New XG-7100 crash after unbound configuration

[bhjitsense]

I'm trying to troubleshoot another issue, and in the process was making some changes to Unbound. It seems whenever I make a change (ex: toggle DNSSEC support, add/remove an interface) the whole box crashes. I can't log in, not even via SSH. The last thing I see though is a kernel swap_pager: out of swap space error. I have to hard reboot then.

Memory usually hovers around 85%. The config on this box was copied from an SG-3100. I am using pfBlockerNG with several DNSBL feeds as well as TLD enabled.

I realize this may not just be DNS related so I can repost if necessary.

I want to add that I am seeing that the unbound service is restarting often. Logs for the curious;

Sep 9 12:11:24 	unbound 	36218:0 	debug: duplicate acl address ignored.
Sep 9 12:11:22 	unbound 	36218:0 	notice: Restart of unbound 1.9.1.
Sep 9 12:11:22 	unbound 	36218:0 	debug: cache memory msg=66072 rrset=66072 infra=8057 val=66288
Sep 9 12:11:22 	unbound 	36218:0 	info: mesh has 1 recursion states (1 with reply, 0 detached), 1 waiting replies, 0 recursion replies sent, 0 replies dropped, 0 states jostled out
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 3: requestlist max 0 avg 0 exceeded 0 jostled 0
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 3: 1 queries, 0 answers from cache, 1 recursions, 0 prefetch, 0 rejected by ip ratelimiting
Sep 9 12:11:22 	unbound 	36218:0 	debug: cache memory msg=66072 rrset=66072 infra=8057 val=66288
Sep 9 12:11:22 	unbound 	36218:0 	info: mesh has 1 recursion states (1 with reply, 0 detached), 1 waiting replies, 0 recursion replies sent, 0 replies dropped, 0 states jostled out
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 2: requestlist max 0 avg 0 exceeded 0 jostled 0
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 2: 1 queries, 0 answers from cache, 1 recursions, 0 prefetch, 0 rejected by ip ratelimiting
Sep 9 12:11:22 	unbound 	36218:0 	debug: cache memory msg=66072 rrset=66072 infra=8057 val=66288
Sep 9 12:11:22 	unbound 	36218:0 	info: mesh has 1 recursion states (1 with reply, 0 detached), 2 waiting replies, 0 recursion replies sent, 0 replies dropped, 0 states jostled out
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 1: requestlist max 1 avg 0.5 exceeded 0 jostled 0
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 1: 2 queries, 0 answers from cache, 2 recursions, 0 prefetch, 0 rejected by ip ratelimiting
Sep 9 12:11:22 	unbound 	36218:0 	debug: cache memory msg=66072 rrset=66072 infra=8057 val=66288
Sep 9 12:11:22 	unbound 	36218:0 	info: mesh has 0 recursion states (0 with reply, 0 detached), 0 waiting replies, 0 recursion replies sent, 0 replies dropped, 0 states jostled out
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 0: requestlist max 0 avg 0 exceeded 0 jostled 0
Sep 9 12:11:22 	unbound 	36218:0 	info: server stats for thread 0: 0 queries, 0 answers from cache, 0 recursions, 0 prefetch, 0 rejected by ip ratelimiting
Sep 9 12:11:22 	unbound 	36218:0 	info: service stopped (unbound 1.9.1).

[stephenw10]

Yeah that's not likely to be Unbound. It's exhausting the RAM and swap space (if you have an SSD) so something is using far more than expected.
Try running top -aSH at the command line to see what is using it if this is still an issue.

Steve