[Intel-gfx] ✗ Fi.CI.BAT: failure for drm: i915: Wait for fences on new fb, not old

[Chris Wilson]

On Fri, Oct 21, 2016 at 07:49:34PM +0100, Daniel Stone wrote:
>    Hi,
> 
>    On Friday, 21 October 2016, Patchwork
>    <[1]patchwork at emeril.freedesktop.org> wrote:
> 
>      Test gem_ringfill:
>              Subgroup basic-default-hang:
>                      pass       -> TIMEOUT    (fi-hsw-4770r)
>              Subgroup basic-default-interruptible:
>                      pass       -> INCOMPLETE (fi-hsw-4770r)
>      Test gem_storedw_loop:
>              Subgroup basic-blt:
>                      pass       -> INCOMPLETE (fi-hsw-4770r)
>              Subgroup basic-bsd:
>                      pass       -> INCOMPLETE (fi-hsw-4770r)
> 
>    Pretty sure this isn't my doing, but lacking access to the full logs I
>    can't say for sure what's actually happened here.

It's not. It smells like someone used the wrong spin_lock_irq within an
irq context handler (or spin_lock_irq within spin_lock_irqsave). Haven't
spotted the culprit yet and I may very well be barking up the wrong
tree.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre