$ /usr/pkg/sbin/unbound -V
Version 1.22.0
Configure line: --enable-allsymbols --with-libexpat=/usr --with-libevent=/usr --enable-event-api --with-ssl=/usr --with-syslog-facility= --with-pidfile=/var/run/unbound/unbound.pid --sysconfdir=/usr/pkg/etc --enable-dnstap --with-libnghttp2=/usr/pkg --enable-gost --enable-sha2 --prefix=/usr/pkg --build=x86_64--netbsd --host=x86_64--netbsd --mandir=/usr/pkg/man --enable-option-checking=yes
Linked libs: pluggable-libevent 2.1.12-stable (it uses kqueue), OpenSSL 3.0.15 3 Sep 2024
Linked modules: dns64 respip validator iterator
BSD licensed, see LICENSE in source package for details.
Report bugs to unbound-bugs@nlnetlabs.nl or https://github.com/NLnetLabs/unbound/issues
$ 
$ pkg_info | grep nghttp2
nghttp2-1.65.0      Implementation of HTTP/2 in C
$ 

# /usr/pkg/sbin/unbound -d -c /usr/pkg/etc/unbound/unbound.conf
==28280==Installed the sigaction for signal 11
==28280==Installed the sigaction for signal 10
==28280==Installed the sigaction for signal 8
[1744187191] unbound[28280:0] warning: the ulimit(data seg size) is smaller than the expected memory usage (added size of caches). 268435456 < 3762184960 bytes
==21602==Processing thread 28280.
==21602==Stack at 0x7f7fffff0000-0x7f7ffffff000 (SP = 0x7f7fffffe458).
=================================================================
==28280==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 3785952 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7952e49  (/usr/lib/liblsan.so.3+0x8e49)
    #1 0x7f7ff72a4e4a  (/usr/pkg/lib/libnghttp2.so.14+0x9e4a)
    #2 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #3 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #4 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #5 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #6 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #7 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #8 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Direct leak of 1296336 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7952e49  (/usr/lib/liblsan.so.3+0x8e49)
    #1 0x7f7ff72a4e4a  (/usr/pkg/lib/libnghttp2.so.14+0x9e4a)
    #2 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #3 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #4 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #5 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #6 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #7 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #8 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #9 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #10 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 22886024 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7951b51  (/usr/lib/liblsan.so.3+0x7b51)
    #1 0x7f7ff72a37af  (/usr/pkg/lib/libnghttp2.so.14+0x87af)
    #2 0x7f7ff72a3862  (/usr/pkg/lib/libnghttp2.so.14+0x8862)
    #3 0x7f7ff72a3ac9  (/usr/pkg/lib/libnghttp2.so.14+0x8ac9)
    #4 0x7f7ff72a518d  (/usr/pkg/lib/libnghttp2.so.14+0xa18d)
    #5 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #6 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #7 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #8 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #9 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #10 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #11 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 7836332 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7951b51  (/usr/lib/liblsan.so.3+0x7b51)
    #1 0x7f7ff72a37af  (/usr/pkg/lib/libnghttp2.so.14+0x87af)
    #2 0x7f7ff72a3862  (/usr/pkg/lib/libnghttp2.so.14+0x8862)
    #3 0x7f7ff72a3ac9  (/usr/pkg/lib/libnghttp2.so.14+0x8ac9)
    #4 0x7f7ff72a518d  (/usr/pkg/lib/libnghttp2.so.14+0xa18d)
    #5 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #6 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #7 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #8 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #9 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #10 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #11 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #12 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #13 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 1429504 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72b0be4  (/usr/pkg/lib/libnghttp2.so.14+0x15be4)
    #2 0x7f7ff72a5134  (/usr/pkg/lib/libnghttp2.so.14+0xa134)
    #3 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #4 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #5 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #6 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #7 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #8 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #9 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 1429504 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72b0ac9  (/usr/pkg/lib/libnghttp2.so.14+0x15ac9)
    #2 0x7f7ff72a5117  (/usr/pkg/lib/libnghttp2.so.14+0xa117)
    #3 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #4 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #5 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #6 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #7 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #8 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #9 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 489472 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72b0be4  (/usr/pkg/lib/libnghttp2.so.14+0x15be4)
    #2 0x7f7ff72a5134  (/usr/pkg/lib/libnghttp2.so.14+0xa134)
    #3 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #4 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #5 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #6 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #7 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #8 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #9 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #10 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #11 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 489472 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72b0ac9  (/usr/pkg/lib/libnghttp2.so.14+0x15ac9)
    #2 0x7f7ff72a5117  (/usr/pkg/lib/libnghttp2.so.14+0xa117)
    #3 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #4 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #5 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #6 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #7 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #8 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #9 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #10 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #11 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 223360 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a826e  (/usr/pkg/lib/libnghttp2.so.14+0xd26e)
    #2 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #3 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #4 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #5 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #6 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #7 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 76480 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a826e  (/usr/pkg/lib/libnghttp2.so.14+0xd26e)
    #2 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #3 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #4 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #5 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #6 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #7 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #8 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #9 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 67008 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a3817  (/usr/pkg/lib/libnghttp2.so.14+0x8817)
    #2 0x7f7ff72a3ac9  (/usr/pkg/lib/libnghttp2.so.14+0x8ac9)
    #3 0x7f7ff72a518d  (/usr/pkg/lib/libnghttp2.so.14+0xa18d)
    #4 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #5 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #6 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #7 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #8 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #9 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #10 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 33504 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a82a9  (/usr/pkg/lib/libnghttp2.so.14+0xd2a9)
    #2 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #3 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #4 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #5 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #6 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #7 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 22944 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a3817  (/usr/pkg/lib/libnghttp2.so.14+0x8817)
    #2 0x7f7ff72a3ac9  (/usr/pkg/lib/libnghttp2.so.14+0x8ac9)
    #3 0x7f7ff72a518d  (/usr/pkg/lib/libnghttp2.so.14+0xa18d)
    #4 0x7f7ff72a54c7  (/usr/pkg/lib/libnghttp2.so.14+0xa4c7)
    #5 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)
    #6 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #7 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #8 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #9 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #10 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #11 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #12 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 11472 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a82a9  (/usr/pkg/lib/libnghttp2.so.14+0xd2a9)
    #2 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #3 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #4 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #5 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #6 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #7 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #8 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #9 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 11168 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a3272  (/usr/pkg/lib/libnghttp2.so.14+0x8272)
    #2 0x7f7ff72a828a  (/usr/pkg/lib/libnghttp2.so.14+0xd28a)
    #3 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #4 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #5 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #6 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #7 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #8 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 11168 byte(s) in 1396 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a3272  (/usr/pkg/lib/libnghttp2.so.14+0x8272)
    #2 0x7f7ff72a83be  (/usr/pkg/lib/libnghttp2.so.14+0xd3be)
    #3 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #4 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #5 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #6 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #7 0x17bbf  (/usr/pkg/sbin/unbound+0x16bbf)
    #8 0x7f7ff76f02e0  (/usr/lib/libpthread.so.1+0xd2e0)
Indirect leak of 3824 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a3272  (/usr/pkg/lib/libnghttp2.so.14+0x8272)
    #2 0x7f7ff72a83be  (/usr/pkg/lib/libnghttp2.so.14+0xd3be)
    #3 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #4 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #5 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #6 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #7 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #8 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #9 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #10 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
Indirect leak of 3824 byte(s) in 478 object(s) allocated from:
    #0 0x7f7ff7953299  (/usr/lib/liblsan.so.3+0x9299)
    #1 0x7f7ff72a3272  (/usr/pkg/lib/libnghttp2.so.14+0x8272)
    #2 0x7f7ff72a828a  (/usr/pkg/lib/libnghttp2.so.14+0xd28a)
    #3 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)
    #4 0x7f7ff77322db  (/usr/lib/libevent.so.5+0x382db)
    #5 0x7f7ff7732926  (/usr/lib/libevent.so.5+0x38926)
    #6 0x7f7ff78cef95  (/usr/pkg/lib/libunbound.so.8+0xc3f95)
    #7 0x18826  (/usr/pkg/sbin/unbound+0x17826)
    #8 0x37747  (/usr/pkg/sbin/unbound+0x36747)
    #9 0x140aa  (/usr/pkg/sbin/unbound+0x130aa)
    #10 0x7f7ff7ef5f57  (/usr/libexec/ld.elf_so+0xdf57)
SUMMARY: LeakSanitizer: 40107348 byte(s) leaked in 16866 allocation(s).
# 

