[Bug 100459] New: GPU HANG: ecode 9:0:0x85dffffb, in X [2869], reason: Hang on render ring, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100459

            Bug ID: 100459
           Summary: GPU HANG: ecode 9:0:0x85dffffb, in X [2869], reason:
                    Hang on render ring, action: reset
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jkt at flaska.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 130556
  --> https://bugs.freedesktop.org/attachment.cgi?id=130556&action=edit
/sys/class/drm/card0/error

Kernel 4.9.18, Gentoo, Skylake i5-6300U, Thinkpad T460s, xorg-drivers-1.19,
xorg-server-1.19.0, xorg-x11-7.4-r2, mesa oldish git
5f0e4c7c798827950e835d40912024480ec6d665 (built on 2016-12-05), KDE Plasma,
kwin df306a4062ca946de34507a3e2be1d7178dfdf38 (built on 2017-03-06).

Here's what dmesg said:

[50141.741666] [drm] GPU HANG: ecode 9:0:0x85dffffb, in X [2869], reason: Hang
on render ring, action: reset
[50141.741670] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[50141.741671] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[50141.741673] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[50141.741674] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[50141.741676] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[50141.741796] drm/i915: Resetting chip after gpu hang
[50141.742030] [drm] RC6 on
[50141.758485] [drm] GuC firmware load skipped
[50151.789804] drm/i915: Resetting chip after gpu hang
[50151.790021] [drm] RC6 on
[50151.805713] [drm] GuC firmware load skipped
[50151.828349] kscreen_backend[3160]: segfault at 10 ip 00007fd5e834944c sp
00007ffc6cf8b680 error 4 in KSC_XRandR.so[7fd5e8330000+22000]
[50153.951117] wlp4s0: deauthenticating from f4:f2:6d:18:f3:bd by local choice
(Reason: 3=DEAUTH_LEAVING)

I'll be attaching the crash dump, what I have in the dmesg, and the Xorg log.

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