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Author SHA1 Message Date
Ondřej Surý
8b1e4a5373 Exclude isc_mem_isovermem from ThreadSanitizer 
The .is_overmem member of isc_mem_t structure is intentionally accessed
unlocked as 100% accuracy isn't necessary here.

Without the attribute, following TSAN warning would show up:

    WARNING: ThreadSanitizer: data race
      Write of size 1 at 0x000000000001 by thread T1 (mutexes: write M1, write M2):
	#0 isc___mem_put lib/isc/mem.c:1119:19
	#1 isc__mem_put lib/isc/mem.c:2439:2
	#2 dns_rdataslab_fromrdataset lib/dns/rdataslab.c:327:2
	#3 addrdataset lib/dns/rbtdb.c:6761:11
	#4 dns_db_addrdataset lib/dns/db.c:719:10
	#5 cache_name lib/dns/resolver.c:6538:13
	#6 cache_message lib/dns/resolver.c:6628:14
	#7 resquery_response lib/dns/resolver.c:7883:13
	#8 dispatch lib/isc/task.c:1152:7
	#9 run lib/isc/task.c:1344:2

      Previous read of size 1 at 0x000000000001 by thread T2 (mutexes: write M3):
	#0 isc_mem_isovermem lib/isc/mem.c:1553:15
	#1 addrdataset lib/dns/rbtdb.c:6866:25
	#2 dns_db_addrdataset lib/dns/db.c:719:10
	#3 addoptout lib/dns/ncache.c:281:10
	#4 dns_ncache_add lib/dns/ncache.c:101:10
	#5 ncache_adderesult lib/dns/resolver.c:6668:12
	#6 ncache_message lib/dns/resolver.c:6845:11
	#7 rctx_ncache lib/dns/resolver.c:9174:11
	#8 resquery_response lib/dns/resolver.c:7894:2
	#9 dispatch lib/isc/task.c:1152:7
	#10 run lib/isc/task.c:1344:2

      Location is heap block of size 328 at 0x000000000020 allocated by thread T3:
	#0 malloc <null>
	#1 default_memalloc lib/isc/mem.c:713:8
	#2 mem_create lib/isc/mem.c:763:8
	#3 isc_mem_create lib/isc/mem.c:2425:2
	#4 configure_view bin/named/server.c:4494:4
	#5 load_configuration bin/named/server.c:9062:3
	#6 run_server bin/named/server.c:9771:2
	#7 dispatch lib/isc/task.c:1152:7
	#8 run lib/isc/task.c:1344:2

    [...]

    SUMMARY: ThreadSanitizer: data race lib/isc/mem.c:1119:19 in isc___mem_put

(cherry picked from commit 0110d1ab17)
 2020-09-17 17:35:58 +02:00
Mark Andrews
8fd71091bf Merge branch '2131-tsan-data-race-in-accessing-controls-symtab-v9_16' into 'v9_16' 
Lock access to control->symtab to prevent data race

See merge request isc-projects/bind9!4138
 2020-09-17 09:59:48 +00:00
Mark Andrews
76682f7882 Lock access to control->symtab to prevent data race 
WARNING: ThreadSanitizer: data race
    Read of size 8 at 0x000000000001 by thread T1:
    #0 isccc_symtab_foreach lib/isccc/symtab.c:277:14
    #1 isccc_cc_cleansymtab lib/isccc/cc.c:954:2
    #2 control_recvmessage bin/named/controlconf.c:477:2
    #3 recv_data lib/isccc/ccmsg.c:110:2
    #4 read_cb lib/isc/netmgr/tcp.c:769:4
    #5 <null> <null>

    Previous write of size 8 at 0x000000000001 by thread T2:
    #0 isccc_symtab_define lib/isccc/symtab.c:242:2
    #1 isccc_cc_checkdup lib/isccc/cc.c:1026:11
    #2 control_recvmessage bin/named/controlconf.c:478:11
    #3 recv_data lib/isccc/ccmsg.c:110:2
    #4 read_cb lib/isc/netmgr/tcp.c:769:4
    #5 <null> <null>

    Location is heap block of size 190352 at 0x000000000011 allocated by main thread:
    #0 malloc <null>
    #1 isccc_symtab_create lib/isccc/symtab.c:76:18
    #2 isccc_cc_createsymtab lib/isccc/cc.c:948:10
    #3 named_controls_create bin/named/controlconf.c:1483:11
    #4 named_server_create bin/named/server.c:10057:2
    #5 setup bin/named/main.c:1256:2
    #6 main bin/named/main.c:1523:2

    Thread T1 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_nm_start lib/isc/netmgr/netmgr.c:215:3
    #3 create_managers bin/named/main.c:909:15
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    Thread T2 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_nm_start lib/isc/netmgr/netmgr.c:215:3
    #3 create_managers bin/named/main.c:909:15
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    SUMMARY: ThreadSanitizer: data race lib/isccc/symtab.c:277:14 in isccc_symtab_foreach

(cherry picked from commit 0450acc1b6)
 2020-09-17 19:31:41 +10:00
Mark Andrews
c8a675bae0 Merge branch '2123-lock-order-inversions-in-main-v9_16' into 'v9_16' 
Resolve "Lock order inversions in main"

See merge request isc-projects/bind9!4136
 2020-09-17 08:42:44 +00:00
Mark Andrews
b7b0a4d71f Pause dbiterator ealier to prevent lock-order-inversion 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
    Cycle in lock order graph: M1 (0x000000000000) => M2 (0x000000000000) => M1

    Mutex M2 acquired here while holding mutex M1 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 findnodeintree lib/dns/rbtdb.c:2877:2
    #3 findnode lib/dns/rbtdb.c:2941:10
    #4 dns_db_findnode lib/dns/db.c:439:11
    #5 resume_addnsec3chain lib/dns/zone.c:3776:11
    #6 rss_post lib/dns/zone.c:20659:3
    #7 setnsec3param lib/dns/zone.c:20471:3
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Mutex M1 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null>
    #1 rss_post lib/dns/zone.c:20658:3
    #2 setnsec3param lib/dns/zone.c:20471:3
    #3 dispatch lib/isc/task.c:1152:7
    #4 run lib/isc/task.c:1344:2

    Mutex M1 acquired here while holding mutex M2 in thread T2:
    #0 pthread_mutex_lock <null>
    #1 zone_nsec3chain lib/dns/zone.c:8666:5
    #2 zone_maintenance lib/dns/zone.c:11063:4
    #3 zone_timer lib/dns/zone.c:14098:2
    #4 dispatch lib/isc/task.c:1152:7
    #5 run lib/isc/task.c:1344:2

    Mutex M2 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_next lib/dns/rbtdb.c:9647:3
    #4 dns_dbiterator_next lib/dns/dbiterator.c:87:10
    #5 zone_nsec3chain lib/dns/zone.c:8656:13
    #6 zone_maintenance lib/dns/zone.c:11063:4
    #7 zone_timer lib/dns/zone.c:14098:2
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

(cherry picked from commit 9e584a4511)
 2020-09-17 18:24:07 +10:00
Mark Andrews
6edd349af5 Pause the database iterator to release rwlock 
(cherry picked from commit 2e63de94aa)
 2020-09-17 18:24:07 +10:00
Mark Andrews
5cdc4671ec Pause dbiterator to release rwlock to prevent lock-order-inversion. 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
    Cycle in lock order graph: M1 (0x000000000000) => M2 (0x000000000001) => M1

    Mutex M2 acquired here while holding mutex M1 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 getsigningtime lib/dns/rbtdb.c:8198:2
    #3 dns_db_getsigningtime lib/dns/db.c:979:11
    #4 set_resigntime lib/dns/zone.c:3887:11
    #5 dns_zone_markdirty lib/dns/zone.c:11119:4
    #6 update_action lib/ns/update.c:3376:3
    #7 dispatch lib/isc/task.c:1152:7
    #8 run lib/isc/task.c:1344:2

    Mutex M1 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null>
    #1 dns_zone_markdirty lib/dns/zone.c:11089:2
    #2 update_action lib/ns/update.c:3376:3
    #3 dispatch lib/isc/task.c:1152:7
    #4 run lib/isc/task.c:1344:2

    Mutex M1 acquired here while holding mutex M2 in thread T1:
    #0 pthread_mutex_lock <null>
    #1 zone_nsec3chain lib/dns/zone.c:8502:3
    #2 zone_maintenance lib/dns/zone.c:11056:4
    #3 zone_timer lib/dns/zone.c:14091:2
    #4 dispatch lib/isc/task.c:1152:7
    #5 run lib/isc/task.c:1344:2

    Mutex M2 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_current lib/dns/rbtdb.c:9695:3
    #4 dns_dbiterator_current lib/dns/dbiterator.c:101:10
    #5 zone_nsec3chain lib/dns/zone.c:8539:3
    #6 zone_maintenance lib/dns/zone.c:11056:4
    #7 zone_timer lib/dns/zone.c:14091:2
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Thread T1 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) in pthread_rwlock_rdlock

(cherry picked from commit fbed962204)
 2020-09-17 18:24:07 +10:00
Mark Andrews
02f09ac566 Pause dbiterator to release rwlock to prevent lock-order-inversion. 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
    Cycle in lock order graph: M1 (0x000000000001) => M2 (0x000000000000) => M1

    Mutex M2 acquired here while holding mutex M1 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 zone_sign lib/dns/zone.c:9247:3
    #3 zone_maintenance lib/dns/zone.c:11047:4
    #4 zone_timer lib/dns/zone.c:14090:2
    #5 dispatch lib/isc/task.c:1152:7
    #6 run lib/isc/task.c:1344:2