    #3 0x7f7ff78d1333  (/usr/pkg/lib/libunbound.so.8+0xc6333)

    #2 0x7f7ff78d1376  (/usr/pkg/lib/libunbound.so.8+0xc6376)

(gdb) b main
Breakpoint 1 at 0x36290: file ./daemon/unbound.c, line 774.
(gdb) r
Starting program: /usr/pkg/sbin/unbound 
Breakpoint 1, main (argc=1, argv=0x7f7fffffe758) at ./daemon/unbound.c:774
774     {
(gdb) i li *0x7f7ff78d1333
Line 3159 of "./util/netevent.c"
   starts at address 0x7f7ff78d1327 <comm_point_tcp_accept_callback+173>
   and ends at 0x7f7ff78d133f <comm_point_tcp_accept_callback+197>.
(gdb) list util/netevent.c:3159
3154    /** Create http2 session server.  Per connection, after TCP accepted.*/
3155    static int http2_session_server_create(struct http2_session* h2_session)
3156    {
3157            log_assert(h2_session->callbacks);
3158            h2_session->is_drop = 0;
3159            if(nghttp2_session_server_new(&h2_session->session,
3160                            h2_session->callbacks,
3161                    h2_session) == NGHTTP2_ERR_NOMEM) {
3162                    log_err("failed to create nghttp2 session server");
3163                    return 0;
(gdb) i li *0x7f7ff78d1376
Line 3177 of "./util/netevent.c"
   starts at address 0x7f7ff78d1367 <comm_point_tcp_accept_callback+237>
   and ends at 0x7f7ff78d1377 <comm_point_tcp_accept_callback+253>.
(gdb) l 3177
3172            int ret;
3173            nghttp2_settings_entry settings[1] = {
3174                    {NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS,
3175                     h2_session->c->http2_max_streams}};
3176    
3177            ret = nghttp2_submit_settings(h2_session->session, NGHTTP2_FLAG_NONE,
3178                    settings, 1);
3179            if(ret) {
3180                    verbose(VERB_QUERY, "http2: submit_settings failed, "
3181                            "error: %s", nghttp2_strerror(ret));
(gdb)