[Bug 78000] New: GPU crash dump

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78000

          Priority: medium
            Bug ID: 78000
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: GPU crash dump
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: Ingo.Saitz at stud.uni-hannover.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 98072
  --> https://bugs.freedesktop.org/attachment.cgi?id=98072&action=edit
GPU crash dump saved to /sys/class/drm/card0/error

[drm] GPU crash dump saved to /sys/class/drm/card0/error
[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.
i915: render error detected, EIR: 0x00000010
i915: page table error
i915:   PGTBL_ER: 0x00010000
[drm:i915_report_and_clear_eir] *ERROR* EIR stuck: 0x00000010, masking
i915: render error detected, EIR: 0x00000010
i915: page table error
i915:   PGTBL_ER: 0x00010000

After this bug GLX applications (e.g. glxgears) threw core dumps on startup,
after displaying an empty black window.

After applying the fence counting patch (attachment 75820 from
https://bugs.freedesktop.org/show_bug.cgi?id=59771 ), dri applications continue
to work, and the Xorg server process outputs a fence error almost on startup
("Fixing up fence counts; was -1, expected 0" - the patch only displays this
error once).

I don't know how to trigger the error, other than using 3d-accelerated programs
for some time.

Package versions (current debian unstable):
mesa 10.1.0-5
libdrm 2.4.52-1 + fence counting patch applied
xorg-xserver 2:1.15.1-1

linux-kernel 3.14.1 (own config)
CONFIG_DRM_I915=m
CONFIG_DRM_I915_KMS=y
CONFIG_DRM_I915_FBDEV=y
# CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT is not set
# CONFIG_DRM_I915_UMS is not set

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