unbound 1.20.0 segmentation fault with nghttp2 

Hello,
After upgrade unbound from 1.19.3 to 1.20.0 we have SIGSEGV in randomly moment, but all gathered traces about one place. 
This [line](https://github.com/NLnetLabs/unbound/blob/release-1.20.0/services/mesh.c#L2081) has struct `cp` and it's ok, but `n->query_reply.c` has invalid memory address. Details:
(disclaimer: all lines near function don't equal upstream code, because we have a few internal patch)
gdb:
```
Program terminated with signal SIGSEGV, Segmentation fault.
[Current thread is 1 (Thread 0x7f1dd82cf640 (LWP 87))]
(gdb) bt
#0  mesh_state_remove_reply (mesh=0x5717bfc8d200, m=0x5717be438040, cp=0x57180b3b5a00)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/services/mesh.c:2092
#1  0x00000000008c8fb9 in http2_stream_delete (h2_session=0x57181cb27e70, h2_stream=0x571ab0c4fc60)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/netevent.c:3293
#2  http2_stream_close_cb (session=<optimized out>, stream_id=<optimized out>, error_code=<optimized out>, cb_arg=0x57181cb27e70)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/netevent.c:3363
#3  0x000000000086b8ef in nghttp2_session_close_stream (session=session@entry=0x571ab9221000, stream_id=5, error_code=8)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/nghttp2/lib/nghttp2_session.c:1496
#4  0x000000000086e3bc in nghttp2_session_on_rst_stream_received (session=0x571ab9221000, frame=0x571ab92212d8)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/nghttp2/lib/nghttp2_session.c:4554
#5  0x000000000087311f in session_process_rst_stream_frame (session=0x5717bfc8d200, session@entry=0x571ab9221000)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/nghttp2/lib/nghttp2_session.c:4569
#6  0x0000000000871e36 in nghttp2_session_mem_recv2 (session=session@entry=0x571ab9221000, 
    in=0x7f1dd82caa3d "ۂ͇\004\377\017bJ\220\267kKg\257\362J\221\004\060\303v\030a\273\f0\303\f0݄Yg$\333Q\033?\264]\304\031\307\313\305\342U\302\030p`\206\035\220Ûl0\303\f0\303\r\335\360\303\342\035\376!\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\206\030a\314\313\312\311\310\307\306\305\304\303\302\301\277\316~\317\352_Q\032H\031\373I\251,\001e\227\032i\340\270Ӯ>\027\032\177\356CLT&", 
    in@entry=0x7f1dd82caa30 "", inlen=13) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/nghttp2/lib/nghttp2_session.c:6548
#7  0x0000000000873375 in nghttp2_session_recv (session=0x571ab9221000) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/nghttp2/lib/nghttp2_session.c:7366
#8  0x00000000008c6c48 in comm_point_http2_handle_read (fd=3932, c=0x57180b3b5a00) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/netevent.c:3452
#9  comm_point_http_handle_read (fd=3932, c=0x57180b3b5a00) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/netevent.c:3503
#10 comm_point_http_handle_callback (fd=3932, event=2, arg=0x57180b3b5a00) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/netevent.c:3890
#11 0x000000000058f448 in event_persist_closure (base=0x5717bf7c0580, ev=<optimized out>) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/libevent/event.c:1623
#12 event_process_active_single_queue (base=0x5717bf7c0580, activeq=0x5717bfc0d300, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0)
    at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/libevent/event.c:1682
#13 0x000000000058beec in event_process_active (base=0x5717bf7c0580) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/libevent/event.c:1783
#14 event_base_loop (base=0x5717bf7c0580, flags=flags@entry=0) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/libevent/event.c:2006
