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Make netmgr tcpdns send calls asynchronous

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isc__nm_tcpdns_send() was not asynchronous and accessed socket
internal fields in an unsafe manner, which could lead to a race
condition and subsequent crash. Fix it by moving tcpdns processing
to a proper netmgr thread.
This commit is contained in:
Evan Hunt
2020-06-22 16:45:47 -07:00
parent 1cf65cd882
commit 591b79b597
3 changed files with 72 additions and 39 deletions
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3
lib/isc/netmgr/netmgr.c
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@@ -621,6 +621,9 @@ process_queue(isc__networker_t *worker, isc_queue_t *queue) {
case netievent_tcpsend:
isc__nm_async_tcpsend(worker, ievent);
break;
case netievent_tcpdnssend:
isc__nm_async_tcpdnssend(worker, ievent);
break;
case netievent_tcpstop:
isc__nm_async_tcpstop(worker, ievent);
break;