[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

Chris Wilson <chris@chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         QA Contact|intel-gfx-bugs@lists.freede |
                   |sktop.org                   |
          Component|DRM/Intel                   |IGT
           Assignee|intel-gfx-bugs@lists.freede |dri-devel@lists.freedesktop
                   |sktop.org                   |.org

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[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

--- Comment #2 from Chris Wilson <chris@chris-wilson.co.uk> ---
Given all the floating references held on objects, I'm not sure if we can do a
"stable_obj_count" without the loop and sleeping. I'm not sure of all the
places that we do have such objects in a timer, so getting the interval right
or adding a flush control is hard. E.g. one thing we are not flushing before
counting are the kms workqueues which hold a reference on the old object until
finished.

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[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

Chris Wilson <chris@chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marta.lofstedt@intel.com

--- Comment #3 from Chris Wilson <chris@chris-wilson.co.uk> ---
*** Bug 102696 has been marked as a duplicate of this bug. ***

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[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

--- Comment #4 from Marta Löfstedt <marta.lofstedt@intel.com> ---
Also, CI_DRM_3223 HSW-shards 

(prime_self_import:1525) CRITICAL: Test assertion failure function
test_export_close_race, file prime_self_import.c:363:
(prime_self_import:1525) CRITICAL: Failed assertion: obj_count == 0
(prime_self_import:1525) CRITICAL: Last errno: 9, Bad file descriptor
(prime_self_import:1525) CRITICAL: error: -32 != 0
Subtest export-vs-gem_close-race failed.

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3223/shard-hsw4/igt@prime_self_import@export-vs-gem_close-race.html

and: 
https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_339/shard-hsw3/igt@prime_self_import@export-vs-gem_close-race.html

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[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

--- Comment #5 from Chris Wilson <chris@chris-wilson.co.uk> ---
Had a thought:
drm/i915: Flush the idle-worker for debugfs/i915_drop_caches
https://patchwork.freedesktop.org/patch/183116/

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[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

Chris Wilson <chris@chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #6 from Chris Wilson <chris@chris-wilson.co.uk> ---
This should help:

commit 8d03573de74ebd38d1047131a698a2068605efed
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Wed Oct 18 13:28:14 2017 +0100

    lib: Flush the driver's internal cache of objects before counting

    As the driver itself keeps a cache of objects, these too need to be
    flushed prior to producing a stable count of objects.


there is still an open for dropping framebuffers and their ilk, but unlikely to
be affecting this test. Treating as fixed, we will know if it reoccurs again.

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[Bug 102655] [CI][HSW] igt@gem_flink_race@flink_close - Failed assertion: obj_count == 0

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https://bugs.freedesktop.org/show_bug.cgi?id=102655

Marta Löfstedt <marta.lofstedt@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

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