    Mutex M1 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_next lib/dns/rbtdb.c:9647:3
    #4 dns_dbiterator_next lib/dns/dbiterator.c:87:10
    #5 zone_sign lib/dns/zone.c:9488:13
    #6 zone_maintenance lib/dns/zone.c:11047:4
    #7 zone_timer lib/dns/zone.c:14090:2
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Mutex M1 acquired here while holding mutex M2 in thread T2:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 findnodeintree lib/dns/rbtdb.c:2877:2
    #3 findnode lib/dns/rbtdb.c:2941:10
    #4 dns_db_findnode lib/dns/db.c:439:11
    #5 dns_db_getsoaserial lib/dns/db.c:780:11
    #6 dump_done lib/dns/zone.c:11428:15
    #7 dump_quantum lib/dns/masterdump.c:1487:2
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Mutex M2 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 dump_done lib/dns/zone.c:11426:4
    #3 dump_quantum lib/dns/masterdump.c:1487:2
    #4 dispatch lib/isc/task.c:1152:7
    #5 run lib/isc/task.c:1344:2

    Thread T1 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    Thread T2 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) in pthread_rwlock_rdlock

(cherry picked from commit c9dbad97b2)
 2020-09-17 18:24:07 +10:00
Mark Andrews
d36b4ed8ed Pause dbiterator to release rwlock to prevent lock-order-inversion. 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
    Cycle in lock order graph: M1 (0x000000000000) => M2 (0x000000000000) => M1

    Mutex M2 acquired here while holding mutex M1 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 getsigningtime lib/dns/rbtdb.c:8198:2
    #3 dns_db_getsigningtime lib/dns/db.c:979:11
    #4 set_resigntime lib/dns/zone.c:3887:11
    #5 dns_zone_markdirty lib/dns/zone.c:11115:4
    #6 update_action lib/ns/update.c:3376:3
    #7 dispatch lib/isc/task.c:1152:7
    #8 run lib/isc/task.c:1344:2

    Mutex M1 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null>
    #1 dns_zone_markdirty lib/dns/zone.c:11085:2
    #2 update_action lib/ns/update.c:3376:3
    #3 dispatch lib/isc/task.c:1152:7
    #4 run lib/isc/task.c:1344:2

    Mutex M1 acquired here while holding mutex M2 in thread T2:
    #0 pthread_mutex_lock <null>
    #1 zone_nsec3chain lib/dns/zone.c:8274:3
    #2 zone_maintenance lib/dns/zone.c:11052:4
    #3 zone_timer lib/dns/zone.c:14087:2
    #4 dispatch lib/isc/task.c:1152:7
    #5 run lib/isc/task.c:1344:2

    Mutex M2 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_next lib/dns/rbtdb.c:9647:3
    #4 dns_dbiterator_next lib/dns/dbiterator.c:87:10
    #5 zone_nsec3chain lib/dns/zone.c:8412:13
    #6 zone_maintenance lib/dns/zone.c:11052:4
    #7 zone_timer lib/dns/zone.c:14087:2
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Thread T1 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    Thread T2 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) in pthread_rwlock_rdlock

(cherry picked from commit 98025e15d0)
 2020-09-17 18:24:07 +10:00
Mark Andrews
6a1cd20473 Pause dbiterator to release rwlock to prevent lock-order-inversion. 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
    Cycle in lock order graph: M1 (0x000000000001) => M2 (0x000000000002) => M3 (0x000000000000) => M1

    Mutex M2 acquired here while holding mutex M1 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 findnodeintree lib/dns/rbtdb.c:2877:2
    #3 findnode lib/dns/rbtdb.c:2941:10
    #4 dns_db_findnode lib/dns/db.c:439:11
    #5 copy_non_dnssec_records lib/dns/zone.c:16031:11
    #6 receive_secure_db lib/dns/zone.c:16163:12
    #7 dispatch lib/isc/task.c:1152:7
    #8 run lib/isc/task.c:1344:2

    Mutex M1 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_first lib/dns/rbtdb.c:9407:3
    #4 dns_dbiterator_first lib/dns/dbiterator.c:43:10
    #5 receive_secure_db lib/dns/zone.c:16160:16
    #6 dispatch lib/isc/task.c:1152:7
    #7 run lib/isc/task.c:1344:2

    Mutex M3 acquired here while holding mutex M2 in thread T2:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 zone_sign lib/dns/zone.c:9244:3
    #3 zone_maintenance lib/dns/zone.c:11044:4
    #4 zone_timer lib/dns/zone.c:14087:2
    #5 dispatch lib/isc/task.c:1152:7
    #6 run lib/isc/task.c:1344:2

