<html>
    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <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][KBL] igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c Pipe A vblank wait timed out in CI"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=100445">100445</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BAT][KBL] igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c Pipe A vblank wait timed out in CI
          </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>critical
          </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>For some reason, pipe A's vblank wait timed out when running
igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c, leaving the test result as
incomplete on fi-kbl-7560u.

Relevant extract of the trace:

[  555.314828] WARNING: CPU: 3 PID: 8466 at
drivers/gpu/drm/i915/intel_display.c:12639
intel_atomic_commit_tail+0xff8/0x1020 [i915]
[  555.314830] pipe A vblank wait timed out
[  555.314831] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic asix usbnet mii x86_pkg_temp_thermal i915
intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm mei_me mei
prime_numbers i2c_hid pinctrl_sunrisepoint pinctrl_intel
[  555.314864] CPU: 3 PID: 8466 Comm: kworker/u8:45 Tainted: G     U         
4.11.0-rc4-CI-CI_DRM_2428+ #1
[  555.314865] Hardware name: Dell Inc. XPS 13 9360/093TW6, BIOS 1.3.2
01/18/2017
[  555.314869] Workqueue: events_unbound async_run_entry_fn
[  555.314871] Call Trace:
[  555.314874]  dump_stack+0x67/0x92
[  555.314877]  __warn+0xc6/0xe0
[  555.314880]  warn_slowpath_fmt+0x4a/0x50
[  555.314883]  ? finish_wait+0x5e/0x80
[  555.314900]  intel_atomic_commit_tail+0xff8/0x1020 [i915]
[  555.314904]  ? wake_atomic_t_function+0x30/0x30
[  555.314921]  intel_atomic_commit+0x42a/0x530 [i915]
[  555.314934]  ? intel_runtime_pm_put+0x51/0xb0 [i915]
[  555.314937]  drm_atomic_commit+0x46/0x50
[  555.314940]  drm_atomic_helper_commit_duplicated_state+0xbf/0xd0
[  555.314956]  __intel_display_resume+0x7f/0xd0 [i915]
[  555.314971]  intel_display_resume+0xdd/0x110 [i915]
[  555.314985]  i915_pm_restore+0xef/0x190 [i915]
[  555.314995]  i915_pm_resume+0x9/0x10 [i915]
[  555.315022]  pci_pm_resume+0x5f/0x90
[  555.315031]  dpm_run_callback+0x6f/0x330
[  555.315033]  ? pci_pm_thaw+0x90/0x90
[  555.315035]  device_resume+0xac/0x1e0
[  555.315038]  ? dpm_watchdog_set+0x60/0x60
[  555.315041]  async_resume+0x18/0x40
[  555.315043]  async_run_entry_fn+0x34/0x160
[  555.315046]  process_one_work+0x1f4/0x6d0
[  555.315048]  ? process_one_work+0x16e/0x6d0
[  555.315051]  worker_thread+0x49/0x4a0
[  555.315055]  kthread+0x107/0x140
[  555.315056]  ? process_one_work+0x6d0/0x6d0
[  555.315058]  ? kthread_create_on_node+0x40/0x40
[  555.315061]  ret_from_fork+0x2e/0x40
[  555.315066] ---[ end trace b6dda3db7d070407 ]---

Full results:
<a href="https://intel-gfx-ci.01.org/CI/CI_DRM_2428/fi-kbl-7560u/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c.html">https://intel-gfx-ci.01.org/CI/CI_DRM_2428/fi-kbl-7560u/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c.html</a></pre>
        </div>
      </p>


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