#15 0x000000000058b8c7 in event_base_dispatch (event_base=0x5717bfc8d200) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/libs/libevent/event.c:1817
#16 0x00000000004ecec5 in ub_event_base_dispatch (base=0x5717bfc8d200) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/ub_event.c:280
#17 0x00000000008c537c in comm_base_dispatch (b=<optimized out>) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/util/netevent.c:282
#18 0x00000000004ebde9 in worker_work (worker=worker@entry=0x5717bf447800) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/daemon/worker.c:2357
#19 0x00000000004dc041 in thread_start (arg=0x5717bf447800) at /place/sandbox-data/tasks/1/5/2358437651/fake-svn-root/arcadia/contrib/tools/unbound/daemon/daemon.c:638
#20 0x00007f1dda473b43 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#21 0x00007f1dda505a00 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
-----
(gdb) print *cp
$32 = {ev = 0x55baa0fcc3e0, event_added = 0, socket = 0x55b9ffdc2260, fd = 4800, timeout = 0x55baa0fcc3f0, buffer = 0x55baded71bc0, tcp_is_reading = 1, tcp_byte_count = 0, tcp_parent = 0x55ba9dd48d00, 
  repinfo = {c = 0x55bad71e8500, remote_addr = {ss_family = 2, __ss_align = 0, __ss_padding = '\000' <repeats 111 times>}, remote_addrlen = 16, srctype = 0, client_nonce = '\000' <repeats 11 times>, 
    nmkey = '\000' <repeats 31 times>, dnsc_cert = 0x0, is_dnscrypted = 0, pktinfo = {v6info = {ipi6_addr = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, 
            __u6_addr32 = {0, 0, 0, 0}}}, ipi6_ifindex = 0}, v4info = {ipi_ifindex = 0, ipi_spec_dst = {s_addr = 0}, ipi_addr = {s_addr = 0}}}, max_udp_size = 4096, is_proxied = 0, client_addr = {
      ss_family = 2, __ss_align = 0, __ss_padding = '\000' <repeats 111 times>}, client_addrlen = 16}, max_tcp_count = 0, cur_tcp_count = 0, tcp_handlers = 0x0, tcp_free = 0x0, ssl = 0x0, 
  ssl_shake_state = comm_ssl_shake_none, http_min_version = http_version_2, http_endpoint = 0x55baa0fcc400 "/dns-query", http_in_headers = 0, http_in_chunk_headers = 0, http_is_chunked = 0, 
  http_temp = 0x0, http_stored = 0, h2_session = 0x55baded7a050, use_h2 = 1, h2_stream = 0x0, http2_stream_max_qbuffer_size = 512, http2_max_streams = 10, dtenv = 0x0, type = comm_http, pp2_enabled = 0, 
  pp2_header_state = pp2_header_none, do_not_close = 0, tcp_do_close = 1, tcp_write_and_read = 0, tcp_write_byte_count = 0, tcp_write_pkt = 0x0, tcp_write_pkt_len = 0, tcp_more_read_again = 0x0, 
  tcp_more_write_again = 0x0, tcp_do_toggle_rw = 0, tcp_timeout_msec = 30000, tcp_keepalive = 0, tcp_check_nb_connect = 0, tcp_conn_limit = 0x55b9ffdc2400, tcl_addr = 0x0, tcp_req_info = 0x0, 
  dnscrypt = 0, dnscrypt_buffer = 0x0, inuse = 0, recv_tv = {tv_sec = 0, tv_usec = 0}, callback = 0x4e81f0 <worker_handle_request>, cb_arg = 0x55b9ff443000}
----
(gdb) print m->reply_list
$34 = (struct mesh_reply *) 0xadae520a61780555
(gdb) print *m->reply_list
Cannot access memory at address 0xadae520a61780555
``` 

I rebuilt unbound with address sanitizer and gathered trace:
```
==700336==ERROR: AddressSanitizer: heap-use-after-free on address 0x62900bd064c0 at pc 0x000001532b07 bp 0x7f4d897a9cb0 sp 0x7f4d897a9c90
READ of size 8 at 0x62900bd064c0 thread T13
    #0 0x1532b06  (/unbound-1.20-sanitizer+0x1532b06) mesh_state_remove_reply unbound/services/mesh.c:2087 
    #1 0x164749f  (/unbound-1.20-sanitizer+0x164749f) http2_stream_delete unbound/util/netevent.c:3293 
    #2 0x1652e10  (/unbound-1.20-sanitizer+0x1652e10) http2_session_server_delete unbound/util/netevent.c:3318 
    #3 0x164176a  (/unbound-1.20-sanitizer+0x164176a) comm_point_close unbound/util/netevent.c:4684 