    Mutex M2 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_next lib/dns/rbtdb.c:9647:3
    #4 dns_dbiterator_next lib/dns/dbiterator.c:87:10
    #5 zone_sign lib/dns/zone.c:9485:13
    #6 zone_maintenance lib/dns/zone.c:11044:4
    #7 zone_timer lib/dns/zone.c:14087:2
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Mutex M1 acquired here while holding mutex M3 in thread T3:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 findnodeintree lib/dns/rbtdb.c:2877:2
    #3 findnode lib/dns/rbtdb.c:2941:10
    #4 dns_db_findnode lib/dns/db.c:439:11
    #5 zone_get_from_db lib/dns/zone.c:5602:11
    #6 get_raw_serial lib/dns/zone.c:2520:12
    #7 zone_gotwritehandle lib/dns/zone.c:2559:4
    #8 dispatch lib/isc/task.c:1152:7
    #9 run lib/isc/task.c:1344:2

    Mutex M3 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 zone_gotwritehandle lib/dns/zone.c:2552:2
    #3 dispatch lib/isc/task.c:1152:7
    #4 run lib/isc/task.c:1344:2

    Thread T1 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    Thread T2 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    Thread T3 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) in pthread_rwlock_rdlock

(cherry picked from commit e185e37137)
 2020-09-17 18:24:06 +10:00
Mark Andrews
f5a8d9055f Address lock-order-inversion between the keytable and the db locks. 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
    Cycle in lock order graph: M1 (0x000000000000) => M2 (0x000000000000) => M1

    Mutex M2 acquired here while holding mutex M1 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 dns_keytable_find lib/dns/keytable.c:522:2
    #3 sync_keyzone lib/dns/zone.c:4560:12
    #4 dns_zone_synckeyzone lib/dns/zone.c:4635:11
    #5 mkey_refresh bin/named/server.c:15423:2
    #6 named_server_mkeys bin/named/server.c:15727:4
    #7 named_control_docommand bin/named/control.c:236:12
    #8 control_command bin/named/controlconf.c:365:17
    #9 dispatch lib/isc/task.c:1152:7
    #10 run lib/isc/task.c:1344:2

    Mutex M1 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 resume_iteration lib/dns/rbtdb.c:9357:2
    #3 dbiterator_first lib/dns/rbtdb.c:9407:3
    #4 dns_dbiterator_first lib/dns/dbiterator.c:43:10
    #5 dns_rriterator_first lib/dns/rriterator.c:71:15
    #6 sync_keyzone lib/dns/zone.c:4543:16
    #7 dns_zone_synckeyzone lib/dns/zone.c:4635:11
    #8 mkey_refresh bin/named/server.c:15423:2
    #9 named_server_mkeys bin/named/server.c:15727:4
    #10 named_control_docommand bin/named/control.c:236:12
    #11 control_command bin/named/controlconf.c:365:17
    #12 dispatch lib/isc/task.c:1152:7
    #13 run lib/isc/task.c:1344:2

    Mutex M1 acquired here while holding mutex M2 in thread T1:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 zone_find lib/dns/rbtdb.c:4029:2
    #3 dns_db_find lib/dns/db.c:500:11
    #4 addifmissing lib/dns/zone.c:4481:11
    #5 dns_keytable_forall lib/dns/keytable.c:786:4
    #6 sync_keyzone lib/dns/zone.c:4586:2
    #7 dns_zone_synckeyzone lib/dns/zone.c:4635:11
    #8 mkey_refresh bin/named/server.c:15423:2
    #9 named_server_mkeys bin/named/server.c:15727:4
    #10 named_control_docommand bin/named/control.c:236:12
    #11 control_command bin/named/controlconf.c:365:17
    #12 dispatch lib/isc/task.c:1152:7
    #13 run lib/isc/task.c:1344:2

    Mutex M2 previously acquired by the same thread here:
    #0 pthread_rwlock_rdlock <null>
    #1 isc_rwlock_lock lib/isc/rwlock.c:48:3
    #2 dns_keytable_forall lib/dns/keytable.c:770:2
    #3 sync_keyzone lib/dns/zone.c:4586:2
    #4 dns_zone_synckeyzone lib/dns/zone.c:4635:11
    #5 mkey_refresh bin/named/server.c:15423:2
    #6 named_server_mkeys bin/named/server.c:15727:4
    #7 named_control_docommand bin/named/control.c:236:12
    #8 control_command bin/named/controlconf.c:365:17
    #9 dispatch lib/isc/task.c:1152:7
    #10 run lib/isc/task.c:1344:2

    Thread T1 (running) created by main thread at:
    #0 pthread_create <null>
    #1 isc_thread_create lib/isc/pthreads/thread.c:73:8
    #2 isc_taskmgr_create lib/isc/task.c:1434:3
    #3 create_managers bin/named/main.c:915:11
    #4 setup bin/named/main.c:1223:11
    #5 main bin/named/main.c:1523:2

    SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) in pthread_rwlock_rdlock

(cherry picked from commit 9e5f83c499)
 2020-09-17 18:24:06 +10:00
Michał Kępień
a3368090d7 Merge branch 'v9_16_7-release' into 'v9_16' 
Merge 9.16.7 release branch

