Discovered case: TCP write towards upstream fails due to ECONNRESET, and on this place of code we "forget" the whole qr_task and thus its corresponding kr_request, so it remains unanswered and using memory.
Discovered case: TCP write towards upstream fails due to ECONNRESET, and on this place of code we "forget" the whole qr_task and thus its corresponding kr_request, so it remains unanswered and using memory.