BIND 9.12.1 process hang
Summary
BIND 9.12.1 hung, and stopped responding to queries, but didn't die.
Steps to reproduce
unknown
What is the current bug behavior?
The BIND process stopped responding to queries. A kill -9 was required to stop the process - a normal "kill" didn't work.
Unfortunately I had already stopped it before @wpk suggested getting a core dump.
What is the expected correct behavior?
BIND doesn't hang :p
Relevant configuration files
Trivial validating resolver configuration, on the ISC open resolver.
options {
max-cache-size 200M;
allow-query-cache { any; };
allow-recursion { any; };
max-udp-size 1024;
edns-udp-size 1024;
dnssec-enable yes;
dnssec-validation auto;
};Relevant logs and/or screenshots
14-May-2018 05:17:19.138 validating ./SOA: got insecure response; parent indicates it should be secure
14-May-2018 05:17:19.162 shutting down
14-May-2018 05:17:19.162 stopping statistics channel on 127.0.0.1#9004
14-May-2018 05:17:19.162 stopping command channel on 127.0.0.1#8004
14-May-2018 05:17:19.237 no longer listening on 127.0.0.1#5004Possible fixes
No idea.