[Bug 89334] New: 4.0-rc1 kernel GPU hang: ecode 3:0:0x02faffcf (i915) stuck on render ring ecode 3:0:0x02faffcf

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89334

            Bug ID: 89334
           Summary: 4.0-rc1 kernel GPU hang:  ecode 3:0:0x02faffcf (i915)
                    stuck on render ring ecode 3:0:0x02faffcf
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jimmcdevitt60 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

After eliminating the other members of the stack, It appears that 4.0~rc1 has a
regression. One of two things happen:

1)
Feb 25 18:24:42 Aesop kernel: [ 1318.339897] [drm] stuck on render ring
Feb 25 18:24:42 Aesop kernel: [ 1318.341695] [drm] GPU HANG: ecode
3:0:0x02e6ffc1, in Xorg [2282], reason: Ring hung, action: reset
Feb 25 18:24:42 Aesop kernel: [ 1318.341698] [drm] GPU hangs can indicate a bug
anywhere in the entire gfx stack, including userspace.
Feb 25 18:24:42 Aesop kernel: [ 1318.341700] [drm] Please file a _new_ bug
report on bugs.freedesktop.org against DRI -> DRM/Intel
Feb 25 18:24:42 Aesop kernel: [ 1318.341702] [drm] drm/i915 developers can then
reassign to the right component if it's not a kernel issue.
Feb 25 18:24:42 Aesop kernel: [ 1318.341703] [drm] The gpu crash dump is
required to analyze gpu hangs, so please always attach it.
Feb 25 18:24:42 Aesop kernel: [ 1318.341705] [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Feb 25 18:24:42 Aesop kernel: [ 1318.371624] drm/i915: Resetting chip after gpu
hang
Feb 25 18:48:56 Aesop kernel: [ 2772.339749] [drm] stuck on render ring
Feb 25 18:48:56 Aesop kernel: [ 2772.341710] [drm] GPU HANG: ecode
3:0:0x02faffcf, in Xorg [2282], reason: Ring hung, action: reset
Feb 25 18:48:56 Aesop kernel: [ 2772.371456] drm/i915: Resetting chip after gpu
hang

which you can restart X (provided you know your system blind as nothing is
intelligent on the screen.) This occurs seemingly at random, frequently.

2)
The system just locks - screen perfectly frozen. Cycle the power. No trace of
any crash or oops.

As usual, for item one - you can not get at the crash dump when you try to ssh
into the box to look at it; its ALWAYS empty (/sys/class/drm/card0/error). Also
there is no pattern as to when it happens either.

Additional info:

OpenGL renderer string: Gallium 0.4 on i915 (chipset: 945G)
OpenGL version string: 2.1 Mesa 10.4.5

Compiled with: gcc version 4.9.2 (Both OS & Mesa)

xorg-server: 1.15.1
Module intel: vendor="X.Org Foundation"
compiled for 1.15.1, module version = 2.99.917
Module class: X.Org Video Driver
ABI class: X.Org Video Driver, version 15.0

Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.0.0-0-reaper
root=UUID=8536097e-c02a-4a8c-9cdf-b40ba4e3b74d ro
crashkernel=384M-2G:64M,2G-:128M
drm_kms_helper.edid_firmware=edid/1280x1024_75.bin thermal.crt=75 quiet splash
vt.handoff=7

BIOS DMI: ECS 945GCT-M2/945GCT-M2, BIOS 080012  07/18/2008

Thanks in advance again for your help.

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