[Bug 109047] [gen3] [drm] GPU HANG: ecode 3:0:7ee06741 in Chrome_InProcGp, hang on rcs0, reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109047

--- Comment #4 from Vasily Galkin <galkin-vv at ya.ru> ---
Created attachment 143111
  --> https://bugs.freedesktop.org/attachment.cgi?id=143111&action=edit
Compressed logs of crash on 4.20 with drm.debug=0x1e

I've installed ubuntu's build of drm-tip

from https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/2018-12-13/

version 
4.20.0-994-generic #201812122102 SMP Thu Dec 13 02:04:59 UTC 2018 x86_64
GNU/Linux

compiled from cod/tip/drm-tip/2018-12-13
(1f86f1fb70f082ed93450c328e518d8013d23953 - 2018y-12m-13d-01h-20m-07s UTC
integration manifest)

And booted with drm.debug=0x1e log_buf_len=4M

After uptime of 21.5 days the similar GPU hang reproduces:
[1851925.030801] vgalkin-desktop kernel: [drm:intel_power_well_enable [i915]]
enabling always-on
[1851929.100893] vgalkin-desktop kernel: [drm:intel_power_well_disable [i915]]
disabling always-on
[1851949.683477] vgalkin-desktop kernel: [drm:intel_power_well_enable [i915]]
enabling always-on
[1851953.132869] vgalkin-desktop kernel: [drm:intel_power_well_disable [i915]]
disabling always-on
[1851964.572983] vgalkin-desktop kernel: [drm:intel_power_well_enable [i915]]
enabling always-on
[1851973.028999] vgalkin-desktop kernel: [drm] GPU HANG: ecode 3:0:0x407bcfc5,
in Xorg [910], reason: hang on rcs0, action: reset
[1851973.029007] vgalkin-desktop kernel: [drm] GPU hangs can indicate a bug
anywhere in the entire gfx stack, including userspace.
[1851973.029010] vgalkin-desktop kernel: [drm] Please file a _new_ bug report
on bugs.freedesktop.org against DRI -> DRM/Intel
[1851973.029013] vgalkin-desktop kernel: [drm] drm/i915 developers can then
reassign to the right component if it's not a kernel issue.
[1851973.029015] vgalkin-desktop kernel: [drm] The gpu crash dump is required
to analyze gpu hangs, so please always attach it.
[1851973.029018] vgalkin-desktop kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
[1851973.029262] vgalkin-desktop kernel: [drm:i915_reset_device [i915]]
resetting chip
[1851973.029384] vgalkin-desktop kernel: [drm:drm_atomic_state_init [drm]]
Allocated atomic state 000000004846a8c9

Nobody used computer at that moment, so the visual effect at the time of bug is
unknown (I think the monitor was in standby mode when hang appeared).
When I see it after several hours all was looking&working fine.

The 21-day log with drm.debug=0x1e it too huge, so I'm attaching several
compressed logs inside tar.xz:
at the boottime: hang-on-4.20-boot-logs.txt 
several hours before hang and hang: hang-on-4.20-hang-logs.txt
and error state: hang-on-4.20-drm-card0-error.txt

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