[Bug 57934] New: [IVB regression]I-G-T/gem_cacheing failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57934

          Priority: medium
            Bug ID: 57934
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB regression]I-G-T/gem_cacheing failed
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: yangweix.shui at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 71069
  --> https://bugs.freedesktop.org/attachment.cgi?id=71069&action=edit
gem_cacheing fail dmesg

good commit:
Kernel: (drm-intel-next-queued)1a240d4de2ccf40de5796a4d1dbb3a0236051fc9

bad commit:
Kernel: (drm-intel-next-queued)46cddd0246ecca425a2d0f07f3102030665afc77


git bisect log：
---------------------
# bad: [46cddd0246ecca425a2d0f07f3102030665afc77] drm/i915: Remove duplicate
and unused register #defines in i915_reg.h
# good: [1a240d4de2ccf40de5796a4d1dbb3a0236051fc9] drm/i915: fixup sparse
warnings
git bisect start '46cddd0246ecca425a2d0f07f3102030665afc77'
'1a240d4de2ccf40de5796a4d1dbb3a0236051fc9'
# bad: [3cb49d22561ad4063856ad809b175478c1f09c8a] drm/i915: setup the hangcheck
timer early
git bisect bad 3cb49d22561ad4063856ad809b175478c1f09c8a
# good: [29bc0d33dcd509a87cfc6eaf4ac29ce6cc2df40b] drm/i915: Split
intel_ring_begin
git bisect good 29bc0d33dcd509a87cfc6eaf4ac29ce6cc2df40b
# bad: [7c7b4d55fb69f679c27f8ed056c6f304cd69c3b3] drm/i915: Set initial seqno
value close to wrap boundary
git bisect bad 7c7b4d55fb69f679c27f8ed056c6f304cd69c3b3
# good: [d2ef0e20dd0d6257526ad41b1b5bcfdc4cff4054] drm/i915: Add
intel_ring_handle_seqno wrap
git bisect good d2ef0e20dd0d6257526ad41b1b5bcfdc4cff4054

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