[sr-dev] [kamailio/kamailio] htable race condition on expired keys (#1152)

[Daniel-Constantin Mierla]

Do you have an event_route for expired htable items in your configuration file?

I do not see at a very quick check how the removed code is causing an issue, unless there are executions with mode==0 of ht_cell_value_add(), so the lock is not acquired. As a matter of fact, that mode stuff should be removed, because the htable locks are re-entrant now.

The check for expired items needs to be done at that moment, otherwise one can increment/decrement an expired item, because the auto-expire routine is done on a timer based, on an interval basis.

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