[Bug 105873] [i915]Failed to release pages: bind_count=1, pages_pin_count=1, pin_display=0 on kernel 4.14.20

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105873

--- Comment #15 from Owen Zhang <owen.zhang at intel.com> ---
(In reply to Jani Saarinen from comment #14)
> Rerporter, would be really nice to see this done by git bisect, thanks

the following is our capture bisect log. due to the cmd:"git bisect" is used to
test the regression, so:
"good" means can reproduce this issue.
"bad" means can't reproduce this issue. it means fixed this issue.

the log:

git bisect start
# good: [0d7e76beaa92de8837af7d49a36058ee6cf8fe78] Merge tag
'gvt-next-2017-12-05' of https://github.com/intel/gvt-linux into
drm-intel-next-queued
git bisect good 0d7e76beaa92de8837af7d49a36058ee6cf8fe78
# bad: [7125397b82460d74ae0584bdcdc006deec5e895d] drm/i915: Track GGTT writes
on the vma
git bisect bad 7125397b82460d74ae0584bdcdc006deec5e895d
# good: [a655aeb34f7cae135a31a8a643314061ca6737e3] drm/i915/uc: Don't fetch GuC
firmware if no plan to use GuC
git bisect good a655aeb34f7cae135a31a8a643314061ca6737e3
# good: [121981fafe699d9f398a3c717912ef4eae6719b1] drm/i915/guc: Combine
enable_guc_loading|submission modparams
git bisect good 121981fafe699d9f398a3c717912ef4eae6719b1
# bad: [010e3e68cd9cb65ea50c0af605e966cda333cb2a] drm/i915: Remove vma from
object on destroy, not close
git bisect bad 010e3e68cd9cb65ea50c0af605e966cda333cb2a
# good: [0dfa1cee613e03cee295b8d1ed8130c84311b584] drm/i915/huc: Load HuC only
if requested
git bisect good 0dfa1cee613e03cee295b8d1ed8130c84311b584
# first bad commit: [010e3e68cd9cb65ea50c0af605e966cda333cb2a] drm/i915: Remove
vma from object on destroy, not close

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