See merge request isc-projects/bind9!4132
 2020-09-16 20:56:50 +00:00
Michał Kępień
b027f992a0 Set up release notes for BIND 9.16.8 2020-09-16 22:55:35 +02:00
Michał Kępień
38cf12ac7d Bump BIND_BASELINE_VERSION for ABI checks 2020-09-16 22:55:35 +02:00
Tinderbox User
4c7341f651 Merge branch 'prep-release' into v9_16_7-release 2020-09-16 22:50:39 +02:00
Michał Kępień
a58c8ba0d2 Merge branch 'michal/prepare-release-notes-for-bind-9.16.7' into 'v9_16_7-release' 
Prepare release notes for BIND 9.16.7

See merge request isc-private/bind9!209
 2020-09-16 22:50:38 +02:00
Tinderbox User
a4f73cfe8a prep 9.16.7 2020-09-16 22:50:38 +02:00
Michał Kępień
4cebadfc3f Prepare release notes for BIND 9.16.7 2020-09-16 22:50:38 +02:00
Michał Kępień
a7f94c9502 Add release note for OSS-Fuzz fixes 2020-09-16 22:50:38 +02:00
Michał Kępień
b3aa411651 Add release note for GL #2074 2020-09-16 22:50:38 +02:00
Michał Kępień
fafc412ec6 Tweak and reword release notes 2020-09-16 22:50:38 +02:00
Michał Kępień
8fc6a644ce Tweak and reword recent CHANGES entries 2020-09-16 22:50:38 +02:00
Michal Nowak
c1c29ab908 Miscellaneous formatting and wording tweaks 2020-09-16 22:50:38 +02:00
Mark Andrews
4a5ed9c396 Merge branch 'marka-tsan-unit-no-ignore-error-v9_16' into 'v9_16' 
tsan unit no ignore error v9_16

See merge request isc-projects/bind9!4127
 2020-09-16 03:50:13 +00:00
Mark Andrews
56a3b0b1b5 remove 'allow_failure: true' from unit tsan tests 2020-09-16 13:28:15 +10:00
Evan Hunt
b04ae18772 Merge branch 'each-copyright-header-v9_16' into 'v9_16' 
copyright header typos

See merge request isc-projects/bind9!4120
 2020-09-15 00:03:13 +00:00
Evan Hunt
df698d73f4 update all copyright headers to eliminate the typo 2020-09-14 16:50:58 -07:00
Evan Hunt
5627f0c512 fix a typo in copyright headers, and change "http" to "https" 
(cherry picked from commit 481a7aae44)
 2020-09-14 16:47:50 -07:00
Mark Andrews
73091f4746 Merge branch '2119-the-runtime-system-tests-interfered-with-each-other-v9_16' into 'v9_16' 
Resolve "The runtime system tests interfered with each other"

See merge request isc-projects/bind9!4110
 2020-09-10 10:42:12 +00:00
Mark Andrews
a7be4e219e Wait for test instance of named to exit before completing subtest. 
(cherry picked from commit dda5b7b0b8)
 2020-09-10 20:13:03 +10:00
Mark Andrews
9d1c7316a0 Don't use production address (127.0.0.1) in runtime system test. 
(cherry picked from commit 1f14705938)
 2020-09-10 20:00:53 +10:00
Mark Andrews
228c28301a Merge branch '2116-views-system-test-was-not-waiting-for-example-to-finish-loading-v9_16' into 'v9_16' 
Also wait for 'zone_dump: zone example/IN: enter'

See merge request isc-projects/bind9!4108
 2020-09-10 09:55:01 +00:00
Mark Andrews
88de1ea75a Also wait for 'zone_dump: zone example/IN: enter' 
use nextpartpeek as we don't want to reset the starting point

(cherry picked from commit 7b65bea6d2)
 2020-09-10 18:48:33 +10:00
Mark Andrews
0741c440f0 Merge branch '2114-cid-306652-null-pointer-dereferences-reverse_inull-v9_16' into 'v9_16' 
Silence REVERSE_INULL warning (CID 306652)

See merge request isc-projects/bind9!4106
 2020-09-09 22:12:16 +00:00
Mark Andrews
2c1b6b2168 Silence REVERSE_INULL warning (CID 306652) 
(cherry picked from commit 584dbffab1)
 2020-09-10 07:54:19 +10:00
Evan Hunt
66b067ef71 Merge branch 'each-fix-packet-v9_16' into 'v9_16' 
work around perl error

See merge request isc-projects/bind9!4105
 2020-09-09 19:30:25 +00:00
Evan Hunt
22f03344f7 work around perl error 
some versions of perl failed to run packet.pl because the 'last'
keyword can't be used outside of a loop block. this commit changes
the packet dumping code to a function so we can use 'return' instead.

