(gdb) bt
#0  0x00002b35bd241de6 in __memcmp_sse4_1 () from /lib64/libc.so.6
#1  0x000000000049834f in edns_opt_compare (q=0x2b35da1897b8, p=0x2b35da1897b8) at util/data/msgreply.c:1207
#2  edns_opt_list_compare (p=0x2b35da1897b8, q=0x2b35da1897b8) at util/data/msgreply.c:1215
#3  0x000000000046a15c in serviced_cmp (key1=0x2b35da190ed0, key2=0x2b35da190ed0) at services/outside_network.c:144
#4  0x000000000048c48a in rbtree_find_less_equal (rbtree=<optimized out>, key=<optimized out>, result=<optimized out>) at util/rbtree.c:527
#5  0x000000000048c85e in rbtree_search (rbtree=rbtree@entry=0x2b35d81315c0, key=<optimized out>) at util/rbtree.c:285
#6  0x000000000048c8e0 in rbtree_delete (rbtree=0x2b35d81315c0, key=<optimized out>) at util/rbtree.c:333
#7  0x0000000000433635 in outnet_serviced_query_stop (sq=<optimized out>, cb_arg=<optimized out>, sq=<optimized out>)
    at services/outside_network.c:3480
#8  0x0000000000433667 in outbound_list_clear (list=list@entry=0x2b35da1a1af8) at services/outbound_list.c:60
#9  0x00000000004336aa in iter_clear (qstate=qstate@entry=0x2b35da1a1600, id=id@entry=2) at iterator/iterator.c:3999
#10 0x000000000048f2a5 in mesh_state_cleanup (mstate=0x2b35da1a15b0) at services/mesh.c:908
#11 mesh_state_delete (qstate=<optimized out>, qstate=<optimized out>) at services/mesh.c:950
#12 0x000000000049086d in mesh_make_new_space (mesh=0x2b35d83f9dd0, qbuf=0x2b35d8002cd0) at services/mesh.c:357
#13 0x0000000000445fa2 in mesh_new_client (qid=49977, rep=0x2b35bfb019f0, edns=0x2b35bfb01580, qflags=256, cinfo=0x0, qinfo=0x2b35bfb01560, 
    mesh=0x2b35d83f9dd0) at services/mesh.c:478
#14 worker_handle_request (c=c@entry=0x2b35d81180a0, arg=0x207b2e0, error=error@entry=0, repinfo=repinfo@entry=0x2b35bfb019f0)
    at daemon/worker.c:1528
#15 0x0000000000475051 in comm_point_udp_ancil_callback (fd=13, event=event@entry=2, arg=<optimized out>) at util/netevent.c:724
#16 0x00000000004ad5d7 in handle_select.41039 (base=0x2b35d8000930, wait=<optimized out>) at util/mini_event.c:220
#17 0x000000000046c141 in minievent_base_dispatch (base=0x2b35d8000930) at util/mini_event.c:242
#18 ub_event_base_dispatch (base=0x2b35d8000930) at util/ub_event.c:280
#19 comm_base_dispatch (b=<optimized out>) at util/netevent.c:256
#20 0x000000000045602e in worker_work (worker=0x207b2e0) at daemon/worker.c:1921
#21 thread_start.6895 (arg=0x207b2e0) at daemon/daemon.c:541
#22 0x00002b35bcec3dd5 in start_thread () from /lib64/libpthread.so.0