    #4 0x1648c08  (/unbound-1.20-sanitizer+0x1648c08) reclaim_http_handler unbound/util/netevent.c:2906 
    #5 0x164025d  (/unbound-1.20-sanitizer+0x164025d) comm_point_http_handle_callback unbound/util/netevent.c:3891 
    #6 0x9dc58f  (/unbound-1.20-sanitizer+0x9dc58f) event_persist_closure contrib/libs/libevent/event.c:1623 
    #7 0x9d9e1a  (/unbound-1.20-sanitizer+0x9d9e1a) event_process_active_single_queue contrib/libs/libevent/event.c:1682 
    #8 0x9ca2b2  (/unbound-1.20-sanitizer+0x9ca2b2) event_process_active contrib/libs/libevent/event.c:1783 
    #9 0x9c6d9e  (/unbound-1.20-sanitizer+0x9c6d9e) event_base_loop contrib/libs/libevent/event.c:2006 
    #10 0x9c6176  (/unbound-1.20-sanitizer+0x9c6176) event_base_dispatch contrib/libs/libevent/event.c:1817 
    #11 0x811094  (/unbound-1.20-sanitizer+0x811094) ub_event_base_dispatch unbound/util/ub_event.c:280 
    #12 0x163623e  (/unbound-1.20-sanitizer+0x163623e) comm_base_dispatch unbound/util/netevent.c:282 
    #13 0x8091dd  (/unbound-1.20-sanitizer+0x8091dd) worker_work unbound/daemon/worker.c:2357 
    #14 0x7c079e  (/unbound-1.20-sanitizer+0x7c079e) thread_start unbound/daemon/daemon.c:638 
    #15 0x90b833  (/unbound-1.20-sanitizer+0x90b833) _ZN6__asan10AsanThread11ThreadStartEy /-S/contrib/libs/clang16-rt/lib/asan/asan_thread.cpp:277 
    #16 0x8ca076  (/unbound-1.20-sanitizer+0x8ca076) _ZL17asan_thread_startPv /-S/contrib/libs/clang16-rt/lib/asan/asan_interceptors.cpp:199 
    #17 0x7f4d980e0b42  (/lib/x86_64-linux-gnu/libc.so.6+0x94b42) (BuildId: 69389d485a9793dbe873f0ea2c93e02efaa9aa3d)
    #18 0x7f4d981729ff  (/lib/x86_64-linux-gnu/libc.so.6+0x1269ff) (BuildId: 69389d485a9793dbe873f0ea2c93e02efaa9aa3d)

0x62900bd064c0 is located 704 bytes inside of 16384-byte region [0x62900bd06200,0x62900bd0a200)
freed by thread T13 here:
    #0 0x8fc090  (/unbound-1.20-sanitizer+0x8fc090) free /-S/contrib/libs/clang16-rt/lib/asan/asan_malloc_linux.cpp:52 
    #1 0x166cb1d  (/unbound-1.20-sanitizer+0x166cb1d) regional_destroy unbound/util/regional.c:141 
    #2 0x15c4e90  (/unbound-1.20-sanitizer+0x15c4e90) alloc_reg_release unbound/util/alloc.c:345 
    #3 0x15251c1  (/unbound-1.20-sanitizer+0x15251c1) mesh_state_cleanup unbound/services/mesh.c:990 
    #4 0x151cbc8  (/unbound-1.20-sanitizer+0x151cbc8) mesh_state_delete unbound/services/mesh.c:1028 
    #5 0x1531987  (/unbound-1.20-sanitizer+0x1531987) mesh_continue unbound/services/mesh.c:1922 
    #6 0x1522867  (/unbound-1.20-sanitizer+0x1522867) mesh_run unbound/services/mesh.c:1953 
    #7 0x15247f8  (/unbound-1.20-sanitizer+0x15247f8) mesh_report_reply unbound/services/mesh.c:856 
    #8 0x7f0ca7  (/unbound-1.20-sanitizer+0x7f0ca7) worker_handle_service_reply unbound/daemon/worker.c:269 
    #9 0x156217a  (/unbound-1.20-sanitizer+0x156217a) serviced_callbacks unbound/services/outside_network.c:3051 
    #10 0x1566ee8  (/unbound-1.20-sanitizer+0x1566ee8) serviced_udp_callback unbound/services/outside_network.c:3392 
    #11 0x1554c52  (/unbound-1.20-sanitizer+0x1554c52) outnet_udp_cb unbound/services/outside_network.c:1537 
    #12 0x163d645  (/unbound-1.20-sanitizer+0x163d645) comm_point_udp_callback unbound/util/netevent.c:1145 
    #13 0x9dc58f  (/unbound-1.20-sanitizer+0x9dc58f) event_persist_closure contrib/libs/libevent/event.c:1623 
    #14 0x9d9e1a  (/unbound-1.20-sanitizer+0x9d9e1a) event_process_active_single_queue contrib/libs/libevent/event.c:1682 
    #15 0x9ca2b2  (/unbound-1.20-sanitizer+0x9ca2b2) event_process_active contrib/libs/libevent/event.c:1783 
