ThreadSanitizer: data race bin/tests/system/rpz/testlib/test-data.c:401 in add_other_rr

Job #3279668 failed for cc8b9c1f.

system:gcc:tsan reported ThreadSanitizer data race in a test code (bin/tests/system/rpz/testlib/test-data.c).

This should be either fixed or the file suppressed in tsan-suppressions.txt.

WARNING: ThreadSanitizer: data race 
  Read of size 4 at 0x000000000001 by thread T1:
    #0 add_other_rr bin/tests/system/rpz/testlib/test-data.c:401
    #1 apply_update bin/tests/system/rpz/testlib/test-data.c:1036
    #2 load_all_updates bin/tests/system/rpz/testlib/test-data.c:1351
    #3 apply_all_updates bin/tests/system/rpz/testlib/dummylib.c:739
    #4 trpz_rsp_create bin/tests/system/rpz/testlib/dummylib.c:855
    #5 dns_dnsrps_rewrite_init lib/dns/dnsrps.c:266
    #6 rpz_rewrite lib/ns/query.c:4212
    #7 query_checkrpz lib/ns/query.c:7200
    #8 query_gotanswer lib/ns/query.c:7630
    #9 query_lookup lib/ns/query.c:6137
    #10 ns__query_start lib/ns/query.c:5822
    #11 query_setup lib/ns/query.c:5536
    #12 ns_query_start lib/ns/query.c:12102
    #13 ns_client_request lib/ns/client.c:2234
    #14 isc__nm_readcb_job netmgr/netmgr.c:1883
    #15 isc__nm_readcb netmgr/netmgr.c:1897
    #16 isc__nm_udp_read_cb netmgr/udp.c:592
    #17 uv__udp_recvmmsg /usr/src/libuv-v1.44.1/src/unix/udp.c:231
    #18 isc__trampoline_run lib/isc/trampoline.c:202

  Previous write of size 4 at 0x000000000001 by thread T2:
    #0 add_other_rr bin/tests/system/rpz/testlib/test-data.c:401
    #1 apply_update bin/tests/system/rpz/testlib/test-data.c:1036
    #2 load_all_updates bin/tests/system/rpz/testlib/test-data.c:1351
    #3 apply_all_updates bin/tests/system/rpz/testlib/dummylib.c:739
    #4 trpz_rsp_create bin/tests/system/rpz/testlib/dummylib.c:855
    #5 dns_dnsrps_rewrite_init lib/dns/dnsrps.c:266
    #6 rpz_rewrite lib/ns/query.c:4212
    #7 query_checkrpz lib/ns/query.c:7200
    #8 query_gotanswer lib/ns/query.c:7630
    #9 query_lookup lib/ns/query.c:6137
    #10 ns__query_start lib/ns/query.c:5822
    #11 query_setup lib/ns/query.c:5536
    #12 ns_query_start lib/ns/query.c:12102
    #13 ns_client_request lib/ns/client.c:2234
    #14 isc__nm_readcb_job netmgr/netmgr.c:1883
    #15 isc__nm_readcb netmgr/netmgr.c:1897
    #16 isc__nm_udp_read_cb netmgr/udp.c:592
    #17 uv__udp_recvmmsg /usr/src/libuv-v1.44.1/src/unix/udp.c:231
    #18 isc__trampoline_run lib/isc/trampoline.c:202

  Location is global 'rrn.1' of size 4 at 0x000000000001

  Thread T2 'isc-loop-0008' (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/thread.c:70
    #2 isc_loopmgr_run lib/isc/loop.c:478
    #3 main bin/named/main.c:1514

  Thread T2 'isc-loop-0001' (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/thread.c:70
    #2 isc_loopmgr_run lib/isc/loop.c:478
    #3 main bin/named/main.c:1514

SUMMARY: ThreadSanitizer: data race bin/tests/system/rpz/testlib/test-data.c:401 in add_other_rr