(cherry picked from commit bf9aee1b88)
 2020-09-09 12:28:59 -07:00
Mark Andrews
2118f49ca1 Merge branch '2090-main-dig-tsan-error-v9_16' into 'v9_16' 
Resolve "v9_11 dig tsan error"

See merge request isc-projects/bind9!4103
 2020-09-09 06:45:37 +00:00
Mark Andrews
c359fa0933 Turn off TSAN for isc_log_wouldlog 
(cherry picked from commit 7b3c7f52c2)
 2020-09-09 16:22:39 +10:00
Mark Andrews
6bbe46a502 make all artifacts visible 
(cherry picked from commit 93dd7b1b93)
 2020-09-09 16:22:39 +10:00
Mark Andrews
947bc2594b Only test node->data if we care about whether data is present or not. 
WARNING: ThreadSanitizer: data race (pid=28788)
  Write of size 8 at 0x7b200002e060 by thread T1 (mutexes: write M2947):
    #0 add32 /builds/isc-projects/bind9/lib/dns/rbtdb.c:6638:18 (libdns.so.1110+0xe7843)
    #1 addrdataset /builds/isc-projects/bind9/lib/dns/rbtdb.c:6975:12 (libdns.so.1110+0xe4185)
    #2 dns_db_addrdataset /builds/isc-projects/bind9/lib/dns/db.c:783:10 (libdns.so.1110+0x650ee)
    #3 validated /builds/isc-projects/bind9/lib/dns/resolver.c:5140:11 (libdns.so.1110+0x1909f7)
    #4 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507f5)
    #5 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d749)

  Previous read of size 8 at 0x7b200002e060 by thread T5 (mutexes: write M521146194917735760):
    #0 dns_rbt_findnode /builds/isc-projects/bind9/lib/dns/rbt.c:1708:9 (libdns.so.1110+0xd910d)
    #1 cache_find /builds/isc-projects/bind9/lib/dns/rbtdb.c:5098:11 (libdns.so.1110+0xe188e)
    #2 dns_db_find /builds/isc-projects/bind9/lib/dns/db.c:554:11 (libdns.so.1110+0x642bb)
    #3 dns_view_find2 /builds/isc-projects/bind9/lib/dns/view.c:1068:11 (libdns.so.1110+0x1cc2c4)
    #4 dbfind_name /builds/isc-projects/bind9/lib/dns/adb.c:3714:11 (libdns.so.1110+0x46a4b)
    #5 dns_adb_createfind2 /builds/isc-projects/bind9/lib/dns/adb.c:3133:12 (libdns.so.1110+0x45278)
    #6 findname /builds/isc-projects/bind9/lib/dns/resolver.c:3166:11 (libdns.so.1110+0x1827f0)
    #7 fctx_getaddresses /builds/isc-projects/bind9/lib/dns/resolver.c:3462:3 (libdns.so.1110+0x18032d)
    #8 fctx_try /builds/isc-projects/bind9/lib/dns/resolver.c:3819:12 (libdns.so.1110+0x17e174)
    #9 fctx_start /builds/isc-projects/bind9/lib/dns/resolver.c:4219:4 (libdns.so.1110+0x1787a3)
    #10 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507f5)
    #11 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d749)

(cherry picked from commit 71ef3a8038)
 2020-09-09 16:22:39 +10:00
Mark Andrews
f6ba3ec731 Address lock-order-inversion 
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=12714)
  Cycle in lock order graph: M100252 (0x7b7c00010a08) => M1171 (0x7b7400000dc8) => M100252

  Mutex M1171 acquired here while holding mutex M100252 in thread T1:
    #0 pthread_mutex_lock <null> (delv+0x4483a6)
    #1 dns_resolver_createfetch3 /builds/isc-projects/bind9/lib/dns/resolver.c:9585:2 (libdns.so.1110+0x1769fd)
    #2 dns_resolver_createfetch /builds/isc-projects/bind9/lib/dns/resolver.c:9504:10 (libdns.so.1110+0x174e17)
    #3 create_fetch /builds/isc-projects/bind9/lib/dns/validator.c:1156:10 (libdns.so.1110+0x1c1e5f)
    #4 validatezonekey /builds/isc-projects/bind9/lib/dns/validator.c:2124:13 (libdns.so.1110+0x1c3b6d)
    #5 start_positive_validation /builds/isc-projects/bind9/lib/dns/validator.c:2301:10 (libdns.so.1110+0x1bfde9)
    #6 validator_start /builds/isc-projects/bind9/lib/dns/validator.c:3647:12 (libdns.so.1110+0x1bef62)
    #7 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #8 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Mutex M100252 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null> (delv+0x4483a6)
    #1 validator_start /builds/isc-projects/bind9/lib/dns/validator.c:3628:2 (libdns.so.1110+0x1bee31)
    #2 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #3 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Mutex M100252 acquired here while holding mutex M1171 in thread T1:
    #0 pthread_mutex_lock <null> (delv+0x4483a6)
    #1 dns_validator_destroy /builds/isc-projects/bind9/lib/dns/validator.c:3912:2 (libdns.so.1110+0x1bf788)
    #2 validated /builds/isc-projects/bind9/lib/dns/resolver.c:4916:2 (libdns.so.1110+0x18fdfd)
    #3 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #4 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Mutex M1171 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null> (delv+0x4483a6)
    #1 validated /builds/isc-projects/bind9/lib/dns/resolver.c:4907:2 (libdns.so.1110+0x18fc3d)
    #2 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #3 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Thread T1 'isc-worker0000' (tid=12729, running) created by main thread at:
    #0 pthread_create <null> (delv+0x42afdb)
    #1 isc_thread_create /builds/isc-projects/bind9/lib/isc/pthreads/thread.c:60:8 (libisc.so.1107+0x726d8)
    #2 isc__taskmgr_create /builds/isc-projects/bind9/lib/isc/task.c:1468:7 (libisc.so.1107+0x4d635)
    #3 isc_taskmgr_createinctx /builds/isc-projects/bind9/lib/isc/task.c:2091:11 (libisc.so.1107+0x4f4ac)
    #4 main /builds/isc-projects/bind9/bin/delv/delv.c:1639:2 (delv+0x4b7f96)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) (/builds/isc-projects/bind9/bin/delv/.libs/delv+0x4483a6) in pthread_mutex_lock
(cherry picked from commit 992a79a14b)
 2020-09-09 16:22:39 +10:00
Mark Andrews
5d469f2498 Address lock-order-inversion 
Obtain references to view->redirect and view->managed_keys then
release view->lock so dns_zone_setviewcommit and dns_zone_setviewrevert
can obtain the view->lock while holding zone->lock.

WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=9132)
  Cycle in lock order graph: M987831431424375936 (0x000000000000) => M1012319771577875480 (0x000000000000) => M987831431424375936

  Mutex M1012319771577875480 acquired here while holding mutex M987831431424375936 in thread T2:
    #0 pthread_mutex_lock <null> (named+0x4642a6)
    #1 dns_zone_setviewcommit /builds/isc-projects/bind9/lib/dns/zone.c:1571:2 (libdns.so.1110+0x1d74eb)
    #2 dns_view_setviewcommit /builds/isc-projects/bind9/lib/dns/view.c:2388:3 (libdns.so.1110+0x1cfe29)
    #3 load_configuration /builds/isc-projects/bind9/bin/named/./server.c:8188:3 (named+0x51eadd)
    #4 loadconfig /builds/isc-projects/bind9/bin/named/./server.c:9438:11 (named+0x510c66)
    #5 ns_server_reconfigcommand /builds/isc-projects/bind9/bin/named/./server.c:9773:2 (named+0x510b41)
    #6 ns_control_docommand /builds/isc-projects/bind9/bin/named/control.c:243:12 (named+0x4e451a)
    #7 control_recvmessage /builds/isc-projects/bind9/bin/named/controlconf.c:465:13 (named+0x4e9056)
    #8 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #9 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Mutex M987831431424375936 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null> (named+0x4642a6)
    #1 dns_view_setviewcommit /builds/isc-projects/bind9/lib/dns/view.c:2382:2 (libdns.so.1110+0x1cfde7)
    #2 load_configuration /builds/isc-projects/bind9/bin/named/./server.c:8188:3 (named+0x51eadd)
    #3 loadconfig /builds/isc-projects/bind9/bin/named/./server.c:9438:11 (named+0x510c66)
    #4 ns_server_reconfigcommand /builds/isc-projects/bind9/bin/named/./server.c:9773:2 (named+0x510b41)
    #5 ns_control_docommand /builds/isc-projects/bind9/bin/named/control.c:243:12 (named+0x4e451a)
    #6 control_recvmessage /builds/isc-projects/bind9/bin/named/controlconf.c:465:13 (named+0x4e9056)
    #7 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #8 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Mutex M987831431424375936 acquired here while holding mutex M1012319771577875480 in thread T7:
    #0 pthread_mutex_lock <null> (named+0x4642a6)
    #1 dns_view_findzonecut2 /builds/isc-projects/bind9/lib/dns/view.c:1300:2 (libdns.so.1110+0x1cc93a)
    #2 dns_view_findzonecut /builds/isc-projects/bind9/lib/dns/view.c:1261:9 (libdns.so.1110+0x1cc864)
    #3 fctx_create /builds/isc-projects/bind9/lib/dns/resolver.c:4459:13 (libdns.so.1110+0x1779d3)
    #4 dns_resolver_createfetch3 /builds/isc-projects/bind9/lib/dns/resolver.c:9628:12 (libdns.so.1110+0x176cb6)
    #5 dns_resolver_createfetch /builds/isc-projects/bind9/lib/dns/resolver.c:9504:10 (libdns.so.1110+0x174e17)
    #6 zone_refreshkeys /builds/isc-projects/bind9/lib/dns/zone.c:10061:12 (libdns.so.1110+0x2055a5)
    #7 zone_maintenance /builds/isc-projects/bind9/lib/dns/zone.c:10274:5 (libdns.so.1110+0x203a78)
    #8 zone_timer /builds/isc-projects/bind9/lib/dns/zone.c:13106:2 (libdns.so.1110+0x1e815a)
    #9 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #10 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Mutex M1012319771577875480 previously acquired by the same thread here:
    #0 pthread_mutex_lock <null> (named+0x4642a6)
    #1 zone_refreshkeys /builds/isc-projects/bind9/lib/dns/zone.c:9951:2 (libdns.so.1110+0x204dc3)
    #2 zone_maintenance /builds/isc-projects/bind9/lib/dns/zone.c:10274:5 (libdns.so.1110+0x203a78)
    #3 zone_timer /builds/isc-projects/bind9/lib/dns/zone.c:13106:2 (libdns.so.1110+0x1e815a)
    #4 dispatch /builds/isc-projects/bind9/lib/isc/task.c:1157:7 (libisc.so.1107+0x507d5)
    #5 run /builds/isc-projects/bind9/lib/isc/task.c:1331:2 (libisc.so.1107+0x4d729)

