Re: ✗ Fi.CI.IGT: failure for drm/i915: Add support for asynchronous display power disabling

[Imre Deak <imre.deak@intel.com>]

On Fri, May 03, 2019 at 01:37:53PM +0100, Chris Wilson wrote:
> Quoting Imre Deak (2019-05-03 11:07:55)
> > On Fri, May 03, 2019 at 07:50:26AM +0000, Patchwork wrote:
> > > == Series Details ==
> > > 
> > > Series: drm/i915: Add support for asynchronous display power disabling
> > > URL   : https://patchwork.freedesktop.org/series/60242/
> > > State : failure
> > > 
> > > == Summary ==
> > > 
> > > CI Bug Log - changes from CI_DRM_6032_full -> Patchwork_12955_full
> > > ====================================================
> > > 
> > > Summary
> > > -------
> > > 
> > >   **FAILURE**
> > > 
> > >   Serious unknown changes coming with Patchwork_12955_full absolutely need to be
> > >   verified manually.
> > >   
> > >   If you think the reported changes have nothing to do with the changes
> > >   introduced in Patchwork_12955_full, please notify your bug team to allow them
> > >   to document this new failure mode, which will reduce false positives in CI.
> > > 
> > >   
> > > 
> > > Possible new issues
> > > -------------------
> > > 
> > >   Here are the unknown changes that may have been introduced in Patchwork_12955_full:
> > > 
> > > ### IGT changes ###
> > > 
> > > #### Possible regressions ####
> > > 
> > >   * igt@gem_persistent_relocs@forked-interruptible-thrashing:
> > >     - shard-glk:          [PASS][1] -> [TIMEOUT][2]
> > >    [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6032/shard-glk6/igt@gem_persistent_relocs@forked-interruptible-thrashing.html
> > >    [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12955/shard-glk7/igt@gem_persistent_relocs@forked-interruptible-thrashing.html
> > 
> > Looks like an unrelated issue: on this GLK there are two HDMI displays
> > connected, so the change shouldn't make any diffence on it. The change
> > only affects the DP detect and hotplug paths, where we'll do now an
> > async power domain put.
> 
> There's no history of glk locking up there, 
> 
> > The machine is still up when the problem happens, the test seems to get
> > stuck and aborted by the test runner (after ~6mins according to [1]).
> > 
> > [43/82] (762s left) gem_persistent_relocs (forked-interruptible-thrashing)
> > Starting subtest: forked-interruptible-thrashing
> > Timeout. Killing the current test with SIGQUIT.
> > Timeout. Killing the current test with SIGKILL.
> 
> and yet it locked up sufficiently to not respond to a signal, suggesting
> an oops (the test takes 3s normally on glk).

No pstore logs either. I also noticed that the run [1] above resulted in
an incomplete, if that's indicative of anything. The same goes for the
previous Patchwork_12954 run.

> -Chris
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