    #16 0x9c6d9e  (/unbound-1.20-sanitizer+0x9c6d9e) event_base_loop contrib/libs/libevent/event.c:2006 
    #17 0x9c6176  (/unbound-1.20-sanitizer+0x9c6176) event_base_dispatch contrib/libs/libevent/event.c:1817 
    #18 0x811094  (/unbound-1.20-sanitizer+0x811094) ub_event_base_dispatch unbound/util/ub_event.c:280 
    #19 0x163623e  (/unbound-1.20-sanitizer+0x163623e) comm_base_dispatch unbound/util/netevent.c:282 
    #20 0x8091dd  (/unbound-1.20-sanitizer+0x8091dd) worker_work unbound/daemon/worker.c:2357 
    #21 0x7c079e  (/unbound-1.20-sanitizer+0x7c079e) thread_start unbound/daemon/daemon.c:638 
    #22 0x90b833  (/unbound-1.20-sanitizer+0x90b833) _ZN6__asan10AsanThread11ThreadStartEy /-S/contrib/libs/clang16-rt/lib/asan/asan_thread.cpp:277 

previously allocated by thread T13 here:
    #0 0x8fc3c3  (/unbound-1.20-sanitizer+0x8fc3c3) malloc /-S/contrib/libs/clang16-rt/lib/asan/asan_malloc_linux.cpp:69 
    #1 0x166c79c  (/unbound-1.20-sanitizer+0x166c79c) regional_create_custom_large_object unbound/util/regional.c:94 
    #2 0x166c75c  (/unbound-1.20-sanitizer+0x166c75c) regional_create_custom unbound/util/regional.c:108 
    #3 0x15c4df6  (/unbound-1.20-sanitizer+0x15c4df6) alloc_reg_obtain unbound/util/alloc.c:338 
    #4 0x15676f2  (/unbound-1.20-sanitizer+0x15676f2) outnet_serviced_query unbound/services/outside_network.c:3418 
    #5 0x808e96  (/unbound-1.20-sanitizer+0x808e96) worker_send_query unbound/daemon/worker.c:2417 
    #6 0x13d615d  (/unbound-1.20-sanitizer+0x13d615d) processQueryTargets unbound/iterator/iterator.c:3003 
    #7 0x13c42ea  (/unbound-1.20-sanitizer+0x13c42ea) iter_handle unbound/iterator/iterator.c:4148 
    #8 0x13c33b0  (/unbound-1.20-sanitizer+0x13c33b0) iter_operate unbound/iterator/iterator.c:4413 
    #9 0x15225c4  (/unbound-1.20-sanitizer+0x15225c4) mesh_run unbound/services/mesh.c:1943 
    #10 0x151ecce  (/unbound-1.20-sanitizer+0x151ecce) mesh_new_client unbound/services/mesh.c:559 
    #11 0x7fa779  (/unbound-1.20-sanitizer+0x7fa779) worker_handle_request unbound/daemon/worker.c:1946 
    #12 0x1493164  (/unbound-1.20-sanitizer+0x1493164) tcp_req_info_handle_readdone unbound/services/listen_dnsport.c:2241 
    #13 0x1656fb6  (/unbound-1.20-sanitizer+0x1656fb6) tcp_callback_reader unbound/util/netevent.c:1575 
    #14 0x1659406  (/unbound-1.20-sanitizer+0x1659406) ssl_handle_read unbound/util/netevent.c:2019 
    #15 0x1656d77  (/unbound-1.20-sanitizer+0x1656d77) ssl_handle_it unbound/util/netevent.c:2188 
    #16 0x16427bc  (/unbound-1.20-sanitizer+0x16427bc) comm_point_tcp_handle_read unbound/util/netevent.c:2206 
    #17 0x16448ec  (/unbound-1.20-sanitizer+0x16448ec) tcp_req_info_read_again unbound/util/netevent.c:2740 
    #18 0x164100e  (/unbound-1.20-sanitizer+0x164100e) comm_point_tcp_handle_callback unbound/util/netevent.c:2863 
    #19 0x9dc58f  (/unbound-1.20-sanitizer+0x9dc58f) event_persist_closure contrib/libs/libevent/event.c:1623 
    #20 0x9d9e1a  (/unbound-1.20-sanitizer+0x9d9e1a) event_process_active_single_queue contrib/libs/libevent/event.c:1682 
    #21 0x9ca2b2  (/unbound-1.20-sanitizer+0x9ca2b2) event_process_active contrib/libs/libevent/event.c:1783 
    #22 0x9c6d9e  (/unbound-1.20-sanitizer+0x9c6d9e) event_base_loop contrib/libs/libevent/event.c:2006 
    #23 0x9c6176  (/unbound-1.20-sanitizer+0x9c6176) event_base_dispatch contrib/libs/libevent/event.c:1817 
    #24 0x811094  (/unbound-1.20-sanitizer+0x811094) ub_event_base_dispatch unbound/util/ub_event.c:280 
    #25 0x163623e  (/unbound-1.20-sanitizer+0x163623e) comm_base_dispatch unbound/util/netevent.c:282 
