[Bug 111936] [GEN9+] Non-recoverable GPU hangs in SynMark2 OglTerrainFly* with Iris

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111936

--- Comment #12 from Eero Tamminen <eero.t.tamminen at intel.com> ---
Created attachment 145899
  --> https://bugs.freedesktop.org/attachment.cgi?id=145899&action=edit
TerrainFlyInst SKL GT4e error state (drm-tip 2019-11-05)

What happens with Iris is a bit odd:
* First SynMark2 Multithread fails, but there's no GPU hang
* A bit later TerrainFlyInst doesn't fail, but triggers the attached GPU hang
[1]
* After few successful runs for other tests, screen updates stop, and all
further GPU tests fail, but there's no indication of any problem in dmesg

[1] dmesg:
[ 4859.448337] Iteration 2/3: synmark2 OglTerrainFlyInst
[ 4876.890967] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[ 4876.891740] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4883.930958] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[ 4883.931728] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4886.938950] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[ 4886.939713] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4889.883259] i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000, stopped
heartbeat on rcs0
[ 4889.883262] GPU hangs can indicate a bug anywhere in the entire gfx stack,
including userspace.
[ 4889.883264] Please file a _new_ bug report on bugs.freedesktop.org against
DRI -> DRM/Intel
[ 4889.883265] drm/i915 developers can then reassign to the right component if
it's not a kernel issue.
[ 4889.883266] The GPU crash dump is required to analyze GPU hangs, so please
always attach it.
[ 4889.883267] GPU crash dump saved to /sys/class/drm/card0/error
[ 4889.984912] i915 0000:00:02.0: Resetting rcs0 for stopped heartbeat on rcs0
[ 4889.985681] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4889.986705] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[ 4889.987465] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4889.987735] i915 0000:00:02.0: Resetting chip for stopped heartbeat on rcs0
[ 4890.088868] [drm] GuC communication stopped
[ 4890.089600] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4890.090325] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset request timed
out: {request: 00000001, RESET_CTL: 00000001}
[ 4890.091936] [drm] GuC communication enabled
[ 4890.091978] i915 0000:00:02.0: GuC firmware i915/skl_guc_33.0.0.bin version
33.0 submission:disabled
[ 4890.091980] i915 0000:00:02.0: HuC firmware i915/skl_huc_2.0.0.bin version
2.0 authenticated:yes
[ 4890.323457] Iteration 3/3: synmark2 OglTerrainFlyInst
[ 4891.401947] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[ 4891.514932] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[ 4916.787572] Iteration 1/3: synmark2 OglTerrainPanInst
[ 4943.096357] Iteration 2/3: synmark2 OglTerrainPanInst
...

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