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Issue created by Ondřej Surý@ondrejOwner

ThreadSanitizer: data race rbtdb.c:925 in set_index

  • Binary: named
  • Commit: c5b6f215
  • Tests: autosign
WARNING: ThreadSanitizer: data race (pid=45980)
  Write of size 4 at 0x7b5800031e70 by thread T6:
    #0 set_index rbtdb.c:925 (libdns.1503.dylib:x86_64+0xb190e)
    #1 isc_heap_delete heap.c:219 (libisc.1503.dylib:x86_64+0x948f)
    #2 decrement_reference rbtdb.c:1572 (libdns.1503.dylib:x86_64+0xc31dc)
    #3 detachnode rbtdb.c:5197 (libdns.1503.dylib:x86_64+0xb7024)
    #4 rdataset_disassociate rbtdb.c:8377 (libdns.1503.dylib:x86_64+0xc0330)
    #5 dns_rdataset_disassociate rdataset.c:118 (libdns.1503.dylib:x86_64+0x120089)
    #6 fctx_destroy resolver.c:4395 (libdns.1503.dylib:x86_64+0x130251)
    #7 fctx_doshutdown resolver.c:4570 (libdns.1503.dylib:x86_64+0x14c626)
    #8 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Previous read of size 4 at 0x7b5800031e70 by thread T7 (mutexes: write M1037934011638359720):
    #0 expire_header rbtdb.c:883 (libdns.1503.dylib:x86_64+0xc2857)
    #1 addrdataset rbtdb.c:6568 (libdns.1503.dylib:x86_64+0xb9976)
    #2 dns_db_addrdataset db.c:744 (libdns.1503.dylib:x86_64+0x2c2ee)
    #3 validated resolver.c:5627 (libdns.1503.dylib:x86_64+0x14b277)
    #4 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Location is heap block of size 723 at 0x7b5800031e00 allocated by thread T6:
    #0 malloc <null>:6890784 (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 validated resolver.c:5638 (libdns.1503.dylib:x86_64+0x14b31e)
    #5 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Mutex M1037934011638359720 is already destroyed.

  Thread T6 (tid=4654359, running) created by main thread at:
    #0 pthread_create <null>:6890832 (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 T7 (tid=4654360, running) created by main thread at:
    #0 pthread_create <null>:6890832 (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:925 in set_index

a slightly different variant, but same location:

WARNING: ThreadSanitizer: data race (pid=45980)
  Write of size 4 at 0x7b2c00015990 by thread T6:
    #0 set_index rbtdb.c:925 (libdns.1503.dylib:x86_64+0xb190e)
    #1 sink_down heap.c:185 (libisc.1503.dylib:x86_64+0x960d)
    #2 decrement_reference rbtdb.c:1572 (libdns.1503.dylib:x86_64+0xc31dc)
    #3 detachnode rbtdb.c:5197 (libdns.1503.dylib:x86_64+0xb7024)
    #4 rdataset_disassociate rbtdb.c:8377 (libdns.1503.dylib:x86_64+0xc0330)
    #5 dns_rdataset_disassociate rdataset.c:118 (libdns.1503.dylib:x86_64+0x120089)
    #6 fctx_destroy resolver.c:4395 (libdns.1503.dylib:x86_64+0x130251)
    #7 fctx_doshutdown resolver.c:4570 (libdns.1503.dylib:x86_64+0x14c626)
    #8 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Previous write of size 4 at 0x7b2c00015990 by thread T7 (mutexes: write M1037934011638359720):
    #0 set_index rbtdb.c:925 (libdns.1503.dylib:x86_64+0xb190e)
    #1 float_up heap.c:159 (libisc.1503.dylib:x86_64+0x93f0)
    #2 addrdataset rbtdb.c:6599 (libdns.1503.dylib:x86_64+0xb9abc)
    #3 dns_db_addrdataset db.c:744 (libdns.1503.dylib:x86_64+0x2c2ee)
    #4 validated resolver.c:5627 (libdns.1503.dylib:x86_64+0x14b277)
    #5 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Location is heap block of size 167 at 0x7b2c00015920 allocated by thread T7:
    #0 malloc <null>:6890768 (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 validated resolver.c:5627 (libdns.1503.dylib:x86_64+0x14b277)
    #5 run task.c:1134 (libisc.1503.dylib:x86_64+0x2c9e1)

  Mutex M1037934011638359720 is already destroyed.

  Thread T6 (tid=4654359, running) created by main thread at:
    #0 pthread_create <null>:6890816 (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 T7 (tid=4654360, running) created by main thread at:
    #0 pthread_create <null>:6890816 (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:925 in set_index
Edited by Ondřej Surý