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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL-Y] GPU hangs ecode 9:0:0x87cafff2/ecode 9:0:0x85dffffb while running benchmarks"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90561#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [SKL-Y] GPU hangs ecode 9:0:0x87cafff2/ecode 9:0:0x85dffffb while running benchmarks"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90561">bug 90561</a>
from <span class="vcard"><a class="email" href="mailto:conselvan2@gmail.com" title="Ander Conselvan de Oliveira <conselvan2@gmail.com>"> <span class="fn">Ander Conselvan de Oliveira</span></a>
</span></b>
<pre>(In reply to valtteri.rantala from <a href="show_bug.cgi?id=90561#c6">comment #6</a>)
<span class="quote">> Later with the additional test causes a system hang.
> Here are new dmesg.
> [ 167.712499] [drm] stuck on render ring
> [ 167.714151] [drm] GPU HANG: ecode 9:0:0x85dffffb, in synmark2 [3031],
> reason:
> Ring hung, action: reset
> [ 167.714157] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
> stack, including userspace.
> [ 167.714159] [drm] Please file a _new_ bug report on bugs.freedesktop.org
> against DRI -> DRM/Intel
> [ 167.714161] [drm] drm/i915 developers can then reassign to the right
> component if it's not a kernel issue.
> [ 167.714163] [drm] The gpu crash dump is required to analyze gpu hangs, so
> please always attach it.
> [ 167.714165] [drm] GPU crash dump saved to /sys/class/drm/card0/error
> [ 167.716498] drm/i915: Resetting chip after gpu hang
> [ 168.182886] [drm] RC6 on
> [ 175.719839] [drm] stuck on render ring
> [ 175.721031] [drm] GPU HANG: ecode 9:0:0x87cafff2, in synmark2 [3032],
> reason: Ring hung, action: reset
> [ 175.723310] drm/i915: Resetting chip after gpu hang
> [ 176.189345] [drm] RC6 on
> [ 261.507979] [drm:fw_domains_get [i915]] *ERROR* blitter: timed out
> waiting for forcewake ack request.
> [ 262.510760] [drm:fw_domains_get [i915]] *ERROR* blitter: timed out
> waiting for forcewake ack request.
> [ 262.732373] [drm:fw_domains_get [i915]] *ERROR* media: timed out waiting
> for forcewake ack request.</span >
This system hang looks like <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL]igt/gem_concurrent_blit subcase sporadically causes system hang and *ERROR* blitter: timed out waiting for forcewake ack to clear."
href="show_bug.cgi?id=89959">bug 89959</a>.</pre>
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