  Thread T2 'isc-worker0001' (tid=9163, running) created by main thread at:
    #0 pthread_create <null> (named+0x446edb)
    #1 isc_thread_create /builds/isc-projects/bind9/lib/isc/pthreads/thread.c:60:8 (libisc.so.1107+0x726d8)
    #2 isc__taskmgr_create /builds/isc-projects/bind9/lib/isc/task.c:1468:7 (libisc.so.1107+0x4d635)
    #3 isc_taskmgr_create /builds/isc-projects/bind9/lib/isc/task.c:2109:11 (libisc.so.1107+0x4f587)
    #4 create_managers /builds/isc-projects/bind9/bin/named/./main.c:886:11 (named+0x4f1a97)
    #5 setup /builds/isc-projects/bind9/bin/named/./main.c:1305:11 (named+0x4f05ee)
    #6 main /builds/isc-projects/bind9/bin/named/./main.c:1556:2 (named+0x4ef12d)

  Thread T7 'isc-worker0006' (tid=9168, running) created by main thread at:
    #0 pthread_create <null> (named+0x446edb)
    #1 isc_thread_create /builds/isc-projects/bind9/lib/isc/pthreads/thread.c:60:8 (libisc.so.1107+0x726d8)
    #2 isc__taskmgr_create /builds/isc-projects/bind9/lib/isc/task.c:1468:7 (libisc.so.1107+0x4d635)
    #3 isc_taskmgr_create /builds/isc-projects/bind9/lib/isc/task.c:2109:11 (libisc.so.1107+0x4f587)
    #4 create_managers /builds/isc-projects/bind9/bin/named/./main.c:886:11 (named+0x4f1a97)
    #5 setup /builds/isc-projects/bind9/bin/named/./main.c:1305:11 (named+0x4f05ee)
    #6 main /builds/isc-projects/bind9/bin/named/./main.c:1556:2 (named+0x4ef12d)

SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) (/builds/isc-projects/bind9/bin/named/.libs/named+0x4642a6) in pthread_mutex_lock
(cherry picked from commit cdcfde9e65)
 2020-09-09 16:22:39 +10:00
Mark Andrews
5b425046dd isc_mutex_init_errcheck prototype should not be under ISC_MUTEX_PROFILE 
(cherry picked from commit 552e0b852e)
 2020-09-09 16:22:38 +10:00
Mark Andrews
4881207780 Defer read of zl->server and zl->reconfig until 
the reference counter has gone to zero and there is
no longer a possibility of changes in other threads.

(cherry picked from commit 9b445f33e2)
 2020-09-09 16:22:38 +10:00
Mark Andrews
255f7b0b12 Merge branch '2120-the-dynamic-load-flags-are-inconsistent-with-thread-analysis-v9_16' into 'v9_16' 
Resolve "The dynamic load flags are inconsistent with thread analysis"

See merge request isc-projects/bind9!4096
 2020-09-07 22:58:10 +00:00
Mark Andrews
5bc67c0ac9 Don't run dyndb and dlzexternal if running TSAN as 
the dlopen flags being used are incompatible with TSAN.

(cherry picked from commit 86316ed29d)
 2020-09-08 08:34:34 +10:00
Mark Andrews
248d002816 alphabetize tests/usage 
(cherry picked from commit bbece7389e)
 2020-09-08 08:26:13 +10:00
Evan Hunt
17f0cab259 Merge branch 'each-faster-tcp-test-v9_16' into 'v9_16' 
shorten the tcp system test

See merge request isc-projects/bind9!4092
 2020-09-04 21:36:01 +00:00
Evan Hunt
267c154a63 shorten the tcp system test 
the tcp system test uses the 'packet.pl' test tool to send a packet
thousands of times. this took a long time because the tool was waiting
for replies and parsing them; however, for that particular test the
replies aren't relevant.

this commit uses non-blocking sockets and moves the reply parsing
outside the send loop, which speeds the system test up substantially.

(cherry picked from commit 1ceea908b6)
 2020-09-04 14:22:53 -07:00