[Bug 79053] [BDW userptr] Rendercheck dcoords causes X crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79053

--- Comment #54 from lu hua <huax.lu at intel.com> ---
(In reply to comment #53)
> Hmm, that log makes the failure path look even simpler: a single BLT copy in
> the batch to write into the userptr. It would be the same code path on every
> generation (certainly if Option "AccelMethod" "BLT" is used).
> 
> Something you can do for a quick check:
> 
> ickle at nuc-i3427:/usr/src/xf86-video-intel$ git diff
> diff --git a/src/sna/kgem.c b/src/sna/kgem.c
> index 66adae8..b1cf92a 100644
> --- a/src/sna/kgem.c
> +++ b/src/sna/kgem.c
> @@ -2581,7 +2581,7 @@ bool __kgem_ring_is_idle(struct kgem *kgem, int ring)
>         return true;
>  }
>  
> -#if 0
> +#if 1
>  static void kgem_commit__check_reloc(struct kgem *kgem)
>  {
>         struct kgem_request *rq = kgem->next_request;
> 
> 
> which enables the sanity check on the kernel relocation values.

Test this patch, It still fail.

XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
      after 550 requests (550 known processed) with 0 events remaining.
xinit: connection to X server lost
xterm: fatal IO error 11 (Resource temporarily unavailable) or KillClient on X
server ":0"
[1]+  Done                    xinit  (wd:
/GFX/build/component/Xf86_video_intel/xf86-video-intel)
(wd now: /GFX/Test/Rendercheck/bin)

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