Quoting Chris Wilson (2017-12-21 09:28:42)
> The vk cts test:
> dEQP-VK.api.external.semaphore.opaque_fd.export_multiple_times_temporary
>
> triggers a lot of
> VFS: Close: file count is 0
>
> Dave pointed out that clearing the syncobj->file from
> drm_syncobj_file_release() was sufficient to silence the test, but that
> opens a can of worm since we assumed that the syncobj->file was never
> unset. So stop trying to reuse the same struct file for every fd pointing
> to the drm_syncobj, and allocate one file for each fd instead.
>
> v2: Fixup return handling of drm_syncobj_fd_to_handle
>
> Reported-by: Dave Airlie <airlied@xxxxxxxxxx>
Fixes: e9083420bbac ("drm: introduce sync objects (v4)")
> Testcase: igt/syncobj_base/test-create-close-twice
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Dave Airlie <airlied@xxxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.13+
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