Bug 91610

Summary:	[BSW] GPU hang for spec.shaders.point-vertex-id gl_instanceid divisor
Product:	Mesa	Reporter:	Mark Janes <mark.a.janes>
Component:	Drivers/DRI/i965	Assignee:	Ben Widawsky <ben>
Status:	CLOSED FIXED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium	CC:	ben, mark.a.janes
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Mark Janes 2015-08-11 18:25:40 UTC

Mesa master (3c04a90) encounters GPU hang when running this test.

10.6 does not encounter this hang.

[drm] stuck on render ring
[drm] GPU HANG: ecode 8:0:0x85dfffff, in point-vertex-id [8449], reason: Ring hung, action: reset
[drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[drm] GPU crash dump saved to /sys/class/drm/card0/error
[drm] stuck on render ring
[drm] GPU HANG: ecode 8:0:0x85dfffff, reason: Ring hung, action: reset

Comment 1 Ben Widawsky 2015-08-17 23:49:11 UTC

For future laziness:
./bin/point-vertex-id gl_InstanceID divisor -auto -fbo

Comment 2 Ben Widawsky 2015-08-18 19:03:40 UTC

This if fixed by Neil's patch series (need all 3):
http://patchwork.freedesktop.org/patch/54323/


I will try to get it merged today.

Comment 3 Ben Widawsky 2015-08-19 01:47:54 UTC

I have pushed 1/3 of Neil's patches which prevents hangs. Closing this bug since the hang is gone now, and we should track https://bugs.freedesktop.org/show_bug.cgi?id=84677 instead.

Comment 4 Mark Janes 2015-08-20 16:39:29 UTC

I went to verify this bug, and found that gpu hang still occurs.  Previous test results were inaccurate.  Apparently, running test with patches 2 and 3 of Neil's series may affect subsequent test runs.

Comment 5 Ben Widawsky 2015-08-20 16:53:47 UTC

(In reply to Mark Janes from comment #4)
> I went to verify this bug, and found that gpu hang still occurs.  Previous
> test results were inaccurate.  Apparently, running test with patches 2 and 3
> of Neil's series may affect subsequent test runs.

Are the other subtests hanging too? I have a patch (based on Neil's, but different) which makes divisor pass on BDW, but the other tests are failing (also on BDW).

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.