    #26 0x8091dd  (/unbound-1.20-sanitizer+0x8091dd) worker_work unbound/daemon/worker.c:2357 
    #27 0x7c079e  (/unbound-1.20-sanitizer+0x7c079e) thread_start unbound/daemon/daemon.c:638 
    #28 0x90b833  (/unbound-1.20-sanitizer+0x90b833) _ZN6__asan10AsanThread11ThreadStartEy /-S/contrib/libs/clang16-rt/lib/asan/asan_thread.cpp:277 

Thread T13 created by T0 here:
    #0 0x8c9f44  (/unbound-1.20-sanitizer+0x8c9f44) pthread_create /-S/contrib/libs/clang16-rt/lib/asan/asan_interceptors.cpp:208 
    #1 0x7bd81c  (/unbound-1.20-sanitizer+0x7bd81c) daemon_start_others unbound/daemon/daemon.c:654 
    #2 0x7bbb9e  (/unbound-1.20-sanitizer+0x7bbb9e) daemon_fork unbound/daemon/daemon.c:809 
    #3 0x7eb5b9  (/unbound-1.20-sanitizer+0x7eb5b9) run_daemon unbound/daemon/unbound.c:738 
    #4 0x7eaa26  (/unbound-1.20-sanitizer+0x7eaa26) main unbound/daemon/unbound.c:851 
    #5 0x7f4d98075d8f  (/lib/x86_64-linux-gnu/libc.so.6+0x29d8f) (BuildId: 69389d485a9793dbe873f0ea2c93e02efaa9aa3d)

SUMMARY: AddressSanitizer: heap-use-after-free (/unbound-1.20-sanitizer+0x1532b06) (BuildId: b6a712a2d6582d398a0eafb6b2ec52327de2c225) 
Shadow bytes around the buggy address:
  0x62900bd06200: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06280: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06300: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06380: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06400: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x62900bd06480: fd fd fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd
  0x62900bd06500: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06580: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06600: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06680: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x62900bd06700: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==700336==ABORTING
```

For clarity, that line 
`0 0x1532b06  (/unbound-1.20-sanitizer+0x1532b06) mesh_state_remove_reply unbound/services/mesh.c:2087`
it's [this place](https://github.com/NLnetLabs/unbound/blob/release-1.20.0/services/mesh.c#L2076) in upstream 

----
I think it's some sort of race in libevent model and unbound with nghttp2. But i couldn't reproduce on test stand, only on user activity(after 1k rps) and this happens rarely at random moments, maybe one time per day.

**System:**
 - Unbound version: 1.20.0
 - OS: Ubuntu 22.04.2 LTS
 - `unbound -V` output:
```
Version 1.20.0
Configure line: --disable-static --prefix=/var/empty/unbound-1.20.0 --bindir=/var/empty/tmp/out/bin --sbindir=/var/empty/tmp/out/sbin --includedir=/var/empty/tmp/out/include --oldincludedir=/var/empty/tmp/out/include --mandir=/var/empty/tmp/out/share/man --infodir=/var/empty/tmp/out/share/info --docdir=/var/empty/tmp/out/share/doc/unbound --libdir=/var/empty/tmp/out/lib --libexecdir=/var/empty/tmp/out/libexec --localedir=/var/empty/tmp/out/share/locale --disable-rpath --enable-dnstap --enable-dnscrypt --enable-subnet --enable-systemd --libdir=/usr/lib --prefix= --with-libevent=/var/empty/libevent-2.1.12-dev --with-pidfile=/run/unbound.pid --with-rootkey-file=/var/lib/unbound/root.key --with-ssl=/var/empty/openssl-1.1.1o-dev --with-username= --with-libnghttp2=/var/empty/nghttp2-1.62.0
Linked libs: libevent 2.1.12-stable (it uses epoll), OpenSSL 1.1.1t  7 Feb 2023
Linked modules: dns64 subnetcache respip validator iterator
DNSCrypt feature available
```
 - nghttp2 version 1.62.0


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unbound 1.20.0 segmentation fault with nghttp2 #1103

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