem_mmap_gtt:3095) CRITICAL: Failed assertion: memcmp(ptr , linear_pattern,
PAGE_SIZE) == 0
Subtest basic-small-bo-tiledX failed.
**** DEBUG ****
(gem_mmap_gtt:3095) intel-chipset-DEBUG: Test requirement passed: pci_dev
(gem_mmap_gtt:3095) intel-os-DEBUG: Checking 1 surfaces of size 134217728 bytes
(total 134221824) against RAM
(gem_mmap_gtt:3095) drmtest-DEBUG: Test requirement passed: !(fd<0)
(gem_mmap_gtt:3095) igt-debugfs-DEBUG: Opening debugfs directory
'/sys/kernel/debug/dri/0'
(gem_mmap_gtt:3095) intel-os-DEBUG: Test requirement passed:
__intel_check_memory(count, size, mode, &required, &total)
(gem_mmap_gtt:3095) igt-core-DEBUG: Test requirement passed:
!igt_run_in_simulation()
(gem_mmap_gtt:3095) DEBUG: Test requirement passed: __gem_set_tiling(fd, bo,
tiling, pitch) == 0
(gem_mmap_gtt:3095) DEBUG: Test requirement passed: __gem_set_tiling(fd, bo,
tiling, pitch) == 0
(gem_mmap_gtt:3095) DEBUG: Test requirement passed: ptr
(gem_mmap_gtt:3095) CRITICAL: Test assertion failure function test_huge_bo,
file gem_mmap_gtt.c:518:
(gem_mmap_gtt:3095) CRITICAL: Failed assertion: memcmp(ptr , linear_pattern,
PAGE_SIZE) == 0
****  END  ****

So far, it has happened 4 out of the 5 runs of the new machine.

Full logs:
<a href="https://intel-gfx-ci.01.org/CI/CI_DRM_2671/fi-ctg-l9400/igt@gem_mmap_gtt@basic-small-bo-tiledx.html">https://intel-gfx-ci.01.org/CI/CI_DRM_2671/fi-ctg-l9400/igt@gem_mmap_gtt@basic-small-bo-tiledx.html</a></pre>
        </div>
      </p>


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