uv_start_read() may get called with a closed tcp session
uv_start_read() may get called with a closed tcp session:
There may be a timing issue in BIND 9.18.? BIND could crash if a tcp connected was closed or reset in the time between the TCP connection is established and isc_nm_read() is called.
The callback tcp_connected() calls isc_nm_read() which schedules isc__nm_async_tcpdnsread() on the nmworker loop.
If the connection is closed in the meantime uv_start_read() is called in the next iteration of the loop