On Fri, Jan 08, 2016 at 08:25:07PM +, Chris Wilson wrote:
> Whilst calling back into the driver, we have to drop the
> file->table_lock spinlock and so to prevent reusing the closed handle we
> mark that handle as stale in the idr, perform the callback and then
> remove the handle. It is then p
When userspace closes a handle, we remove it from the file->object_idr
and then tell the driver to drop its references to that file/handle.
However, as the file/handle is already available again for reuse, it may
be reallocated back to userspace and active on a new object before the
driver has had
