ThreadSanitizer: data race rbtdb.c in update_header

• Binary: named
• Commit: c5b6f215
• Tests: autosign

WARNING: ThreadSanitizer: data race (pid=45980)
  Write of size 8 at 0x7b4c00003160 by thread T7 (mutexes: write M290055290576030928):
    #0 update_header rbtdb.c (libdns.1503.dylib:x86_64+0xc9fe5)
    #1 find_deepest_zonecut rbtdb.c:4558 (libdns.1503.dylib:x86_64+0xc9886)
    #2 cache_find rbtdb.c:4738 (libdns.1503.dylib:x86_64+0xb5f48)
    #3 dns_db_find db.c:511 (libdns.1503.dylib:x86_64+0x2b4df)
    #4 dns_view_find view.c:1019 (libdns.1503.dylib:x86_64+0x18cb59)
    #5 dbfind_name adb.c:3658 (libdns.1503.dylib:x86_64+0xd8e3)
    #6 dns_adb_createfind adb.c:3083 (libdns.1503.dylib:x86_64+0xc163)
    #7 findname resolver.c:3371 (libdns.1503.dylib:x86_64+0x13ae8b)
    #8 fctx_try resolver.c:3660 (libdns.1503.dylib:x86_64+0x136402)
    #9 fctx_start resolver.c:4647 (libdns.1503.dylib:x86_64+0x12f383)
    #10 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Previous write of size 8 at 0x7b4c00003160 by thread T5:
    #0 update_header rbtdb.c (libdns.1503.dylib:x86_64+0xc9fe5)
    #1 cache_findzonecut rbtdb.c:5146 (libdns.1503.dylib:x86_64+0xb6cb7)
    #2 dns_db_findzonecut db.c:577 (libdns.1503.dylib:x86_64+0x2b900)
    #3 dns_view_findzonecut view.c:1309 (libdns.1503.dylib:x86_64+0x18d4be)
    #4 rctx_done resolver.c:9348 (libdns.1503.dylib:x86_64+0x1443e8)
    #5 resquery_response resolver.c (libdns.1503.dylib:x86_64+0x13ece7)
    #6 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Location is heap block of size 447 at 0x7b4c00003100 allocated by thread T5:
    #0 malloc <null>:7941664 (libclang_rt.tsan_osx_dynamic.dylib:x86_64h+0x4e65a)
    #1 default_memalloc mem.c:685 (libisc.1503.dylib:x86_64+0x17ae1)
    #2 addrdataset rbtdb.c:6450 (libdns.1503.dylib:x86_64+0xb88d4)
    #3 dns_db_addrdataset db.c:744 (libdns.1503.dylib:x86_64+0x2c2ee)
    #4 resquery_response resolver.c:6226 (libdns.1503.dylib:x86_64+0x1426c0)
    #5 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Mutex M290055290576030928 is already destroyed.

  Thread T7 (tid=4654360, running) created by main thread at:
    #0 pthread_create <null>:7941712 (libclang_rt.tsan_osx_dynamic.dylib:x86_64h+0x2a9cd)
    #1 isc_thread_create thread.c:75 (libisc.1503.dylib:x86_64+0x46d1c)
    #2 main main.c:902 (named:x86_64+0x10000ad16)

  Thread T5 (tid=4654358, running) created by main thread at:
    #0 pthread_create <null>:7941712 (libclang_rt.tsan_osx_dynamic.dylib:x86_64h+0x2a9cd)
    #1 isc_thread_create thread.c:75 (libisc.1503.dylib:x86_64+0x46d1c)
    #2 main main.c:902 (named:x86_64+0x10000ad16)

SUMMARY: ThreadSanitizer: data race rbtdb.c in update_header