Core was generated by `/usr/sbin/unbound -d -c /etc/unbound-upper/unbound.conf'.
Program terminated with signal SIGSEGV, Segmentation fault.
warning: Section `.reg-xstate/345613' in core file too small.
#0  0x000055e76da1b539 in alloc_reg_obtain (alloc=0x55e76eb23650) at util/alloc.c:333
333     util/alloc.c: No such file or directory.
[Current thread is 1 (Thread 0x7f32d199f740 (LWP 345613))]
(gdb) bt
#0  0x000055e76da1b539 in alloc_reg_obtain (alloc=0x55e76eb23650) at util/alloc.c:333
#1  outnet_serviced_query (callback=<optimized out>, was_ratelimited=0x7ffd9a229670, env=0x55e76eb24b00, buff=0x55e76ecd8760, 
    callback_arg=0x55e76f4d9da0, qstate=0x55e76f4d8800, zonelen=15, zone=0x55e76f4d8bd8 "\tawsdns-49\003org", addrlen=28, addr=0x55e76f4d9870,
    tls_auth_name=0x0, ssl_upstream=0, tcp_upstream=0, check_ratelimit=1, nocaps=0, want_dnssec=0, dnssec=32784, flags=16, 
    qinfo=0x55e76f4d8b50, outnet=0x55e76ecd8490) at services/outside_network.c:3359
#2  worker_send_query (qinfo=0x55e76f4d8b50, flags=<optimized out>, dnssec=32784, want_dnssec=0, nocaps=0, check_ratelimit=1, 
    addr=0x55e76f4d9870, addrlen=28, zone=0x55e76f4d8bd8 "\tawsdns-49\003org", zonelen=15, tcp_upstream=0, ssl_upstream=0, tls_auth_name=0x0, 
    q=0x55e76f4d8800, was_ratelimited=0x7ffd9a229670) at daemon/worker.c:2196
#3  0x000055e76da266d2 in processQueryTargets (qstate=<optimized out>, iq=<optimized out>, ie=<optimized out>, id=<optimized out>)
    at iterator/iterator.c:2642
#4  0x000055e76da2d2ca in iter_handle (qstate=<optimized out>, iq=0x55e76f4d8a50, ie=0x55e76e6a6900, id=<optimized out>)
    at iterator/iterator.c:3717
#5  0x000055e76da39def in mesh_run (mesh=0x55e76f520870, mstate=0x55e76f4d87b0, ev=<optimized out>, e=0x0) at services/mesh.c:1880
#6  0x000055e76da0ad44 in mesh_report_reply (what=0, reply=0x7ffd9a229cd0, e=0x55e76f4843a8, mesh=<optimized out>) at services/mesh.c:889
#7  worker_handle_service_reply (c=0x55e76f346ec0, arg=0x55e76f4843a8, error=0, reply_info=0x7ffd9a229cd0) at daemon/worker.c:266
#8  0x000055e76da83f8f in serviced_callbacks (sq=<optimized out>, error=0, c=0x55e76f346ec0, rep=<optimized out>)
    at services/outside_network.c:2993
#9  0x000055e76da84d70 in serviced_udp_callback (c=0x55e76f346ec0, arg=0x55e76e4fea40, error=error@entry=0, rep=rep@entry=0x7ffd9a229cd0)
    at services/outside_network.c:3333
#10 0x000055e76da807ec in outnet_udp_cb (c=<optimized out>, arg=0x55e76ecd8490, error=<optimized out>, reply_info=0x7ffd9a229cd0)
    at services/outside_network.c:1466
#11 0x000055e76da78d5d in comm_point_udp_callback (fd=277, event=<optimized out>, arg=<optimized out>) at util/netevent.c:784
#12 0x00007f32d1ea8b4f in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#13 0x00007f32d1ea928f in event_base_loop () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#14 0x000055e76daa1a29 in ub_event_base_dispatch (base=<optimized out>) at util/ub_event.c:280
#15 comm_base_dispatch.isra.0 (b=<optimized out>, b=<optimized out>) at util/netevent.c:256
#16 0x000055e76d9fb5af in worker_work (worker=<optimized out>) at daemon/worker.c:2135
#17 daemon_fork (daemon=<optimized out>) at daemon/daemon.c:701
#18 0x000055e76d9f43b8 in run_daemon (need_pidfile=1, debug_mode=1, cmdline_verbose=0, 
    cfgfile=0x7ffd9a22bf02 "/etc/unbound-upper/unbound.conf") at daemon/unbound.c:736
#19 main (argc=<optimized out>, argv=<optimized out>) at daemon/unbound.c:838