Segmentation fault in the dupsigs system test
From https://gitlab.isc.org/isc-projects/bind9/-/jobs/3040116:
D:dupsigs:Core was generated by `/builds/isc-projects/bind9/bin/named/.libs/named -D dupsigs-ns1 -X named.lock -'.
D:dupsigs:Program terminated with signal SIGABRT, Aborted.
D:dupsigs:#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f8ba4c0a4c0) at ../sysdeps/nptl/futex-internal.h:186
D:dupsigs:[Current thread is 1 (Thread 0x7f8bc717e140 (LWP 1506))]
D:dupsigs:#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7f8ba4c0a4c0) at ../sysdeps/nptl/futex-internal.h:186
D:dupsigs:#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f8ba4c0a450, cond=0x7f8ba4c0a498) at pthread_cond_wait.c:508
D:dupsigs:#2 __pthread_cond_wait (cond=0x7f8ba4c0a498, mutex=0x7f8ba4c0a450) at pthread_cond_wait.c:638
D:dupsigs:#3 0x00007f8bca7d073b in rwlock_lock (rwl=0x7f8ba4c0a448, type=isc_rwlocktype_read) at rwlock.c:222
D:dupsigs:#4 0x00007f8bca7d116a in isc__rwlock_lock (rwl=0x7f8ba4c0a448, type=isc_rwlocktype_read) at rwlock.c:331
D:dupsigs:#5 0x00007f8bca40560a in findnodeintree (rbtdb=0x7f8ba4c0a300, tree=0x7f8ba4c1f190, name=0x7fffe325a5f0, create=false, nodep=0x7fffe325a8a8) at rbtdb.c:2861
D:dupsigs:#6 0x00007f8bca405a81 in findnode (db=0x7f8ba4c0a300, name=0x7fffe325a5f0, create=false, nodep=0x7fffe325a8a8) at rbtdb.c:2925
D:dupsigs:#7 0x00007f8bca348f65 in dns_db_findnode (db=0x7f8ba4c0a300, name=0x7fffe325a5f0, create=false, nodep=0x7fffe325a8a8) at db.c:434
D:dupsigs:#8 0x00007f8bca382b5a in dns_db_createsoatuple (db=0x7f8ba4c0a300, ver=0x7f8ba4c26180, mctx=0x7f8bc671c800, op=DNS_DIFFOP_EXISTS, tp=0x7fffe325b648) at journal.c:141
D:dupsigs:#9 0x00007f8bca268309 in ns_xfr_start (client=0x7f8bc619d400, reqtype=252) at xfrout.c:968
D:dupsigs:#10 0x00007f8bca255186 in ns_query_start (client=0x7f8bc619d400, handle=0x7f8bc6c9bfc0) at query.c:11979
D:dupsigs:#11 0x00007f8bca220e82 in ns__client_request (handle=0x7f8bc6c9bfc0, eresult=ISC_R_SUCCESS, region=0x7fffe325c320, arg=0x7f8bc6c94380) at client.c:2239
D:dupsigs:#12 0x00007f8bca76e703 in streamdns_on_complete_dnsmessage (dnsasm=0x7f8bc6c3e300, region=0x7fffe325c320, sock=0x7f8bc6deec00, transphandle=0x7f8bc6c9bc40) at netmgr/streamdns.c:144
D:dupsigs:#13 0x00007f8bca76e8c8 in streamdns_on_dnsmessage_data_cb (dnsasm=0x7f8bc6c3e300, result=ISC_R_SUCCESS, region=0x7fffe325c320, cbarg=0x7f8bc6deec00, userarg=0x7f8bc6c9bc40) at netmgr/streamdns.c:203
D:dupsigs:#14 0x00007f8bca76e1a3 in isc__dnsstream_assembler_handle_message (dnsasm=0x7f8bc6c3e300, userarg=0x7f8bc6c9bc40) at ./include/isc/dnsstream.h:338
D:dupsigs:#15 0x00007f8bca76e38b in isc_dnsstream_assembler_incoming (dnsasm=0x7f8bc6c3e300, userarg=0x7f8bc6c9bc40, buf=0x7f8bc6580800, buf_size=55) at ./include/isc/dnsstream.h:367
D:dupsigs:#16 0x00007f8bca76e9b3 in streamdns_handle_incoming_data (sock=0x7f8bc6deec00, transphandle=0x7f8bc6c9bc40, data=0x7f8bc6580800, len=55) at netmgr/streamdns.c:239
D:dupsigs:#17 0x00007f8bca76ff05 in streamdns_readcb (handle=0x7f8bc6c9bc40, result=ISC_R_SUCCESS, region=0x7fffe325c440, cbarg=0x7f8bc6deec00) at netmgr/streamdns.c:522
D:dupsigs:#18 0x00007f8bca769eb4 in isc__nm_async_readcb (worker=0x0, ev0=0x7fffe325c4c0) at netmgr/netmgr.c:2077
D:dupsigs:#19 0x00007f8bca769c95 in isc__nm_readcb (sock=0x7f8bc6dee200, uvreq=0x7f8bc67cf000, eresult=ISC_R_SUCCESS, async=false) at netmgr/netmgr.c:2050
D:dupsigs:#20 0x00007f8bca7763cc in isc__nm_tcp_read_cb (stream=0x7f8bc6dee7e0, nread=55, buf=0x7fffe325c730) at netmgr/tcp.c:823
D:dupsigs:#21 0x00007f8bc9e0b5e9 in uv__read (stream=0x7f8bc6dee7e0) at /usr/src/libuv-v1.44.1/src/unix/stream.c:1247
D:dupsigs:#22 0x00007f8bc9e0b8a8 in uv__stream_io (loop=0x7f8bc6ca2da0, w=0x7f8bc6dee868, events=1) at /usr/src/libuv-v1.44.1/src/unix/stream.c:1315
D:dupsigs:#23 0x00007f8bc9e15bc3 in uv__io_poll (loop=0x7f8bc6ca2da0, timeout=30000) at /usr/src/libuv-v1.44.1/src/unix/epoll.c:374
D:dupsigs:#24 0x00007f8bc9dfa8ae in uv_run (loop=0x7f8bc6ca2da0, mode=UV_RUN_DEFAULT) at /usr/src/libuv-v1.44.1/src/unix/core.c:391
D:dupsigs:#25 0x00007f8bca7a3308 in loop_run (loop=0x7f8bc6ca2d80) at loop.c:270
D:dupsigs:#26 0x00007f8bca7a3555 in loop_thread (arg=0x7f8bc6ca2d80) at loop.c:297
D:dupsigs:#27 0x00007f8bca7a4956 in isc_loopmgr_run (loopmgr=0x7f8bc6c233c0) at loop.c:481
D:dupsigs:#28 0x000055d925bbfe4f in main (argc=18, argv=0x7fffe325fb18) at main.c:1518