sceHttp2DeleteRequest erased the request's completion queue, but
sceHttp2DeleteTemplate and sceHttp2Term removed descendant request
handles through ReleaseOwnedHandles without clearing their completion
queues. A request that completed asynchronously before its template or
context was deleted kept a stale completion that sceHttp2WaitAsync could
still consume.
ReleaseOwnedHandles now returns every transitively removed handle id, and
DeleteTemplate and Term erase the completion queue of each removed
request. CompleteAsync validates that the request is live while holding
the handle lock and inserts the completion under it, so a send that races
a deletion either returns the invalid-id error without queuing or is
erased by the deletion; a completion is no longer re-created after a
deletion returns. The only lock nesting stays handles before completions,
and no mutex is held while the user event is triggered.
GuestHttp2 covers a queued completion before sceHttp2DeleteTemplate and
before sceHttp2Term: the completion is no longer consumable, a late send
returns the invalid-id error without queuing, and the removed handles are
rejected.
c426143712