[Bug 54226] [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54226

--- Comment #98 from Janusz <januszmk6 at gazeta.pl> ---
(In reply to comment #94)
> (In reply to comment #93)
> > Created attachment 82773 [details]
> > i915_error_state with new patch
> > 
> > (In reply to comment #92)
> > > Created attachment 82768 [details] [review] [review] [review]
> > > New read-after-write patch
> > > 
> > > Oops, my mistake, please try again.
> > 
> > Now loading, but after five minutes test:
> > 793485 Jul 21 17:32:56 localhost kernel: [  321.432882] hda-intel
> > 0000:00:1b.0: Unstable LPIB (32740 >= 4096); disabling LPIB delay counting
> > 793486 Jul 21 17:34:49 localhost kernel: [  434.291085]
> > [drm:i915_hangcheck_elapsed] *ERROR* stuck on render ring
> > 793487 Jul 21 17:34:49 localhost kernel: [  434.291088] [drm] capturing
> > error event; look for more information in
> > /sys/kernel/debug/dri/0/i915_error_state
> > 793488 Jul 21 17:34:49 localhost kernel: [  434.307124]
> > [drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0xbfe2000
> > ctx 1) at 0xbfe21dc
> 
> That is a blorp (mesa/i965) bug and not the semaphore deadlock.
Could you please provide some link to this blorp bug report?
I had problem with semaphore deadlock, seems that with kernel 3.11 problem does
not occur (without patch), but now I have:

[22221.843000] [drm:i915_hangcheck_elapsed] *ERROR* stuck on render ring
[22221.843483] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x4dfb5000 ctx 1) at 0x4dfb5518

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