[Bug 111256] [CI][SHARDS] igt at prime_busy@wait-hang-vebox|igt at gem_eio@in-flight-suspend - dmesg-warn - kernel BUG at ./drivers/gpu/drm/i915/intel_wakeref.h:110!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111256

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
No causal link, but 

commit d8af05ff38ae7a42819b285ffef314942414ef8b (HEAD -> drm-intel-next-queued,
drm-intel/for-linux-next, drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Aug 2 11:00:15 2019 +0100

    drm/i915: Allow sharing the idle-barrier from other kernel requests

    By placing our idle-barriers in the i915_active fence tree, we expose
    those for reuse by other components that are issuing requests along the
    kernel_context. Reusing the proto-barrier active_node is perfectly fine
    as the new request implies a context-switch, and so an opportune point
    to run the idle-barrier. However, the proto-barrier is not equivalent
    to a normal active_node and care must be taken to avoid dereferencing the
    ERR_PTR used as its request marker.

is likely related. Watch this space.

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